CN203416478U - Intelligent system for controlling luminance of LED lamp - Google Patents

Intelligent system for controlling luminance of LED lamp Download PDF

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Publication number
CN203416478U
CN203416478U CN201320525442.9U CN201320525442U CN203416478U CN 203416478 U CN203416478 U CN 203416478U CN 201320525442 U CN201320525442 U CN 201320525442U CN 203416478 U CN203416478 U CN 203416478U
Authority
CN
China
Prior art keywords
led
led lamp
microcontroller
converter
temperature detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320525442.9U
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Chinese (zh)
Inventor
罗锦贵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SICHUAN FESTALIGHT PHOTOELECTRIC CO Ltd
Original Assignee
SICHUAN FESTALIGHT PHOTOELECTRIC CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SICHUAN FESTALIGHT PHOTOELECTRIC CO Ltd filed Critical SICHUAN FESTALIGHT PHOTOELECTRIC CO Ltd
Priority to CN201320525442.9U priority Critical patent/CN203416478U/en
Application granted granted Critical
Publication of CN203416478U publication Critical patent/CN203416478U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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 an intelligent system for controlling the luminance of an LED lamp, and the system comprises a microcontroller, an environment brightness sensor, a temperature detector, a timer, and an LED driving module. The environment brightness sensor is connected with the microcontroller sequentially through an A/D converter a and an amplification circuit a. The temperature detector is connected with the microcontroller sequentially through an A/D converter b and an amplification circuit b. The timer is directly connected with the microcontroller which is connected with the LED driving module sequentially through an A/D converter and an amplification circuit c. The driving signal output end of the LED driving module is connected with a plurality of LED lamps. The system detects the brightness of the external environment through the environment brightness sensor, thereby controlling the LED driving module to selectively drive LED lamps to work, and reducing energy loss, and saving cost. The temperature of an LED chip inside a lamp is detected in real time through the temperature detector, thereby automatically controlling the luminance of the LED lamps and the working states of a cooling fan. The system is high in automation degree and increases the speed of heat dissipation.

Description

A kind of LED lamp brightness intelligent control system
Technical field
The utility model relates to a kind of LED lamp brightness intelligent control system.
Background technology
LED lamp be called as the 4th generation lighting source or green light source, owing to thering is the features such as energy-saving and environmental protection, the life-span is long, volume is little, be widely used in recent years the fields such as various demonstrations, decoration, backlight, general lighting and urban landscape.
Existing LED lamp also has the following disadvantages: (1) due to LED lamp in use, the electric energy of power supply input all cannot be converted to luminous energy, some electric energy is converted to heat energy, therefore, this will inevitably cause the heatings such as LED chip, and existing solution is mainly, on LED lamp, fin is set, and the temperature of LED chip is reduced, because the radiating rate of fin is slow and limited in one's ability, cannot guarantee the long-term use of LED light fixture; (2) LED chip is carried out to overtemperature protection, be that temperature is while reaching certain value, automatically cut off the power supply of LED lamp, this must bring inconvenience in life, in fact, and when cutting off the electricity supply, LED chips etc. may be affected because of excess Temperature, in addition, need manually to control again opening of LED lamp, intelligent degree is low; (3) existing LED lamp is after switching on power, and its brightness is generally all fixed, and cannot automatically detect external environment brightness, causes energy waste.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of safe, energy-conservation LED lamp brightness intelligent control system is provided, and it can detect external environment brightness, controls the operating state of LED lamp group, reduces energy waste, reduces costs; Can detect in real time LED lamp internal temperature by Temperature Detector, the brightness of the control LED lamp of intelligence; Control radiator fan that can be intelligent, speeds radiating rate.
The purpose of this utility model is achieved through the following technical solutions: a kind of LED lamp brightness intelligent control system, it comprises microcontroller, ambient light sensor, Temperature Detector, timer and LED driver module, ambient light sensor is connected with microcontroller with amplifying circuit a by A/D converter a successively, Temperature Detector is connected with microcontroller with amplifying circuit b by A/D converter b successively, timer is directly connected with microcontroller, microcontroller is connected with LED driver module with amplifying circuit c by D/A converter successively, the driving signal output part of LED driver module is connected with a plurality of LED lamp groups respectively.
Further, this LED lamp brightness intelligent control system also comprises radiator fan and overvoltage protective module, and power supply connects LED driver module by overvoltage protective module, and radiator fan is directly connected with microcontroller.
Concrete, described Temperature Detector is NTC themistor.Described LED lamp group is in series by a plurality of LED lamps.
The beneficial effects of the utility model are:
(1) when LED lamp is normally used, by ambient light sensor, detect external environment brightness, and then control LED driver module and select driving LED lamp group to carry out work, reduce energy waste, cost-saving;
(2) by NTC themistor, detect in real time the temperature of lamp interior LED chip, once there is abnormal temperature, by microprocessor controls LED driver module, reduce the current value of output, and then the brightness of LED lamp is reduced, when guaranteeing the illumination of LED lamp, reduce temperature, realize the intellectuality of LED lamp brightness and control, in addition, radiator fan can improve the radiating rate of light fixture;
(3) interval detection time of Timer Controlling Temperature Detector, after a period of time, Temperature Detector detects temperature and is reduced to safety value, the testing result of combining environmental luminance sensor, control LED driver module current value is returned to the normal value under this brightness conditions, guarantee that brightness is normal;
(4) overvoltage protective module can provide safe voltage for LED driver module, guarantees system safety running.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection range of the present utility model is not limited to the following stated.
As shown in Figure 1, a kind of LED lamp brightness intelligent control system, it comprises microcontroller, ambient light sensor, Temperature Detector, timer, LED driver module, overvoltage protective module and radiator fan, ambient light sensor is connected with microcontroller with amplifying circuit a by A/D converter a successively, Temperature Detector is connected with microcontroller with amplifying circuit b by A/D converter b successively, timer is connected with microcontroller respectively with radiator fan, microcontroller is connected with LED driver module with amplifying circuit c by D/A converter successively, power supply connects LED driver module by overvoltage protective module, the driving signal output part of LED driver module is connected with a plurality of LED lamp groups respectively, respectively with LED lamp group 1, LED lamp group 2 and LED lamp group n are connected, control the working condition of each lamp group.
Concrete, described Temperature Detector is NTC themistor, accuracy of detection is high, has good thermal-shock resistance.Described LED lamp group is in series by a plurality of LED lamps.
Operation principle of the present utility model is as follows: after switching on power, ambient light sensor detects external environment brightness, brightness value converts analog signal to by A/D converter, after amplifying by amplifying circuit a again, send into microcontroller, microcontroller is according to the luminance signal output brightness control signal receiving, brightness control signal is again after the processing by D/A converter and amplifying circuit c, controlling LED driver module selects driving LED lamp group 1 or LED lamp group 2 or LED lamp group n luminous, or drive the Assembled lamp group of a plurality of LED lamp groups luminous, realize the Based Intelligent Control of brightness, reduce energy consumption, cost-saving, Temperature Detector detects the temperature of LED lamp inside in real time, and after temperature detection result is processed by A/D converter and amplifying circuit b, be sent to microcontroller, microcontroller is according to temperature detection result, control the current value that LED driver module reduces output, according to temperature conditions, reduce the brightness output of LED lamp or directly close LED lamp, with this, promote the safety in utilization of LED light fixture.
Through Temperature Detector, detect and learn that LED lamp internal temperature is still at tolerance interval, reduce the brightness of LED lamp, maintain the luminous of LED lamp, see through the fin dissipation operating temperature that LED lamp has itself, and reached need initiatively carry out the benchmark of radiator fan time when temperature, the action of microprocessor controls radiator fan, even, when temperature reaches certain value, system is directly closed LED driver module by microcontroller, LED lamp group temporarily quits work, carry out natural heat dissipation, after a period of time, again carry out temperature confirmation, when temperature reaches normal value, again according to external environment brightness detected value, again driving LED lamp group, continue illumination.

Claims (5)

1. a LED lamp brightness intelligent control system, it is characterized in that: it comprises microcontroller, ambient light sensor, Temperature Detector, timer and LED driver module, ambient light sensor is connected with microcontroller with amplifying circuit a by A/D converter a successively, Temperature Detector is connected with microcontroller with amplifying circuit b by A/D converter b successively, timer is directly connected with microcontroller, microcontroller is connected with LED driver module with amplifying circuit c by D/A converter successively, the driving signal output part of LED driver module is connected with a plurality of LED lamp groups respectively.
2. a kind of LED lamp brightness intelligent control system according to claim 1, is characterized in that: it also comprises radiator fan, and radiator fan is directly connected with microcontroller.
3. a kind of LED lamp brightness intelligent control system according to claim 1, is characterized in that: it also comprises overvoltage protective module, and power supply connects LED driver module by overvoltage protective module.
4. a kind of LED lamp brightness intelligent control system according to claim 1, is characterized in that: described Temperature Detector is NTC themistor.
5. a kind of LED lamp brightness intelligent control system according to claim 1, is characterized in that: described LED lamp group is in series by a plurality of LED lamps.
CN201320525442.9U 2013-08-27 2013-08-27 Intelligent system for controlling luminance of LED lamp Expired - Fee Related CN203416478U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320525442.9U CN203416478U (en) 2013-08-27 2013-08-27 Intelligent system for controlling luminance of LED lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320525442.9U CN203416478U (en) 2013-08-27 2013-08-27 Intelligent system for controlling luminance of LED lamp

Publications (1)

Publication Number Publication Date
CN203416478U true CN203416478U (en) 2014-01-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320525442.9U Expired - Fee Related CN203416478U (en) 2013-08-27 2013-08-27 Intelligent system for controlling luminance of LED lamp

Country Status (1)

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CN (1) CN203416478U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107172758A (en) * 2017-06-29 2017-09-15 中山烨美电子有限公司 A kind of LED illumination drive dynamic control device and method with overtemperature protection
CN107635310A (en) * 2017-09-29 2018-01-26 无锡昊瑜节能环保设备有限公司 A kind of regulator control system for plant illumination
CN111511059A (en) * 2020-04-21 2020-08-07 宁波市富来电子科技有限公司 Vehicle lamp control system for combined headlamp function

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107172758A (en) * 2017-06-29 2017-09-15 中山烨美电子有限公司 A kind of LED illumination drive dynamic control device and method with overtemperature protection
CN107635310A (en) * 2017-09-29 2018-01-26 无锡昊瑜节能环保设备有限公司 A kind of regulator control system for plant illumination
CN111511059A (en) * 2020-04-21 2020-08-07 宁波市富来电子科技有限公司 Vehicle lamp control system for combined headlamp function

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140129

Termination date: 20160827

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