阅读说明：本技术 一种用于居民小区夜间智能照明控制电路及其控制方法 (Night intelligent illumination control circuit for residential quarter and control method thereof ) 是由 汪菊龙 于 2020-06-15 设计创作，主要内容包括：本发明涉及夜间智能照明领域,公开了一种用于居民小区夜间智能照明控制电路及其控制方法,包括：信号控制单元、信号检测单元、电压比较单元、以及电子开关单元；其中信号控制单元包括：放大电路、脉冲电路、整形电路、延时开启电路、以及双稳态电路；本发明主要原理就是利用光控部件控制电路白天不工作,而夜晚则由声控部件控制其工作,再由延时部件控制其工作时间；在白天由光敏电阻RG控制电路,无论外界有无声音发出电路都不会工作,而到了夜晚光控部件就不再起作用,而由声音传感器BM进行检测控制电路,只要在一定范围内有声音发出且达到一定响度,电路就会导通工作,又由延时开启电路控制其工作时间；从而可以有效的进行电能的节省。(The invention relates to the field of intelligent night illumination, and discloses a night intelligent illumination control circuit and a night intelligent illumination control method for residential communities, which comprises the following steps: the device comprises a signal control unit, a signal detection unit, a voltage comparison unit and an electronic switch unit; wherein the signal control unit includes: the circuit comprises an amplifying circuit, a pulse circuit, a shaping circuit, a delay starting circuit and a bistable circuit; the main principle of the invention is that the light control component is utilized to control the circuit not to work in the daytime, the sound control component controls the circuit to work at night, and the time delay component controls the circuit to work; in the daytime, the photoresistor RG control circuit cannot work no matter whether a sound emitting circuit exists outside or not, and the light control component does not work at night, the sound sensor BM detects the control circuit, and as long as sound is emitted in a certain range and reaches a certain loudness, the circuit is conducted to work, and the working time of the circuit is controlled by the delay starting circuit; thereby effectively saving electric energy.)

1. A night intelligent lighting control circuit for residential communities, comprising:

the signal control unit is used for detecting an external environment so as to intelligently control illumination according to the external environment, the photoresistor and the sound sensor are used for detecting, and meanwhile, the sound control is started according to the intensity of external light, so that the energy-saving power supply can be effectively used;

the signal detection unit detects external conditions by using the photoresistor and the sound sensor and simultaneously transmits signals;

the voltage comparison unit is used for performing voltage comparison on the input control signal, so that the output voltage can be effectively protected, and a circuit and a load are protected;

the electronic switch unit is used for switching on or off signals and switching between the signals, the electronic switch can improve the signal switching speed, and meanwhile, the power consumption is low, so that seamless signal conversion can be realized, and the working efficiency is improved.

2. The night intelligent lighting control circuit for residential cells according to claim 1, wherein said signal control unit comprises: the circuit comprises an amplifying circuit, a pulse circuit, a shaping circuit, a delay starting circuit and a bistable circuit; wherein the amplifying circuit comprises: the circuit comprises a capacitor C7, a resistor R10, a resistor R11 and a triode Q4; the base of the triode Q4 is connected to one end of the capacitor C7 and one end of the resistor R10 at the same time, the collector of the triode Q4 is connected to one end of the resistor R11, the other end of the capacitor C7 is connected to the emitter of the triode Q4 for inputting signals, and the other end of the resistor R10 is connected to the other end of the resistor R11 for inputting working voltage;

the pulse circuit includes: the circuit comprises a triode Q3, a diode D6, a capacitor C8, a capacitor C9 and a resistor R12; the season of the triode Q3 is simultaneously connected with the anode of the diode D6 and one end of the capacitor C8, the collector of the triode Q3 is connected with one end of the resistor R12, the emitter of the triode Q3 is connected with the cathode of the diode D6, one end of the capacitor C9 is simultaneously connected with the emitter of the triode Q4 and the other end of the resistor R12, and the cathode of the diode D6 is connected with the other end of the resistor R11;

the shaping circuit includes: the dual-D trigger U2A, a resistor R14, a resistor R12, a diode D7 and a capacitor C10; pin No. 5 of the dual D flip-flop U2A is connected to the cathode of the diode D6, pin No. 3 of the dual D flip-flop U2A is connected to one end of the resistor R14 and the other end of the capacitor C9 at the same time, pin No. 4 of the dual D flip-flop U2A is connected to one end of the resistor R13, the anode of the diode D7 and one end of the capacitor C10 at the same time, pin No. 1 of the dual D flip-flop U2A is connected to the other end of the resistor R13 and the cathode of the diode D7 at the same time, and the other end of the capacitor C10 is connected to the other end of the resistor R12;

the delay turn-on circuit includes: the circuit comprises a triode Q5, a diode D8, a resistor R16, a resistor R15 and a capacitor C11; the base of the triode Q5 is connected with one end of the resistor R15, the other end of the resistor R15 is simultaneously connected with the cathode of the diode D8, one end of the resistor R16 and one end of the capacitor C11, the other end of the capacitor C11 is simultaneously connected with the other end of the capacitor C10 and the emitter of the triode Q5, and the anode of the diode D8 is simultaneously connected with the other end of the resistor R16 and the pin No. 2 of the dual-D flip-flop U2A;

the bistable circuits each include: the dual-D trigger U2B, a resistor R17, a resistor R18, a capacitor C12 and a thyristor U3; the pin 11 of the dual-D flip-flop U2B is connected to the collector of the transistor Q5 and the other end of the resistor R14, the pin 8 of the dual-D flip-flop U2B is connected to the pin 6 of the dual-D flip-flop U2A and is connected to a common terminal, the pin 9 of the dual-D flip-flop U2B is connected to one end of the resistor R12 and one end of the capacitor C12, the pin 12 of the dual-D flip-flop U2B is connected to the other end of the resistor R17, the pin 13 of the dual-D flip-flop U2B is connected to one end of the resistor R18, the pin 10 of the dual-D flip-flop U2B is connected to the common terminal, the other end of the resistor R18 is connected to the input end of the thyristor U3, one end of the thyristor U3 outputs, and the other end of the thyristor U3 is connected to and outputs the other end of the capacitor C12.

3. The night intelligent lighting control circuit for residential quarter as claimed in claim 1, wherein said signal detection unit comprises: a switch SW1, an indicator light EL, a rectifier bridge BR1, a relay KM1, a thyristor U1, a resistor R1, a diode D1, a diode D2, a capacitor C1, a capacitor C2, a resistor R2, a capacitor C3, a diode D3, a transistor Q1, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a thermistor RG, a capacitor C4, a diode D4, a capacitor C5, a zener diode D5, a capacitor C6, a resistor R8, a transistor Q2, a resistor R7, a resistor R9, and a sound detector BM; wherein an input end of the rectifier bridge BR1 is connected to one end of the switch SW1 and one end of the indicator light EL for inputting voltage, the other end of the switch SW1 is connected to the other end of the indicator light EL, an input end of the rectifier bridge BR1 is connected to one end of the resistor R1, one end of the thyristor U1 and one end of the relay KM1 at the same time, the other end of the thyristor U1 is connected to the other end of the relay KM1, the other end of the resistor R2 is connected to one end of the thyristor U1 and one end of the capacitor C2 at the same time, the other end of the resistor R1 is connected to an anode of the diode D1, a cathode of the diode D1 is connected to a cathode of the diode D2 and one end of the capacitor C1 at the same time, the other end of the capacitor C1 is connected to an anode of the diode D2 and the other end of the relay KM1 and the other end of the capacitor C67 2 at the same time, one end of the capacitor C3 is connected to the other end of the resistor R2 and the negative electrode of the diode D3, the collector of the transistor Q1 is connected to the positive electrode of the diode D3, the emitter of the transistor Q1 is connected to the other end of the capacitor C1 and one end of the resistor R3, the base of the transistor Q1 is connected to the other end of the resistor R3, one end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is connected to one end of the thermistor RG and one end of the resistor R6, the negative electrode of the diode D4 is connected to the other end of the resistor R6 and one end of the capacitor C4, one end of the capacitor C5 is connected to the positive electrode of the diode D4 and the negative electrode of the zener diode D5, the collector of the transistor Q2 is connected to the other end of the capacitor C5, the collector of the capacitor C5 and the other end of the capacitor C5, One end of the resistor R7, one end of the resistor R8 and one end of the resistor R9 are connected, the other end of the resistor R3 and the other end of the resistor R8 are connected, the base of the transistor Q2 is connected to the other end of the resistor R7 and one end of the capacitor C6, the other end of the capacitor C6 is connected to the other end of the resistor R9 and one end of the sound detector BM, the emitter of the transistor Q2 is connected to the other end of the sound detector BM and the anode of the zener diode D5, the other end of the capacitor C4 is connected to the anode of the zener diode D5 and the other end of the thermistor RG, and the other end of the resistor R4 is connected to the other end of the thermistor RG and the other end of the capacitor C3.

4. The night intelligent lighting control circuit for residential cells according to claim 1, wherein said voltage comparison unit comprises: the circuit comprises a comparator U4A, a triode Q6, a resistor R20, an adjustable resistor RV1 and a resistor R19; the No. 7 pin of the comparator U4A inputs a signal, the No. 6 pin of the comparator U4A is connected with one end and a control end of the adjustable resistor RV1, one end of the resistor R19 is connected with a collector of the triode Q6, a collector of the triode Q6 is connected with the other end of the resistor R19, the No. 3 pin of the comparator U4A and one end of the resistor R20 and inputs a voltage, the No. 1 pin of the comparator U4A is connected with a base of the triode Q6 and the other end of the resistor R20 and outputs a voltage, and the No. 12 pin of the comparator U4A is connected with the other end of the adjustable electronic RV and connected with a common end.

5. The night intelligent lighting control circuit for residential quarter as claimed in claim 1, wherein said electronic switch unit comprises: the circuit comprises an analog switch U5A, an analog switch U5B, an analog switch U5C, an analog switch U5D, a resistor R21, a resistor R22, a resistor R23, a resistor R24, a resistor R25, a bidirectional thyristor U7, a photoelectric coupler U6, a capacitor C13 and a capacitor C14; wherein, the pin No. 2 of the analog switch U5A inputs a signal, the pin No. 10 of the analog switch U5B is connected to the pin No. 2 of the analog switch U5A, the pin No. 3 of the analog switch U5C and one end of the capacitor C14 at the same time and inputs a voltage, the other end of the capacitor C14 is connected to a common terminal, the pin No. 1 of the analog switch U5A is connected to the pin No. 11 of the analog switch U5B and the pin No. 4 of the analog switch U5C, the pin No. 13 of the analog switch U5A is connected to the pin No. 9 of the analog switch U5D and inputs a signal, the pin No. 12 of the analog switch U5B is connected to the pin No. 13 of the analog switch U5A, one end of the capacitor C13 and one end of the resistor R22, the pin No. 5 of the analog switch U5C is connected to one end of the resistor R356 and one end of the resistor R35 23, and one end of the resistor D is connected to the pin No. D, the No. 8 pin of the analog switch U5D is connected with the other end of the resistor R21 and the other end of the capacitor C13 and is connected with a common end, the No. 1 pin of the photoelectric coupler U6 is connected with the other end of the resistor R23, the No. 2 pin of the photoelectric coupler U6 is connected with the other end of the resistor R22 and the other end of the capacitor C13, the No. 6 pin of the photoelectric coupler U6 is connected with one end of the resistor R25, the No. 4 pin of the photoelectric coupler U6 is connected with one end of the resistor R24 and the side end of the triac U7, one end of the triac U7 is connected with the other end of the resistor R24, and the other end of the triac U7 is connected with the other end of the resistor R25 and outputs.

6. The night intelligent lighting control circuit for the residential quarter as claimed in claim 5, wherein the type of the triac U7 is MOC3021, and the types of the analog switch U5A, the analog switch U5B, the analog switch U5C and the analog switch U5D are 74HCT 4066; comparator U4A is model LM 399; the dual D flip-flop U2B and the dual D flip-flop U2A are both model numbers 4013.

7. A control method for a night intelligent illumination control circuit of a residential area as claimed in claim 2, wherein the detection signal is amplified by an amplifying circuit, so as to output a pulse by a pulse circuit, so as to adjust the width of the pulse signal by a shaping circuit, and the bistable circuit is matched with the delay turn-on circuit to effectively control the on and off of the illumination; the method comprises the following specific steps:

s1, signal input, wherein a triode Q4 is matched with a resistor R10 and a resistor R11 to form a signal amplifying circuit, wherein the resistor R10 is a base electrode bias resistor of the triode Q4, the resistor R11 is a collector electrode bias resistor of the triode Q4, when a signal is input, the triode Q4 is in an amplifying state, at the moment, a capacitor C7 is used for signal coupling, and an emitter electrode of the triode Q4 is used for amplifying and outputting;

s2, a pulse signal generating circuit is composed of a triode Q3, a diode D5, a capacitor C8, a capacitor C9 and a resistor R12, when the collector of the triode Q3 outputs a sound wave signal in a negative half cycle, the emitter of the triode Q3 is used for charging the capacitor C8, so that the triode Q3 is conducted, and the resistor R12 forms forward pulse voltage; when the collector of the triode Q3 outputs a sound wave signal in a positive half cycle, the positive charge output by the capacitor C8 is quickly charged through the diode D5, so that the diode D5 causes the base of the triode Q3 to be conducted, and the capacitor C9 performs filtering of the resistor R12;

s3, pulse signals are input to a shaping circuit consisting of a double-D trigger U2A, a capacitor C10, a resistor R13, a resistor R14 and a diode D7 to stabilize the pulse signal width, at the moment, the double-D trigger U2A, the capacitor C10, the resistor R13 and the diode D7 form a monostable circuit, so that irregular pulse signals are shaped into pulses with consistent width, the pulse width of the pulses is determined by the resistor R13 and the capacitor C10, and meanwhile, a No. 2 pin of the double-D trigger U2A outputs signals;

s4, the double-D trigger U2B is matched with a resistor R17 and a capacitor C12 to form a bistable circuit, and a resistor R17 and a capacitor C12 form a delay circuit, so that the double-D trigger U2B is turned over for delay, and the phenomenon that the double-D trigger U2B is turned over for multiple times due to multiple sound wave pulses to cause inaccurate output state control is avoided; the high and low levels of the output of the thyristor are controlled by a resistor R18 to carry out output control on a thyristor U3;

s5, a delay starting circuit consists of a triode Q5, a diode D8, a capacitor C11, a resistor R16 and a resistor R15, when a pin No. 2 of a double-D trigger U2B outputs a high level, the high level is output to the capacitor C11 through the diode D8 for quick charging, so that the triode Q5 is enabled to be in saturated conduction, at the moment, the circuit is in a blocking state, and a sound wave pulse signal cannot be controlled; when the pin 2 of the dual D flip-flop U2B outputs a low level, the charge on the capacitor C11 discharges through the resistor R16 and the resistor R15, and after the discharge is completed, the transistor Q5 is turned off; therefore, the circuit is in a delayed opening state, and the sound wave pulse signal normally controls the bistable circuit to turn over.

8. The control method of the night intelligent lighting control circuit for the residential quarter as claimed in claim 7, wherein the values of the resistor R15 and the capacitor C11 are controlled in the time delay on circuit, and the time interval is controlled as follows: and the time constants of the resistor R15 and the capacitor C11 are much smaller than those of the resistor R13 and the capacitor C10.

9. The control method of the night intelligent illumination control circuit for the residential quarter as claimed in claim 7, wherein at night, when an external load is on, the transistor Q4 is in an amplification state, the transistor Q3 is in a cut-off state, the pin 1 of the dual D flip-flop U2A outputs a low level, but the pin 13 of the dual D flip-flop U2B outputs a high level, the thyristor U3 is in a conduction state, the pin 2 of the dual D flip-flop U2A outputs a high level, the transistor Q5 is in a saturation state, the pin 12 of the dual D flip-flop U2B outputs a low level signal, the delay is performed through the resistor R17, the capacitor C1 outputs the conduction on the diode D7, and the pin 9 of the dual D flip-flop U2B outputs a low level; when two pulse signals appear in the circuit, the state of the bistable circuit is turned over once, the No. 13 pin of the double-D trigger U2B outputs low level, the thyristor U3 loses trigger voltage, the pulsating direct current is turned off when passing zero, and the external load lamp is changed from bright to dark until being turned off; when no signal exists, the circuit enters a waiting state again, and the circuit can work again only when a pulse signal appears again; therefore, the anti-interference capability is improved, and intelligent control is realized.

Technical Field

The invention relates to the field of intelligent night lighting, and discloses a night intelligent lighting control circuit and a night intelligent lighting control method for residential communities.

Background

In recent years, the situation of energy shortage is increasingly prominent, and the actual situation is worried; energy conservation is a long-term strategic policy of China, and is a requirement for realizing scientific development and observation and realizing sustainable development of economy and society; therefore, the method can better save national non-renewable resources and is an important direction for people to develop for a long time.

Sound and light are the best known; nowadays, the design of the circuit controlled by sound or light is not necessary to be worried by people, because the sound sensor and the photoresistor can directly convert sound or light signals into electric signals, the circuit structure is greatly simplified, and the design of the sound and light control circuit is easier.

The outside night lighting lamp row in present district is all always bright, though can guarantee people's night trip safety like this, but also the use to the electric energy that improves greatly, and at night, most people are all having a rest, and the personnel of work are few, so effectual reduction is the use of electric energy, and intelligent control district night lighting is the problem that we need solve now.

Disclosure of Invention

The purpose of the invention is as follows: the utility model provides a night intelligent lighting control circuit and a control method thereof for residential quarter, which aims to solve the problems.

The technical scheme is as follows: a night intelligent lighting control circuit for residential communities, comprising:

the signal control unit is used for detecting an external environment so as to intelligently control illumination according to the external environment, the photoresistor and the sound sensor are used for detecting, and meanwhile, the sound control is started according to the intensity of external light, so that the energy-saving power supply can be effectively used;

the signal detection unit detects external conditions by using the photoresistor and the sound sensor and simultaneously transmits signals;

the voltage comparison unit is used for performing voltage comparison on the input control signal, so that the output voltage can be effectively protected, and a circuit and a load are protected;

the electronic switch unit is used for switching on or off signals and switching between the signals, and the electronic switch can improve the signal switching speed and has low power consumption, so that seamless signal conversion can be realized, and the working efficiency is improved;

wherein the signal control unit includes: the circuit comprises an amplifying circuit, a pulse circuit, a shaping circuit, a delay starting circuit and a bistable circuit.

Further preferably, the amplifying circuit includes: the circuit comprises a capacitor C7, a resistor R10, a resistor R11 and a triode Q4; the base of the triode Q4 is connected to one end of the capacitor C7 and one end of the resistor R10, the collector of the triode Q4 is connected to one end of the resistor R11, the other end of the capacitor C7 is connected to the emitter of the triode Q4 for inputting signals, and the other end of the resistor R10 is connected to the other end of the resistor R11 for inputting working voltage.

Further preferably, the pulse circuit includes: the circuit comprises a triode Q3, a diode D6, a capacitor C8, a capacitor C9 and a resistor R12; the season of the triode Q3 is connected with the anode of the diode D6 and one end of the capacitor C8, the collector of the triode Q3 is connected with one end of the resistor R12, the emitter of the triode Q3 is connected with the cathode of the diode D6, one end of the capacitor C9 is connected with the emitter of the triode Q4 and the other end of the resistor R12, and the cathode of the diode D6 is connected with the other end of the resistor R11.

Further preferably, the shaping circuit includes: the dual-D trigger U2A, a resistor R14, a resistor R12, a diode D7 and a capacitor C10; the pin No. 5 of the dual D flip-flop U2A is connected with the cathode of the diode D6, the pin No. 3 of the dual D flip-flop U2A is connected with one end of the resistor R14 and the other end of the capacitor C9 at the same time, the pin No. 4 of the dual D flip-flop U2A is connected with one end of the resistor R13, the anode of the diode D7 and one end of the capacitor C10 at the same time, the pin No. 1 of the dual D flip-flop U2A is connected with the other end of the resistor R13 and the cathode of the diode D7 at the same time, and the other end of the capacitor C10 is connected with the other end of the resistor R12.

Further preferably, the delay opening circuit includes: the triode Q5, the diode D8, the resistor R16, the resistor R15 and the capacitor C11 are connected, wherein the base of the triode Q5 is connected with one end of the resistor R15, the other end of the resistor R15 is connected with the cathode of the diode D8, one end of the resistor R16 and one end of the capacitor C11, the other end of the capacitor C11 is connected with the other end of the capacitor C10 and the emitter of the triode Q5, and the anode of the diode D8 is connected with the other end of the resistor R16 and the pin No. 2 of the dual-D flip-flop U2A.

Further preferably, the bi-stable circuits each comprise: the dual-D trigger U2B, a resistor R17, a resistor R18, a capacitor C12 and a thyristor U3; the pin 11 of the dual-D flip-flop U2B is connected to the collector of the transistor Q5 and the other end of the resistor R14, the pin 8 of the dual-D flip-flop U2B is connected to the pin 6 of the dual-D flip-flop U2A and is connected to a common terminal, the pin 9 of the dual-D flip-flop U2B is connected to one end of the resistor R12 and one end of the capacitor C12, the pin 12 of the dual-D flip-flop U2B is connected to the other end of the resistor R17, the pin 13 of the dual-D flip-flop U2B is connected to one end of the resistor R18, the pin 10 of the dual-D flip-flop U2B is connected to the common terminal, the other end of the resistor R18 is connected to the input end of the thyristor U3, one end of the thyristor U3 outputs, and the other end of the thyristor U3 is connected to and outputs the other end of the capacitor C12.

Further preferably, the signal detection unit includes: a switch SW1, an indicator light EL, a rectifier bridge BR1, a relay KM1, a thyristor U1, a resistor R1, a diode D1, a diode D2, a capacitor C1, a capacitor C2, a resistor R2, a capacitor C3, a diode D3, a transistor Q1, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a thermistor RG, a capacitor C4, a diode D4, a capacitor C5, a zener diode D5, a capacitor C6, a resistor R8, a transistor Q2, a resistor R7, a resistor R9, and a sound detector BM; wherein an input end of the rectifier bridge BR1 is connected to one end of the switch SW1 and one end of the indicator light EL for inputting voltage, the other end of the switch SW1 is connected to the other end of the indicator light EL, an input end of the rectifier bridge BR1 is connected to one end of the resistor R1, one end of the thyristor U1 and one end of the relay KM1 at the same time, the other end of the thyristor U1 is connected to the other end of the relay KM1, the other end of the resistor R2 is connected to one end of the thyristor U1 and one end of the capacitor C2 at the same time, the other end of the resistor R1 is connected to an anode of the diode D1, a cathode of the diode D1 is connected to a cathode of the diode D2 and one end of the capacitor C1 at the same time, the other end of the capacitor C1 is connected to an anode of the diode D2 and the other end of the relay KM1 and the other end of the capacitor C67 2 at the same time, one end of the capacitor C3 is connected to the other end of the resistor R2 and the negative electrode of the diode D3, the collector of the transistor Q1 is connected to the positive electrode of the diode D3, the emitter of the transistor Q1 is connected to the other end of the capacitor C1 and one end of the resistor R3, the base of the transistor Q1 is connected to the other end of the resistor R3, one end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is connected to one end of the thermistor RG and one end of the resistor R6, the negative electrode of the diode D4 is connected to the other end of the resistor R6 and one end of the capacitor C4, one end of the capacitor C5 is connected to the positive electrode of the diode D4 and the negative electrode of the zener diode D5, the collector of the transistor Q2 is connected to the other end of the capacitor C5, the collector of the capacitor C5 and the other end of the capacitor C5, One end of the resistor R7, one end of the resistor R8 and one end of the resistor R9 are connected, the other end of the resistor R3 and the other end of the resistor R8 are connected, the base of the transistor Q2 is connected to the other end of the resistor R7 and one end of the capacitor C6, the other end of the capacitor C6 is connected to the other end of the resistor R9 and one end of the sound detector BM, the emitter of the transistor Q2 is connected to the other end of the sound detector BM and the anode of the zener diode D5, the other end of the capacitor C4 is connected to the anode of the zener diode D5 and the other end of the thermistor RG, and the other end of the resistor R4 is connected to the other end of the thermistor RG and the other end of the capacitor C3.

Further preferably, the voltage comparing unit includes: the circuit comprises a comparator U4A, a triode Q6, a resistor R20, an adjustable resistor RV1 and a resistor R19; the No. 7 pin of the comparator U4A inputs a signal, the No. 6 pin of the comparator U4A is connected with one end and a control end of the adjustable resistor RV1, one end of the resistor R19 is connected with a collector of the triode Q6, a collector of the triode Q6 is connected with the other end of the resistor R19, the No. 3 pin of the comparator U4A and one end of the resistor R20 and inputs a voltage, the No. 1 pin of the comparator U4A is connected with a base of the triode Q6 and the other end of the resistor R20 and outputs a voltage, and the No. 12 pin of the comparator U4A is connected with the other end of the adjustable electronic RV and connected with a common end.

Further preferably, the electronic switch unit includes: the circuit comprises an analog switch U5A, an analog switch U5B, an analog switch U5C, an analog switch U5D, a resistor R21, a resistor R22, a resistor R23, a resistor R24, a resistor R25, a bidirectional thyristor U7, a photoelectric coupler U6, a capacitor C13 and a capacitor C14; wherein, the pin No. 2 of the analog switch U5A inputs a signal, the pin No. 10 of the analog switch U5B is connected to the pin No. 2 of the analog switch U5A, the pin No. 3 of the analog switch U5C and one end of the capacitor C14 at the same time and inputs a voltage, the other end of the capacitor C14 is connected to a common terminal, the pin No. 1 of the analog switch U5A is connected to the pin No. 11 of the analog switch U5B and the pin No. 4 of the analog switch U5C, the pin No. 13 of the analog switch U5A is connected to the pin No. 9 of the analog switch U5D and inputs a signal, the pin No. 12 of the analog switch U5B is connected to the pin No. 13 of the analog switch U5A, one end of the capacitor C13 and one end of the resistor R22, the pin No. 5 of the analog switch U5C is connected to one end of the resistor R356 and one end of the resistor R35 23, and one end of the resistor D is connected to the pin No. D, the No. 8 pin of the analog switch U5D is connected with the other end of the resistor R21 and the other end of the capacitor C13 and is connected with a common end, the No. 1 pin of the photoelectric coupler U6 is connected with the other end of the resistor R23, the No. 2 pin of the photoelectric coupler U6 is connected with the other end of the resistor R22 and the other end of the capacitor C13, the No. 6 pin of the photoelectric coupler U6 is connected with one end of the resistor R25, the No. 4 pin of the photoelectric coupler U6 is connected with one end of the resistor R24 and the side end of the triac U7, one end of the triac U7 is connected with the other end of the resistor R24, and the other end of the triac U7 is connected with the other end of the resistor R25 and outputs.

Further preferably, the model of the bidirectional triode thyristor U7 is MOC3021, and the models of the analog switch U5A, the analog switch U5B, the analog switch U5C and the analog switch U5D are all 74HCT 4066; the model of the comparator U4A is LM 399; the models of the double D trigger U2B and the double D trigger U2A are 4013.

A control method for a night intelligent illumination control circuit of a residential area is characterized in that a detection signal is amplified through an amplifying circuit, so that a pulse circuit is used for pulse output, the pulse signal width is adjusted through a shaping circuit, and a bistable circuit is matched with a delay starting circuit to effectively control the starting and the closing of illumination; the method comprises the following specific steps:

s1, signal input, wherein a triode Q4 is matched with a resistor R10 and a resistor R11 to form a signal amplifying circuit, wherein the resistor R10 is a base electrode bias resistor of the triode Q4, the resistor R11 is a collector electrode bias resistor of the triode Q4, when a signal is input, the triode Q4 is in an amplifying state, at the moment, a capacitor C7 is used for signal coupling, and an emitter electrode of the triode Q4 is used for amplifying and outputting;

s2, a pulse signal generating circuit is composed of a triode Q3, a diode D5, a capacitor C8, a capacitor C9 and a resistor R12, when the collector of the triode Q3 outputs a sound wave signal in a negative half cycle, the emitter of the triode Q3 is used for charging the capacitor C8, so that the triode Q3 is conducted, and the resistor R12 forms forward pulse voltage; when the collector of the triode Q3 outputs a sound wave signal in a positive half cycle, the positive charge output by the capacitor C8 is quickly charged through the diode D5, so that the diode D5 causes the base of the triode Q3 to be conducted, and the capacitor C9 performs filtering of the resistor R12;

s3, pulse signals are input to a shaping circuit consisting of a double-D trigger U2A, a capacitor C10, a resistor R13, a resistor R14 and a diode D7 to stabilize the pulse signal width, at the moment, the double-D trigger U2A, the capacitor C10, the resistor R13 and the diode D7 form a monostable circuit, so that irregular pulse signals are shaped into pulses with consistent width, the pulse width of the pulses is determined by the resistor R13 and the capacitor C10, and meanwhile, a No. 2 pin of the double-D trigger U2A outputs signals;

s4, the double-D trigger U2B is matched with a resistor R17 and a capacitor C12 to form a bistable circuit, and a resistor R17 and a capacitor C12 form a delay circuit, so that the double-D trigger U2B is turned over for delay, and the phenomenon that the double-D trigger U2B is turned over for multiple times due to multiple sound wave pulses to cause inaccurate output state control is avoided; the high and low levels of the output of the thyristor are controlled by a resistor R18 to carry out output control on a thyristor U3;

s5, a delay starting circuit consists of a triode Q5, a diode D8, a capacitor C11, a resistor R16 and a resistor R15, when a pin No. 2 of a double-D trigger U2B outputs a high level, the high level is output to the capacitor C11 through the diode D8 for quick charging, so that the triode Q5 is enabled to be in saturated conduction, at the moment, the circuit is in a blocking state, and a sound wave pulse signal cannot be controlled; when the pin 2 of the dual D flip-flop U2B outputs a low level, the charge on the capacitor C11 discharges through the resistor R16 and the resistor R15, and after the discharge is completed, the transistor Q5 is turned off; therefore, the circuit is in a delayed opening state, and the sound wave pulse signal normally controls the bistable circuit to turn over.

Further preferably, the values of the resistor R15 and the capacitor C11 are controlled in the delay-open circuit, so that the time interval: and the time constants of the resistor R15 and the capacitor C11 are much smaller than those of the resistor R13 and the capacitor C10.

Further preferably, at night, when an external load is turned on, the triode Q4 is in an amplification state, the triode Q3 is in a cut-off state at this time, the pin 1 of the dual D flip-flop U2A outputs a low level, but the pin 13 of the dual D flip-flop U2B outputs a high level, the thyristor U3 is in a conduction state at this time, the pin 2 of the dual D flip-flop U2A outputs a high level, the triode Q5 is in a saturation state, the pin 12 of the dual D flip-flop U2B outputs a low level signal, the delay is performed through the resistor R17, the output diode D7 of the capacitor C1 is conducted, and the pin 9 of the dual D flip-flop U2B outputs a low level; when two pulse signals appear in the circuit, the state of the bistable circuit is turned over once, the No. 13 pin of the double-D trigger U2B outputs low level, the thyristor U3 loses trigger voltage, the pulsating direct current is turned off when passing zero, and the external load lamp is changed from bright to dark until being turned off; when no signal exists, the circuit enters a waiting state again; the circuit can work again only when the pulse signal appears again; therefore, the anti-interference capability is improved, and intelligent control is realized.

Has the advantages that: the invention starts the lighting circuit in a delayed way through the acousto-optic cooperation control, and the main principle is that the light control component is utilized to control the circuit not to work in the daytime, the sound control component controls the circuit to work at night, and the delay component controls the working time of the circuit; in the daytime, the photoresistor RG control circuit cannot work no matter whether a sound emitting circuit exists outside or not, and the light control component does not work at night, the sound sensor BM detects the control circuit, and as long as sound is emitted in a certain range and reaches a certain loudness, the circuit is conducted to work, and the working time of the circuit is controlled by the delay starting circuit; therefore, the electric energy can be effectively saved, and meanwhile, when sound is generated at night, illumination can be automatically carried out, so that illumination convenience can be provided for people going out.

Drawings

FIG. 1 is a flow chart of the operation of the present invention.

Fig. 2 is a circuit diagram of a signal control unit of the present invention.

Fig. 3 is a circuit diagram of a signal detection unit of the present invention.

Fig. 4 is a circuit diagram of the voltage comparison unit of the present invention.

Fig. 5 is a circuit diagram of an electronic switching unit of the present invention.

Fig. 6 is a circuit diagram of the operation of the present invention.

Detailed Description

As shown in fig. 1, in this embodiment, an intelligent lighting control circuit for residential quarter night and a control method thereof includes: the device comprises a signal control unit, a signal detection unit, a voltage comparison unit and an electronic switch unit; wherein the signal control unit includes: the circuit comprises an amplifying circuit, a pulse circuit, a shaping circuit, a delay starting circuit and a bistable circuit.

As shown in fig. 2, the amplifying circuit includes: the circuit comprises a capacitor C7, a resistor R10, a resistor R11 and a triode Q4; the pulse circuit includes: the circuit comprises a triode Q3, a diode D6, a capacitor C8, a capacitor C9 and a resistor R12; the shaping circuit includes: the dual-D trigger U2A, a resistor R14, a resistor R12, a diode D7 and a capacitor C10; the delay opening circuit includes: the circuit comprises a triode Q5, a diode D8, a resistor R16, a resistor R15 and a capacitor C11; the bistable circuits each include: the dual-D trigger circuit comprises a dual-D trigger U2B, a resistor R17, a resistor R18, a capacitor C12 and a thyristor U3.

In a further embodiment, the base of the transistor Q4 is connected to both one end of the capacitor C7 and one end of the resistor R10, the collector of the transistor Q4 is connected to one end of the resistor R11, the other end of the capacitor C7 is connected to the emitter of the transistor Q4 for inputting a signal, and the other end of the resistor R10 is connected to the other end of the resistor R11 for inputting an operating voltage; the triode Q3 is connected with the anode of the diode D6 and one end of the capacitor C8 simultaneously in seasons, the collector of the triode Q3 is connected with one end of the resistor R12, the emitter of the triode Q3 is connected with the cathode of the diode D6, one end of the capacitor C9 is connected with the emitter of the triode Q4 and the other end of the resistor R12 simultaneously, and the cathode of the diode D6 is connected with the other end of the resistor R11; a pin No. 5 of the dual D flip-flop U2A is connected with the cathode of the diode D6, a pin No. 3 of the dual D flip-flop U2A is connected with one end of the resistor R14 and the other end of the capacitor C9 at the same time, a pin No. 4 of the dual D flip-flop U2A is connected with one end of the resistor R13, the anode of the diode D7 and one end of the capacitor C10 at the same time, a pin No. 1 of the dual D flip-flop U2A is connected with the other end of the resistor R13 and the cathode of the diode D7 at the same time, and the other end of the capacitor C10 is connected with the other end of the resistor R12; the base electrode of the triode Q5 is connected with one end of the resistor R15, the other end of the resistor R15 is simultaneously connected with the cathode of the diode D8, one end of the resistor R16 and one end of the capacitor C11, the other end of the capacitor C11 is simultaneously connected with the other end of the capacitor C10 and the emitter of the triode Q5, and the anode of the diode D8 is simultaneously connected with the other end of the resistor R16 and the pin No. 2 of the dual-D flip-flop U2A; pin 11 of the dual D flip-flop U2B is connected to the collector of the transistor Q5 and the other end of the resistor R14, pin 8 of the dual D flip-flop U2B is connected to pin 6 of the dual D flip-flop U2A and is connected to a common terminal, pin 9 of the dual D flip-flop U2B is connected to one end of the resistor R12 and one end of the capacitor C12, pin 12 of the dual D flip-flop U2B is connected to the other end of the resistor R17, pin 13 of the dual D flip-flop U2B is connected to one end of the resistor R18, pin 10 of the dual D flip-flop U2B is connected to the common terminal, the other end of the resistor R18 is connected to the input end of the thyristor U3, one end of the thyristor U3 outputs, and the other end of the thyristor U3 is connected to the other end of the capacitor C12 and outputs.

As shown in fig. 3, the signal detection unit includes: switch SW1, indicator light EL, rectifier bridge BR1, relay KM1, thyristor U1, resistor R1, diode D1, diode D2, capacitor C1, capacitor C2, resistor R2, capacitor C3, diode D3, transistor Q1, resistor R3, resistor R4, resistor R5, resistor R6, thermistor RG, capacitor C4, diode D4, capacitor C5, zener diode D5, capacitor C6, resistor R8, transistor Q2, resistor R7, resistor R9, and sound detector BM.

In a further embodiment, an input terminal of the rectifier bridge BR1 is connected to one terminal of the switch SW1 and one terminal of the indicator light EL for inputting a voltage, the other terminal of the switch SW1 is connected to the other terminal of the indicator light EL, an input terminal of the rectifier bridge BR1 is connected to one terminal of the resistor R1, one terminal of the thyristor U1 and one terminal of the relay KM1 at the same time, the other terminal of the thyristor U1 is connected to the other terminal of the relay KM1, the other terminal of the resistor R2 is connected to a side terminal of the thyristor U1 and one terminal of the capacitor C2 at the same time, the other terminal of the resistor R1 is connected to a positive terminal of the diode D1, a negative terminal of the diode D1 is connected to a negative terminal of the diode D2 and one terminal of the capacitor C1, the other terminal of the capacitor C1 is connected to a positive terminal of the diode D2 and the other terminal of the relay KM1 and the other terminal of the capacitor C2 at the same time, one end of the capacitor C3 is connected to the other end of the resistor R2 and the negative electrode of the diode D3, the collector of the transistor Q1 is connected to the positive electrode of the diode D3, the emitter of the transistor Q1 is connected to the other end of the capacitor C1 and one end of the resistor R3, the base of the transistor Q1 is connected to the other end of the resistor R3, one end of the resistor R4 and one end of the resistor R5, the other end of the resistor R5 is connected to one end of the thermistor RG and one end of the resistor R6, the negative electrode of the diode D4 is connected to the other end of the resistor R6 and one end of the capacitor C4, one end of the capacitor C5 is connected to the positive electrode of the diode D4 and the negative electrode of the zener diode D5, the collector of the transistor Q2 is connected to the other end of the capacitor C5, the collector of the capacitor C5 and the other end of the capacitor C5, One end of the resistor R7, one end of the resistor R8 and one end of the resistor R9 are connected, the other end of the resistor R3 and the other end of the resistor R8 are connected, the base of the transistor Q2 is connected to the other end of the resistor R7 and one end of the capacitor C6, the other end of the capacitor C6 is connected to the other end of the resistor R9 and one end of the sound detector BM, the emitter of the transistor Q2 is connected to the other end of the sound detector BM and the anode of the zener diode D5, the other end of the capacitor C4 is connected to the anode of the zener diode D5 and the other end of the thermistor RG, and the other end of the resistor R4 is connected to the other end of the thermistor RG and the other end of the capacitor C3.

As shown in fig. 4, the voltage comparing unit includes: the circuit comprises a comparator U4A, a triode Q6, a resistor R20, an adjustable resistor RV1 and a resistor R19.

In a further embodiment, the pin No. 7 of the comparator U4A inputs a signal, the pin No. 6 of the comparator U4A is connected to one end and a control end of the adjustable resistor RV1, one end of the resistor R19 is connected to a collector of the transistor Q6, a collector of the transistor Q6 is connected to the other end of the resistor R19, the pin No. 3 of the comparator U4A and one end of the resistor R20, and inputs a voltage, the pin No. 1 of the comparator U4A is connected to a base of the transistor Q6 and the other end of the resistor R20, and outputs a voltage, and the pin No. 12 of the comparator U4A is connected to the other end of the adjustable resistor RV and connected to a common terminal.

As shown in fig. 5, the electronic switch unit includes: the circuit comprises an analog switch U5A, an analog switch U5B, an analog switch U5C, an analog switch U5D, a resistor R21, a resistor R22, a resistor R23, a resistor R24, a resistor R25, a bidirectional thyristor U7, a photoelectric coupler U6, a capacitor C13 and a capacitor C14.

In a further embodiment, pin No. 2 of the analog switch U5A inputs a signal, pin No. 10 of the analog switch U5B is connected to pin No. 2 of the analog switch U5A, pin No. 3 of the analog switch U5C and one end of the capacitor C14 at the same time and inputs a voltage, the other end of the capacitor C14 is connected to a common terminal, pin No. 1 of the analog switch U5A is connected to pin No. 11 of the analog switch U5B and pin No. 4 of the analog switch U5C at the same time, pin No. 13 of the analog switch U5A is connected to pin No. 9 of the analog switch U5D and inputs a signal, pin No. 12 of the analog switch U5B is connected to pin No. 13 of the analog switch U5A, one end of the capacitor C13 and one end of the resistor R22 at the same time, pin No. 5 of the analog switch U5C is connected to one end of the resistor R22 and one end of the resistor 23, and one end of the resistor R5D is connected to pin No. 21, the No. 8 pin of the analog switch U5D is connected with the other end of the resistor R21 and the other end of the capacitor C13 and is connected with a common end, the No. 1 pin of the photoelectric coupler U6 is connected with the other end of the resistor R23, the No. 2 pin of the photoelectric coupler U6 is connected with the other end of the resistor R22 and the other end of the capacitor C13, the No. 6 pin of the photoelectric coupler U6 is connected with one end of the resistor R25, the No. 4 pin of the photoelectric coupler U6 is connected with one end of the resistor R24 and the side end of the triac U7, one end of the triac U7 is connected with the other end of the resistor R24, and the other end of the triac U7 is connected with the other end of the resistor R25 and outputs.

A control method for a night intelligent illumination control circuit of a residential area is characterized in that a detection signal is amplified through an amplifying circuit, so that a pulse circuit is used for pulse output, the pulse signal width is adjusted through a shaping circuit, and a bistable circuit is matched with a delay starting circuit to effectively control the starting and the closing of illumination; the method comprises the following specific steps:

step 1, inputting signals, wherein a triode Q4 is matched with a resistor R10 and a resistor R11 to form a signal amplifying circuit, wherein the resistor R10 is a base electrode biasing resistor of the triode Q4, the resistor R11 is a collector electrode biasing resistor of the triode Q4, when the signals are input, the triode Q4 is in an amplifying state, at the moment, the capacitor C7 is used for signal coupling, and an emitter electrode of the triode Q4 is used for amplifying and outputting;

step 1-2, a pulse signal generating circuit is formed by a triode Q3, a diode D5, a capacitor C8, a capacitor C9 and a resistor R12, when the collector of the triode Q3 outputs a sound wave signal in a negative half cycle, the emitter of the triode Q3 is used for charging the capacitor C8, so that the triode Q3 is conducted, and the resistor R12 forms forward pulse voltage; when the collector of the triode Q3 outputs a sound wave signal in a positive half cycle, the positive charge output by the capacitor C8 is quickly charged through the diode D5, so that the diode D5 causes the base of the triode Q3 to be conducted, and the capacitor C9 performs filtering of the resistor R12;

step 1-3, pulse signals are input to a shaping circuit consisting of a double-D trigger U2A, a capacitor C10, a resistor R13, a resistor R14 and a diode D7 to carry out pulse signal width stabilization, at the moment, the double-D trigger U2A, the capacitor C10, the resistor R13 and the diode D7 form a monostable circuit, so that irregular pulse signals are shaped into pulses with consistent widths, the pulse widths of the pulses are determined by the resistor R13 and the capacitor C10, and meanwhile, a No. 2 pin of the double-D trigger U2A outputs signals;

1-5, the double-D trigger U2B is matched with a resistor R17 and a capacitor C12 to form a bistable circuit, and a resistor R17 and a capacitor C12 form a delay circuit, so that the double-D trigger U2B is turned over and delayed, and the phenomenon that the double-D trigger U2B is turned over for multiple times due to multiple sound wave pulses to cause inaccurate output state control is avoided; the high and low levels of the output of the thyristor are controlled by a resistor R18 to carry out output control on a thyristor U3;

step 1-6, the delay starting circuit is composed of a triode Q5, a diode D8, a capacitor C11, a resistor R16 and a resistor R15, when a pin No. 2 of the double-D trigger U2B outputs a high level, the high level is output to the capacitor C11 through the diode D8 for quick charging, so that the triode Q5 is enabled to be in saturated conduction, at the moment, the circuit is in a blocking state, and the sound wave pulse signal cannot be controlled; when the pin 2 of the dual D flip-flop U2B outputs a low level, the charge on the capacitor C11 discharges through the resistor R16 and the resistor R15, and after the discharge is completed, the transistor Q5 is turned off; therefore, the circuit is in a delayed opening state, and the sound wave pulse signal normally controls the bistable circuit to turn over.

In a further embodiment, by controlling the values of resistor R15 and capacitor C11 in a time delay turn-on circuit, the time interval can be controlled: and the time constants of the resistor R15 and the capacitor C11 are much smaller than those of the resistor R13 and the capacitor C10.

In a further embodiment, at night, when an external load is turned on, the triode Q4 is in an amplification state, the triode Q3 is in a cut-off state at this time, the pin 1 of the dual D flip-flop U2A outputs a low level, but the pin 13 of the dual D flip-flop U2B outputs a high level, the thyristor U3 is in a conduction state at this time, the pin 2 of the dual D flip-flop U2A outputs a high level, the triode Q5 is in a saturation state, the pin 12 of the dual D flip-flop U2B outputs a low level signal, the time delay is performed through the resistor R17, the output diode D7 of the capacitor C1 is conducted, and the pin 9 of the dual D flip-flop U2B outputs a low level; when two pulse signals appear in the circuit, the state of the bistable circuit is turned over once, the No. 13 pin of the double-D trigger U2B outputs low level, the thyristor U3 loses trigger voltage, the pulsating direct current is turned off when passing zero, and the external load lamp is changed from bright to dark until being turned off; when no signal exists, the circuit enters a waiting state again; the circuit can work again only when the pulse signal appears again; therefore, the anti-interference capability is improved, and intelligent control is realized.

The working principle is as follows: the power supply voltage closes the input circuit through the switch SW1, so that the indicator light EL displays green, thereby explaining that the circuit works, and the rectifier bridge BR1 carries out rectification output to provide working voltage for the circuit; when a residential quarter is at night, in the signal detection module, the photoresistor RG carries out external light detection, when external light is weaker, the resistance value inside the photoresistor RG is larger, attenuation of direct current control voltage is small, and therefore when the internal impedance of the photoresistor RG is lower than the range, the triode Q1 is cut off; therefore, the sound sensor BM operates to detect external sound, when sound is detected, the sound sensor BM performs protection output through the resistor R9, the resistor R7 and the resistor R8, the transistor Q2 is used for amplifying signals at this time, the capacitor C6 performs signal filtering, the capacitor C4 and the capacitor C5 form a rectifying circuit by matching the diode D4 and the zener diode D5, sound wave signals are changed into direct current control voltage, the transistor Q1 is conducted at the same time, the diode D3 is prompted to be conducted, the capacitor C2 and the capacitor C3 start charging, and the voltage rises. The resistor R2 is matched with the capacitor C3 thyristor U1 to supply power, so that the thyristor U1 is switched on, and the coil in the relay KM1 is electrified to output signals;

the sound wave signal is amplified through the amplifying circuit, so that pulse output is performed by using the pulse circuit, the pulse signal width is adjusted through the shaping circuit, and the bistable circuit can effectively control the on and off of illumination by matching with the delay starting circuit; the signal input device comprises a triode Q4, a resistor R10 and a resistor R11 which form a signal amplification circuit, wherein the resistor R10 is a base electrode bias resistor of the triode Q4, the resistor R11 is a collector electrode bias resistor of the triode Q4, when a signal is input, the triode Q4 is in an amplification state, at the moment, the capacitor C7 performs signal coupling, and an emitter electrode of the triode Q4 performs amplification output;

meanwhile, a pulse signal generating circuit is composed of a triode Q3, a diode D5, a capacitor C8, a capacitor C9 and a resistor R12, when the collector of the triode Q3 outputs a sound wave signal in a negative half cycle, the emitter of the triode Q3 is used for charging the capacitor C8, so that the triode Q3 is conducted, and the resistor R12 forms forward pulse voltage; when the collector of the triode Q3 outputs a sound wave signal in a positive half cycle, the positive charge output by the capacitor C8 is quickly charged through the diode D5, so that the diode D5 causes the base of the triode Q3 to be conducted, and the capacitor C9 performs filtering of the resistor R12;

pulse signals are input to a shaping circuit consisting of a double-D trigger U2A, a capacitor C10, a resistor R13, a resistor R14 and a diode D7 to carry out pulse signal width stabilization, at the moment, the double-D trigger U2A, the capacitor C10, the resistor R13 and the diode D7 form a monostable circuit, so that irregular pulse signals are shaped into pulses with the same width, the pulse width of the pulses is determined by the resistor R13 and the capacitor C10, and meanwhile, a No. 2 pin of the double-D trigger U2A carries out signal output;

the double-D trigger U2B is matched with a resistor R17 and a capacitor C12 to form a bistable circuit, and a resistor R17 and a capacitor C12 form a delay circuit, so that the double-D trigger U2B is turned over and delayed, and the phenomenon that the double-D trigger U2B is turned over for multiple times due to multiple sound wave pulses to cause inaccurate output state control is avoided; the high and low levels of the output of the thyristor are controlled by a resistor R18 to carry out output control on a thyristor U3;

the delay starting circuit consists of a triode Q5, a diode D8, a capacitor C11, a resistor R16 and a resistor R15, when the pin No. 2 of the double-D trigger U2B outputs high level, the high level is output to the capacitor C11 through the diode D8 for quick charging, so that the triode Q5 is enabled to be in saturated conduction, at the moment, the circuit is in a blocking state, and the sound wave pulse signal cannot be controlled; when the pin 2 of the dual D flip-flop U2B outputs a low level, the charge on the capacitor C11 discharges through the resistor R16 and the resistor R15, and after the discharge is completed, the transistor Q5 is turned off; therefore, the circuit is in a delayed opening state, and the sound wave pulse signal normally controls the bistable circuit to turn over;

meanwhile, when signal control is carried out, circuit voltage is compared, and therefore output voltage is judged; the working voltage is input through a comparator U4A, meanwhile, a No. 7 pin of the comparator U4A inputs signals, internal comparison is carried out, a triode Q6 is provided with a resistor R19 to stabilize the signals, and an adjustable resistor RV1 adjusts the internal impedance of the comparator U4A, so that the signal voltage is compared with internal fixed voltage, and the comparator U4A is determined to output high level;

at night, when sound is generated outside, the sound sensor BM detects that high level is output and controlled through the signal control unit and the voltage comparison unit, so that the electronic switch unit receives signals and charges the capacitor C13, when the capacitor C13 is charged to working voltage, the pin 13 of the electronic switch U5A, the pin 12 of the electronic switch U5B and the pin 5 of the electronic switch U5C output high level, so that the electronic switch U5A, the electronic switch U5B and the electronic switch U5C are closed internally, voltage is output to the power supply coupler U6 through the electronic switch U5A, the electronic switch U5B and the electronic switch U5C through the electronic R23, so that the photoelectric coupler U6 works internally, the photoelectric coupler U6 is turned on, the bidirectional thyristor U7 is also turned on, and the external illuminating lamp works normally; when the external sound is too small, the voltage on the capacitor C13 is reduced to the working voltage of the electronic switch U5A, the electronic switch U5B and the electronic switch U5C, so that the electronic switch U5A, the electronic switch U5B and the electronic switch U5C are internally disconnected, the photocoupler U6 is internally turned off, the triac U7 is also turned off, no output signal is output, and the external illuminating lamp is turned off.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.