Research And Design Of The Vehicle-mounted Acquisition And The Remote Supervisory System Of Electric Vehicle

With the growing shortage of oil energy and the environmental impact from greenhouse gases emissions such as CO2, the theme of "energy conservation and emission reduction" caused common concern in worldwide. In the automotive field, the new energy vehicles oriented of pure electric vehicles has become the key of research and development in some countries. In the development process of electric vehicles, we essential to understand and analyze the data of the pure electric vehicle operating conditions in order to reduce development costs, optimize performance, promote technology improvement and innovation of the pure electric car. Therefore, the research and development of pure electric cars vehicle-mounted information remote monitoring system has important significance.This paper based on the field of vehicle data collection in present situation or development tendency, combined the technology of CAN network communication, remote wireless data communication of GPRS, and the virtual instrument that widely used in industry. It developed the remote monitoring system of vehicle-mounted information based on ARM9 and LabVIEW. The system mainly consisted of car data terminal hardware system design and remote monitoring software system research.In the hardware system design, It adopts chip ARM9-2440 as the core processor of the data collection and the transmission system, and then, it selects some supplementary components, such as, MCP2510 CAN controller module,82C250 CAN transceiver module and M22 GPRS data wireless transmission module, completing hardware system platform through design the relevant circuit connection diagram. In the research about software programs, we writing and debugging the programs application C language under the ADS development environment through the CAN or GPRS related communication theory and communication protocol. It could complete the function of vehicle-mounted information (such as motor speed, motor temperature, battery remaining capacity, battery voltage, battery current, etc.) acquisition and remote transfer.Remote monitoring software written used the graphical language of LabVIEW. Make it establish remote communication with the hardware system through the network protocol, then, design human-machine interface and realize monitor the operation condition of the electric car, it would not only display vehicle information intuitively, but also has the function of date storage and playback.By the data display contrast, this system operate stable, could accurate receiving vehicle information, display intuitively, storage and playback convenient, achieve the design effect.