CN104378885A - Leading microwave sensing LED on-off control circuit - Google Patents
Leading microwave sensing LED on-off control circuit Download PDFInfo
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- CN104378885A CN104378885A CN201410645762.7A CN201410645762A CN104378885A CN 104378885 A CN104378885 A CN 104378885A CN 201410645762 A CN201410645762 A CN 201410645762A CN 104378885 A CN104378885 A CN 104378885A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention relates to a leading microwave sensing LED on-off control circuit which comprises an annular antenna W, a microwave signal detection module IC1, a triode amplifier VT1, a monostable circuit IC2, a light-control branch circuit, a filtering module, a commutating and voltage stabilizing module, a self-locking branch circuit, a gate pole control circuit switch VTH and a rectifier BR. Due to the fact that the self-locking branch circuit is arranged between a second pin and a third pin of the monostable circuit IC2, the high level is maintained in the second pin of the monostable circuit IC2 all the time, and the low level is maintained in the third pin of the monostable circuit IC2 all the time. In the condition of strong illumination in daytime, the third pin of the monostable circuit IC2 constantly outputs the low level, whether a human body enters the microwave sensing and monitoring range or not, a driving circuit between the rectifier BR and an LED is cut off, the LED is turned off, the condition that the LED is turned on due to the approach of the human body in hard light is avoided, the tacit cooperation of microwave sensing control and photosensitive control is achieved, control is more accurate, and energy saving is better conducted.
Description
Technical field
The present invention relates to a kind of LED switch control circuit, particularly relate to a kind of leading microwave sensing LED switch control circuit.
Background technology
In order to more energy-conservation, avoid LED group often bright and cause energy waste, generally adopting the modes such as acoustic control, light-operated, microwave to control LED group at present, the compound mode of acoustic control, light-operated, microwave etc. also can be adopted to control.
Such as, be in the Chinese invention patent of CN201220668587.X in the patent No., disclose a kind of microwave inductive switch circuit for parking lot, form primarily of power supply, circuit, antenna loop, microwave induction controller, light-operated circuit, back off timer and LED, be PC11V direct current by circuit by power conversion be that microwave sensor is powered, microwave induction controller uses miniature antenna ring to do microwave and detects, antenna loop not only makees transmitting antenna but also receive the echo being moved by human body or vehicle and reflected, light-operated circuit connects microwave induction controller, form primarily of photo resistance, back off timer connects microwave induction controller, by realizing timing function to fixed capacity charging, microwave induction controller controls LED startup by controlling bidirectional triode thyristor completes on/off function, the present invention is based on the automatic control of microwave technology, at light intensity lower than in certain limit, when there being people to enter inductive switching scope, in parking lot, LED daylight lamp is opened automatically, after people leaves, switch automatic delay function LED.
And for example, be in the Chinese invention patent of CN201310306801.6 at application number, disclose a kind of induction type human body proximity alarm controller, it comprises 12V DC power supply, microwave induced and detecting circuit, monostable time delay circuit, direct current relay controls and warning circuit, condition indication circuit, it is characterized in that: the model that in described microwave induced and detecting circuit, microwave induction controller IC1 adopts is TX982, the 1st pin connection circuit positive pole VCC of microwave induction controller IC1, the 2nd pin order stable state delay circuit of microwave induction controller IC1, the 3rd pin connection circuit ground GND of microwave induction controller IC1, the antenna terminal of the two termination microwave induction controller IC1 of loop aerial TX, described monostable time delay circuit is made up of time-base circuit IC2, resistance R1, electrochemical capacitor C1, and the model that time-base circuit IC2 adopts is NE555, 4th pin of time-base circuit IC2 and the 8th pin connection circuit positive pole VCC, 2nd pin of time-base circuit IC2 and one end of the 6th pin connecting resistance R1 and the positive pole of electrochemical capacitor C1, the other end connection circuit positive pole VCC of resistance R1,3rd pin of the 1st pin of time-base circuit IC2 and negative pole connection circuit ground GND, the time-base circuit IC2 of electrochemical capacitor C1 connects direct current relay and controls and warning circuit, described direct current relay controls and warning circuit is made up of direct current relay J, silicon rectifier diode D1 and buzzer HA, 3rd pin of time-base circuit IC2 connects the positive pole of one end of direct current relay J coil and the negative pole of silicon rectifier diode D1 and buzzer HA, the negative pole connection circuit ground GND of the other end of direct current relay J coil and the positive pole of silicon rectifier diode D1 and buzzer HA, described 12V DC power anode connection circuit positive pole VCC, 12V DC power cathode connection circuit ground G ND.The control that just may be used for LED group revised a little by the control circuit of this induction type human body proximity alarm controller, such as, increase light-operated circuit, buzzer replaced with LED group and carry out adaptability revision to control circuit.
Above-mentioned two kinds of control circuits are more representative, though microwave can be realized to a certain extent to be controlled and luminous intensity control, but voltage stabilizing, rectification process are not carried out for the input power of control circuit, particularly do not carry out filtering, microwave induced and detecting circuit then can produce interference to input power conversely, have a strong impact on the work of control circuit, cause control accurate not; In addition, on the coexisting and differentiate of human body proximity and high light, do not have good measure, cause under high light, when human body proximity, LED group still can light, and causes the waste of the energy.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of leading microwave sensing LED switch control circuit, and this leading microwave sensing LED switch control circuit can realize the accurate control to LED group under human body proximity or high light, more energy-conservation.The technical scheme adopted is as follows:
A kind of leading microwave sensing LED switch control circuit, comprise loop aerial W, microwave signal detection module IC1, triode amplifier VT1, monostable circuit IC2 and light-operated branch road, it is characterized in that: also comprise filtration module, rectifying and voltage-stabilizing module, self-locking branch road, gate control circuit switch VTH and rectifier BR; Rectifying and voltage-stabilizing model calling is at the rear of filtration module; Rectifying and voltage-stabilizing module has positive pole exit and negative pole exit; Light-operated branch road comprises the photo resistance RG and current-limiting resistance R5 that are serially connected, and the two ends of light-operated branch road are connected with positive pole exit and negative pole exit respectively; Loop aerial W is connected with Microwave Detector IC1; The output of microwave signal detection module IC1 is connected with the base stage of triode amplifier VT1; The base stage of triode amplifier VT1 is connected with positive pole exit by resistance R3, and the collector electrode of triode amplifier VT1 is connected with positive pole exit by resistance R4, and the emitter of triode amplifier VT1 is connected with negative pole exit; 5th pin, the 1st pin of monostable circuit IC2 are connected with positive pole exit and negative pole exit respectively, 4th pin of monostable circuit IC2 is connected with the collector electrode of triode amplifier, 6th pin of monostable circuit IC2 is connected between photo resistance RG and current-limiting resistance R5,3rd pin of monostable circuit IC2 is connected with the first input end of gate control circuit switch VTH by resistance R7, and second input of gate control circuit switch VTH is connected with negative pole exit; The output of gate control circuit switch VTH is connected with the first input end of rectifier BR, and second input of rectifier BR is connected between filtration module and rectifying and voltage-stabilizing module; Self-locking branch road is connected between the 2nd pin of monostable circuit IC2 and the 3rd pin.
Above-mentioned monostable circuit IC2 only has a stable state, and under the effect of extraneous trigger impulse, circuit is turned to transient state from stable state, after transient state maintains a period of time, returns stable state again, and produces a rectangular pulse at output.Monostable circuit IC2 belongs to prior art, here no longer describes in detail.
The voltage of AC220V is subject to through filtration module, rectifying and voltage-stabilizing module filtered, rectification, voltage stabilizing, supply microwave signal detection module IC1, the normally work such as triode amplifier VT1, monostable circuit IC2.In the normal course of work, when not having human body to enter in microwave sensing monitoring range, ring Shape antenna W outwards can launch microwave signal, now triode amplifier VT1 conducting because of high level input, the 4th pin of monostable circuit IC2 is made to become low level, the monostable circuit of monostable circuit IC2 inside is stable state, the 3rd pin output low level of monostable circuit IC2, self-locking branch road and gate control circuit switch VTH are cut-off work, directly also end the work of rectifier BR to LED drive circuit.
If when someone enters in microwave sensing monitoring range, then ring Shape antenna W will receive the reflected signal of microwave, this signal is after microwave signal detection module IC1 process, triode amplifier VT1 is ended, 4th pin level of monostable circuit IC2 resets from low to high, the monostable circuit of monostable circuit IC2 inside is triggered and is overturn, transient state is become from stable state, 3rd pin of monostable circuit IC2 exports high level, make gate control circuit switch VTH conducting, rectifier BR and LED drive circuit all can enter normal work.The also conducting of self-locking branch road, makes the 2nd pin of monostable circuit IC2 become low level simultaneously.After people leaves monitoring range, triode amplifier VT1 conducting, makes monostable circuit IC2 by transient recovery to stable state, the 3rd pin output low level of monostable circuit IC2, self-locking branch road and gate control circuit switch VTH are ended, and rectifier BR and LED drive circuit quit work simultaneously.
Owing to being provided with filtration module and rectifying and voltage-stabilizing module, filtering, rectification, voltage stabilizing are carried out to the working power of IC1, IC2, VT1 etc., eliminate the series mode interference between electrical network neutral line and common mode disturbances, reach the regulation of IEC950 electromagnetic compatibility international standard, follow-up microwave is detected, amplifies, the switching of stable state/transient state is more accurate, thus the accuracy of significantly microwave sensing control, owing to being provided with self-locking branch road between the 2nd pin and the 3rd pin of monostable circuit IC2, by self-locking branch road, make the 2nd pin of monostable circuit IC2 keep contrary level with the 3rd pin always, when the 2nd pin of monostable circuit IC2 exports as high level, 3rd pin of monostable circuit IC2 exports as low level, when the 2nd pin of monostable circuit IC2 exports as low level, 3rd pin of monostable circuit IC2 exports as high level, therefore, when illumination is stronger by day, the resistance of photo resistance RG becomes very little, 2nd pin of monostable circuit IC2 is exported higher than threshold voltage, monostable circuit IC2 is in steady state, now, no matter triode amplifier VT1 whether conducting, 3rd pin all constant output low levels of monostable circuit IC2, so by day or illumination is stronger when, no matter whether there is human body to enter microwave sensing monitoring range, rectifier BR is cut off to LED drive circuit, LED extinguishes, avoid human body proximity under high light and the situation causing LED to light, realize microwave sensing control, the tacit agreement that light exempts to control coordinates, control more accurate, more energy-conservation.
As preferred version of the present invention, described self-locking branch road comprises self-locking triode VT2 and resistance R6, the base stage of self-locking triode VT2 is connected with the 3rd pin of monostable circuit IC2 by resistance R6, the collector electrode of self-locking triode VT2 is connected with the 2nd pin of monostable circuit IC2, and the emitter of self-locking triode VT2 is connected with negative pole exit.
As the further preferred version of the present invention, described self-locking branch road also comprises timing capacitor C10, and one end of timing capacitor C10 is connected with the collector electrode of described self-locking triode VT2, and the other end of timing capacitor C10 is connected with described negative pole exit.
As preferred version of the present invention, described filtration module is combined type electromagnetic interface filter, combined type electromagnetic interface filter comprises winding and winding coupled electric capacity in L, in L, winding is by the winding L 1 be serially connected, winding L 2 and peripheral element are formed, winding coupled electric capacity comprises electric capacity C1, electric capacity C2, electric capacity C5, electric capacity C6 and winding L 3, electric capacity C1, electric capacity C2 is connected to two front ends of winding L 1 after connecting, electric capacity C5, electric capacity C6 is connected to two front ends of winding L 2 after connecting, the front end of winding L 3 is connected between electric capacity C1 and electric capacity C2, the rear end of winding L 3 is connected between electric capacity C5 and electric capacity C6.Adopt combined type electromagnetic interface filter better can eliminate series mode interference between electrical network neutral line and common mode disturbances, follow-up microwave is detected, amplifies, the switching of stable state/transient state is more accurate, thus the accuracy of significantly microwave sensing control.Above-mentioned peripheral element comprises electric capacity C3, electric capacity C4, resistance RT, resistance U etc.
As preferred version of the present invention, described rectifying and voltage-stabilizing module comprises decompression capacitor C8, dropping resistor R2, rectifier diode VD, voltage stabilizing didoe VS and filter capacitor C9; One end after decompression capacitor C8, dropping resistor R2 parallel connection is connected with a wherein output of described filtration module; The negative terminal of voltage stabilizing didoe VS is connected with the other end after decompression capacitor C8, dropping resistor R2 parallel connection, and the anode of voltage stabilizing didoe VS is connected with another output of filtration module; The anode of rectifier diode VD is connected with the negative terminal of voltage stabilizing didoe VS; One end of filter capacitor C9 is connected with the negative terminal of rectifier diode VD, and the other end of filter capacitor C9 is connected with the negative terminal of rectifier diode VD.The voltage of AC220V is through decompression capacitor C8 step-down, voltage stabilizing didoe VS voltage stabilizing, rectifier diode VD rectification, and after filter capacitor C9 filtering, the direct voltage produced, supply microwave signal detection module IC1, the normally work such as triode amplifier VT1, monostable circuit IC2.
Compared with prior art, tool has the following advantages in the present invention:
Owing to being provided with filtration module and rectifying and voltage-stabilizing module, filtering, rectification, voltage stabilizing are carried out to the working power of IC1, IC2, VT1 etc., eliminate the series mode interference between electrical network neutral line and common mode disturbances, reach the regulation of IEC950 electromagnetic compatibility international standard, follow-up microwave is detected, amplifies, the switching of stable state/transient state is more accurate, thus the accuracy of significantly microwave sensing control, owing to being provided with self-locking branch road between the 2nd pin and the 3rd pin of monostable circuit IC2, make the 2nd pin of monostable circuit IC2 and the 3rd pin keep the level that height is contrary always, when illumination is stronger by day, the resistance of photo resistance RG becomes very little, 2nd pin of monostable circuit IC2 is exported higher than threshold voltage, monostable circuit IC2 is in steady state, now, no matter triode amplifier VT1 whether conducting, 3rd pin all constant output low levels of monostable circuit IC2, so by day or illumination is stronger when, no matter whether there is human body to enter microwave sensing monitoring range, rectifier BR is cut off to LED drive circuit, LED extinguishes, avoid human body proximity under high light and the situation causing LED to light, realize microwave sensing control, the tacit agreement that light exempts to control coordinates, control more accurate, more energy-conservation.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the preferred embodiment for the present invention.
Embodiment
Be described further below in conjunction with accompanying drawing and the preferred embodiment of the present invention.
As shown in Figure 1, this leading microwave sensing LED switch control circuit, comprises loop aerial W, microwave signal detection module IC1, triode amplifier VT1, monostable circuit IC2, light-operated branch road 1, filtration module 2, rectifying and voltage-stabilizing module 3, self-locking branch road 4, gate control circuit switch VTH and rectifier BR; Rectifying and voltage-stabilizing module 3 is connected to the rear of filtration module 2; Rectifying and voltage-stabilizing module 3 has positive pole exit and negative pole exit; Light-operated branch road 1 comprises the photo resistance RG and current-limiting resistance R5 that are serially connected, and the two ends of light-operated branch road 1 are connected with positive pole exit and negative pole exit respectively; Loop aerial W is connected with Microwave Detector IC1; The output of microwave signal detection module IC1 is connected with the base stage of triode amplifier VT1; The base stage of triode amplifier VT1 is connected with positive pole exit by resistance R3, and the collector electrode of triode amplifier VT1 is connected with positive pole exit by resistance R4, and the emitter of triode amplifier VT1 is connected with negative pole exit; 5th pin, the 1st pin of monostable circuit IC2 are connected with positive pole exit and negative pole exit respectively, 4th pin of monostable circuit IC2 is connected with the collector electrode of triode amplifier, 6th pin of monostable circuit IC2 is connected between photo resistance RG and current-limiting resistance R5,3rd pin of monostable circuit IC2 is connected with the first input end of gate control circuit switch VTH by resistance R7, and second input of gate control circuit switch VTH is connected with negative pole exit; The output of gate control circuit switch VTH is connected with the first input end of rectifier BR, and second input of rectifier BR is connected between filtration module 2 and rectifying and voltage-stabilizing module 3; Self-locking branch road is connected between the 2nd pin of monostable circuit IC2 and the 3rd pin.
Self-locking branch road 4 comprises self-locking triode VT2, resistance R6 and timing capacitor C10, the base stage of self-locking triode VT2 is connected with the 3rd pin of monostable circuit IC2 by resistance R6, the collector electrode of self-locking triode VT2 is connected with the 2nd pin of monostable circuit IC2, the emitter of self-locking triode VT2 is connected with negative pole exit, one end of timing capacitor C10 is connected with the collector electrode of described self-locking triode VT2, and the other end of timing capacitor C10 is connected with negative pole exit.
Filtration module 2 is combined type electromagnetic interface filter, combined type electromagnetic interface filter comprises winding and winding coupled electric capacity in L, in L, winding is made up of the winding L 1 be serially connected, winding L 2 and peripheral element, winding coupled electric capacity comprises electric capacity C1, electric capacity C2, electric capacity C5, electric capacity C6 and winding L 3, two front ends of winding L 1 are connected to after electric capacity C1, electric capacity C2 series connection, two front ends of winding L 2 are connected to after electric capacity C5, electric capacity C6 series connection, the front end of winding L 3 is connected between electric capacity C1 and electric capacity C2, and the rear end of winding L 3 is connected between electric capacity C5 and electric capacity C6.Above-mentioned peripheral element comprises electric capacity C3, electric capacity C4, resistance RT, resistance U etc.
Rectifying and voltage-stabilizing module 3 comprises decompression capacitor C8, dropping resistor R2, rectifier diode VD, voltage stabilizing didoe VS and filter capacitor C9; One end after decompression capacitor C8, dropping resistor R2 parallel connection is connected with a wherein output of described filtration module; The negative terminal of voltage stabilizing didoe VS is connected with the other end after decompression capacitor C8, dropping resistor R2 parallel connection, and the anode of voltage stabilizing didoe VS is connected with another output of filtration module; The anode of rectifier diode VD is connected with the negative terminal of voltage stabilizing didoe VS; One end of filter capacitor C9 is connected with the negative terminal of rectifier diode VD, and the other end of filter capacitor C9 is connected with the negative terminal of rectifier diode VD.
The voltage of AC220V is subject to through filtration module 2, rectifying and voltage-stabilizing module 3 filtering, rectification, voltage stabilizing, supply microwave signal detection module IC1, the normally work such as triode amplifier VT1, monostable circuit IC2.In the normal course of work, when not having human body to enter in microwave sensing monitoring range, ring Shape antenna W outwards can launch microwave signal, now triode amplifier VT1 conducting because of high level input, the 4th pin of monostable circuit IC2 is made to become low level, the monostable circuit of monostable circuit IC2 inside is stable state, the 3rd pin output low level of monostable circuit IC2, self-locking branch road 4 and gate control circuit switch VTH are cut-off work, directly also end the work of rectifier BR to LED drive circuit.
If when someone enters in microwave sensing monitoring range, then ring Shape antenna W will receive the reflected signal of microwave, this signal is after microwave signal detection module IC1 process, triode amplifier VT1 is ended, 4th pin level of monostable circuit IC2 resets from low to high, the monostable circuit of monostable circuit IC2 inside is triggered and is overturn, transient state is become from stable state, 3rd pin of monostable circuit IC2 exports high level, make gate control circuit switch VTH conducting, rectifier BR and LED drive circuit all can enter normal work.The also conducting of self-locking branch road 4, makes the 2nd pin of monostable circuit IC2 become low level simultaneously.After people leaves monitoring range, triode amplifier VT1 conducting, makes monostable circuit IC2 by transient recovery to stable state, the 3rd pin output low level of monostable circuit IC2, self-locking branch road 4 and gate control circuit switch VTH are ended, and rectifier BR and LED drive circuit quit work simultaneously.
Owing to being provided with filtration module 2 and rectifying and voltage-stabilizing module 3, filtering, rectification, voltage stabilizing are carried out to the working power of IC1, IC2, VT1 etc., eliminate the series mode interference between electrical network neutral line and common mode disturbances, reach the regulation of IEC950 electromagnetic compatibility international standard, follow-up microwave is detected, amplifies, the switching of stable state/transient state is more accurate, thus the accuracy of significantly microwave sensing control, owing to being provided with self-locking branch road 4 between the 2nd pin and the 3rd pin of monostable circuit IC2, by self-locking branch road 4, make the 2nd pin of monostable circuit IC2 keep contrary level with the 3rd pin always, when the 2nd pin of monostable circuit IC2 exports as high level, 3rd pin of monostable circuit IC2 exports as low level, when the 2nd pin of monostable circuit IC2 exports as low level, 3rd pin of monostable circuit IC2 exports as high level, therefore, when illumination is stronger by day, the resistance of photo resistance RG becomes very little, 2nd pin of monostable circuit IC2 is exported higher than threshold voltage, monostable circuit IC2 is in steady state, now, no matter triode amplifier VT1 whether conducting, 3rd pin all constant output low levels of monostable circuit IC2, so by day or illumination is stronger when, no matter whether there is human body to enter microwave sensing monitoring range, rectifier BR is cut off to LED drive circuit, LED extinguishes, avoid human body proximity under high light and the situation causing LED to light, realize microwave sensing control, the tacit agreement that light exempts to control coordinates, control more accurate, more energy-conservation.
In addition; it should be noted that, the specific embodiment described in this specification, its each several part title etc. can be different; all equivalences of doing according to structure, feature and the principle described in inventional idea of the present invention or simple change, be included in the protection range of patent of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (5)
1. a leading microwave sensing LED switch control circuit, comprise loop aerial W, microwave signal detection module IC1, triode amplifier VT1, monostable circuit IC2 and light-operated branch road, it is characterized in that: also comprise filtration module, rectifying and voltage-stabilizing module, self-locking branch road, gate control circuit switch VTH and rectifier BR; Rectifying and voltage-stabilizing model calling is at the rear of filtration module; Rectifying and voltage-stabilizing module has positive pole exit and negative pole exit; Light-operated branch road comprises the photo resistance RG and current-limiting resistance R5 that are serially connected, and the two ends of light-operated branch road are connected with positive pole exit and negative pole exit respectively; Loop aerial W is connected with Microwave Detector IC1; The output of microwave signal detection module IC1 is connected with the base stage of triode amplifier VT1; The base stage of triode amplifier VT1 is connected with positive pole exit by resistance R3, and the collector electrode of triode amplifier VT1 is connected with positive pole exit by resistance R4, and the emitter of triode amplifier VT1 is connected with negative pole exit; 5th pin, the 1st pin of monostable circuit IC2 are connected with positive pole exit and negative pole exit respectively, 4th pin of monostable circuit IC2 is connected with the collector electrode of triode amplifier, 6th pin of monostable circuit IC2 is connected between photo resistance RG and current-limiting resistance R5,3rd pin of monostable circuit IC2 is connected with the first input end of gate control circuit switch VTH by resistance R7, and second input of gate control circuit switch VTH is connected with negative pole exit; The output of gate control circuit switch VTH is connected with the first input end of rectifier BR, and second input of rectifier BR is connected between filtration module and rectifying and voltage-stabilizing module; Self-locking branch road is connected between the 2nd pin of monostable circuit IC2 and the 3rd pin.
2. leading microwave sensing LED switch control circuit as claimed in claim 1, it is characterized in that: described self-locking branch road comprises self-locking triode VT2 and resistance R6, the base stage of self-locking triode VT2 is connected with the 3rd pin of monostable circuit IC2 by resistance R6, the collector electrode of self-locking triode VT2 is connected with the 2nd pin of monostable circuit IC2, and the emitter of self-locking triode VT2 is connected with negative pole exit.
3. leading microwave sensing LED switch control circuit as claimed in claim 2, it is characterized in that: described self-locking branch road also comprises timing capacitor C10, one end of timing capacitor C10 is connected with the collector electrode of described self-locking triode VT2, and the other end of timing capacitor C10 is connected with described negative pole exit.
4. leading microwave sensing LED switch control circuit as claimed in claim 1, it is characterized in that: described filtration module is combined type electromagnetic interface filter, combined type electromagnetic interface filter comprises winding and winding coupled electric capacity in L, in L, winding is by the winding L 1 be serially connected, winding L 2 and peripheral element are formed, winding coupled electric capacity comprises electric capacity C1, electric capacity C2, electric capacity C5, electric capacity C6 and winding L 3, electric capacity C1, electric capacity C2 is connected to two front ends of winding L 1 after connecting, electric capacity C5, electric capacity C6 is connected to two front ends of winding L 2 after connecting, the front end of winding L 3 is connected between electric capacity C1 and electric capacity C2, the rear end of winding L 3 is connected between electric capacity C5 and electric capacity C6.
5. leading microwave sensing LED switch control circuit as claimed in claim 1, is characterized in that: described rectifying and voltage-stabilizing module comprises decompression capacitor C8, dropping resistor R2, rectifier diode VD, voltage stabilizing didoe VS and filter capacitor C9; One end after decompression capacitor C8, dropping resistor R2 parallel connection is connected with a wherein output of described filtration module; The negative terminal of voltage stabilizing didoe VS is connected with the other end after decompression capacitor C8, dropping resistor R2 parallel connection, and the anode of voltage stabilizing didoe VS is connected with another output of filtration module; The anode of rectifier diode VD is connected with the negative terminal of voltage stabilizing didoe VS; One end of filter capacitor C9 is connected with the negative terminal of rectifier diode VD, and the other end of filter capacitor C9 is connected with the negative terminal of rectifier diode VD.
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| CN201410645762.7A CN104378885A (en) | 2014-11-15 | 2014-11-15 | Leading microwave sensing LED on-off control circuit |
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| CN112666855A (en) * | 2020-12-03 | 2021-04-16 | 马宏 | Medical equipment degassing unit control circuit for anesthesia department |
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| CN110265992A (en) * | 2019-06-03 | 2019-09-20 | 深圳市华讯方舟微电子科技有限公司 | A kind of false-touch prevention protection circuit, wireless data transmission module and unmanned plane |
| CN111194128A (en) * | 2020-01-07 | 2020-05-22 | 胡万举 | Intelligent traffic light controller |
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Application publication date: 20150225 |