CN104036644B - A kind of Intelligent Control System for Traffic Lights and implementation method - Google Patents
A kind of Intelligent Control System for Traffic Lights and implementation method Download PDFInfo
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- CN104036644B CN104036644B CN201410225402.1A CN201410225402A CN104036644B CN 104036644 B CN104036644 B CN 104036644B CN 201410225402 A CN201410225402 A CN 201410225402A CN 104036644 B CN104036644 B CN 104036644B
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Abstract
The invention discloses a kind of Intelligent Control System for Traffic Lights and implementation method, the field control system that described system is identical with being arranged at each intersection structure by central processing unit is formed; Each field control system comprises image acquisition device, image processor, Node Controller, traffic lights display module, communication module.The implementation method of this control system is: according to people, vehicle flowrate situation of change, one day is decomposed into rush-hour, non-peak period, low ebb phase, on the basis of the traffic lights Collaborative Control to multiple crossing, if the weighted traffic in certain track continuous j time maximum, then automatically adjust traffic lights durations.The present invention effectively can improve traffic efficiency and the traffic intelligence level of urban road, has practical application and promotional value.
Description
Technical field
The present invention relates to a kind of Intelligent Control System for Traffic Lights and implementation method.Belong to technical field of intelligent traffic.
Background technology
Along with the development of economic society, city automobile recoverable amount gets more and more.How to improve automobile traffic efficiency, what reduce traffic congestion phenomenon as much as possible is a major issue being badly in need of solving.At present, usually timing controlled is adopted the working time of urban road each crossing all directions traffic lights.Timing controlled does not consider the real-time change situation of this crossing traffic flow, and on the track that may occur green light within some time period, vehicle flowrate is very little, and on the track of red light, vehicle flowrate is very large.Adopt timing controlled can cause vehicles or pedestrians " sky etc. " phenomenon, reduce the traffic efficiency of road.Part big and medium-sized cities adopt the different signal periods at Different periods to traffic lights, although this can improve the traffic efficiency of road to a certain extent, effect is not still clearly.Therefore, how realize intelligence, the Collaborative Control of traffic lights according to the vehicle flowrate size at each crossing, the traffic efficiency improving road is a very valuable problem.
Number of patent application is 201210136154.4, name is called the patent of invention of " real-time traffic indicator lamp control system ", its " side comparatively serious to traffic jam environment gives right-of-way, and obtains the disposal route of reasonable transit time, thus alleviates traffic jam environment ".This patent is not considered in peak period, non-peak period, low ebb phase adopt different control strategies.Number of patent application is 201010152473.5, name is called the patent of invention of " traffic signal intelligent control system and method based on image procossing ", it " according to the road conditions of imageing sensor shooting, analyzes vehicle flowrate size, the Automatic Optimal adjustment traffic lights lamp bright time ".The bright light cycle, according to vehicle flowrate size, is divided into short period, middle cycle, long period by this invention, but the switching due to traffic lights places one's entire reliance upon people, vehicle flowrate, and this can cause the switching of traffic lights too frequent, make pedestrian and driver at a loss as to what to do.Number of patent application is 201110291570.7, name is called the patent of invention of " Intelligent traffic light control method and system based on radio sensing network ", it " is installed wireless sensor network system at the parting of the ways; calculated the time span of traffic lights adaptively by software algorithm, and automatically adjusts the duration of traffic lights ".It is pointed out that above patent does not all consider the Collaborative Control of adjacent multiple crossroads traffic lights.License number is CN202142193U, the utility model patent that name is called " road traffic lights intelligent control system ", and it " provides a kind of road traffic lights intelligent control system automatically controlling traffic lights display and count down time according to information of vehicle flowrate ".This utility model does not consider the situation of change of the flows such as pedestrian, battery truck, bicycle, and in peak period, non-peak period, low ebb phase adopt identical control strategy, be thus not easy to realize the Based Intelligent Control to traffic lights.
In prior art, temporarily also not according to people, vehicle flowrate situation of change determination rush-hour, non-peak period, low ebb phase, and on the basis of the traffic lights Collaborative Control to multiple crossing, realize the system and method to traffic lights intelligence, non-frequent adjustment.
Summary of the invention
The object of the present invention is to provide a kind of Intelligent Control System for Traffic Lights and implementation method.On the basis of the traffic lights Collaborative Control to multiple crossing, according to people, vehicle flowrate situation of change, one day is decomposed into rush-hour, non-peak period, low ebb phase, if the weighted traffic in certain track continuous j time maximum, then automatically adjust traffic lights durations.The object of the invention is to design a kind of Intelligent Control System for Traffic Lights and implementation method, to reduce " empty etc. " of vehicles or pedestrians and correspondingly to improve the traffic efficiency of road.
The present invention for achieving the above object, adopts following technical scheme:
A kind of Intelligent Control System for Traffic Lights, the field control system that system is identical with being arranged at each intersection structure by central processing unit is formed; Each field control system comprises image acquisition device, image processor, Node Controller, traffic lights display module, communication module; People, vehicle flowrate data that several image acquisition devices gather each track in respective direction are installed above the track in each direction of intersection; The data that image processor process image acquisition device gathers, calculate weighted traffic corresponding data are transferred to Node Controller; Node Controller sends a control signal to traffic lights display module according to the implementation method of setting, realizes the intelligentized control method to traffic lights; Node Controller is simultaneously by communication module and central processing unit two-way communication.
A kind of implementation method of Intelligent Control System for Traffic Lights comprises the following steps:
1) according to the principle blocked by nothing, determine that on road, each traffic lights becomes the moment of green light;
2) counter i is introduced also to i assignment initial value 0; According to the difference of time period every day, determine to adopt any cycle in long period, middle cycle or short period;
3) for certain crossing, image acquisition device to gather once people on corresponding track, vehicle flowrate data second every s, wherein s is arithmetic number, and image processor calculates the weighted traffic of each direction of traffic, and draw weighted traffic maxima and minima, the track that namely vehicle flowrate is maximum with minimum;
4) when twice, front and back weighted traffic maximum be all the track of same direction of traffic, the value of i adds 1; If i=j, wherein j is the positive integer that presets and represents that i's allows the upper bound, then traffic lights display module reception control signal, the track green time making vehicle flowrate maximum increases p second, wherein p is arithmetic number, and accordingly, the green time in the track that weighted traffic is minimum reduces p second, proceed to the 2nd step, carry out next round circulation; Work as i<j, proceed to the 3rd step; When twice, front and back weighted traffic maximum be not the track of same direction of traffic, proceed to the 2nd step, carry out next round circulation.
According to distance major trunk roads set between the speed of a motor vehicle and adjacent two crossings, the moment that second traffic lights becomes green light is the moment that first traffic lights becomes green light add that vehicle runs the required time between these two crossings; For the crossing that non-major trunk roads and major trunk roads intersect, when major trunk roads become green light, then corresponding non-major trunk roads become red light, simultaneously, with this intersection for starting point, according to the time adjustment arranging non-major trunk roads traffic lights gradually away from the order of this intersection and above-mentioned rule.
According to people, vehicle flowrate situation of change, rush-hour, non-peak period, low ebb phase will be decomposed into every day, corresponding green time length is respectively long period c1 second, middle cycle c2 second, short period c3 second, and wherein c1, c2, c3 are arithmetic number and c1>c2>c3.
When red light lights, image acquisition device to gather once people on corresponding track, vehicle flowrate data second every s, corresponding data is sent to image processor process, and calculate weighted traffic, and weighted traffic is m% × (pedestrian, battery truck, bicycle total flow)+n% × motor vehicle flow, wherein m>0, n>0, and m+n=100.
In case of emergency, if road surface runs into priority pass vehicle, such as ambulance, fire truck etc., described central processing unit can control each administered Node Controller under labor management, thus change the display state of traffic lights, realize priority pass vehicle and block by nothing.
The present invention is on the basis being background with a kind of Intelligent Control System for Traffic Lights and implementation method, by rationally arranging image acquisition device, image processor, Node Controller, traffic lights display module, communication module, central processing unit etc., and provide rational traffic grade implementation method, reach the object to traffic lights Based Intelligent Control.Signal wiring relation of the present invention is simple, and implementation method is simple and easy to do, can reduce " empty etc. " of vehicles or pedestrians and correspondingly improve the traffic efficiency of road, having practical application and promotional value.
Accompanying drawing explanation
Fig. 1 is Intelligent Control System for Traffic Lights signal wiring relation schematic diagram of the present invention.
Fig. 2 is implementation method process flow diagram of the present invention.
Embodiment
A kind of Intelligent Control System for Traffic Lights of the present invention is made up of image acquisition device, image processor, Node Controller, traffic lights display module, communication module, central processing unit etc.The present invention discloses a kind of implementation method of Intelligent Control System for Traffic Lights, to realize the optimal utilization to road.Below in conjunction with Figure of description, the specific embodiment of the present invention is described in further detail.
The present invention connects each hardware unit in Intelligent Control System for Traffic Lights according to the connected mode in accompanying drawing 1.For ease of gathering the dynamic image in different track, each crossing, every a (a>0) meter ampere, an image acquisition device is filled to the track of same direction of traffic, and b (b>0) individual image acquisition device is installed in the track of same direction of traffic altogether, so that photograph walkway, car lane wait pedestrian, vehicles number, simultaneously, at night in order to photograph magnitude of traffic flow multidate information more clearly, flashlamp can be installed, trigger its work when image acquisition device works.As shown in Figure 2, because A1, A2 track direction of traffic is identical, only need installation one group of image acquisition device, and A3 track needs installation one group of image acquisition device.
Below in conjunction with attached Fig. 1 and 2, the control method of certain road junction intelligent traffic lamp control system is described.
Consideration major trunk roads set on the basis of the distance between the speed of a motor vehicle and adjacent two crossings, and the moment that second traffic lights becomes green light should be the moment that first traffic lights become green light and adds that vehicle runs the required time between these two crossings.For the crossing that non-major trunk roads and major trunk roads intersect, when major trunk roads become green light, then corresponding non-major trunk roads become red light, simultaneously, with this intersection for starting point, the switching instant of non-major trunk roads traffic lights is set according to above-mentioned rule according to the order gradually away from this intersection simultaneously, thus realizes as much as possible major trunk roads, non-major trunk roads are blocking by nothing.
According to people, vehicle flowrate situation of change also without loss of generality, can be decomposed into rush-hour (), non-peak period (removing peak period and outside the low ebb phase At All Other Times), low ebb phase () every day at 7 o'clock to 9 o'clock, 17 o'clock to 19 o'clock at 22 o'clock to 7 o'clock, corresponding green time length is respectively long period (c1 second), middle cycle (c2 second), short period (c3 second), and wherein c1, c2, c3 are all greater than zero and c1>c2>c3.It should be noted that, for different cities, rush-hour, non-peak period, the time period of low ebb phase possibility difference, each city can be determined according to local traffic.
Suppose that the vehicle in right turn track can directly pass through under the prerequisite of vehicle pass-through not affecting green light track and Through Lane.When the track red light in certain direction lights, image acquisition device every s to gather once second corresponding track is waited people, vehicle flowrate data, corresponding data is sent to image processor and processes.As shown in Figure 2, first image processor calculates Through Lane A0+A1+A2, the weighted traffic of A4+A5+A7, B0+B1+B2, B4+B5+B7, and weighted traffic is m% × (total flow such as pedestrian, battery truck, bicycle)+n% × motor vehicle flow, wherein m>0, n>0, and m+n=100, then above four weighted traffic are compared, obtain the maximal value of Through Lane weighted traffic, minimum value.Similar, calculate left turn lane A0+A3, the weighted traffic of A6+A7, B0+B3, B6+B7, and maximal value, the minimum value of obtaining left turn lane weighted traffic.Then, the size of the maximal value of Through Lane weighted traffic and the maximal value of left turn lane weighted traffic is compared; The relatively size of the minimum value of Through Lane weighted traffic and the minimum value of left turn lane weighted traffic.As follows to the implementation method of traffic lights control procedure:
1) counter i is introduced also to i assignment initial value 0.According to the difference of time period every day, determine to adopt any cycle in long period, middle cycle or short period.
2) for certain crossing, image acquisition device to gather once people on corresponding track, vehicle flowrate data second every s, image processor calculates the weighted traffic of each direction of traffic, and draws weighted traffic maxima and minima, the track that namely vehicle flowrate is maximum with minimum.
3) if twice, front and back weighted traffic maximum be all the track of same direction of traffic, the value of i adds 1.If i=j, then traffic lights display module reception control signal, the track green time making vehicle flowrate maximum increases p second, and accordingly, the green time in the track that weighted traffic is minimum reduces p second, proceeds to the 1st step, carries out next round circulation; If i<j, proceed to the 2nd step.If the track of what twice, front and back weighted traffic was maximum is not same direction of traffic, proceeds to the 1st step, carries out next round circulation.Control procedure flow process is shown in accompanying drawing 2.
It should be noted that, if at every turn all adjust traffic light time when the weighted traffic of Through Lane or left turn lane is maximum, the time span of traffic lights then can be caused frequently to adjust, cause people, the size that next traffic light time length do not known by car, easily bring out the generation of " robbing second " phenomenon, and then cause safety problem.And the present invention the weighted traffic of Through Lane or left turn lane is continuous be maximum j time time just adjust the time span of traffic lights, effectively prevent the generation of above situation.
If the vehicle in right turn track is also by the control of traffic lights, then need, on right-turn lane, image acquisition device and image processor are installed, according to the weighted traffic of similar approach calculating above, and the maximal value of the weighted traffic of craspedodrome, left-hand rotation, right-turn lane, minimum value are compared simultaneously.On the other hand, if to turn left, Through Lane controls by same traffic lights, should by the weighted traffic joint account of left-hand rotation, Through Lane.
If road surface runs into priority pass vehicle, such as ambulance, fire truck etc., described central processing unit can control each administered Node Controller under labor management, realizes priority pass vehicle and blocks by nothing.When priority pass vehicle is by behind certain crossing, the display of its traffic lights recovers normal condition.
In the present invention, the advantage of a kind of Intelligent Control System for Traffic Lights and implementation method comprises: the Collaborative Control considering multiple crossroads traffic light, realizes as much as possible blocking by nothing; Different control strategies is taked in rush-hour, non-peak period, low ebb phase; Consider the situation of change of people, vehicle flowrate simultaneously; According to the display state of the situation of change adjustment traffic lights of each crossing people, vehicle flowrate, improve the traffic efficiency of road, meanwhile, the switching of traffic lights has again certain regularity, avoids the generation of people, car situation at a loss as to what to do.Signal wiring relation of the present invention and implementation method simply, are convenient to realize the Based Intelligent Control to traffic lights, are had practical application and promotional value.
Claims (4)
1. an implementation method for Intelligent Control System for Traffic Lights, the field control system that the system that the method uses is identical with being arranged at each intersection structure by central processing unit is formed; Each field control system comprises image acquisition device, image processor, Node Controller, traffic lights display module, communication module; People, vehicle flowrate data that several image acquisition devices gather each track in respective direction are installed above the track in each direction of intersection; The data that image processor process image acquisition device gathers, calculate weighted traffic corresponding data are transferred to Node Controller; Node Controller sends a control signal to traffic lights display module according to the implementation method of setting, realizes the intelligentized control method to traffic lights; Node Controller is simultaneously by communication module and central processing unit two-way communication; It is characterized in that, described implementation method comprises the following steps:
1) according to the principle blocked by nothing, determine that on road, each traffic lights becomes the moment of green light;
2) counter i is introduced also to i assignment initial value 0; According to the difference of time period every day, determine to adopt any cycle in long period, middle cycle or short period;
3) for certain crossing, image acquisition device to gather once people on corresponding track, vehicle flowrate data second every s, wherein s is arithmetic number, and image processor calculates the weighted traffic of each direction of traffic, and draw weighted traffic maxima and minima, the track that namely vehicle flowrate is maximum with minimum;
4) when twice, front and back weighted traffic maximum be all the track of same direction of traffic, the value of i adds 1; If i=j, wherein j is the positive integer that presets and represents that i's allows the upper bound, then traffic lights display module reception control signal, the track green time making vehicle flowrate maximum increases p second, wherein p is arithmetic number, and accordingly, the green time in the track that weighted traffic is minimum reduces p second, proceed to the 2nd step, carry out next round circulation; Work as i<j, proceed to the 3rd step; When twice, front and back weighted traffic maximum be not the track of same direction of traffic, proceed to the 2nd step, carry out next round circulation.
2. based on the implementation method of a kind of Intelligent Control System for Traffic Lights according to claim 1, it is characterized in that, according to distance major trunk roads set between the speed of a motor vehicle and adjacent two crossings, the moment that second traffic lights becomes green light is the moment that first traffic lights becomes green light add that vehicle runs the required time between these two crossings; For the crossing that non-major trunk roads and major trunk roads intersect, when major trunk roads become green light, then corresponding non-major trunk roads become red light, simultaneously, with this intersection for starting point, according to the time adjustment arranging non-major trunk roads traffic lights gradually away from the order of this intersection and above-mentioned rule.
3. based on the implementation method of a kind of Intelligent Control System for Traffic Lights according to claim 1, it is characterized in that, according to people, vehicle flowrate situation of change, rush-hour, non-peak period, low ebb phase will be decomposed into every day, corresponding green time length is respectively long period c1 second, middle cycle c2 second, short period c3 second, and wherein c1, c2, c3 are arithmetic number and c1>c2>c3.
4. based on the implementation method of a kind of Intelligent Control System for Traffic Lights according to claim 1, it is characterized in that, when red light lights, image acquisition device to gather once people on corresponding track, vehicle flowrate data second every s, corresponding data is sent to image processor process, and calculate weighted traffic, and weighted traffic is m% × (pedestrian, battery truck, bicycle total flow)+n% × motor vehicle flow, wherein m>0, n>0, and m+n=100.
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| CN106652494A (en) * | 2015-11-03 | 2017-05-10 | 中国移动通信集团公司 | Traffic light control method and device |
| CN105957370A (en) * | 2016-06-20 | 2016-09-21 | 三峡大学 | QoE-based traffic scheduling big data system and method |
| CN107784842A (en) * | 2016-08-29 | 2018-03-09 | 惠州市路宝电子有限公司 | A kind of traffic flow control system and its control method |
| CN108428348B (en) * | 2017-02-15 | 2022-03-18 | 阿里巴巴集团控股有限公司 | Road traffic optimization method and device and electronic equipment |
| CN108492589A (en) * | 2018-03-05 | 2018-09-04 | 俞跃 | Traffic lights intelligent adjusting method and device |
| CN109003461A (en) * | 2018-08-08 | 2018-12-14 | 苏州市航银机电有限公司 | A kind of efficiently current traffic lights network system |
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| CN109300318A (en) * | 2018-10-25 | 2019-02-01 | 朱浩萱 | Traffic lamp control method |
| CN111354184B (en) * | 2018-12-24 | 2022-04-15 | 北京嘀嘀无限科技发展有限公司 | Traffic signal period calculation method and apparatus, and computer-readable storage medium |
| CN109637163A (en) * | 2018-12-26 | 2019-04-16 | 江苏理工学院 | A kind of dynamic dispatching traffic control system and its management method |
| CN111783503A (en) * | 2019-04-21 | 2020-10-16 | 泰州悦诚科技信息咨询中心 | Electronic equipment state switching method |
| CN110136454B (en) * | 2019-06-17 | 2021-06-29 | 公安部交通管理科学研究所 | Urban traffic trunk line dynamic green wave signal control system and method based on real-time traffic flow data |
| CN110264726B (en) * | 2019-08-06 | 2022-04-08 | 中国联合网络通信集团有限公司 | Traffic control method and traffic control system |
| CN112037544A (en) * | 2019-12-21 | 2020-12-04 | 李绪臣 | System for dynamically customizing right of road relative to lane |
| CN111862646A (en) * | 2020-06-28 | 2020-10-30 | 河南省神盛科技商贸有限公司 | Traffic signal lamp and control system thereof |
| CN113160583B (en) * | 2021-04-20 | 2022-07-08 | 山东九昌重工科技有限公司 | Intelligent traffic command method and system for intersection |
| CN114973661B (en) * | 2022-05-16 | 2024-05-10 | 深圳市中建恒峰电子有限公司 | Traffic signal lamp with intelligent control and traffic flow data storage |
| CN116704788A (en) * | 2023-05-25 | 2023-09-05 | 深圳市新创中天信息科技发展有限公司 | Vehicle-road cooperation method and system based on edge calculation |
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