Based on Controller Area Network Bus to Construct Monitoring System of Electric Vehicles

• Main Authors: Chia- Hsien Wei, 魏嘉賢
• Other Authors: Shih-Wei Kau
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/41209472500600253612

碩士 === 國立高雄應用科技大學 === 電機工程系 === 99 === The main purpose of this paper is to establish the network monitoring platform of electrical vehicle system. The vehicle platform part mainly adopts the Microchip PIC18f8680 and dsPIC30f4011 microcontrollers to realize different peripheral systems, such as the motor drive, central monitoring, alarm and power management systems. Meanwhile, it integrates various units through the CAN Bus of vehicle network. Besides, it makes use of the vehicle detector to display the important message in the vehicle system on the monitoring interface to make it convenient for the maintenance personnel to carry out detection and maintenance, so as to shorten the maintenance time and improve the working efficiency. Firstly, the motor drive part simulates the SVPWM by the SIMULINK so as to verify its efficiency and insert it into dsPIC30f4011, and it adjusts the control signal output through the electronic accelerator. The central monitoring system mainly retrieves real-time data delivered by the CAN bus and it mainly delivers to the human machine interface through MODBUS to make it easier for the drivers to watch. The power management system part makes use of the battery sampling circuit board and charging and discharging control circuit board it planned by itself for the charging and discharging control, and it take samples of relevant information such as the real-time voltage, current and temperature of battery through the microcontroller so as to monitor the current utilization condition of the battery. 232 communication interfaces connect the vehicle detector and central monitoring system, deliver data to the VB.NET monitoring interface and display the important messages of each unit at real time. Besides, it can also display the current charging and discharging curves of battery and store them into the ACCESS database so as to provide data sources for such analyses on the battery characters and residual power estimation in the future.