Cooperative vehicle traffic flow detecting device and detecting method

Abstract

The present invention discloses a cooperative vehicle traffic flow detecting device and detecting method. The detecting method includes the following steps: Step 1, installing a plurality of three-axis geomagnetic sensors in the same transverse section of a road, setting the orientation of each of the three-axis geomagnetic sensors in such manner that: an x-axis is orientated along a driving direction, an y-axis is perpendicular to a direction of the road, a z-axis is orientated upward perpendicular to the ground, and collecting three-axis geomagnetic data resulted from passing vehicles; Step2, individually processing the three-axis geomagnetic data collected by each of the three-axis geomagnetic sensors to extract a waveform at which a single vehicle passes by; Step 3, identifying a vehicle position corresponding to the waveform at which the single vehicle passes by; and Step 4, cooperatively calibrating the results obtained from the plurality of three-axis geomagnetic sensors to obtain the vehicle traffic flow information of each lane. This technical solution can utilize the mutual calibration between adjacent sensors to accurately detect the vehicle traffic flow of a multi-laneroad.

Description

technical field [0001] The invention belongs to the field of traffic information collection, in particular to a device and method for cooperatively detecting traffic flow. Background technique [0002] Traffic flow detection plays an important role in traffic planning, traffic control, and induced travel. Traffic flow detection includes detecting the traffic flow of single lanes and the traffic flow of the entire road section. The devices for detecting traffic flow include embedded detectors and non-embedded detectors. Traditional traffic flow data detection costs are high, power supply cables and communication lines need to be laid, and it is easily affected by the environment, and the detection accuracy is low. [0003] With the development of detection technology, the geomagnetic sensor can be installed on the ground, and the influence of the geomagnetic field when the vehicle passes by the geomagnetic sensor can be used to detect the traffic flow, but how to get the accu...

AI Technical Summary

Problems solved by technology

[0002] Traffic flow detection plays an important role in traffic planning, traffic control, and induced travel. Traffic flow detection includes detecting the traffic flow of single lanes and the traffic flow of the entire road section. The devices for detecting traffic flow include embedded detectors and non-embedded detectors. Traditional traffic flow data detection costs are high, power supply cables and communication lines need to be laid, and it is easily affected by the environment, and the detection accuracy is low

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