CN213788465U

CN213788465U - Electric isolation curtain control circuit for gynecological examination

Info

Publication number: CN213788465U
Application number: CN202021474516.7U
Authority: CN
Inventors: 黄思琦
Original assignee: Individual
Current assignee: Wu Donghua
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-07-27
Anticipated expiration: 2030-07-23

Abstract

The utility model relates to an electronic isolation curtain control circuit especially relates to an electronic isolation curtain control circuit is used in gynecological examination. The technical problem of the utility model is that: the electric isolating curtain control circuit for the gynecological examination is convenient to use and can automatically control the isolating curtain. The technical scheme of the utility model is that: an electric isolation curtain control circuit for gynecological examination comprises a battery power supply unit, an infrared remote control emitter circuit, a key group, an infrared emission tube, a first indicator light and the like; the key group and the first indicator light are connected with the input end of the infrared remote control transmitter circuit, and the output end of the infrared remote control transmitter circuit is connected with the infrared transmitting tube. The utility model can control the positive rotation and the reverse rotation of the direct current motor through the key group, automatically control the opening and the closing of the isolation curtain, and is convenient to use; through the effect of second pilot lamp group, can make things convenient for medical personnel to judge direct current motor's rotation direction.

Description

Electric isolation curtain control circuit for gynecological examination

Technical Field

The utility model relates to an electronic isolation curtain control circuit especially relates to an electronic isolation curtain control circuit is used in gynecological examination.

Background

The gynecology department is a professional department mainly for diagnosing and treating female gynecological diseases, when the gynecological diseases are treated, in order to accurately judge the illness state of the patient, special examination equipment is needed to be used for examining the patient, and as most of the gynecological diseases are related to reproductive organs and relate to the privacy of the patient, an isolation curtain is needed to block the patient.

When the patient needs to be checked, generally, medical staff pulls the isolation curtain by hands to close the isolation curtain and block the patient, after the patient is checked, the medical staff pulls the isolation curtain by hands to open the isolation curtain, and the medical staff needs to manually operate every time, so that the operation is troublesome.

An electric isolation curtain control circuit for gynecological examination is designed, which can automatically control an isolation curtain and is convenient to use, so that the problems existing at present are solved.

SUMMERY OF THE UTILITY MODEL

In order to overcome and all to need medical personnel manual to open and close the isolation curtain at every turn, relatively more troublesome shortcoming like this, the utility model discloses a technical problem is: the electric isolating curtain control circuit for the gynecological examination is convenient to use and can automatically control the isolating curtain.

The technical scheme of the utility model is that: the utility model provides an electronic isolation curtain control circuit for gynecological examination, is including battery power supply unit, infrared remote control transmitter circuit, press key group, infrared transmitting tube, first pilot lamp, infrared receiving head, infrared receiving integrated circuit, motor drive circuit and DC motor, press key group and first pilot lamp all to be connected with infrared remote control transmitter circuit's input, infrared remote control transmitter circuit's output and infrared transmitting tube are connected, infrared receiving head is connected with infrared receiving integrated circuit's input, infrared receiving integrated circuit's output and motor drive circuit's input are connected, motor drive circuit's output and DC motor are connected, battery power supply unit is infrared remote control transmitter circuit, presses key group, infrared transmitting tube, first pilot lamp, infrared receiving head, infrared receiving integrated circuit, The motor driving circuit and the direct current motor supply power.

As a further preferable scheme, the motor driving circuit further comprises a second indicator light group, the output end of the motor driving circuit is connected with the second indicator light group, and the battery power supply unit supplies power to the second indicator light group.

As a further preferred solution, the infrared remote control transmitter circuit comprises BA5104, tact switches SW1-SW2, a transistor Q1, an infrared emitter IR1, resistors R1-R3, a diode D1, a light emitting diode VD1, capacitors C2-C3 and XT1, wherein the 8-pin of the BA5104 is grounded, the 5-pin of the BA5104 is connected with the tact switch SW1, the other end of the tact switch SW1 is grounded, the 7-pin of the BA5104 is connected with the tact switch SW2, the other end of the tact switch SW2 is grounded, the 15-pin of the BA5104 is connected in series with a resistor R2 and the base of a transistor Q1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected in series with a resistor R1, an infrared emitter IR1 and a diode D1, the cathode of the diode D1 is connected with the 16-pin of the BA5104, the 12-pin of the BA 4 is connected in parallel with the other end of the capacitor XT 51013, the capacitor C1 and the other end of the capacitor C1, the 12 feet of the BA5104 are connected with a capacitor C3, the other end of the capacitor C3 is grounded, the 14 feet of the BA5104 are connected with a resistor R3 and a light-emitting diode VD1 in series, and the cathode of the light-emitting diode VD1 is grounded.

As a further preferable scheme, the battery power supply unit comprises BT1 and an electrolytic capacitor EC1, one end of the BT1 and one end of the electrolytic capacitor EC1 are both connected with the series connection middle point of the infrared emission head IR1 and the diode D1, and the other end of the BT1 and the other end of the electrolytic capacitor EC1 are both grounded.

As a further preferable scheme, the infrared receiving integrated circuit comprises BA5204, a three-terminal regulator 7805, an infrared receiving head, a diode D1, electrolytic capacitors EC2-EC3, resistors R4-R6 and capacitors C5-C6, wherein pin 1 of the BA5204 is grounded, pin 2 of the three-terminal regulator 7805 is grounded, pin 3 of the three-terminal regulator 7805 is connected with +5V, pin 2 of the three-terminal regulator 7805 is connected with its pin 3 in parallel with a capacitor C5 and an electrolytic capacitor EC2, pin 1 of the three-terminal regulator 7805 is connected with its pin 2 in parallel with an electrolytic capacitor EC3 and a capacitor C6, pin 1 of the three-terminal regulator 7805 is connected with the diode D2 and the resistor R4 in series, the other end of the resistor R4 is connected with +12V, pin 3 of the infrared receiving head is connected with +5V, pin 2 of the infrared receiving head is grounded, pin 1 of the infrared receiving head is connected with the resistor R5 and the triode Q2 in series, and the emitter of the transistor Q2 is grounded, the collector of the triode Q2 is connected with a resistor R6, the other end of the resistor R6 is connected with +5V, and the collector of the triode Q2 is connected with the 14 pins of the BA 5204.

As a further preferred solution, the motor driving circuit includes a TDA2822M, leds VD2-VD3, a capacitor C4, resistors R7-R12 and diodes D3-D3, wherein 2 pins of the TDA2822 3 are connected to +12V, 4 pins of the TDA2822 3 are grounded, 6 pins of the TDA2822 3 are connected to 8 pins thereof, 5 pins of the TDA2822 3 are connected to 7 pins thereof, 1 pin of the TDA2822 3 is connected to the capacitor C3 in parallel with 3 pins thereof, 5 pins of the TDA 22 3 are connected to the diode D3, an anode of the diode D3 is connected to 5 pins of the BA5204, 6 pins of the TDA 283672 are connected to the diode D3, an anode of the diode D3 is connected to 7 pins of the BA 4, the resistor R3 is connected in series with the resistor R283672, the other end of the diode R3 is connected to the intermediate resistor D52072, the resistor R3 is connected to the resistor R3 in series with the resistor R3, the resistor R3 and the resistor R3, the resistor R3 in series is connected to the resistor R3 in series with the intermediate resistor 3, the resistor 3 and the resistor 3 in series, the resistor R3, the resistor 3 and the resistor series 3 in series 3 and the resistor series 3, the other end of resistance R9 is connected with diode D2 and resistance R4's series intermediate point, resistance R10's other end ground connection, TDA28 2822M's 6 feet and resistance R9 and resistance R10's series intermediate point are connected, TDA28 2822M's 1 foot is established ties emitting diode VD2 and resistance R11, the other end and the 3 feet of TDA2822M of resistance R11 are connected, TDA28 2822M's 1 foot is established ties emitting diode VD3 and resistance R12, the other end and the 3 feet of TDA2822M of resistance R12 are connected.

As a further preferable scheme, the infrared transmitting tube can directly convert electric energy into near infrared light and can transmit the near infrared light, the infrared receiving head internally comprises an infrared monitoring diode, an amplifier, a limiter, a band-pass filter, an integrating circuit and a comparator, the distance between the infrared transmitting tube and the infrared receiving head is far and near, an alternating current signal enters the band-pass filter, the band-pass filter can pass through 30khz to 60khz subcarriers and enters the comparator through a demodulation circuit and the integrating circuit, and the comparator outputs high and low levels to restore the signal waveform of the infrared transmitting tube.

Has the advantages that:

1. the forward rotation and the reverse rotation of the direct current motor can be controlled through the key group, the isolation curtain is automatically controlled to be opened and closed, and the use is convenient.

2. Through the effect of second pilot lamp group, can make things convenient for medical personnel to judge direct current motor's rotation direction.

Drawings

Fig. 1 is a circuit block diagram of the present invention.

Fig. 2 is a schematic circuit diagram of the present invention.

Part names and serial numbers in the figure: the system comprises a battery power supply unit 1, an infrared remote control emitter circuit 2, a key set 3, an infrared emission tube 4, a first indicator lamp 5, an infrared receiving head 6, an infrared receiving integrated circuit 7, a motor driving circuit 8, a direct current motor 9 and a second indicator lamp set 10.

Detailed Description

Although the present invention may be described with respect to particular applications or industries, those skilled in the art will recognize the broader applicability of the invention. Those of ordinary skill in the art will recognize other factors such as: terms such as above, below, upward, downward, and the like are used to describe the accompanying drawings and are not meant to limit the scope of the invention as defined by the appended claims. Such as: any numerical designation of first or second, and the like, is merely exemplary, and is not intended to limit the scope of the invention in any way.

Example 1

The utility model provides an electronic isolation curtain control circuit for gynecologial examination, refer to as shown in figure 1, including battery power supply unit 1, infrared remote control transmitter circuit 2, press key group 3, infrared transmitting tube 4, first pilot lamp 5, infrared receiving head 6, infrared receiving integrated circuit 7, motor drive circuit 8 and DC motor 9, press key group 3 and first pilot lamp 5 to all be connected with infrared remote control transmitter circuit 2's input, infrared remote control transmitter circuit 2's output is connected with infrared transmitting tube 4, infrared receiving head 6 is connected with infrared receiving integrated circuit 7's input, infrared receiving integrated circuit 7's output is connected with motor drive circuit 8's input, motor drive circuit 8's output is connected with DC motor 9, battery power supply unit 1 is infrared remote control transmitter circuit 2, The key group 3, the infrared transmitting tube 4, the first indicator lamp 5, the infrared receiving head 6, the infrared receiving integrated circuit 7, the motor driving circuit 8 and the direct current motor 9.

After gynaecology's inspection is with electronic isolation curtain control circuit power-on, first pilot lamp 5 lights, medical personnel press one of them switch on the keypad 3, infrared remote control emitter circuit 2 control infrared transmitting tube 4 signals, infrared receiving head 6 receives the signal, infrared receiving head 6 is with signal input to infrared receiving integrated circuit 7, infrared receiving integrated circuit 7 passes through 8 control direct current motor of motor drive circuit 9 works, direct current motor 9 corotation, will keep apart the curtain and close, after keeping apart the curtain and closing, direct current motor 9 stop work. When needing to keep apart the curtain and opening, medical personnel press another switch on the key group 3, infrared remote control transmitter circuit 2 control infrared transmitting tube 4 signals, infrared receiving head 6 receives the signal, infrared receiving head 6 is with signal input to infrared receiving integrated circuit 7, infrared receiving integrated circuit 7 passes through 8 control direct current motor of motor drive circuit 9 works, direct current motor 9 reversal, it opens to keep apart the curtain, after keeping apart the curtain and opening, direct current motor 9 stop work, through the corotation and the reversal of 3 control direct current motor 9 of key group, automatic control keeps apart opening and closing of curtain, high durability and convenient use. After the gynecological examination is powered off by the electric isolating curtain control circuit, the first indicator lamp 5 is turned off.

Example 2

On the basis of the embodiment 1, referring to fig. 1, a second indicator light group 10 is further included, an output end of the motor driving circuit 8 is connected with the second indicator light group 10, and the battery power supply unit 1 supplies power to the second indicator light group 10.

When the direct current motor 9 rotates forwards, one of the indicator lamps on the second indicator lamp group 10 is turned on, and when the direct current motor 9 rotates backwards, the other indicator lamp on the second indicator lamp group 10 is turned on, so that the medical staff can conveniently judge the rotation direction of the direct current motor 9.

Example 3

An electric isolating curtain control circuit for gynecological examination is disclosed, as shown in fig. 2, the infrared remote control transmitter circuit 2 comprises a BA5104, a tact switch SW1-SW2, a transistor Q1, an infrared transmitting head IR1, resistors R1-R3, a diode D1, a light emitting diode VD1, capacitors C2-C3 and XT1, wherein 8 feet of the BA5104 are grounded, 5 feet of the BA5104 are connected with the tact switch SW1, the other end of the tact switch SW1 is grounded, 7 feet of the BA5104 are connected with the tact switch SW2, the other end of the tact switch SW 42 is grounded, a 15 feet of the BA5104 are connected with a resistor R2 and a base of a transistor Q9 in series, an emitter of the transistor Q1 is grounded, a collector of the transistor Q1 is connected with a resistor R1, an infrared transmitting head IR1 and a diode D1, a cathode 68616 foot of the diode D1 is connected with a cathode of the BA 16, a cathode XT 5104 is connected with a pin 3613C 3613 and a capacitor BA 51013, the other end of the capacitor C2 is grounded, the 12 feet of the BA5104 are connected with the capacitor C3, the other end of the capacitor C3 is grounded, the 14 feet of the BA5104 are connected with a resistor R3 and a light-emitting diode VD1 in series, and the cathode of the light-emitting diode VD1 is grounded.

The battery power supply unit 1 comprises a BT1 and an electrolytic capacitor EC1, one end of the BT1 and one end of the electrolytic capacitor EC1 are both connected with the middle point of the series connection of the infrared emission head IR1 and the diode D1, and the other ends of the BT1 and the electrolytic capacitor EC1 are both grounded.

The infrared receiving integrated circuit 7 comprises a BA5204, a three-terminal voltage regulator 7805, an infrared receiving tube (head), a diode D1, electrolytic capacitors EC2-EC3, resistors R4-R6 and capacitors C5-C6, wherein a pin 1 of the BA5204 is grounded, a pin 2 of the three-terminal voltage regulator 7805 is grounded, a pin 3 of the three-terminal voltage regulator 7805 is connected with +5V, a pin 2 of the three-terminal voltage regulator 7805 is connected with the capacitor C5 and the electrolytic capacitor EC2 in parallel, a pin 1 of the three-terminal voltage regulator 7805 is connected with a pin 2 of the three-terminal voltage regulator EC3 and the capacitor C6 in parallel, a pin 1 of the three-terminal voltage regulator 7805 is connected with the diode D2 and the resistor R4 in series, the other end of the resistor R4 is connected with +12V, a pin 3 of the infrared receiving head 6 is connected with +5V, a pin 2 of the infrared receiving head 6 is grounded, a pin 1 of the infrared receiving head 6 is connected with the resistor R5 and the triode 2 in series, and an emitter of the triode Q2 is grounded, the collector of the triode Q2 is connected with a resistor R6, the other end of the resistor R6 is connected with +5V, and the collector of the triode Q2 is connected with the 14 pins of the BA 5204.

The motor driving circuit 8 comprises a TDA2822, a light emitting diode VD-VD, a capacitor C, a resistor R-R and a diode D-D, 2 feet of the TDA2822 are connected with +12V, 4 feet of the TDA2822 are grounded, 6 feet of the TDA2822 are connected with 8 feet of the TDA2822, 5 feet of the TDA2822 are connected with 7 feet of the TDA2822, 1 foot of the TDA2822 is connected with 3 feet of the TDA2822 in parallel with the capacitor C, 5 feet of the TDA2822 are connected with a diode D, the anode of the diode D is connected with 5 feet of a BA5204, the anode of the TDA2822 is connected with 7 feet of the BA5204, the resistor R is connected with a resistor R in series, the other end of the resistor R is connected with a series intermediate point of the diode D and the resistor R, the other end of the TDA2822 is connected with a series intermediate point of the diode D and the resistor R, the other end ground connection of resistance R10, TDA28 2822M's 6 feet and resistance R9 and resistance R10's series intermediate point are connected, TDA28 2822M's 1 foot is established ties emitting diode VD2 and resistance R11, the other end of resistance R11 is connected with TDA28 2822M's 3 feet, TDA28 2822M's 1 foot is established ties emitting diode VD3 and resistance R12, the other end of resistance R12 is connected with TDA28 2822M's 3 feet.

The infrared transmitting tube 4 can directly convert electric energy into near infrared light, and can emit the light-emitting device out, the infrared receiving head 6 is internally provided with an infrared monitoring diode, an amplifier, an amplitude limiter, a band-pass filter, an integrating circuit and a comparator, the distance between the infrared transmitting tube 4 and the infrared receiving head 6 is far and near, an alternating current signal enters the band-pass filter, the band-pass filter can pass through 30khz to 60khz subcarriers and enters the comparator through a demodulation circuit and the integrating circuit, and the comparator outputs high and low levels to restore the signal waveform of the infrared transmitting tube 4.

After the control circuit of the electric isolation curtain for gynecological examination is powered on, the light-emitting diode VD1 lights, a medical staff presses the tact switch SW1, the infrared emitting head IR1 emits signals, the infrared receiving head 6 receives the signals, the infrared receiving head 6 inputs the signals into the BA5204, the voltages of the 5 feet and the 7 feet of the BA5204 are higher than the voltages of the 46 feet and the 8 feet of the BA52046, the 1 foot of the BA5204 outputs high level, the 3 foot of the BA5204 outputs low level, the direct current motor 9 rotates forwards to close the isolation curtain, the light-emitting diode VD2 lights, the light-emitting diode VD3 extinguishes, after the isolation curtain is closed, the direct current motor 9 stops working, and the light-emitting diode VD2 extinguishes. When the isolation curtain needs to be opened, a medical worker presses the tact switch SW2, the infrared transmitting head IR1 transmits signals, the infrared receiving head 6 receives the signals, the infrared receiving head 6 inputs the signals into the BA5204, the voltage of the 5 feet and the 7 feet of the BA5204 is lower than the voltage of the 5 feet and the 8 feet of the BA52046, the 1 foot of the BA5204 outputs a low level, the 3 feet of the BA5204 outputs a high level, the direct current motor 9 rotates reversely to open the isolation curtain, the light emitting diode VD3 lights up, the light emitting diode VD2 lights out, after the isolation curtain is opened, the direct current motor 9 stops working, and the light emitting diode VD3 lights out. After the power of the control circuit of the electric isolating curtain for gynecological examination is cut off, the light-emitting diode VD1 is extinguished.

The above-described embodiments are provided to enable persons skilled in the art to make or use the invention, and many modifications and variations may be made to the above-described embodiments by persons skilled in the art without departing from the inventive concept of the present invention, so that the scope of the invention is not limited by the above-described embodiments, but should be accorded the widest scope consistent with the innovative features set forth in the claims.

Claims

1. The utility model provides a gynaecology's inspection is with electronic isolation curtain control circuit, characterized by: including battery power supply unit (1), infrared remote control transmitter circuit (2), press key group (3), infrared transmitting tube (4), first pilot lamp (5), infrared receiving head (6), infrared receiving integrated circuit (7), motor drive circuit (8) and direct current motor (9), press key group (3) and first pilot lamp (5) and all be connected with the input of infrared remote control transmitter circuit (2), the output and infrared transmitting tube (4) of infrared remote control transmitter circuit (2) are connected, infrared receiving head (6) are connected with the input of infrared receiving integrated circuit (7), the output and the input of motor drive circuit (8) of infrared receiving integrated circuit (7) are connected, the output and direct current motor (9) of motor drive circuit (8) are connected, battery power supply unit (1) is infrared remote control transmitter circuit (2), The key set (3), the infrared transmitting tube (4), the first indicator lamp (5), the infrared receiving head (6), the infrared receiving integrated circuit (7), the motor driving circuit (8) and the direct current motor (9) are powered.

2. The electric isolating curtain control circuit for gynecological examination as claimed in claim 1, wherein: the motor driving circuit further comprises a second indicator lamp group (10), the output end of the motor driving circuit (8) is connected with the second indicator lamp group (10), and the battery power supply unit (1) supplies power to the second indicator lamp group (10).

3. The electric isolating curtain control circuit for gynecological examination as claimed in claim 2, wherein: the infrared remote control transmitter circuit (2) comprises a BA5104, light touch switches SW1-SW2, a triode Q1, an infrared emission head IR1, resistors R1-R3, a diode D1, a light emitting diode VD1, capacitors C2-C3 and XT1, wherein an 8 pin of the BA5104 is grounded, a5 pin of the BA5104 is connected with the light touch switch SW1, the other end of the light touch switch SW1 is grounded, a 7 pin of the BA5104 is connected with the light touch switch SW2, the other end of the light touch switch SW2 is grounded, a 15 pin of the BA5104 is connected with a resistor R2 and a base electrode of a triode Q1, an emitter of the triode Q1 is grounded, a collector of the triode Q1 is connected with a resistor R1, an infrared emission head IR1 and a diode D1, a cathode of the diode D1 is connected with a 16 pin of the BA5104, a 12 pin of the BA 4 is connected with an XT 13 pin of the BA5104 in parallel, the other end of the capacitor BA5104 is connected with a capacitor C1, the capacitor C1 and the other end of the capacitor C1 is connected with, the other end of the capacitor C3 is grounded, the 14-pin of the BA5104 is connected with a resistor R3 and a light-emitting diode VD1 in series, and the cathode of the light-emitting diode VD1 is grounded.

4. The electric isolating curtain control circuit for gynecological examination as claimed in claim 3, wherein: the battery power supply unit (1) comprises BT1 and an electrolytic capacitor EC1, one end of the BT1 and one end of the electrolytic capacitor EC1 are both connected with the series connection middle point of an infrared emission head IR1 and a diode D1, and the other ends of the BT1 and the electrolytic capacitor EC1 are both grounded.

5. The electric isolating curtain control circuit for gynecological examination as claimed in claim 4, wherein: the infrared receiving integrated circuit (7) comprises a BA5204, a three-terminal regulator 7805, an infrared receiving head (6), a diode D1, electrolytic capacitors EC2-EC3, resistors R4-R6 and capacitors C5-C6, wherein a pin 1 of the BA5204 is grounded, a pin 2 of the three-terminal regulator 7805 is grounded, a pin 3 of the three-terminal regulator 7805 is connected with +5V, a pin 2 of the three-terminal regulator 7805 is connected with a pin 3 thereof in parallel with a capacitor C5 and an electrolytic capacitor EC2, a pin 1 of the three-terminal regulator 7805 is connected with a pin 2 thereof in parallel with an electrolytic capacitor EC3 and a capacitor C6, a pin 1 of the three-terminal regulator 7805 is connected with the diode D2 and the resistor R4 in series, the other end of the resistor R4 is connected with +12V, a pin 3 of the infrared receiving head (6) is connected with +5V, a pin 2 of the infrared receiving head (6) is grounded, a pin 1 of the infrared receiving head (6) is connected with a triode R5 and a resistor Q2 in series, and an emitter of the triode Q2 are grounded, the collector of the triode Q2 is connected with a resistor R6, the other end of the resistor R6 is connected with +5V, and the collector of the triode Q2 is connected with the 14 pins of the BA 5204.

6. The electric isolating curtain control circuit for gynecological examination as claimed in claim 5, wherein: the motor driving circuit (8) comprises a TDA2822, a light emitting diode VD-VD, a capacitor C, a resistor R-R and a diode D-D, wherein 2 feet of the TDA2822 are connected with +12V, 4 feet of the TDA2822 are grounded, 6 feet of the TDA2822 are connected with 8 feet of the TDA2822, 5 feet of the TDA2822 are connected with 7 feet of the TDA2822, 1 foot of the TDA2822 is connected with 3 feet of the TDA2822 in parallel with the capacitor C, 5 feet of the TDA2822 are connected with a diode D, the anode of the diode D is connected with 5 feet of a BA5204, the resistor R is connected with a resistor R in series, the other end of the resistor R is connected with the series middle point of the diode D and the resistor R, the other end of the resistor R is grounded, 5 feet of the TDA2822 is connected with the series middle point of the resistor R and the resistor R, the other end of the resistor R in series with the diode D and the middle point of the resistor R, the other end ground connection of resistance R10, TDA28 2822M's 6 feet and resistance R9 and resistance R10's series intermediate point are connected, TDA28 2822M's 1 foot is established ties emitting diode VD2 and resistance R11, the other end of resistance R11 is connected with TDA28 2822M's 3 feet, TDA28 2822M's 1 foot is established ties emitting diode VD3 and resistance R12, the other end of resistance R12 is connected with TDA28 2822M's 3 feet.

7. The electric isolating curtain control circuit for gynecological examination as claimed in claim 6, wherein: the infrared transmitting tube (4) can directly convert electric energy into near infrared light and can transmit the near infrared light to a light-emitting device, the infrared receiving head (6) comprises an infrared monitoring diode, an amplifier, a limiter, a band-pass filter, an integrating circuit and a comparator, the infrared transmitting tube (4) and the infrared receiving head (6) are far away from each other, an alternating current signal enters the band-pass filter, the band-pass filter can enter the comparator through 30khz to 60khz subcarriers and a demodulation circuit and the integrating circuit, and the comparator outputs high and low levels to restore the signal waveform of the infrared transmitting tube (4).