CN105188222B - A kind of ON-OFF control circuit - Google Patents
A kind of ON-OFF control circuit Download PDFInfo
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- CN105188222B CN105188222B CN201510599321.2A CN201510599321A CN105188222B CN 105188222 B CN105188222 B CN 105188222B CN 201510599321 A CN201510599321 A CN 201510599321A CN 105188222 B CN105188222 B CN 105188222B
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Abstract
The invention discloses a kind of ON-OFF control circuits, including microwave sensing module, Doppler signal is obtained for emitting microwave signal and receiving the microwave signal reflected, a level signal corresponding with human motion will be exported after Doppler signal drive amplification to signal comparison module；Signal comparison module for whether within a preset range to judge the voltage value of microwave sensing module output signal, and exports different control signals to illumination control module according to comparison result；Illumination control module, control signal and illumination condition for being exported according to signal comparison module control the switch of electrical appliance circuit.ON-OFF control circuit operation principle provided by the invention is simple, is easy to implement and relevant debugging efforts, control range bigger, and the electrical appliance of control may be mounted at the larger place of area, and have stronger anti-electromagnetic interference capability.
Description
Technical field
The present invention relates to circuit design field, more particularly to a kind of ON-OFF control circuit.
Background technology
With the continuous development of society, people's is usually movable more and more abundant, and scope of activities and activity time are increasingly
Extensively, it has been not limited to activity on daytime, evening events are also more and more.However, evening events then need to illuminate, traditional control
The opening mode of illumination is mostly to be controlled by mechanical switch, and different places then needs different mechanical switch types, such as
Corridor, public lavatory, square or corridor etc..The selection of mechanical switch is not only cumbersome for installation, and needs artificial operation and control of going, past
Toward due to forgetting to close, control mode is improper etc. that electricity consumption is caused to waste, control the electrical appliances such as electric light with being unable to reach automated intelligent
Be turned on or off.
Currently there are also the ON-OFF control circuits for having automatic control function, but these ON-OFF control circuits are mostly logical
It crosses this kind of time base circuit chip of 555 timers such as and realizes switch control.This kind of chip the problem is that：It is quick on the draw, easily
By extraneous strong electromagnetic, such as when having near ON-OFF control circuit motor work, the normal of ON-OFF control circuit can be interfered
Work, and its integrated circuit operation principle is complicated, is not easy to debug.
Invention content
The present invention provides a kind of ON-OFF control circuits, can intelligently control electrical appliance and be not easy dry by external electromagnetic
It disturbs.
A kind of ON-OFF control circuit provided by the invention, including：Microwave sensing module, signal comparison module, illumination control
Module；
The microwave sensing module obtains Doppler's letter for emitting microwave signal and receiving the microwave signal reflected
Number, one will be exported after the Doppler signal drive amplification compared with human motion corresponding level signal to the signal
Module；
The signal comparison module includes first comparator and the second comparator, and the first comparator and described second are compared
It is arranged in parallel compared with device, and is connected respectively with the output end of the microwave sensing module, for judging the microwave sensing module
Whether within a preset range the voltage value of output signal, and exports different control signals to the illumination according to comparison result
Control module；
The illumination control module, control signal and illumination condition for being exported according to the signal comparison module control
The switch of electrical appliance circuit.
Wherein, the microwave sensing module includes：Doppler sensor, oscillating capacitance, antenna, amplifier, first resistor,
Second resistance；
The first pin and the second pin of the doppler sensor connect the antenna, third pin and the 5th pin difference
The both ends of the oscillating capacitance are connect, the 4th pin meets power supply VCC, the 7th pin ground connection, and the 6th pin connects the first resistor one
End；
The positive input of the amplifier terminates the first resistor and is not connect with the 6th pin of the doppler sensor
One end, negative input terminates described second resistance one end, and output passes after terminating the second resistance other end as the microwave
Feel the output end of module.
Wherein, the signal comparison module further includes：3rd resistor, the 4th resistance, calibration swept resistance；
The 3rd resistor, calibration swept resistance and the 4th resistance be sequentially connected in series, the 3rd resistor not with other elements
A connected termination power VCC；One end ground connection that 4th resistance is not connected with other elements；
The positive input terminal of the first comparator is connected between the 4th resistance and the calibration swept resistance, described
The negative input end of second comparator is connected between the calibration swept resistance and the 3rd resistor；
The negative input end of the first comparator and the positive input terminal of second comparator are sensed with the microwave respectively
The output end of module is connected, and the output end of the output end of the first comparator and second comparator is the signal ratio
Compared with the two-way output end of module.
Wherein, the illumination control module includes：It is switching tube, the first field-effect tube, the second field-effect tube, diode, double
To thyristor, the 5th resistance, photo resistance；
The grid of first field-effect tube is connect with the output end of signal comparison module, and source electrode is connecing the diode just
Pole, drain electrode meet power supply VCC and described 5th resistance one end respectively；
The grid of second field-effect tube is connect with the output end of signal comparison module, the leakage of source electrode and the switching tube
Pole is connected, and drain electrode meets power supply VCC；
The cathode of the diode is connected between the drain electrode of the grid and switching tube of second field-effect tube；It is described to open
The grid for closing pipe is connected to by the 5th resistance between the drain electrode and power supply VCC of first field-effect tube, the switch
The source electrode of pipe is connected with the gate leve of the bidirectional thyristor；
One end of the photo resistance is connected between the grid of the switching tube and the 5th resistance, another termination
Ground；
Two main electrodes of the bidirectional thyristor are connected in electrical appliance circuit, for controlling opening for electrical appliance circuit
It closes.
Wherein, the electrical appliance is electric light.When daytime, the resistance value of the photo resistance is small, the switching tube cut-off, described
Bidirectional thyristor ends, and the electric light does not work always.When night, the resistance value of the photo resistance is big, the switching tube conducting,
When first field-effect tube or second field-effect tube are connected, the bidirectional thyristor conducting, the electric light is lighted；
When first field-effect tube and second field-effect tube are all ended, the bidirectional thyristor cut-off, the electric light does not work.
Wherein, the on or off of first field-effect tube and second field-effect tube, is sensed by the microwave
The voltage value of module output signal and the comparison result of preset range control, and the preset range passes through the calibration swept resistance
Electric resistance partial pressure obtain.
Wherein, the doppler sensor has been internally integrated oscillation module, transmitting module, amplification module and detection module.
Wherein, the doppler sensor generates the microwave sounding area of a solid space by the antenna, for feeling
Know the entrance of human body, movement and leaves.
The beneficial effects of the invention are as follows：ON-OFF control circuit provided by the invention emits microwave by microwave sensing module
Signal simultaneously receives the microwave signal that is reflected and obtains Doppler signal, will be exported after the Doppler signal drive amplification one with
The corresponding level signal of human motion can be based on microwave induced human motion, and since microwave passes to signal comparison module
Feeling module has larger microwave radiation area, therefore induction range is also larger；Judge that microwave senses by signal comparison module
Whether within a preset range the voltage value of module output signal, has stronger anti-electromagnetic interference capability, and tie according to comparing
Fruit exports different control signals to illumination control module, and then exported according to signal comparison module by illumination control module
The switch for controlling signal and illumination condition control electrical appliance circuit, realizes the dual intelligent control of human motion and illumination condition.
Therefore the ON-OFF control circuit of the present invention can intelligently control electrical appliance and solve the problems, such as easily by outside electromagnetic interference, tool
There is circuit operation principle simple, is easy to implement and the advantages of relevant debugging efforts.If the electrical appliance controlled is electric light, can
Realize the intelligent control of " day bright light is gone out, and people Lai Dengliang turns off the light when you leave ", microwave control range is up to 100 ㎡, the electricity consumption of control
Device may be mounted at the larger public place of toilet, warehouse homalographic.
Description of the drawings
Fig. 1 is system structure diagram provided in an embodiment of the present invention；
Fig. 2 is circuit diagram provided in an embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is system structure diagram provided in an embodiment of the present invention, and Fig. 2 is circuit diagram provided in an embodiment of the present invention.
As depicted in figs. 1 and 2, the present invention provides ON-OFF control circuit, including：Microwave sensing module 100, signal comparison module
110, illumination control module 120；
The microwave sensing module 100 obtains Doppler for emitting microwave signal and receiving the microwave signal reflected
Signal will export a level signal corresponding with human motion to the signal ratio after the Doppler signal drive amplification
Compared with module 110；
The signal comparison module 110 includes first comparator U2 (Fig. 2 shows) and the second comparator U3 (Fig. 2 shows), described
First comparator U2 and the first comparator U3 are arranged in parallel, and the output end phase with the microwave sensing module 100 respectively
Connection, for whether within a preset range to judge the voltage value of 100 output signal of microwave sensing module, and according to comparing
As a result different control signals is exported to the illumination control module 120；
The illumination control module 120, the control signal for being exported according to the signal comparison module 110 and illumination item
Part controls the switch of electrical appliance circuit.
Circuit provided in an embodiment of the present invention is illustrated below.As shown in Fig. 2, the microwave sensing module 100
Including：Doppler sensor U4, oscillating capacitance C1, antenna W, first resistor R1, amplifier U1, second resistance R2.It is described how general
The pin 1,2 for strangling sensor U4 meets the antenna W, and pin 3,5 connects the both ends of the oscillating capacitance C1 respectively, and pin 4 connects power supply
VCC, pin 7 are grounded, and pin 6 connects the one end the first resistor R1, and first resistor R1 is used for current limliting.The amplifier U1 is just
It inputs and terminates one end that the first resistor R1 is not connect with the pin 6 of the doppler sensor U4, described in negative input termination
The one end second resistance R2 exports the output end as the microwave sensing module 100 after terminating the second resistance R2 other ends.
The signal comparison module 110 further includes：3rd resistor R3, the 4th resistance R5, calibration swept resistance R4；Wherein
Three resistance R3 and the 4th resistance R5 are for dividing.
The 3rd resistor R3, calibration swept resistance R4 and the 4th resistance R5 be sequentially connected in series, the 3rd resistor R3 not with
The connected termination power VCC of other elements；One end ground connection that the 4th resistance R5 is not connected with other elements；
The positive input terminal of the first comparator U2 be connected to the 4th resistance R5 and calibration swept resistance R4 it
Between, the negative input end of the second comparator U3 is connected between the calibration swept resistance R4 and the 3rd resistor R3；
The positive input terminal of the negative input end of the first comparator U2 and the second comparator U3 respectively with the microwave
The output end of sensing module is connected, and the output end of the output end of the first comparator U2 and the second comparator U3 are institute
State the two-way output end of signal comparison module.
The illumination control module 120 includes：Switching tube Q1, the first field-effect tube Q2, the second field-effect tube Q3, diode
D1, bidirectional thyristor D2, the 5th resistance R9, photo resistance RG；Wherein the 5th resistance R9 is for dividing.
The grid of the first field-effect tube Q2 is connect with the output end of signal comparison module, and source electrode meets the diode D1
Anode, drain electrode meet power supply VCC and the one end the 5th resistance R9 respectively；
The grid of the second field-effect tube Q3 is connect with the output end of signal comparison module, source electrode and the switching tube Q1
Drain electrode be connected, drain electrode meet power supply VCC；
The cathode of the diode D1 is connected between the grid and the drain electrode of switching tube Q1 of the second field-effect tube Q3；
The grid of the switching tube Q1 by the 5th resistance R9 be connected to the drain electrode of the first field-effect tube Q2 and power supply VCC it
Between, the source electrode of the switching tube Q1 is connected with the gate leve of the bidirectional thyristor D2；
One end of the photo resistance RG is connected between the grid of the switching tube Q1 and the 5th resistance R9, another
End ground connection；
Two main electrodes of the bidirectional thyristor D2 are connected in electrical appliance circuit, for controlling opening for electrical appliance circuit
It closes.
In preferred circuit, the illumination control module 120 further includes：Current-limiting resistance R6, R7, pull down resistor R8, R10；Institute
Current-limiting resistance R6 is stated to connect between the output end of the first amplifier U2 and the grid of the second field-effect tube Q3；The current limliting
Resistance R7 connects between the output end of the second amplifier U3 and the grid of the first field-effect tube Q2；The pull down resistor R8
One termination the second field-effect tube Q3 source electrodes, other end ground connection；The pull down resistor R10 mono- terminate the switching tube Q1 with it is double
To between thyristor D2, the other end is grounded.
Wherein, the electrical appliance is electric light EL.
When there is illumination on daytime, photo resistance RG resistance values are by the very little of change, the pressure drop at both ends also very little, i.e. switching tube Q1's
The gate pole of grid G terminal voltage very little, switching tube Q1 cut-offs, thyristor D2 is pulled to low level, and thyristor D2 ends, regardless of whether
Someone enters microwave sounding area, and electric light EL will not be lighted.
Photo resistance RG resistance values are larger when night, and partial pressure makes the grid G end of switching tube Q1 be high level, and VGS is more than it
Conducting voltage, switching tube Q1 conductings；When powering on normal work, the microwave signal that the oscillator in doppler sensor U4 generates passes through
Internal launcher is emitted to space by pin 1,2 by antenna W, generates a solid space microwave sounding area.
When nobody enters effective detecting area, the output voltage of six pins of doppler sensor U4 is 6V, passes through resistance
Partial pressure obtains specific V1 and V2 values so that the voltage swing is located among V1 and V2 voltage value sizes at this time, comparator U3, U2
Low level is exported, the cut-off of field-effect tube Q2, Q3, thyristor D2 also can be due to gate pole be without trigger voltage by headlamp EL is not
It is bright.
When someone enters detecting area and moves, frequency is will produce between the transmitting signal and reflected signal of antenna W
Rate deviates, and faint frequency shift signal is after the detector processes in doppler sensor U4, and the Doppler signal of acquisition is again through more
The general amplification for strangling amplifying circuit in sensor U4,6 pins of doppler sensor U4 can export one it is opposite with human motion
The DC level signal answered, i.e. 6 pin voltages will be higher or relatively low in 6V.This voltage V0 is when higher than V1 or less than V2, and first
Comparator U2 or the second comparator U3 export high level, to make the first field-effect tube Q2 or the second field-effect tube Q3 conductings,
Then thyristor D2 gate poles are lighted by high level triggering and conducting, headlamp EL.
After people leaves detecting area, the output voltage of 6 pins of doppler sensor U4 becomes 6V again, at this time the voltage
Size is located among V1 and V2 voltage value sizes, and comparator U3, U2 export low level, then field-effect tube Q2, Q3 is ended, brilliant lock
Pipe D2 also can be due to gate pole be without trigger voltage by headlamp EL does not work.To realize, " day bright light is gone out, and people Lai Dengliang, people walks
Lamp goes out " intelligent light switch control circuit.The signal comparison module uses voltage comparator, has stronger electromagnetism interference
Ability is not easy by external environmental interference.
In conclusion a kind of ON-OFF control circuit provided by the invention has below beneficial to effect compared with prior art
Fruit：
1, the present invention realizes switch control using combinations such as doppler sensor, amplifier, photo resistance and field-effect tube
Circuit, operation principle is simple, of low cost, overcomes the shortcomings that circuit operation principle complexity is not easy to debug in the prior art.
2, compared with the time base circuit chip that the prior art uses, the present invention utilizes the Doppler of microwave radiation area bigger
Sensing module, the microwave radiation area with bigger, control range bigger, up to 100m2, control electrical appliance can install
In the public place that area is larger, such as toilet, warehouse.
3, microwave control section uses voltage comparator, has stronger anti-electromagnetic interference capability, is not easy by external environment
Strong electromagnetic.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (9)
1. a kind of ON-OFF control circuit, which is characterized in that the ON-OFF control circuit includes：Microwave sensing module, signal compare
Module, illumination control module；
The microwave sensing module obtains Doppler signal for emitting microwave signal and receiving the microwave signal reflected, will
A level signal corresponding with human motion is exported after the Doppler signal drive amplification to the signal comparison module；
The signal comparison module includes first comparator and the second comparator, the first comparator and second comparator
It is arranged in parallel, and is connected respectively with the output end of the microwave sensing module, the output end of the first comparator and described
The output end of second comparator is the two-way output end of the signal comparison module, for judging the microwave sensing module output
Within a preset range whether the voltage value of signal, and export different control signals to the illumination according to comparison result and control
Module；
The illumination control module, control signal and illumination condition for being exported according to the signal comparison module control electricity consumption
The switch of device circuit；
The illumination control module includes：Switching tube, the first field-effect tube, the second field-effect tube, diode, bidirectional thyristor,
5th resistance, photo resistance；The grid of first field-effect tube and the output end of first comparator connect, and source electrode connects described two
Pole pipe anode, drain electrode meet power supply VCC and described 5th resistance one end respectively；The grid of second field-effect tube is compared with second
The output end of device connects, and source electrode is connected with the drain electrode of the switching tube, and drain electrode meets power supply VCC；The cathode of the diode connects
It is connected between the drain electrode of the grid and switching tube of second field-effect tube；The grid of the switching tube passes through the 5th resistance
It is connected between the drain electrode and power supply VCC of first field-effect tube, the source electrode of the switching tube and the bidirectional thyristor
Gate leve is connected；One end of the photo resistance is connected between the grid of the switching tube and the 5th resistance, the other end
Ground connection；Two main electrodes of the bidirectional thyristor are connected in electrical appliance circuit, the switch for controlling electrical appliance circuit.
2. ON-OFF control circuit as described in claim 1, which is characterized in that the microwave sensing module includes：Doppler passes
Sensor, oscillating capacitance, antenna, amplifier, first resistor, second resistance；
The first pin and the second pin of the doppler sensor connect the antenna, and third pin and the 5th pin meet institute respectively
The both ends of oscillating capacitance are stated, the 4th pin meets power supply VCC, the 7th pin ground connection, and the 6th pin connects described first resistor one end；
The positive input of the amplifier terminates one that the first resistor is not connect with the 6th pin of the doppler sensor
End, negative input terminate described second resistance one end, and output is used as the microwave to sense mould after terminating the second resistance other end
The output end of block.
3. ON-OFF control circuit as described in claim 1, which is characterized in that the signal comparison module further includes：Third electricity
Resistance, the 4th resistance, calibration swept resistance；
The 3rd resistor, calibration swept resistance and the 4th resistance are sequentially connected in series, and the 3rd resistor is not connected with other elements
A termination power VCC；One end ground connection that 4th resistance is not connected with other elements；
The positive input terminal of the first comparator is connected between the 4th resistance and the calibration swept resistance, and described second
The negative input end of comparator is connected between the calibration swept resistance and the 3rd resistor；
The positive input terminal of the negative input end of the first comparator and second comparator respectively with the microwave sensing module
Output end be connected.
4. ON-OFF control circuit as described in claim 1, which is characterized in that the electrical appliance is electric light.
5. ON-OFF control circuit as claimed in claim 4, which is characterized in that when daytime, the resistance value of the photo resistance is small, institute
Switching tube cut-off, the bidirectional thyristor cut-off are stated, the electric light does not work always.
6. ON-OFF control circuit as claimed in claim 5, which is characterized in that when night, the resistance value of the photo resistance is big, institute
Switching tube conducting is stated, when first field-effect tube or second field-effect tube are connected, the bidirectional thyristor conducting,
The electric light is lighted；When first field-effect tube and second field-effect tube are all ended, the bidirectional thyristor cut-off,
The electric light does not work.
7. ON-OFF control circuit as claimed in claim 6, which is characterized in that first field-effect tube and second effect
Should pipe on or off, by the voltage value of the microwave sensing module output signal and the comparison result control of preset range
System, the preset range are obtained by the electric resistance partial pressure of the calibration swept resistance.
8. ON-OFF control circuit as claimed in claim 7, which is characterized in that the doppler sensor has been internally integrated oscillation
Module, transmitting module, amplification module and detection module.
9. ON-OFF control circuit as claimed in claim 8, which is characterized in that the doppler sensor passes through the antenna
The microwave sounding area for generating a solid space, for perceiving the entrance of human body, movement and leaving.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510599321.2A CN105188222B (en) | 2015-09-18 | 2015-09-18 | A kind of ON-OFF control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510599321.2A CN105188222B (en) | 2015-09-18 | 2015-09-18 | A kind of ON-OFF control circuit |
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| CN105188222A CN105188222A (en) | 2015-12-23 |
| CN105188222B true CN105188222B (en) | 2018-07-31 |
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| CN201510599321.2A Active CN105188222B (en) | 2015-09-18 | 2015-09-18 | A kind of ON-OFF control circuit |
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| CN109548257B (en) * | 2018-12-28 | 2019-08-13 | 广州市番禺奥莱照明电器有限公司 | A kind of lighting system and control method based on microwave sensing |
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| CN104703319A (en) * | 2013-12-04 | 2015-06-10 | 深圳市海洋王照明工程有限公司 | Detection circuit and lighting equipment |
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| KR20010048921A (en) * | 1999-11-30 | 2001-06-15 | 구자홍 | The microwave lighting apparatus |
| CN202496106U (en) * | 2012-02-22 | 2012-10-17 | 柳延东 | Automatic power adjusting street lamp based on Doppler effect |
| CN103813572A (en) * | 2012-11-10 | 2014-05-21 | 西安博昱新能源有限公司 | LED fluorescent lamp circuit having induction switch |
| CN203219558U (en) * | 2013-03-18 | 2013-09-25 | 张建伟 | Intelligent energy-saving switch for common lighting device |
| CN104602384A (en) * | 2013-10-30 | 2015-05-06 | 天津市滨海新区顺德利畜禽养殖专业合作社 | Automatic night illuminating lamp in seedling cultivation farm |
| CN204305421U (en) * | 2014-12-15 | 2015-04-29 | 重庆七色实业有限公司 | A kind of microwave inductive switch |
| CN205160847U (en) * | 2015-09-18 | 2016-04-13 | 青岛歌尔声学科技有限公司 | Switch control circuit |
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| CN104703319A (en) * | 2013-12-04 | 2015-06-10 | 深圳市海洋王照明工程有限公司 | Detection circuit and lighting equipment |
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