CN104916066A - Traffic intersection signal lamp adaptive control system - Google Patents
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- CN104916066A CN104916066A CN201510257029.2A CN201510257029A CN104916066A CN 104916066 A CN104916066 A CN 104916066A CN 201510257029 A CN201510257029 A CN 201510257029A CN 104916066 A CN104916066 A CN 104916066A
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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
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4183—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by data acquisition, e.g. workpiece identification
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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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
- G08G1/081—Plural intersections under common control
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Abstract
The invention relates to a traffic intersection signal lamp adaptive control system. The control system comprises a plurality of cameras, a plurality of signal lamp controllers and a remote monitoring platform, wherein the cameras and the signal lamp controllers are in one-to-one correspondence, each camera is correspondingly connected to one signal lamp controller and used for shooting an intersection where signal lamps controlled by the corresponding signal lamp controller are located so as to acquire intersection images, the signal lamp controllers carry out compression coding and UDP (user datagram protocol) packaging on the intersection images so as to output intersection image network data, and the remote monitoring platform is connected to the plurality of signal lamp controllers through a 4G network so as to acquire network data of a plurality of intersection images and carries out adaptive control on a plurality of signal lamps controlled by the plurality of signal lamp controllers based on the network data of the plurality of intersection images. Through the traffic intersection signal lamp adaptive control system, the traffic light duration time of the signal lamps of the plurality of intersections can be determined adaptively according to specific passage conditions of a plurality of intersections of the same road section, thereby realizing reasonable scheduling of the traffic flow.
Description
The divisional application that the present invention is application number is 2014104191205, the applying date is on August 24th, 2014, denomination of invention is the patent of " traffic intersection signal lamp adaptive control system ".
Technical field
The present invention relates to road traffic scheduling field, particularly relate to a kind of traffic intersection signal lamp adaptive control system.
Background technology
Current, every country, especially developing country, urbanization process is constantly being pushed into, and city size is constantly extended.Due to the advantage of urban district medical treatment, working opportunity and amusement aspect, increasing people select work in city or live, and what bring is the progressively raising of urban district automobile quantity thereupon.Automobile, bringing easily simultaneously, also have impact on the unimpeded of urban transportation.Even in some section, due to the supersaturation of automobile, cause traffic highly to be blocked up, the time that spends of driving even has exceeded time of people's walking, the severe jamming normal life of people.Traffic congestion has become a kind of urban disease, annoyings city dweller and city manager.
In order to alleviate the degree of urban traffic blocking, the hard brains of city manager, propose and implement some ways improving traffic trip, such as, carry out widening road by road construction, increase and more dredge section, or by economic means, improve the expenses standard of city parking lot.These ways alleviate the degree of traffic congestion to a certain extent, but the manpower and financial resources of the former at substantial, the width increased and road are unable to catch up with the increase of automobile quantity, and the latter is the means with administrative interference, cause certain financial burden to the resident of urban district trip.Therefore, above-mentioned way all has certain drawback.
In order to from city planning, improve the rationality of the dredging magnitude of traffic flow, the technical scheme of some belisha beacon traffic lights duration Based Intelligent Control is there is in prior art, according to the difference of the magnitude of traffic flow in morning and evening, be that same signal lamp designs the different traffic lights duration in different time sections, reduce the vehicle fleet size waiting for red light, ensure the utilization rate of road.But the signal lamp traffic lights duration was fixed based on the time period in prior art, can not in real time according to the flow at crossing, signal lamp place and adaptive change, thus technical scheme is more inflexible, intelligent level is lower.
Therefore, need a kind of new traffic intersection signal lamp control program, the congestion level at each crossing in same section can be obtained in real time, the traffic lights duration of each signal lamp is changed in time based on crossing congestion degree, keep the signal between each signal lamp to link simultaneously, farthest utilize existing urban traffic road, the passage rate of road can be improved in each time period adaptively.
Summary of the invention
In order to solve the problem, the invention provides a kind of traffic intersection signal lamp adaptive control system, introduce crossing camera to take crossing image, the use network bandwidth is high, wide coverage, the transmission of the 4G real-time performance crossing image that velocity of propagation is fast, at remote monitoring platform, place identifies the automobile in the image of crossing, automobile quantity is added up, thus determine the congestion level at each crossing, select congestion level change greatly, the signal lamp controlling priority high carries out priority acccess control, other signal lamp coordinated signals, steering logic is clear, improve self-adaptation degree and control efficiency, effectively improve urban transportation present situation.
According to an aspect of the present invention, provide a kind of traffic intersection signal lamp adaptive control system, described control system comprises multiple camera, multiple traffic controller and remote monitoring platform, camera and traffic controller one_to_one corresponding, each camera correspondence connects a traffic controller, crossing for the signal lamp place controlled corresponding signal lamp controller is taken, obtain crossing image, traffic controller is to crossing image compression encoding, play UDP bag to export crossing image network data, remote monitoring platform connects multiple traffic controller to obtain multiple crossings image network data by 4G network, and based on multiple signal lamp adaptive controls that multiple crossings image network data control respectively to multiple traffic controller.
More specifically, in described traffic intersection signal lamp adaptive control system, each traffic controller also comprises, image encoder, camera corresponding to connection signal lamp controller, to the crossing image compression encoding received, obtains crossing image coded data, 4G network interface, connects image encoder, plays UDP bag to obtain crossing image network data, crossing image network data are sent to remote monitoring platform by 4G network to crossing image coded data, and by 4G network reception control data, opertaing device, connects 4G network interface, controls red light duration and the green light duration of respective signal lamp according to the control data received, described remote monitoring platform also comprises, traffic controller priority level initializing equipment, according to the input of managerial personnel, sets the priority of multiple traffic controller, 4G network interface, connect 4G network, multiple control datas that Decision Control equipment exports, to obtain multiple crossings image coded data, are also sent to corresponding traffic controller by 4G network by multiple crossing image coded data XieUDPBao respectively that send respectively multiple traffic controller, image decoder, connects 4G network interface, for the decoding of multiple crossings image coded data, obtains multiple crossings image, congestion index analytical equipment, connects image decoder, for waiting for that the vehicle fleet size of red light is analyzed in the image of multiple crossings, to obtain multiple crossing congestion index respectively, memory device, for storing multiple history crossing congestion index, and prestore signal lamp linkage algorithm and predetermined congestion index threshold value, Decision Control equipment, respectively with traffic controller priority level initializing equipment, congestion index analytical equipment, memory device is connected with 4G network interface, find crossing congestion index based on multiple crossing congestion exponential sums multiple history crossing congestion index and change obvious crossing with multiple congestion index that the difference of corresponding history crossing congestion index is greater than predetermined congestion index threshold value, and based on the priority of multiple traffic controller, change in the multiple traffic controllers corresponding respectively of obvious crossing in multiple congestion index and find the highest traffic controller of priority as priority acccess control traffic controller, based on the control data of the crossing congestion index determination priority acccess control traffic controller of priority acccess control traffic controller, described control data is used for red light duration and the green light duration of control signal lamp, and the control data of other traffic controllers is determined based on signal lamp linkage algorithm, multiple crossing congestion index is stored into memory device using as multiple history crossing congestion index simultaneously, wherein, multiple signal lamps that multiple traffic controller controls respectively are in same section, described signal lamp linkage algorithm carries out coordinated signals for realizing to red light duration of multiple signal lamps in same section and green light duration, with when red light duration of a signal lamp or green light duration change, the red light duration of other signal lamps and green light duration respective change, wherein, describedly wait for that the vehicle fleet size of red light is analyzed in the image of multiple crossings, comprise to obtain multiple crossing congestion index respectively, crossing congestion index to wait in the image of crossing that the vehicle fleet size of red light is directly proportional, the control data of the described crossing congestion index determination priority acccess control traffic controller based on priority acccess control traffic controller comprises, the crossing congestion index of priority acccess control traffic controller is higher, and the red light duration that the control data of priority acccess control traffic controller controls is shorter, the green light duration is longer.
More specifically, in described traffic intersection signal lamp adaptive control system, described 4G network is TD-LTE network.
More specifically, in described traffic intersection signal lamp adaptive control system, described camera is high-definition camera, and the resolution of the crossing image exported is 1280 × 720,1920 × 1080 or 1420 × 1080.
More specifically, in described traffic intersection signal lamp adaptive control system, described image encoder is based on MPEG-4 compressed format standard to the crossing image compression encoding received, and described image decoder is decoded to multiple crossings image coded data based on MPEG-4 compressed format standard.
More specifically, in described traffic intersection signal lamp adaptive control system, described control system also comprises, multiple managerial personnel's communication terminal, the 4G network interface of described remote monitoring platform is connected, for receiving and checking multiple control datas that described Decision Control equipment exports respectively by 4G network.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
Fig. 1 is the block diagram of the traffic intersection signal lamp adaptive control system illustrated according to an embodiment of the present invention.
Fig. 2 is the block diagram of the traffic controller of the traffic intersection signal lamp adaptive control system illustrated according to an embodiment of the present invention.
Fig. 3 is the block diagram of the remote monitoring platform of the traffic intersection signal lamp adaptive control system illustrated according to an embodiment of the present invention.
Embodiment
Below with reference to accompanying drawings the embodiment of traffic intersection signal lamp adaptive control system of the present invention is described in detail.
Because urban central zone is to the excessive gathering of resource, such as, large hospital is generally built up in area, down town, and administrative department of municipal government is also respectively near central regions, public place of entertainment is arranged on down town resident's accumulation area etc., causes the trip of city dweller to concentrate on city.Further, along with the raising of people's living standard, automobile trip becomes trend.Like this, often be on duty peak period, or amusement at weekend concentrative time interval, main section in city all presents jam, on the one hand, reduces the efficiency of trip, inconvenience is brought to live and work, on the other hand, more tail gas discharged by the automobile of slow running, defines serious environmental pollution.
In increase road space, regulate outside the magnitude of traffic flow with economic means, plan traffic lights better, the traffic traffic flow at each crossing is made to reach maximum, and keep the good interlock of each traffic lights in same section, it is a kind of more scientific more reasonably road conditions improving countermeasure, both energy-conserving and environment-protective, pay wages again not high, become the traffic administration mode of city traffic management department preference.But existing traffic lights programme changes the signal lamp traffic lights duration based on the time period, and control model is fixed, and the traffic capacity at each crossing is not fairly well-developed out yet.
Traffic intersection signal lamp adaptive control system of the present invention, the congestion level at each crossing in same section can be determined in real time, the signal lamp traffic lights duration at each crossing is determined according to congestion level self-adaptation, farthest develop the traffic capacity at each crossing, simultaneously real-time, more flexible than existing scheme.
Fig. 1 is the block diagram of the traffic intersection signal lamp adaptive control system illustrated according to an embodiment of the present invention, described control system comprises n camera 1, n traffic controller 2 and remote monitoring platform 3, n be greater than 1 natural number, camera 1 and traffic controller 2 one_to_one corresponding, each camera 1 correspondence connects a traffic controller 2, crossing for the signal lamp place controlled corresponding signal lamp controller 2 is taken, obtain crossing image, traffic controller 2 pairs of crossing image compression encodings, play UDP bag to export crossing image network data, remote monitoring platform 3 connects multiple traffic controller 2 to obtain multiple crossings image network data by 4G network, and based on multiple signal lamp adaptive controls that multiple crossings image network data control respectively to multiple traffic controller 2.
Below, more specific description is carried out to the structure of traffic intersection signal lamp adaptive control system.
Fig. 2 is the block diagram of the traffic controller 2 of the traffic intersection signal lamp adaptive control system illustrated according to an embodiment of the present invention, each traffic controller 2 comprises, image encoder 21, camera 1 corresponding to connection signal lamp controller 2, to the crossing image compression encoding received, obtain crossing image coded data; 4G network interface 22, connects image encoder 21, plays UDP bag to obtain crossing image network data, crossing image network data are sent to remote monitoring platform 3 by 4G network to crossing image coded data, and by 4G network reception control data; Opertaing device 23, connects 4G network interface 22, controls red light duration and the green light duration of respective signal lamp according to the control data received.
Fig. 3 is the block diagram of the remote monitoring platform 3 of the traffic intersection signal lamp adaptive control system illustrated according to an embodiment of the present invention.Described remote monitoring platform 3 comprises, traffic controller priority level initializing equipment 31, according to the input of managerial personnel, sets the priority of multiple traffic controller 2; 4G network interface 34, connect 4G network, the multiple crossing image coded data XieUDPBao sent respectively multiple traffic controller 2 are to obtain multiple crossings image coded data, and the multiple control datas also exported by Decision Control equipment 36 are sent to corresponding traffic controller 2 respectively by 4G network; Image decoder 35, connects 4G network interface 34, for the decoding of multiple crossings image coded data, obtains multiple crossings image; Congestion index analytical equipment 33, connects image decoder 35, for waiting for that the vehicle fleet size of red light is analyzed in the image of multiple crossings, to obtain multiple crossing congestion index respectively; Memory device 32, for storing multiple history crossing congestion index, and prestore signal lamp linkage algorithm and predetermined congestion index threshold value; Decision Control equipment 36, respectively with traffic controller priority level initializing equipment 31, congestion index analytical equipment 33, memory device 32 is connected with 4G network interface 34, find crossing congestion index based on multiple crossing congestion exponential sums multiple history crossing congestion index and change obvious crossing with multiple congestion index that the difference of corresponding history crossing congestion index is greater than predetermined congestion index threshold value, and based on the priority of multiple traffic controller 2, change in the multiple traffic controllers 2 corresponding respectively of obvious crossing in multiple congestion index and find the highest traffic controller of priority 2 as priority acccess control traffic controller, based on the control data of the crossing congestion index determination priority acccess control traffic controller of priority acccess control traffic controller, described control data is used for red light duration and the green light duration of control signal lamp, and the control data of other traffic controllers 2 is determined based on signal lamp linkage algorithm, multiple crossing congestion index is stored into memory device 32 using as multiple history crossing congestion index simultaneously.
Wherein, multiple signal lamps that multiple traffic controller 2 controls respectively are in same section, described signal lamp linkage algorithm carries out coordinated signals for realizing to red light duration of multiple signal lamps in same section and green light duration, with when red light duration of a signal lamp or green light duration change, the red light duration of other signal lamps and green light duration respective change; Describedly wait for that the vehicle fleet size of red light is analyzed in the image of multiple crossings, comprise to obtain multiple crossing congestion index respectively, crossing congestion index to wait in the image of crossing that the vehicle fleet size of red light is directly proportional, the control data of the described crossing congestion index determination priority acccess control traffic controller based on priority acccess control traffic controller comprises, the crossing congestion index of priority acccess control traffic controller is higher, and the red light duration that the control data of priority acccess control traffic controller controls is shorter, the green light duration is longer.
Wherein, described 4G network is chosen as TD-LTE network, described camera 1 is chosen as high-definition camera, the resolution of the crossing image exported is 1280 × 720, 1920 × 1080 or 1420 × 1080, described image encoder 21 based on MPEG-4 compressed format standard to the crossing image compression encoding received, described image decoder 35 is decoded to multiple crossings image coded data based on MPEG-4 compressed format standard, described control system also can comprise multiple managerial personnel's communication terminal, the 4G network interface 34 of described remote monitoring platform 3 is connected respectively by 4G network, for receiving and checking multiple control datas that described Decision Control equipment exports.
In addition, 4G, namely forth generation mobile phone mobile communication standard, refers to forth generation mobile communication technology.This technology comprises TD-LTE and FDD-LTE two kinds of standards, on stricti jurise, 4G is 3.5G, although LTE is promoted as 4G wireless standard, but he is not in fact by the of future generation wireless communication standard IMT-Advanced of 3GPP accreditation described by International Telecommunications Union (ITU), and therefore it does not also reach the standard of 4G in a strict sense.The LTE Advanced of upgrade version is only had just to meet the requirement of International Telecommunications Union (ITU) to 4G.4G integrates 3G and WLAN, and can quick data transfering, high-quality, audio frequency, video and image etc.4G can download with the speed of more than 100Mbps, than fast 20 times current of family expenses broadband A/D SL (4,000,000), and can meet the requirement of nearly all user for wireless service.In addition, 4G can not have chlamydate place to dispose at DSL and Cable Modem, and then expands to whole distract.Clearly, 4G has incomparable superiority.
4G mobile system network structure can be divided into three layers: physical network layer, middle environment layer, application network layer.Physical network layer provides access and routing function, and they are completed by wireless and association scheme that is core net.The function of middle environment layer has QoS mapping, address mapping and completeness management etc.Interface between physical network layer and middle environment layer and applied environment thereof is open, and he makes development and provides new application and service to become more easy, provides the wireless service of seamless High Data Rate, and runs on multiple frequency band.This multiple wireless standard of service energy self-adaptation and multimode terminal ability, cross over multiple network operator and service, provide and serve on a large scale.The gordian technique of forth generation mobile communication system comprises transmission; The high-speed access technology of strong interference immunity, modulation and the information transmission technology; The adaptive array smart antenna of high-performance, miniaturization and low cost; The wave point of Large Copacity, low cost and optical interface; System administration resources; Software radio, network structure agreement etc.Forth generation mobile communication system mainly with OFDM (OFDM) for technological core.
In addition, MPEG-4 is a set of compression and coding standard for audio frequency, video information, by " dynamic image expert group " (Moving Picture Experts Group of ISO (International Standards Organization) (ISO) and International Electrotechnical Commission (IEC) subordinate, i.e. MPEG) formulate, first published passed through in October, 1998, and the second edition was passed through in Dec, 1999.The main application of MPEG-4 form is that web stream, CD, voice send (visual telephone), and television broadcasting.
MPEG-4 contains exhausted most function of MPEG-1 and MPEG-2 and the strong point of extended formatting, and add and expand the support to VRML (Virtual Reality Modeling Language) VRML, OO synthesis archives (comprise audio, video signal and VRML object), and digital copyright management (DRM) and other interaction functions.And one of them feature that MPEG-4 is more advanced than MPEG-2, be exactly do not re-use macro zone block to do image analysing computer, but with individual for change records on image, although when therefore image pace of change is very fast, code check is not enough, also there will not be square picture.
Adopt traffic intersection signal lamp adaptive control system of the present invention, control model for existing traffic intersection signal lamp programme is fixed, the traffic of each crossing reality cannot be caught up with in real time, the technical matters that control efficiency is not high, adopt the mode of 4G Wireless Data Transmission, ensure the quick of data, accurately, the transmission that gamut covers, vehicle identification is carried out to the image that each crossing collects simultaneously, vehicle fleet size is added up, and calculate the congestion index at each crossing further, based on the situation of change of the congestion index at each crossing, formulate the linkage pattern of each signal lamp at each crossing place, farthest make use of the traffic route at each crossing, certain positive role is served to the alleviation of urban road blocking.
Be understandable that, although the present invention with preferred embodiment disclose as above, but above-described embodiment and be not used to limit the present invention.For any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (2)
1. a traffic intersection signal lamp adaptive control system, it is characterized in that, described control system comprises multiple camera, multiple traffic controller and remote monitoring platform, camera and traffic controller one_to_one corresponding, each camera correspondence connects a traffic controller, crossing for the signal lamp place controlled corresponding signal lamp controller is taken, obtain crossing image, traffic controller is to crossing image compression encoding, play UDP bag to export crossing image network data, remote monitoring platform connects multiple traffic controller to obtain multiple crossings image network data by 4G network, and based on multiple signal lamp adaptive controls that multiple crossings image network data control respectively to multiple traffic controller.
2. traffic intersection signal lamp adaptive control system as claimed in claim 1, is characterized in that:
Each traffic controller also comprises
Image encoder, the camera corresponding to connection signal lamp controller, to the crossing image compression encoding received, obtains crossing image coded data;
4G network interface, connects image encoder, plays UDP bag to obtain crossing image network data, crossing image network data are sent to remote monitoring platform by 4G network to crossing image coded data, and by 4G network reception control data;
Opertaing device, connects 4G network interface, controls red light duration and the green light duration of respective signal lamp according to the control data received;
Described remote monitoring platform also comprises
Traffic controller priority level initializing equipment, according to the input of managerial personnel, sets the priority of multiple traffic controller;
4G network interface, connect 4G network, multiple control datas that Decision Control equipment exports, to obtain multiple crossings image coded data, are also sent to corresponding traffic controller by 4G network by multiple crossing image coded data XieUDPBao respectively that send respectively multiple traffic controller;
Image decoder, connects 4G network interface, for the decoding of multiple crossings image coded data, obtains multiple crossings image;
Congestion index analytical equipment, connects image decoder, for waiting for that the vehicle fleet size of red light is analyzed in the image of multiple crossings, to obtain multiple crossing congestion index respectively;
Memory device, for storing multiple history crossing congestion index, and prestore signal lamp linkage algorithm and predetermined congestion index threshold value;
Decision Control equipment, respectively with traffic controller priority level initializing equipment, congestion index analytical equipment, memory device is connected with 4G network interface, find crossing congestion index based on multiple crossing congestion exponential sums multiple history crossing congestion index and change obvious crossing with multiple congestion index that the difference of corresponding history crossing congestion index is greater than predetermined congestion index threshold value, and based on the priority of multiple traffic controller, change in the multiple traffic controllers corresponding respectively of obvious crossing in multiple congestion index and find the highest traffic controller of priority as priority acccess control traffic controller, based on the control data of the crossing congestion index determination priority acccess control traffic controller of priority acccess control traffic controller, described control data is used for red light duration and the green light duration of control signal lamp, and the control data of other traffic controllers is determined based on signal lamp linkage algorithm, multiple crossing congestion index is stored into memory device using as multiple history crossing congestion index simultaneously,
Wherein, multiple signal lamps that multiple traffic controller controls respectively are in same section, described signal lamp linkage algorithm carries out coordinated signals for realizing to red light duration of multiple signal lamps in same section and green light duration, with when red light duration of a signal lamp or green light duration change, the red light duration of other signal lamps and green light duration respective change;
Wherein, describedly wait for that the vehicle fleet size of red light is analyzed in the image of multiple crossings, comprise to obtain multiple crossing congestion index respectively, crossing congestion index to wait in the image of crossing that the vehicle fleet size of red light is directly proportional, the control data of the described crossing congestion index determination priority acccess control traffic controller based on priority acccess control traffic controller comprises, the crossing congestion index of priority acccess control traffic controller is higher, the red light duration that the control data of priority acccess control traffic controller controls is shorter, the green light duration is longer
Described 4G network is TD-LTE network.
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| CN201510257277.7A Active CN104794914B (en) | 2014-08-24 | 2014-08-24 | traffic intersection signal lamp adaptive control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108288388A (en) * | 2018-01-30 | 2018-07-17 | 深圳源广安智能科技有限公司 | A kind of intelligent traffic monitoring system |
| CN108806283A (en) * | 2017-05-02 | 2018-11-13 | 中移物联网有限公司 | A kind of control method and car networking platform of traffic lights |
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| CN104916066B (en) * | 2014-08-24 | 2016-06-22 | 扬州市鑫通交通器材集团有限公司 | traffic intersection signal lamp adaptive control system |
| CN104732766B (en) * | 2015-04-08 | 2016-01-06 | 海安常大技术转移中心有限公司 | Traffic intersection congestion index detection method before signal lamp |
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Also Published As
| Publication number | Publication date |
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| CN104835333A (en) | 2015-08-12 |
| CN104835333B (en) | 2016-03-16 |
| CN104794914A (en) | 2015-07-22 |
| CN104916066B (en) | 2016-06-22 |
| CN104157155A (en) | 2014-11-19 |
| CN104157155B (en) | 2015-10-07 |
| CN104794914B (en) | 2015-12-30 |
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