CN213847093U

CN213847093U - Illumination control system

Info

Publication number: CN213847093U
Application number: CN202023062732.3U
Authority: CN
Inventors: 赵启斌
Original assignee: Shenzhen Hongshi Decoration Engineering Co ltd
Current assignee: Shenzhen Hongshi Decoration Engineering Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-07-30
Anticipated expiration: 2030-12-17

Abstract

The application relates to the field of household control systems, in particular to an illumination control system, which comprises a power supply VCC and a transformer, wherein a primary side coil of the transformer is connected to commercial power, and a secondary side coil of the transformer is used for providing voltage; the detection circuit is connected to a power supply VCC and used for sensing whether a human body approaches and outputting a detection signal; the amplifying circuit is connected with the detection circuit, receives the detection signal of the detection circuit and amplifies and outputs the detection signal; a first control circuit connected to the power source VCC and the amplification circuit, responding to the amplified detection signal of the amplification circuit and outputting a control signal; the second control circuit is connected with the secondary side coil of the transformer, responds to the control signal of the first control circuit and outputs a lamp-on signal; and the lighting circuit is connected with the second control circuit and responds to the lighting signal of the second control circuit to carry out lighting indication. The application has the effect of facilitating the visual field acquisition of people at night.

Description

Illumination control system

Technical Field

The application relates to the field of household control systems, in particular to an illumination control system.

Background

At present, in the environment at home, people often have the habit of getting up at night, and when people got up at night, need first grope the switch at the head of a bed, then open the fluorescent lamp on bedroom roof then just can see the environment clearly, but look for the switch in the dark not only can waste people's time, can touch moreover and overturn other article, and the action of giving people causes inconveniently.

In view of the above-mentioned related art, the inventors considered that there was a drawback that it was inconvenient for people to turn on the lamp at night.

SUMMERY OF THE UTILITY MODEL

In order to enable people to conveniently obtain a visual field when the people get up at night, the application provides a lighting control system.

The application provides an illumination control system adopts following technical scheme:

a lighting control system comprises a power supply VCC and a transformer, wherein a primary side coil of the transformer is connected to a mains supply, and a secondary side coil of the transformer is used for providing voltage; also comprises

The detection circuit is connected with a power supply VCC and used for sensing a human body and outputting a detection signal;

the amplifying circuit is connected with the detection circuit, receives the detection signal of the detection circuit and amplifies and outputs the detection signal;

a first control circuit connected to the power source VCC and the amplification circuit, responding to the amplified detection signal of the amplification circuit and outputting a control signal;

the second control circuit is connected with the secondary side coil of the transformer, responds to the control signal of the first control circuit and outputs a lamp-on signal; and

and the lighting circuit is connected with the second control circuit and responds to the lighting signal of the second control circuit to carry out lighting indication.

By adopting the technical scheme, the detection circuit can detect the approach of a human body and then outputs a detection signal, the detection signal is amplified and then input to the first control circuit, the first control circuit outputs a control signal after receiving the detection signal, the control signal controls the second control circuit to be conducted and outputs a light-on signal, and the lighting circuit responds to the light-on signal to conduct lighting; the lighting lamp has the advantages that people can realize lighting without looking for a switch in the dark, so that the probability of human body injury is reduced, and the lighting lamp is convenient for people to get up at night.

Optionally, the detection circuit includes a pyroelectric human body sensor P1 and a resistor R1, an input end of the pyroelectric human body sensor P1 is connected to the power VCC, a ground end is grounded, and an output end is connected to one end of the resistor R1.

Through adopting above-mentioned technical scheme, the human inductor that releases electricity can detect the human body that is close, then loses a voltage signal at its output, and resistor R1 has played the effect of the human inductor that releases electricity of protection, has reduced the probability that the human inductor that releases electricity was burnt out.

Optionally, the amplifying circuit includes a voltage amplifier V1, a resistor Rf and a resistor R2, the same-direction input end of the voltage amplifier V1 is connected to the end of the resistor R1 which is not connected to the pyroelectric human body sensor P1, the inverting-direction input end of the voltage amplifier V1 is connected to one end of the resistor R2, and the other end of the resistor R2 is grounded; one end of the resistor Rf is connected to the output terminal of the voltage amplifier V1, and the other end of the resistor Rf is connected to the inverting input terminal of the voltage amplifier V1.

By adopting the technical scheme, the resistor Rf is a feedback resistor, the resistor Rf and the resistor R2 jointly determine the amplification factor of the voltage amplifier V1, and the voltage amplifier V1 can be adjusted to a proper amplification factor by changing the resistance values of the resistor Rf and the resistor R2.

Optionally, the first control circuit includes an NPN-type transistor VT1 and a relay KM, a base of the transistor VT1 is connected to an output terminal of the voltage amplifier V1, an emitter of the transistor VT1 is grounded, and a collector of the transistor VT is connected to the power supply VCC.

Through adopting above-mentioned technical scheme, when voltage amplifier V1's output high level, triode VT1 switches on for relay KM's coil gets electric, and the circuit is simple, convenient maintenance and change.

Optionally, the transformer further comprises a rectifying circuit connected to the secondary side coil of the transformer and the second control circuit, and used for converting the alternating current into direct current; the rectifying circuit comprises a diode VD1, a diode VD2, a diode VD3 and a diode VD 4; the anode of the diode VD1 is connected with one end of the secondary coil of the transformer, and the anode of the diode VD4 is connected with the other end of the secondary coil of the transformer; the cathode of the diode VD1 is connected with the anode of the diode VD2, and the cathode of the diode VD2 is connected with the cathode of the diode VD 3; the cathode of the diode VD3 is connected to the cathode of the diode VD 4.

By adopting the technical scheme, the diode VD1, the diode VD2, the diode VD3 and the diode VD4 are connected with the bridge rectifier circuit to convert the alternating current output by the transformer into the direct current, so that the lighting circuit is convenient to use.

Optionally, the second control circuit comprises an N-channel enhancement mode fet VT2, a photoresistor RL and a resistor R3; the photoresistor RL is a positive illumination intensity coefficient resistor, one end of the photoresistor RL is connected to the cathode of the diode VD2, and the other end of the photoresistor RL is connected to one end of a normally open contact KM-1 of the relay KM; the other end of the normally open contact KM-1 of the relay is connected with the grid of an N-channel enhanced field effect transistor VT2, and the source electrode of the N-channel enhanced field effect transistor VT2 is connected with the anode of a diode VD 1.

By adopting the technical scheme, the photoresistor RL is broken if the resistance value is larger under the condition of daytime or switching on the light in a bedroom, so that the system is not controlled by a human body; the resistance value of the photosensitive resistor RL is smaller under the dark light condition, so that the system can respond to the control of a human body, the probability of system communication under the condition of illumination is reduced, and the electric energy is saved.

Optionally, the delay circuit is connected to the second control circuit, and the delay circuit includes a capacitor C and a variable resistor Rp; one end of the capacitor C is connected to the grid of the N-channel enhancement type field effect transistor VT2, the other end of the capacitor C is connected to the source of the N-channel enhancement type field effect transistor VT2 and then grounded, and the variable resistor Rp is connected with the capacitor C in parallel.

By adopting the technical scheme, when a person leaves, the capacitor C discharges, so that voltage still exists between the grid electrode and the source electrode of the N-channel enhanced field effect transistor VT2, the source electrode and the drain electrode of the N-channel enhanced field effect transistor VT2 are communicated, and the lighting circuit can be continuously conducted for a period of time; through adjusting the resistance of adjustable resistor Rp, can make the voltage change at condenser C both ends, and then make the electric quantity change of storage in the condenser C, and then changed the time of time delay for the people is getting back to the in-process in bed, and lighting circuit can throw light on.

Optionally, the lighting circuit comprises a lighting lamp L1 and a lighting lamp L2 which are connected in series, one end of the lighting lamp L1, which is not connected with the lighting lamp L2, is connected to a connection point of the photoresistor RL and the normally open contact KM-1 of the relay KM, and one end of the lighting lamp L2, which is not connected with the lighting lamp L1, is connected with a drain electrode of the N-channel enhancement type field effect transistor VT 2.

Through adopting above-mentioned technical scheme, lighting circuit switches on, and light L1 and light L2 are lighted and are thrown light on, and light L1 and light L2 are the soft light, can reduce the stimulation to the eyes of people when lighting, make things convenient for the people to see the road clearly.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the detection circuit can detect the approach of a human body and then outputs a detection signal, the detection signal is amplified and then input to the first control circuit, the first control circuit receives the detection signal and then outputs a control signal, the control signal controls the second control circuit to be conducted and outputs a light-up signal, and the lighting circuit responds to the light-up signal to conduct lighting; people can realize illumination without looking for a switch in the dark, so that the probability of human body injury is reduced, and the night is convenient for people;

2. when people leave, the capacitor C is discharged, so that voltage can still exist between the grid electrode and the source electrode of the N-channel enhanced field effect transistor VT2, the source electrode and the drain electrode of the N-channel enhanced field effect transistor VT2 are communicated, and the lighting circuit can be continuously conducted for a period of time; by adjusting the resistance value of the adjustable resistor Rp, the voltage at the two ends of the capacitor C can be changed, so that the lighting change stored in the capacitor C is changed, the time delay is changed, and the lighting circuit can light when a person returns to the bed;

3. the lighting circuit switches on, and light L1 and light L2 are lighted and are thrown light on, and light L1 and light L2 are the soft light for the soft light, can reduce the amazing to the eyes of people when lighting, make things convenient for the people to see the road clearly.

Drawings

FIG. 1 is a schematic diagram of the connection of a detection circuit, a first control circuit and a method circuit in an embodiment of the present application;

fig. 2 is a schematic connection diagram of the transformer, the second control circuit and the lighting circuit in the embodiment of the present application.

Description of reference numerals: 1. a detection circuit; 2. an amplifying circuit; 3. a first control circuit; 4. a transformer; 5. a rectifying circuit; 6. a second control circuit; 7. a delay circuit; 8. an illumination circuit.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses an illumination control system, refer to fig. 1, and the illumination control system comprises a power supply VCC, a transformer 4, a detection circuit 1, an amplification circuit 2, a first control circuit 3, a rectification circuit 5, a second control circuit 6, a delay circuit 7, and an illumination circuit 8. When people get up at night, the human body detection circuit can detect the human body presence by the detection circuit 1, the detection circuit 1 can sense the human body presence and output a detection signal to the amplifying circuit 2, the amplifying circuit 2 amplifies the detection signal and outputs the amplified detection signal to the first control circuit 3, and the first control circuit 3 outputs a control signal to the second control circuit 6 in response to the amplified detection signal; the second control circuit 6 is responsive to the light-up signal and outputs the light-up signal, and the illumination circuit 8 illuminates in response to the light-up signal.

Referring to fig. 1 and 2, the detection circuit 1 includes a pyroelectric human body sensor P1 and a resistor R1, an input terminal of the pyroelectric human body sensor P1 is connected to a power VCC, a ground terminal of the pyroelectric human body sensor P1 is grounded, and an output terminal of the pyroelectric human body sensor P1 is connected to one end of the resistor R1. The amplifying circuit 2 comprises a voltage amplifier V1, a resistor Rf and a resistor R2, wherein the non-inverting input end of the voltage amplifier V1 is connected with one end of the resistor R1 which is not connected with the pyroelectric human body sensor P1, the inverting input end of the voltage amplifier V1 is connected with one end of a resistor R2, and the other end of the resistor R2 is grounded; one end of the resistor Rf is connected to the output terminal of the voltage amplifier V1, and the other end of the resistor Rf is connected to the inverting input terminal of the voltage amplifier V1.

When the pyroelectric human body sensor P1 detects that a human body approaches, the output end of the pyroelectric human body sensor outputs a detection signal, and the resistor R1 plays a role in protecting the voltage amplifier V1 of the circuit and the pyroelectric human body sensor P1; the detection signal is input to the non-inverting input terminal of the voltage amplifier V1, amplified, and then output at the output terminal of the voltage amplifier V1 at a high level. The resistor Rf is a feedback resistor, and the resistor Rf and the resistor R2 together determine the amplification factor of the voltage amplifier V1.

Referring to fig. 1 and 2, the first control circuit 3 includes a transistor VT1 and a relay KM, a base of the transistor VT1 is connected to an output terminal of the voltage amplifier V1, a collector of the transistor VT1 is connected to a power source VCC, an emitter of the transistor VT1 is connected to one end of the relay KM, and the other end of the relay KM is grounded. The output end of the voltage amplifier V1 outputs high level to the base of the triode VT1, and the NPN type triode VT1 is conducted, so that the coil of the electromagnetic relay KM is electrified.

Referring to fig. 1 and 2, the rectifier circuit 5 is a bridge rectifier circuit, and includes a diode VD1, a diode VD2, a diode VD3, and a diode VD4, and the primary coil of the transformer 4 is connected to the commercial power; the anode of the diode VD1 is connected with one end of the secondary coil of the transformer 4, and the anode of the diode VD4 is connected with the other end of the secondary coil of the transformer 4; the cathode of the diode VD1 is connected with the anode of the diode VD2, and the cathode of the diode VD2 is connected with the cathode of the diode VD 3; the cathode of the diode VD3 is connected to the cathode of the diode VD 4. The commercial power is stepped down after passing through the transformer 4 and then is converted into direct current after passing through the rectifying circuit 5.

Referring to fig. 1 and 2, the second control circuit 6 includes an N-channel enhancement type fet VT2, a photoresistor RL and a resistor R3, the photoresistor RL is a positive illumination coefficient resistor, i.e., the resistance of the resistor increases with the increase of illumination intensity, one end of the photoresistor RL is connected to the cathode of the diode VD2, and the other end of the photoresistor RL is connected to one end of the normally open contact KM-1 of the relay KM; the other end of the normally open contact KM-1 of the relay is connected with the grid of an N-channel enhanced field effect transistor VT2, and the source electrode of the N-channel enhanced field effect transistor VT2 is connected with the anode of a diode VD 1.

When the intensity of light is strong, the resistance value of the photoresistor RL is large, so that the second control circuit 6 can not conduct, and when the intensity of light is strong, the resistance value of the photoresistor RL is reduced. At night, the human body is detected by the detection circuit 1, so that a coil of the relay KM in the first control circuit 3 is electrified, then a normally open contact KM-1 of the relay KM is closed, so that voltage exists between a grid electrode and a source electrode of the N-channel enhanced field effect transistor VT2, and the source electrode and the drain electrode of the N-channel enhanced field effect transistor VT2 are conducted, so that the second control circuit 6 is conducted; the resistor R3 is a protection resistor.

Referring to fig. 1 and 2, the lighting circuit 8 includes a lighting lamp L1 and a lighting lamp L2 connected in series, one end of the lighting lamp L1, which is not connected to the lighting lamp L2, is connected to a connection point of the photoresistor RL and the normally open contact KM-1 of the relay KM, and one end of the lighting lamp L2, which is not connected to the lighting lamp L1, is connected to a drain of the N-channel enhancement type field effect transistor VT 2. At night, when the source and the drain of the N-channel enhancement mode fet VT2 are turned on, the lighting circuit 8 is turned on to illuminate. The illuminating lamp L1 and the illuminating lamp L2 are soft lamps and are arranged on one side, close to the ground, of the lower portion of the bed, and when the illuminating lamp L1 and the illuminating lamp L2 are turned on for illumination, soft light is emitted, and stimulation to human eyes is reduced.

Referring to fig. 1 and 2, the delay circuit 7 includes a capacitor C and a variable resistor Rp; one end of the capacitor C is connected to the grid of the N-channel enhancement type field effect transistor VT2, the other end of the capacitor C is connected to the source of the N-channel enhancement type field effect transistor VT2 and then grounded, and the variable resistor Rp is connected with the capacitor C in parallel. The variable resistor Rp has the function of voltage division, when the second control circuit 6 is switched on, the capacitor C is charged, and when the source and the drain of the N-channel enhancement type field effect transistor VT2 are disconnected, the capacitor C starts to discharge, so that voltage still exists between the source and the gate of the N-channel enhancement type field effect transistor VT2, and the lighting circuit 8 can perform lighting; when the electric quantity of the capacitor C is exhausted, the grid electrode of the N-channel enhanced field effect transistor VT2 loses voltage, the source electrode and the drain electrode of the N-channel enhanced field effect transistor VT2 are disconnected, the lighting circuit 8 is disconnected, and the lighting lamp L1 and the lighting lamp L2 are extinguished.

The implementation principle of the illumination control system in the embodiment of the application is as follows: when the light is turned on in the house in the daytime or at night, the resistance value of the photoresistor RL is large, so that the second control circuit 6 cannot be conducted, and the lighting circuit 8 cannot illuminate.

When people sleep with lights turned off at night, the people are in a dark light state at the moment, and the resistance value of the photoresistor RL is low; when people get up at night, the human body approaches to be detected by the pyroelectric human body sensor P1, the output end of the pyroelectric human body sensor P1 outputs generated voltage, and then the generated voltage is amplified by the voltage amplifier V1 to output high level; the base electrode of the high-level output triode VT1 enables the triode VT1 to be conducted, the coil of the relay KM is electrified, then the normally open contact KM-1 of the relay KM is closed, voltage exists between the grid electrode and the source electrode of the N-channel enhanced field effect transistor VT2, the source electrode and the drain electrode of the N-channel enhanced field effect transistor VT2 are conducted, the lighting circuit 8 is conducted, the lighting lamp L1 and the lighting lamp L2 are lightened to illuminate the ground, and meanwhile the capacitor C is charged.

When people leave a bedroom, the pyroelectric human body inductor P1 cannot detect a human body, and no voltage exists at the output end of the pyroelectric human body inductor P1, so that the triode VT1 cannot be conducted, the coil of the relay KM cannot be electrified, and the normally open contact KM-1 of the relay KM is disconnected. At the moment, the capacitor C discharges, voltage exists between the grid electrode and the source electrode of the N-channel enhancement type field effect transistor VT2, and the illuminating lamp L1 and the illuminating lamp L2 are kept on, so that people can conveniently illuminate when getting back to the bed. When the electric quantity stored in the capacitor C is consumed, the voltage between the grid and the source of the N-channel enhanced field effect transistor VT2 is lost, the source and the drain of the N-channel enhanced field effect transistor VT2 are disconnected, and the illuminating lamp L1 and the illuminating lamp L2 are extinguished.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A lighting control system, characterized by: the power supply comprises a power supply VCC and a transformer (4), wherein a primary side coil of the transformer (4) is connected to a mains supply, and a secondary side coil of the transformer (4) is used for providing voltage; further comprising:

the detection circuit (1) is connected with a power supply VCC and used for sensing whether a human body approaches and outputting a detection signal;

an amplification circuit (2) which is connected to the detection circuit (1) and receives the detection signal of the detection circuit (1) and amplifies and outputs the detection signal;

a first control circuit (3) connected to the power supply VCC and the amplification circuit (2) and outputting a control signal in response to the detection signal amplified by the amplification circuit (2);

a second control circuit (6) connected to the secondary side coil of the transformer (4) and responsive to the control signal of the first control circuit (3) and outputting a light-on signal; and

and the lighting circuit (8) is connected to the second control circuit (6) and is used for carrying out lighting indication in response to the lighting signal of the second control circuit (6).

2. A lighting control system as claimed in claim 1, wherein: the detection circuit (1) comprises a pyroelectric human body sensor P1 and a resistor R1, wherein the input end of the pyroelectric human body sensor P1 is connected with a power supply VCC, and the output end of the pyroelectric human body sensor P1 is connected with one end of the resistor R1.

3. A lighting control system according to claim 2, wherein: the amplifying circuit (2) comprises a voltage amplifier V1, a resistor Rf and a resistor R2, wherein the same-direction input end of the voltage amplifier V1 is connected with one end of the resistor R1 which is not connected with the pyroelectric human body inductor P1, the reverse-phase input end of the voltage amplifier V1 is connected with one end of the resistor R2, and the other end of the resistor R2 is grounded; one end of the resistor Rf is connected to the output terminal of the voltage amplifier V1, and the other end of the resistor Rf is connected to the inverting input terminal of the voltage amplifier V1.

4. A lighting control system according to claim 3, wherein: the first control circuit (3) comprises an NPN type triode VT1 and a relay KM, wherein the base electrode of the triode VT1 is connected to the output end of the voltage amplifier V1, the emitting electrode of the triode VT1 is grounded, and the collecting electrode of the triode VT is connected with a power supply VCC.

5. A lighting control system as claimed in claim 1, wherein: the transformer (4) is connected with a secondary side coil of the transformer and a second control circuit (6) to convert alternating current into direct current; the rectifying circuit (5) comprises a diode VD1, a diode VD2, a diode VD3 and a diode VD 4; the anode of the diode VD1 is connected with one end of the secondary coil of the transformer (4), and the anode of the diode VD4 is connected with the other end of the secondary coil of the transformer (4); the cathode of the diode VD1 is connected with the anode of the diode VD2, and the cathode of the diode VD2 is connected with the cathode of the diode VD 3; the cathode of the diode VD3 is connected to the cathode of the diode VD 4.

6. A lighting control system according to claim 5, wherein: the second control circuit (6) comprises an N-channel enhancement type field effect transistor VT2, a photoresistor RL and a resistor R3; the photoresistor RL is a positive illumination intensity coefficient resistor, one end of the photoresistor RL is connected to the cathode of the diode VD2, and the other end of the photoresistor RL is connected to one end of a normally open contact KM-1 of the relay KM; the other end of the normally open contact KM-1 of the relay is connected with the grid of an N-channel enhanced field effect transistor VT2, and the source electrode of the N-channel enhanced field effect transistor VT2 is connected with the anode of a diode VD 1.

7. A lighting control system according to claim 6, wherein: the delay circuit (7) is connected to the second control circuit (6), and the delay circuit (7) comprises a capacitor C and a variable resistor Rp; one end of the capacitor C is connected to the grid of the N-channel enhancement type field effect transistor VT2, the other end of the capacitor C is connected to the source of the N-channel enhancement type field effect transistor VT2 and then grounded, and the variable resistor Rp is connected with the capacitor C in parallel.

8. A lighting control system according to claim 5, wherein: the lighting circuit (8) comprises a lighting lamp L1 and a lighting lamp L2 which are connected in series, one end, which is not connected with the lighting lamp L2, of the lighting lamp L1 is connected to the connection position of the photosensitive resistor RL and the normally open contact KM-1 of the relay KM, one end, which is not connected with the lighting lamp L1, of the lighting lamp L2 is connected with the drain electrode of the N-channel enhanced field effect transistor VT2, and the lighting lamp L1 and the lighting lamp L2 are soft lamps.