CN2369450Y - Multi-light source operating lamp circuit control device - Google Patents

Abstract

A circuit controller for operating lamp with multiple light sources is composed of power supply loop, switch loop, main and auxiliary lamps, a group of control loop with microprocessor, channel element, and shaping element. The utility model discloses can utilize the pulse wave to listen and keep watch on the main light (or the auxiliary lamp) and put out the condition, impel microprocessor automatic control to start the auxiliary lamp return circuit and keep watch on.

Description

Multi-light source operating lamp circuit control device

The utility model relates to a multi-light source operating lamp circuit control device, in particular to a circuit control device which utilizes pulse waves to detect and monitor the main lamp (or auxiliary lamp) on and off, prompting a microprocessor to automatically control and start the auxiliary lamp circuit and monitor.

Each reflector of the known small multi-mirror surgical light is equipped with a light bulb as a light source and focused on the same plane of the surgical site; therefore, when any of the light bulbs expires, the impact on the illumination is limited. As far as the lamp is concerned, since it only has one light source and one reflector for projection, a spare auxiliary bulb must be installed on it to prevent the operation from being completely dark when the life of the main bulb expires and affecting the operation. conduct. Therefore, for the sake of safety, if the control system can be installed, the control circuit in the control system can immediately detect when the life of the main light bulb is over, and immediately start the spare auxiliary light bulb to ensure the illumination required during the operation.

In the existing light bulb failure detection structure, a detector is connected from the control circuit to the edge of the light bulb, which directly senses the lighting and extinction of the light bulb, and then sends the sensed signal to the control circuit through the detector. When the control circuit senses When there is no light coming out of the bulb, switch the supply circuit so that the auxiliary bulb of the standby light source is lit immediately. As mentioned above, no matter where the detector is placed, this conventional structure is an external control structure, which uses traditional logic circuits to complete the switching, uses many parts, and makes the overall circuit wiring easier. In addition, the photoelectric side detector is not easy to find the setting position, which makes it difficult to manufacture or inconvenient to use. As a result, some designs even switch the switch manually, which affects the operation more or less. will have an impact.

The main purpose of this utility model is to provide a multi-light source operating lamp circuit control device, which uses a microprocessor controller to perform pulse width modulation on the power supply of the lamp, and generates a signal at the output end of the channel element, and feeds back to the microprocessor at the same time , in order to adjust the light and shade of the operating light source and monitor the performance of the bulb.

The second purpose of this utility model is to provide a multi-light source operating light circuit control device, which can make the microprocessor detect that the main light circuit (or auxiliary light circuit) is in an open circuit state by means of the detection side of the path element, and immediately use the microprocessor to output A control signal uses the switch circuit as a switch to switch the power supply to the standby auxiliary lamp circuit, so that the auxiliary lamp automatically emits light.

Another object of the present invention is to provide a multi-light source surgical light circuit control device, which can realize the brightness control and switch of the surgical light source by manual control in addition to fulfilling the requirements of automatic switching of the light source and displaying the brightness of the light.

The purpose of this utility model is achieved in this way: a multi-light source operating lamp circuit control device, the circuit is composed of a power supply circuit, a switch circuit, a main lamp, an auxiliary lamp, etc., wherein the circuit also includes a group with a microprocessor The control loop, access element, and shaping element; the main lamp and the auxiliary lamp are connected in parallel between the switch loop and the access element, and the control loop is connected to the switch loop and the access element respectively, and a set of access elements is provided between the access element and the control loop. The feedback pulse wave is slightly shaped and then input to the signal shaping component of the microprocessor of the control loop; the microprocessor port line of the control loop is connected with a key loop, a display loop and an optical coupler.

The switch circuit is at least composed of a main switch, a main light switch and more than one group of auxiliary light switches, etc. These switches are controlled by an amplifier circuit composed of corresponding inductors and triodes respectively triggered by output signals of the microprocessor.

Therefore, compared with the conventional light brightness adjustment control method, the utility model has the resistance control type and the voltage control type, the volume of the power type variable resistance meter or the voltage switching switch required by the two known structures is very small. Large, it is necessary to make a large control box separate from the operating light and install it in the wall of the operating room before it can be used, so the cost of the conventional structure will be much higher, and it is difficult to install and operate; and the utility model The effective power of the lamp circuit is used to control the brightness adjustment and switch functions of the lamp, so it can achieve the requirements of small size, easy operation and low cost, and ensure that the lamp supply is completely uninterrupted during the operation.

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is the circuit block diagram of the present utility model;

Fig. 2 is the circuit diagram of the present utility model;

Fig. 3 is a partial circuit diagram of the control loop of the utility model.

The utility model is a multi-light source operating lamp circuit control device, as shown in Fig. A group of control loops 6 with a microprocessor 61 are formed; wherein: the main light 3 and the auxiliary light 4 are connected in parallel between the switch loop and the access element 5, and the control loop 6 is connected to the switch loop and the access element 5 respectively. connected, and between the access element 5 and the control loop 6, a signal shaping element 7 is provided, which can slightly shape the pulse wave fed back by the access element 5 and then input it into the microprocessor 61 of the control loop; the control loop 6 is included in the microprocessor The processor 61 is connected in parallel with a key circuit 62, a display circuit 63, an optocoupler 64, etc., and the microprocessor 61 in the control circuit 6 can output a group of signals to start the switch circuit 2 through the setting of the key circuit 62. each switch and perform pulse width modulation, and the microprocessor 61 can receive the pulse wave signal fed back by the access element 5 and the shaping element 7 for software judgment and analysis of the real-time filament condition, and display the real-time condition on the display circuit 63, or when the main lamp (or auxiliary lamp) is damaged, a signal will be output to switch the switch of switch circuit 2 to the auxiliary lamp circuit (or the second auxiliary lamp).

As mentioned above, the switch circuit is composed of at least one main switch 21, one main light switch 22, and more than one set of auxiliary light switches 23, etc., and these switches are triggered by the output signal of the microprocessor 61 to respectively trigger the circuit formed by the inductor and the triode. 24, 25, 26 and other drives.

According to the above, when the power enters the device through the power supply circuit 1, the key circuit 62 is used to set the main light to be turned on at first. At this time, the microprocessor 61 outputs two signals, one is the signal to turn on the main switch 21, and the other is the signal to turn on the main switch 21. Turn on the signal of the main light switch 22 to make the main light 3 emit light; at this moment, the pulse wave of the main light 3 will be fed back to the microprocessor 61 by the optical coupler 64 of the control circuit 3 through the passage element 5 for judgment and analysis, and the obtained information is displayed by the indicator light 631 on the display circuit 63; when the filament of the above-mentioned main lamp 3 is blown, the pulse wave signal fed back by the path element 5 will disappear, and the microprocessor 61 will output Another set of signals makes the main light switch 22 open circuit and simultaneously turns on the auxiliary light switch 23, and an indicator light 632 will light up in the display circuit 63, warning that the main light is damaged. In the same way, the utility model can also switch the power supply to the second auxiliary lamp when the auxiliary lamp 4 is damaged, and issue a warning signal to prevent the interruption of the light source during the operation.

The utility model uses the microprocessor 81 of the control circuit 8 to receive the adjustment notice from the button circuit 82 to adjust the current pulse width of the bulb when adjusting the light intensity, so as to adjust the brightness of the bulb; and see Fig. 2 and Fig. 3 As shown, the operating voltage of the microprocessor 31 is 5VDC (as shown in Figure 3), so it is necessary to use the intermediary of the pass element 5 and the optocoupler 64 to detect the change of each working cycle in the 24VDC light bulb circuit The pulse wave of the average effective power that light brightness produces; Utilize the real-time processing function and the characteristic of microprocessor 81 again, make the state at that time show the intensity of light in the display lamp lamp 831 on the display circuit 83.

As soon as the power supply fluctuation of the main lamp circuit disappears in the utility model, the microprocessor is used for immediate processing, and the secondary lamp circuit is activated to continue monitoring. When burning, the above-mentioned standby auxiliary lamp circuit is not limited to one but can have several. When switching from the main light circuit to the auxiliary light circuit, the display panel will light up to indicate that the main light circuit has been damaged. This display helps to remind the user of the condition of the light. If the auxiliary light circuit is also damaged, it will also be displayed on the display panel that the auxiliary light circuit has been damaged and a switch to another auxiliary light is performed unless there is no other normal spare auxiliary light available.

Claims (2)

1, a kind of multi-light source operating lamp circuit control device, its circuit is by power supply circuit, switch loop, king light, secondary lamp etc., and it is characterized in that: described circuit also comprises one group of control loop, passage elements, shaping element with microprocessor; King light and secondary lamp are parallel between switch loop and the passage elements, control loop is connected with switch loop and passage elements respectively again, and between passage elements and control loop, be provided with one with the pulse wave of passage elements feedback slightly shaping import the signal shaping element of control loop microprocessor again; Be connected to button loop, show circuit and an optical coupler on the microprocessor mouth line of control loop.

2, multi-light source operating lamp circuit control device according to claim 1, it is characterized in that: described switch loop has a master switch, a king light switch and the above formations such as secondary lamp switch of group at least, and these switches trigger corresponding inductance respectively by the microprocessor output signal and triode constitutes amplifying circuit control.