System and method for calculating and releasing travel time accurate to second
A travel time, accurate technology, applied in traffic flow detection and other directions, can solve the problem of low accuracy of travel time publishing systems and methods
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Embodiment 1
[0041] This embodiment provides a system that calculates and releases travel time accurate to the second, such as figure 1 As shown, it includes a central data processing unit 1, several video tracking units 2 and information publishing units 3; Each lane in the range includes at least two reference points or lines representing the vehicle entering the tracking range and leaving the tracking range, and the video tracking unit 2 continuously tracks each vehicle entering its video tracking range, and the corresponding Two adjacent video tracking ranges have an overlapping area, and each lane in the overlapping area contains a reference point or reference line; for roads with two or more lanes, the video tracking unit 2 judges the Whether there is a vehicle in each lane.
[0042] Each of the video tracking units 2 includes a travel time acquisition module 21 and a data comparison and refresh module 22 . The travel time acquisition module 21 is used to obtain the travel time t o...
Embodiment 2
[0052] This embodiment provides a method for calculating and publishing travel time accurate to the second, including the following steps:
[0053] S1: Set multiple video tracking ranges on the road where the travel time needs to be released. Each lane in each video tracking range contains two reference points or reference lines indicating that the vehicle enters the tracking range and leaves the tracking range. Two adjacent videos The tracking range has an overlapping area, and each lane in the overlapping area contains a reference point or a reference line;
[0054] S2: Each video tracking range is preset with its corresponding travel time T L at the initial T L = T x , where T x The minimum travel time is the time required for the vehicle to quickly drive through the video tracking range at the speed specified by the speed limit;
[0055] S3: For each video tracking range, continuously track each vehicle entering it, and obtain the first reference point or reference lin...
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