CN102045919A - LED light source self-diagnosis protection system - Google Patents
LED light source self-diagnosis protection system Download PDFInfo
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- CN102045919A CN102045919A CN2010102619906A CN201010261990A CN102045919A CN 102045919 A CN102045919 A CN 102045919A CN 2010102619906 A CN2010102619906 A CN 2010102619906A CN 201010261990 A CN201010261990 A CN 201010261990A CN 102045919 A CN102045919 A CN 102045919A
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- led light
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Abstract
The invention discloses a light emitting diode (LED) light source self-diagnosis protection system. The system consists of an LED light source and a central controller which is connected with the LED light source, wherein a set of LED light source is provided with a plurality of LED particles; the LED particles are connected with one another by a parallel connection and series connection combination method; each parallel connection group of LED particles serve as an LED light group; a triode is connected in parallel with the side of each parallel connection LED light group, and the resistance R*1 and the resistance R*2 of the triode are adjusted; and the equivalent resistance of the triode after the triode is switched on is the same as the original internal resistance of the LED light group. By the system, the set of LED light source still can be operated normally under the condition that a part of LED particles are damaged, the service life of the entire LED light source is prolonged and the cost for the replacement of the LED light source is saved.
Description
Technical field
The present invention relates to a kind of damage self diagnosis of LED lighting source and the system of protection.
Background technology
The LED illumination becomes prospect by the consistent emerging light source of having an optimistic view of with its low energy consumption, high-luminous-efficiency.Along with the proposition of national low-carbon economy, led light source can be used widely and be promoted undoubtedly.But shortcoming be cost than the conventional light source height, often can have under the situation of damage at a certain LED particle can't operate as normal for led light source, causes changing the whole LED light source, causes waste.
Summary of the invention
The present invention is for solving the easy wasting difficult problem of above-mentioned LED lighting source in the prior art; a kind of led light source self diagnosis protection system is proposed; design one cover protective circuit, part LED particle has that the assurance system still can operate as normal under the situation of damage in a cover led light source.
The present invention for the technical scheme that solves the deficiencies in the prior art employing is: system is made up of led light source part and connected central controller; In the one cover led light source several LED particles are arranged, the method that adopts parallel connection and serial connection to combine between the LED particle, each and joint group LED particle are regarded a LED light group as, other LED particles still can be worked when a LEDs particle damages, just this LED light group resistance has produced variation, triode in parallel is again adjusted triode resistance R x1, Rx2 on each parallel connection LED light group next door, can make the equivalent resistance after the triode conducting identical with the former internal resistance of this LED light group.
Central controller comprises microprocessor and peripheral coupled constant current unit, constant voltage unit, fault alarm unit.Microprocessor adopts 8 single-chip microcomputer 9S08AW32 of freescale, is that the automotive grade chip can satisfy the adverse circumstances job requirement, contains 16 road 10AD conversion, and PORT COM such as I2C can satisfy requirement herein; The constant current unit adopt chip MAX16824 have three road 36V specified, open with Louing, constant current suction fan-out capability. can go here and there LED light group independently to three drive current up to 150mA is provided, and can provide three road PWM light modulations input, respectively go here and there the brightness of LED light group to be used for independent control, and changeable conducting and shutoff of respectively going here and there LED light group; The constant voltage unit is in order to satisfy the needs of single-chip microcomputer and constant current chip operation, and chip used is infineon company's T LE6389, has main output and closes, and exports under-voltage time-delay and restarts functions such as short-circuit protection.The fault alarm unit comprises buzzer and group of four figures pipe, can demonstrate fault LED light group group number numbering according to predefined.
The invention has the beneficial effects as follows: the situation that a cover led light source has a damage at partial L ED particle still can operate as normal, prolongs the whole LED light source life, saves the expense of changing led light source.
Description of drawings
The present invention will be further described below in conjunction with accompanying drawing and concrete execution mode.
Fig. 1 is a system configuration theory diagram of the present invention.
Fig. 2 is the led light source circuit theory diagrams of the embodiment of the invention.
Fig. 3 is the theory diagram of central controller of the present invention.
Fig. 4 is a constant current element circuit schematic diagram of the present invention.
Fig. 5 is a constant voltage element circuit schematic diagram of the present invention.
Fig. 6 is a fault alarm of the present invention unit theory diagram.
Embodiment
Specify the present invention below in conjunction with embodiment.
The present embodiment system is made up of led light source part and connected central controller; In the one cover led light source 9 LED particles are arranged, the method that adopts parallel connection and serial connection to combine between the LED particle, each and 3 LED particles of joint group are regarded a LED light group as, at each parallel connection LED light group next door triode in parallel again, adjust triode resistance R a1, Ra2 or Rb1, Rb2 or Rc1, Rc2, can make the equivalent resistance after the triode conducting identical with the former internal resistance of this LED light group.
Central controller is seen accompanying drawing 3, comprises microprocessor and peripheral coupled constant current unit, constant voltage unit, fault alarm unit.Microprocessor adopts 8 single-chip microcomputer 9S08AW32 of freescale, is that the automotive grade chip can satisfy the adverse circumstances job requirement, contains 16 road 10AD conversion, and PORT COM such as I2C can satisfy requirement herein; The constant current unit see accompanying drawing 4 adopt chip MAX16824 have three road 36V specified, open with Louing, constant current suction fan-out capability. can go here and there LED light group independently to three drive current up to 150mA is provided, and can provide three road PWM light modulations input, respectively go here and there the brightness of LED light group to be used for independent control, and changeable conducting and shutoff of respectively going here and there LED light group; The constant voltage unit is in order to satisfy the needs of single-chip microcomputer and constant current chip operation, and chip used is infineon company's T LE6389, has main output and closes, and export under-voltage time-delay and restart, functions such as short-circuit protection, non-emphasis of the present invention, with reference to the accompanying drawings 5, do not elaborate.The fault alarm unit comprises buzzer and group of four figures pipe, can demonstrate fault LED light group group number numbering according to predefined, non-emphasis of the present invention, and schematic diagram is seen accompanying drawing 6.
Read voltage sample point (Ka during system works during the Chip Microcomputer A cause for gossip of microprocessor, Kb, Kc,) magnitude of voltage, monitor the led light source working condition in real time, when a LEDs particle damages such as A1, its place parallel circuits resistance increases, then corresponding sample amplitude when reproduced raises, single-chip microcomputer reads corresponding situation, can judge the LED light group at fault LED particle place, corresponding single-chip microcomputer is opened the triode base circuit A of this group, make the triode conducting, because the effect of triode has reduced this group resistance again, make that other int LED particles still can be according to original design current operate as normal, this moment buzzer call, charactron shows fault LED light group #.When this group LED particle occurred damaging again when system works on, system closed all LED light groups; This system repeats to move just now when having not on the same group LED particle damage when system works on again, exceeds design until the LED amounts of particles that breaks down and allows the quantity damaged, and system closes all LED light groups.
The present invention is not limited to the foregoing description, and protection scope of the present invention is all classified in any equivalent concepts or change in the technical scope that the present invention discloses as.
Claims (2)
1. led light source self diagnosis protection system is characterized in that: system is made up of led light source part and connected central controller; In the one cover led light source several LED particles are arranged, the method that adopts parallel connection and serial connection to combine between the LED particle, each and joint group LED particle are a LED light group, at each parallel connection LED light group next door triode in parallel again, adjust triode resistance R x1, Rx2, the equivalent resistance after the triode conducting is identical with the former internal resistance of this LED light group; Described central controller comprises microprocessor and peripheral coupled constant current unit, constant voltage unit, fault alarm unit.
2. a kind of led light source self diagnosis protection system as claimed in claim 1 is characterized in that: described microprocessor adopts 8 single-chip microcomputer 9S08AW32 of freescale; Described constant current unit adopts chip MAX16824; Described constant voltage unit chip is infineon company's T LE6389; Described fault alarm unit comprises buzzer and group of four figures pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010261990.6A CN102045919B (en) | 2010-08-25 | 2010-08-25 | LED light source self-diagnosis protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010261990.6A CN102045919B (en) | 2010-08-25 | 2010-08-25 | LED light source self-diagnosis protection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102045919A true CN102045919A (en) | 2011-05-04 |
| CN102045919B CN102045919B (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010261990.6A Expired - Fee Related CN102045919B (en) | 2010-08-25 | 2010-08-25 | LED light source self-diagnosis protection system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102448234A (en) * | 2011-10-13 | 2012-05-09 | 长春东铁通信信号设备有限公司 | Method and device for intelligently controlling high-power LED railway signal lamp |
| CN103292184A (en) * | 2013-06-05 | 2013-09-11 | 苏州惠瑞自动化集成有限公司 | Automatic illuminating system |
| CN106409194A (en) * | 2016-08-25 | 2017-02-15 | 广西小草信息产业有限责任公司 | LED lamp detection system and method |
| CN109050393A (en) * | 2018-06-05 | 2018-12-21 | 宁波市富来电子科技有限公司 | A kind of linear control system of the lights of vehicle component for combined tail lamp function |
| CN114567948A (en) * | 2022-04-01 | 2022-05-31 | 山东华天电气有限公司 | Energy-saving and high-reliability partitioned series light source driving circuit and working method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050174065A1 (en) * | 1995-06-26 | 2005-08-11 | Jij, Inc. | LED light strings |
| CN1889803A (en) * | 2005-06-27 | 2007-01-03 | 深圳市中电照明有限公司 | LED load protector line |
| US20070247868A1 (en) * | 2006-04-19 | 2007-10-25 | Cindex Holdings Limited | Light string |
| CN101158451A (en) * | 2006-10-02 | 2008-04-09 | 文图文研究及发展公司 | LED lamp string |
-
2010
- 2010-08-25 CN CN201010261990.6A patent/CN102045919B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050174065A1 (en) * | 1995-06-26 | 2005-08-11 | Jij, Inc. | LED light strings |
| CN1889803A (en) * | 2005-06-27 | 2007-01-03 | 深圳市中电照明有限公司 | LED load protector line |
| US20070247868A1 (en) * | 2006-04-19 | 2007-10-25 | Cindex Holdings Limited | Light string |
| CN101158451A (en) * | 2006-10-02 | 2008-04-09 | 文图文研究及发展公司 | LED lamp string |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102448234A (en) * | 2011-10-13 | 2012-05-09 | 长春东铁通信信号设备有限公司 | Method and device for intelligently controlling high-power LED railway signal lamp |
| CN103292184A (en) * | 2013-06-05 | 2013-09-11 | 苏州惠瑞自动化集成有限公司 | Automatic illuminating system |
| CN106409194A (en) * | 2016-08-25 | 2017-02-15 | 广西小草信息产业有限责任公司 | LED lamp detection system and method |
| CN109050393A (en) * | 2018-06-05 | 2018-12-21 | 宁波市富来电子科技有限公司 | A kind of linear control system of the lights of vehicle component for combined tail lamp function |
| CN109050393B (en) * | 2018-06-05 | 2023-05-05 | 宁波市富来电子科技有限公司 | Linear control system for vehicle light assembly with combined tail lamp function |
| CN114567948A (en) * | 2022-04-01 | 2022-05-31 | 山东华天电气有限公司 | Energy-saving and high-reliability partitioned series light source driving circuit and working method thereof |
| CN114567948B (en) * | 2022-04-01 | 2024-03-12 | 山东华天电气有限公司 | Energy-saving high-reliability partitioned series light source driving circuit and working method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102045919B (en) | 2014-07-23 |
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