Abstract：Speed meter and speed sensor of electric bus are important measuring instruments of rail transit, and their measuring performance is directly related to the safety of operation. The comprehensive calibration device of electric bus speedometer and speed sensor is mainly composed of standard speed module, signal generating module and control unit. The standard speed module can provide the standard speed with the maximum allowable error of 1RPM to calibrate the speed sensor of the electric bus. The signal generation module can directly simulate the output signals of various speed sensors to calibrate the speedometer of the electric bus. The device can also calibrate the speed measuring system of the electric bus (speedometer + speed sensor) as a whole. Thus to ensure the electric bus speed measurement is accurate.
2023, Vol. 33 