CN204354913U - LED signal lamp failure automatic detection device - Google Patents
LED signal lamp failure automatic detection device Download PDFInfo
- Publication number
- CN204354913U CN204354913U CN201420871242.3U CN201420871242U CN204354913U CN 204354913 U CN204354913 U CN 204354913U CN 201420871242 U CN201420871242 U CN 201420871242U CN 204354913 U CN204354913 U CN 204354913U
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- 238000001514 detection method Methods 0.000 title claims abstract description 9
- 238000005070 sampling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
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- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The utility model provides a kind of LED signal lamp failure automatic detection device, comprise cabin power distribution module, the mouth of cabin power distribution module is connected with the input end of signal lamp switch and relay, the output of relay is connected with ground wire and the input end of DC voltage-stabilizing driving circuit and the input end of AND circuit respectively, the mouth of DC voltage-stabilizing driving circuit is connected with the input end of current sample amplifying circuit, the mouth of current sample amplifying circuit is connected with the input end of AND circuit and the positive pole of LED signal lamp respectively, the negative earth of LED signal lamp, the mouth of AND circuit is connected with one end of meter lamp and buzzer phone, the other end ground connection of meter lamp and buzzer phone, the mouth of AND circuit is connected with one end of indicator light flasher, the other end ground connection of indicator light flasher.The utility model can ensure traffic safety, reports to the police by instrument display and buzzer phone when LED signal lamp fault.
Description
Technical field
The utility model relates to vehicle signal lighting field, is specifically related to a kind of LED signal lamp failure automatic detection device.
Background technology
Automobile signal light, in vehicle drive, communicates the important information of vehicle running state.Because front blinker luminous intensity is lower, rear signal lamp is arranged on vehicle tail, and in driving conditions, chaufeur cannot its fault of Timeliness coverage.Signal lamp is extremely bright, going out to cause rear to follow car chaufeur and pedestrian to make erroneous judgement, thus causes traffic accident.Conventional LED signal driving circuit needs BCM to assist to carry out fault detection, increases BCM and realizes difficulty and cost.
Utility model content
For above-mentioned technical matters, the utility model provides a kind of LED signal lamp failure automatic detection device, reports to the police by instrument display and buzzer phone when LED signal lamp fault.
The utility model provides a kind of LED signal lamp failure automatic detection device, comprise cabin power distribution module with and signal lamp switch, the mouth of cabin power distribution module is connected with one end of signal lamp switch and relay input end, the other end of signal lamp switch is connected with the input end of relay, the mouth of relay is connected with ground wire and the input end of DC voltage-stabilizing driving circuit and the input end of AND circuit respectively, the mouth of DC voltage-stabilizing driving circuit is connected with the input end of current sample amplifying circuit, the mouth of current sample amplifying circuit is connected with the input end of AND circuit and the positive pole of LED signal lamp respectively, the negative earth of LED signal lamp, the mouth of AND circuit is connected with one end of meter lamp and buzzer phone, the other end ground connection of meter lamp and buzzer phone, the mouth of AND circuit is connected with one end of indicator light flasher, the other end ground connection of indicator light flasher.
The utility model structure is simple.When signal lamp switch closes, relay adhesive, power supply lights LED signal lamp through DC voltage-stabilizing driving circuit and current sample amplifying circuit output voltage.Sampling resistor in current sample amplifying circuit obtains sampled voltage, and described sampled voltage exports AND circuit to after current sample amplifying circuit amplifies together with signal lamp switch signal; When switch disconnects, when LED signal fault is open-circuit condition, the main line electric current of sampling resistor is zero, and corresponding amplifier output level upset is low level, warp and door output low level.This low level signal triggers meter lamp and buzzer warning, triggers indicator light flasher work simultaneously, and front vehicle is reminded in steering indicating light flicker, effectively ensures traffic safety.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram
Fig. 2 is the utility model diagram of circuit
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the utility model is described in further detail:
As shown in Figure 1, the utility model provides a kind of LED signal lamp failure automatic detection device, comprise cabin power distribution module with and signal lamp switch, the mouth of cabin power distribution module is connected with one end of signal lamp switch and relay input end, the other end of signal lamp switch is connected with the input end of relay, the mouth of relay is connected with ground wire and the input end of DC voltage-stabilizing driving circuit and the input end of AND circuit respectively, the mouth of DC voltage-stabilizing driving circuit is connected with the input end of current sample amplifying circuit, the mouth of current sample amplifying circuit is connected with the input end of AND circuit and the positive pole of LED signal lamp respectively, the negative earth of LED signal lamp, the mouth of AND circuit is connected with one end of meter lamp and buzzer phone, the other end ground connection of meter lamp and buzzer phone, the mouth of AND circuit is connected with one end of indicator light flasher, the other end ground connection of indicator light flasher.
As shown in Figure 2, when stop lamp switch closes, DC voltage-stabilizing driving circuit obtains the input of 12V voltage signal, amplifies output 5V voltage light LED through DC voltage-stabilizing driving circuit and current sample.Now, LED brake lamp main line electric current is constant I
0, sampling resistor Rs obtains voltage U s.Due to sampling resistor power consumption P=I
0 2rs, the resistance Rs resistance chosen of therefore sampling is less; The voltage U s adopted jointly inputs AND circuit with stop lamp switch signal after amplifier amplifies.
Following table is AND circuit logic true value table:
| Stop lamp switch level | Sampling resistor level | Export with door |
| 0 | 0 | None |
| 1 | 1 | 1 |
| 1 | 0 | 0 |
| 0 | 1 | None |
Stop lamp switch closes, and can be considered that speed-slackening signal is logic high (being designated as " 1 "), otherwise is logic low (being designated as " 0 ").AND circuit operating voltage comes from the input of stop lamp switch signal, therefore this circuit is open fault for detecting LED state.If closed stop lamp switch, in circuit series, LED signal lamp is open circuit, then main line electric current is zero, and corresponding current sample amplifying circuit outgoing level is low level, through AND circuit output low level.This low level signal triggers meter lamp and buzzer warning, simultaneously indicator light flasher work, and front vehicle is reminded in steering indicating light flicker.
Claims (1)
1. a LED signal lamp failure automatic detection device, it is characterized in that comprising cabin power distribution module and signal lamp switch, the mouth of cabin power distribution module is connected with one end of signal lamp switch and relay input end, the other end of signal lamp switch is connected with the input end of relay, the mouth of relay is connected with ground wire and the input end of DC voltage-stabilizing driving circuit and the input end of AND circuit respectively, the mouth of DC voltage-stabilizing driving circuit is connected with the input end of current sample amplifying circuit, the mouth of current sample amplifying circuit is connected with the input end of AND circuit and the positive pole of LED signal lamp respectively, the negative earth of LED signal lamp, the mouth of AND circuit is connected with one end of meter lamp and buzzer phone, the other end ground connection of meter lamp and buzzer phone, the mouth of AND circuit is connected with one end of indicator light flasher, the other end ground connection of indicator light flasher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420871242.3U CN204354913U (en) | 2014-12-31 | 2014-12-31 | LED signal lamp failure automatic detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420871242.3U CN204354913U (en) | 2014-12-31 | 2014-12-31 | LED signal lamp failure automatic detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204354913U true CN204354913U (en) | 2015-05-27 |
Family
ID=53256398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420871242.3U Expired - Fee Related CN204354913U (en) | 2014-12-31 | 2014-12-31 | LED signal lamp failure automatic detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204354913U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108528338A (en) * | 2018-05-31 | 2018-09-14 | 常州机电职业技术学院 | Failure alarm device for automobile lighting signal lamp |
-
2014
- 2014-12-31 CN CN201420871242.3U patent/CN204354913U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108528338A (en) * | 2018-05-31 | 2018-09-14 | 常州机电职业技术学院 | Failure alarm device for automobile lighting signal lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |