CN104742799B - LED steering lamp control circuit and control method thereof - Google Patents
LED steering lamp control circuit and control method thereof Download PDFInfo
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- CN104742799B CN104742799B CN201510150019.9A CN201510150019A CN104742799B CN 104742799 B CN104742799 B CN 104742799B CN 201510150019 A CN201510150019 A CN 201510150019A CN 104742799 B CN104742799 B CN 104742799B
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- body controller
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- car body
- right turn
- diode
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000006378 damage Effects 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008832 photodamage Effects 0.000 description 1
Abstract
The invention belongs to the field of automobile electronics, and particularly relates to an LED steering lamp control circuit. The LED steering lamp control circuit comprises an automobile body controller, wherein the automobile body controller receives opening and closing signals of a left steering lamp switch and a right steering lamp switch and drives turning on or off of a left steering lamp and a right steering lamp, a detection circuit is arranged among the left steering lamp, the right steering lamp and the automobile body controller and outputs feedback signals to the automobile body controller according to voltage changes of the left steering lamp or the right steering lamp, and the automobile body controller judges whether the left and right steering lamps are damaged or not according to feedback signals and the opening and closing signals of the left and right steering lamp switches. The invention further discloses a control method of the circuit. The detection circuit is additionally arranged to judge whether the LED steering lamps are damaged to not and low in cost. Judgment is based on changes of voltage, wrong judgment is not prone to being made, and the judgment result is quite accurate.
Description
Technical field
The invention belongs to vehicle electric field, particularly to a kind of LED steering indicating light control circuit and
Control method.
Background technology
Owing to moulding needs and the reduction of LED cost, increasing automobile lamp begins to use
LED is as steering indicating light.Use LED less as electric current during steering indicating light, and electric current is along with temperature
Degree, the change of voltage have significant change, cause conventional detection circuitry is difficult to whether circuit be detected
Damage, thus can not effectively remind the state of driver's steering indicating light.Some detections in the market
Method uses special detection module, relatively costly, is unfavorable for the reduction of integral vehicle cost, is badly in need of valency
Detection method that lattice are relatively low and circuit realize by LED as the fault detect of steering indicating light.
Summary of the invention
The primary and foremost purpose of the present invention is to provide a kind of LED steering indicating light control circuit, it is achieved detection merit
Energy and low cost.
For realizing object above, the technical solution used in the present invention is: a kind of LED steering indicating light controls
Circuit, including car body controller, described car body controller receives left steering lamp switch and right turn
The opening and closing signal of lamp switch also drives lighting or extinguishing of left steering lamp and right turn lamp, left steering lamp
And be provided with testing circuit between right turn lamp and car body controller, testing circuit according to left steering lamp or
The change in voltage output feedback signal of right turn lamp is to car body controller, and car body controller is according to feedback
The opening and closing signal of signal and left and right turning indicator control judges whether left and right steering indicating light damages.
Compared with prior art, there is techniques below effect in the present invention: by the detection additionally built
Whether circuit judges LED turning lamp damages, low cost；Meanwhile, sentenced by the change of voltage
Disconnected, it is not likely to produce erroneous judgement, it is judged that result is the most accurate.
Further object is that the controlling party that a kind of LED steering indicating light control circuit is provided
Method, it is achieved detection function and low cost.
For realizing object above, the technical solution used in the present invention is: a kind of LED steering indicating light controls
The control method of circuit, comprise the steps: (A) car body controller receive left steering lamp switch and
The opening and closing signal of right turn lamp switch, when left or right turning indicator control is opened, car body controller drives
Dynamic corresponding side lights is lighted；(B) judge that left steering lamp or right turn lamp the most normally work, turn to
When lamp has damage, testing circuit feedback high level signal in corresponding side is to car body controller；(C) left side is worked as
During the testing circuit output high level that turning indicator control closes and left steering lamp is corresponding, car body controller
Prompting driver's left steering lamp failure；When right turn lamp switch Guan Bi and right turn lamp respective side
During testing circuit output high level, car body controller prompting driver's right turn lamp failure.
Compared with prior art, there is techniques below effect in the present invention: by the detection additionally built
Whether circuit judges LED turning lamp damages, low cost；Meanwhile, sentenced by the change of voltage
Disconnected, it is not likely to produce erroneous judgement, it is judged that result is the most accurate.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the present invention；
Fig. 2 is the circuit diagram of the present invention, wherein only includes one steering indicating light of side testing circuit.
Detailed description of the invention
Below in conjunction with Fig. 1 to Fig. 2, the present invention is described in further detail.
Refering to Fig. 1, a kind of LED steering indicating light control circuit, including car body controller 10, described
Car body controller 10 receives the opening and closing signal of left steering lamp switch 21 and right turn lamp switch 22 also
Drive lighting or extinguishing of left steering lamp 31 and right turn lamp 32, left steering lamp 31 and right turn
Being provided with testing circuit 40 between lamp 32 and car body controller 10, testing circuit 40 is according to left steering
The change in voltage output feedback signal of lamp 31 or right turn lamp 32 is to car body controller 10, vehicle body control
Device 10 processed according to the opening and closing signal of feedback signal and left and right turning indicator control 21,22 judge left,
Whether right turn lamp 31,32 damages.Become by the voltage of left steering lamp 31 or right turn lamp 32
Change, judge whether lamp has damage, the factors of instability in traditional detection mode can be avoided,
Make result of determination the most accurate.
Preferably, described testing circuit 40 has two groups, one of which monitoring left steering lamp 31
Change in voltage, the change in voltage of another group monitoring right turn lamp 32.Described feedback signal be high,
When low level signal, left steering lamp 31 or right turn lamp 32 fault, corresponding detection electricity
Road 40 exports high level signal to car body controller 10.By two groups of testing circuits 40, vehicle body control
Device 10 processed can judge that the lamp of concrete fault is left steering lamp or right turn lamp effectively.Meanwhile,
When feedback signal is high and low level signal, car body controller 10 deals with more convenient.
Refering to Fig. 2, specifically, described left steering lamp 31 includes LED1～LED9, Body Control
The outfan of device 10 is connected with the positive pole of diode D1, the negative pole of diode D1 and LED1, LED4,
The positive pole of LED7 be connected, the negative pole of LED1, LED4, LED7 respectively with LED2, LED5, LED8
Positive pole be connected, the negative pole of LED2, LED5, LED8 is respectively with LED3, LED6, LED9 just
The most connected；One end of resistance R1, R2 in parallel is connected with the negative pole of LED3, other end ground connection,
One end of resistance R3, R4 in parallel is connected with the negative pole of LED6, other end ground connection, electricity in parallel
One end of resistance R5, R6 is connected with the negative pole of LED9, other end ground connection.Right turn lamp 32 is with left
Steering indicating light 31 is arranged equally, is also to be made up of 9 LED, the most just repeats no more.
As the preferred version of the present invention, described testing circuit 40 includes audion Q1, three poles
The colelctor electrode of pipe Q1 is connected by the negative pole of resistance R9 and diode D1, the base stage of audion Q1
It is connected with the negative pole of diode D3；The positive pole of diode D3 is by resistance R7 and diode D1's
Negative pole is connected, and the positive pole of diode D3 positive pole with diode D4, D5, D6 the most respectively is connected,
The negative pole of diode D4, D5, D6 is connected with the negative pole of LED3, LED6, LED9 respectively；Resistance
R8 is connected with emitter stage, the base stage of audion Q1 respectively with the two ends after electric capacity C1 parallel connection, three poles
The emitter stage of pipe Q1 is connected with the positive pole of Zener diode D7, the grounded emitter of audion Q1；
The negative pole of Zener diode D7 be connected with the colelctor electrode of audion Q1 and with the positive pole of diode D8
Being connected, the negative pole of diode D8 passes through resistance R10 ground connection, between diode D8 and resistance R10
Draw a branch road to be connected with car body controller 10.Testing circuit 40 is so set, simple in construction,
Low cost, is also convenient on existing light fixture extension and installs.As the LED of arbitrary road series connection in steering indicating light
When lamp has damage, testing circuit 40 output is all high level, now turns to further according to left or right
The on off state of lamp switch 21,22 judges whether left steering lamp or right turn lamp damage.
Specifically, the control method of a kind of LED steering indicating light control circuit, comprise the steps: (A)
Car body controller 10 receives the opening and closing signal of left steering lamp switch 21 and right turn lamp switch 22,
When left or right turning indicator control 21,22 is opened, car body controller 10 drives corresponding side lights point
Bright；(B) judging that left steering lamp 31 or right turn lamp 32 the most normally work, steering indicating light has damage
Time, corresponding side testing circuit 40 feeds back high level signal to car body controller 10；(C) left-hand rotation is worked as
Close to lamp switch 21 and time the testing circuit 40 of left steering lamp 31 correspondence exports high level, car
Body controller 10 points out driver left steering lamp 31 fault；When right turn lamp switch 22 close,
And the testing circuit 40 of right turn lamp 32 respective side is when exporting high level, car body controller 10 carries
Show driver's right turn lamp 32 fault.In described step C, when left steering lamp 31 or right turn
During lamp 32 fault, car body controller 10 is pointed out by the way of controlling corresponding side steering indicating light installed quick flashing and is driven
The person of sailing.Pass through above step, in that context it may be convenient to LED steering indicating light is controlled and fault cues,
When driver opens corresponding side steering indicating light installed switch, if this side lights has one to break down, just
Can detected circuit 40 detect, now car body controller 10 just drives the LED that this side lights is good
Lamp flashes to point out driver.
Claims (5)
1. a LED steering indicating light control circuit, including car body controller (10), described car body controller (10) receives left steering lamp switch (21) and the opening and closing signal of right turn lamp switch (22) and drives lighting or extinguishing of left steering lamp (31) and right turn lamp (32), it is characterized in that: between left steering lamp (31) and right turn lamp (32) and car body controller (10), be provided with testing circuit (40), testing circuit (40) is according to the change in voltage output feedback signal of left steering lamp (31) or right turn lamp (32) to car body controller (10), car body controller (10) is according to feedback signal and a left side, right turn lamp switch (21, 22) opening and closing signal judges a left side, right turn lamp (31, 32) whether damage；
Described testing circuit (40) has two groups, the change in voltage of one of which monitoring left steering lamp (31), the change in voltage of another group monitoring right turn lamp (32)；
Described left steering lamp (31) includes LED1 ~ LED9, the outfan of car body controller (10) is connected with the positive pole of diode D1, the negative pole of diode D1 is connected with the positive pole of LED1, LED4, LED7, the negative pole of LED1, LED4, LED7 is connected with the positive pole of LED2, LED5, LED8 respectively, and the negative pole of LED2, LED5, LED8 is connected with the positive pole of LED3, LED6, LED9 respectively；One end of resistance R1, R2 in parallel is connected with the negative pole of LED3, other end ground connection, and one end of resistance R3, R4 in parallel is connected with the negative pole of LED6, other end ground connection, and one end of resistance R5, R6 in parallel is connected with the negative pole of LED9, other end ground connection.
2. LED steering indicating light control circuit as claimed in claim 1, it is characterized in that: described feedback signal is high and low level signal, when left steering lamp (31) or right turn lamp (32) fault, corresponding testing circuit (40) output high level signal to car body controller (10).
3. LED steering indicating light control circuit as claimed in claim 1, it is characterized in that: described testing circuit (40) includes audion Q1, the colelctor electrode of audion Q1 is connected by the negative pole of resistance R9 and diode D1, and the base stage of audion Q1 is connected with the negative pole of diode D3；The positive pole of diode D3 is connected by the negative pole of resistance R7 and diode D1, and the positive pole of diode D3 positive pole with diode D4, D5, D6 the most respectively is connected, and the negative pole of diode D4, D5, D6 is connected with the negative pole of LED3, LED6, LED9 respectively；Resistance R8 is connected with emitter stage, the base stage of audion Q1 respectively with the two ends after electric capacity C1 parallel connection, and the emitter stage of audion Q1 is connected with the positive pole of Zener diode D7, the grounded emitter of audion Q1；The negative pole of Zener diode D7 is connected with the colelctor electrode of audion Q1 and is connected with the positive pole of diode D8, and the negative pole of diode D8 passes through resistance R10 ground connection, draws a branch road and be connected with car body controller (10) between diode D8 with resistance R10.
4., for controlling a control method for the LED steering indicating light control circuit described in claim 1, comprise the steps:
(A) car body controller (10) receives left steering lamp switch (21) and the opening and closing signal of right turn lamp switch (22), and when left or right turning indicator control (21,22) is opened, car body controller (10) drives corresponding side lights to light；
(B) judge that left steering lamp (31) or right turn lamp (32) the most normally work, when steering indicating light has damage, corresponding side testing circuit (40) feedback high level signal to car body controller (10)；
(C) when testing circuit (40) the output high level of left steering lamp switch (21) Guan Bi and left steering lamp (31) correspondence, car body controller (10) prompting driver's left steering lamp (31) fault；When testing circuit (40) the output high level of right turn lamp switch (22) Guan Bi and right turn lamp (32) respective side, car body controller (10) prompting driver's right turn lamp (32) fault.
5. the control method of LED steering indicating light control circuit as claimed in claim 4, it is characterized in that: in described step C, when left steering lamp (31) or right turn lamp (32) fault, car body controller (10) points out driver by the way of controlling corresponding side steering indicating light installed quick flashing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510150019.9A CN104742799B (en) | 2015-03-31 | 2015-03-31 | LED steering lamp control circuit and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510150019.9A CN104742799B (en) | 2015-03-31 | 2015-03-31 | LED steering lamp control circuit and control method thereof |
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| Publication Number | Publication Date |
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| CN104742799A CN104742799A (en) | 2015-07-01 |
| CN104742799B true CN104742799B (en) | 2017-01-11 |
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| CN201510150019.9A Active CN104742799B (en) | 2015-03-31 | 2015-03-31 | LED steering lamp control circuit and control method thereof |
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| CN105172678B (en) * | 2015-09-10 | 2017-07-11 | 奇瑞汽车股份有限公司 | Brake lamp Failure Alarm control device |
| CN105120588A (en) * | 2015-09-16 | 2015-12-02 | 奇瑞汽车股份有限公司 | Vehicle LED steering lamp fault feedback circuit |
| CN105346442A (en) * | 2015-12-07 | 2016-02-24 | 埃泰克汽车电子(芜湖)有限公司 | Control circuit for stabilizing feedback of LED direction indicator lamp |
| CN107202287A (en) * | 2016-03-15 | 2017-09-26 | 大陆汽车电子(长春)有限公司 | A kind of LED turns to lamp system and its fault detection method |
| CN106444720A (en) * | 2016-11-14 | 2017-02-22 | 中车青岛四方机车车辆股份有限公司 | Method, device and system for diagnosing faults of rail vehicle lighting system |
| CN108575008A (en) * | 2017-03-27 | 2018-09-25 | 常州星宇车灯股份有限公司 | The control circuit of automobile integrated LED lamp |
| CN107969041B (en) * | 2017-11-24 | 2019-10-08 | 重庆长安汽车股份有限公司 | A kind of LED automobile turns to lamp fault protection circuit and its method |
| CN108082041A (en) * | 2017-12-26 | 2018-05-29 | 广东晶科电子股份有限公司 | A kind of steering indicating light detecting fault system |
| CN108482242A (en) * | 2018-03-09 | 2018-09-04 | 深圳市歌美迪电子技术发展有限公司 | vehicle steering control method, device, vehicle controller and vehicle |
| CN109484298A (en) * | 2018-10-30 | 2019-03-19 | 昆山睿力得软件技术有限公司 | A kind of turn signal working condition and fault monitoring system |
| CN111284391B (en) * | 2018-12-10 | 2023-08-04 | 北京京东乾石科技有限公司 | Vehicle-mounted light control system and vehicle |
| CN110213853B (en) * | 2019-05-06 | 2021-12-24 | 北京汽车股份有限公司 | Steering lamp control method and steering lamp control circuit |
| CN113696836B (en) * | 2021-08-26 | 2023-03-31 | 东风柳州汽车有限公司 | Fault diagnosis circuit and method for steering lamp |
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| JP5201447B2 (en) * | 2008-02-27 | 2013-06-05 | 株式会社小糸製作所 | Vehicle lighting |
| CN201209795Y (en) * | 2008-06-05 | 2009-03-18 | 山东申普汽车控制技术有限公司 | Automobile intelligent taillight with network interface |
| CN101426318A (en) * | 2008-12-09 | 2009-05-06 | 奇瑞汽车股份有限公司 | Detecting, alarming apparatus for LED direction indicating light, detecting, alarming method thereof |
| DE102011113080A1 (en) * | 2011-02-18 | 2012-08-23 | Volkswagen Aktiengesellschaft | Method for diagnosing e.g. tail light unit, of e.g. passenger car, involves detecting voltage potential at diagnostic port terminal of evaluation device, and generating diagnosis information based on detected potential |
| CN202389284U (en) * | 2011-12-01 | 2012-08-22 | 上海同捷科技股份有限公司 | Vehicle steering signal output device |
| CN203198844U (en) * | 2013-02-25 | 2013-09-18 | 徐永茂 | Detection device of LED steering lamp |
| CN103287338A (en) * | 2013-05-29 | 2013-09-11 | 开平市中铝实业有限公司 | Automobile lamp failure monitoring device |
| CN104386003A (en) * | 2014-10-20 | 2015-03-04 | 昆山博文照明科技有限公司 | Vehicle CAN (Controller Area Network) bus controller having functions of fault diagnosis and replacing of steering lamps |
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Application publication date: 20150701 Assignee: Ooros Automotive Co., Ltd. Assignor: Saic Chery Automobile Co., Ltd. Contract record no.: 2017990000380 Denomination of invention: LED steering lamp control circuit and control method thereof Granted publication date: 20170111 License type: Common License Record date: 20170921 |
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Assignee: Ooros Automotive Co., Ltd. Assignor: Saic Chery Automobile Co., Ltd. Contract record no.: 2017990000380 Date of cancellation: 20180910 |
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Application publication date: 20150701 Assignee: Anqing Zhenyi New Energy Automobile Technology Co., Ltd Assignor: Saic Chery Automobile Co., Ltd. Contract record no.: X2020980000116 Denomination of invention: LED steering lamp control circuit and control method thereof Granted publication date: 20170111 License type: Common License Record date: 20200115 |