Audio detecting system of moving vehicle and detecting method thereof

Abstract

The invention provides an audio detecting system of a moving vehicle. The system comprises a plurality of MEMS microphone modules which are in an array and are used for acquiring a tire sound signal of the moving vehicle and converting the acquired sound signal to a digital signal. The plurality of MEMS microphone modules are connected with a signal processing unit. The signal processing unit receives the digital signal of the plurality of MEMS microphone modules, and processes the digital signal for calculating the positioning information of the vehicle, wherein the signal processing unit executes the following instructions for calculating the positioning information of the vehicle: the signal processing unit is connected with a communication module; the calculated vehicle positioning information is output through the communication module. The audio detecting system of the moving vehicle realizes high convenience in mounting and maintenance and can effectively reduce influence of an environment factor in a vehicle positioning process.

Description

technical field [0001] The invention relates to the technical field of positioning detection, in particular to a moving vehicle audio detection system and detection method. Background technique [0002] With the rapid development of highway construction, highway traffic has become an indispensable link for economic development. With the rapid development of computer and information technology, traffic control is also developing in the direction of intelligence and informationization. In the application of intelligent transportation, the most basic part is the real-time collection of vehicle information, and the key to this part is the vehicle detection technology. As one of the key technologies of intelligent transportation, vehicle detection technology plays an important role in traffic guidance, traffic signal control, expressway management, electronic toll collection and other fields. The development of transportation requires a large number of vehicle detectors to be i...

AI Technical Summary

Problems solved by technology

In nighttime, dense fog and other weather conditions, the recognition accuracy of the camera detection method drops significantly

[0007] (3) Other detection methods such as ultrasonic detection method, infrared detection method, etc. have different degrees of application in vehicle detection. Although these methods are quite mature, because these methods are not destructive to the road section, the maintenance requirements for equipment are high. , it is not suitable for laying a large number of roads along the road

[0008] In the existing methods, the installation and maintenance of the ground sense coil needs to cut the road surface; the camera-based solution is expensive, needs to be installed at the aiming point, and the recognition effect is low at night, in foggy and rainy days; the detection accuracy of the method based on ultrasonic and infrared rays is not good High, short detection distance, easily affected by environmental factors such as rain and snow

[0009] Therefore, in order to solve the problems of difficult installation and maintenance and being easily affected by environmental factors in the existing vehicle detection technology, a moving vehicle audio detection system and detection method are needed

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