Data transmission method of electric vehicle terminal applied to remote monitoring

Abstract

The invention discloses an electric vehicle-mounted terminal data transmission method applied to remote monitoring. Two kinds of communication protocols exist in a remote monitoring application of a vehicle-mounted terminal; a CAN (Controller Area Network) bus communication protocol defined by a vehicle manufacturer is followed between the vehicle-mounted terminal and a vehicle; a platform protocol is followed between the vehicle-mounted terminal and a monitoring platform; and a format of CAN bus data and a storage format of the CAN bus data in the platform protocol are redefined, so that the vehicle-mounted terminal can adapt to a new vehicle bus protocol, and a uniform protocol specification is kept between the vehicle-mounted terminal and the monitoring platform. Through adoption of the method, a vehicle-mounted terminal firmware and a monitoring platform service program do not need to be modified, the data format of the vehicle-mounted terminal is standardized, and a formatted data structure is transmitted to the terminal in order to adapt to the new bus protocol, so that the system adaptability is enhanced, and the system maintenance burden is lowered.

Description

technical field [0001] The invention relates to the field of information processing, in particular to an electric vehicle terminal data transmission method applied to remote monitoring. Background technique [0002] With the development of 3G / GPRS technology in the field of mobile communication, the wireless transmission of data is more convenient and faster. By installing the vehicle-mounted terminal on the electric vehicle, the safety monitoring of the electric vehicle can be realized remotely, the monitoring of the working state of the power battery and the running state of the vehicle can be strengthened, and it is convenient to establish an accident warning information system. This monitoring method has been increasingly popular. Multiple applications. [0003] The vehicle-mounted terminal is connected to the vehicle body CAN bus through the vehicle OBD interface, collects driving data in real time, and transmits it to the monitoring platform through the wireless netwo...

AI Technical Summary

Problems solved by technology

[0011] The disadvantage of the two technical methods is: whenever the bus protocol is updated, the firmware program of the vehicle terminal or the service program of the monitoring platform must be changed to adapt to the data format of the new protocol

The application of vehicle-mounted terminals to models of different manufacturers is just a normal product demand. Frequent changes not only increase the workload, but also cause difficulties for version management. At the same time, program changes often introduce new risks and bring hidden dangers to the stable operation of the system.

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