基于CAN总线网络的蓄电池参数巡检系统设计

Design of CAN-based itinerant monitoring system for lots of batterys' working parameter

针对大量蓄电池参数的实时检测要求,对基于控制器局域网(CAN)总线的蓄电池巡检系统(IMS)进行了深入研究,选用集成CAN控制器的PIC18F458作为数据采集模块的MCU进行电路设计,对系统核心电路和电压、电流及电解液液位信号采集处理电路及程序设计问题进行了全面论述,根据使用要求优化了上位主机和CAN通讯卡的选型和系统集成,完成了巡检系统样机设计和功能调试。试验过程中构建了双通道5节点网络。样机试验和测试结果表明,所提出的设计思路和方法可行,易于扩展,调试维护简单,并具有良好的工程适用性。

Aiming at realtime monitoring lots of batterys＇ working parameter,the controller area network（CAN） based itinerant monitoring system（IMS） was studied and developped.According to the industrial single chip status quo,the IC of PIC18F458 embedded with CAN controller,was selected as MCU of basic circuit.And then,the corresponding physical signal processing circuit and the program＇s design method were fully presented,the central computer and CAN adapter were integrated into the IMS.As a sample,a kind of IMS with double CAN channel of five nodes was completed.The experiment and application results indicate that the technique and method are effective and attractive,at the same time it is easy to extend and maintain,and it is suitable for engineering application.