Development of Verification Device for Interval Velocity Measurement System based on GNSS

Abstract

Abstract: A metrology verification device for dynamic detection of road traffic interval velocity measurement system using GNSS (Global Navigation Satellite System) technology is introduced in this paper. It uses C8051F500 microcontroller as the main control chip, which communicates with GNSS sensor by CAN (Controller Area Network) bus. GNSS sensor data signals processed by the microcontroller, which can acquire real time clock, vehicle running speed and mileage information, and then it is sent to the vehicle plug-screen display or print output. The interval velocity monitoring system is further tested and calibrated. The verification device shows good stability and reliability in the verification experiment, which all the technical performance index meets the requirements of accuracy.