面向选煤厂的全数字化安全监控系统设计

Design of all-digital safety monitoring system for coal preparation plant

目前面向国内选煤厂的安全监控系统已经历3代发展,现阶段是以单总线与RS485轮询的监控方式为主,普遍存在通信实时性差,可靠性不高、易受电磁干扰等问题。针对上述问题,将工业以太环网与控制器局域网总线(CAN总线)进行双重冗余结合,以数字分站作为整个系统的核心,通过运用嵌入式操作系统uC/OS-Ⅱ与ARM处理器LPC2119,分别从硬件设计、本安型数字分站的嵌入式程序设计、上位机监控软件以及手机APP的开发设计4个方面研究设计了面向选煤厂的新一代全数字化安全监控系统。通过基于实验室搭建的模拟测试系统开展相关技术的测试,测试结果表明本系统的实时性与可靠性强、智能化程度高、经济性表现优异的特点,可大幅提高现有选煤厂安全监控系统整体性能,有利地保障了选煤厂安全生产。

At present,the safety monitoring system for domestic coal preparation plants has undergone three generations of development.At this stage,the safety monitoring system of coal preparation plants is mainly based on the single bus and RS485 polling method,and there are generally poor real-time communication,low reliability,and easy to be affected.electromagnetic interference,etc.In order to solve the above problems,the dual redundant structure based on the controller area network bus(CAN bus)and the industrial Ethernet ring network is adopted,the digital substation is used as the core of the whole system,and the ARM processor LPC2119 and the embedded operating system uC/OS-Ⅱare used,respectively from the hardware design,the embedded program design of intrinsically safe digital substations,the development and design of the host computer monitoring software and the mobile APP,and designed a new generation of fully digital safety monitoring system for coal preparation plants.Through the test of related technologies based on the simulation test system built in the laboratory,the test results show that the system has the characteristics of strong real-time and reliability,high degree of intelligence and excellent economic performance,which can greatly improve the safety monitoring of existing coal preparation plants.The overall performance of the system advantageously guarantees the safe production of the coal preparation plant.