CN202634846U - Microwave induction light modulator - Google Patents

Microwave induction light modulator Download PDF

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Publication number
CN202634846U
CN202634846U CN2012203134818U CN201220313481U CN202634846U CN 202634846 U CN202634846 U CN 202634846U CN 2012203134818 U CN2012203134818 U CN 2012203134818U CN 201220313481 U CN201220313481 U CN 201220313481U CN 202634846 U CN202634846 U CN 202634846U
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CN
China
Prior art keywords
module
microcontroller
microwave
led
effect transistor
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Expired - Fee Related
Application number
CN2012203134818U
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Chinese (zh)
Inventor
张玉杰
刘蕴
付俊
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Shaanxi University of Science and Technology
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Shaanxi University of Science and Technology
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Priority to CN2012203134818U priority Critical patent/CN202634846U/en
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Publication of CN202634846U publication Critical patent/CN202634846U/en
Expired - Fee Related legal-status Critical Current
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The utility model discloses a microwave induction light modulator which is characterized by mainly comprises a microcontroller, an LED (Light Emitting Diode) constant current drive source module, a voltage stabilization power supply module, a field effect transistor module, a microwave detection module and a brightness detection module, wherein the voltage of the LED constant current drive source module is processed by the voltage stabilization voltage module and provides electric energy for the microwave detection module and the microcontroller, the microcontroller is also connected with the brightness detection module, the LED constant current drive source module is used for transmitting a signal output by the LED constant current drive source module to the field effect transistor module, the microcontroller outputs a PWM (Pulse Width Modulation) control signal to the field effect transistor module, and the field effect transistor module can be used for regulating the brightness of an LED light source. The microwave induction light modulator can be widely applied to an automatic intelligent illumination occasion, and has the advantages of simple structure, lower cost, high efficiency, stable and reliable working, intelligence, energy saving, and environmental friendliness.

Description

A kind of microwave induced dimmer
Technical field
The utility model relates to automation field, is specifically related to a kind of microwave induced dimmer.
Background technology
Along with global resources are exhausted, energy supply is nervous, the greenhouse effect aggravation, and human kind sustainable development faces energy crisis; The flood tide consumption of the energy has caused the serious environmental pollution.Therefore be badly in need of improving energy utilization rate, the total amount that cuts down the consumption of energy reduces carbon emission, sets up harmonious green society.
At present, underground garage adopts independently acoustic control transducer or infrared sensor mostly, but the acoustic control transducer can produce the phenomenon of energy waste, such as, when vehicle or personnel's sound intensity are big, may cause large-scale light source igniting.Infrared sensor can go out the infrared energy variation that object is emitted with non-contact detection, and converts the infrared signal of human body into signal of telecommunication output, but infrared sensor is easy to generate the erroneous judgement phenomenon.When the temperature of vehicle reaches uniform temperature, same infrared sensor also can be personal information with the information of vehicles erroneous judgement, with light source igniting, cause the waste of the energy.
Also have to adopt mainly with fluorescent lamp and incandescent lamp as light source, big and life-span of power consumption lacks, fragile.This defective not only causes the parking lot cost up, also causes a large amount of energy wastes; For the ease of control, adopt the mode of 24 hours continued powers, the mode of subregion control is also taked in the part garage, thereby has influenced lighting quality greatly.
Summary of the invention
Problem such as higher to present underground garage lighting installation energy consumption, that energy waste is serious, control mode is unreliable; The purpose of the utility model is to provide a kind of microwave induced dimmer; This microwave induced dimmer is a core with the microcontroller, has realized following function:
(1) green energy conservation: nobody with do not have under the situation that vehicle moves; The brightness of all light fixtures in garage all remains 10% of its maximum brightness; To keep the normal brightness demand of watch-dog, come farthest to reduce consumption with this to the energy, realize energy-conserving and environment-protective.
(2) automatic intelligent illumination: in underground garage, whether through the Microwave Detector on the light fixture, detecting has vehicle or personnel movement.If detect moving of vehicle or personnel, the LED light fixture is lighted, if in investigative range, there is target to move always, then the LED light fixture continues to be lighted, otherwise gets into the green energy conservation pattern, realizes that intellectuality saves lighting.
(3) for fear of LED brightness by the injury that secretly causes to the human eye to bright sudden change, be soft step by step variation so take the bright dark transformation of LED, reach good vision dimming effect.
To achieve these goals, the technical scheme of the utility model employing is:
A kind of microwave induced dimmer; Mainly form by microcontroller, LED constant-current driving source module, power module of voltage regulation, field effect transistor tube module, Microwave Detector, brightness detection module; The voltage of said LED constant-current driving source module is after the voltage of voltage regulation resume module; For Microwave Detector and microcontroller provide electric energy, said microcontroller also is connected with the brightness detection module, and said LED constant-current driving source module is also given the field effect transistor tube module with LED constant-current driving source output signal conveys; Said microcontroller output pwm control signal is given the field effect transistor tube module, thereby said field effect transistor tube module is to the adjusting of led light source brightness.
Said Microwave Detector is passed to microcontroller with detected target movable signal, and microcontroller obtains the external environment condition illuminance information through the brightness detection module.
Said microcontroller adopts the MSP430 single-chip microcomputer.
Said Microwave Detector is selected the HB100 microwave module for use.
The utlity model has following advantage and good effect:
The utility model can be widely used in automatic intelligent illumination place, and circuit is simple, cost is lower, efficient is high, working stability is reliable, green intelligent energy-conserving and environment-protective.Not only electric energy has been practiced thrift in the conversion from the conventional light source to the led light source; And LED is taked the full brightness pattern when being chosen at people's (car); When unmanned (car), take brightness to have only the low-power consumption mode of 10% full brightness to LED; Further avoid energy waste, reached the high-performance electricity-saving effect of environmental protection.
Problems such as underground garage power consumption, control mode are unreasonable, poor reliability have not only been solved.And the high efficiency smart management in garage, make the vitality in city more active, social effect and benefit are good.Not only improved the efficiency of management of underground garage, also improved the service quality of underground garage greatly, and then improved the managerial skills in parking lot, had broad application prospects.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the circuit structure diagram of field effect transistor tube module.
Concrete implementation
In the face of the structural principle of the utility model, operation principle is described further down.
With reference to Fig. 1; A kind of microwave induced dimmer; Mainly form by microcontroller, LED constant-current driving source module, power module of voltage regulation, field effect transistor tube module, Microwave Detector, brightness detection module; The voltage of said LED constant-current driving source module is after the voltage of voltage regulation resume module; For Microwave Detector and microcontroller provide electric energy, said microcontroller also is connected with the brightness detection module, and said LED constant-current driving source module is also given the field effect transistor tube module with LED constant-current driving source output signal conveys; Said microcontroller output pwm control signal is given the field effect transistor tube module, thereby said field effect transistor tube module is to the adjusting of led light source brightness.
Said Microwave Detector is passed to microcontroller with detected target movable signal, and microcontroller obtains the external environment condition illuminance information through the brightness detection module.
Said microcontroller adopts the MSP430 single-chip microcomputer.
Said Microwave Detector is selected the HB100 microwave module for use.
With reference to Fig. 2, the pwm control signal of microcontroller output is through the base stage B of resistance R 3 access triodes, and pwm signal is controlled the conducting of triode and ended.When base stage B adds positive bias, triode Q1 conducting, at this moment, the voltage Vgs between the grid source of field-effect transistor is a negative voltage, the field-effect transistor conducting from drain D output LED driving current signal, thereby reaches the purpose of lighting LED.The duty ratio of pwm signal is depended in the brightness of LED, just can control the average driving current of LED through the duty ratio that changes pwm signal, thereby realizes the adjusting of LED brightness.When base stage B added back bias voltage, triode Q1 ended, and caused field-effect transistor closed, the output of drain D no signal current, and LED extinguishes.
The Microwave Detector that the utility model adopts is the HB100 microwave module, and the HB100 microwave module is the microwave mobile object detector that utilizes Doppler radar (Doppler Radar) principle design.HB100 is the 10.525GHz microwave Doppler radar detedtor of standard, and this detection mode is compared with other detection mode has following advantage: 1, noncontact is surveyed; 2, not influenced by temperature, humidity, noise, air-flow, dust, light etc., be fit to adverse circumstances; 3, anti-radio frequency interference ability is strong; 4, power output is little, and human body is not constituted harm; 5, remote: investigative range is above 20 meters.
The HB100 microwave module is based on Doppler's Design Theory, and this electric wave can be reflected when radio wave is run into object in traveling process, and the reflection wave frequency can change with the mobile status of running into object.If the position of the object that radio wave is run into is fixed, reflect wave frequency so and should equate with the emission wave frequency.If object moves towards the direction of emission, the ripple that then reflects can be compressed, and reflecting wave frequency in other words can increase; Otherwise the reflection wave frequency can reduce thereupon.
Microwave Detector has an output signal; When radially moving with respect to HB100 with certain speed in effective investigative range of object at HB100; Microwave Detector output signal is the pulse signal of certain frequency; When tester's translational speed is high more, then the frequency of output pulse signal is just high more.In the effective investigative range at HB100, do not detect movement of objects, then exporting signal is low level.
The output signal of Microwave Detector connects the external interrupt of microcontroller, and in the effective investigative range at the HB100 microwave module, when target moved, the Microwave Measurement circuit can be exported a square-wave signal.The trailing edge of square-wave signal can trigger microcontroller and produce interruption, and microcontroller is counted the trailing edge of square-wave signal through external counter.If the number of trailing edge is greater than 10; Then judging has target to move in investigative range really; Microcontroller can obtain the illumination of external environment condition through the brightness detection module, if the illumination of external environment condition greater than 150LUX, is not then lighted LED; Otherwise microcontroller output pwm control signal is lighted LED.If the number of trailing edge less than 10, then is judged to be interference signal, in investigative range, there is not target to move, microcontroller does not carry out any processing.
After the LED light fixture was lighted, microcontroller can pass through software delay a period of time, and in delay time, LED is in the state of being lighted always.After time-delay finished, microcontroller judged in investigative range whether also have target to move once more through the Microwave Measurement circuit.If still there is target to move, then LED continues to be lighted, otherwise microcontroller output pwm control signal; Make the brightness of LED reach 10% of full brightness; Satisfy the operate as normal lighting demand and the demand for security of watch-dog, the complete bright power consumption of LED is 18W, when the brightness of LED be merely full brightness 10% the time; Can reach the low-power consumption of about 2W, thereby reach the purpose of energy savings.Thereby realized that in investigative range as long as there is target to move, LED just continues to light, under the situation that driftlessness moves, the brightness of LED is merely 10% of full brightness, reaches the purpose of low-power consumption.
By the injury that secretly causes to the human eye to bright sudden change, is step by step soft variation so take the bright dark transformation of LED for fear of LED brightness, reaches good vision dimming effect.Microcontroller reaches the purpose of controlling the LED drive current step by step through changing the duty ratio of pwm pulse signal step by step, thereby realizes seamlessly transitting of the bright blackout change of LED.
The utility model carries out light modulation through the regulative mode of PWM to LED, and the PWM regulative mode is meant that the pulsed drive waveform that in 1 cycle, uses particular duty cycle comes the mode of driving LED.The average driving current of LED depends on the duty ratio and the LED nominal drive current of impulse waveform, under the situation of fixed L ED nominal drive current, through changing duty ratio, just can change the average driving current of LED, thereby change the output light intensity of LED.
The pwm pulse modulation system has the light modulation high accuracy, it is digital control to be easy to realize, on a large scale in light modulation advantages such as scintillation can not take place.The LED control mode of the utility model adopts constant-current driven module as driver; The pwm pulse modulation system is carried out the adjustment of LED voltage; Thereby accurately the Control current size realizes the accurate modulation to LED brightness, accomplishes seamlessly transitting of bright entirely and two kinds of mode of operations of low-power consumption.

Claims (4)

1. a microwave induced dimmer is characterized in that, mainly is made up of microcontroller, LED constant-current driving source module, power module of voltage regulation, field effect transistor tube module, Microwave Detector, brightness detection module;
The voltage of said LED constant-current driving source module is after the voltage of voltage regulation resume module; For Microwave Detector and microcontroller provide electric energy; Said microcontroller also is connected with the brightness detection module; Said LED constant-current driving source module is also given the field effect transistor tube module with LED constant-current driving source output signal conveys, and said microcontroller output pwm control signal is given the field effect transistor tube module, thereby said field effect transistor tube module is to the adjusting of led light source brightness.
2. a kind of microwave induced dimmer according to claim 1 is characterized in that said Microwave Detector is passed to microcontroller with detected target movable signal, and microcontroller obtains the external environment condition illuminance information through the brightness detection module.
3. a kind of microwave induced dimmer according to claim 1 is characterized in that, said microcontroller adopts the MSP430 single-chip microcomputer.
4. a kind of microwave induced dimmer according to claim 1 is characterized in that said Microwave Detector is selected the HB100 microwave module for use.
CN2012203134818U 2012-07-02 2012-07-02 Microwave induction light modulator Expired - Fee Related CN202634846U (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014183316A1 (en) * 2013-05-14 2014-11-20 深圳市海骏电子科技有限公司 Microwave induction dimming apparatus for common led driver upgrading
CN104284496A (en) * 2014-10-29 2015-01-14 安徽省科普产品工程研究中心有限责任公司 Street lamp based on MSP430 single-chip microcomputer and control method thereof
WO2016119295A1 (en) * 2015-01-28 2016-08-04 广州光炬智能科技有限公司 Light source driver apparatus
WO2017117953A1 (en) * 2016-01-04 2017-07-13 京东方科技集团股份有限公司 Sensor lamp and drive method therefor
CN108732960A (en) * 2017-04-25 2018-11-02 美的智慧家居科技有限公司 Contactless controlling device and its control method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014183316A1 (en) * 2013-05-14 2014-11-20 深圳市海骏电子科技有限公司 Microwave induction dimming apparatus for common led driver upgrading
CN104284496A (en) * 2014-10-29 2015-01-14 安徽省科普产品工程研究中心有限责任公司 Street lamp based on MSP430 single-chip microcomputer and control method thereof
WO2016119295A1 (en) * 2015-01-28 2016-08-04 广州光炬智能科技有限公司 Light source driver apparatus
US20200128651A1 (en) * 2015-01-28 2020-04-23 Guangzhou Guangju Intelligent Technology Co., Ltd. Light source driving device
US10856392B2 (en) 2015-01-28 2020-12-01 Guangzhou Guangju Intelligent Technology Co., Ltd. Light source driving device
WO2017117953A1 (en) * 2016-01-04 2017-07-13 京东方科技集团股份有限公司 Sensor lamp and drive method therefor
CN108732960A (en) * 2017-04-25 2018-11-02 美的智慧家居科技有限公司 Contactless controlling device and its control method

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121226

Termination date: 20130702

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