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.
出处
《自动化仪表》
CAS
2008年第8期44-46,共3页
Process Automation Instrumentation
关键词
水文参数
监测系统
CAN总线
分布式
实时
通信协议
Hydrological parameters
Surveying system
CAN bus
Distributed
Real-time
Communication protocol
