The invention discloses a vehicle remote
data acquisition system based on a CAN (Controller
Area Network)
bus, comprising a remote
server and at least one vehicle-mounted remote
data acquisition device, wherein each vehicle-mounted remote
data acquisition device comprises a processor module, a
CAN bus communication module, a
voltage comparison module and a radio communication module; input signals of the
voltage comparison modules are switching value signals and pulse value signals which are output by vehicle equipment; analog value signals output by the vehicle equipment are processed by an engine ECU (
Electronic Control Unit), then transmitted to the
CAN bus and received by the
CAN bus communication modules; the CAN
bus communication module are also used for receiving equipment signals hung on the CAN
bus, and the output ends of the CAN bus communication modules are connected with the processor modules through an SPI (Serial
Peripheral Interface) bus; and the radio communication modules are used for carrying out radio communication with the
server. The
system can acquire various information of the vehicle equipment on a plurality of vehicles, data is transmitted to the
server for storing through radio communication, and reliable references are provided for the maintenance and the management of the vehicles according to acquired data.