CN201142143Y - LED traffic countdown display controller - Google Patents
LED traffic countdown display controller Download PDFInfo
- Publication number
- CN201142143Y CN201142143Y CNU2007201853011U CN200720185301U CN201142143Y CN 201142143 Y CN201142143 Y CN 201142143Y CN U2007201853011 U CNU2007201853011 U CN U2007201853011U CN 200720185301 U CN200720185301 U CN 200720185301U CN 201142143 Y CN201142143 Y CN 201142143Y
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Abstract
The utility model provides an LED traffic countdown display controller which includes a power supply part, a signal detection part, a control part and a display driving part. The power supply part adopts the three-way 220V alternating current which is used by traffic signal lamps, passes through three bridges, and is transformed into the pulsating direct current for the power supply of a direct current switch; the signal detection part includes one signal from each way of the three-way 220V alternating current, and provides the signals to an input pin of a singlechip for displaying time of red, green and yellow signals detected by the singlechip; the control part can automatically distinguish the display time of present red, green and yellow signals by the singlechip to control the next data display, and directly outputs seven-segment-code; and the display driving part singlechip adopts the serial output manner in the numerical display, provides serial data, serial clock, and display latched signals, and respectively sends to ones-place, tens-place red and green display driving boards. The LED traffic countdown display controller has the advantages of convenient connection on-site, low installation cost, simple circuit, low failure rate, easy maintenance and so on.
Description
Technical field
The utility model belongs to a kind of digital display control technology, is used the traffic countdown display controller of shows signal excess time with traffic lights in particular for traffic intersection.
Background technology
Traffic congestion is social serious problems, and when former traffic signals were only used red greenish-yellow signal lamp, the driver did not know the length of signal, therefore starts vehicle when red light becomes green light, and making has one section aperture time, has reduced the percent of pass of crossroad; On the other hand, when green light reddened lamp, it was too late to stop, and rushes signal easily.Many for this reason departments have developed traffic signals countdown equipment, offer automobile driver, show the excess time of traffic signals, for the driver provides parking, the processing time such as slows down, starts.In addition,, can utilize the fine grasp Vehicle Speed of countdown, reduce the parking number of starts, save fuel oil for experienced driver.Because traffic signal system is the equipment of a long-term work, installation site height, heavy traffic simultaneously, the maintenance difficulty that breaks down is big.Yet, present traffic signals countdown equipment exists countdown circuit complexity mostly, the failure rate height, need change the opertaing device of original traffic signal system during installation, increase new problems such as pipeline, not only increase investment, but also strengthened the difficulty of maintenance repair and maintenance, be unfavorable for the application in the actual traffic signal controlling.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide that a kind of cost is low, circuit is simple, fault is few, be convenient to mounted LEDs traffic countdown display controller, so that reduce investment, alleviates the difficulty of maintenance repair and maintenance.
The purpose of this utility model is achieved in that a kind of LED traffic countdown display controller, comprises power pack, input part, control section and display driving part.Three road 220V that power pack adopts traffic lights to use exchange, and through three electric bridges, convert pulsating direct current to, are the power supply of direct-current switch power supply; The signal detecting part branch comprise three road 220V exchange in every pass go out the input pin that a signal is provided to single-chip microcomputer, the demonstration time of the red, green, yellow signal that detects as single-chip microcomputer is used; Control section was controlled video data next time, and is directly exported seven segment code by the demonstration time of the current red, green, yellow signal of the automatic identification of single-chip microcomputer; The numerical value of display driving part single-chip microcomputer shows employing serial output form, and serial data, serial clock, display latch signal are provided, and delivers to individual, ten red and green display driver plate respectively.
The utility model is because three road 220V interchange of adopting traffic lights to use, through three electric bridges, convert pulsating direct current to, power supply for direct-current switch power supply, can be directly installed under the prerequisite that does not increase miscellaneous equipment on original traffic signal system, three tunnel power supplies that only need will offer the signal lamp of present use offer this controller and get final product, and have made things convenient for on-the-spot connection.Adopt Single-chip Controlling, circuit is simple, integrated level is high, and it is minimum that components and parts reach, thereby failure rate is low, and intelligence is strong, can discern the demonstration time of current red, green, yellow signal automatically, as the foundation that shows next time.Reduce equipment investment, alleviate the difficulty of maintenance repair and maintenance.
Description of drawings
Accompanying drawing 1 is this controller circuitry schematic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, LED traffic countdown display controller of the present utility model comprises power pack, input part and display driving part.
Power pack: three road 220V electricity that adopt present traffic lights to use, be connected on the control panel, through three electric bridges, convert the dc pulse electricity to, offer the power supply of direct-current switch power supply as direct-current switch power supply.What guaranteed like this that three road 220V power supplys are that mutual isolation again can be continuous is the direct-current switch power supply power supply.The 5V electricity that direct-current switch power supply provides through a big electric capacity, guarantees that power supply is stable when the conversion of three road 220V electricity, avoids because traffic signals are switched the power supply shake that brings.
Input: every pass goes out signal through isolating TIL117 by photoelectricity after the resistance R in three road 220V electricity, passes through the shaping of 74LS14 again, is provided to the input pin of single-chip microcomputer, the demonstration time of the red, green, yellow signal that detects as single-chip microcomputer.Simultaneously three road detection signals are input in the singlechip controller, as the beginning of the LED counting of single-chip microcomputer and the foundation that led color shows.
Control section: by the demonstration time of the current red, green, yellow signal of the automatic identification of single-chip microcomputer, control video data next time, during demonstration the time directly is translated into seven segment code and exports.Be danger signal when coming, LED shows time that last time, danger signal was gathered counting as countdown; When green was come, LED showed the counting of the time of green collection last time as countdown; When same yellow signal came, LED showed the counting of the time of yellow signal collection last time as countdown.
Display driver: the numerical value of single-chip microcomputer shows employing serial output form, and serial data, serial clock, display latch signal are provided.Divide and be clipped to individual, ten red and green display driver plate.Drive plate adopts 74HC595 as the parallel conversion chip of serial.Make control panel very simple like this to the connection of display board.Adopt antilogical to show the LED seven segment code.
The utility model is owing to adopt the 89C2051 single-chip microcomputer to detect the current demand signal time, and as the clocking value of this signal next time, circulation shows successively.Not needing existing equipment is made any change promptly can installation.89C2051 is that general monolithic machine price is cheap, and exploitation is grasped easily, and therefore the single-chip microcomputer that volume is little makes the exploitation use cost low; Adopt the 89C2051 single-chip microcomputer processing time to calculate, make peripheral cell be reduced to minimum degree, reduced fault; Adopt serially-transmitted data, minimum connection line to make the fault minimum at the display driver plate; Power supply adopts bridge circuit to isolate three signal power sources promptly can not disturb original traffic signal control system again for the display screen power supply continuously.
Claims (4)
1, a kind of LED traffic countdown display controller, comprise power pack, input part, control section and display driving part, it is characterized in that: three road 220V that power pack adopts traffic lights to use exchange, through three electric bridges, convert pulsating direct current to, be the power supply of direct-current switch power supply; The signal detecting part branch comprise three road 220V exchange in every pass go out the input pin that a signal is provided to single-chip microcomputer, the demonstration time of the red, green, yellow signal that detects as single-chip microcomputer is used; Control section was controlled video data next time, and is directly exported seven segment code by the demonstration time of the current red, green, yellow signal of the automatic identification of single-chip microcomputer; The numerical value of display driving part single-chip microcomputer shows employing serial output form, and serial data, serial clock, display latch signal are provided, and delivers to individual, ten red and green display driver plate respectively.
2, traffic countdown display controller according to claim 1 is characterized in that: at direct-current switch power supply output 5V voltage end big electric capacity in parallel.
3, traffic countdown display controller according to claim 1 is characterized in that: the every pass of input part goes out a signal isolates by photoelectricity through resistance, passes through the shaping of 74LS14 again.
4, traffic countdown display controller according to claim 1 is characterized in that: display driving part adopts 74HC595 to finish conversion and the display driver of serial signal to parallel signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201853011U CN201142143Y (en) | 2007-12-28 | 2007-12-28 | LED traffic countdown display controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201853011U CN201142143Y (en) | 2007-12-28 | 2007-12-28 | LED traffic countdown display controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201142143Y true CN201142143Y (en) | 2008-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201853011U Expired - Fee Related CN201142143Y (en) | 2007-12-28 | 2007-12-28 | LED traffic countdown display controller |
Country Status (1)
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| CN (1) | CN201142143Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102750831A (en) * | 2011-04-19 | 2012-10-24 | 上海交大高新技术股份有限公司 | Road traffic signal countdown displaying device |
| CN103150917A (en) * | 2013-03-01 | 2013-06-12 | 余姚市交通标志设施有限公司 | Road traffic signal countdown device |
| CN103680174A (en) * | 2013-12-04 | 2014-03-26 | 无锡安邦电气有限公司 | Low-impact-current high-power-factor energy storage type countdown display circuit |
| CN104091556A (en) * | 2014-07-20 | 2014-10-08 | 保定维特瑞交通设施工程有限责任公司 | Online function testing device of handheld LED traffic digital countdown display unit |
| CN104346941A (en) * | 2014-11-14 | 2015-02-11 | 安徽蓝盾光电子股份有限公司 | Communication learning type countdown timer |
| CN116347706A (en) * | 2023-04-05 | 2023-06-27 | 杭州方千科技有限公司 | Traffic signal lamp power supply and control method |
-
2007
- 2007-12-28 CN CNU2007201853011U patent/CN201142143Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102750831A (en) * | 2011-04-19 | 2012-10-24 | 上海交大高新技术股份有限公司 | Road traffic signal countdown displaying device |
| CN103150917A (en) * | 2013-03-01 | 2013-06-12 | 余姚市交通标志设施有限公司 | Road traffic signal countdown device |
| CN103680174A (en) * | 2013-12-04 | 2014-03-26 | 无锡安邦电气有限公司 | Low-impact-current high-power-factor energy storage type countdown display circuit |
| CN103680174B (en) * | 2013-12-04 | 2015-10-28 | 无锡安邦电气有限公司 | Low dash current high power factor energy storage type countdown display circuit |
| CN104091556A (en) * | 2014-07-20 | 2014-10-08 | 保定维特瑞交通设施工程有限责任公司 | Online function testing device of handheld LED traffic digital countdown display unit |
| CN104091556B (en) * | 2014-07-20 | 2016-04-20 | 保定维特瑞交通设施工程有限责任公司 | Hand-held LED traffic digital countdown display unit function online testing device |
| CN104346941A (en) * | 2014-11-14 | 2015-02-11 | 安徽蓝盾光电子股份有限公司 | Communication learning type countdown timer |
| CN116347706A (en) * | 2023-04-05 | 2023-06-27 | 杭州方千科技有限公司 | Traffic signal lamp power supply and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Dalian Huayelian Automation Co., Ltd. Assignor: Automation Company of Angang Group Contract fulfillment period: 2009.8.1 to 2014.7.31 Contract record no.: 2009210000203 Denomination of utility model: LED traffic countdown display controller Granted publication date: 20081029 License type: Exclusive license Record date: 20090924 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.8.1 TO 2014.7.31; CHANGE OF CONTRACT Name of requester: DALIAN HUAYELIAN AUTOMATION CO., LTD. Effective date: 20090924 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20131228 |