Design Of Remote Collection And Monitoring System For Vehicle-borne Information Of Pure Electric Vehicle

Under the background of"Made in China 2025"strategy,intelligent manufacturing is quietly changing all walks of life.Chinese automotive enterprises have realized the transformation of automotive industry in the big environment under the innovation of intelligent technology and the transformation of industrial chain.At the same time,with the increasing shortage of petroleum resources and the energy crisis and environmental problems caused by the massive emissions of greenhouse gases such as CO₂,the theme of energy saving and emission reduction has attracted worldwide attention.Based on the concepts of"intelligent manufacturing"and"energy saving and emission reduction",car networking and intelligent new energy vehicles will be the future direction of development in the automotive field.Data acquisition and monitoring system,as an important part of the vehicle network,an improved basis for the assessment and evaluation of each electronic control unit of electric vehicle in the design and development stage,provides data support for improving the control strategy of electric vehicle,and lays a solid foundation for the promotion of intelligent vehicle and unmanned driving in the future.Therefore,this paper designs a remote collection and monitoring system for on-board information of pure electric vehicle based on DSP2407core processor and virtual instrument LabVIEW.Firstly,the acquisition parameters are determined according to the performance evaluation index of electric vehicle.At the same time,the overall design scheme of the system is made by combining CAN bus technology,GRPS wireless communication technology and LabVIEW data storage technology.The system is divided into the design of remote data acquisition and transmission system and the design of local monitoring system.Secondly,according to the hardware design criteria of data acquisition and transmission system,the core processor of the hardware system is TMS320LF2407 DSP chip.The CAN communication auxiliary modules such as DSP2407CAN controller,PCA82C250CAN transceiver and DL6500GPRS module are selected.According to the hardware circuit diagram of the data acquisition system,the integrated circuit board is made and the hardware design of the system is completed.The CAN communication program is compiled and debugged by assembly language in CCS development environment.The communication parameters are set by DL6500 setting and testing software.The remote collection and transmission of vehicle information?vehicle speed,vehicle start-stop status,motor speed and torque,battery voltage and current,battery SOC value?are completed.Thirdly,we design the local data monitoring system with modular thinking.Through the graphical programming language LabVIEW,and using the network TCP/IP protocol and the vehicle terminal data acquisition and transmission system to establish long-distance communication,combined with the visual human-computer interaction interface,real-time display of the vehicle information change curve and specific data,while data storage and playback module provides a guarantee for the subsequent data analysis.Finally,after completing the integrated debugging of the built remote collection and monitoring system of vehicle-borne information,the actual vehicle tests under different vehicle types and different road conditions are carried out.The results show that the system works stably,the acquisition and transmission speed is fast,the monitoring interface is easy to operate,the display is intuitive,the data can be accurately received,and the expected design goals are achieved.