CN103995224A - LED detection system - Google Patents
LED detection system Download PDFInfo
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- CN103995224A CN103995224A CN201410156628.0A CN201410156628A CN103995224A CN 103995224 A CN103995224 A CN 103995224A CN 201410156628 A CN201410156628 A CN 201410156628A CN 103995224 A CN103995224 A CN 103995224A
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Abstract
Disclosed is an LED detection system. The LED detection system comprises an LED light source module, a PWM control module, a driving module, a current detection module and a voltage detection module. The output end of the PWM control module is connected with the input end of the driving module, the first output end of the driving module is connected with the input end of the switch module, the output end of the switch module is connected with the LED light source module, the second output end of the driving module is respectively connected with the detection ends of the current detection module and the voltage detection module, the output end of the voltage detection module is connected with the input end of an electrical isolation module, the output end of the current detection module is connected with the input end of the electrical isolation module, and the output end of the electrical isolation module is connected with the feedback end of the PWM control module for outputting the electric signals of the voltage detection module and the current detection module to the PWM control module. The advantages are as follows: the structure is simple, the output voltages and the output currents of the driving module can be automatically simultaneously detected, the constant voltage output effect of the LED driving module is better, and the service life of an LED is improved.
Description
Technical field
The present invention relates to LED technical field, be specially a kind of LED detection system.
Background technology
Along with LED constantly makes a breakthrough at technical elements, apply more and more extensively, people are optical, electrical to LED, the detection of look parameter has also proposed higher standard.LED drive circuit is widely used as the main circuit of LED light fixture., there is the problem of poor reliability in existing LED detection system complex structure simultaneously.
Summary of the invention
The object of the invention is, for for the problems referred to above, provides a kind of LED detection system reliably.
In order to achieve the above object, the technical scheme that the present invention takes is:
A kind of LED detection system, comprise LED light source module, PWM control module, driver module, current detection module and voltage detection module, the output terminal of described PWM control module is connected with the input end of driver module, the first output terminal of described driver module is connected with the input end of switch module, and the output terminal of switch module is connected with LED light source module; The second output terminal of described driver module is connected with the test side of current detection module and voltage detection module respectively, the input end of electrical isolation module described in the output termination of described voltage detection module; The input end of electrical isolation module described in the output termination of described current detection module; The feedback end of PWM control module described in the output termination of described electrical isolation module, for exporting to PWM control module by the electric signal of described voltage detection module and current detection module.
As preferably, described LED light source inside modules is provided with overvoltage and current foldback circuit.
As preferably, the voltage and current value control driver module that described PWM control module is measured according to voltage detection module and current detection module.
The invention has the beneficial effects as follows: the present invention is simple in structure, can automatically detect output voltage and the output current of driver module simultaneously, make the better effects if of the output constant voltage of LED driver module, improve the serviceable life of LED.
Brief description of the drawings
Fig. 1 is modular structure schematic block diagram of the present invention;
1-LED light source module; 2-switch module; 3-PWM control module; 4-driver module; 5-current detection module; 6-voltage detection module; 7-electrical isolation module.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is illustrated.
As shown in Figure 1, a kind of LED detection system, comprise LED light source module 1, PWM control module 3, driver module 4, current detection module 5 and voltage detection module 6, the output terminal of described PWM control module 3 is connected with the input end of driver module 4, the first output terminal of described driver module 4 is connected with the input end of switch module 2, and the output terminal of switch module 2 is connected with LED light source module 1; The second output terminal of described driver module 4 is connected with the test side of voltage detection module 6 with current detection module 5 respectively, the input end of electrical isolation module 7 described in the output termination of described voltage detection module 6; The input end of electrical isolation module 7 described in the output termination of described current detection module 5; The feedback end of PWM control module 3 described in the output termination of described electrical isolation module 7, for exporting to PWM control module 3 by the electric signal of described voltage detection module 6 and current detection module 5.
Described LED light source module 1 inside is provided with overvoltage and current foldback circuit; The voltage and current value control driver module 4 that described PWM control module 3 is measured according to voltage detection module 6 and current detection module 5.
Such scheme is optimum implementation of the present invention, but is not changing under spiritual background of the present invention, and any improvement of doing, within all dropping on protection scope of the present invention.
Claims (3)
1. a LED detection system, comprise LED light source module, PWM control module, driver module, current detection module and voltage detection module, it is characterized in that, the output terminal of described PWM control module is connected with the input end of driver module, the first output terminal of described driver module is connected with the input end of switch module, and the output terminal of switch module is connected with LED light source module; The second output terminal of described driver module is connected with the test side of current detection module and voltage detection module respectively, the input end of electrical isolation module described in the output termination of described voltage detection module; The input end of electrical isolation module described in the output termination of described current detection module;
The feedback end of PWM control module described in the output termination of described electrical isolation module, for exporting to PWM control module by the electric signal of described voltage detection module and current detection module.
2. a kind of LED detection system according to claim 1, is characterized in that, described LED light source inside modules is provided with overvoltage and current foldback circuit.
3. a kind of LED detection system according to claim 1, is characterized in that, the voltage and current value control driver module that described PWM control module is measured according to voltage detection module and current detection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410156628.0A CN103995224A (en) | 2014-04-18 | 2014-04-18 | LED detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410156628.0A CN103995224A (en) | 2014-04-18 | 2014-04-18 | LED detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103995224A true CN103995224A (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410156628.0A Pending CN103995224A (en) | 2014-04-18 | 2014-04-18 | LED detection system |
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| CN (1) | CN103995224A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044515A (en) * | 2015-07-31 | 2015-11-11 | 苏州玄禾物联网科技有限公司 | LED display screen module test system |
| CN105372604A (en) * | 2015-08-25 | 2016-03-02 | 马瑞利汽车零部件(芜湖)有限公司 | LED automobile lamp test circuit with over-temperature protection instruction function |
| CN105785252A (en) * | 2014-12-26 | 2016-07-20 | Tcl显示科技（惠州）有限公司 | LED backlight driving testing apparatus |
| CN109596963A (en) * | 2018-12-18 | 2019-04-09 | 中国电子科技集团公司第十三研究所 | It is a kind of for detecting the impulse modulation device of junction temperature |
| CN111707455A (en) * | 2020-07-03 | 2020-09-25 | 深圳爱克莱特科技股份有限公司 | Smooth dimming method and system for lamp |
| CN111741570A (en) * | 2020-07-24 | 2020-10-02 | 武汉精立电子技术有限公司 | Voltage adaptive constant current circuit and calibration device and method |
| CN111896855A (en) * | 2020-08-01 | 2020-11-06 | 深圳市尚宏自动化设备有限公司 | LED automatic detection device |
-
2014
- 2014-04-18 CN CN201410156628.0A patent/CN103995224A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785252A (en) * | 2014-12-26 | 2016-07-20 | Tcl显示科技（惠州）有限公司 | LED backlight driving testing apparatus |
| CN105785252B (en) * | 2014-12-26 | 2018-12-21 | 华显光电技术（惠州）有限公司 | LED backlight drives test device |
| CN105044515A (en) * | 2015-07-31 | 2015-11-11 | 苏州玄禾物联网科技有限公司 | LED display screen module test system |
| CN105372604A (en) * | 2015-08-25 | 2016-03-02 | 马瑞利汽车零部件(芜湖)有限公司 | LED automobile lamp test circuit with over-temperature protection instruction function |
| CN105372604B (en) * | 2015-08-25 | 2019-05-07 | 马瑞利汽车零部件(芜湖)有限公司 | A kind of LED car lamp test circuit with overheat protector instruction |
| CN109596963A (en) * | 2018-12-18 | 2019-04-09 | 中国电子科技集团公司第十三研究所 | It is a kind of for detecting the impulse modulation device of junction temperature |
| CN109596963B (en) * | 2018-12-18 | 2021-09-21 | 中国电子科技集团公司第十三研究所 | Pulse modulation device for detecting junction temperature |
| CN111707455A (en) * | 2020-07-03 | 2020-09-25 | 深圳爱克莱特科技股份有限公司 | Smooth dimming method and system for lamp |
| CN111741570A (en) * | 2020-07-24 | 2020-10-02 | 武汉精立电子技术有限公司 | Voltage adaptive constant current circuit and calibration device and method |
| CN111896855A (en) * | 2020-08-01 | 2020-11-06 | 深圳市尚宏自动化设备有限公司 | LED automatic detection device |
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Application publication date: 20140820 |
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| WD01 | Invention patent application deemed withdrawn after publication |