CN202153397U - PLC automatic control system of traffic light - Google Patents
PLC automatic control system of traffic light Download PDFInfo
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- CN202153397U CN202153397U CN2011202920221U CN201120292022U CN202153397U CN 202153397 U CN202153397 U CN 202153397U CN 2011202920221 U CN2011202920221 U CN 2011202920221U CN 201120292022 U CN201120292022 U CN 201120292022U CN 202153397 U CN202153397 U CN 202153397U
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- 230000001105 regulatory effect Effects 0.000 abstract 1
- 210000001774 pressoreceptor Anatomy 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Abstract
The utility model relates to a PLC automatic control system of traffic lights, comprising a central processing unit composed of a central processor, an A/D converter and a D/A converter, a pressure sensor connected with the central processing unit and traffic lights connected with the central processing unit, wherein the pressure sensor is connected with an input end of the PLC, and the traffic lights are connected with an output end of the PLC. The pressure sensor is arranged on the street, the pressure sensor senses pressure, and the traffic lights are regulated and controlled by the central processing unit, that is to say, when no vehicle passes by a green traffic lane, under the regulation and control of the central processing unit, countdown time of the green light is automatically and rapidly reduced, countdown time of the red light is simultaneously reduced, and passing of the vehicles on the red light traffic lane is accelerated; and when a vehicle passes by the green traffic lane, the traffic lights are not influenced by the pressure sensor and are normally operated as usual. By the system, the traffic guidance problem becomes more automatic, more humanized and more flexible.
Description
Technical field
The utility model relates to the PLC control system, specifically is a kind of traffic lights PLC automatic control system.
Background technology
At present, at the urban road traffic lights that the place uses that cross mouthful, all is the operational mode that is set to the set time usually, can carry out the point duty of whole day after the energising.This command lamp substituted traffic-police before the several years and artificially commands, and greatly reduced point duty police's workload and enjoyed vast civic to welcome with regard to Ceng Yin.But just because of this command lamp always with regular time display mode direct traffic; Especially the driver who goes out car night meets similar situation through regular meeting; When even the opposite road does not have vehicle to pass through and yet still step-by-step demonstration of traffic lights; Be in driver on the red light road this moment and can only stop in order not violating the traffic regulations and slowly to wait for, could pass through the crossing after waiting traffic lights to become green, this will certainly prolong the time that drivers drive; Increase drivers' degree of fatigue, even can influence the gentle phychology that drivers drive.
The English full name of PLC is Programmable Logic Controller; Be translated into programmable logic controller (PLC); Be a kind of replacement traditional relay control device, specially under industrial environment, use design and carry out the electronic installation that digital operation is operated through computer technology.In actual application, this device embodies highly versatile, easy to use, advantage such as adaptation is wide, reliability is high, antijamming capability is strong, programming is simple.At present PLC has been widely used in numerous industries such as iron and steel, oil, chemical industry, electric power, building materials, machine-building, automobile at home and abroad, but does not see also that on the lamp hilllock that Lu Yulu crosses mouthful the traffic lights of installing and using band PLC automatic control system are arranged.
Summary of the invention
The goal of the invention of the utility model is a kind of traffic lights PLC automatic control system to be provided to the problems referred to above, is used to solve Yuan Lu and road and crosses mouthful lamp hilllock traffic lights always with the regular time pattern dumb problem of commander that directs traffic and bring thus.
The utility model is realized through following technical scheme: traffic lights PLC automatic control system comprises the CPU of being made up of central processing unit, A/D converter, D/A converter; And the pressure transducer that links to each other with CPU, traffic lights; Wherein, pressure transducer is connected with the input end of PLC; Traffic lights are connected with the output terminal of PLC.
Described central processing unit adopts the CPU224 central processing unit.
Described A/D converter adopts EM231 analog quantity load module and SM322 digital quantity output module.
Described D/A converter adopts SM321 digital quantity input module and EM232 analog output module.
Adopt the good effect of technique scheme: the utility model is through setting pressure receptor on road; When the pressure of pressoreceptor impression is zero, signal is passed to EM231 analog quantity input mould, pass to SM322 digital quantity output module through A/D converter; Pass to the CPU224 central processing unit again; Processing through the CPU224 central processing unit passes to the SM321 digital quantity input module with signal then, passes to the EM232 analog output module through D/A converter; At last signal is passed to traffic lights; Whole process realized the robotization of traffic lights control, thoroughly changed traffic lights in the past always with the regular time situation that directs traffic of pattern; When the pressure of pressoreceptor impression is zero; Even it is very long that the green light countdown time in the traffic lights also has; So also can be automatically reduce fast, also mean that the vehicle drivers that is in the red light highway section has reduced the time of waiting for, accelerated time of passing through, and especially is in the driver of night running simultaneously; Can experience the facility that this automatic control system is brought, whole point duty process highlights robotization more, hommization, flexibility.
Four, description of drawings
Fig. 1 is the synoptic diagram of the utility model;
Fig. 2 is the workflow sketch of the utility model.
Among the figure: 1 central processing unit, 2 A/D converters, 3 D/A converters, 4 pressoreceptors, 5 traffic lights.
Five, embodiment: the utility model is described further below in conjunction with accompanying drawing:
Fig. 1 is the synoptic diagram of the utility model; Fig. 2 is the workflow sketch of the utility model; In conjunction with Fig. 1, shown in Figure 2; Traffic lights PLC automatic control system comprises the CPU of being made up of central processing unit 1, A/D converter 2, D/A converter 3, and the pressure transducer 4 that links to each other with CPU, traffic lights 5.Pressure transducer 4 is connected with the input end of PLC, is used for the input signal to PLC.Traffic lights 5 are connected with the output terminal of PLC, are used to carry out the instruction that PLC sends.
Conveniently implement and consider implementation result, can central processing unit 1 be adopted the CPU224 central processing unit; Can A/D converter 2 be adopted EM231 analog quantity load module and SM322 digital quantity output module; Can D/A converter 3 be adopted SM321 digital quantity input module and EM232 analog output module.
Earlier pressure transducer 4 is installed in the left-hand rotation and Through Lane of road during use, again pressure transducer 4 is connected to the input end of PLC.The output terminal of PLC is connected to traffic lights 5.Energized starts and operating software, according to actual needs, the length of time is set, and sets out in case of on the green light road corresponding during no car the fast jogging speed of green time minimizing, startup then.
When the pressure of the impression of the pressoreceptor on the road of two ends is zero; Be not have vehicle need pass through road on the green light road corresponding, this moment, pressoreceptor can pass to EM231 analog quantity input mould with signal, passed to SM322 digital quantity output module through A/D converter; Pass to the CPU224 central processing unit again from the signal of SM322 digital quantity output module output; Processing through the CPU224 central processing unit passes to the SM321 digital quantity input module with signal then, passes to the EM232 analog output module through D/A converter; At last signal is being passed to traffic lights from the signal of EM232 analog output module output; In this process, very long even the green light countdown time in the traffic lights also has, so also can reduce fast automatically; The time that is in red light simultaneously also can reduce with green light fast; Reduced the stand-by period of the vehicle drivers on the corresponding road of red light, also accelerated passing through the time of these vehicles, this just highlights the robotization more of whole point duty process, hommization, flexibility.
In addition; When the pressure of the pressoreceptor on the road of two ends impression for zero the time, promptly also have vehicle need pass through road on the green light road corresponding, at this moment pressoreceptor also can pass through above-mentioned transmittance process to CPU224 central processing unit transmission signal; The CPU224 central processing unit also can transmit signal to traffic lights; But the signal that transmits is normal operation, and promptly the time normally reduces, as traffic lights in the past.
Claims (4)
1. traffic lights PLC automatic control system; It is characterized in that: this system comprises the CPU of being made up of central processing unit (1), A/D converter (2), D/A converter (3); And the pressure transducer that links to each other with CPU (4), traffic lights (5); Wherein, pressure transducer (4) is connected with the input end of PLC; Traffic lights (5) are connected with the output terminal of PLC.
2. traffic lights PLC automatic control system according to claim 1 is characterized in that: described central processing unit (1) adopts the CPU224 central processing unit.
3. traffic lights PLC automatic control system according to claim 1 is characterized in that: described A/D converter (2) adopts EM231 analog quantity load module and SM322 digital quantity output module.
4. traffic lights PLC automatic control system according to claim 1 is characterized in that: described D/A converter (3) adopts SM321 digital quantity input module and EM232 analog output module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202920221U CN202153397U (en) | 2011-08-12 | 2011-08-12 | PLC automatic control system of traffic light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202920221U CN202153397U (en) | 2011-08-12 | 2011-08-12 | PLC automatic control system of traffic light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202153397U true CN202153397U (en) | 2012-02-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202920221U Expired - Fee Related CN202153397U (en) | 2011-08-12 | 2011-08-12 | PLC automatic control system of traffic light |
Country Status (1)
| Country | Link |
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| CN (1) | CN202153397U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654743A (en) * | 2016-03-07 | 2016-06-08 | 江苏大学 | Crossroad traffic control system and control method thereof |
| CN116311949A (en) * | 2023-05-17 | 2023-06-23 | 山东新众通信息科技有限公司 | Urban traffic intelligent control system |
-
2011
- 2011-08-12 CN CN2011202920221U patent/CN202153397U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654743A (en) * | 2016-03-07 | 2016-06-08 | 江苏大学 | Crossroad traffic control system and control method thereof |
| CN116311949A (en) * | 2023-05-17 | 2023-06-23 | 山东新众通信息科技有限公司 | Urban traffic intelligent control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIAMUSI UNIV. Free format text: FORMER OWNER: WANG RUI Effective date: 20120511 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Rui Inventor after: Wei Wentao Inventor after: Zhao Junying Inventor after: Zhu Xuetong Inventor after: Zhang Zongli Inventor after: Qu Ruomei Inventor after: Cheng Hao Inventor after: Sun Zhiyong Inventor after: Li Meizha Inventor after: Chen Yulin Inventor before: Wang Rui Inventor before: Zhao Junying Inventor before: Zhu Xuetong Inventor before: Zhang Zongli Inventor before: Qu Ruomei Inventor before: Cheng Hao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG RUI ZHAO JUNYING ZHU XUETONG ZHANG ZONGLI QU RUOMEI CHENG HAO TO: WANG RUI ZHAO JUNYING ZHU XUETONG ZHANG ZONGLI QU RUOMEI CHENG HAO SUN ZHIYONG LI MEISHAN CHEN YULIN WEI YUNTAO |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120511 Address after: Xiangyang District Heilongjiang city Jiamusi province 154007 Xuefu Street No. 148 Patentee after: Jiamusi University Address before: 154007 Public Computer Teaching and research department, third school, A school, school, Jiamusi University, Heilongjiang, China Patentee before: Wang Rui |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20120812 |