Sound signal vehicle type identification system combined with oscillation mark line

Abstract

The invention relates to the field of intelligent traffic management and particularly discloses a sound signal vehicle type identification system combined with an oscillation mark line. According to the sound signal vehicle type identification system combined with the oscillation mark line, a sound signal collecting module collects the sound signals generated when a vehicle passes by the oscillation mark line, and converts the sound signals which are analog signals into digital signals; a sound signal processing module judges whether the vehicle passing by the oscillation mark line exists or not, when the vehicle passes by the oscillation mark line, feature data of the current sound signal are extracted; a vehicle type identification module conducts vehicle type identification and classification based on the feature data; the oscillation mark line comprises N protrusion particle bands, wherein N is a positive integer which is larger than or equal to 2; protrusion particles of the ith protrusion particle band and protrusion particles of the i+1th protrusion particle band are arranged in a staggered mode, wherein i is a positive integer which is smaller than or equal to N-1. Oscillation mark lines are arranged on a highway and urban roads. Noise generated when the vehicles pass by the oscillation mark lines are collected, processed and analyzed, arrival of the vehicles is effectively judged, abundant feature information is provided for sound signal vehicle type identification, and the identification precision is improved.

Description

[0001] technical field [0002] The invention relates to the field of intelligent traffic management, in particular to an audio signal vehicle identification system combined with oscillating marking lines. Background technique [0003] The acquisition of road traffic flow information is an important content in the field of intelligent transportation, which can provide basic data for traffic management and control. Especially at the intersection of highway toll plazas and urban roads, relevant monitoring facilities are usually set up for real-time monitoring and acquisition of traffic flow information. In traffic flow information, vehicle type is one of the important parameters. The existing vehicle identification technology mainly uses video technology, but the use of video technology has disadvantages such as high equipment and maintenance costs, and serious influence by light, which provides a demand for the research and design of vehicle identification methods with lo...

AI Technical Summary

Problems solved by technology

When the vehicle passes the oscillating marking line, it will produce strong vibration and noise, which will bring psychological and physical discomfort to the driver, thus forcing the driver to reduce the speed of the vehicle.

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