A Saturated Headway Detection Method Based on Radar Data

Abstract

The present invention relates to the application of a radar detection technology, specifically a radar data-based saturated headway detection method; which includes the following steps: Step 5: Establish a radar traffic big data platform, and conduct a radar inspection on the radar connected to the radar host computer Collection, parsing, data storage and analysis of configuration information and passing data; Step 6: Query all passing data in the lane: According to the release time of the lane obtained in the above steps, query all passing data of the lane within the release time period, select The time period when the amount of all passing data is greater than M; Step 7: Obtain the saturated headway within the lane passing time: starting from the Nth passing data in the positive order of the time of driving out of the coil, the time for driving the rear car out of the coil Subtract the time of the vehicle in front leaving the coil to obtain the headway of the Nth car starting from the lane release, remove the headway greater than Q seconds, and take the minimum value of the remaining headway, which is this section of the lane Saturated headway during transit time.

Description

technical field [0001] The invention relates to the application of radar detection technology, in particular to a saturated headway detection method based on radar data. Background technique [0002] Intersections are flow conversion nodes of urban roads and play a vital role in the connection of road network systems. The ability of intersections to guide traffic flow largely determines or restricts the overall operation of urban road networks. Adding signal management facilities to urban road intersections can adjust the traffic flow at the intersections in time and space, but unreasonable signal management may also cause a high incidence of traffic congestion. How to reduce vehicle delays at signalized intersections and improve intersection capacity is the goal pursued by urban road traffic research and management. The headway time refers to the time interval between the front ends of two consecutive vehicles passing through a certain section in the vehicle queue driving ...

AI Technical Summary

Problems solved by technology

[0005] However, manual calculation is time-consuming and labor-intensive and the accuracy is low. A loop coil vehicle detector can only detect one lane, and it needs to be buried below the ground during installation. The construction is difficult, which will cause damage to the road surface and cause failure of a certain lane. use, the service life of the road will also be reduced

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