电传动装甲车辆冷却系统CAN通信设计  

CAN-Bus Communication Design for Electric-Drive Armored-Vehicle Cooling System

作　　者：王发成[1,2] 王义春[1] 张承宁[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]清华大学汽车工程系,北京100084

出　　处：《数据采集与处理》2010年第6期788-794,共7页Journal of Data Acquisition and Processing

基　　金：总装备部预研(40402070104)资助项目

摘　　要：针对电传动装甲车冷却系统数据采集需求,利用控制器局部网(Controller area network,CAN)总线技术建立了冷却系统数据通信网络。通过RS232接口与上位机相连,在软硬件设计的基础上,计算并分析了通信负载率,分析表明需要将高频信号的采样频率降低。采用等效采样和数值平均相结合的方法对相对高采样率的信号进行二次采样。试验结果表明:统一的低采样率满足冷却系统的数据采集要求;RS232接口完全能够对冷却系统进行实时数据采集;采用等效采样与数值平均相结合的方法,既减少了数据冗余,又增强了采集系统的抗干扰能力。Because of data acquisition demands of the cooling system in an electric-drive armored-vehicle,Controller area network（CAN-bus） is introduced to build a data communication network for the cooling system.Then,through an RS232 interface,the network communicates with the host computer.Based on the design of the software and the hardware,the communication busload is analyzed.And the conclusion is drawn that it is necessary to reduce the sampling rate of the high-frequency signal.Therefore,equivalent sampling and weighted average method is used for the second sampling.Test results show that the same low sampling rate is suited for cooling system data acquisition,and the RS232 interface can be used for real-time and effective data acquisition.The equivalent sampling and weighted average method reduces redundant data,and enhances anti-jamming capacity.

关 键 词：CAN总线 数据通信 冷却系统 等效采样 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]