CN102665362B - Earthing type protective infrared human-sensing LED smart lamp - Google Patents
Earthing type protective infrared human-sensing LED smart lamp Download PDFInfo
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- CN102665362B CN102665362B CN201210167051.4A CN201210167051A CN102665362B CN 102665362 B CN102665362 B CN 102665362B CN 201210167051 A CN201210167051 A CN 201210167051A CN 102665362 B CN102665362 B CN 102665362B
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- 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 an earthing type protective infrared human-sensing LED smart lamp which comprises an LED lamp body. The LED lamp body is connected with a smart control circuit and comprises an alternate-current reactive voltage reduction circuit, a rectifying bridge and a PFC (power factor correction) circuit, wherein the PFC circuit is respectively connected with a direct-current voltage reduction and stabilization circuit and a driving circuit, the direct-current voltage reduction and stabilization circuit is respectively connected with an infrared human detection circuit and the driving circuit, the infrared human detection circuit is connected with the driving circuit, and the driving circuit is connected with the LED lamp body. The infrared human detection circuit comprises a level conversion circuit and is connected with the direct-current voltage reduction and stabilization circuit and an infrared human detector, the infrared human detector is connected with a signal transmitting circuit which is connected with the driving circuit and used for regulating output power at highlight state and mircropower state according to user needs. An outer casing of the LED lamp body is provided with a metal earthing device. The earthing type protective infrared human-sensing LED smart lamp has the advantages of high power supply efficiency, low circuit temperature rise, fine safety performance and convenience in use and installation.
Description
Technical field
The present invention relates to a kind of LED technology, relate in particular to a kind of protective earthing type human body infrared induction LED intelligent lamp.
Background technology
LED lamp, due to advantages such as energy-saving and environmental protection, life-span length, has become a kind of emerging energy-saving lamp.LED lamp Driving technique combines with human body infrared Detection Techniques, has further widened the application of LED lamp.
Existing human body infrared induction LED lamp is partly that human body infrared is surveyed and driven separated installation, for example application number with LED: 201120188069.3 Chinese invention patent, discloses " a kind of LED energy-saving lamp circuit of infrared induction "; The advantage of this scheme is: detector can be determined installation site according to user's request, and investigative range is wide; Detection circuit and drive circuit are external, good heat dissipation effect.This scheme there is following problems: (1) LED lamp only has " entirely bright ", " entirely going out " two states, cannot regulate LED lamp output brightness, human body leaves behind detecting area, and LED lamp all extinguishes, the place such as be not suitable in underground garage, library, reading room and use, LED lamp bad adaptability.
(2) while using, need to change original circuit, inconvenience is installed, when detection circuit and drive circuit apart from each other, connecting line is easily brought interference into, and effect is controlled in impact.
In view of the foregoing, people propose again a kind of detection circuit and drive circuit to be made of one, to be built in the technical scheme in LED fluorescent tube.Application number for example: 201120053641.5 Chinese invention patent, discloses " a kind of infrared induction LED fluorescent lamp ".The advantage of this invention is: human body infrared is surveyed and is placed in lamp holder, and control circuit is placed in fluorescent tube, and profile is simple, can directly replace original fluorescent lamp tube, simple installation.But there is following problem in this scheme:
(1) control circuit adopts resistance step-down mode to chip and detector power supply, and circuit temperature rise is large, and power-efficient is low, and control circuit is built in fluorescent tube, causes heat accumulation, and radiating effect is poor, has a strong impact on LED lamp pearl useful life.
(2) ac input end is not done lightning protection, the safeguard procedures such as anti-interference, and the interference in civil power, noise can affect LED lamp pearly-lustre effect, and affects the normal work of control circuit.
And in prior art scheme, LED lamp housing conductive part is not done ground protection and is processed, and easily jeopardizes the person and LED lamp apparatus safety.
Summary of the invention
Object of the present invention, exactly for addressing the above problem, provides a kind of rational in infrastructure, and detection, driving are built in fluorescent tube, and circuit temperature rise is low, and power-efficient is high; Output state, " highlighted ", " micro-power consumption " can be set strong adaptability as required; The protective earthing type human body infrared induction LED intelligent lamp that security performance is good.
For achieving the above object, the present invention adopts following technical scheme:
A kind of protective earthing type human body infrared induction LED intelligent lamp, it comprises LED lamp body, LED lamp body is connected with intelligent control circuit, described intelligent control circuit comprises the idle reduction voltage circuit of the interchange being connected with power supply, it is connected with PFC correcting circuit by rectifier bridge, PFC correcting circuit is connected with drive circuit with DC decompression voltage stabilizing circuit respectively, DC decompression voltage stabilizing circuit is connected with drive circuit by human body infrared detection circuit respectively, human body infrared detection circuit is also connected with drive circuit, drive circuit is connected with LED lamp body, described human body infrared detection circuit comprises level shifting circuit, its input is connected with DC decompression voltage stabilizing circuit, output is connected with human body infrared detector, human body infrared detector is connected with signal transmitting circuit, signal transmitting circuit is connected with drive circuit, signal transmitting circuit requires to regulate highlighted state according to user, the power output of micro-power consumption state, described LED lamp body shell is provided with metal earthing device.
Described interchange is idle, and reduction voltage circuit is connected with power supply circuit by EMI filter circuit, and power supply circuit is connected with power line.
Described power supply circuit is comprised of the negative tempperature coefficient thermistor NTC being connected with power firestreak, the protective tube FUSE being connected with zero-power line and the Transient Suppression Diode TVS that is connected across between the two, and Transient Suppression Diode TVS two ends are connected with EMI filter circuit input.
Described interchange is idle, and reduction voltage circuit is high-voltage capacitance C21, C22, R26, R27, and R26 is in parallel with C21, and R27 is in parallel with C22.C21, C22 are serially connected in respectively the ac input end of rectifier bridge.
Described DC decompression voltage stabilizing circuit is mainly comprised of pliotron Q1, electrochemical capacitor C16, C15, capacitor C 12, resistance R 5, R6, R17, voltage-stabiliser tube VZ2; Wherein the collector electrode of triode Q 1 is connected with R 17 one end, and R 17 other ends are connected with PFC correcting circuit, and base stage connects respectively at R in parallel 5, R6, and base stage is also through C16, voltage-stabiliser tube VZ2 difference ground connection simultaneously; Emitter is through capacitor C in parallel 12, C15 ground connection.
Described level shifting circuit is by resistance R 1, R2, capacitor C 1, C8, and voltage-stabiliser tube VZ1, electrochemical capacitor E1 forms; After resistance R 1, R2 series connection, one end is connected with DC decompression voltage stabilizing circuit, and the other end is connected with voltage-stabiliser tube VZ1 negative pole, voltage-stabiliser tube VZ1 plus earth, and VZ1 negative pole is as testing circuit power vd D simultaneously;
Described testing circuit is to control special integrated chip IC2, pyroelectric infrared transducer PIR, resistance R 3, R4, R7, R8, R11, R12, R13 by pyroelectricity, electrochemical capacitor E2, E3, E4, E5, and capacitor C 2, C3, C4, C5, C6, C7 form; Pyroelectric infrared transducer PIR pin 3 joins with IC2 pin 4, E2 positive pole, C2, and E2 negative pole connects power supply ground, another termination power ground of C2.PIR pin 2 connects power supply ground through R7, C5; PIR pin 2 connects IC2 pin 2; PIR pin 1 connects power supply ground; Power vd D is through R3 to IC2 pin 8, and the external C3 of IC2 pin 8 is to power supply ground; Power vd D is through R4 to IC2 pin 6, and the external C4 of IC2 pin 6 is to power supply ground; IC2 pin 3 connects E3 positive pole through R8, E3 negative pole connects power supply ground, IC2 pin 3 connects IC2 pin 1 through R11 C6 respectively, IC2 pin 1 connects E4 negative pole, E4 positive pole connects IC2 pin 14 after R13, IC2 pin 15 connects E5 positive pole, and E5 negative pole connects power supply ground, and IC2 pin 14 connects IC2 pin 16. IC2 pins 5 through R12 C7 respectively and connects power supply ground; IC2 pin 13 meets power vd D.
Described signal transmitting circuit is mainly by resistance R 14, R15, R18, R22, capacitor C 18, C20, and triode T1, T2 form, and resistance R 14 is connected with the base stage of T1, and R15 is connected with the base stage of T2 and the collector electrode of T1, the grounded emitter of T1, T2; The current collection of T2 is detectable signal output very.
Described earthing device is for to be provided with aluminium shell outward at LED lamp body; prepared screw-bolt hole on it; the wire head of copper conductor connects copper aluminium terminal; after the deoxidation of copper aluminium terminal, warding off tin processes; and at terminal surfaces coating conductive paste; at prepared screw-bolt hole place pad tinfoil paper, with bolt, be pressed on shell another termination of copper conductor PE protective wire.
Described drive circuit is PWM constant-current control circuit, mainly by power inductance L4, fast recovery diode D10, capacitor C 17, power MOSFET Q2, pwm chip IC1, resistance R 20, R21, R23, R24, formed, pwm chip IC1 works in PWM mode, IC1 pin 3 is set peak level, change the incoming level of IC1 pin 3, thus linearity light adjusting; IC1 pin 2 is crossed the electric current of LED lamp by outer meeting resistance R23, R24 sample streams; The threshold level that the level of the incoming level of IC1 pin 3 and IC1 inner setting is controlled as PWM; Certain moment IC1 pin 3 is set level higher than IC1 inner setting level, when sample rate current reaches IC1 pin 3 and sets level, switch-off power MOSFET Q2, when sample rate current is during lower than IC1 inner setting level, open power MOSFET Q2, realize in this way PWM constant current and control.
The present invention is by utilizing high-voltage capacitance, reduces rectifier bridge AC-input voltage, and then reduces rectifier bridge VD, and under the constant prerequisite of the required direct current of assurance system, whole circuit power consumption decreases.High-voltage capacitance does not consume electric energy, only plays hypotensive effect, then coordinates with rear class DC decompression voltage stabilizing circuit, to System on Chip/SoC and circuit supply, adopts in this way, has improved power-efficient, has reduced circuit temperature rise.The infrared ray responsive that pyroelectric infrared transducer PIR only sends human body after Fresnel Lenses filtering, when having people to enter detecting area, PIR signal is after the inner two-stage of pyroelectricity special integrated chip IC2 is amplified, and IC2 pin 11 output high level are to signal transmission unit.Detecting area nobody time, IC2 pin 11 output low levels.Regulate R3, C3, can set delay time.Someone enters detecting area, IC2 pin 11 output high level, and TI conducting, T2 cut-off, now, IC1 pin 3 is through R22 to ground, and the level on R22 is light modulation incoming level.In detecting area nobody time, IC2 pin 11 output low levels, TI cut-off, T2 conducting, IC1 pin 3 respectively through R18, R22 to power supply.Now, IC1 pin 3 incoming levels depend on the resistance in parallel of R22, R18.Regulate the resistance of R22, R18, can change the power output of highlighted state, micro-power consumption state.
The invention has the beneficial effects as follows:
1, adopt to exchange idle step-down, the DC decompression voltage stabilizing circuit mode that matches, to chip and testing circuit, provide direct current, reduced whole system power consumption, improved power-efficient, reduced circuit temperature rise.
2, adopt signal transmitting circuit, LED lamp output state " highlighted ", " micro-power consumption ", can set according to user's request, improved the adaptability of LED lamp.
3, human body infrared detection circuit and LED drive circuit are made of one, and are built in fluorescent tube, have reduced external disturbance intrusion, easy to install and use.
4, application of grounding conservation treatment, can avoid jeopardizing in insulation damages or other situations the person and LED lamp apparatus safety.
Accompanying drawing explanation
Fig. 1 is the general frame of the present invention;
Fig. 2 is overall circuit figure of the present invention;
Fig. 3 is the overall circuit figure of remainder of the present invention;
Fig. 4 is DC decompression voltage stabilizing circuit figure;
Fig. 5 is signal transmitting circuit diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described.
Protective earthing type human body infrared induction LED intelligent lamp as shown in Figure 1, it comprises LED lamp body, LED lamp body is connected with intelligent control circuit, described intelligent control circuit comprises power supply circuit, it with EMI filter circuit, exchange idle reduction voltage circuit, rectifier bridge and PFC correcting circuit and be connected, PFC correcting circuit is connected with PWM constant-current control circuit with DC decompression voltage stabilizing circuit, and DC decompression voltage stabilizing circuit is connected with PWM constant-current control circuit with level conversion respectively; Level shifting circuit is connected with human body infrared detection circuit, and human body infrared detection circuit is connected with PWM constant-current control circuit by signal transmitting circuit, and PWM constant-current control circuit is connected with LED lamp body, and described LED lamp body shell is provided with metal earthing device.
In Fig. 2, Fig. 3, this power supply circuit is comprised of negative tempperature coefficient thermistor NTC, protective tube FUSE, Transient Suppression Diode TVS.Thermistor NTC is for reducing starting current, and protective tube FUSE is for short circuit, overload protection, and TVS, for voltage-limiting protection, suppresses electric net overload pulse.Thermistor NTC, protective tube FUSE are serially connected in electric power incoming line, and TVS is attempted by electric power incoming line.
EMI filter circuit is by safety capacitor C 9, C10, choke L1, L2, and resistance R 9, R10, common mode inhibition choke L3, common mode inhibition capacitor C Y1, CY2 form.C9, C10, L1, C9, C10, L1, L2, R9, R10 form pi type filter and are used for suppressing differential mode interference, and common mode choke L3, CY1, CY2 are used for suppressing common mode disturbances.C9, C10 are attempted by electric power incoming line, and R9, R10 be again serially connected with in electric power incoming line in parallel with L1, L2 respectively, and common mode inhibition choke L3 two inputs are attempted by electric power incoming line.L3 output arrives and exchanges ground through CY1, CY2 respectively.L3 output termination rectifier bridge is powered to PWM constant-current control circuit.
This exchanges idle reduction voltage circuit is high-voltage capacitance C21, C22, R26, R27, and R26 is in parallel with C21, and R27 is in parallel with C22.C21, C22 are serially connected in respectively the ac input end of rectifier bridge.
Its operation principle is: utilize high-voltage capacitance, reduce rectifier bridge AC-input voltage, and then reduce rectifier bridge VD, under the constant prerequisite of the required direct current of assurance system, whole circuit power consumption decreases.High-voltage capacitance does not consume electric energy, only plays hypotensive effect, then coordinates with rear class DC decompression voltage stabilizing circuit, to System on Chip/SoC and circuit supply, adopts in this way, has improved power-efficient, has reduced circuit temperature rise.
Current rectifying and wave filtering circuit is by D3, D4, D5, D6, and capacitor C 11 forms.
PFC correcting circuit is by electrochemical capacitor C13, C14, the balancing half-bridge compensation circuit that diode D7, D8, D9 form.C13, D7 form an arm of half-bridge, and C14, D9 form another arm of half-bridge, and D8, R19 form connecting path, and this correcting circuit utilization is filled out paddy principle and compensated.C13 is anodal, D9 negative pole is connected with cathode rectifier, and C14 negative pole, D7 positive pole and rectifier bridge negative pole are connected, and D8 is anodal to be connected with C13 negative pole, D7 negative pole, and D8 negative pole is connected with D9 is anodal, C14 is anodal after R19.
DC decompression voltage stabilizing circuit is by pliotron Q1, electrochemical capacitor C16, C15, capacitor C 12, the emitter follower that resistance R 5, R6, R17, voltage-stabiliser tube VZ2 form.The base stage of Q1 to be connected to voltage-stabiliser tube VZ2, the exportable stable DC voltage of QI emitter.The base stage of Q1 is also connected to electrochemical capacitor C16 to ground, is equivalent to be connected at Q1 emitter the electric capacity of (1+ β) C16, forms a kind of capacitance multiplication formula low pass filter, can effectively eliminate ripple.This circuit has filtering and pressure stabilization function simultaneously.Q1 collector electrode meets PFC through R17 and proofreaies and correct output, and Q1 base stage connects cathode rectifier after R5, R6 parallel connection, and Q1 emitter is to power supply ground after C12, C15 parallel connection, and QI emitter connects pwm chip IC17 pin, simultaneously to chip IC 1 and detection circuit power supply.
PWM constant-current control circuit is comprised of power inductance L4, fast recovery diode D10, capacitor C 17, power MOSFET Q2, pwm chip IC1, resistance R 20, R21, R23, R24.
Its operation principle is: LED constant-current driven chip IC1 works in PWM mode, and IC1 pin 3 is set peak level, changes the incoming level of IC1 pin 3, can linearity light adjusting.IC1 pin 2 is crossed the electric current of LED lamp by outer meeting resistance R23, R24 sample streams.The threshold level that the 250mv level of the incoming level of IC1 pin 3 and IC1 inner setting is controlled as PWM.For example, certain moment IC1 pin 3 is set level higher than IC1 inner setting 250mv level, when sample rate current reaches IC1 pin 3 setting level, switch-off power MOSFET Q2, when sample rate current is during lower than IC1 inner setting 250mv, open power MOSFET Q2, realize in this way PWM constant current and control.
Human body infrared detection circuit comprises flat change-over circuit, testing circuit two parts.Power-switching circuit is by resistance R 1, R2, voltage-stabiliser tube VZ1, and electrochemical capacitor E1 forms.VZ1 negative pole is as testing circuit power vd D.Described testing circuit is to control special integrated chip IC2, pyroelectric infrared transducer PIR, resistance R 3, R4, R7, R8, R11, R12, R13 by pyroelectricity, electrochemical capacitor E2, E3, E4, E5, and capacitor C 2, C3, C4, C5, C6, C7 form.
Its operation principle is: the infrared ray responsive that pyroelectric infrared transducer PIR only sends human body after Fresnel Lenses filtering, when having people to enter detecting area, PIR signal is after the inner two-stage of pyroelectricity special integrated chip IC2 is amplified, and IC2 pin 11 output high level are to signal transmission unit.Detecting area nobody time, IC2 pin 11 output low levels.Regulate R3, C3, can set delay time.
As shown in Figure 5, signal transmitting circuit is by resistance R 14, R15, R18, R22, capacitor C 18, C20, and triode T1, T2 form.
Signal transmitting circuit working principle is: someone enters detecting area, IC2 pin 11 output high level, and TI conducting, T2 cut-off, now, IC1 pin 3 is through R22 to ground, and the level on R22 is light modulation incoming level.In detecting area nobody time, IC2 pin 11 output low levels, TI cut-off, T2 conducting, IC1 pin 3 respectively through R18, R22 to power supply.Now, IC1 pin 3 incoming levels depend on the resistance in parallel of R22, R18.Regulate the resistance of R22, R18, can change the power output of highlighted state, micro-power consumption state.
Ground protection way is: at LED lamp aluminium shell prepared screw-bolt hole; copper conductor wire head connects copper aluminium terminal, and after the deoxidation of copper aluminium terminal, ward off tin and process, and at terminal surfaces coating conductive paste; at prepared screw-bolt hole place pad tinfoil paper, finally with bolt, be pressed on shell.Another termination of copper conductor PE protective wire.
Overall work process of the present invention is:
First input civil power carries out power supply processing, comprises lightning protection, overvoltage protection, short circuit, overload protection, limiting starting current protection, then connects EMI filter circuit.EMI filter circuit is eliminated, is suppressed common mode disturbances, the differential mode interference of input civil power.After EMI filtering, connect and exchange idle reduction voltage circuit, input civil power is carried out to idle step-down, and input as the interchange of current rectifying and wave filtering circuit.The output of current rectifying and wave filtering circuit direct current, after PFC proofreaies and correct, connects DC decompression voltage stabilizing circuit, and decompression voltage regulator employing is penetrated level and followed mode simultaneously to detection circuit and IC1 power supply.The pin 3 of IC1, as linearity light adjusting input, changes the incoming level of pin 3, can realize LED lamp function.IC1 and peripheral Q1 and resistance, electric capacity form LED lamp PWM constant-current drive circuit.
The infrared ray that detection circuit contact unit PIR human body discharges, when having people to enter detecting area, probe PIR exports strong amplitude signal to IC2 pin two, IC2 inside carry out amplification ratio after, pin one 1 output high level, this high level is input to signal transmitting circuit, makes IC1 pin 3 outsides be input as high level, and LED lamp is in highlighted state.When human body leave after a period of time or detecting area, detecting area nobody time, the weak amplitude signal of probe PIR output is to IC2 pin two, IC2 pin one 1 output low level, to signal transmitting circuit, makes IC1 pin 3 outsides be input as low level, LED is in micro-power consumption state.Delay time, the output brightness of highlighted state, micro-power consumption state all can be set according to actual needs.
Above-described embodiment is better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other are any does not run counter to modification, combination, the simplification under Spirit Essence of the present invention and principle, done and is equivalent replacement mode, within being included in protection scope of the present invention.
Claims (6)
1. a protective earthing type human body infrared induction LED intelligent lamp, it comprises LED lamp body, LED lamp body is connected with intelligent control circuit, described intelligent control circuit comprises the idle reduction voltage circuit of the interchange being connected with power supply, it is connected with PFC correcting circuit by rectifier bridge, and PFC correcting circuit is connected with drive circuit with DC decompression voltage stabilizing circuit respectively; DC decompression voltage stabilizing circuit is connected with drive circuit by human body infrared detection circuit respectively; Human body infrared detection circuit is also connected with drive circuit, drive circuit is connected with LED lamp body, it is characterized in that, described human body infrared detection circuit comprises level shifting circuit, its input is connected with DC decompression voltage stabilizing circuit, output is connected with human body infrared detector, and human body infrared detector is connected with signal transmitting circuit, and signal transmitting circuit is connected with drive circuit; The power output of the highlighted state of signal transmitting circuit adjustment, micro-power consumption state; Described LED lamp body shell is provided with metal earthing device;
Described interchange is idle, and reduction voltage circuit is high-voltage capacitance C21, high-voltage capacitance C22, resistance R 26, resistance R 27, resistance R 26 is in parallel with high-voltage capacitance C21, resistance R 27 is in parallel with high-voltage capacitance C22, and high-voltage capacitance C21, high-voltage capacitance C22 are serially connected in respectively between EMI filter circuit and current rectifying and wave filtering circuit;
Described DC decompression voltage stabilizing circuit is mainly comprised of pliotron Q1, electrochemical capacitor C16, capacitor C 15, capacitor C 12, resistance R 5, resistance R 6, resistance R 17, voltage-stabiliser tube VZ2; Wherein the collector electrode of triode Q 1 is connected with resistance R 17 one end, and resistance R 17 other ends are connected with PFC correcting circuit, and base stage is connected with resistance R 5, resistance R 6 in parallel respectively, and base stage is also through electrochemical capacitor C16, voltage-stabiliser tube VZ2 difference ground connection simultaneously; Emitter is through capacitor C in parallel 12, capacitor C 15 ground connection.
2. protective earthing type human body infrared induction LED intelligent lamp as claimed in claim 1, is characterized in that, described interchange is idle, and reduction voltage circuit is connected with power supply circuit by EMI filter circuit, and power supply circuit is connected with power line.
3. protective earthing type human body infrared induction LED intelligent lamp as claimed in claim 2; it is characterized in that; described power supply main circuit will be comprised of the negative tempperature coefficient thermistor NTC being connected with power firestreak, the protective tube FUSE being connected with zero-power line and the Transient Suppression Diode TVS being connected across between the two, and Transient Suppression Diode TVS two ends are connected with EMI filter circuit input.
4. protective earthing type human body infrared induction LED intelligent lamp as claimed in claim 1, is characterized in that, described level shifting circuit is by resistance R 1, resistance R 2, capacitor C 1, capacitor C 8, and voltage-stabiliser tube VZ1, electrochemical capacitor E1 forms; After resistance R 1, resistance R 2 series connection, one end is connected with DC decompression voltage stabilizing circuit, and the other end is connected with voltage-stabiliser tube VZ1 negative pole, voltage-stabiliser tube VZ1 plus earth, and VZ1 negative pole is as testing circuit power vd D simultaneously;
Described testing circuit is mainly controlled special integrated chip IC2, pyroelectric infrared transducer PIR, resistance R 3, resistance R 4, resistance R 7, resistance R 8, resistance R 11, resistance R 12, resistance R 13 by pyroelectricity, electrochemical capacitor E2, electrochemical capacitor E3, electrochemical capacitor E4, electrochemical capacitor E5, capacitor C 2, capacitor C 3, capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7 form; Pyroelectric infrared transducer PIR pin 3 joins with pyroelectricity control special integrated chip IC2 pin 4, electrochemical capacitor E2 positive pole, capacitor C 2, and electrochemical capacitor E2 negative pole connects power supply ground, capacitor C 2 another termination powers ground;
PIR pin 2 connects power supply ground through resistance R 7, capacitor C 5, PIR pin 2 connects pyroelectricity and controls special integrated chip IC2 pin 2, PIR pin 1 connects power supply ground, power vd D controls special integrated chip IC2 pin 8 through resistance R 3 to pyroelectricity, and pyroelectricity is controlled special integrated chip IC2 pin 8 external capacitor C3 to power supply ground, power vd D controls special integrated chip IC2 pin 6 through resistance R 4 to pyroelectricity, and pyroelectricity is controlled special integrated chip IC2 pin 6 external capacitor C4 to power supply ground, pyroelectricity is controlled special integrated chip IC2 pin 3 and is connect electrochemical capacitor E3 positive pole through resistance R 8, electrochemical capacitor E3 negative pole connects power supply ground, pyroelectricity is controlled special integrated chip IC2 pin 3 respectively through resistance R 11, capacitor C 6 connects pyroelectricity and controls special integrated chip IC2 pin 1, pyroelectricity is controlled special integrated chip IC2 pin 1 and is connect electrochemical capacitor E4 negative pole, electrochemical capacitor E4 positive pole connects pyroelectricity and controls special integrated chip IC2 pin 14 after resistance R 13, pyroelectricity is controlled special integrated chip IC2 pin 15 and is connect electrochemical capacitor E5 positive pole, electrochemical capacitor E5 negative pole connects power supply ground, pyroelectricity is controlled special integrated chip IC2 pin 14 respectively through resistance R 12, capacitor C 7 connects pyroelectricity and controls special integrated chip IC2 pin 16, pyroelectricity is controlled special integrated chip IC2 pin 5 and is connect power supply ground, pyroelectricity is controlled special integrated chip IC2 pin 13 and is met power vd D,
Described signal transmitting main circuit will be by resistance R 14, resistance R 15, resistance R 18, resistance R 22, capacitor C 18, capacitor C 20, triode T1, triode T2 form, resistance R 14 is connected with the base stage of triode T1, resistance R 15 is connected with the collector electrode of triode T1 with the base stage of triode T2, the grounded emitter of triode T1, triode T2; The current collection of triode T2 is detectable signal output very.
5. protective earthing type human body infrared induction LED intelligent lamp as claimed in claim 1; it is characterized in that; described earthing device is for to be provided with aluminium shell outward at LED lamp body; prepared screw-bolt hole on it, the wire head of copper conductor connects copper aluminium terminal, wards off tin and process after the deoxidation of copper aluminium terminal; and at terminal surfaces coating conductive paste; at prepared screw-bolt hole place pad tinfoil paper, with bolt, be pressed on shell another termination of copper conductor PE protective wire.
6. protective earthing type human body infrared induction LED intelligent lamp as claimed in claim 1, it is characterized in that, described drive circuit is PWM constant-current control circuit, mainly by power inductance L4, fast recovery diode D10, capacitor C 17, power MOSFET Q2, pwm chip IC1, resistance R 20, resistance R 21, resistance R 23, resistance R 24, formed, pwm chip IC1 works in PWM mode, pwm chip IC1 pin 3 is set peak level, change the incoming level of pwm chip IC1 pin 3, thus linearity light adjusting; Pwm chip IC1 pin 2 is crossed the electric current of LED lamp by outer meeting resistance R23, resistance R 24 sample streams; The threshold level that the level of the incoming level of pwm chip IC1 pin 3 and pwm chip IC1 inner setting is controlled as PWM; Certain moment pwm chip IC1 pin 3 is set level higher than pwm chip IC1 inner setting level, when sample rate current reaches pwm chip IC1 pin 3 setting level, switch-off power MOSFET Q2, when sample rate current is during lower than pwm chip IC1 inner setting level, open power MOSFET Q2, realize in this way PWM constant current and control.
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| CN109587888A (en) * | 2018-12-25 | 2019-04-05 | 浙江阳光照明灯具有限公司 | A kind of induction LED driving circuit |
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| CN202140816U (en) * | 2011-03-03 | 2012-02-08 | 陈长金 | Infrared induction light-emitting diode (LED) fluorescent lamp |
| CN102420521A (en) * | 2010-09-28 | 2012-04-18 | 汤征宁 | Capacitor and inductor conjugated voltage-dropping circuit |
-
2012
- 2012-05-28 CN CN201210167051.4A patent/CN102665362B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010134721A2 (en) * | 2009-05-21 | 2010-11-25 | (주)아크로젠텍 | Multilayer led power factor correction circuit |
| CN201563268U (en) * | 2009-11-04 | 2010-08-25 | 河源市超越光电科技有限公司 | Drive circuit for OLED lamp |
| CN202082869U (en) * | 2010-04-28 | 2011-12-21 | 李文成 | Low-voltage mobile xenon illumination system |
| CN102420521A (en) * | 2010-09-28 | 2012-04-18 | 汤征宁 | Capacitor and inductor conjugated voltage-dropping circuit |
| CN102014557A (en) * | 2010-10-19 | 2011-04-13 | 王子能 | LED dimming power supply |
| CN202140816U (en) * | 2011-03-03 | 2012-02-08 | 陈长金 | Infrared induction light-emitting diode (LED) fluorescent lamp |
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| CN102665362A (en) | 2012-09-12 |
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