CN106781546A - Traffic signal control method - Google Patents
Traffic signal control method Download PDFInfo
- Publication number
- CN106781546A CN106781546A CN201611210088.5A CN201611210088A CN106781546A CN 106781546 A CN106781546 A CN 106781546A CN 201611210088 A CN201611210088 A CN 201611210088A CN 106781546 A CN106781546 A CN 106781546A
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- signal
- plc
- gsm900a
- sensor
- traffic
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
Traffic signal control method, using the AD acquisition modules of PLC, environment carries out digital quantity treatment to external world for data acquisition, acquisition target is the humidity of earth's surface, temperature, temperature sensor, the signal of humidity sensor feedback is the current signal of 4-20mA, corresponding current signal is converted into AD acquisition modules 0 255 concrete numerical value, and it is input into PLC, optical sensor is used to gather intensity of illumination signal to distinguish daytime or night, optical sensor direct feedback is voltage signal, electricity consumption straightening fetches triggering optocoupler, by signal by light-coupled isolation module after, again by signal transmission to PLC；By signal transmission to PLC after, data signal is passed to PC by PLC by GSM900A again, and the LAN constituted with GSM900A realizes the data transfer of multi-to-multi.
Description
Technical field
The invention belongs to intelligent transportation field, it is related to a kind of use multi-signal collaboration treatment, the friendship of Radio Transmission Technology
Logical intelligent control method.
Background technology
With the progress in the development epoch of society, motor vehicle has come into huge numbers of families.Simultaneously also asked to traffic
Topic brings immense pressure.Although being designed with traffic lights at the parting of the ways, this can solve wagon flow and be oriented to problem.But when some
Vehicle very congestion on the direction of crossroad one is waited, and substantially without vehicle on another direction.Because signal lamp
It is unreasonable to cause traffic jam.And traffic accident happens occasionally, although many places are designed with speed-limiting warning board, but due to
The synoptic season factor such as light round the clock, speed limit speed limitation board constant always does not have safety speed-limit effect.And some drivers think
Speed limit is safe speed, does not know that safe speed is affected by many factors but.It is most of to be in many traffic accidents
Because caused by speed is too high.So rational speed-limit warning is extremely important.
The content of the invention
In order to solve the problems, such as the Based Intelligent Control of traffic signals, to realize that the speed limit to section is shown and the display
Speed limit take into account external environment, more fully and intelligence.
To achieve these goals, technical scheme is as follows：A kind of traffic signal control method, is believed using traffic
Number control system is controlled, and method is as follows：Using the AD acquisition modules of PLC, environment is carried out at digital quantity to external world for data acquisition
Reason, acquisition target is humidity, the temperature of earth's surface, and temperature sensor, the signal of humidity sensor feedback are the electric current letter of 4-20mA
Number, corresponding current signal is converted into AD acquisition modules the concrete numerical value of 0-255, and is input into PLC, and optical sensor is used to adopt
To distinguish daytime or night, optical sensor direct feedback is voltage signal to collection illumination strength signal, and electricity consumption straightening fetches tactile
Luminous coupling, by signal by light-coupled isolation module after, then by signal transmission to PLC；By signal transmission to PLC after, PLC is again
Data signal is passed into PC by GSM900A, the LAN constituted with GSM900A realizes the data transfer of multi-to-multi；
PC is received after sensor signal, and signal is analyzed and is processed, to obtain the temperature and humidity of current environment, and
In daytime or night, the quantity situation got on the bus on road is judged further according to the traffic photo for shooting, by the temperature of current environment
The corresponding speed limit of the scope is obtained with the threshold range that the quantity that humidity, daytime or night, road are got on the bus is fallen into, is passed through
Serial ports transfers data to liquid crystal speed limit direction board, and the startup time of red light in traffic lights is adjusted by the quantity that road is got on the bus；Institute
Stating traffic signal control system includes temperature sensor, humidity sensor, optical sensor, AD acquisition modules, light-coupled isolation mould
Block, PLC, traffic lights, camera, GSM900A transmitting terminals, GSM900A receiving terminals, PC, liquid crystal speed limit direction board；The temperature
Sensor, humidity sensor are connected to AD acquisition modules, and AD acquisition modules connect the signal input part of PLC；The illumination
Sensor connects light-coupled isolation module, and light-coupled isolation module connects the signal input part of PLC；The serial ports connection GSM900A hairs of PLC
Penetrate end, GSM900A receiving terminals and receive the transmission signal of GSM900A transmitting terminals, GSM900A transmitting terminals connection PC；PC passes through
RS485 communication modes connect PLC, and PLC connection traffic lights installs the shooting in the both direction of top at the parting of the ways
Head, camera shoots when traffic lights is when red to the vehicle in section, and the liquid crystal speed limit direction board connects PLC, and by PLC
The speed limit of PC output is received, and gives being shown on liquid crystal.
Beneficial effect：Temperature sensor of the invention, humidity sensor, optical sensor can be adopted to ambient parameter
Collection, as the reference of speed limit output, in addition, the structure and mode of signal transmission are improved, it is of the invention to cause
Transmission is suitable for traffic control.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is sensor connection diagram；
Fig. 3 is serial ports connection diagram；
Fig. 4 is PC connection diagrams.
Specific embodiment
A kind of traffic signal control system, including temperature sensor, humidity sensor, optical sensor, AD acquisition modules,
Light-coupled isolation module, PLC, traffic lights, camera, GSM900A transmitting terminals, GSM900A receiving terminals, PC, liquid crystal speed limit are indicated
Board；The temperature sensor, humidity sensor are connected to AD acquisition modules, and AD acquisition modules connect the signal input of PLC
End；The optical sensor connects light-coupled isolation module, and light-coupled isolation module connects the signal input part of PLC；The serial ports of PLC connects
Connect the transmission signal that GSM900A transmitting terminals, GSM900A receiving terminals receive GSM900A transmitting terminals, GSM900A transmitting terminals connection PC
Machine；PC connects PLC by RS485 communication modes, and PLC connection traffic lights is pacified in the both direction of top at the parting of the ways
The camera is filled, camera shoots when traffic lights is when red to the vehicle in section, the liquid crystal speed limit direction board connection
PLC, and the speed limit that PC is exported is received by PLC, and give being shown on liquid crystal.
In the present embodiment, a kind of traffic signal control method, is controlled using above-mentioned traffic signal control system, side
Method is as follows：Using the AD acquisition modules of PLC, environment carries out digital quantity treatment to external world for data acquisition, and acquisition target is wet for earth's surface
Degree, temperature, temperature sensor, the signal of humidity sensor feedback are the current signal of 4-20mA, and AD acquisition modules will be corresponding
Current signal is converted into the concrete numerical value of 0-255, and is input into PLC, and optical sensor is used to gather intensity of illumination signal to distinguish
Daytime or night, optical sensor direct feedback is voltage signal, and electricity consumption straightening fetches triggering optocoupler, by signal by optocoupler
After isolation module, then by signal transmission to PLC；By signal transmission to PLC after, PLC again by data signal pass through GSM900A
PC is passed to, the LAN constituted with GSM900A realizes the data transfer of multi-to-multi；PC receive sensor signal it
Afterwards, signal is analyzed and is processed, to obtain the temperature and humidity of current environment, and in daytime or night, further according to
The traffic photo of shooting judges the quantity situation got on the bus on road, by the temperature and humidity of current environment, daytime or night, Lu Shang
The threshold range that the quantity of car is fallen into obtains the corresponding speed limit of the scope, and transferring data to liquid crystal by serial ports limits
Fast direction board, and the startup time of red light in traffic lights is adjusted by the quantity that road is got on the bus.In the present embodiment, at multi-sensor cooperation
Manage and by wireless data transmission technology, calculate the optimal speed per hour in road surface using PC, it is ensured that motor vehicle can drive safely.And
And traffic lights duration is sometimes unreasonable, the number of car is judged by labview image recognition technologys, so as to set red green
Lamp duration.3 sensor emission nodes are placed on every street, each node transmits a signal to PC, and PC is by meter
Calculation calculates average value, draws the average humiture on this section of way, further according to the black daytime signal of sensor feedback, calculates this section
The warning sign speed on road.Camera is placed in top at the parting of the ways in the two directions, and the vehicle when red light to section enters
Row shoots.Red time next time is set by the stop quantity of car of this red light.
The above, the protection domain of only the invention preferably specific embodiment, but the invention is not
Be confined to this, any one skilled in the art in the technical scope that the invention is disclosed, according to the present invention
The technical scheme of creation and its inventive concept are subject to equivalent or change, should all cover the invention protection domain it
It is interior.
Claims (1)
1. a kind of traffic signal control method, it is characterised in that be controlled using traffic signal control system, method is as follows：
Using the AD acquisition modules of PLC, environment carries out digital quantity treatment to external world for data acquisition, and acquisition target is humidity, the temperature of earth's surface
Degree, temperature sensor, the signal of humidity sensor feedback are the current signal of 4-20mA, and AD acquisition modules are by corresponding electric current
Signal is converted into the concrete numerical value of 0-255, and is input into PLC, and optical sensor is used to gather intensity of illumination signal to distinguish daytime
Or night, optical sensor direct feedback is voltage signal, and electricity consumption straightening fetches triggering optocoupler, by signal by light-coupled isolation
After module, then by signal transmission to PLC；By signal transmission to PLC after, PLC again by data signal by GSM900A transmit
To PC, the LAN constituted with GSM900A realizes the data transfer of multi-to-multi；PC is received after sensor signal,
Signal is analyzed and processed, to obtain the temperature and humidity of current environment, and in daytime or night, further according to shooting
Traffic photo judge the quantity situation got on the bus on road, got on the bus by the temperature and humidity of current environment, daytime or night, road
The threshold range that quantity is fallen into obtains the corresponding speed limit of the scope, and transferring data to liquid crystal speed limit by serial ports refers to
Show board, and the startup time of red light in traffic lights is adjusted by the quantity that road is got on the bus；The traffic signal control system includes temperature
Sensor, humidity sensor, optical sensor, AD acquisition modules, light-coupled isolation module, PLC, traffic lights, camera,
GSM900A transmitting terminals, GSM900A receiving terminals, PC, liquid crystal speed limit direction board；The temperature sensor, humidity sensor difference
AD acquisition modules are connected to, AD acquisition modules connect the signal input part of PLC；The optical sensor connects light-coupled isolation mould
Block, light-coupled isolation module connects the signal input part of PLC；The serial ports connection GSM900A transmitting terminals of PLC, GSM900A receive termination
Receive the transmission signal of GSM900A transmitting terminals, GSM900A transmitting terminals connection PC；PC connects PLC by RS485 communication modes,
PLC connects traffic lights, and the camera is installed in the both direction of top at the parting of the ways, and camera is red light in traffic lights
Vehicle when bright to section shoots, and the liquid crystal speed limit direction board connects PLC, and receives the speed limit that PC is exported by PLC, and
Give being shown on liquid crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611210088.5A CN106781546A (en) | 2016-12-24 | 2016-12-24 | Traffic signal control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611210088.5A CN106781546A (en) | 2016-12-24 | 2016-12-24 | Traffic signal control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106781546A true CN106781546A (en) | 2017-05-31 |
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ID=58920242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611210088.5A Pending CN106781546A (en) | 2016-12-24 | 2016-12-24 | Traffic signal control method |
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| Country | Link |
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| CN (1) | CN106781546A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637157A (en) * | 2018-12-18 | 2019-04-16 | 安徽科力信息产业有限责任公司 | A kind of traffic signal control system and control method based on power line carrier communication |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201716860U (en) * | 2010-05-13 | 2011-01-19 | 付少华 | Traffic signal light control system |
| CN202008757U (en) * | 2010-11-05 | 2011-10-12 | 天津工业大学 | PLC (programmable logic controller) simulation control experimental plate |
| CN203179290U (en) * | 2012-11-29 | 2013-09-04 | 陕西灵彩信源信息技术有限公司 | Intelligent traffic light controlling device |
| CN103337184A (en) * | 2013-07-11 | 2013-10-02 | 上海济安交通工程咨询有限公司 | Urban road speed limiting indication system based on time, traffic flow and weather and control method |
| CN204614215U (en) * | 2015-03-30 | 2015-09-02 | 江苏金通交通器材有限公司 | Traffic light control system |
| CN205140212U (en) * | 2015-04-16 | 2016-04-06 | 支录奎 | Variable speed limit synchronous control system of highway |
| CN105608914A (en) * | 2016-03-17 | 2016-05-25 | 佛山市高明区云大机械科技有限公司 | Traffic control system based on traffic flow |
-
2016
- 2016-12-24 CN CN201611210088.5A patent/CN106781546A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201716860U (en) * | 2010-05-13 | 2011-01-19 | 付少华 | Traffic signal light control system |
| CN202008757U (en) * | 2010-11-05 | 2011-10-12 | 天津工业大学 | PLC (programmable logic controller) simulation control experimental plate |
| CN203179290U (en) * | 2012-11-29 | 2013-09-04 | 陕西灵彩信源信息技术有限公司 | Intelligent traffic light controlling device |
| CN103337184A (en) * | 2013-07-11 | 2013-10-02 | 上海济安交通工程咨询有限公司 | Urban road speed limiting indication system based on time, traffic flow and weather and control method |
| CN204614215U (en) * | 2015-03-30 | 2015-09-02 | 江苏金通交通器材有限公司 | Traffic light control system |
| CN205140212U (en) * | 2015-04-16 | 2016-04-06 | 支录奎 | Variable speed limit synchronous control system of highway |
| CN105608914A (en) * | 2016-03-17 | 2016-05-25 | 佛山市高明区云大机械科技有限公司 | Traffic control system based on traffic flow |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637157A (en) * | 2018-12-18 | 2019-04-16 | 安徽科力信息产业有限责任公司 | A kind of traffic signal control system and control method based on power line carrier communication |
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Application publication date: 20170531 |
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