CN104219847A - Indoor automatic illumination circuit - Google Patents

Abstract

An indoor automatic lighting circuit belongs to the technical field of indoor lighting. It includes a regulated power supply circuit, a trigger circuit, a memory circuit and a lighting photoelectric voltage divider circuit. The regulated power supply circuit is connected to the trigger circuit, the memory circuit and the lighting photoelectric voltage divider circuit respectively. The memory circuit is connected to the trigger circuit and the lighting photoelectric voltage divider circuit respectively. The lighting photoelectric voltage divider circuit is connected, and the lighting photoelectric voltage divider circuit includes a sliding rheostat W, a phototransistor BG, a second transistor VT2, a seventh resistor R7, a triac VS and a lighting lamp ZD. The door opening trigger signal is collected through the trigger circuit composed of Hall sensor B; the memory circuit is used to distinguish the door opening and closing signals, so that the light is turned on when someone opens the door and enters, and the light is turned off when the door is opened; the lighting photoelectric voltage divider circuit is used to realize the light control effect, Do not turn on the light when the light intensity is high during the day, and turn on the light at night or when the light is dark during the day, which has the advantages of convenient use, reliable operation, and remarkable energy-saving effect.

Description

Indoor automatic lighting circuit

technical field

The invention belongs to the technical field of indoor lighting, and in particular relates to an indoor automatic lighting circuit.

Background technique

For a long time, people have been accustomed to using manual switches to realize the switch control of indoor lights such as kitchens and bathrooms. The human factor is large, and power is often wasted due to forgetting to turn off the lights. With the development of science and technology and the promotion of national energy conservation and emission reduction policies, the control methods of indoor lighting are also gradually updated. Some lighting circuits are developed to use pyroelectric infrared sensor modules to collect infrared signals emitted by the human body to achieve automatic lighting control. When infrared signals are detected, the lights are automatically turned on for lighting; when people leave, the lights are turned off to save energy. However, the pyroelectric infrared sensor module has the following shortcomings in the actual application process: complex installation, high price, and difficult management. In addition, because it does not have a supporting light control circuit, it will also enter the sensing area due to human body during the day And turn on the lighting circuit, causing the waste of electric energy. For example, the "timed automatic lighting switch" recommended by China Utility Model Patent Authorization Announcement No. CN203416451U uses a photosensitive triode to sense indoor natural light to realize the light control effect of turning off the light when the natural light is sufficient and automatically turning on the light when the natural light is insufficient. And the dry reed switch realizes the automatic lighting control that the light is on when people open the door and enters, and the light is off after a certain time delay. However, in this design scheme, if you need to continue to illuminate, you need to manually close the switch, and the phenomenon of "eternal light" will still occur if you don't pay attention; in addition, the reed switch is a mechanical magnetic switch. devices, which have a limited operating life and are prone to damage during installation.

In view of the above-mentioned prior art, it is necessary to improve the existing indoor automatic lighting circuit. For this reason, the applicant has made a useful design, and the technical solution to be introduced below is produced under this background.

Contents of the invention

The object of the present invention is to provide an indoor automatic lighting circuit which is easy to use, reliable in operation and has a light control function.

The object of the present invention is achieved in this way, an indoor automatic lighting circuit, characterized in that it includes a regulated power supply circuit, a trigger circuit, a memory circuit and an illumination photoelectric voltage divider circuit, and the described regulated power supply circuit is connected with the trigger circuit respectively. , the memory circuit and the lighting photoelectric voltage divider circuit, the memory circuit is respectively connected with the trigger circuit and the lighting photoelectric voltage divider circuit, and the memory circuit includes a first trigger IC1, a second trigger IC2, a second resistor R2 , the third resistor R3, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, the third capacitor C3, the fourth capacitor C4, the first triode VT1, the second diode VD2, the button switch SA, the relay Coil J, and the relay contact J-1 corresponding to the relay coil J, one end of the second resistor R2 is connected to pin 3 of the first trigger IC1, and connected to the trigger as the signal input end of the memory circuit circuit, pin 4 of the first trigger IC1 is respectively connected to the positive pole of the third capacitor C3 and one end of the third resistor R3, and the other end of the third resistor R3 is respectively connected to pin 1 of the first trigger IC1 and one end of the button switch SA 1. One end of the fourth resistor R4 is connected to pin 11 of the second trigger IC2, pin 9 of the second trigger IC2 is connected to pin 12, pin 10 of the second trigger IC2 is respectively connected to one end of the fourth capacitor C4 and the fifth One end of the resistor R5 is connected, pin 13 of the second trigger IC2 is connected to one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected to the base of the first triode VT1, and the collector of the first triode VT1 Connect with one end of the relay coil J and the anode of the second diode VD2, the other end of the second resistor R2, pins 5 and 14 of the first trigger IC1, the other end of the button switch SA, and the other end of the fourth capacitor C4 , the other end of the relay coil J, the negative pole of the second diode VD2, and one end of the relay contact J-1 are jointly connected to the positive output end of the stabilized power supply circuit, and the other end of the relay contact J-1 is used as a memory The output end of the circuit is connected to the lighting photoelectric voltage divider circuit, pin 6 of the first trigger IC1, the negative pole of the third capacitor C3, the other end of the fourth resistor R4, the other end of the fifth resistor R5, the second trigger Pins 7 and 8 of IC2 and the emitter of the first triode VT1 are connected to the negative output terminal of the regulated power supply circuit. The lighting photoelectric voltage divider circuit includes a sliding rheostat W, a photosensitive triode BG, and a second triode VT2 , the seventh resistor R7, triac VS and lighting ZD, one end of the sliding rheostat W is connected to the sliding end, and connected to the memory circuit as the input end of the lighting photoelectric voltage divider circuit, the sliding rheostat W The other end is respectively connected to the collector of the phototransistor BG and the base of the second triode VT2, the collector of the second triode VT2 is connected to one end of the seventh resistor R7, and the other end of the seventh resistor R7 is connected to the bidirectional adjustable The control electrode of the triac VS is connected, one main electrode of the bidirectional thyristor VS is connected to the L line of the external AC power supply, and the other main electrode of the bidirectional thyristor VS The electrode is connected to one end of the lighting lamp ZD, the other end of the lighting lamp ZD is connected to the N line of the external AC power supply, the emitter of the phototransistor BG and the emitter of the second triode VT2 are jointly connected to the negative output terminal of the regulated power supply circuit.

In a specific embodiment of the present invention, the regulated power supply circuit includes a first resistor R1, a first capacitor C1, a second capacitor C2, a first diode VD1 and a voltage regulator DW. The first One end of a resistor R1 and one end of the first capacitor C1 are jointly connected to the L line of the external AC power supply, and the other end of the first resistor R1 is respectively connected to the other end of the first capacitor C1, the negative pole of the regulator tube DW and the first diode The positive pole of VD1 is connected, the negative pole of the first diode VD1 is connected with the positive pole of the second capacitor C2, and the positive pole output terminal of the voltage-stabilizing power supply circuit is respectively connected with the trigger circuit, the memory circuit and the lighting photoelectric voltage divider circuit. The positive pole of the DW and the negative pole of the second capacitor C2 are connected to the N line of the external AC power supply, and are connected to the trigger circuit, the memory circuit and the lighting photoelectric voltage divider circuit respectively as the negative pole output terminal of the regulated power supply circuit.

In another specific embodiment of the present invention, the trigger circuit includes a Hall sensor B and a magnetic steel T used in conjunction with the Hall sensor B, wherein the Hall sensor B adopts SL3020, and the Hall The positive power input terminal of the sensor B is connected to the positive output terminal of the regulated power supply circuit, the negative power input terminal of the Hall sensor B is connected to the negative output terminal of the regulated power supply circuit, and the signal output terminal of the Hall sensor B is connected to the memory circuit .

In yet another specific embodiment of the present invention, the first flip-flop IC1 and the second flip-flop IC2 use the same double-D flip-flop, and the double-D flip-flop is CD4013.

In yet another specific embodiment of the present invention, the Hall sensor B is installed on the door frame, and the magnetic steel T is installed on the door at a position corresponding to the Hall sensor B.

In yet another specific embodiment of the present invention, the Hall sensor B is installed on the door, and the magnetic steel T is installed on the door frame at a position corresponding to the Hall sensor B.

Because the present invention adopts the above-mentioned structure, the door-opening trigger signal is collected through the trigger circuit composed of the Hall sensor B; the memory circuit is used to distinguish the door-opening signal, so that the light is turned on when someone opens the door and enters, and the light is turned off when the door is left; The lighting photoelectric voltage divider circuit described above is used to realize the light control effect. The light is not turned on when the light intensity is high during the day, and the light is turned on at night or when the light is dark during the day. It has the advantages of convenient use, reliable operation, and remarkable energy-saving effect.

Description of drawings

Fig. 1 is the electrical schematic diagram of the present invention.

Detailed ways

The applicant will describe in detail the specific implementation of the present invention below in conjunction with the accompanying drawings, but the applicant's description of the embodiments is not a limitation to the technical solution, and any changes made in form but not in substance according to the concept of the present invention should be regarded as the present invention. scope of protection.

Please refer to Figure 1, an indoor automatic lighting circuit, including a regulated power supply circuit, a trigger circuit, a memory circuit and a photoelectric voltage divider circuit for lighting. The voltage stabilizing power supply circuit is respectively connected with the trigger circuit, the memory circuit and the lighting photoelectric voltage divider circuit, and the memory circuit is connected with the trigger circuit and the lighting photoelectric voltage divider circuit respectively. The stabilized power supply circuit includes a first resistor R1, a first capacitor C1, a second capacitor C2, a first diode VD1 and a regulator DW. One end of the first resistor R1 and one end of the first capacitor C1 are jointly connected to the L line (live wire) of the external AC power supply, and the other end of the first resistor R1 is respectively connected to the other end of the first capacitor C1 and the voltage regulator DW. The cathode is connected to the anode of the first diode VD1. The negative pole of the first diode VD1 is connected to the positive pole of the second capacitor C2, and the positive pole output end of the voltage-stabilizing power supply circuit is respectively connected to the trigger circuit, the memory circuit and the lighting photoelectric voltage divider circuit. The positive pole of the regulator tube DW and the negative pole of the second capacitor C2 are jointly connected to the N line (zero line) of the external AC power supply, and the negative pole output terminal of the voltage stabilized power supply circuit is respectively connected to the trigger circuit, the memory circuit and the lighting photoelectric voltage divider circuit . The external 220V AC power supply becomes a stable 12V DC voltage after being stepped down by the first capacitor C1 to limit the current, rectified by the first diode VD1, filtered by the second capacitor C2, and stabilized by the regulator DW, which are the trigger circuit and the memory circuit respectively. And the lighting photoelectric voltage divider circuit provides power. The trigger circuit includes a Hall sensor B and a magnet T used in conjunction with the Hall sensor B. In this embodiment, the Hall sensor B is SL3020. The positive power input terminal (pin 1) of the Hall sensor B is connected to the positive output terminal of the regulated power supply circuit, and the negative power input terminal (pin 2) of the Hall sensor B is connected to the negative output terminal of the regulated power supply circuit. The signal output terminal (pin 3) of sensor B is connected to the memory circuit. In actual application, the Hall sensor B and the magnetic steel T are installed on the door and the door frame respectively. When the Hall sensor B is installed on the door frame, the magnetic steel T is installed on the door and the Hall sensor B Corresponding position; when the Hall sensor B is installed on the door, the magnetic steel T is installed on the door frame at a position corresponding to the Hall sensor B. The memory circuit includes a first trigger IC1, a second trigger IC2, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a third capacitor C3, a fourth Capacitor C4, the first triode VT1, the second diode VD2, the button switch SA, the relay coil J and the relay contact J-1 corresponding to the relay coil J, in this embodiment, the first trigger The flip-flop IC1 and the second flip-flop IC2 use the same double D flip-flop, and the double-D flip-flop is CD4013. The button switch SA adopts CS316, and the relay corresponding to the relay coil J and the relay contact J-1 is a 3V small DC relay. One end of the second resistor R2 is connected to pin 3 of the first flip-flop IC1, and is used as a signal input end of the memory circuit to connect to the flip-flop circuit. Pin 4 of the first trigger IC1 is respectively connected to the positive pole of the third capacitor C3 and one end of the third resistor R3, and the other end of the third resistor R3 is respectively connected to pin 1 of the first trigger IC1, one end of the button switch SA, and the third resistor R3. One end of the four resistors R4 is connected to pin 11 of the second trigger IC2, pin 9 of the second trigger IC2 is connected to pin 12, pin 10 of the second trigger IC2 is connected to one end of the fourth capacitor C4 and the fifth resistor R5 One end of the second flip-flop IC2 is connected to one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected to the base of the first triode VT1, and the collector of the first triode VT1 is connected to the relay One end of the coil J is connected to the anode of the second diode VD2. The other end of the second resistor R2, pins 5 and 14 of the first trigger IC1, the other end of the button switch SA, the other end of the fourth capacitor C4, the other end of the relay coil J, the negative pole of the second diode VD2 and One end of the relay contact J-1 is commonly connected to the positive output end of the stabilized power supply circuit, and the other end of the relay contact J-1 is used as the output end of the memory circuit to be connected to the lighting photoelectric voltage divider circuit. Pin 6 of the first trigger IC1, the negative pole of the third capacitor C3, the other end of the fourth resistor R4, the other end of the fifth resistor R5, pins 7 and 8 of the second trigger IC2, and the pin of the first triode VT1 The emitters are commonly connected to the negative output terminal of the regulated power supply circuit. Here, the first flip-flop IC1 is connected as a monostable circuit, and the second flip-flop IC2 is connected as a bistable circuit. Since pin 6 of the first flip-flop IC1 is fixedly grounded, pin 1 outputs a low level; At the moment when the second trigger IC2 is powered on, a positive peak pulse after the differentiation of the fourth capacitor C4 and the fifth resistor R5 acts on the pin 10, so that the second trigger IC2 is reset, and the pin 13 outputs a low level. The first triode VT1 is cut off, the relay coil J is de-energized, the relay contact J-1 is disconnected, and the lighting photoelectric voltage divider circuit is disconnected. The lighting photoelectric voltage divider circuit includes a sliding rheostat W, a phototransistor BG, a second triode VT2, a seventh resistor R7, a triac VS and a lighting lamp ZD. In this embodiment, the phototransistor BG is 3DU33 , Triac VS uses 3A/600V triac. Other electronic components in this embodiment can be conventional components without special requirements. One end of the sliding rheostat W is connected to the sliding end, and is connected to the memory circuit as the input end of the lighting photoelectric voltage divider circuit. The other end of the sliding rheostat W is respectively connected to the collector of the phototransistor BG and the base of the second transistor VT2, the collector of the second transistor VT2 is connected to one end of the seventh resistor R7, and the other end of the seventh resistor R7 One end is connected to the control pole of the triac VS. One main electrode of the bidirectional thyristor VS is connected to the L line of the external AC power supply, the other main electrode of the triac VS is connected to one end of the lighting lamp ZD, and the other end of the lighting lamp ZD is connected to the N line of the external AC power supply. The emitter of the phototransistor BG and the emitter of the second triode VT2 are jointly connected to the negative output terminal of the regulated power supply circuit.

Please continue to refer to FIG. 1 , and use bathroom lighting as an application example to illustrate the working principle of the present invention. The Hall sensor B is installed above the door, and the magnetic steel T is installed on the door frame at a position corresponding to the Hall sensor B. In normal times, the bathroom door is always closed, and the Hall sensor B outputs a low level because it is close to the magnetic steel T, and there is no pulse to trigger the first trigger IC1, so the second trigger IC2 does not flip, and the first triode VT1 , The bidirectional thyristor VS cuts off, and the lighting ZD does not light up. When someone opens the door and enters the bathroom and closes the door, the magnetic steel T leaves the Hall sensor B, so that the Hall sensor B outputs a high level, the first trigger IC1 is triggered, pin 1 outputs a high level, and the second trigger IC2 occurs Flip over, the high level output by pin 13 is amplified by the first triode VT1, the relay coil J is energized, the relay contact J-1 is closed, and the lighting photoelectric voltage divider circuit starts to work. If it is daytime and the indoor light is good, the phototransistor BG is in a low-resistance state, and it divides the voltage with the sliding rheostat W, so that the base of the second transistor VT2 is at a low potential, and the second transistor VT2 is cut off. The bidirectional thyristor VS is cut off without trigger voltage, and the lighting ZD is not on. If it is nighttime, or when the indoor light is not enough during the day, the phototransistor BG is in a high-impedance state, and it divides the voltage with the sliding rheostat W, so that the base of the second transistor VT2 is at a high potential, and the second transistor VT2 Saturation conduction triggers triac VS conduction, lighting ZD is energized and lit. When the person opens the door to leave the bathroom and closes the door, the magnetic steel T makes the Hall sensor B output a high level again, and the high level triggers the first trigger IC1 again and makes the second trigger IC2 reverse, and the second trigger IC2 Pin 13 becomes low level, the relay coil J loses power, the lighting photoelectric voltage divider circuit is disconnected, and the lighting lamp ZD goes out. The temporary steady state time of the first flip-flop IC1 is determined by the third resistor R3 and the third capacitor C3, generally 3-5 seconds. During this time, if the door is opened several times, the first flip-flop IC1 will not be affected. The button switch SA is a manual button, which is set to deal with some special situations. For example, when the door is opened for cleaning and the light needs to be turned on, the button switch SA can be pressed once or twice to make the second trigger IC2 change the output state, and light ZD to be turned on or extinguished.

Claims (6)

1. a kind of indoor automatic lighting circuit, is characterized in that: comprise voltage-stabilized power supply circuit, circuits for triggering, memory circuit and illumination photoelectricity bleeder circuit, described voltage-stabilized power supply circuit respectively with circuits for triggering, memory circuit and illumination photoelectricity bleeder circuit connect, and described memory circuit is connected with circuits for triggering and illumination photoelectricity bleeder circuit respectively, and described memory circuit comprises the first trigger IC1, the second trigger IC2, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 3rd capacitor C 3, the 4th capacitor C 4, the first triode VT1, the second diode VD2, push-button switch SA, relay coil J, and the relay contact J-1 corresponding with relay coil J, one end of the second described resistance R 2 is connected with 3 pin of the first trigger IC1, and connect described circuits for triggering as the signal input part of memory circuit, 4 pin of the first trigger IC1 are connected with one end of anodal and the 3rd resistance R 3 of the 3rd capacitor C 3 respectively, the other end of the 3rd resistance R 3 respectively with 1 pin of the first trigger IC1, one end of push-button switch SA, 11 pin of one end of the 4th resistance R 4 and the second trigger IC2 connect, 9 pin of the second trigger IC2 are connected with 12 pin, 10 pin of the second trigger IC2 are connected with one end of the 4th capacitor C 4 and one end of the 5th resistance R 5 respectively, 13 pin of the second trigger IC2 are connected with one end of the 6th resistance R 6, the other end of the 6th resistance R 6 connects the base stage of the first triode VT1, the collector electrode of the first triode VT1 is connected with one end of relay coil J and the positive pole of the second diode VD2, the other end of the second resistance R 2, 5 of the first trigger IC1, 14 pin, the other end of push-button switch SA, the other end of the 4th capacitor C 4, the other end of relay coil J, the common cathode output end that connects described voltage-stabilized power supply circuit in one end of the negative pole of the second diode VD2 and relay contact J-1, the other end of relay contact J-1 connects described illumination photoelectricity bleeder circuit, 6 pin of the first trigger IC1 as the output of memory circuit, the negative pole of the 3rd capacitor C 3, the other end of the 4th resistance R 4, the other end of the 5th resistance R 5, 7 of the second trigger IC2, the emitter of 8 pin and the first triode VT1 connects the cathode output end of voltage-stabilized power supply circuit jointly, and described illumination photoelectricity bleeder circuit comprises slide rheostat W, phototriode BG, the second triode VT2, the 7th resistance R 7, bidirectional triode thyristor VS and illuminating lamp ZD, one end of described slide rheostat W is connected with sliding end, and connect described memory circuit as the input of illumination photoelectricity bleeder circuit, the other end of slide rheostat W is connected with the collector electrode of phototriode BG and the base stage of the second triode VT2 respectively, the collector electrode of the second triode VT2 is connected with one end of the 7th resistance R 7, the other end of the 7th resistance R 7 is connected with the control utmost point of bidirectional triode thyristor VS, a main electrode of bidirectional triode thyristor VS connects the L line of external ac power source, another main electrode of bidirectional triode thyristor VS is connected with one end of illuminating lamp ZD, the other end of illuminating lamp ZD connects the N line of external ac power source, and the emitter of phototriode BG and the emitter of the second triode VT2 are connected the cathode output end of voltage-stabilized power supply circuit jointly.

2. indoor automatic lighting circuit according to claim 1, it is characterized in that described voltage-stabilized power supply circuit comprises the first resistance R 1, the first capacitor C 1, the second capacitor C 2, the first diode VD1 and voltage-stabiliser tube DW, one end of the first described resistance R 1 and one end of the first capacitor C 1 are connected the L line of external ac power source jointly, the other end of the first resistance R 1 respectively with the other end of the first capacitor C 1, the positive pole of the negative pole of voltage-stabiliser tube DW and the first diode VD1 connects, the negative pole of the first diode VD1 is connected with the positive pole of the second capacitor C 2, and as the cathode output end of voltage-stabilized power supply circuit respectively with circuits for triggering, memory circuit and illumination photoelectricity bleeder circuit connect, the positive pole of voltage-stabiliser tube DW and the negative pole of the second capacitor C 2 are connected the N line of external ac power source jointly, and as the cathode output end of voltage-stabilized power supply circuit respectively with circuits for triggering, memory circuit and illumination photoelectricity bleeder circuit connect.

3. indoor automatic lighting circuit according to claim 1, it is characterized in that described circuits for triggering comprise Hall element B and and the magnet steel T that is used in conjunction with of described Hall element B, wherein, Hall element B adopts SL3020, the positive supply input of Hall element B connects the cathode output end of voltage-stabilized power supply circuit, the negative supply input of Hall element B connects the cathode output end of voltage-stabilized power supply circuit, and the signal output part of Hall element B connects described memory circuit.

4. indoor automatic lighting circuit according to claim 2, is characterized in that described the first trigger IC1 and the second trigger IC2 adopt same double D trigger, and described double D trigger is CD4013.

5. indoor automatic lighting circuit according to claim 3, is characterized in that described Hall element B is arranged on doorframe, and described magnet steel T is arranged on a upper position corresponding with Hall element B.

6. indoor automatic lighting circuit according to claim 3, is characterized in that described Hall element B is arranged on door upper, and described magnet steel T is arranged on position corresponding with Hall element B on doorframe.