WO2022032946A1 - Electronic device, movable platform, and load device for movable platform - Google Patents

Abstract

An electronic device. A second terminal and a grounded third terminal are arranged at a first device interface of a first electronic device. In this way, when the first device interface is connected to a second electronic device, the second terminal can be grounded by means of the second electronic device and the third terminal, such that a switch circuit connected to the second terminal enables a power source input end to be in communication with a first terminal, and the first terminal thus applies a voltage to the second electronic device; and when the first device interface is not connected to the second electronic device, the switch circuit shuts off the communication of the power source input end with the first terminal. Therefore, when the first electronic device is not connected to another electronic device, the interface is not charged, such that the interface, when exposed to the outside, can be prevented from being corroded due to always being charged; moreover, the circuit is simple, the cost is low, and the applicability is strong. Further provided are a movable platform, and a load device for a movable platform.

Description

Electronic equipment, movable platforms and payloads for movable platforms technical field

The present application relates to the technical field of electronic devices, and in particular, to an electronic device, a movable platform and a load device for the movable platform.

Background technique

There are many electronic devices that need to be connected with other electronic devices to be powered by and/or work with other electronic devices. When the electronic device is not connected to another electronic device, if the interface is charged, it is easy to corrode the interface and cause poor contact. Usually, it is possible to determine whether the two electronic devices are connected through communication between the two electronic devices, and after the connection is determined, one of the electronic devices supplies power to the other electronic device, which is costly.

SUMMARY OF THE INVENTION

Based on this, the present application provides an electronic device, a movable platform, and a load device for the movable platform, aiming to solve the technical problems of the interface being charged when the electronic device is not connected to another electronic device.

In a first aspect, the present application provides a first electronic device, the first electronic device comprising:

Connect the power input terminal of the power supply and the first ground terminal;

a first device interface, comprising a first terminal, a second terminal and a third terminal, wherein the third terminal is connected to the first ground terminal;

a switch circuit, the switch circuit is connected between the power input end and the first terminal, and is connected to the second terminal;

When the first device interface is connected to a second electronic device, the second terminal is connected to the first ground terminal through the second electronic device and the third terminal, so that the switch circuit is connected to the power input terminal and the first terminal such that the first terminal applies a voltage to the second electronic device;

When the first device interface is not connected to the second electronic device, the second terminal is suspended so that the switch circuit disconnects the connection between the power input end and the first terminal.

In a second aspect, the present application provides a second electronic device, the second electronic device comprising:

a load, the load has a power receiving terminal and a second ground terminal;

The second device interface includes a fourth terminal, a fifth terminal and a sixth terminal, wherein the fourth terminal is connected to the power receiving end, and the fifth terminal is connected to the sixth terminal;

When the second device interface is connected to the first electronic device, the fifth terminal and the sixth terminal are connected to the second terminal of the first electronic device and the grounded third terminal, so that the first electronic device is connected to the ground. The fourth terminal applies a voltage.

In a third aspect, the present application provides a movable platform, the movable platform is equipped with a load device, and the movable platform includes:

The power input terminal and the first ground terminal of the power supply can be connected;

a first device interface, comprising a first terminal, a second terminal and a third terminal, wherein the third terminal is connected to the first ground terminal;

a switch circuit, the switch circuit is connected between the power input end and the first terminal, and is connected to the second terminal;

When the first device interface is connected to the load device, the second terminal is connected to the first ground terminal through the load device and the third terminal, so that the switch circuit is connected to the power input terminal and the the first terminal so that the first terminal applies a voltage to the load device;

When the first device interface is not connected to the load device, the second terminal is suspended so that the switch circuit disconnects the connection between the power input terminal and the first terminal.

In a fourth aspect, the present application provides a load device for a movable platform, the load device is mounted on the movable platform, and the load device includes:

a load, the load has a power receiving terminal and a second ground terminal;

The second device interface includes a fourth terminal, a fifth terminal and a sixth terminal, wherein the fourth terminal is connected to the power receiving end, and the fifth terminal is connected to the sixth terminal;

When the second device interface is connected to the movable platform, the fifth terminal and the sixth terminal communicate with the second terminal of the movable platform and the grounded third terminal, so that the movable platform can be connected to the movable platform. A voltage is applied to the fourth terminal.

Embodiments of the present application provide an electronic device, a movable platform, and a load device for the movable platform. By arranging a second terminal and a grounded third terminal on the first device interface of the first electronic device, the first When the device interface is connected to the second electronic device, the second terminal can be grounded through the second electronic device and the third terminal, so that the switch circuit connected to the second terminal is connected to the power input terminal and the first terminal, so that the first terminal is connected to the second terminal. The electronic device applies a voltage; and when the first device interface is not connected to the second electronic device, the switch circuit disconnects the connection between the power input end and the first terminal. Therefore, when the first electronic device is not connected to another electronic device, the interface is not electrified, which can protect the exposed interface from being corroded by constant electrification, and has a simple circuit, low cost, and strong applicability.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to limit the disclosure of the present application.

Description of drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of first and second electronic devices provided by an embodiment of the present application;

2 is a schematic block diagram of a movable platform and a load device provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of first and second electronic devices provided by another embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The flowcharts shown in the figures are for illustration only, and do not necessarily include all contents and operations/steps, nor do they have to be performed in the order described. For example, some operations/steps can also be decomposed, combined or partially combined, so the actual execution order 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 features in the embodiments may be combined with each other without conflict.

FIG. 1 is a schematic structural diagram of a first electronic device 100 according to an embodiment of the present application. The first electronic device 100 can be detachably connected to the second electronic device 200 , and when the second electronic device 200 is connected, a voltage can be applied to the second electronic device 200 .

In some embodiments, the first electronic device 100 may include a movable platform, the second electronic device 200 may include a load device, and the movable platform can carry the load device.

Exemplarily, the movable platform includes at least one of the following: an unmanned aerial vehicle, a gimbal, and an unmanned vehicle. Further, the aircraft can be a rotary-wing drone, such as a quad-rotor drone, a hexa-rotor drone, an octa-rotor drone, or a fixed-wing drone; the gimbal can be a handheld gimbal, or It is a gimbal that can be mounted on unmanned aerial vehicles or unmanned vehicles.

Exemplarily, the load device includes at least one of the following: a photographing device, an image processing device, a radar device, a sensor device, a motion device, a communication device, and an energy storage device. Wherein, the photographing apparatus may include a camera, a video camera, or other equipment having a photographing function, such as a smart terminal and the like. The image processing device can be used to process the image to obtain the processed image and/or the information in the image, the radar device and the sensor device can be used to sense the surrounding environment and obstacles, and the motion device can be used to move the movable platform Or adjust the attitude, the communication device is used to establish a communication connection between the movable platform and other devices, and the energy storage device is used to store the electric energy output by the movable platform.

In some embodiments, as shown in FIG. 2 , the photographing system includes a movable platform 700 and an image processing device 600, wherein the image processing device 600 can be electrically connected to the movable platform 700, and the image processing device can be electrically connected to the photographing device Device 500. The photographing apparatus 500 includes a camera, a video camera, or other equipment having a photographing function, such as a smart terminal and the like.

Exemplarily, the photographing device 500 may be provided separately from the movable platform 700 , or may be provided integrally with the movable platform 700 .

Exemplarily, the image processing apparatus 600 can be carried by the movable platform 700 , or carried by the photographing apparatus 500 , or can also be carried between the movable platform 700 and the photographing apparatus 500 .

Exemplarily, as shown in FIG. 2 , the image processing device 600 can be detachably connected to the movable platform 700 , and an electrical interface is provided at the connection portion, which can be electrically connected to the movable platform 700 .

For example, the image processing apparatus 600 can also be connected to the photographing apparatus 500 through the cable 10, for example, the photographing apparatus 500 may be connected to the photographing apparatus 500 through an HDMI (High Definition Multimedia Interface, high-definition multimedia interface) cable.

In some embodiments, the image processing device 600 is configured to acquire the image captured by the photographing device 500 through an electrical connection, preprocess the image based on a preset image processing model, and transmit the preprocessed information to the movable platform 700, so that the movable platform 700 can perform preset tasks according to the preprocessed information.

Exemplarily, preprocessing the image includes at least one of the following: recognizing whether there is preset content in the image (such as recognizing faces, gestures, etc. in the image), determining the position of the shooting target in the image, predicting the shooting target position in the image, etc.

In some embodiments, the image processing apparatus 600 acquires the image signal from the photographing apparatus 500 through a communication connection line and a preset communication protocol.

The image processing device 600 sends an image signal, or a preprocessed image signal, to the movable image platform 700 through a communication connection line and a preset communication protocol.

In some embodiments, the image processing apparatus 600 includes a wireless communication module, and the image processing apparatus 600 can establish a communication connection with other electronic devices through the wireless communication module, for example, establish a communication connection with electronic devices such as a mobile phone, a tablet, and other multimedia processing equipment, And wirelessly send image signals to other electronic devices.

It is worth noting that the image processing apparatus 600 can set corresponding image processing and image transmission functions according to actual functional requirements. This is only an example, and the application does not specifically limit the functions of the image processing apparatus 600 .

Exemplarily, the movable platform 700 and/or the image processing device 600 are provided with control buttons, and the movable platform 700 is configured to control the photographing device 500 to perform at least one of the following tasks according to the user's operation of the control buttons: focus, gesture Adjust, target follow.

Exemplarily, the movable platform 700 is configured to adjust the posture of the photographing device 500 according to the position of the photographing target outputted by the image processing device 600 in the image, so as to follow the photographing target in the field of view of the photographing device 500 .

In other embodiments, the first electronic device 100 is not limited to include a movable platform, and the second electronic device 200 is not limited to include a load device. Exemplarily, the first electronic device 100 may include a power adapter, and the second electronic device 200 may include a device that can be powered by the power adapter, such as a computer, a remote control, a rechargeable battery, and the like.

Referring to FIG. 1 , the first electronic device 100 includes a power input terminal VCC_IN and a first ground terminal GND_1 capable of being connected to a power source, a first device interface 120 and a switch circuit 130 . Wherein, the power supply can be detachably connected to the first electronic device 100, or can be integrated with the first electronic device 100.

The power source may include, for example, at least one of a rechargeable battery, a voltage conversion circuit, and a voltage regulator circuit.

Specifically, the first device interface 120 is used to connect to the second electronic device 200 , for example, the first device interface 120 is used to connect to the second device interface 220 of the second electronic device 200 .

As shown in FIG. 1 , the first device interface 120 includes a first terminal TP1 , a second terminal TP2 and a third terminal TP3 , wherein the third terminal TP3 is connected to the first ground terminal GND_1 .

It can be understood that the first device interface 120 may only include the first terminal TP1, the second terminal TP2 and the third terminal TP3, or may also include other terminals, for example, including a terminal for transmitting digital signals, including a grounding terminal or Including terminals for transmitting analog signals, etc.

Specifically, as shown in FIG. 1 , the switch circuit 130 is connected between the power input terminal VCC_IN and the first terminal TP1, and is connected to the second terminal TP2. When the first device interface 120 is connected to the second electronic device 200, the second terminal TP2 is connected to the first ground terminal GND_1 through the second electronic device 200 and the third terminal TP3, so that the switch circuit 130 is connected to the power input terminal VCC_IN and the first terminal TP1 to The first terminal TP1 is made to apply a voltage to the second electronic device 200 .

Exemplarily, when the level of the second terminal TP2 is low, the switch circuit 130 can connect the power input terminal VCC_IN and the first terminal TP1 to enable the power supply to output power through the first device interface 120 . Therefore, the second electronic device 200 can obtain power to cooperate with the first electronic device 100 .

In some embodiments, after the second electronic device 200 obtains power from the first device interface 120, it can establish communication with the first electronic device 100, for example, through an RS-232 port, an RS-485 port, or a serial communication (UART) The port and the like establish communication with the first electronic device 100 , so as to realize the cooperative work of the second electronic device 200 and the first electronic device 100 .

In some embodiments, the first device interface 120 is not connected to the second electronic device 200. For example, when the second electronic device 200 is separated from the first device interface 120, the first terminal TP1, the second terminal TP2 and the third terminal TP3 are all Separated from the terminal of the second electronic device 200 , the second terminal TP2 is suspended so that the switch circuit 130 disconnects the connection between the power input terminal VCC_IN and the first terminal TP1 .

Exemplarily, when the second terminal TP2 is floating, the switch circuit 130 disconnects the connection between the power input terminal VCC_IN and the first terminal TP1 , thereby stopping the output of power through the first device interface 120 .

In some embodiments, as shown in FIG. 1 , the switch circuit 130 includes a switch element Q1 and a switch control circuit. The switching element Q1 is connected between the power input terminal VCC_IN and the first terminal TP1, and is connected to the second terminal TP2 through a switch control circuit. The switch control circuit can control the switching element Q1 to be turned on according to the level of the second terminal TP2 to connect the power input terminal VCC_IN and the first terminal TP1, or control the switching element Q1 to be turned off to disconnect the power input terminal VCC_IN and the first terminal TP1.

Exemplarily, when the first device interface 120 is connected to the second electronic device 200, the second terminal TP2 is connected to the first ground terminal GND_1, the level of the second terminal TP2 is low, and the switch control circuit controls the switch element Q1 to be turned on. to connect the power input terminal VCC_IN and the first terminal TP1.

Exemplarily, when the first device interface 120 is not connected to the second electronic device 200, the second terminal TP2 is left floating, and the switch control circuit controls the switch element Q1 to be turned off to disconnect the power input terminal VCC_IN and the first terminal TP1.

In some embodiments, the switch control circuit includes a voltage divider circuit connected between the power input terminal VCC_IN and the second terminal TP2, and the voltage divider output terminal of the voltage divider circuit is connected to the control terminal of the switching element Q1.

Exemplarily, as shown in FIG. 1 , the voltage dividing circuit includes a first resistor R1 between the power input terminal VCC_IN and the voltage dividing output terminal, and a second resistor R2 between the voltage dividing output terminal and the second terminal TP2. The connection point of the first resistor R1 and the second resistor R2 is used as the voltage dividing output terminal to connect to the control terminal of the switching element Q1.

It can be understood that when the second terminal TP2 is floating, the level of the voltage divider output terminal and the level of the control terminal of the switching element Q1 are equal to the level of the power input terminal VCC_IN, thus turning off the switching element Q1. When the second terminal TP2 is connected to the first ground terminal GND_1, the level of the voltage divider output terminal and the level of the control terminal of the switching element Q1 are greater than 0 and less than the level of the power input terminal VCC_IN, so that the switching element Q1 can be controlled to be turned on to connect the power input terminal VCC_IN and the first terminal TP1.

Exemplarily, the resistance values of the first resistor R1 and the second resistor R2 are determined according to the voltage of the power input terminal VCC_IN and the turn-on threshold of the switching element Q1. Specifically, when the first device interface 120 is connected to the second electronic device 200, the voltage difference between the voltage divider output terminal and the power supply output terminal is greater than or equal to the turn-on threshold, so that the switching element Q1 can be turned on.

It is worth noting that the switch circuit 130 and the switch control circuit can be set according to actual needs, which are only for illustration, and the present application does not specifically limit the circuits of the switch circuit 130 and the switch control circuit. For example, the switch circuit 130 and the switch control circuit may be implemented by an integrated chip, an operational amplifier, or the like.

In some embodiments, the switch circuit 130 includes a delay circuit, and the delay circuit is used to connect the switch circuit 130 to the power input terminal VCC_IN and the first terminal TP1 after a set time when the second terminal TP2 is connected to the first ground terminal GND_1 so that the first terminal TP1 applies a voltage to the second electronic device 200 . Playing the role of slow start, it can prevent sparks when the first device interface 120 is not reliably connected to the second electronic device 200 .

Exemplarily, the switch control circuit includes a delay circuit, and the delay circuit is used for enabling the switch control circuit to control the switch element Q1 to be turned on after a set time when the second terminal TP2 is connected to the first ground terminal GND_1.

In some embodiments, as shown in FIG. 1 , the first resistor R1 is further connected with a first capacitor C1 in parallel. When the first device interface 120 is connected to the second electronic device 200, the first capacitor C1 makes the level of the control terminal of the switching element Q1 turn on after a period of time, which plays the role of slow start and can prevent the first device from turning on. The interface 120 sparks when the second electronic device 200 is not reliably connected. Exemplarily, the first capacitor C1 and the second resistor R2 can be determined according to the time from when the first device interface 120 is connected to the second electronic device 200 to when the switching element Q1 is turned on. The longer the time, the more the first capacitor C1 is. Smaller and/or larger second resistance R2.

In some embodiments, as shown in FIG. 1 , a second capacitor C2 and a third resistor R3 are connected between the control terminal of the switching element Q1 and the first terminal TP1 , and the second capacitor C2 and the third resistor R3 are connected in series. When the first electronic device 100 and the second electronic device 200 are plugged and unplugged under power, the devices can be prevented from being damaged by an inrush voltage or an inrush current.

It is worth noting that the delay circuit can be set according to actual requirements, and this is only an example, and the present application does not specifically limit the form of the delay circuit. For example, the delay circuit can be implemented by an integrated chip, an inverter, or the like.

Referring to FIG. 1, the second electronic device 200 includes a load and a second device interface 220, wherein the load is connected to the second device interface 220, the second device interface 220 is used to connect to the first electronic device 100, and the second device interface 220 is connected to the first device interface 220. When an electronic device 100 is used, the load can obtain power from the first electronic device 100 .

In some embodiments, the second electronic device 200 includes at least one of the following: a photographing device, an image processing device, a radar device, a sensor device, a motion device, a communication device, and an energy storage device. Exemplarily, the load may include at least one of the following: a sensor, a motor, a chip, a microphone, a speaker, and a rechargeable battery.

Specifically, as shown in FIG. 1 , the load has a power receiving terminal VDD_IN and a second ground terminal GND_2 .

As shown in FIG. 1 , the second device interface 220 is used to connect to the first electronic device 100 , and the second device interface 220 includes a fourth terminal TP4 , a fifth terminal TP5 and a sixth terminal TP6 , wherein the fourth terminal TP4 is connected to the power receiving terminal VDD_IN, the fifth terminal TP5 and the sixth terminal TP6 are connected.

It can be understood that the second device interface 220 may only include the fourth terminal TP4, the fifth terminal TP5 and the sixth terminal TP6, or may also include other terminals, for example, including a terminal for transmitting digital signals, including a grounding terminal or Including terminals for transmitting analog signals, etc.

Specifically, since the fifth terminal TP5 and the sixth terminal TP6 are connected, when the second device interface 220 is connected to the first electronic device 100 , the fifth terminal TP5 and the sixth terminal TP6 are connected to the second terminals TP2 and TP2 of the first electronic device 100 . The third terminal TP3 is grounded so that the first electronic device 100 applies a voltage to the fourth terminal TP4.

As shown in FIG. 1 , when the second device interface 220 is connected to the first electronic device 100 , the second terminal TP2 of the first electronic device 100 is connected to the fifth terminal TP5 of the second device interface 220 , and the third terminal of the first electronic device 100 is connected. TP3 is connected to the sixth terminal TP6 of the second device interface 220. Since the fifth terminal TP5 is connected to the sixth terminal TP6, and the third terminal TP3 is connected to the first ground terminal GND_1, the second terminal TP2 of the first electronic device 100 is The second electronic device 200 and the third terminal TP3 are connected to the first ground terminal GND_1, so that the switch circuit 130 of the first electronic device 100 can be connected to the power input terminal VCC_IN and the first terminal TP1, so that the first terminal TP1 is connected to the second electronic device 200 Apply voltage.

Exemplarily, when the level of the second terminal TP2 is low, the switch circuit 130 of the first electronic device 100 can connect the power input terminal VCC_IN and the first terminal TP1 to enable the power supply to output power through the first device interface 120 . Therefore, the second electronic device 200 can obtain power to cooperate with the first electronic device 100 .

In some embodiments, after the second electronic device 200 obtains power from the first device interface 120, it can establish communication with the first electronic device 100, for example, through an RS-232 port, an RS-485 port, or a serial communication (UART) The port and the like establish communication with the first electronic device 100 , so as to realize the cooperative work of the second electronic device 200 and the first electronic device 100 .

In some embodiments, when the first device interface 120 is not connected to the second electronic device 200 , the second terminal TP2 is left floating so that the switch circuit 130 disconnects the power input terminal VCC_IN from the first terminal TP1 .

Exemplarily, when the second terminal TP2 is floating, the switch circuit 130 disconnects the connection between the power input terminal VCC_IN and the first terminal TP1 , thereby stopping the output of power through the first device interface 120 .

In some embodiments, as shown in FIG. 1 , both the fifth terminal TP5 and the sixth terminal TP6 are connected to the second ground terminal GND_2. When the second device interface 220 is connected to the first electronic device 100, the first ground terminal GND_1 of the first electronic device 100 and the second ground terminal GND_2 of the second electronic device 200 share the same ground, and the first electronic device 100 can connect to the second electronic device 100. Device 200 is powered.

In some embodiments, as shown in FIG. 3 , the second electronic device 200 may be connected to the second ground terminal GND_2 by at least one other terminal TP8 except the fourth terminal TP4 , the fifth terminal TP5 and the sixth terminal TP6 , the first At least one other terminal TP7 of the electronic device 100 except the first terminal TP1, the second terminal TP2 and the third terminal TP3 is also connected to the first ground terminal GND_1; when the second device interface 220 is connected to the first electronic device 100, it is connected to the second terminal TP7. The terminal TP8 of the ground terminal GND_2 can be connected to the terminal TP7 connected to the first ground terminal GND_1, so that the first ground terminal GND_1 of the first electronic device 100 and the second ground terminal GND_2 of the second electronic device 200 share the same ground, and the first electronic device The 100 may supply power to the second electronic device 200 .

In some embodiments, as shown in FIG. 1 , the fifth terminal TP5 and the sixth terminal TP6 may be provided separately; or as shown in FIG. 3 , the fifth terminal TP5 and the sixth terminal TP6 may be provided integrally.

In the electronic device, the movable platform and the load device for the movable platform provided by the foregoing embodiments of the present application, by setting the second terminal and the grounded third terminal on the first device interface of the first electronic device, the first device When the interface is connected to the second electronic device, the second terminal can be grounded through the second electronic device and the third terminal, so that the switch circuit connected to the second terminal is connected to the power input terminal and the first terminal, so that the first terminal is connected to the second electronic device. The device applies voltage; and when the first device interface is not connected to the second electronic device, the switch circuit disconnects the connection between the power input end and the first terminal. Therefore, when the first electronic device is not connected to another electronic device, the interface is not electrified, which can protect the exposed interface from being corroded by constant electrification, and has a simple circuit, low cost, and strong applicability.

It should be noted that the descriptions involving "first", "second", etc. in this application are only for the purpose of description, and should not be construed as indicating or implying their relative importance or implying the number of indicated technical features . Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature.

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

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalents within the technical scope disclosed in the present application. Modifications or substitutions shall be covered by the protection scope of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (12)

A first electronic device, characterized in that the first electronic device comprises: Connect the power input terminal of the power supply and the first ground terminal; a first device interface, comprising a first terminal, a second terminal and a third terminal, wherein the third terminal is connected to the first ground terminal; a switch circuit, the switch circuit is connected between the power input end and the first terminal, and is connected to the second terminal; When the first device interface is connected to a second electronic device, the second terminal is connected to the first ground terminal through the second electronic device and the third terminal, so that the switch circuit is connected to the power input terminal and the first terminal such that the first terminal applies a voltage to the second electronic device; When the first device interface is not connected to the second electronic device, the second terminal is suspended so that the switch circuit disconnects the connection between the power input end and the first terminal. The first electronic device according to claim 1, wherein the switch circuit comprises a switch element and a switch control circuit, the switch element is connected between the power input terminal and the first terminal, and is connected through the switch element and the switch control circuit. the switch control circuit is connected to the second terminal; When the second terminal is connected to the first ground terminal, the switch control circuit controls the switch element to conduct. The first electronic device according to claim 2, wherein the switch control circuit comprises a voltage dividing circuit connected between the power input terminal and the second terminal, and the voltage dividing circuit of the voltage dividing circuit The output terminal is connected to the control terminal of the switching element. The first electronic device according to claim 3, wherein the voltage dividing circuit comprises a first resistor between the power input terminal and the voltage dividing output terminal, and the voltage dividing output terminal and the voltage dividing output terminal. a second resistor between the second terminals, and the resistance values of the first resistor and the second resistor are determined according to the voltage of the power input terminal and the turn-on threshold of the switching element. The first electronic device according to claim 4, wherein the first resistor is further connected with a first capacitor in parallel. The first electronic device according to any one of claims 2-5, wherein a second capacitor and a third resistor are connected between the control end of the switching element and the first terminal, and the second The capacitor and the third resistor are connected in series. The first electronic device according to claim 1 or 2, wherein the switch circuit comprises a time delay circuit, and the time delay circuit is used to set the time delay circuit when the second terminal is connected to the first ground terminal. After a predetermined time, the switch circuit is connected to the power input terminal and the first terminal, so that the first terminal applies a voltage to the second electronic device. A second electronic device, characterized in that the second electronic device comprises: a load, the load has a power receiving terminal and a second ground terminal; The second device interface includes a fourth terminal, a fifth terminal and a sixth terminal, wherein the fourth terminal is connected to the power receiving end, and the fifth terminal is connected to the sixth terminal; When the second device interface is connected to the first electronic device, the fifth terminal and the sixth terminal are connected to the second terminal of the first electronic device and the grounded third terminal, so that the first electronic device is connected to the ground. The fourth terminal applies a voltage. The second electronic device according to claim 8, wherein the fifth terminal and the sixth terminal are both connected to the second ground terminal. The second electronic device according to claim 8 or 9, characterized in that, The fifth terminal and the sixth terminal are provided separately, or the fifth terminal and the sixth terminal are provided integrally. A movable platform, characterized in that the movable platform can carry a load device, and the movable platform comprises: The power input terminal and the first ground terminal of the power supply can be connected; a first device interface, comprising a first terminal, a second terminal and a third terminal, wherein the third terminal is connected to the first ground terminal; a switch circuit, the switch circuit is connected between the power input end and the first terminal, and is connected to the second terminal; When the first device interface is connected to the load device, the second terminal is connected to the first ground terminal through the load device and the third terminal, so that the switch circuit is connected to the power input terminal and the the first terminal so that the first terminal applies a voltage to the load device; When the first device interface is not connected to the load device, the second terminal is suspended so that the switch circuit disconnects the connection between the power input terminal and the first terminal. A load device for a movable platform, characterized in that, the load device is mounted on the movable platform, and the load device comprises: a load, the load has a power receiving terminal and a second ground terminal; The second device interface includes a fourth terminal, a fifth terminal and a sixth terminal, wherein the fourth terminal is connected to the power receiving end, and the fifth terminal is connected to the sixth terminal; When the second device interface is connected to the movable platform, the fifth terminal and the sixth terminal communicate with the second terminal of the movable platform and the grounded third terminal, so that the movable platform can be connected to the movable platform. A voltage is applied to the fourth terminal.

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