CN204029160U - A kind of road traffic signal lamp - Google Patents
A kind of road traffic signal lamp Download PDFInfo
- Publication number
- CN204029160U CN204029160U CN201420469233.1U CN201420469233U CN204029160U CN 204029160 U CN204029160 U CN 204029160U CN 201420469233 U CN201420469233 U CN 201420469233U CN 204029160 U CN204029160 U CN 204029160U
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- circuit
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- microprocessor
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model relates to a kind of road traffic signal lamp, comprises lamp housing and is arranged on LED dot matrix lamp plate, AC power supply module, mu balanced circuit, constant-current drive circuit, input voltage detection circuit, LED driving voltage testing circuit, microprocessor and the fault feedback circuit in lamp housing; The output terminal of described input voltage detection circuit is connected to microprocessor, the output terminal of described AC power supply module electrically connects mutually with mu balanced circuit and constant-current drive circuit respectively, the output terminal of described mu balanced circuit is connected to microprocessor, described constant-current drive circuit is connected to LED dot matrix lamp plate, the input end of described LED driving voltage testing circuit is connected with LED dot matrix lamp plate, and output terminal is connected with microprocessor; Described microprocessor is connected respectively to constant-current drive circuit and fault feedback circuit, and described fault feedback circuit is also connected with signal lamp input line.The utility model can improve the reliability of product, maintainable, and plays the beneficial effect of energy-conserving and environment-protective.
Description
Technical field
The utility model relates to intelligent transportation equipment technical field, particularly relates to a kind of road traffic signal lamp.
Background technology
Current domestic conventional road traffic signal lamp is using LED as light source; than adopting incandescent light source to have very much progress in operation and maintenance; but most product is also only only limitted to simple lightening LED lamp; multiple LED strip is often adopted to join design for cost-saving; both do not done brightness control function and also do not done fault monitoring and protection measure, reliability and the energy-saving effect of traffic lights self are unsatisfactory.Many effort are made for this reason by some producers: or voltage-controlledly fall light function for signal lamp adds, but lack and damage judgement to LED; Or adopt constant voltage mode to be that LED powers, judge LED damaged condition by detecting electric current, but constant voltage mode LED poor work stability, control product batches quality difficulty many.The utility model proposes a kind of technical scheme can solve aforesaid problem simultaneously, is that signal lamp increases brightness control function, and has and correctly judge LED damaged condition and send the function that high impedance feeds back falling under optical mode.
Summary of the invention
In order to solve above-mentioned technical matters, the purpose of this utility model is to provide a kind of road traffic signal lamp, and these traffic lights increase brightness control function, and has and correctly judge LED damaged condition and send the function that high impedance feeds back falling under optical mode.
In order to realize above-mentioned object, the utility model have employed following technical scheme:
A kind of road traffic signal lamp, comprises lamp housing and is arranged on LED dot matrix lamp plate, AC power supply module, mu balanced circuit, constant-current drive circuit, input voltage detection circuit, LED driving voltage testing circuit, microprocessor and the fault feedback circuit in lamp housing; Described LED dot matrix lamp plate comprises the many groups of LED groups be connected in parallel, often organize LED group and comprise a LED and a resistance, described LED and resistance are connected mutually; The input end of described AC power supply module is connected with signal lamp input line respectively with the input end of input voltage detection circuit, the output terminal of described input voltage detection circuit is connected to microprocessor, the output terminal of described AC power supply module electrically connects mutually with mu balanced circuit and constant-current drive circuit respectively, the output terminal of described mu balanced circuit is connected to microprocessor, described constant-current drive circuit is connected to LED dot matrix lamp plate, the input end of described LED driving voltage testing circuit is connected with LED dot matrix lamp plate, and output terminal is connected with microprocessor; Described microprocessor is connected respectively to constant-current drive circuit and fault feedback circuit, and described fault feedback circuit is also connected with signal lamp input line.
Preferably: described microprocessor is ST12C4052AD, AC power supply module adopts 35W/220V AC Switching Power Supply, input voltage detection circuit adopts optical coupler EL817, and the amplifier of driving voltage testing circuit adopts LM2904, and mu balanced circuit adopts LM7805 three terminal regulator.
The AC supply voltage of input voltage detection circuit described in the utility model to input detects, and microprocessor controls constant-current supply output according to the different brackets of input voltage and realizes LED brightness regulation.Described LED driving voltage testing circuit carries out examine and debug amplification to LED terminal voltage, and microprocessor judges that flowing through single led average current carrys out detection failure accordingly.Described microprocessor is by arranging the judgement thresholding under different current condition, and realizing light fixture can accurately judge LED fault under different LED luminance conditions; At microprocessor, described fault feedback circuit detects that LED fault is triggered when exceeding certain thresholding, make light fixture input impedance show as high impedance status and continue to keep.
The benefit that the utility model brings after have employed above-mentioned technical scheme: signal lamp onboard led adopts current constant mode to drive, and each LED has a resistance as protection, extends the serviceable life of light fixture; Have the brightness regulation by regulating the mode of input voltage to realize LED, traffic signal controlling machine can carry out falling light by control signal lamp night, lowers energy consumption; Owing to have employed microprocessor, realize under different brightness conditions the judgement of LED failure condition, and can when fault LED runs up to a certain degree trigger fault feedback circuit, traffic signal controlling machine correctly can judge whether light fixture damages, to safe handling signal lamp be beneficial to.As can be seen here, employing of the present utility model can improve the reliability of product, maintainable, and plays the beneficial effect of energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is made a detailed explanation.
A kind of road traffic signal lamp as shown in Figure 1, comprises lamp housing and is arranged on LED dot matrix lamp plate, AC power supply module, mu balanced circuit, constant-current drive circuit, input voltage detection circuit, LED driving voltage testing circuit, microprocessor and the fault feedback circuit in lamp housing; Described LED dot matrix lamp plate comprises the many groups of LED groups be connected in parallel, often organize LED group and comprise a LED and a resistance, described LED and resistance are connected mutually; The input end of described AC power supply module is connected with signal lamp input line respectively with the input end of input voltage detection circuit, the output terminal of described input voltage detection circuit is connected to microprocessor, the output terminal of described AC power supply module electrically connects mutually with mu balanced circuit and constant-current drive circuit respectively, the output terminal of described mu balanced circuit is connected to microprocessor, described constant-current drive circuit is connected to LED dot matrix lamp plate, the input end of described LED driving voltage testing circuit is connected with LED dot matrix lamp plate, and output terminal is connected with microprocessor; Described microprocessor is connected respectively to constant-current drive circuit and fault feedback circuit, and described fault feedback circuit is also connected with signal lamp input line.
Signal lamp input line is signal lamp plant-grid connection AC power supply module and input voltage detection circuit; AC power supply module exports a road and connects constant-current drive circuit supply LED dot matrix lamp plate, and another road connects mu balanced circuit; Mu balanced circuit exports 5V direct current supply microprocessor; Microprocessor connects constant-current drive circuit control end, is controlled the size of output current by this control end, thus the brightness of control signal lamp.
Voltage levels in input voltage detection circuit detection signal lamp input line, this testing circuit every the detection output signal duty cycle signals of alternating voltage under different brackets condition, and flows to microprocessor this signal by optocoupler; Microprocessor measures applied signal voltage grade according to duty cycle signals, and the output of Threshold Control Method constant-current supply according to setting; LED driving voltage testing circuit detects the voltage signal outputting to LED dot matrix lamp plate, carries out filtering, signal condition is transported to microprocessor analog to digital conversion interface after amplifying; Microprocessor detects LED drive voltage signal size and judges to damage the quantity of LED according to the voltammetric features of LED in conjunction with the size of the continuous current of current output, when LED damage quantity is greater than 50%, microprocessor trigger fault feedback circuit makes signal lamp input impedance present high-impedance state.
Microprocessor mainly carries out two parts work: one is carry out analyzing and processing to input voltage signal, FEEDBACK CONTROL constant current driver module export size thus the brightness of control signal lamp, two is carry out analyzing and processing to LED terminal voltage signal, judge that flowing through single led average current change detects LED fault, finds that catastrophic failure automatic control lamp tool extinguishes; Fault feedback circuit, by Microprocessor S3C44B0X, makes signal lamp present high-impedance state when fault occurs.Software program in described microprocessor all belongs to prior art, and the utility model mainly through the design of hardware circuit, and carries out setting to the parameter in microprocessor and can realize function of the present utility model.
The processor of the present embodiment is ST12C4052AD, AC power supply module adopts 35W/220V AC Switching Power Supply, input voltage detection circuit adopts optical coupler EL817, the amplifier of driving voltage testing circuit adopts LM2904, mu balanced circuit adopts LM7805 three terminal regulator, and LED adopts the colors such as red, yellow, and green as required.
Claims (2)
1. a road traffic signal lamp, is characterized in that: comprise lamp housing and be arranged on LED dot matrix lamp plate, AC power supply module, mu balanced circuit, constant-current drive circuit, input voltage detection circuit, LED driving voltage testing circuit, microprocessor and the fault feedback circuit in lamp housing; Described LED dot matrix lamp plate comprises the many groups of LED groups be connected in parallel, often organize LED group and comprise a LED and a resistance, described LED and resistance are connected mutually; The input end of described AC power supply module is connected with signal lamp input line respectively with the input end of input voltage detection circuit, the output terminal of described input voltage detection circuit is connected to microprocessor, the output terminal of described AC power supply module electrically connects mutually with mu balanced circuit and constant-current drive circuit respectively, the output terminal of described mu balanced circuit is connected to microprocessor, described constant-current drive circuit is connected to LED dot matrix lamp plate, the input end of described LED driving voltage testing circuit is connected with LED dot matrix lamp plate, and output terminal is connected with microprocessor; Described microprocessor is connected respectively to constant-current drive circuit and fault feedback circuit, and described fault feedback circuit is also connected with signal lamp input line.
2. a kind of road traffic signal lamp according to claim 1, it is characterized in that: described microprocessor is ST12C4052AD, AC power supply module adopts 35W/220V AC Switching Power Supply, input voltage detection circuit adopts optical coupler EL817, the amplifier of driving voltage testing circuit adopts LM2904, and mu balanced circuit adopts LM7805 three terminal regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469233.1U CN204029160U (en) | 2014-08-19 | 2014-08-19 | A kind of road traffic signal lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469233.1U CN204029160U (en) | 2014-08-19 | 2014-08-19 | A kind of road traffic signal lamp |
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| Publication Number | Publication Date |
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| CN204029160U true CN204029160U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420469233.1U Expired - Fee Related CN204029160U (en) | 2014-08-19 | 2014-08-19 | A kind of road traffic signal lamp |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107507446A (en) * | 2017-08-25 | 2017-12-22 | 安徽实运信息科技有限责任公司 | A kind of municipal highway traffic signalization operational diagnostics system |
| WO2018091002A1 (en) * | 2016-11-16 | 2018-05-24 | 洪学远 | Novel smart led traffic signal control circuit and control apparatus |
| CN108271291A (en) * | 2017-01-16 | 2018-07-10 | 浙江国自机器人技术有限公司 | One kind is based on the infrared stroboscopic illumination lamp system of CAN bus positioning camera constant current self diagnosis |
| CN114900919A (en) * | 2022-04-12 | 2022-08-12 | 杭州云正科技有限公司 | Fault active alarm traffic signal lamp based on driving chip with self-checking function |
-
2014
- 2014-08-19 CN CN201420469233.1U patent/CN204029160U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018091002A1 (en) * | 2016-11-16 | 2018-05-24 | 洪学远 | Novel smart led traffic signal control circuit and control apparatus |
| US10720052B2 (en) | 2016-11-16 | 2020-07-21 | Hokyuen HUNG | Intelligent control circuit and controller for traffic LED signal lamp |
| CN108271291A (en) * | 2017-01-16 | 2018-07-10 | 浙江国自机器人技术有限公司 | One kind is based on the infrared stroboscopic illumination lamp system of CAN bus positioning camera constant current self diagnosis |
| CN107507446A (en) * | 2017-08-25 | 2017-12-22 | 安徽实运信息科技有限责任公司 | A kind of municipal highway traffic signalization operational diagnostics system |
| CN114900919A (en) * | 2022-04-12 | 2022-08-12 | 杭州云正科技有限公司 | Fault active alarm traffic signal lamp based on driving chip with self-checking function |
| CN114900919B (en) * | 2022-04-12 | 2023-09-26 | 杭州云正科技有限公司 | Fault active alarming traffic signal lamp based on self-checking function |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 311401 Zhejiang Road, Fuyang District, Dongzhou City Industrial Zone, No. seven Dongzhou Road, No. 38 Patentee after: Zhejiang Xinyuan traffic Electronic Co Ltd Address before: Fuchun street of Fuyang city Hangzhou city Zhejiang province 311499 Yingbin Road No. 97 Patentee before: Zhejiang Fuyang Xinyuan Traffic Electronics Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20190819 |