基于CAN总线的尾矿库在线监测预警系统

Online Monitoring and Early-warning System of Tailing Reservoir Based on CAN Bus

目前基于RS-485总线的数据通信存在效率低、可靠性低、应用不灵活、后期维护成本高等缺点,难以满足尾矿库工程监测抗干扰性强、多节点、长距离传输的要求。为了解决基于RS-485总线的尾矿库在线监测系统在数据采集传输方面的不足,比较了RS-485总线与CAN总线的基本特性,并提出了在尾矿库工程中采用CAN总线用于监测预警系统与监测设备通信,建立了一种基于CAN总线的尾矿库在线监测预警系统,详述了该监测系统的组成和监测软件的基本功能。在实际尾矿库工程应用中,建立浸润线监测系统,对尾矿坝各横断面内水位进行监测,通过对监测系统的运行情况和各监测点监测数据进行分析,表明基于CAN总线的监测系统设计合理,可以有效地监测尾矿坝地下水位状态,实时可靠,满足恶劣环境下的尾矿库在线监测要求,在尾矿库安全监测中具有一定的推广应用价值。

The existing data communication based on RS-485 bus has shortcomings of low efficiency,low reliability, not flexible in application and higher post-maintenance cost. It is hard to meet the requirements of strong anti-interference, many nodes,long distance transmission in tailings reservoir engineering monitoring. In order to solve the deficiencies of tailing reser- voir online monitoring system based on RS-485 bus in the aspect of data collection and transmission,the basic characteristics of RS-485 bus with CAN bus are contrasted,and the proposal for the CAN bus be used for the early-warning monitoring system communicate with monitoring equipment in the railings reservoir engineering is put forward. Based on this, the tailings reservoir on-line monitoring and early warning systems based on CAN bus is established, and the monitoring system compositions and the basic functions of monitoring software are introduced. In practical engineering application, the saturation line monitoring system is established to monitor water level in each cross section of the tailings reservoir. Through the analysis of the monitoring system operation and the monitoring data of saturation line, it is shown that the system based on CAN bus is reasonable in design, which can effectively monitor the underground water level of tailings reservoir. Its real-time and reliable operation can meet the requirement of on-line monitoring in harsh environment. It has a certain application value in tailings security monitoring.