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Method and system for lane vehicle speed detection and data fusion

A technology of data fusion and vehicle speed detection, which is applied in the traffic control system of road vehicles, traffic control systems, devices using electric/magnetic methods, etc., and can solve the problem of inaccurate detection of vehicle speed in the detection lane

Active Publication Date: 2014-04-16
SHENZHEN GENVICT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a lane speed detection and data fusion method and system to overcome the problem of inaccurate lane speed detection in the prior art

Method used

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  • Method and system for lane vehicle speed detection and data fusion
  • Method and system for lane vehicle speed detection and data fusion
  • Method and system for lane vehicle speed detection and data fusion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0105] The coordinates and occurrence time of an OBU transaction data frame are shown in the following table

[0106]

[0107] The following last vehicle speed and last vehicle arrival time are all recorded by actual data, and its task is to preset data. This case is an example. The speed of the previous vehicle was 29.9 kilometers / hour = 8.3 meters / second, and the time interval from the vehicle was 26 minutes, 09.625-25 minutes, and 34.515 = 35.110 seconds.

[0108] The average vehicle speed in the last 300 seconds was 20 kilometers / hour = 5.6 meters / second.

[0109] The vehicle speeds obtained from B2 to B5 are: 0.13 / 31=4.19m / s, 0.5 / 109=4.59m / s, 1.2 / 203=5.91m / s, 1.07 / 172=6.22m / s, 0.7 / 94=7.45m / Sec, 0.37 / 78=4.73m / sec

[0110] Then the speed group is {4.19, 4.59, 5.91, 6.22, 7.45, 4.73, 8.3, 5.6}

[0111] The speed group after the supplement is {4.19, 4.19, 4.59, 5.91, 6.22, 7.45, 4.73, 8.30, 5.60, 5.60}

[0112] Median filtering:

[0113] The first group {4.19, 4.19, 4.59}, the median ...

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Abstract

The invention discloses a method and system for lane vehicle speed detection and data fusion based on an electronic toll collection system and an active positioning system. According to the method and system, the active positioning technology is utilized for obtaining true real-time position information of vehicles in electronic tags and position interval time so that the vehicle speed can be calculated more accurately; besides, data fusion is conducted on various obtained vehicle speeds, multiple calculated vehicle speeds can be fused and processed, so that calculation accuracy is improved, a wrong vehicle speed is removed, and the lane vehicle speed is detected accurately. For a new electronic toll collection system lane, a ground sensing coil, a video camera and other additional facilities are not needed, the vehicle speed can be measured highly accurately as long as a road side unit of the electronic toll collection system is arranged, and therefore the construction quantity and equipment cost are reduced.

Description

Technical field [0001] The invention relates to the technical field of vehicle speed measurement, and more specifically, to a method and system for lane vehicle speed detection and data fusion. Background technique [0002] Currently, vehicle speed is an important parameter in the process of driving on the road. At present, common vehicle speed detection methods include video image detection method and ground induction coil detection method. The video image detection method needs to detect the moving target first, and track the trajectory of the moving target to detect the speed of the vehicle. For small vehicles, it is often blocked by other large vehicles. When the distance between the vehicles is close, the vehicles cannot be distinguished. In addition, the performance of the detection method is still limited. Based on the weather and environment; the ground-sensing coil detection method is to monitor the distance and time of the vehicle passing the ground-sensing coil to cal...

Claims

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Application Information

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IPC IPC(8): G08G1/052G01P3/66G01P3/58
Inventor 杨耿杨成
Owner SHENZHEN GENVICT TECH
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