基于CAN总线的分布式水文参数实时监测系统  

Real-Time Distributed Surveying System Based on CAN Bus for Hydrological Parameters

作　　者：陈进[1] 程楠[1] 崔晶晶[2] 赵京[3] 

机构地区：[1]武汉理工大学自动化学院,湖北武汉430070 [2]空军雷达学院电工教研室,湖北武汉430019 [3]武汉理工大学华夏学院,湖北武汉430223

出　　处：《自动化仪表》2008年第8期44-46,共3页Process Automation Instrumentation

摘　　要：研制了基于CAN总线的分布式参数实时监测系统,实现了由多个CAN节点与PC机组成的水文参数监测网。系统通过改变通信速率及帧格式来提高网络数据传输的实时性,从而以较高的数据采集速度和通信速率采集连网监测站水文参数。系统具有采集速度快、通信速率高、采集信息量大等特点。实验结果表明,在300 kbps的通信速率下,每10帧标准帧的传输时间可达1.63 ms,满足了水文实时监测要求。The distributed real-time surveying system based on CAN bus is researched and developed. The surveying network for hydrological parameters is realized by composing multiple CAN nodes and PC. The real-time performance of data transmission of the network is enhanced by changing communication rate and the formats of the frames, thus the hydrological parameters from the networking surveying stations can be collected in higher speed and transmitted in higher communication rate. The system features high sampling and transmission rate, as well as plentiful in formation. The results of experiments indicate that under communication rate of 300 kbps, the transmission period is up to 1.63 ms with every 10 standard frames; this meets the requirement of real-time hydrological survey.

关 键 词：水文参数 监测系统 CAN总线 分布式 实时 通信协议 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]