分布式矿井粉尘浓度在线监控系统

Distributed Mine Dust Concentration On-line Monitoring System

为解决矿井中粉尘浓度测量精度低和在线监测难的问题,利用电荷感应原理设计了高精度矿井粉尘浓度传感器,使输出的感应电流与粉尘浓度之间建立了良好的线性关系;采用三级管理结构设计了分布式矿井粉尘浓度在线监控系统,系统主要由粉尘监测节点、风机控制器、数据汇聚基站、监控中心和传输网络组成;粉尘监测节点与数据汇聚基站通过ZigBee网络组成星型结构,定时采集周围环境中的粉尘浓度信息,并发送给数据汇聚基站;数据汇聚基站与监控中心采用C/S架构设计,将接收到的各监测节点数据打包后,通过局域网实时发送到监控中心的服务器上;监控中心接收、处理、分析和显示从各终端发来的数据,并将存入数据库ACCESS2003中;当某区域出现粉尘浓度过高时,会自动发出报警信号,并控制对应的风机加大排风量,使粉尘浓度保持在安全范围;通过测试实验结果表明,设计的粉尘浓度传感器具有较高的测量精度,平均误差仅为2.95%,且粉尘浓度在线监控系统工作稳定可靠。

：To solve the problem of low measurement accuracy and on-line monitoring for the mine dust concentration, the high-precei sion mine dust concentration is designed with the charge induction principle, whose output induced current has a good linear relationship with the dust concentration. The distributed mine dust concentration on-line monitoring system composed of dust monitoring nodes, fan control ler, data station, monitoring centre and transport network is designed using three levels management structure. The dust monitoring nodes make up a star structure with the data station via ZigBee network, and collect the dust concentration in the surrounding environment, sending them to the data station periodically. The data station connectiong tO the monitoring centre is designed with C/S architecture, receives the data from all the monitoring nodes and send them to the server in the monitoring centre after packing. The monitoring centre receives, processes, analyzes and displays all the data from data station, and at last store them to the Data Base ACCESS2003. It can send out alarming automatically when the high concentration of dust occures in an area, and controls the corresponding fan increase more work so that the dust con centration can be kept in a safty range. The test results show that the designed dust concentration sensor has a high accuracy with the average error of only 2.95 %, and the dust concentration on-line monitoring system works reliable.