The invention relates to a device system for a measurement method of a motor vehicle whistling snapshot system. The device system comprises a motor vehicle whistling snapshot device, a support frame,a standard sound source device, a transmission and control device, a signal collection and analysis system and a computer, wherein the snapshot system is installed on the supporting frame, the supporting frame is erected on the indoor ground, and the whistling snapshot system device is used for collecting audio signals in a monitoring area; the transmission control system is used for being responsible for movement of a sound source and adjusting the position of the sound source in the calibration process. The signal generating, collecting and analyzing system collects and analyzes a horn of anactual motor vehicle through a PULSE system and a microphone of the Danish B & K company, audio signals are generated by controlling the PULSE system, and signals received by the microphone are directly input into the PULSE to be analyzed. Through the system, the indoor work positioning precision, snapshot rate and effective rate of the motor vehicle whistling snapshot system and the main and side lobe suppression ratio can be indirectly calibrated.
本发明涉及一种机动车鸣笛抓拍系统测量方法的装置系统,包括:机动车鸣笛抓拍装置、支撑架、标准声源装置、传动及控制装置、信号采集分析系统与计算机。上述的抓拍系统安装在支撑架上,支撑架立于室内地面上,鸣笛抓拍系统装置用于采集监控区域内的音频信号;传动控制系统用于负责声源的运动,在校准过程中调整声源的位置;信号发生采集分析系统采用丹麦B&K公司的PULSE系统和传声器对实际机动车的喇叭进行了采集分析,通过控制PULSE系统来完成声频信号的产生,传声器接收到的信号直接输入PULSE进行分析。通过这个系统可以间接的对机动车鸣笛抓拍系统室内工作的定位精度、抓拍率与有效率和主旁瓣抑制比进行校准。
Research on key parameter measurement method of motor vehicle whistling snapshot device
一种机动车鸣笛抓拍装置关键参数测量方法研究
2020-08-28
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES , Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen |
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