CN112987017A

CN112987017A - Ultrasound imaging system and power-down control method thereof

Info

Publication number: CN112987017A
Application number: CN201911217000.6A
Authority: CN
Inventors: 张皖; 朱思君; 胡锐
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2021-06-18
Anticipated expiration: 2039-11-29
Also published as: CN112987017B

Abstract

The application discloses an ultrasonic imaging system and a power failure control method thereof, wherein the system comprises an ultrasonic imaging device and a power supply device for supplying power to the ultrasonic imaging device; the power supply device includes: the line side interface is provided with a first magnetic piece, and the power supply module is provided with a first magnetic piece; an ultrasound imaging apparatus includes: a load; the host machine interface is provided with a second magnetic part, and the second magnetic part is used for magnetic adsorption of the first magnetic part; the second control switch is connected with the host interface and the load and used for connecting or disconnecting the host interface and the load; and the equipment control circuit is respectively connected with the second control switch and the host interface and is used for controlling the second control switch to be disconnected when the magnetic adsorption of the first magnetic piece and the second magnetic piece is removed so as to disconnect the host interface and the load. Connect power supply unit and ultrasonic imaging equipment through magnetic adsorption's mode, still through when power supply unit's magnetism is inhaled formula interface and is pulled out from ultrasonic imaging equipment's magnetism, the connection of disconnection host computer interface and load to protection interface and load.

Description

Ultrasonic imaging system and power-down control method thereof

Technical Field

The application relates to the technical field of power supply of ultrasonic imaging equipment, in particular to an ultrasonic imaging system and a power failure control method thereof.

Background

Ultrasound imaging devices, such as portable ultrasound imaging devices, are typically powered using an adapter, the power cord of which is connected to the ultrasound imaging device by a plug-in connector. The insertion force of the plug-in connector is large, so that the insertion and the extraction between the adapter and the ultrasonic imaging equipment are inconvenient.

Disclosure of Invention

In a first aspect, the present application provides an ultrasound imaging system comprising an ultrasound imaging apparatus and a power supply device for supplying power to the ultrasound imaging apparatus; the power supply device includes: the line side interface is provided with a first magnetic piece, and the power supply module is used for supplying electric energy to the line side interface;

the ultrasonic imaging apparatus includes:

a load;

the host interface is provided with a second magnetic part, and the second magnetic part is used for being magnetically adsorbed with the first magnetic part of the line side interface so that the line side interface is connected with the host interface;

a second control switch connected to the host interface and the load, for controllably switching between on and off states to connect or disconnect the host interface and the load;

and the equipment control circuit is respectively connected with the second control switch and the host interface and is used for controlling the second control switch to be disconnected when the magnetic adsorption of the first magnetic piece and the second magnetic piece is removed so as to disconnect the host interface and the load.

In a second aspect, the present application provides a power down control method for the aforementioned ultrasound imaging system, where the method includes:

when the magnetic attraction between the first magnetic piece and the second magnetic piece is released, the equipment control circuit controls the second control switch to enter an off state so as to disconnect the load from the host interface.

The embodiment of the application provides an ultrasonic imaging system and a power failure control method thereof, wherein a power supply device and ultrasonic imaging equipment are connected in a magnetic adsorption mode, and users do not need to plug and unplug forcibly; still when drawing out from ultrasonic imaging equipment's magnetism formula interface through the formula interface of inhaling at power supply unit's magnetism, the connection of disconnection host computer interface and load prevents that electric energy transmission to the host computer interface of storage such as electric capacity, inductance in the load from causing host computer interface and power supply unit's line side interface to appear the problem that the interface struck sparks when the separation, can also prevent for example when electrified equipment such as power supply unit discharges to the host computer interface is unusual, the energy conduction of discharging causes the harm to the load.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure as claimed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic block diagram of an ultrasound imaging system in accordance with an embodiment of the present application;

FIG. 2 is a schematic diagram of one configuration of the load of FIG. 1;

FIG. 3 is a schematic diagram of one configuration of the feature circuit of FIG. 1;

FIG. 4 is a schematic diagram of a structure of the in-place detection circuit of FIG. 1;

FIG. 5 is a schematic diagram of a structure of an embodiment of an ultrasound imaging system;

FIG. 6 is a schematic structural diagram of another embodiment of an ultrasound imaging system;

FIG. 7 is a schematic structural diagram of yet another embodiment of an ultrasound imaging system;

FIG. 8 is a schematic structural diagram of yet another embodiment of an ultrasound imaging system;

FIG. 9 is a schematic structural diagram of yet another embodiment of an ultrasound imaging system;

FIG. 10 is a schematic diagram of the structure of one embodiment of a power supply for an ultrasound imaging system;

FIG. 11 is a schematic diagram of the structure of an embodiment of an ultrasound imaging apparatus;

fig. 12 is a schematic flow chart of a power supply method of an ultrasound imaging system according to an embodiment of the present application.

Description of reference numerals:

100. an ultrasound imaging device; 110. a load; 111. an ultrasonic probe; 112. a main board; 101. a processor; 113. a display; 120. a host interface; 121. a second magnetic member; 122. a third magnetic member; 130. a feature circuit; 131. an impedance circuit; 132. a first delay circuit; 133. a first memory; 140. a second control switch; 150. a device control circuit; 151. a power-up/power-down detection circuit; 152. a second power-on control circuit; 153. a second temperature sensor; 1531. a second temperature sensor; 154. a second on/off control circuit; 160. a voltage detection circuit; 170. a rechargeable battery;

200. a power supply device; 210. a line side interface; 211. a first magnetic member; 212. a detection terminal; 213. a communication terminal; 214. a Hall element; 220. a power supply module; 230. a first control switch; 240. a line side control circuit; 241. an on-site detection circuit; 242. a first power-on control circuit; 243. a short circuit detection circuit; 244. a first temperature sensor; 2441. a first temperature sensor; 245. a first on-off control circuit; 250. a second delay circuit; 260. a first sampling circuit;

10. a host Hall element; 11. an output terminal; 20. a fourth magnetic member; 30. an input terminal.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The flow diagrams depicted in the figures are merely illustrative and do not necessarily include all of the elements and operations/steps, nor do they necessarily have to be performed in the order depicted. For example, some operations/steps may be decomposed, combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an ultrasound imaging system according to an embodiment of the present application. The ultrasound imaging system includes an ultrasound imaging apparatus 100 and a power supply device 200. The power supply device 200 may supply power to the ultrasound imaging apparatus 100.

As shown in fig. 1, the ultrasound imaging apparatus 100 includes a load 110 and a host interface 120 provided with a second magnetic member 121, the power supply device 200 supplies power to the ultrasound imaging apparatus 100 by communicating with the host interface 120, and specifically, the second magnetic member 121 is used for being magnetically attracted to a line side interface 210 of the power supply device 200 of the ultrasound imaging apparatus 100 so as to connect the host interface 120 with the power supply device 200.

Illustratively, the load 110 is used for performing ultrasound imaging. As shown in fig. 2, the load 110 may include a part of the ultrasonic probe 111, the main board 112, the display 113, and the like of the ultrasonic imaging apparatus 100 that consumes power, the main board 112 acquires an ultrasonic echo signal from the ultrasonic probe 111, and performs ultrasonic imaging on the ultrasonic echo signal to acquire an ultrasonic image of a measured object; the ultrasound images are then transmitted to the display 113 for display.

As will be understood, the ultrasonic imaging apparatus 100 is configured to transmit ultrasonic waves to a test object through the ultrasonic probe 111, receive ultrasonic echoes returned from the test object, and ultrasonically image ultrasonic echo signals to acquire an ultrasonic image of the test object; the ultrasound image is then displayed on the display 113.

The power supply 200 is used to supply power to the ultrasound imaging apparatus 100. Specifically, as shown in fig. 1, the power supply device 200 includes a line-side interface 210, a power module 220, and a first control switch 230, where the power module 220 is configured to provide power to the line-side interface 210.

Illustratively, the power supply apparatus 200 further includes a line side control circuit 240 for controlling whether the power module 220 supplies power to the line side interface 210.

The line side interface 210 has a first magnetic member 211, and the first magnetic member 211 is magnetically attracted to the host interface 120 to connect the line side interface 210 to the host interface 120. Specifically, the first magnetic member 211 and the second magnetic member 121 of the host interface 120 are magnetically attracted to each other, so as to connect the line-side interface 210 and the host interface 120. The second magnetic member 121 and the first magnetic member 211 are, for example, ferrite magnet, alnico magnet, ndfeb magnet, etc., which is not limited in the present invention.

The power module 220 is used to provide power to the line side interface 210. For example, power module 220 includes a power adapter for converting mains power to power that matches ultrasound imaging device 100. Illustratively, the power module 220 further includes a power cord having one end connected to the line-side interface 210 and the other end connected to the power adapter. For example, the power cord and the power adapter may be fixedly connected or removably connected.

The ultrasonic imaging system shown in fig. 1 connects the power supply device 200 and the ultrasonic imaging apparatus 100 in a magnetic adsorption manner, and does not require the user to forcibly insert and pull, and the line side interface 210 and the host interface 120 can be connected in a shorter time, so that the working strength of the user is reduced, and the user can use the system conveniently. During magnetic connection, because the magnetic port has a large contact resistance at the moment of contact, and hot plugging may cause a situation that local temperature rise is too high and equipment may be damaged by ignition, the ultrasonic imaging system of fig. 1 further provides a first control switch 230 and a line side control circuit 240 on the power supply device 200, so that when it is detected that the line side interface 210 is connected with the host interface 120, the line side interface 210 and the power module 220 are connected, and the power supply device 200 can supply power to the outside.

The first control switch 230 and the line side control circuit 240 may be provided at a position near the power adapter, in the power adapter, or on the power line, or may also be provided at a position near the line side interface 210. It can be understood that the first control switch 230 and the line side control circuit 240 are disposed near the line side interface 210, which facilitates the circuit layout and improves the reliability.

Specifically, as shown in fig. 1, the first control switch 230 is connected to the power module 220 and the line-side interface 210, and may be specifically connected between the power module 220 and the line-side interface 210. The first control switch 230 is used to controllably switch between on and off states in order to connect or disconnect the power supply module 220 and the line side interface 210. For example, the first control switch 230 includes a metal-oxide semiconductor field effect transistor (MOSFET), to which the present invention is not limited.

The line side control circuit 240 is respectively in signal connection with the line side interface 210 and the first control switch 230, and is used for detecting whether the line side interface 210 is connected with the host interface 120 of the ultrasonic imaging device 100; if the line side control circuit 240 detects that the line side interface 210 is connected to the host interface 120, a first control signal is sent to the first control switch 230, so that the first control switch 230 is turned on to connect the line side interface 210 and the power module 220, and power is supplied to the host interface 120.

When the line side interface 210 is not connected to the host interface 120, the power module 220 is not connected to the line side interface 210, and the line side interface 210 does not supply power, so that abnormal discharge and ignition cannot be generated when the line side interface 210 approaches the host interface 120.

After detecting that the line side interface 210 is connected to the host interface 120, the first control switch 230 is turned on, and the power module 220 supplies power to the line side interface 210, so that the host interface 120 can obtain power. In this process, after the power supply device 200 is successfully connected with the magnetic part of the ultrasonic imaging apparatus 100, the power supply device 200 supplies power to the ultrasonic imaging apparatus 100, abnormal discharge and ignition cannot occur in the process, a large temperature rise caused by a large impedance in the moment of contact of the interface in a magnetic adsorption connection mode can be avoided, the safety of a rear-stage load can be protected, and the service life of the rear-stage load can be prolonged.

Illustratively, the line side control circuit 240 is configured to detect a device signal output by the line side interface 210, and determine whether the line side interface 210 is connected to the host interface 120 of the ultrasound imaging apparatus 100 according to the device signal output by the line side interface 210. For example, the line side control circuit 240 is configured to send a first control signal to the first control switch 230 to turn on the first control switch 230 to connect the line side interface 210 and the power supply module 220 to supply power to the host interface 120 when the device signal is detected as a characteristic signal characterizing the ultrasound imaging device 100. The detection of the characteristic signal helps the line side control circuit 240 to accurately detect the ultrasonic imaging device 100, and power is not supplied to other non-ultrasonic imaging devices, or power is supplied to the outside when the line side control circuit is accidentally connected with other magnetic members, so that the power supply safety is further improved.

For example, after the line side interface 210 and the host interface 120 are connected, the power supply device 200 may transmit a signal to the host interface 120 through the line side interface 210, the host interface 120 may output a feedback electrical signal to the line side interface 210 through the host interface 120 after receiving the signal transmitted by the line side interface 210, and the line side interface 210 further outputs the feedback electrical signal received from the host interface 120 to the line side control circuit 240. The feedback electrical signal is an apparatus signal output from the line side interface to the line side control circuit 240, and when the line side interface 210 and the host interface 120 are connected, the feedback electrical signal is a characteristic signal representing the ultrasonic imaging apparatus 100.

In some embodiments, as shown in fig. 1, the ultrasound imaging device 100 includes a characterization circuit 130 for providing a characterization signal. The feature circuit 130 may be disposed on the motherboard 112 of the ultrasound imaging device 100, or on a circuit board proximate to the host interface 120, for example. The feature circuit 130 may output a feedback electrical signal to the host interface 120 in response to a signal passed by the line side interface 210.

Illustratively, as shown in FIG. 1, line side interface 210 includes a sense terminal 212. The detection terminal 212 is used for connecting with the feature circuit 130 of the ultrasonic imaging apparatus 100 when the line side interface 210 is connected with the host interface 120, and is used for transmitting a signal to the feature circuit 130 and outputting a feedback electrical signal transmitted from the host interface 120 to the line side control circuit 240. The line side control circuit 240 includes a presence detection circuit 241 connected to the detection terminal 212. The bit detection circuit 241 is configured to detect whether the signal received by the detection terminal 212 matches a characteristic signal characterizing the ultrasound imaging apparatus 100, and determine that the line side interface 210 is connected to the host interface 120 when the characteristic signal is detected.

When line side interface 210 and host interface 120 are connected, for example, sense terminal 212 may pass a current signal to host interface 120, and in response to which feature circuit 130 may pass a feedback electrical signal in the form of a voltage, i.e., a feedback voltage signal, through host interface 120 to sense terminal 212. The test terminal 212 may, for example, communicate a communication request signal to the host interface 120, and the feature circuit 130 may, in response to the request signal, communicate an internally stored communication reply signal to the test terminal 212 via the host interface 120. In some examples, a signal may also be actively output by feature circuit 130 to detection terminal 212, and line side control circuit 240 may determine that line side interface 210 is connected to host interface 120 based on the actively output signal. Some exemplary embodiments will be specifically described below.

Illustratively, the presence detection circuit 241 is configured to determine whether the detection terminal 212 is connected to the ultrasound imaging apparatus 100 according to the impedance of the connection of the detection terminal 212.

For example, as shown in fig. 3, the characterization circuit 130 includes an impedance circuit 131 having a preset impedance value. The presence detection circuit 241 detects the impedance connected to the detection terminal 212, and determines whether or not the detection terminal 212 is connected to the characterization circuit 130 based on the impedance connected to the detection terminal 212.

For example, the impedance circuit 131 includes a resistor with a predetermined resistance value, and when the presence detection circuit 241 detects that the impedance connected to the detection terminal 212 is within a resistance range determined by the resistance value of the resistor, it can be determined that the detection terminal 212 is connected to the feature circuit 130, so as to determine that the line side interface 210 is connected to the host interface 120.

For example, the impedance circuit 131 includes a resistor having a predetermined resistance value. If the line side interface 210 is connected to the host interface 120, the line side interface 210 may provide a current or voltage signal to the impedance circuit 131, and accordingly the impedance circuit 131 outputs the feedback voltage signal to the line side interface 210 through the host interface 120. Since the magnitude of the current signal provided by the line-side interface 210 is within a predetermined range and the resistance of the impedance circuit 131 is constant, the feedback voltage signal provided by the impedance circuit 131 is a voltage signal within a predetermined voltage range, and the feedback voltage signal within the predetermined voltage range is a device signal detected as a characteristic signal by the line-side control circuit 240. If the line-side interface 210 is connected to another device with a magnetic element, as long as the other device cannot provide a feedback voltage signal falling within the preset voltage range, the line-side control circuit 240 determines that the power supply device 200 is not connected to the ultrasonic imaging device 100 based on the result that the characteristic signal is not detected, and does not switch on the power supply module 220 and the line-side interface 210 to supply power to the outside.

For example, as shown in fig. 3, the impedance circuit 131 may further include a first delay circuit 132, configured to stabilize the impedance connected to the detection terminal 212 at a preset resistance value after a first preset time period after the host interface 120 is connected to the line side interface 210. As mentioned above, the resistance value of the impedance circuit 131 is substantially fixed, and the description herein that the impedance connected to the detection terminal 212 is stabilized after the first preset time period does not indicate that the resistance value of the impedance circuit 131 itself changes, but the feedback electrical signal output by the impedance circuit 131 to the detection terminal 212 is stabilized after the first preset time period, for example, within the preset voltage range, due to the action of the first delay circuit 132. Therefore, the first delay circuit 132 can detect the characteristic signal of the ultrasonic imaging apparatus 100 only after the bit detection circuit 241 has a first preset time period. That is, the impedance connected to the detection terminal 212 is detected as the impedance of the predetermined resistance value after the bit detection circuit 241 has passed the first predetermined time period.

For example, the first delay circuit 132 includes a capacitor and/or an inductor. When the line-side interface 210 and the host interface 120 are connected to connect the detection terminal 212 to the impedance circuit 131, the detection terminal 212 applies a voltage or a current to the impedance circuit 131, and since the voltage of the capacitor and the current of the inductor in the first delay circuit 132 cannot change suddenly, the resistor in the impedance circuit 131 can output a voltage and a current that are stable after a period of time, and the in-situ detection circuit 241 can detect the stable impedance value of the impedance circuit 131.

Illustratively, if the line side interface 210 and the host interface 120 are not stably connected, for example, foreign objects exist on the line side interface 210 and/or the host interface 120 or foreign objects exist between the line side interface 210 and the host interface 120, the presence detection circuit 241 cannot detect the stable impedance value of the impedance circuit 131, so that the case where the line side interface 210 and the host interface 120 are not stably connected can be detected. In this case, the line-side control circuit 240 does not control the first control switch 230 to be turned on, so that the power module 220 does not supply power to the line-side interface 210, and abnormal discharge and ignition and a large temperature rise due to connection impedance during unstable connection between the line-side interface 210 and the host interface 120 are not generated.

For example, as shown in fig. 4, the bit detection circuit 241 may include a first comparator OA1 and a second comparator OA 2; wherein a first input terminal + IN of the first comparator OA1 is connected to a first reference voltage Vref1, a second input terminal-IN of the second comparator OA2 is connected to a second reference voltage Vref2 lower than the first reference voltage Vref1, a second input terminal-IN of the first comparator OA1 and a first input terminal + IN of the second comparator OA2 are connected to the detection terminal 212, and an output terminal OUT1 of the first comparator OA1 and an output terminal OUT2 of the second comparator OA2 are connected to the first control switch 230.

When the device signal output from the detection terminal 212 is greater than the second reference voltage Vref2 and less than the first reference voltage Vref1, the first comparator OA1 or the second comparator OA2 outputs the first control signal to the first control switch 230, so that the first control switch 230 is turned on.

The presence detect circuit 241 of fig. 4, through the control of the first reference voltage Vref1 and the second reference voltage Vref2, only allows the first control switch 230 to be turned on when a device signal between two reference voltage ranges is detected. On the other hand, the presence detection circuit 241 in fig. 4 can also function as a short circuit detection circuit, functioning as a short circuit protection. If a short circuit occurs between the line side interface 210 and the host interface 120, the voltage signal output from the detection terminal 212 to the on-site detection circuit 241 is reduced to be lower than the second reference voltage Vref2, and the line side control circuit 240 can control the first control switch 230 to be turned off, thereby avoiding the equipment damage caused by the short circuit.

In an embodiment not shown, the bit detection circuit 241 may employ only one comparator, and output the first control signal according to a comparison result between the device signal output from the detection terminal 212 and a built-in reference voltage.

Illustratively, as another example shown in fig. 5, the characteristic circuit 130 may include a first memory 133 storing a characteristic signal, and the line-side interface 210 further includes a communication terminal 213. The communication terminal 213 is used for signal connection with the feature circuit 130 through another communication terminal correspondingly arranged on the host interface 120 when the line side interface 210 is connected with the host interface 120; the bit detection circuit 241 reads the characteristic signal in the first memory 133 through the communication terminal 213.

The first memory 133 may be, for example, a memory on the motherboard 112 of the ultrasound imaging device 100 or a memory on a circuit board near the host interface 120.

For example, as shown in fig. 5, the line side interface 210 may include a hall element 214, the host interface 120 is provided with a third magnetic member 122, and when the line side interface 210 is connected to the host interface 120, the hall element 214 corresponds to the third magnetic member 122. The line side control circuit 240 is configured to detect an output of the hall element 214, and determine whether the line side interface 210 is connected to the host interface 120 according to the output of the hall element 214.

Specifically, the third magnetic member 122 may be a magnetic member independent from the second magnetic member 121, or may be the second magnetic member 121 itself.

Specifically, the on-position detection circuit 241 of the line-side control circuit 240 receives the output of the hall element 214, and determines that the line-side interface 210 is connected to the host interface 120 if the magnetic field of the hall element 214 is strong enough.

In some other embodiments, as shown in fig. 6, the host interface 120 includes a host hall element 10, and the line side interface 210 is provided with a fourth magnetic member 20 as the hall element disposed at the host interface 120, and when the line side interface 210 is connected to the host interface 120, the host hall element 10 corresponds to the fourth magnetic member 20. The line side control circuit 240 is configured to detect the output of the main hall element 10 through the input terminal 30, and determine whether the line side interface 210 is connected to the main unit interface 120 according to the output of the main hall element 10.

The fourth magnetic member 20 may be a magnetic member independent from the first magnetic member 211, or may be the first magnetic member 211 itself.

For example, the output terminal 11 of the main hall element 10 is provided on the main unit interface 120, the input terminal 30 of the signal of the main hall element 10 is provided on the line side interface 210, and the line side control circuit 240 is connected to the input terminal 30. The signal output from the main hall element 10 on the main unit interface 120 is transmitted to the line side control circuit 240 through the output terminal 11 and the input terminal 30, and the line side control circuit 240 can determine whether the line side interface 210 is connected to the main unit interface 120 based on the signal of the input terminal 30.

In some embodiments, as shown in fig. 5, the line side control circuit 240 may further include a first power-up control circuit 242 connected to the first control switch 230. The first power-on control circuit 242 is configured to gradually increase the voltage and/or current output by the control line-side interface 210 to the host interface 120 to the load rated voltage and/or load rated current when the first control switch 230 is turned on. For example, the first power-up control circuit 242 may control the voltage and/or current output by the line-side interface 210 to the host interface 120 to gradually increase from zero to the load rated voltage and/or load rated current.

Illustratively, the first power-up control circuit 242 is coupled between the bit detection circuit 241 and the first control switch 230.

For example, when the bit detection circuit 241 detects a characteristic signal of the ultrasonic imaging apparatus 100 or the line side control circuit 240 determines that the line side interface 210 is connected to the host interface 120 according to the output of the hall element 214, the first power-on control circuit 242 controls the operating state of the first control switch 230 to gradually transition to the saturation region through the linear region. When the first control switch 230 operates in the linear region, the voltage and/or current output from the line-side interface 210 to the host interface 120 gradually increases; when the first control switch 230 is operated in the saturation region, the voltage and/or current output by the line-side interface 210 to the host interface 120 reaches the load rated voltage and/or load rated current.

It can be understood that the voltage and/or current outputted from the line-side interface 210 to the host interface 120 gradually increases to the load rated voltage and/or load rated current, so as to further prevent the abnormal spark discharge generated when the line-side interface 210 and the host interface 120 are connected. And the impact of the host interface 120 suddenly accessing a larger voltage and/or current to the ultrasound imaging apparatus 100 can be avoided.

In some embodiments, as shown in fig. 7, the power supply apparatus 200 may further include a second delay circuit 250 connected to the first control switch 230, for connecting the line-side interface 210 and the power supply module 220 to supply power to the host interface 120 after a preset time period elapses when the line-side control circuit 240 detects that the line-side interface 210 is connected to the host interface 120, for example, when the line-side control circuit 240 detects that the device signal is a characteristic signal characterizing the ultrasound imaging device 100.

The second delay circuit 250 can control the first control switch 230 to be turned on when the line-side interface 210 and the host interface 120 are stably connected, so that the power module 220 supplies power to the line-side interface 210, and a large temperature rise and abnormal discharge caused by connection impedance when the line-side interface 210 and the host interface 120 are not stably connected are prevented.

Illustratively, the power supply apparatus 200 includes the first power-on control circuit 242, or includes the second delay circuit 250, or includes both the first power-on control circuit 242 and the second delay circuit 250.

In some embodiments, when the magnetic attraction between the first magnetic member 211 and the second magnetic member 121 is released, the line side control circuit 240 may be configured to determine whether a line side power-down condition is satisfied, and control the first control switch 230 to be turned off when it is determined that the line side power-down condition is satisfied, so as to disconnect the power module 220 and the line side interface 210. The line side control circuit 240 may determine that a line side power-down condition is satisfied when it detects that the power supply device is not connected to the ultrasonic imaging apparatus.

Thereby can realize when pulling out power supply unit 200's magnetism formula interface of inhaling from ultrasonic imaging device 100's magnetism formula interface, power module 220 and line side interface 210 disconnection of power supply unit 200 stop for line side interface 210 supplies power, can avoid magnetism to inhale the problem that the interface struck sparks when the formula interface separates.

For example, if the line-side control circuit 240 detects that the line-side interface 210 is not connected to the host interface 120, a third control signal is sent to the first control switch 230, so that the first control switch 230 is turned off to disconnect the line-side interface 210 and the power module 220.

Illustratively, the on-bit detection circuit 241 of the line-side control circuit 240 detects the device signal output by the detection terminal 212 of the line-side interface 210, and detects whether the signal received from the detection terminal 212 belongs to the characteristic signal characterizing the ultrasound imaging device 100.

Specifically, when the magnetic attraction between the first magnetic element 211 and the second magnetic element 121 is released, if the presence detection circuit 241 does not detect the characteristic signal, it is determined that the magnetic attraction between the first magnetic element 211 and the second magnetic element 121 is released, and the line-side interface 210 is not connected to the host interface 120; so that the line side control circuit 240 can send a third control signal to the first control switch 230 to open the first control switch 230 to disconnect the line side interface 210 and the power supply module 220.

Specifically, if the in-place detection circuit 241 detects that the device signal is a characteristic signal that does not characterize the ultrasound imaging device 100, a third control signal is sent to the first control switch 230, so that the first control switch 230 is turned off to disconnect the line-side interface 210 and the power module 220. The detection of the characteristic signal helps the line side control circuit 240 to accurately detect the ultrasonic imaging device 100, and power is not supplied to other non-ultrasonic imaging devices, or power is supplied to the outside when the line side control circuit is accidentally connected with other magnetic members, so that the power supply safety is further improved.

In some embodiments, as shown in fig. 7, the power supply apparatus 200 may further include a first sampling circuit 260 connected between the line-side interface 210 and the power supply module 220, wherein the first sampling circuit 260 is configured to sample the current transmitted by the power supply module 220 to the line-side interface 210. For example, the first sampling circuit 260 includes a sampling resistor disposed between the power module 220 and the first control switch 230.

The line side control circuit 240 detects the sampling current transmitted from the power module 220 to the line side interface 210 through the first sampling circuit 260, and disconnects the line side interface 210 and the power module 220 when the sampling current acquired to the line side interface 210 is not less than the first overcurrent threshold.

Illustratively, as shown in fig. 7, the line side control circuit 240 further includes a short detection circuit 243, and the short detection circuit 243 connects the first sampling circuit 260 and the first power-up control circuit 242. The short-circuit detection circuit 243 determines whether the sampling current of the first sampling circuit 260 is not less than the first overcurrent threshold, and when the sampling current is not less than the first overcurrent threshold, the short-circuit detection circuit 243 sends a signal to the first power-on control circuit 242, and the first power-on control circuit 242 controls the first control switch 230 to be turned off according to the signal.

The short-circuit detection circuit 243 can implement overcurrent protection, for example, when a foreign object exists on the line-side interface 210 and causes a terminal short circuit, if it is sampled that the current transmitted to the line-side interface 210 by the power module 220 exceeds a first overcurrent threshold, the first control switch 230 can be controlled to be turned off to stop transmitting electric energy to the line-side interface 210, thereby avoiding damage to the power supply apparatus 200 due to overcurrent.

In some embodiments, as shown in fig. 8, the line side control circuit 240 includes a first temperature sensor 244 sensitive to temperature, the first temperature sensor 244 disposed at the line side interface 210 for detecting the temperature at the line side interface 210.

Illustratively, the line-side control circuit 240 is configured to disconnect the line-side interface 210 from the power module 220 when the temperature of the line-side interface 210 is not less than the first temperature threshold. The temperature protection of the interface is realized, and continuous heating when the interface temperature is too high is avoided.

In some embodiments, the first temperature sensor 244 may include a first self-healing temperature fuse disposed at the line-side interface 210, the first self-healing temperature fuse being connected between the line-side interface 210 and the power module 220, for example, between the first control switch 230 and the line-side interface 210. When the temperature value of the line side interface 210 exceeds the temperature threshold value, the first self-recovery temperature fuse is automatically fused, so that the line side interface 210 and the power supply module 220 are disconnected, and the power supply module 220 is stopped from continuously supplying power to the line side interface 210; when the temperature of the line-side interface 210 returns to a lower temperature, the first self-resuming temperature fuse resumes connection, and the power module 220 may supply power to the line-side interface 210. It will be appreciated that the temperature control in this embodiment may not require the first control switch 230, but rather disconnects the line side interface 210 and the power module 220 through the first self-healing temperature fuse.

For example, as shown in fig. 9, the line side control circuit 240 may further include a first on-off control circuit 245, and the first on-off control circuit 245 is connected to the line side interface 210 and the first control switch 230. Specifically, the first on-off control circuit 245 is further connected to the first temperature sensor 244, detects the state of the first temperature sensor 244, and disconnects the line-side interface 210 and the power module 220 according to the state of the first temperature sensor 244. In this example, the first on-off control circuit 245 disconnects the line-side interface 210 and the power module 220 by opening the first control switch 230.

Illustratively, the first temperature sensor 244 may be in different states at different temperatures, such as a resettable temperature fuse that is open at higher temperatures and open at lower temperatures. The first on/off control circuit 245 may determine whether the line-side interface 210 and the power module 220 need to be disconnected by detecting the state of the first temperature sensor 244.

For example, as shown in fig. 9, the first temperature sensor 244 may include a first temperature sensor 2441 disposed at the line-side interface 210; the first on-off control circuit 245 reads the temperature of the line-side interface 210 from the first temperature sensor 2441, and disconnects the connection between the line-side interface 210 and the power module 220 when the temperature of the line-side interface 210 is not less than the first temperature threshold.

Illustratively, the first on-off control circuit 245 includes a control chip; the control chip is connected to the first temperature sensor 2441 and the first control switch 230; when the control chip controls the first control switch 230 to turn off, the line side interface 210 and the power module 220 are disconnected.

It is understood that, as shown in fig. 9, the on-bit detection circuit 241 of the line side control circuit 240 may be connected to the first on-off control circuit 245 for detecting whether the line side interface 210 is connected to the host interface 120. When the on-line detection circuit 241 detects that the line-side interface 210 is connected to the host interface 120, the first on-off control circuit 245 connects the line-side interface 210 and the power module 220 to supply power to the host interface 120. After the power supply device 200 is successfully connected with the magnetic part of the ultrasonic imaging device 100, the power supply device 200 supplies power to the ultrasonic imaging device 100, abnormal discharge and ignition cannot occur in the process, large temperature rise caused by large impedance in the moment of contact of an interface in a magnetic adsorption connection mode can be avoided, safety of a rear-stage load can be protected, and the service life of the rear-stage load can be prolonged.

It will be appreciated that the first on-off control circuit 245 may also include the first power-on control circuit 242. The first power-on control circuit 242 is configured to control the voltage and/or current output by the line-side interface 210 to gradually increase to the load rated voltage and/or load rated current when the first on-off control circuit 245 connects the line-side interface 210 and the power module 220. It is possible to further prevent abnormal spark discharge from being generated when the line side interface 210 and the host interface 120 are connected. And the impact of the host interface 120 suddenly accessing a larger voltage and/or current to the ultrasound imaging apparatus 100 can be avoided.

For example, the first on/off control circuit 245 may be disposed in a power adapter of the power module 220 or disposed on a power line of the power module 220.

For example, as shown in fig. 10, the first temperature sensor 244 may include a first temperature sensor 2441 disposed at the line-side interface 210, the first temperature sensor 2441 being configured to output a line-side temperature value varying according to a temperature of the line-side interface 210. The line side control circuit 240 is further configured to disconnect the line side interface 210 and the power module 220 when the line side temperature value is not less than the first temperature threshold value.

Illustratively, the first temperature sensor 2441 is connected to the first power-up control circuit 242 of the line-side control circuit 240. The first power-on control circuit 242 may control the first control switch 230 to turn off when the temperature value of the line-side interface 210 exceeds the first temperature threshold according to the line-side temperature value acquired from the first temperature sensor 2441, so as to stop the power supply from the power module 220 to the line-side interface 210, and prevent the temperatures at the line-side interface 210 and the host interface 120 from increasing.

In some embodiments, line side control circuitry 240 is further to implement: if the characteristic signal is not detected, the first control switch 230 is controlled to be turned off to disconnect the line-side interface 210 and the power module 220. Therefore, when the line side interface 210 and the host interface 120 are not connected, the power module 220 does not supply power to the line side interface 210, and the line side interface 210 is not powered, so as to prevent short-circuit discharge caused by a foreign object contacting the line side interface 210.

In some embodiments, as shown in fig. 7, the ultrasound imaging device 100 further comprises a device control circuit 150, the device control circuit 150 being configured to control the connection of the host interface 120 to the load 110.

Illustratively, the ultrasound imaging apparatus 100 further comprises a second control switch 140, the second control switch 140 being connected to the host interface 120 and the load 110 for controllably switching between an on state and an off state to connect or disconnect the host interface 120 and the load 110.

The device control circuit 150 is respectively connected to the second control switch 140 and the host interface 120, and configured to send a second control signal to the second control switch 140 when detecting that the voltage and/or the current output by the host interface 120 is not less than a preset connection threshold, so as to connect the host interface 120 and the load 110, so that the host interface 120 supplies power to the load 110.

Illustratively, when the line side control circuit 240 of the power supply device 200 detects that the device signal output by the line side interface 210 is a characteristic signal characterizing the ultrasound imaging device 100, the line side interface 210 and the power supply module 220 are connected to supply power to the host interface 120. The device control circuitry 150 may detect the voltage and/or current output by the host interface 120.

If the voltage and/or current output by the host interface 120 reaches a preset pass-through threshold, for example, the pass-through threshold is 70% -100% of the load rated voltage and/or load rated current of the load 110, which may indicate that the line side interface 210 and the host interface 120 are stably connected, the device control circuit 150 controls the second control switch 140 to be turned on, so that the host interface 120 supplies power to the load 110.

In some embodiments, the voltage and/or current output by the line side interface 210 to the host interface 120 gradually increases to the load rated voltage and/or load rated current, and the device control circuit 150 detects that the voltage and/or current output by the host interface 120 also gradually increases, and when the voltage and/or current output by the host interface 120 increases to reach the connection threshold, the host interface 120 may be enabled to provide power to the load 110. The host interface 120 may be prevented from suddenly providing a larger voltage and/or current to the load 110, which may cause a shock to the ultrasound imaging apparatus 100.

Illustratively, as shown in FIG. 7, the device control circuitry 150 includes power up/down detection circuitry 151 for detecting the voltage and/or current output by the host interface 120. For example, when the power on/off detection circuit 151 detects that the voltage and/or current output by the host interface 120 reaches a preset connection threshold, the device control circuit 150 outputs a signal for controlling the second control switch 140 to be turned on. For example, the power up/down detection circuit 151 may include a voltage sampling circuit for detecting the voltage output by the host interface 120, and the device control circuit 150 may then detect whether the output voltage reaches a preset voltage connection threshold.

Illustratively, as shown in fig. 7, the device control circuit 150 further includes a second power-on control circuit 152 connected to the second control switch 140, and the second power-on control circuit 152 is further connected to the power-on/power-off detection circuit 151 for controlling the voltage and/or current output by the host interface 120 to the load 110 to gradually increase to the load rated voltage and/or load rated current when the host interface 120 and the load 110 are connected. The impact of the host interface 120 suddenly providing a larger voltage and/or current to the load 110 on the ultrasound imaging device 100 may be further prevented.

For example, the power-on/power-off detection circuit 151 outputs a signal to the second power-on control circuit 152 when the voltage and/or current output by the host interface 120 is not less than a preset connection threshold; the second power-on control circuit 152 controls the operating state of the second control switch 140 to gradually transition to the saturation region through the linear region according to the signal. When the second control switch 140 operates in the linear region, the voltage and/or the current output by the host interface 120 to the load 110 gradually increase; when the second control switch 140 is operated in the saturation region, the voltage and/or current outputted by the host interface 120 to the load 110 reaches the load rated voltage and/or load rated current of the load 110.

In some embodiments, as shown in fig. 7, when the magnetic attraction between the first magnetic member 211 and the second magnetic member 121 is released, the device control circuit 150 may be further configured to determine whether a host power-down condition is satisfied, and control the second control switch 140 to open when the host power-down condition is determined to be satisfied, so as to disconnect the host interface 120 and the load 110. When the device control circuit 150 detects that the voltage and/or current output by the host does not reach the connection threshold, it considers that there is currently a connection instability (for example, connection instability caused by releasing the connection of the magnetic member), and determines that the host power-down condition is satisfied.

Therefore, when the magnetic-type interface of the power supply device 200 is pulled out from the magnetic-type interface of the ultrasonic imaging apparatus 100, the connection between the host interface 120 and the load 110 is disconnected, and the problem that the line-side interface 210 of the power supply device 200 and the host interface 120 are ignited when the host interface 120 and the load 110 are separated due to the fact that electric energy stored in the load 110 such as capacitance and inductance is transmitted to the host interface 120 can be solved. It is also possible to prevent the load 110 from being damaged by the conduction of discharged energy to the load 110 when the power supply device 200 or other charged equipment discharges abnormally to the host interface 120.

For example, in the process of releasing the magnetic attraction between the first magnetic member 211 and the second magnetic member 121, the voltage and/or current output by the host interface 120 may decrease with the release operation, and the device control circuit 150 detects the voltage and/or current output by the host interface 120, and sends a fourth control signal to the second control switch 140 to turn off the second control switch 140 to disconnect the host interface 120 and the load 110 before releasing the magnetic attraction between the first magnetic member 211 and the second magnetic member 121.

Specifically, when the voltage and/or the current output by the host interface 120 is smaller than the preset connection threshold, it is determined that the connection between the host interface 120 and the line side interface 210 of the power supply device 200 is disconnected, or the connection is not stable, and the load 110 cannot be supplied with electric energy according to the requirement. This serves to protect the load 110 by disconnecting the host interface 120 from the load 110.

Illustratively, the power-up/power-down detection circuit 151 of the device control circuit 150 may include, for example, a voltage sampling circuit, which may be used to detect the voltage output by the host interface 120, and the power-up/power-down detection circuit 151 may then detect whether the voltage output by the host interface 120 reaches a preset voltage connection threshold.

Illustratively, the ultrasound imaging apparatus 100 further comprises a second sampling circuit connected between the host interface 120 and the load 110; for example, the second sampling circuit includes a sampling resistor disposed between the host interface 120 and the load 110. The device control circuit 150 detects the sampling current transmitted from the host interface 120 to the load 110 through the second sampling circuit, and controls the second control switch 140 to be turned off when the sampling current of the host interface 120 is not less than the second overcurrent threshold.

Therefore, overcurrent protection of the ultrasonic imaging apparatus 100 can be realized, for example, when the load 110 is short-circuited, if the current transmitted to the load 110 by the host interface 120 exceeds the second overcurrent threshold value by sampling, the second control switch 140 can be controlled to be turned off to stop transmitting the electric energy to the load 110, so that damage to the load 110 due to overcurrent is avoided.

In some embodiments, the device control circuit 150 controls the second control switch 140 to be turned off before the line-side control circuit 240 controls the first control switch 230 to be turned off during the process of releasing the magnetic attraction between the first magnetic member 211 and the second magnetic member 121, so as to protect the ultrasonic imaging device 100 more sensitively.

In some embodiments, as shown in fig. 11, the load 110 of the ultrasound imaging apparatus 100 includes a processor 101 connected to a host interface 120, the processor 101 being disposed on a motherboard 112 of the ultrasound imaging apparatus 100, for example.

Illustratively, the ultrasound imaging device 100 further includes a voltage detection circuit 160.

The voltage detection circuit 160 is connected to the second control switch 140 and the processor 101, for example, and is configured to output a valid detection signal to the processor 101 when detecting that the voltage output by the second control switch 140 reaches a preset operating voltage, and the processor 101 enables the second control switch 140 to supply power to the load 110 according to the valid detection signal.

The preset operating voltage is equal to the load rated voltage of the load 110, for example. The processor 101 enables the load 110 to operate only when the voltage outputted from the second control switch 140 reaches the preset operating voltage. Preventing the load 110 from malfunctioning when the voltage is insufficient, such as inaccurate ultrasonic echo detection.

In some embodiments, the ultrasound imaging apparatus 100 may further include a rechargeable battery 170, and the power supply 200 may charge the rechargeable battery 170 of the ultrasound imaging apparatus 100, for example, the rechargeable battery 170 is charged through the line-side interface 210, the host interface 120, and the second control switch 140. Therefore, when the ultrasound imaging apparatus 100 is not connected to the power supply device 200, the load 110 of the ultrasound imaging apparatus 100 can obtain the electric energy through the rechargeable battery 170, and when the ultrasound imaging apparatus 100 is connected to the power supply device 200, the electric energy can be obtained through the power supply device 200 or the electric energy can be obtained through the rechargeable battery 170.

In some embodiments, as shown in fig. 8, the device control circuit 150 includes a second temperature sensor 153 that is sensitive to temperature, the second temperature sensor 153 being disposed at the host interface 120.

Illustratively, the device control circuitry 150 is configured to disconnect the host interface 120 from the load 110 when the temperature of the host interface 120 is not less than the second temperature threshold. The temperature protection of the interface is realized, and continuous heating when the interface temperature is too high is avoided.

For example, the second temperature sensor 153 includes a second self-healing temperature fuse connected between the host interface 120 and the load 110; for example, a second self-healing temperature fuse, is connected between the host interface 120 and the second control switch 140. When the temperature value of the host interface 120 exceeds the temperature threshold, the second self-healing temperature fuse automatically blows, so that the connection between the host interface 120 and the load 110 is disconnected, and the host interface 120 is stopped from continuously supplying power to the load 110. It is understood that the temperature control in this embodiment may not require the second control switch 140, but rather disconnect the host interface 120 from the load 110 through the first self-healing temperature fuse.

Illustratively, as shown in fig. 9, the second temperature sensor 153 includes a second temperature sensor 1531 disposed at the host interface 120; the second temperature sensor 1531 is configured to output a host-side temperature value that varies according to the temperature of the host interface 120. The line side control circuit 240 is further configured to control the second control switch 140 to open when the host side temperature value is not less than the second temperature threshold value, so as to disconnect the host interface 120 and the load 110.

Illustratively, as shown in fig. 9, the device control circuit 150 further includes a second on/off control circuit 154 connected to a second temperature sensor 1531, the second on/off control circuit 154 being connected to the host interface 120 and the second control switch 140. The second disconnection control circuit 154 reads the temperature of the host interface 120 from the second temperature sensor 1531, and disconnects the host interface 120 and the load 110 when the temperature of the host interface 120 is not less than the second temperature threshold. The second switch control circuit 154 in this example disconnects the host interface 120 and the load 110 by controlling the second control switch 140 to open.

The second on/off control circuit 154 may be connected to the power on/off detection circuit 151, and when the power on/off detection circuit 151 detects that the voltage and/or current output by the host interface 120 is not less than the preset connection threshold, the host interface 120 and the load 110 are connected, and the host interface 120 supplies power to the load 110.

It will be appreciated that the second power-on control circuit 154 may include the second power-on control circuit 152. The second power-on control circuit 152 is used for controlling the voltage and/or current outputted by the host interface 120 to gradually increase to the load rated voltage and/or load rated current when the second power-off control circuit 154 connects the host interface 120 and the load 110.

It is understood that the second power-on control circuit 154 may include a control chip, and the second power-on control circuit 152 may be a built-in circuit of the control chip or a peripheral circuit of the control chip. When the second power-on control circuit 152 is a peripheral circuit, the control chip is connected to the power-on/power-off detection circuit 151 and the second power-on control circuit 152, and when the control chip controls the second control switch to be turned on according to the output of the power-on/power-off detection circuit 151, the second power-on control circuit 152 controls the voltage and/or current output by the host interface 120 to gradually increase to the load rated voltage and/or load rated current.

It is understood that the presence detection circuit 241, the first power-on control circuit 242, the short detection circuit 243, the second delay circuit 250, and the like of the power supply apparatus 200 may be composed of discrete components, for example, an operational amplifier circuit, an RC circuit.

It is understood that the power supply device 200 may also include one or more control chips, such as a single chip. For example, the on-bit detection circuit 241 includes a control chip, and the first power-up control circuit 242 includes a control chip; or the on-site detection circuit 241, the first power-on control circuit 242, the short circuit detection circuit 243, and the second delay circuit 250 are implemented by the same control chip.

It is understood that the presence detection circuit 241, the first power-on control circuit 242, the short circuit detection circuit 243, the second delay circuit 250, and the like of the power supply apparatus 200 may be partially composed of discrete components and may be partially composed of a control chip.

It will be appreciated that the power up/down detection circuit may be a power up detection circuit, a power down detection circuit or a power up and power down detection circuit. It is understood that the ultrasound imaging apparatus of the present application may be a portable ultrasound imaging apparatus with a rechargeable battery, the portable ultrasound imaging apparatus mainly includes a main unit and a flip installed on the main unit in a flip manner, the main unit may include a housing, and the second magnetic member 121 may be disposed on a left side, a right side, or a rear side of the main unit (housing).

In some embodiments, the power-up and power-down control process of the ultrasound imaging system of the present application is as follows:

(1) and (3) electrifying:

before the host interface 120 of the ultrasonic imaging apparatus 100 is connected to the line side interface 210 of the power supply device 200, the line side control circuit 240 controls the first control switch 230 to be turned off, the power module 220 is turned off from the line side interface 210, and the line side interface 210 does not supply power to the host interface 120 because the detection terminal 212 of the line side interface 210 does not receive the characteristic signal output by the host interface 120;

after the line-side interface 210 and the host interface 120 are magnetically attracted to each other to establish a connection, the characteristic circuit 130 may feed back a characteristic signal, such as a voltage signal, to the detection terminal 212 through the host interface 120, and the line-side control circuit 240 determines, according to the characteristic signal, that the line-side interface 210 is connected to the host interface 120, and may control the first control switch 230 to be turned on, so that the line-side interface 210 may supply power to the host interface, or may further control the line-side interface 210 to output, through the first power-on control circuit 242, a voltage and/or a current gradually increasing to a load rated voltage and/or a load rated current to the host interface 120;

when the host interface 120 of the ultrasound imaging apparatus 100 receives the voltage and/or current provided by the line side interface 210, the power-on/power-off detection circuit 151 of the ultrasound imaging apparatus detects whether the voltage and/or current output by the host interface reaches a connection threshold, and turns on the second control switch 140 only after the voltage and/or current reaches the connection threshold, so that the host interface 120 may supply power to the load 110, or may further control the host interface 120 to output the voltage and/or current gradually increasing to the load rated voltage and/or load rated current to the load 110 through the second power-on control circuit 152;

the ultrasound imaging apparatus 100 may further include a voltage detection circuit 160 between the second control switch 140 and the load 110, wherein the voltage detection circuit 160 outputs a valid detection signal to the processor 101 when it is determined that the voltage output by the second control switch 140 reaches the preset operating voltage, and the processor 101 further enables the second control switch 140 to supply power to the load 110.

The power-on control process relates to detection control links such as interface connection detection, line side power-on control, host side power-on detection, host side power-on control, host side voltage control and the like. Some embodiments of this application can include above-mentioned whole or partial detection control link, avoid magnetism to inhale interface connection process and appear any unexpected circumstances such as temperature rise of striking sparks, protection equipment safety.

(2) Power-down control:

when the magnetic attraction connection between the connected ultrasonic imaging device 100 and the power supply apparatus 200 is released, the connection between the host interface 120 and the line side interface 210 is about to be disconnected and enters a state of unstable connection, the power-on/power-off detection circuit 151 of the ultrasonic imaging device 100 detects that the voltage and/or current output by the host interface is lower than a connection threshold, and the device control circuit 150 controls the second control switch 140 to be disconnected according to the detection, so that the rear-stage load 110 is disconnected from the circuit of the ultrasonic imaging system;

after the magnetic connection between the host interface 120 and the line side interface 210 is disconnected, the detection terminal 212 cannot continuously receive the characteristic signal fed back by the host interface 120, and the line side control circuit 240 controls the first control switch 230 to be disconnected, so that the power module 220 no longer supplies power to the line side interface 210.

The power failure control process relates to detection control links such as host side power failure detection, interface connection detection and the like. Some embodiments of this application can include above-mentioned whole or partial detection control link, avoid appearing any unexpected circumstances such as temperature rise of striking sparks when relieving the connection of magnetism interface, protection equipment safety.

Referring to fig. 12 in conjunction with the foregoing embodiments, fig. 12 shows a power down control method of an ultrasound imaging system according to an embodiment of the present application.

As shown in fig. 12, the power down control method of the ultrasound imaging system includes step S110.

Step S110, when the magnetic attraction between the first magnetic member and the second magnetic member is released, the device control circuit controls the second control switch to enter an off state, so as to disconnect the load from the host interface.

Illustratively, the device control circuit controls the second control switch to enter an open state, including:

detecting the voltage and/or current output by the line side interface to the host interface;

and if the voltage and/or the current output by the host interface is smaller than a preset connection threshold value, sending a fourth control signal to the second control switch to disconnect the second control switch.

Exemplarily, the power supply device further includes:

a first control switch connected to the power supply module and the line side interface, for controllably switching between on and off states so as to connect or disconnect the power supply module and the line side interface; and

the line side control circuit is respectively in signal connection with the line side interface and the first control switch;

the method further comprises the following steps: when the magnetic attraction between the first magnetic piece and the second magnetic piece is released, the line side control circuit controls the first control switch to enter an off state so as to disconnect the power supply module from the line side interface.

Illustratively, the line side control circuit controls the first control switch to enter an off state, including:

detecting whether the line side interface is connected with a host interface of the ultrasonic imaging equipment;

and if the line side interface is not connected to the host interface, sending a third control signal to the first control switch to disconnect the first control switch so as to disconnect the line side interface from the power supply module.

Illustratively, the line side interface includes a detection terminal for electrical connection with the ultrasound imaging device;

the detecting whether the line side interface is connected with a host interface of the ultrasonic imaging equipment comprises:

detecting whether the signal received from the detection terminal belongs to a characteristic signal representing the ultrasonic imaging equipment;

if the characteristic signal is not detected, it is determined that the magnetic attraction between the first magnetic member and the second magnetic member is released, and the line side interface is not connected to the host interface.

For example, before the line side control circuit controls the first control switch to be turned off, the device control circuit controls the second control switch to be turned off.

The specific principle and implementation manner of the power-down control method of the ultrasonic imaging system provided by the embodiment of the application are similar to those of the ultrasonic imaging system of the previous embodiment, and are not described herein again.

According to the ultrasonic imaging system and the power-down control method thereof provided by the embodiment of the application, the power supply device and the ultrasonic imaging equipment are connected in a magnetic adsorption mode, and users do not need to plug and unplug forcefully; still when drawing out from ultrasonic imaging equipment's magnetism formula interface through the formula interface of inhaling at power supply unit's magnetism, the connection of disconnection host computer interface and load prevents that electric energy transmission to the host computer interface of storage such as electric capacity, inductance in the load from causing host computer interface and power supply unit's line side interface to appear the problem that the interface struck sparks when the separation, can also prevent for example when electrified equipment such as power supply unit discharges to the host computer interface is unusual, the energy conduction of discharging causes the harm to the load.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It should be noted that the descriptions of "first", "second", etc. used in the specification and the appended claims of this application are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An ultrasonic imaging system is characterized in that the ultrasonic imaging system comprises an ultrasonic imaging device and a power supply device for supplying power to the ultrasonic imaging device; the power supply device includes: the line side interface is provided with a first magnetic piece, and the power supply module is used for supplying electric energy to the line side interface;

the ultrasonic imaging apparatus includes:

a load;

2. The system of claim 1, wherein the device control circuit to control the second control switch to open comprises: and detecting the voltage and/or the current output by the host interface, and sending a fourth control signal to the second control switch when the voltage and/or the current output by the host interface is smaller than a preset connection threshold value, so that the second control switch is disconnected to disconnect the connection between the host interface and the load.

3. The system of claim 2, wherein the device control circuitry includes voltage sampling circuitry for detecting a voltage output by the host interface.

4. The system of claim 1, wherein the ultrasound imaging device further comprises a second sampling circuit connected between the host interface and the load;

the device control circuit detects the sampling current transmitted to the load by the host interface through the second sampling circuit, and controls the second control switch to be switched off when the sampling current of the host interface is not less than a second overcurrent threshold value.

5. The system according to any one of claims 1 to 4, wherein the power supply device further comprises:

a first control switch connected to the power supply module and the line side interface, for controllably switching between on and off states so as to connect or disconnect the power supply module and the line side interface;

and the line side control circuit is in signal connection with the line side interface and the first control switch respectively and is used for controlling the first control switch to be disconnected when the magnetic adsorption of the first magnetic piece and the second magnetic piece is removed so as to disconnect the power module and the line side interface.

6. The system of claim 5, wherein the line side control circuit to control the first control switch to open comprises: and detecting a device signal output by the line side interface, and sending a third control signal to the first control switch to disconnect the first control switch when the device signal is detected to be a characteristic signal which does not characterize the ultrasonic imaging device.

7. The system of claim 5, wherein the device control circuit controls the second control switch to open before the line side control circuit controls the first control switch to open.

8. The system of claim 6, wherein the characterization circuit comprises an impedance circuit;

when the host interface is connected with the line side interface, the characteristic circuit transmits a feedback voltage signal to the line side interface according to an electric signal output by the line side interface, wherein the feedback voltage signal is the characteristic signal; and the line side control circuit is also used for sending a first control signal to the first control switch to enable the first control switch to be conducted when the feedback voltage signal is detected.

9. A method of power down control of an ultrasound imaging system of claim 1, the method comprising:

when the magnetic adsorption between the first magnetic piece and the second magnetic piece is removed, the equipment control circuit controls the second control switch to enter a disconnection state when the power failure condition of the host is met, so that the load is disconnected from the host interface.

10. The method of claim 9, wherein the device control circuitry determines that a host power down condition is satisfied and controls the second control switch to enter an off state, comprising:

11. The method according to claim 9 or 10, wherein the power supply device further comprises:

the method further comprises the following steps: when the magnetic adsorption between the first magnetic piece and the second magnetic piece is removed, the line side control circuit controls the first control switch to enter a disconnection state when determining that a line side power-down condition is met, so that the power supply module is disconnected from the line side interface.

12. The method of claim 11, wherein the line side control circuitry determining that a line side power down condition is satisfied controls the first control switch to enter an open state, comprising:

13. The method of claim 12, wherein the line-side interface comprises a detection terminal for electrical connection with the ultrasound imaging device;

14. The method of claim 11, wherein the device control circuit controls the second control switch to open before the line side control circuit controls the first control switch to open.