CN104794909B - The prevention of intersection traffic obstruction and automatic emergency processing system and its processing method - Google Patents
The prevention of intersection traffic obstruction and automatic emergency processing system and its processing method Download PDFInfo
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- CN104794909B CN104794909B CN201510165173.3A CN201510165173A CN104794909B CN 104794909 B CN104794909 B CN 104794909B CN 201510165173 A CN201510165173 A CN 201510165173A CN 104794909 B CN104794909 B CN 104794909B
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Abstract
The invention discloses a kind of prevention of intersection traffic obstruction and automatic emergency processing system, it is characterised in that the system includes image capture unit, for obtaining crossing video image；Image analyzing unit, the crossing video image is analyzed, to find crossing a direction traffic congestion；Network cloud data and cloud computing unit, the traffic congestion of the junction perimeter for obtaining obstruction junction node, and judge that can the obstruction at current crossing be digested by periphery road network in a short time；Signalized control computer, corresponding signal lamp phase meter is generated according to network cloud data and the judged result of cloud computing unit, and distribute to belisha beacon control machine.The purpose of present system is that the computer system before " deadlock " really occurs is found automatically, and by changing the means such as traffic lights phase bit timing, alleviates crossing vehicle as possible and overstock state, avoid crossing traffic " deadlock " as far as possible.And simultaneously, the system energy automatic alarm when crossing traffic " deadlock " really occurs issues information warning, while uses extreme signals lamp phase, controls coverage.
Description
Technical field
The present invention relates to field of road traffic, and in particular to a kind of prevention of intersection traffic obstruction and automatic emergency processing
System.
Background technology
Since reform and opening-up, with the rapid growth of national economy, urbanization obtains effectively as national development direction
Promote, the thing followed is the tremendous expansion of metropolitan population and car ownership.Urban traffic blocking is each with the city whole nation
The problem of individual city faces jointly.And as an archaism " haste brings no success ", on the road of congestion, rational traffic
Order is more easily damaged.Particularly at intersection, the crowded caused vehicle in a direction overstocks, and can finally make road
The traffic in other directions of mouth is all affected, and congestion turns into obstruction, and crossing traffic enters " deadlock "（Deadlock）State, make original
The traffic of this other direction originally not congestion paralyses, and then influences the efficiency of whole traffic network, serious waste society road
Road resource.
The deadlock of crossing traffic is a progressive process.When under jam situation, green light signals phase can not be arranged effectively
When solving the current demand of crossing vehicle, vehicle gradually overstocks.It can not still lead to after one or more green light cycles simultaneously
When crossing current crossing, the in-mind anticipation of license traveling and the real drop of congested with cars can cause it more wild when its green light lights
Rough drive manner, cross stop line with seizing every opportunity it is expected to obtain preferential traveling power, overstock in crossing space, the crossing of occupancy
Space makes the traffic in other directions of crossroad also interrupt in the lump, turn into we term it junction node " deadlock ".
The content of the invention
, can be effective it is an object of the invention to provide a kind of prevention of intersection traffic obstruction and automatic emergency processing system
Prevent or slow down junction node " deadlock " phenomenon.
To achieve these goals, technical scheme is as follows：A kind of intersection traffic obstruction prevention and automatic
Emergent treatment system, it is characterised in that the system includes image capture unit, for obtaining crossing video image；Graphical analysis
Unit, the crossing video image is analyzed, to find crossing a direction traffic congestion；Network cloud data and cloud meter
Unit is calculated, the traffic congestion of the junction perimeter for obtaining obstruction junction node, and judge that can the obstruction at current crossing
Digested in a short time by periphery road network；Signalized control computer, if network cloud data and cloud computing unit judges are current
The obstruction at crossing can be digested by periphery road network in a short time, then the signal lamp that all directions are adjusted according to road network situation is matched somebody with somebody
When, if the obstruction at network cloud data and the current crossing of cloud computing unit judges can not be digested by periphery road network in a short time,
It is deadlock state then to note down current crossing, and generates extremely whole crossing red eye phase meters, closes this crossing.
, can another object of the present invention is to provide a kind of intersection traffic obstruction prevention and automatic emergency processing method
Effectively prevent or slow down junction node " deadlock " phenomenon.
To achieve these goals, technical scheme is as follows：A kind of intersection traffic obstruction prevention and automatic
Emergency processing method, it is characterised in that the described method comprises the following steps：A, crossing video image is obtained by image capture unit；
B, image analyzing unit is analyzed the crossing video image, to find crossing a direction traffic congestion；C, network
Cloud data and cloud computing unit obtain the traffic congestion of the junction perimeter of obstruction junction node, and judge the resistance at current crossing
Can plug be digested by periphery road network in a short time, if being then transferred to A, if being otherwise transferred to D；D, judge whether this crossing has it
Its multiple directions congestion, is then transferred to E in this way, is such as otherwise transferred to F；E, it is deadlock state to note down current state, and is generated extremely complete
Portion crossing red eye phase meter, closes this crossing；F, record works as front direction congestion, while terminates the green of cur-rent congestion direction
Lamp phase；G, the urban transportation big data at surrounding crossing is obtained；H, the cloud computing combination junction perimeter volume of traffic, phase time are passed through
Data, generate current belisha beacon multiphase traffic time allocation and distribute to Signalized control machine.Wherein in stepb, at the crossing
Virtual detection coil is set in video image, the virtual detection coil is one trapezoidal, and trapezoidal upper bottom is crossing exit width,
Go to the bottom as crossing overall with, a height of horizontal crossing width, after two green light cycles in virtual detection coil vehicle still without movement
When, then it is judged as crossing traffic congestion.
The advantage of the invention is that system can be found automatically before " deadlock " really occurs, and by changing traffic signals
The means such as lamp phase bit timing, alleviate crossing vehicle as possible and overstock state, avoid crossing traffic " deadlock " as far as possible.And simultaneously,
System can use extreme signals lamp phase when crossing traffic " deadlock " really occurs, and control coverage, while can also realize certainly
Dynamic alarm, issues information warning.
Brief description of the drawings
Fig. 1 is the structured flowchart of the present invention.
Fig. 2 is the workflow diagram of the present invention.
Fig. 3 is the set location of virtual detection coil.
Embodiment
As illustrated, a kind of intersection traffic obstruction prevention and automatic emergency processing system, it is characterised in that the system
System includes image capture unit, for obtaining crossing video image；Image analyzing unit, the crossing video image is divided
Analysis, to find crossing a direction traffic congestion；Network cloud data and cloud computing unit, for obtaining obstruction junction node
The traffic congestion of junction perimeter, and judge that can the obstruction at current crossing be digested by periphery road network in a short time；Letter
Signal lamp control computer, if the obstruction at network cloud data and the current crossing of cloud computing unit judges can be in a short time by Zhou Bianlu
Net is digested, then the traffic signal timing of all directions is adjusted according to road network situation, and distributes to belisha beacon control machine, if net
The obstruction at network cloud data and the current crossing of cloud computing unit judges can not be digested by periphery road network in a short time, then record is worked as
Preceding crossing is deadlock state, and generates extremely whole crossing red eye phase meters, distributes to belisha beacon control machine, is closed
Close this crossing.
（1）Front-end image is caught
The each main crossroads in each big city in China are provided with crossing surveillance camera or candid camera violating the regulations at present,
Its image obtained or the image obtained after appropriate reconstruction can be as the image analysis information sources of the system.In particular with
The popularization of high-definition digital camera system, big visual field high-definition picture can provide more accurately basis of characterization for system.System needs
Can the compatible ability for accessing main flow camera video image.
（2）Image analyzing unit uses computer pattern recognition, on the video images the virtual inspection of specific region division
Test coil.As illustrated, the virtual detection coil is that a crossing export direction is narrower, wider trapezoidal of crossing Way in should
Virtual detection coil is one trapezoidal, and trapezoidal upper bottom is crossing exit width L1, is gone to the bottom as crossing overall with L2, a height of horizontal crossing
Width L3.When vehicle attempt to leave since the outlet of top crossing and congestion when, because crossing exit lane quantity fixes, space
It is limited, and mood of the crossing entrance vehicle due to attempting to obtain current power in epicycle green time as previously described, it can sail as possible
Crossing stop line is crossed, crossing export direction is narrower, and crossing Way in is wider so as to cause vehicle slowly to overstock to be formed
Triangle formation.Therefore, computer image analysis, when picture element density is more than 60% shared by vehicle in virtual ladder-shaped frame, it is believed that
When this direction crossing has been filled with stopping waiting automobile., can when traffic density is still more than 60% in virtual coil after two green light cycles
It is judged as crossing Severe blockage and deadlock may be caused.The traffic lights phase bit timing at current crossing is gathered simultaneously.Will be current
The signal lamp phase time table at crossing and the image of crossing uploading system rear end.
（3）Network cloud data and cloud computing
With the progress of network IT technologies, city big data developing stage is perfect all the more, current popular cloud
Also so that the quick processing of big data, storage are possibly realized.Using the traffic big data in the big data of city, contain and work as proparea
The situation of traffic flow data in the range of domain, available for the junction perimeter particularly downstream road junction node for obtaining obstruction junction node
Traffic congestion.Due to the ability of cloud computing so that calmodulin binding domain CaM traffic big data calculates reflection in very short time
Clean up time T at current crossing, clean up time are calculated as prior art, will not be repeated here.Meanwhile according to current crossing
The ratio of the import volume of traffic and the outflow volume of traffic obtains coefficient x, and when obtaining belisha beacon number of phases n and current multiphase traffic time allocation
Between t.
Work as T<During xt, being judged as the obstruction at current crossing can be remained stationary by normal stool, each system；
Work as nt>During T >=xt, judge that current crossing congestion is difficult to digest, it is necessary to change traffic signal timing scheme；Then according to road
Net situation adjusts the traffic signal timing of all directions, downloads and suggests that timing scheme to crossing traffic signal management computer, passes through
Traffic signaling equipment extends unobstructed direction traffic lights split, and limitation congestion direction vehicle enters crossing.And with a complete signal
The lamp cycle is that time interval constantly updates peripheral path traffic conditions in real time, and the timing scheme of renewal is downloaded in adjustment.Thus this is big
The calculating of capacity and data acquisition depend on the construction of social cloud system.
As T >=nt, then it is judged as current crossing obstruction, crossing is determined as deadlock by system.Now, on the one hand by complete
Direction is closed outside crossing right of way signal lamp protection crossing, more using metropolitan area road grid traffic cloud data and cloud computing ability, is calculated
The optimization pass at " deadlock " crossing is got around, society is informed by social Traffic information demonstration means.Remind public vehicles around
Act hair crossing.Reduce and control impacted scope.
It is prior art on specific network cloud data and cloud computing algorithm, the present invention is not related to specific data point
Analysis and Processing Algorithm, therefore repeat no more.
（4）Signal time distributing conception is issued and alarm issue
Using existing urban traffic control platform, system access authority is only needed, you can realize that Signalized control machine is remotely matched somebody with somebody
When scheme renewal issue and the issue of Surveillance center alarm signal.Surveillance center can according to system alarm and live realtime graphic,
Transfer police's floor manager etc..
Specifically judge that flow refers to the workflow diagram of accompanying drawing 2.
The system is by front-end image capture unit, image analyzing unit, network cloud data and cloud computing unit, signal lamp control
Computer and crossing signals lamp controller processed is realized.Whole system can utilize the existing traffic control equipment in most of city,
Only need to do its function further detailed design and expansion, realize that feasibility is larger.
The generation of crossing deadlock is a progressive process, and a variety of intervention measures can be taken before final deadlock state, reason
It can effectively prevent crossing deadlock by upper.
The system approves that traffic lights and traffic police personnel are still crossing traffic and command most reasonable effective manner.But
Current traffic signal lamp system is not enough to prevent the deterioration of crossing congestion situation to avoid the formation of crossing traffic deadlock.This is
System attempts to obtain the identification of crossing blocked state by image recognition, and utilizes traffic big data and cloud computing convenience, by counting
Calculation machine system intelligent decision crossing traffic blocks development trend.As system judges that crossing state will further deteriorate, then need in time
Change signal lamp phase bit timing, prevent the vehicle in congestion direction from traveling further into crossing, ensure the current of non-congestion direction traffic
Right, reduce the possibility occurrence of crossing traffic deadlock state.
When the intervention of signal lamp phase adjustment is not avoided that crossing traffic deadlock occurs still, system judges that crossing is locked,
All directions traffic is current can not possibly to be realized.The modes such as the equal red light phase of crossing omnirange are used under such extreme case,
Crossing space is protected, the evacuation for waiting crossing inner product to delay unloading.Simultaneity factor automatic alarm, alarm signal and current live is real
Apply image and upload city traffic management department, traffic police personnel are coordinated by administrative department and go floor manager to dredge.Band crossing order is extensive
Start normal signal lamp phase bit timing after multiple.
Idiographic flow is as follows：
A kind of intersection traffic obstruction prevention and automatic emergency processing method, it is characterised in that methods described includes following
Step：A, crossing video image is obtained by image capture unit；B, image analyzing unit divides the crossing video image
Analysis, to find crossing a direction traffic congestion；C, network cloud data and cloud computing unit obtain the week of obstruction junction node
The traffic congestion of wing mouth, and judge that can the obstruction at current crossing be digested by periphery road network in a short time, if
The traffic signal timing of all directions is then adjusted according to road network situation, and is transferred to A, if being otherwise transferred to D；D, judge whether this crossing has
Other multiple directions congestions, are then transferred to E in this way, are such as otherwise transferred to F；E, it is deadlock state to note down current state, and is generated extreme
Whole crossing red eye phase meters, close this crossing；F, record works as front direction congestion, and terminates cur-rent congestion direction ahead of time
Green light phase；G, the urban transportation big data at surrounding crossing is obtained；H, the cloud computing combination junction perimeter volume of traffic, phase are passed through
Time data, generate current belisha beacon multiphase traffic time allocation and distribute to Signalized control machine.
Claims (2)
1. a kind of intersection traffic obstruction prevention and automatic emergency processing system, it is characterised in that the system is caught including image
Unit is caught, for obtaining crossing video image；Image analyzing unit, the crossing video image is analyzed, to find
Crossing a direction traffic congestion, when picture element density shared by vehicle in virtual detection coil exceedes setting numerical value, it is believed that the road
Mouth be full of automobile, and the virtual detection coil is narrower for crossing export direction, wider trapezoidal of crossing Way in, green at two
When vehicle is remained unchanged without movement in virtual detection coil after the lamp cycle, then it is judged as crossing traffic congestion；Network cloud data and cloud meter
Unit is calculated, the traffic congestion of the junction perimeter for obtaining obstruction junction node, and judge that can the obstruction at current crossing
Digested in a short time by periphery road network；Signalized control computer, if network cloud data and cloud computing unit judges are current
The obstruction at crossing can be digested by periphery road network in a short time, then the signal lamp that all directions are adjusted according to road network situation is matched somebody with somebody
When, if the obstruction at network cloud data and the current crossing of cloud computing unit judges can not be digested by periphery road network in a short time,
It is deadlock state then to note down current crossing, and generates extremely whole crossing red eye phase meters, closes this crossing.
2. a kind of intersection traffic obstruction prevention and automatic emergency processing method, it is characterised in that methods described includes following step
Suddenly：A, crossing video image is obtained by image capture unit；B, image analyzing unit is analyzed the crossing video image,
To find crossing a direction traffic congestion, virtual detection coil is set in the crossing video image, works as virtual detection
When picture element density shared by vehicle exceedes setting numerical value in coil, it is believed that the crossing is full of automobile, and the virtual detection coil is road
Mouthful export direction is narrower, and wider trapezoidal of crossing Way in, vehicle remains unchanged in virtual detection coil after two green light cycles
During without movement, then it is judged as crossing traffic congestion；C, network cloud data and cloud computing unit obtain the periphery of obstruction junction node
The traffic congestion at crossing, and judge that can the obstruction at current crossing be digested by periphery road network in a short time, if then
A is transferred to, if being otherwise transferred to D；D, judge whether this crossing there are other multiple directions congestions, be then transferred to E in this way, be such as otherwise transferred to F；
E, it is deadlock state to note down current state, and generates extremely whole crossing red eye phase meters, closes this crossing；F, record
When front direction congestion, while terminate the green light phase in cur-rent congestion direction；G, the urban transportation big data at surrounding crossing is obtained；H、
By the cloud computing combination junction perimeter volume of traffic, phase time data, generate current belisha beacon multiphase traffic time allocation and distribute to
Signalized control machine.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI624818B (en) * | 2016-11-11 | 2018-05-21 | 英業達股份有限公司 | System and method for switching a traffic sign |
| CN107170251A (en) * | 2017-07-06 | 2017-09-15 | 中国地质大学（武汉） | A kind of traffic police robot on duty for road and traffic guidance system |
| CN111260916A (en) * | 2018-11-30 | 2020-06-09 | 广州慧睿思通信息科技有限公司 | Intelligent traffic regulation and control method and system |
| CN116631192B (en) * | 2023-06-12 | 2024-03-29 | 上海优景智能科技股份有限公司 | Comprehensive management method and system for smart city |
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