CN103903465B - A kind of congestion in road reason real-time release method and system - Google Patents
A kind of congestion in road reason real-time release method and system Download PDFInfo
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Abstract
Congestion in road reason real-time release method and system of the present invention, video tracking technology is adopted to carry out Continuous Tracking to vehicle, the traffic on current road can be obtained in real time, and video tracking technology can be monitored the whole section within the scope of video tracking, the omnidistance situation in section can be reflected, and once occur blocking up, immediately the image of congestion regions can be sent to car-mounted terminal.Driver just can know block up reason and the congestion level of road ahead immediately according to image information.Congestion in road reason real-time release method and system of the present invention, all right accurate measurements is in real time to the exception parking situation on road surface, once exception parking appears in vehicle, whether no matter causing blocks up can both be sent to car-mounted terminal by the image of exception parking vehicle region.
Description
Technical field
The present invention relates to ITS Information and issue field, specifically a kind of congestion in road reason real-time release method and system.
Background technology
Along with Urban traffic demand increases fast, road traffic is day by day busy.The traffic congestion caused because of reasons such as motor vehicle flow is large, illegal activities, traffic hazard, vehicle trouble, icy road happens occasionally.For this reason, the information of the traffic that vehicle supervision department takes various method collection, analysis, process current, and result red, yellow, and green three kinds of colors are issued to traffic participant, when by trackside message panel or car-mounted terminal, traffic participant sees that road ahead traffic status is redness, can only illustrate that road ahead is heavy congestion, be actually seriously arrive what degree, last long, be blocking up of causing of what reason, traffic participant cannot be known, also just cannot determine whether select other routes to go to destination.
Existing patent documentation CN102930735A discloses a kind of city real-time traffic information dissemination method based on traffic video, cardinal principle is: a kind of city real-time traffic information dissemination method based on traffic video, the method comprises the step of following order: velocity information is uploaded to background server by Floating Car that (1) detects each section of road network in real time, and the traffic dynamic information around all control points is uploaded to background server by traffic video monitoring equipment in real time; (2) background server is according to the information acquisition state of Floating Car sample distribution and traffic video monitoring equipment, determines that real-time traffic states extracts result, in conjunction with transport information, divides traffic information and issues rank; (3) extract other FCD of each issue stage and video traffic information simultaneously, based on video mode, the public is issued.
In this technical scheme, there is following problem: 1, adopt Floating Car investigation method, it obtains data can not react the current real-time status of road network; 2, video check point adopts section detection mode can not reflect the omnidistance situation in section, can only lean on reckoning; 3, the information delay issued, general needs 5 minutes; 4, automatically image issue can not be carried out to the reason of blocking up of system-wide section.In sum, technique scheme poor accuracy, time delay is long.
Summary of the invention
Technical matters to be solved by this invention is of the prior art, can not issue the reason of congestion in road, non-normal stop real-time, fast automaticly, thus provide a kind of congestion in road reason real-time release method and system to mobile terminal.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The invention provides a kind of congestion in road reason real-time release method, comprise the steps:
S1: Continuous Tracking is carried out to each vehicle entered within the scope of video tracking;
S2: obtain each car respectively in the First Speed in the first moment and the second speed in the second moment;
S3: judge that whether described First Speed is equal with described second speed, if then enter step S4, otherwise enter step S5;
S4: judge whether the difference of described First Speed and described second speed is more than or equal to velocity contrast threshold value, if then enter step S6, otherwise returns step S1;
S5: judge whether described First Speed and described second speed are all less than or equal to threshold speed, if then enter step S6, otherwise return step S1;
S6: determine to occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image reason of blocking up.
Described congestion in road reason real-time release method, also comprises the steps: between described step S1 and step S2
A: judge whether the vehicle within the scope of video tracking is halted state, then enters step S2 if not, is, enter step B;
B: whether the vehicle that the vehicle heading dead ahead judging to be in halted state is close to is halted state, if then return step S1, otherwise enters step C;
C: obtain exception parking area image and be sent to car-mounted terminal.
Described congestion in road reason real-time release method, in described step B: the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.
Described congestion in road reason real-time release method, in described step C, when stop vehicle dead ahead is without next-door neighbour's stop vehicle, and when the time that this vehicle stops exceedes again judgment threshold T, obtains exception parking area image and is sent to car-mounted terminal.
Described congestion in road reason real-time release method, described judgment threshold T was more than or equal to for 3 seconds.
The present invention also provides a kind of congestion in road reason real-time publishing system, comprising:
Car-mounted terminal, is arranged to need to issue and blocks up on the vehicle of reason;
Video monitor unit, carries out Continuous Tracking to each vehicle entered within the scope of video tracking;
Speed acquiring unit, obtains each car within the scope of video tracking in the First Speed in the first moment and the second speed in the second moment;
First judging unit, judges that whether described First Speed is equal with described second speed;
Second judging unit, when described First Speed and described second speed unequal time, judge whether the difference of described First Speed and described second speed is more than or equal to velocity contrast threshold value;
3rd judging unit, when described First Speed is equal with described second speed, judges whether described First Speed and described second speed are all less than or equal to threshold speed;
Congestion information transmission unit, the difference of described First Speed and described second speed be more than or equal to described velocity contrast threshold value or described First Speed and described second speed be all less than or equal to described threshold speed time, determine to occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image reason of blocking up.
Described congestion in road reason real-time publishing system, also comprises:
Vehicle-state judging unit, for judging whether the vehicle within the scope of video tracking is halted state;
Exception parking judging unit, at described vehicle-state judging unit, when judging have vehicle to be halted state, judges that the vehicle heading dead ahead being in halted state is halted state with or without the vehicle be close to;
Exception parking alarm unit, during for stop vehicle in the vehicle heading dead ahead being in halted state without next-door neighbour, is sent to car-mounted terminal by exception parking area image.
Described congestion in road reason real-time publishing system, in described exception parking judging unit, the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.
Described congestion in road reason real-time publishing system, in described exception parking alarm unit, exception parking area image when stop vehicle dead ahead is without next-door neighbour's stop vehicle, and when the time that this vehicle stops exceedes judgment threshold T, is sent to car-mounted terminal by setting.
Described congestion in road reason real-time publishing system, in described exception parking alarm unit, sets described judgment threshold T and was more than or equal to for 3 seconds.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) congestion in road reason real-time release method and system of the present invention, video tracking technology is adopted to carry out Continuous Tracking to vehicle, the traffic on current road can be obtained in real time, and video tracking technology can be monitored the whole section within the scope of video tracking, the omnidistance situation in section can be reflected, and once occur blocking up, immediately the image of congestion regions can be sent to car-mounted terminal.Driver just can know block up reason and the congestion level of road ahead immediately according to image information.
(2) congestion in road reason real-time release method and system of the present invention, can in real time accurate measurements to the exception parking situation on road surface, once there is exception parking in vehicle, whether no matter causing blocks up can both be sent to car-mounted terminal by the image of exception parking vehicle region, and systemic-function is abundanter.
(3) congestion in road reason real-time release method and system of the present invention, judge vehicle whether exception parking time, set judgment threshold T.Situation vehicle can being avoided once stopping to be judged as exception parking by arranging judgment threshold occurs, further increases the accuracy of system.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein,
Fig. 1 is one embodiment of the invention congestion in road reason of the present invention real-time release method flow diagram;
Fig. 2 is congestion in road reason real-time release method flow diagram of the present invention described in one embodiment of the invention;
Fig. 3 is the theory diagram of congestion in road reason real-time publishing system of the present invention described in one embodiment of the invention;
Fig. 4 is the theory diagram of congestion in road reason real-time publishing system of the present invention described in one embodiment of the invention.
Embodiment
embodiment 1
The present embodiment provides a kind of congestion in road reason real-time release method, as shown in Figure 1, comprises the steps:
S1: Continuous Tracking is carried out to each vehicle entered within the scope of video tracking.
S2: obtain each car respectively in the First Speed in the first moment and the second speed in the second moment.
S3: judge that whether described First Speed is equal with described second speed, if then enter step S4, otherwise enter step S5.
S4: judge whether the difference of described First Speed and described second speed is more than or equal to velocity contrast threshold value, if then enter step S6, otherwise returns step S1.Wherein said velocity contrast threshold value is chosen flexibly according to road position and vehicle flowrate at that time.Such as can select velocity contrast threshold value=(First Speed-second speed) * 0.5.
S5: judge whether described First Speed and described second speed are all less than or equal to threshold speed, if then enter step S6, otherwise return step S1.Wherein said threshold speed is chosen flexibly according to road position and vehicle flowrate at that time.Such as can select 50% or 30% of this section speed limit etc.Such as, on general through street, the speed limit of vehicle is 100km/ hour, then the threshold speed that can arrange on this section is 30km/ hour.
S6: determine to occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image reason of blocking up.
In the present embodiment, video tracking technology is adopted to carry out Continuous Tracking to vehicle, the traffic on current road can be obtained in real time, and video tracking technology can be monitored the whole section within the scope of video tracking, the omnidistance situation in section can be reflected, and once occur blocking up, immediately the image of congestion regions can be sent to car-mounted terminal.Driver just can know block up reason and the congestion level of road ahead immediately according to image information.
In the present embodiment, adopting video tracking technology to carry out Continuous Tracking to the vehicle entered within the scope of video tracking, is means conventional in prior art.As a kind of implementation method, video tracking picture can regard a plane coordinate system as, and its transverse axis is x-axis, and the longitudinal axis is y-axis.Its position can be determined for each location point in this video pictures.And each car entered within the scope of video tracking, after Continuous Tracking, can be considered as a rectangle frame, x, y value corresponding to the center of rectangle frame can as the foundation determining its position in video pictures.In order to different vehicle be distinguished, one numbering can also be set for each car.Such as, numbering 001,002,003 ...Therefore, in each moment, the particular location of each vehicle of numbering in video pictures can both accurately be learnt.
In video tracking technology, the vehicle location in any two moment can be obtained, then according to the mistiming between two moment, car speed can be obtained immediately.Certainly the velocity information utilizing video tracking detection technique to obtain vehicle is also ripe means of the prior art, no longer describes in detail at this.
The first moment in the present embodiment and the mistiming between the second moment can set flexibly according to actual road conditions.Mistiming is shorter, and the result obtained is sensitiveer, and the mistiming that such as can set between two moment is 1s, 2s etc., also can be set to 1 minute.In addition, in the present embodiment, said first moment and the second moment are the concepts of a relative time.Such as, with the mistiming of 2 seconds for benchmark, so in vehicle continuous print process, just obtain the speed of a vehicle every two seconds, then the initial time of each time period was exactly the first moment, and the end time of each time period was for the second moment.
Ultimate principle in technique scheme is:
If the travel speed of vehicle at short notice just from fast to slow, i.e. Reduced Speed Now, and the speed reduced has exceeded again velocity contrast threshold value, then can think and necessarily occur that in this region some unexpected time causes vehicle speed retarding, therefore can think there occurs to block up.
And if the speed of vehicle all the time all lower than threshold speed, then can illustrate there occurs and block up in certain time.
As long as judging there occurs blocks up, then the image obtaining congestion regions is sent to car-mounted terminal.
Preferably, further, as shown in Figure 2, also comprise the steps: between described step S1 and described step S2
A: judge whether the vehicle within the scope of video tracking is halted state, then enters step S2 if not, is, enter step B;
B: whether the vehicle that the vehicle heading dead ahead judging to be in halted state is close to is halted state, if then return step S1, otherwise enters step C;
C: obtain exception parking area image and be sent to car-mounted terminal.
Adopt video tracking technology, when the position of a certain vehicle does not all change in two continuous frames or several frame data, then can assert that this vehicle is in halted state.Utilize Continuous Tracking technology, real-time monitoring the vehicle entered within the scope of video tracking is normally travel or be in halted state.When vehicle is in halted state, judge whether the vehicle of right ahead is in halted state immediately, if the vehicle of the dead ahead next-door neighbour of vehicle does not have halted state, then illustrate that this vehicle is exception parking, obtain exception parking area image and be sent to car-mounted terminal.
Preferably, in described step B: the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.Described distance threshold can be 1 meter, 3 meters, 5 meters, 10 meters, 20 meters etc.If the position be that is close in stop vehicle front and stop vehicle has vehicle to be in halted state, then illustrate that this vehicle does not belong to exception parking.This distance threshold dynamic adjusts, and the selection of occurrence is more low better with rate of false alarm.
Further, setting alarm threshold value T, when stop vehicle dead ahead, next-door neighbour's vehicle is not halted state, and when the time that this vehicle stops exceedes described judgment threshold T, obtains exception parking area image and be sent to car-mounted terminal.Described judgment threshold T was more than or equal to for 3 seconds, can select 5 seconds, 10 seconds.Situation vehicle can being avoided once stopping to be judged as exception parking by arranging judgment threshold occurs, further increases the accuracy of system.Therefore, if T was 5 seconds, when runway there being exception parking, then image can be sent to car-mounted terminal by system within 5 seconds, highly shortened the time noting abnormalities and stop, improve quick-reaction capability (QRC) and road efficiency.
embodiment 2
The present embodiment provides a kind of congestion in road reason real-time publishing system, as shown in Figure 3, comprising:
Car-mounted terminal, arranges and needs to issue to block up on the vehicle of reason.
Speed acquiring unit, obtains each car within the scope of video tracking in the First Speed in the first moment and the second speed in the second moment.
First judging unit, judges that whether described First Speed is equal with described second speed.
Second judging unit, when described First Speed and described second speed unequal time, judge whether the difference of described First Speed and described second speed is more than or equal to velocity contrast threshold value.Wherein said velocity contrast threshold value is chosen flexibly according to road position and vehicle flowrate at that time.Such as can select velocity contrast threshold value=(First Speed-second speed) * 0.5.
3rd judging unit, when described First Speed is equal with described second speed, judges whether described First Speed and described second speed are all less than or equal to threshold speed.Wherein said threshold speed is chosen flexibly according to road position and vehicle flowrate at that time.Such as can select 50% or 30% of this section speed limit etc.Such as, on general through street, the speed limit of vehicle is 100km/ hour, then the threshold speed that can arrange on this section is 30km/ hour.
Congestion information transmission unit, the difference of described First Speed and described second speed be more than or equal to described velocity contrast threshold value or described First Speed and described second speed be all less than or equal to described threshold speed time, determine to occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image reason of blocking up.
In the present embodiment, video tracking technology is adopted to carry out Continuous Tracking to vehicle, the traffic on current road can be obtained in real time, and video tracking technology can be monitored the whole section within the scope of video tracking, the omnidistance situation in section can be reflected, and once occur blocking up, immediately the image of congestion regions can be sent to car-mounted terminal.Driver just can know block up reason and the congestion level of road ahead immediately according to image information.
In the present embodiment, adopting video tracking technology to carry out Continuous Tracking to the vehicle entered within the scope of video tracking, is means conventional in prior art.As a kind of implementation method, video tracking picture can regard a plane coordinate system as, and its transverse axis is x-axis, and the longitudinal axis is y-axis.Its position can be determined for each location point in this video pictures.And each car entered within the scope of video tracking, after Continuous Tracking, can be considered as a rectangle frame, x, y value corresponding to the center of rectangle frame can as the foundation determining its position in video pictures.In order to different vehicle be distinguished, one numbering can also be set for each car.Such as, numbering 001,002,003 ...Therefore, in each moment, the particular location of each vehicle of numbering in video pictures can both accurately be learnt.
In video tracking technology, the vehicle location in any two moment can be obtained, then according to the mistiming between two moment, car speed can be obtained immediately.Certainly the velocity information utilizing video tracking detection technique to obtain vehicle is also ripe means of the prior art, no longer describes in detail at this.
The first moment in the present embodiment and the mistiming between the second moment can set flexibly according to actual road conditions.Mistiming is shorter, and the result obtained is sensitiveer, and the mistiming that such as can set between two moment is 1s, 2s etc., also can be set to 1 minute.In addition, in the present embodiment, said first moment and the second moment are the concepts of a relative time.Such as, with the mistiming of 2 seconds for benchmark, so in vehicle continuous print process, just obtain the speed of a vehicle every two seconds, then the initial time of each time period was exactly the first moment, and the end time of each time period was for the second moment.
Ultimate principle in technique scheme is:
If the travel speed of vehicle at short notice just from fast to slow, i.e. Reduced Speed Now, and the speed reduced has exceeded again velocity contrast threshold value, then can think and necessarily occur that in this region some unexpected time causes vehicle speed retarding, therefore can think there occurs to block up.
And if the speed of vehicle all the time all lower than threshold speed, then can illustrate there occurs and block up in certain time.
As long as judging there occurs blocks up, then the image obtaining congestion regions is sent to car-mounted terminal.
Preferably, further, as shown in Figure 4, also comprise:
Vehicle-state judging unit, for judging whether the vehicle within the scope of video tracking is halted state;
Exception parking judging unit, judges during for judging have vehicle to be halted state at described vehicle-state judging unit whether the vehicle of the vehicle heading dead ahead next-door neighbour being in halted state is halted state;
Exception parking alarm unit, the vehicle for being close in the vehicle heading dead ahead being in halted state for during halted state, exception parking area image is not sent to car-mounted terminal.
Adopt video tracking technology, when the position of a certain vehicle does not all change in two continuous frames or several frame data, then can assert that this vehicle is in halted state.Utilize Continuous Tracking technology, real-time monitoring the vehicle entered within the scope of video tracking is normally travel or be in halted state.When vehicle is in halted state, judge whether the vehicle of right ahead is in halted state immediately, if the vehicle of the dead ahead next-door neighbour of vehicle does not have halted state, then illustrate that this vehicle is exception parking, obtain exception parking area image and be sent to car-mounted terminal.
Preferably, in described exception parking judging unit, the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.Described distance threshold can be 1 meter, 3 meters, 5 meters, 10 meters, 20 meters etc.
Further, in described exception parking alarm unit, setting is not halted state when stop vehicle dead ahead is close to vehicle, and when the time that this vehicle stops exceedes judgment threshold T, exception parking area image is sent to car-mounted terminal.Described judgment threshold T was more than or equal to for 3 seconds, can select 5 seconds, 10 seconds.Situation vehicle can being avoided once stopping to be judged as exception parking by arranging judgment threshold occurs, further increases the accuracy of system.Therefore, if T was 5 seconds, when runway there being exception parking, then image can be sent to car-mounted terminal by system within 5 seconds, highly shortened the time noting abnormalities and stop, improve quick-reaction capability (QRC) and road efficiency.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Claims (8)
1. a congestion in road reason real-time release method, is characterized in that, comprise the steps:
S1: Continuous Tracking is carried out to each vehicle entered within the scope of video tracking;
A: judge whether the vehicle within the scope of video tracking is halted state, then enters step S2 if not, is, enter step B;
B: whether the vehicle that the vehicle heading dead ahead judging to be in halted state is close to is halted state, if then return step S1, otherwise enters step C;
C: obtain exception parking area image and be sent to car-mounted terminal;
S2: obtain each car respectively in the First Speed in the first moment and the second speed in the second moment;
S3: judge that whether described First Speed is equal with described second speed, if then enter step S4, otherwise enter step S5;
S4: judge whether the difference of described First Speed and described second speed is more than or equal to velocity contrast threshold value, if then enter step S6, otherwise returns step S1;
S5: judge whether described First Speed and described second speed are all less than or equal to threshold speed, if then enter step S6, otherwise return step S1;
S6: determine to occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image reason of blocking up.
2. congestion in road reason real-time release method according to claim 1, is characterized in that, in described step B: the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.
3. congestion in road reason real-time release method according to claim 1 and 2, it is characterized in that, in described step C, when stop vehicle dead ahead is without next-door neighbour's stop vehicle, and the time that this stop vehicle stops is when exceeding again judgment threshold T, obtains exception parking area image and be sent to car-mounted terminal.
4. congestion in road reason real-time release method according to claim 3, is characterized in that: described judgment threshold T was more than or equal to for 3 seconds.
5. a congestion in road reason real-time publishing system, is characterized in that, comprising:
Car-mounted terminal, is arranged to need to issue and blocks up on the vehicle of reason;
Video monitor unit, carries out Continuous Tracking to each vehicle entered within the scope of video tracking;
Speed acquiring unit, obtains each car within the scope of video tracking in the First Speed in the first moment and the second speed in the second moment;
First judging unit, judges that whether described First Speed is equal with described second speed;
Second judging unit, when described First Speed and described second speed unequal time, judge whether the difference of described First Speed and described second speed is more than or equal to velocity contrast threshold value;
3rd judging unit, when described First Speed is equal with described second speed, judges whether described First Speed and described second speed are all less than or equal to threshold speed;
Congestion information transmission unit, the difference of described First Speed and described second speed be more than or equal to described velocity contrast threshold value or described First Speed and described second speed be all less than or equal to described threshold speed time, determine to occur blocking up, obtain congestion regions image and be sent to car-mounted terminal, described car-mounted terminal obtains according to image reason of blocking up;
Also comprise:
Vehicle-state judging unit, for judging whether the vehicle within the scope of video tracking is halted state;
Exception parking judging unit, at described vehicle-state judging unit, when judging have vehicle to be halted state, judges that the vehicle heading dead ahead being in halted state is halted state with or without the vehicle be close to;
Exception parking alarm unit, during for stop vehicle in the vehicle heading dead ahead being in halted state without next-door neighbour, is sent to car-mounted terminal by exception parking area image.
6. congestion in road reason real-time publishing system according to claim 5, is characterized in that, in described exception parking judging unit, the distance between stop vehicle dead ahead next-door neighbour's vehicle and stop vehicle is no more than distance threshold L rice, wherein L≤20.
7. congestion in road reason real-time publishing system according to claim 5 or 6, it is characterized in that, in described exception parking alarm unit, setting is when stop vehicle dead ahead is without next-door neighbour's stop vehicle, and the time that this stop vehicle stops is when exceeding judgment threshold T, exception parking area image is sent to car-mounted terminal.
8. congestion in road reason real-time publishing system according to claim 7, is characterized in that, in described exception parking alarm unit, set described judgment threshold T and be more than or equal to for 3 seconds.
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| CN201410155570.8A CN103903465B (en) | 2014-04-17 | 2014-04-17 | A kind of congestion in road reason real-time release method and system |
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