The invention relates to a calibrating
system and method applied to a vehicle monitoring terminal. The calibrating
system comprises an OBD vehicle-mounted terminal and a background
server. The OBD vehicle-mounted terminal comprises a host module, a multi-sensor module, a
wireless communication module and a vehicle
speed measurement interface module. The
wireless communication module is used for conducting
wireless data communication with the background
server, the multi-sensor module is used for measuring and obtaining G-sensor tri-axial acceleration speed information, tri-axial angular speed information, geomagnetic information, pressure information and temperature information of a vehicle, the vehicle
speed measurement module is used for measuring and obtaining driving speed information of the vehicle and the host module is used for packaging the data and transmitting the data to the background
server. The background server is used for calculating the received calibration parameter information, and
calibration result information obtained after
processing is transmitted to the OBD vehicle-mounted terminal. The calibrating
system and method obviously improve the calibration precision and efficiency of the vehicle monitoring terminal and have the advantages of being good in user experience and the like.