CN207369377U - A kind of body induction circuit - Google Patents
A kind of body induction circuit Download PDFInfo
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- CN207369377U CN207369377U CN201721105444.7U CN201721105444U CN207369377U CN 207369377 U CN207369377 U CN 207369377U CN 201721105444 U CN201721105444 U CN 201721105444U CN 207369377 U CN207369377 U CN 207369377U
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Abstract
It the utility model is related to a kind of body induction circuit, including infrared induction circuit, amplification driving circuit, filter circuit of pressure-stabilizing and isolated drive circuit, the output terminal of infrared induction circuit and the input terminal of amplification driving circuit connect, the input terminal of the output terminal of amplification driving circuit and isolated drive circuit connects, and the power input of the output terminal of filter circuit of pressure-stabilizing respectively with infrared induction circuit, amplification driving circuit and isolated drive circuit is connected.The body induction circuit of the utility model, exist by infrared induction circuit inductance human body, and generate inductive signal, trigger signal is exported after amplifying via amplification driving circuit, control isolated drive circuit conducting, so as to accurately control external circuit break-make, overcoming to open by acoustic control in the prior art controls external circuit to cause the error starting problem for external circuit easily occur, realize human body automatic sensing, and the break-make of the output control external circuit according to sensing, it can be applied in various human body induction control circuits.
Description
Technical field
It the utility model is related to electronic circuit technology field, more particularly to a kind of body induction circuit.
Background technology
The automatic controller for illumination used now, is with controlled by sound and light light switch, when light illumination is less than setting threshold
During value, if human body makes a sound, lighting system is opened by sound, then time-delay closing, existing this Lighting control
The advantages of device, is the reduction of personnel's operation, lighting system is fully used.But the drawback is that there is the environment of noise
Under, voice activated control can frequent error starting, be easy to cause the working status of control device frequent switching lighting system, so can be significantly
Shorten the service life of lighting system, and accelerate the damage of lighting system.Especially in more complicated environment, have very much
Equipment is being run, and is controlled lighting system with controlled by sound and light device, is tended not to achieve the desired results.
The content of the invention
Technical problem to be solved in the utility model is in view of the above shortcomings of the prior art, there is provided a kind of human body sensing
Circuit.
The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of body induction circuit, including infrared sense
Answer circuit, amplification driving circuit, filter circuit of pressure-stabilizing and isolated drive circuit, the output terminal of the infrared induction circuit with it is described
The input terminal connection of amplification driving circuit, the output terminal of the amplification driving circuit and the input terminal of the isolated drive circuit connect
Connect, the output terminal of the filter circuit of pressure-stabilizing respectively with infrared induction circuit, amplification driving circuit and the isolated drive circuit
Power input connection.
The beneficial effects of the utility model are：The body induction circuit of the utility model, passes through infrared induction circuit inductance
Human body exists, and generates inductive signal, and trigger signal is exported after amplifying via the amplification driving circuit, controls the isolation to drive
Dynamic circuit turn-on, so as to accurately control external circuit break-make, overcomes and opens control external circuit by acoustic control in the prior art and lead
Easily there is the error starting problem of external circuit in cause, realizes human body automatic sensing, and according to the output control external electrical of sensing
The break-make on road, can be applied in various human body induction control circuits.
Based on the above technical solutions, the utility model can also do following improvement：
Further：The infrared induction circuit includes resistance R3, capacitance C3, capacitance C5 and rpyroelectric infrared detection chip
IC1, the capacitance C5 are connected between the output terminal and ground of the filter circuit of pressure-stabilizing, the rpyroelectric infrared detection chip
The power input of IC1 is electrically connected with the output terminal of the filter circuit of pressure-stabilizing, and ground terminal ground connection, output terminal is with passing through the electricity
Resistance R3 is connected with the signal input part of the amplification driving circuit, and the signal input part of the amplification driving circuit also passes through institute
State capacitance C3 ground connection.
The above-mentioned further beneficial effect of scheme is：Can be defeated to the filter circuit of pressure-stabilizing (3) by the capacitance C5
The voltage gone out is filtered, and by the rpyroelectric infrared detection chip IC1 accurate sensing human body can be used to exist, and is generated
Inductive signal, exports to the amplification driving circuit after capacitance C3 filtering.
Further：The amplification driving circuit include triode V1, triode V2, diode VD2, resistance R4, resistance R5,
Resistance R7, capacitance C4 and driving chip IC2, the base stage of the triode V2 are connected with the output terminal of the infrared induction circuit,
Emitter is grounded, and collector is connected by the resistance R4 with the output terminal of the filter circuit of pressure-stabilizing, collector also with it is described
The base stage connection of triode V1, the emitter of the triode V1 are connected with the output terminal of the filter circuit of pressure-stabilizing, collector
It is grounded by the resistance R7, collector is also connected with the clear terminal and power end of the driving chip IC2 respectively, the driving
By the resistance R5 connections between the low triggering end of chip IC 2 and the power end, the cathode of the diode VD2 with it is described
The low triggering end connection of driving chip IC2, anode are connected with the power end of the driving chip IC2, the driving chip IC2's
High-triggering end is connected with low triggering end, and the two is connected by the capacitance C4 with ground terminal, ground terminal ground connection, output terminal with
The isolated drive circuit connection.
The above-mentioned further beneficial effect of scheme is：By the triode V2 and triode V1 by the inductive signal into
Row two-stage is amplified, and is then exported amplified inductive signal to driving chip IC2, the driving chip IC2 is according to the sense
The size of induction signal carrys out output drive signal.
Further：The isolated drive circuit includes solenoid valve YV, resistance R6 and photoelectrical coupler chip VLC, the light
The cathode of electric coupler chip VLC is connected with the output terminal of the amplification driving circuit, and anode is grounded by the resistance R6, and two
A output terminal is connected with the filter circuit of pressure-stabilizing respectively.
The above-mentioned further beneficial effect of scheme is：According to the drive signal control that the amplification driving circuit exports
The turn-on and turn-off of photoelectrical coupler chip VLC, so as to control the conducting of the solenoid valve YV to cross shut-off, realize external circuit
Accurately automatically control.
Further：The filter circuit of pressure-stabilizing includes resistance R1, capacitance C1, capacitance C2, zener diode VS and diode
VD1, one end of the capacitance C1 are connected with external power supply cathode, and the other end is connected with the cathode of the diode VD1, and described two
The anode of pole pipe VD1 is connected with the infrared induction circuit and amplification driving circuit respectively as an output terminal, the resistance
R1 is connected in parallel on the capacitance C1 both ends, the plus earth of the zener diode VS, and the cathode of anode and the diode VD1 connects
Connect, the capacitance C2 is connected between the anode and ground of the diode VD1.
The above-mentioned further beneficial effect of scheme is：The voltage signal provided by the capacitance C1 external power supply carries out
Filtering, by the zener diode VS can stablize the filter circuit of pressure-stabilizing (3) output to the infrared induction circuit and
The voltage of amplification driving circuit, avoids the voltage fluctuation of external power supply from influencing the sensitivity of whole sensor circuit, passes through described two
Pole pipe CD1 carries out rectification processing to filtered voltage, then carries out secondary filtering by the capacitance C2 again, improves the steady of signal
It is qualitative.
Brief description of the drawings
Fig. 1 is the body induction circuit figure of the utility model.
In attached drawing, parts list represented by the reference numerals is as follows：
1st, infrared induction circuit, 2, amplification driving circuit, 3, filter circuit of pressure-stabilizing, 4, isolated drive circuit.
Embodiment
The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
As shown in Figure 1, a kind of body induction circuit, including infrared induction circuit 1, amplification driving circuit 2, voltage regulation filtering electricity
Road 3 and isolated drive circuit 4, the output terminal of the infrared induction circuit 1 are connected with the input terminal of the amplification driving circuit 2,
The output terminal of the amplification driving circuit 2 is connected with the input terminal of the isolated drive circuit 4, the filter circuit of pressure-stabilizing 3
Power input of the output terminal respectively with the infrared induction circuit 1, amplification driving circuit 2 and isolated drive circuit 4 is connected.
A kind of body induction circuit of the utility model, exists by infrared induction circuit inductance human body, and generates sensing
Signal, trigger signal is exported after amplifying via the amplification driving circuit, controls the isolated drive circuit to turn on, so that accurately
External circuit break-make is controlled, stable voltage signal is provided by filter circuit of pressure-stabilizing, improves the sensitivity of sensor circuit, gram
Having taken to open by acoustic control in the prior art controls external circuit to cause the error starting problem for external circuit easily occur, realizes people
Body automatic sensing, according to the break-make of the output control external circuit of sensing, can be applied in various human body induction control circuits.
In the present embodiment, the infrared induction circuit 1 includes resistance R3, capacitance C3, capacitance C5 and rpyroelectric infrared detection
Chip IC 1, the capacitance C5 are connected between the output terminal and ground of the filter circuit of pressure-stabilizing 3, the rpyroelectric infrared detection
The power input of chip IC 1 is electrically connected with the output terminal of the filter circuit of pressure-stabilizing 3, and ground terminal ground connection, output terminal is with passing through
The resistance R3 is connected with the signal input part of the amplification driving circuit 2, and the signal input part of the amplification driving circuit 2
Also it is grounded by the capacitance C3.It is filtered by the capacitance C5 voltages that can be exported to the filter circuit of pressure-stabilizing 3,
And by the rpyroelectric infrared detection chip IC1 accurate sensing human body can be used to exist, and inductive signal is generated, by described
Exported after capacitance C3 filtering to the amplification driving circuit 2.
In practice, the rpyroelectric infrared detection chip IC1 uses model SD02 type pyroelectric infrared sensors, or
Using the pyroelectric infrared sensor of model P228 or LN-206.
In the present embodiment, the amplification driving circuit 2 includes triode V1, triode V2, diode VD2, resistance R4, electricity
Hinder R5, resistance R7, capacitance C4 and driving chip IC2, the base stage of the triode V2 and the output terminal of the infrared induction circuit 1
Connection, emitter ground connection, collector are connected by the resistance R4 with the output terminal of the filter circuit of pressure-stabilizing 3, and collector is also
It is connected with the base stage of the triode V1, the emitter of the triode V1 is connected with the output terminal of the filter circuit of pressure-stabilizing 3,
Collector is grounded by the resistance R7, and collector is also connected with the clear terminal and power end of the driving chip IC2 respectively, institute
State between the low triggering end of driving chip IC2 and the power end by the resistance R5 connections, the cathode of the diode VD2
It is connected with the low triggering end of the driving chip IC2, anode is connected with the power end of the driving chip IC2, the driving core
The high-triggering end of piece IC2 is connected with low triggering end, and the two is connected by the capacitance C4 with ground terminal, ground terminal ground connection,
Output terminal is connected with the isolated drive circuit 4.The inductive signal is carried out two by the triode V2 and triode V1
Level amplification, then amplified inductive signal is exported to driving chip IC2, the driving chip IC2 believed according to the sensing
Number size carry out output drive signal.
In practice, the triode V1 selects model 9013 or the NPN transistor of 3DG6, the triode V2 to use type
Number PNP transistor for being S8055, the diode VD2 select the switching diode of model IN4148, driving chip IC2 choosings
The trigger for being NE555 with signal.
In the present embodiment, the isolated drive circuit 4 includes solenoid valve YV, resistance R6 and photoelectrical coupler chip VLC, institute
The cathode for stating photoelectrical coupler chip VLC is connected with the output terminal of the amplification driving circuit 2, and anode is connect by the resistance R6
Ground, two output terminals are connected with the filter circuit of pressure-stabilizing 3 respectively.The drive signal exported according to the amplification driving circuit 2
The turn-on and turn-off of the photoelectrical coupler chip VLC are controlled, so as to control the conducting of the solenoid valve YV to cross shut-off, are realized outer
The accurate of portion's circuit automatically controls.
In practice, the photoelectrical coupler chip VLC uses the photo-coupler of model Moc3041.
In the present embodiment, the filter circuit of pressure-stabilizing 3 includes resistance R1, capacitance C1, capacitance C2, zener diode VS and two
Pole pipe VD1, one end of the capacitance C1 are connected with external power supply cathode, and the other end is connected with the cathode of the diode VD1, institute
The anode for stating diode VD1 is connected with the infrared induction circuit 1 and amplification driving circuit 2 respectively as an output terminal, institute
State resistance R1 and be connected in parallel on the capacitance C1 both ends, the plus earth of the zener diode VS, anode is with the diode VD1's
Cathode connects, and the capacitance C2 is connected between the anode and ground of the diode VD1.By the capacitance C1 to external power supply
The voltage signal of offer is filtered, and can stablize the filter circuit of pressure-stabilizing 3 by the zener diode VS exports to institute
The voltage of infrared induction circuit 1 and amplification driving circuit 2 is stated, avoiding the voltage fluctuation of external power supply influences whole sensor circuit
Sensitivity, rectification processing is carried out by the diode CD1 to filtered voltage, is then carried out again by the capacitance C2 secondary
Filtering, improves the stability of signal.
In practice, the zener diode VS uses the silicon voltage regulator diode of 1W, 6.2V, such as IN4735, two pole
Pipe VD1 uses the silicon rectifier diode of model IN4007.
The body induction circuit of the utility model, can prohibit system by the solenoid valve YV and exterior lighting system OR gate
A series of external control circuit connections such as system, and its conscientious break-make is controlled, to realize corresponding function, can be applied to wider
In general field, do not enumerate here.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within new spirit and principle, any modification, equivalent replacement, improvement and so on, should be included in the guarantor of the utility model
Within the scope of shield.
Claims (5)
- A kind of 1. body induction circuit, it is characterised in that:Including infrared induction circuit (1), amplification driving circuit (2), voltage stabilizing filter Wave circuit (3) and isolated drive circuit (4), output terminal and the amplification driving circuit (2) of the infrared induction circuit (1) Input terminal connects, and the output terminal of the amplification driving circuit (2) is connected with the input terminal of the isolated drive circuit (4), described The output terminal of filter circuit of pressure-stabilizing (3) is electric with the infrared induction circuit (1), amplification driving circuit (2) and isolation drive respectively The power input connection on road (4).
- 2. body induction circuit according to claim 1, it is characterised in that:The infrared induction circuit (1) includes resistance R3, capacitance C3, capacitance C5 and rpyroelectric infrared detection chip IC1, the capacitance C5 are connected to the filter circuit of pressure-stabilizing (3) Between output terminal and ground, the power input of the rpyroelectric infrared detection chip IC1 is defeated with the filter circuit of pressure-stabilizing (3) Outlet is electrically connected, ground terminal ground connection, output terminal and the signal input part by the resistance R3 and the amplification driving circuit (2) Connection, and the signal input part of the amplification driving circuit (2) is also grounded by the capacitance C3.
- 3. body induction circuit according to claim 1, it is characterised in that:The amplification driving circuit (2) includes three poles Pipe V1, triode V2, diode VD2, resistance R4, resistance R5, resistance R7, capacitance C4 and driving chip IC2, the triode V2 Base stage be connected with the output terminal of the infrared induction circuit (1), emitter ground connection, collector by the resistance R4 with it is described The output terminal connection of filter circuit of pressure-stabilizing (3), base stage of the collector also with the triode V1 are connected, the hair of the triode V1 Emitter-base bandgap grading is connected with the output terminal of the filter circuit of pressure-stabilizing (3), and collector is grounded by the resistance R7, collector also respectively with The clear terminal of the driving chip IC2 is connected with power end, between the low triggering end and the power end of the driving chip IC2 By the resistance R5 connections, the cathode of the diode VD2 is connected with the low triggering end of the driving chip IC2, anode with The power end connection of the driving chip IC2, the high-triggering end of the driving chip IC2 is connected with low triggering end, and the two is equal It is connected by the capacitance C4 with ground terminal, ground terminal ground connection, output terminal is connected with the isolated drive circuit (4).
- 4. according to claim 1-3 any one of them body induction circuits, it is characterised in that:The isolated drive circuit (4) Cathode and the amplification including solenoid valve YV, resistance R6 and photoelectrical coupler chip VLC, the photoelectrical coupler chip VLC The output terminal connection of drive circuit (2), anode are grounded by the resistance R6, and two output terminals are electric with the voltage regulation filtering respectively Road (3) connects.
- 5. according to claim 1-3 any one of them body induction circuits, it is characterised in that:The filter circuit of pressure-stabilizing (3) One end and external power supply including resistance R1, capacitance C1, capacitance C2, zener diode VS and diode VD1, the capacitance C1 are just Pole connects, and the other end is connected with the cathode of the diode VD1, and the anode of the diode VD1 is distinguished as an output terminal It is connected with the infrared induction circuit (1) and amplification driving circuit (2), the resistance R1 is connected in parallel on the capacitance C1 both ends, institute The plus earth of zener diode VS is stated, anode is connected with the cathode of the diode VD1, and the capacitance C2 is connected to described two Between the anode and ground of pole pipe VD1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721105444.7U CN207369377U (en) | 2017-08-30 | 2017-08-30 | A kind of body induction circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721105444.7U CN207369377U (en) | 2017-08-30 | 2017-08-30 | A kind of body induction circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207369377U true CN207369377U (en) | 2018-05-15 |
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ID=62351059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721105444.7U Expired - Fee Related CN207369377U (en) | 2017-08-30 | 2017-08-30 | A kind of body induction circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207369377U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775962A (en) * | 2018-07-02 | 2018-11-09 | 昆明理工大学 | A kind of infrared temperature control stand fan |
| CN108963411A (en) * | 2018-07-02 | 2018-12-07 | 昆明理工大学 | A kind of indoor ceiling aerial based on intelligent lighting |
-
2017
- 2017-08-30 CN CN201721105444.7U patent/CN207369377U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775962A (en) * | 2018-07-02 | 2018-11-09 | 昆明理工大学 | A kind of infrared temperature control stand fan |
| CN108963411A (en) * | 2018-07-02 | 2018-12-07 | 昆明理工大学 | A kind of indoor ceiling aerial based on intelligent lighting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180515 Termination date: 20180830 |