CN109816996A - Intelligent traffic light control system based on wireless sensor network - Google Patents
Intelligent traffic light control system based on wireless sensor network Download PDFInfo
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- CN109816996A CN109816996A CN201711161519.8A CN201711161519A CN109816996A CN 109816996 A CN109816996 A CN 109816996A CN 201711161519 A CN201711161519 A CN 201711161519A CN 109816996 A CN109816996 A CN 109816996A
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Abstract
A kind of intelligent traffic light control system based on wireless sensor network, improve the quality of perception using multiple sensors are installed on existing lighting electric pole, obtain more accurate vehicle flowrate identification and more accurate data, thus traffic lights conversion time can be automatically adjusted according to vehicle vehicle flowrate passage situation, traffic efficiency is improved, to prevent crossing traffic blocking；At the crossing of the four corners of the world four, one gateway coordinator and main controller are set, gateway coordinator is responsible for the convergence of data, main controller is responsible for controlling gateway coordinator and external network communication and traffic lights control, gateway coordinator and main controller are mounted in the traffic signalization case of intersection, original traffic light controller is controlled by main controller output signal to realize traffic lights conversion time, while main controller can send traffic control center center by 4G/5G module for the collected data of institute；Gateway coordinator can be in communication with each other with the gateway coordinator at crossing around, can learn the vehicle flowrate data at this other crossing in crossing periphery by gateway coordinator in this way, preferably to control traffic lights conversion time, improve vehicle pass-through efficiency.
Description
Technical field
The present invention relates to road transports to monitor field, more particularly to a kind of intelligence based on wireless sensor network
It can controlling system of traffic light.
Background technique
Increasing to traffic bring pressure with the growth of the size of population, economy rapid growth causes each city vapour
The growth of vehicle owning amount is considerably beyond China urban traffic road construction speed, to cause urban traffic blocking aggravation, hand over
Interpreter thus rise, environmental pollution aggravate a series of problems, such as.Currently, traditional fixed-time traffic lamp control method can not cope at all
Huge and complicated random case, main cause are as follows in urban transportation:
1, lack sufficient information of vehicle flowrate, the detection of vehicle flowrate is the basis for realizing traffic lights dynamic control, traditional wagon flow
Quantity measuring method mainly include use method have, magnetic induction measurement technology, sonic detection technology, laser infrared line detection method,
Video detection technology and ultrasonic Detection Method, these sensors they all have high-performance, precision high, small in size, easy to operate
The features such as, but the time due to the information of their offers, place, expression-form, sample frequency difference, confidence level are not known
Property it is different, emphasis, purposes are also not quite similar, so the parameter detected only reflects that target is believed from multiple sides in isolation
Breath, in practical application, the variation of advancing car speed, type and environment, weather, so generally existing detection signal is not
Stablize, the big problem of measurement error.
2, traffic lights control uses traditional signal time distributing conception, and traffic-control device control common at present mainly has fixation
The traffic-control device control method of two kinds of control methods of timing and predefined timing, fixed time sequence control was fixed using the period
Time, by the length of delays time to control traffic lights bright light and time of turning off the light, and predefined timing control is according to investigation in advance
Good intersection vehicle flux information selects the control method of different periods difference traffic-control device delay.But special bus flow control
System processed is the very big nonlinear system of a randomness, and any moment is all likely to occur the big lane green time of vehicle flowrate
It is short, and the situation that the small lane green time of vehicle flowrate is long, often due to the traffic lights of the straight trip of traffic lights, left-hand rotation and right-hand rotation when
Long distribution is uneven, leads to vehicle congestion, easily generation traffic accident.
3, it in the prior art, is mainly installed in some key crossings using the method for vehicle flowrate control traffic-control device
Magnetic-field Sensor for Traffic Counting detects vehicular traffic, none scientific, reasonable, effective City Traffic Monitor System.
Summary of the invention
The present invention proposes a kind of new control mode, using wireless sensor network combination vehicle according to above-mentioned drawback
Flow sensor completes the intelligent control of traffic, can between the wireless sensor aggregation node at adjacent right-angled intersection
It is communicated, provides relatively large number of data redundancy information.Wireless sensor network as emerging measurement and control network technology,
It is the intelligent network application system that can independently realize the applications such as the acquisition, fusion and transmission of data.Wireless sensor network makes
Information world in logic is combined closely with true physical world, thus really realize the calculating mode of " ubiquitous ", and
And the system have the advantages that it is small in size, at low cost, be easily installed, can round-the-clock work, convenient for traffic department carry out
It popularizes.
In order to achieve the above objectives, the invention adopts the following technical scheme.
A kind of intelligent traffic light control system based on wireless sensor network, feature include
By East Road mouthful into infrared vehicle flowrate wireless sensor module 2, East Road mouthful into ultrasonic flow wireless sensor module 3, east
Crossing is into laser flow wireless sensor module 4, East Road mouthful go out infrared vehicle flowrate wireless sensor module 5, East Road mouthful goes out ultrasound
Wave current amount wireless sensor module 6, East Road mouthful go out that laser flow wireless sensor module 7, South Road mouthful is wireless into infrared vehicle flowrate
Sensor module 8, South Road mouthful are into ultrasonic flow wireless sensor module 9, South Road mouthful into laser flow wireless sensor module
10, South Road mouthful goes out infrared vehicle flowrate wireless sensor module 11, South Road mouthful goes out ultrasonic flow wireless sensor module 12, South Road
Mouthful go out laser flow wireless sensor module 13, West Road mouthful into infrared vehicle flowrate wireless sensor module 14, West Road mouthful into ultrasound
Wave current amount wireless sensor module 15, South Road mouthful into laser flow wireless sensor module 16, West Road mouthful go out infrared vehicle flowrate without
Line sensor module 17, West Road mouthful go out ultrasonic flow wireless sensor module 18, West Road mouthful goes out laser flow wireless sensor
Module 19, North Road mouthful into infrared vehicle flowrate wireless sensor module 20, North Road mouthful into ultrasonic flow wireless sensor module 21,
North Road mouthful is into laser flow wireless sensor module 22, North Road mouthful go out infrared vehicle flowrate wireless sensor module 23, North Road mouthful goes out
Ultrasonic flow wireless sensor module 24, North Road mouthful go out laser flow wireless sensor module 25 form all directions four into
Outlet vehicle flowrate state-detection.
Further, each crossing entry/exit vehicle Flow Detection sensor is respectively by microwave sensor module, laser sensor
Module and infrared sensor module composition, three different types of vehicle flowrate wireless sensor modules form one group.
Further, the vehicle flowrate wireless sensor module of each entry/exit road direction in all directions is for detecting each disengaging
The vehicle flowrate in lane differentiates driving vehicle existence, the traffic congestion state of all directions, average speed, vehicle, occupation rate peace
Equal time headway parameter.
Further, the vehicle flowrate wireless sensor module of each entry/exit road direction in all directions, is mounted on crossing both sides
Side is located at vehicle and drives on the lighting electric pole 1 in direction, and between two electric poles is 60 meters apart from national standard, installs according to different crossings
Concrete condition determine that the number of vehicle flowrate wireless sensor number needed to install.
Further, laser vehicle flowrate wireless sensor module is installed on first lighting electric pole for drive into crossing, is sailed
Enter installation ultrasonic wave vehicle flowrate wireless sensor module on second lighting electric pole at crossing, in the third root illumination for driving into crossing
Infrared vehicle flowrate wireless sensor module is installed on electric pole, improves the quality of perception using the sensor of multiple and different types,
Obtain more accurate vehicle flowrate identification and more accurate data.
Further, the vehicle flowrate radio detection sensor module on lighting electric pole 1 is mounted on using ZIGBEE wireless mode
Transmission and receive information, each vehicle Flow Detection sensor module (2,3,4,5,6,7,8 ... 25) be exactly a common section
These ordinary nodes of point, installation road both sides form a star-like netted basic network framework, and ordinary node is responsible for collecting vehicle
Data on flows and be transferred to router node (26,27 ... 33) above.
Further, router node (26,27 ... 33) with gateway coordinator 38 form Star Network communicated, most
The data of whole router node all will be aggregated on gateway coordinator 38.
Further, a gateway coordinator 38 is arranged in the crossing of the four corners of the world four and main controller 39, gateway coordinator 38 are negative
The convergence of each router node vehicle flowrate data is blamed, main controller 39 is connect with original traffic light controller 40 and and external network
Communication, gateway coordinator 38 and main controller 39 are mounted in the traffic signalization case of intersection, are exported by main controller 39
Signal controls original traffic light controller 40 to realize the traffic lights conversion time of traffic-control device (34 ... 37), while master control
Device 39 can send traffic control center center by 4G/5G module 41 for the collected data of institute and be for further processing.
Further, this crossing gateway coordinator is in communication with each other with surrounding crossing gateway coordinator, can learn this crossing week in this way
The vehicle flowrate data at the other crossings in side.
Further, vehicle Flow Detection sensor module is by vehicle Flow Detection sensor, microprocessor and wireless transport module
Composition, vehicle Flow Detection sensor module designs become pluggable structure, and can acquire not by using different sensors
Same data.
The beneficial effects of the present invention are:
1, improve the quality of perception using multiple sensors are installed on existing lighting electric pole, obtain more accurate vehicle flowrate identification
With more accurate data, thus traffic lights conversion time can be automatically adjusted according to vehicle vehicle flowrate passage situation, improved logical
Line efficiency, to prevent crossing traffic blocking.
2, one gateway coordinator is set at the crossing of the four corners of the world four and main controller, gateway coordinator is responsible for the remittance of data
Poly-, main controller is responsible for controlling gateway coordinator and external network communication and traffic lights control, gateway coordinator and main controller installation
In the traffic signalization case of intersection, it is red green to realize that original traffic light controller is controlled by main controller output signal
Lamp conversion time, while main controller can send traffic control center center by 4G/5G module for the collected data of institute and make
Further analysis processing.
3, gateway coordinator can be in communication with each other with the gateway coordinator at crossing around, can be learnt by gateway coordinator in this way
The vehicle flowrate data at this other crossing in crossing periphery improve vehicle pass-through efficiency preferably to control traffic lights conversion time.
Detailed description of the invention
Fig. 1: the intelligent traffic light control system block diagram based on wireless sensor network；
Fig. 2: router node and gateway coordinator link schematic diagram with main controller；
Fig. 3: vehicle flowrate wireless sensor module block diagram.
Specific embodiment
Invention is further illustrated in the following with reference to the drawings and specific embodiments.
As shown in Fig. 1, a kind of intelligent traffic light control system based on wireless sensor network, including East Road mouthful is into vehicle
Flow wireless sensor module group 26, East Road mouthful go out vehicle flowrate wireless sensor module group 27, and South Road mouthful is wirelessly passed into vehicle flowrate
Sensor module group 28, South Road mouthful go out vehicle flowrate wireless sensor module group 29, and West Road mouthful is into vehicle flowrate wireless sensor module group
30, West Road mouthful goes out vehicle flowrate wireless sensor module group 31, and North Road mouthful goes out into vehicle flowrate wireless sensor module group 32, North Road mouthful
Vehicle flowrate wireless sensor group 33.
Each vehicle flowrate wireless sensor group include three different types of magnetic-field Sensor for Traffic Counting modules (2,3,4,5,6,
7,8 ... 25), laser magnetic-field Sensor for Traffic Counting is installed on first lighting electric pole for drive into road junction, driving into the second of road junction
Ultrasonic wave magnetic-field Sensor for Traffic Counting is installed on root lighting electric pole, infrared vehicle flowrate is installed on the third root lighting electric pole for driving into road junction
Sensor, each lighting electric pole are met 60 meters.The traditional signal of current traffic flow acquisition often by single sensor Lai
It completes, this method can only reflect target information in isolation, and in practical application, advancing vehicle is by speed, type environment
And the influence of the factors such as variation of weather, so generally existing detection jitter, the big problem of measurement error.Using ultrasound
The detection of wave magnetic-field Sensor for Traffic Counting, advantage to rain, mist, the penetration power of snow is strong, decaying is small, therefore can be severe in rain, snow, dense fog etc.
Working under weather, there are also its principle is simple, easy to make, at low cost.It is detected using laser magnetic-field Sensor for Traffic Counting, advantage is tool
There is detectability quick and precisely, clear-cut, the disadvantage is that the dust of working site, ice fog will affect the normal work of system
Make.It is detected using infrared car flow sensor, advantage is that detecting distance is remote, energy in the case where no-reflection plate and low reflectivity
Measure larger distance;Measurement range is wide, the response time is short, strong antijamming capability, it is small in size, light-weight the advantages that, disadvantage
It is to be easy light interference.The present invention is comprehensively utilized the measuring signal of the sensor of multiple and different types, to greatest extent
Useful information is extracted, improves the quality of perception using multiple sensors, to provide more accurately identification and more accurate number
According to.
It can be seen in FIG. 1 that the vehicle Flow Detection sensor module being mounted on lighting electric pole is passed using wireless mode
Defeated and reception message, each vehicle Flow Detection sensor module is exactly an ordinary node, vehicle Flow Detection sensor module
(2,3,4,5,6,7,8 ... 25) only responsible collecting vehicle data on flows and be transferred to router node (26,27,28,29,30,
31,32,33) on, vehicle Flow Detection sensor module (2,3,4,5,6,7,8 ... 25) with the router node that each closes on
(26,27,28,29,30,31,32,33) composition Star Network is communicated, and the data of the vehicle flowrate data in each lane are converged
Gather on gateway coordinator 38, vehicle flowrate data are passed to main controller 39 by gateway coordinator 38, and main controller 39 counts all directions
Vehicle flowrate, according to size combination artificial intelligence (AI) command system of vehicle flowrate control software exchange rule, output signal to
Original traffic light controller 40 determines the lasting lighting time and break time of each traffic lights (34 ... 37).
In Fig. 1 it can be seen that the crossing of the four corners of the world four is provided with a gateway coordinator 38 and main controller 39, gateway association
Device 38 is adjusted to be responsible for the convergence of data, main controller 39 is communicated with external network and original traffic light controller 40, gateway coordinator 38
It is mounted in original traffic signalization case of intersection, is outputed signal to by main controller 39 original red green with main controller 39
Lamp controller 40 controls the traffic lights conversion time of traffic-control device, while main controller 39 can pass through the collected data of institute
4G/5G module 41 is sent to Cloud Server by cloud communication protocol, and the central server of traffic control center with cloud by taking
Business device communicates to obtain the information of vehicle flowrate at each crossing, so as to for further processing.
Gateway coordinator 38 can be in communication with each other with the gateway coordinator at crossing around, can be learnt by gateway coordinator in this way
The vehicle flowrate data at this other crossing in crossing periphery improve vehicle pass-through efficiency preferably to control traffic lights conversion time.
Fig. 2 is router node and gateway coordinator and main controller links schematic diagram, and East Road mouthful is into router node 26, east
Crossing goes out router node 27, South Road mouthful and goes out router node 29, West Road mouthful into router section into router node 28, South Road mouthful
Point 30, West Road mouthful go out router node 31, North Road mouthful and go out router node 33 and gateway coordinator into router section 32, North Road mouthful
The 38 star-like wireless networks of composition carry out wireless communication link, and a gateway coordinator 38, gateway is arranged in the crossing of the four corners of the world four
Coordinator 38 is responsible for converging the vehicle flowrate data at the crossing of the four corners of the world four, is then sent to data by CAN bus
Main controller 39 can also carry out communication transmitting data by 1000M-PHY chip and main controller 39.Main controller 39 selects NXP
Cortex-A9 i.MX6Q microprocessor is as kernel control chip.Gateway coordinator 38 and main controller 39 are mounted on crossroad
It in original traffic signal lights control cabinet of mouth, thus can use original traffic signal lights, reduce equipment investment
Expense and raising project progress efficiency.
There is UART serial data bus interface on main controller 39, UART is a kind of Universal Serial Bus, for asynchronous
Full duplex transmission and reception may be implemented in communication, the bus two-way communication；There are also RS485 communication interfaces, are connect by different communication
Mouth is matched with former traffic light controller, and output signal controls the traffic lights conversion time of traffic-control device.
There are also USB HOST interface module on main controller 39, wherein USB2 HOST interface module and 42 chain of 4G/5G module
It connects, this Traffic Flow at Intersection situation is sent to Cloud Server, traffic control by cloud communication protocol by 4G/5G module 42
The central server at center receives the vehicle flowrate data at each crossing by connection Cloud Server to be further analysed processing.
Fig. 3 is vehicle flowrate wireless sensor module block diagram, and vehicle flowrate wireless sensor module is used to acquire by sensor
Intersection vehicle flux data, the module are made into plug type, and different numbers can be thus acquired by using different sensors
According to, while vehicle flowrate wireless sensor module being designed to the consistent ordinary node of ZIGBEE cordless communication network.
It can be seen in the drawing that vehicle flowrate wireless sensor module is by magnetic-field Sensor for Traffic Counting, control module, ZigBee module
And power supply composition, the major function of control module are to control the co-ordination of each unit, including send accordingly to ZigBee module
Instruction realize wireless communication, the major function of ZigBee module is to complete wireless communication function, the life that receiving router is sent
Enable frame and the data of transmission magnetic-field Sensor for Traffic Counting acquisition to router, power module is whole circuit board power supply.
Certainly, the present invention can also have other embodiments, without deviating from the spirit and substance of the present invention, affiliated skill
The technical staff in art field makes various corresponding changes and modifications, but these corresponding changes and modifications in accordance with the present invention
It all should belong to scope of protection of the claims of the invention.
Claims (7)
1. a kind of intelligent traffic light control system based on wireless sensor network, it is characterised in that: by East Road mouthful into infrared vehicle
Flow wireless sensor module 2, East Road mouthful are wirelessly passed into ultrasonic flow wireless sensor module 3, East Road mouthful into laser flow
Sensor module 4, East Road mouthful go out infrared vehicle flowrate wireless sensor module 5, East Road mouthful goes out ultrasonic flow wireless sensor module
6, East Road mouthful go out laser flow wireless sensor module 7, South Road mouthful into infrared vehicle flowrate wireless sensor module 8, South Road mouthful into
Ultrasonic flow wireless sensor module 9, South Road mouthful go out infrared vehicle flowrate into laser flow wireless sensor module 10, South Road mouthful
Wireless sensor module 11, South Road mouthful go out ultrasonic flow wireless sensor module 12, South Road mouthful goes out laser flow wireless sensing
Device module 13, West Road mouthful are into infrared vehicle flowrate wireless sensor module 14, West Road mouthful into ultrasonic flow wireless sensor module
15, South Road mouthful goes out infrared vehicle flowrate wireless sensor module 17, West Road mouthful into laser flow wireless sensor module 16, West Road mouthful
Ultrasonic flow wireless sensor module 18, West Road mouthful go out laser flow wireless sensor module 19, North Road mouthful into infrared vehicle out
Flow wireless sensor module 20, North Road mouthful into ultrasonic flow wireless sensor module 21, North Road mouthful is wireless into laser flow
Sensor module 22, North Road mouthful go out infrared vehicle flowrate wireless sensor module 23, North Road mouthful goes out ultrasonic flow wireless sensor
Module 24, North Road mouthful go out laser flow wireless sensor module 25 and form the disengaging intersection vehicle flux state inspection of all directions four
It surveys.
2. a kind of intelligent traffic light control system based on wireless sensor network according to claim 1, feature exist
In: each crossing entry/exit vehicle Flow Detection sensor is respectively by microwave sensor module, laser sensor module and infrared biography
Sensor module composition, three different types of vehicle flowrate wireless sensor modules form one group；The each entry/exit road in all directions
The vehicle flowrate wireless sensor module in direction is used to detect the vehicle flowrate in each disengaging lane, differentiates that the driving vehicle of all directions is deposited
In state, traffic congestion state, average speed, vehicle, occupation rate and average headway parameter.
3. a kind of intelligent traffic light control system based on wireless sensor network according to claim 1, feature exist
In: the vehicle flowrate wireless sensor module of each entry/exit road direction in all directions is mounted on beside crossing two and is located at vehicle
It drives on the lighting electric pole 1 in direction, between two electric poles is 60 meters apart from national standard, installs the concrete condition according to different crossings
The number for needing to install vehicle flowrate wireless sensor number determined.
4. a kind of intelligent traffic light control system based on wireless sensor network according to claim 1, feature exist
In: laser vehicle flowrate wireless sensor module is installed on first lighting electric pole for drive into crossing, is driving into the second of crossing
Ultrasonic wave vehicle flowrate wireless sensor module is installed on root lighting electric pole, is installed on the third root lighting electric pole for driving into crossing red
Outer vehicle flowrate wireless sensor module, improves the quality of perception using the sensor of multiple and different types, obtains more accurately
Vehicle flowrate identification and more accurate data.
5. a kind of intelligent traffic light control system based on wireless sensor network according to claim 1, feature exist
In: the vehicle flowrate radio detection sensor module being mounted on lighting electric pole 1 is using ZIGBEE wireless way for transmitting and receives letter
Breath, each vehicle Flow Detection sensor module is exactly an ordinary node, these ordinary nodes composition of installation road both sides
One star-like netted basic network framework, ordinary node are responsible for acquiring data and be transferred to above router node, router section
Point is communicated with gateway coordinator composition Star Network, and final data will be aggregated on gateway coordinator.
6. a kind of intelligent traffic light control system based on wireless sensor network according to claim 1, feature exist
In: a gateway coordinator 18 is arranged for the crossing of the four corners of the world four and main controller 23, gateway coordinator 18 are responsible for each router
The convergence of node vehicle flowrate data, main controller 23 connect with original traffic light controller 40 and assist with external network communication, gateway
It adjusts device 18 and main controller 23 to be mounted in the traffic signalization case of intersection, is controlled by 23 output signal of main controller original
Traffic light controller 40 realizes the traffic lights conversion time of traffic-control device, while main controller 23 can be by the collected data of institute
Traffic control center center is sent to by 4G/5G module 24 to be for further processing.
7. a kind of intelligent traffic light control system based on wireless sensor network according to claim 1, feature exist
In: vehicle Flow Detection sensor module is made of vehicle Flow Detection sensor, microprocessor and wireless transport module, vehicle flowrate inspection
Surveying sensor module designs becomes pluggable structure, and different data can be acquired by using different sensors.
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| CN201711161519.8A CN109816996A (en) | 2017-11-21 | 2017-11-21 | Intelligent traffic light control system based on wireless sensor network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110148302A (en) * | 2019-05-29 | 2019-08-20 | 江苏理工学院 | Intelligent traffic light command system based on infrared induction Yu narrowband technology of Internet of things |
| CN110634297A (en) * | 2019-10-08 | 2019-12-31 | 交通运输部公路科学研究所 | Signal lamp state identification and passing control system based on vehicle-mounted laser radar |
| CN111223308A (en) * | 2019-12-03 | 2020-06-02 | 扬州后潮科技有限公司 | Traffic dynamic adjustment system based on WSN |
| CN115100852A (en) * | 2022-06-09 | 2022-09-23 | 智能汽车创新发展平台(上海)有限公司 | High-availability roadside fusion sensing system and method for serving intelligent networked automobile |
-
2017
- 2017-11-21 CN CN201711161519.8A patent/CN109816996A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110148302A (en) * | 2019-05-29 | 2019-08-20 | 江苏理工学院 | Intelligent traffic light command system based on infrared induction Yu narrowband technology of Internet of things |
| CN110634297A (en) * | 2019-10-08 | 2019-12-31 | 交通运输部公路科学研究所 | Signal lamp state identification and passing control system based on vehicle-mounted laser radar |
| CN110634297B (en) * | 2019-10-08 | 2020-08-07 | 交通运输部公路科学研究所 | Signal lamp state identification and passing control system based on vehicle-mounted laser radar |
| CN111223308A (en) * | 2019-12-03 | 2020-06-02 | 扬州后潮科技有限公司 | Traffic dynamic adjustment system based on WSN |
| CN115100852A (en) * | 2022-06-09 | 2022-09-23 | 智能汽车创新发展平台(上海)有限公司 | High-availability roadside fusion sensing system and method for serving intelligent networked automobile |
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Application publication date: 20190528 |