PDF《矿井通风自动控制系统研究与开发》

2011,

47 (18)

1 前言 矿井通风实验通常在实际矿井或采用挖掘大面积地下巷 道或者地面垒砌巷道构建通风网络, 多人协作完成压力、 风量 的测实, 手工完成数据的处理分析.

但巷道建设, 维护成本高、 周期长, 占地面积大不利于广泛推广.实验参与人员多、 组织 难度大, 更不利于演示.由于仪器精度等诸多原因, 往往达不 到预期的实验效果. 基于以上的考虑, 辽宁省煤矿安全工程重点实验室开发 了矿井通风自动控制系统, 如图1所示.通风动力采用小型离 心式风机, 根据相似原理, 使用PVC管按照一定比例搭建小体 积通风网络模型.利用计算机控制技术实现了通风参数的信 号采集以及可控风门的自动控制等功能.

2 系统总体设计 系统的总体设计如图2所示, 在模型的各指定位置分别布 置压力传感器、 风速传感器和风门执行器.数据采集使用数 字加模拟混合传输方式, 传感器输出采用0~10 V模拟信号, 由 矿井通风自动控制系统研究与开发 马恒1,

2 , 赵丹1,

2 , 刘剑1,

2 MA Heng1,

2 , ZHAO Dan1,

2 , LIU Jian1,

2 1.辽宁工程技术大学 安全科学与工程学院, 辽宁 阜新

123000 2.辽宁省煤矿安全工程重点实验室 辽宁 阜新

123000 1.College of Safety Science and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China 2.Liaoning Coal Mine Safety Engineering Key Laboratory, Fuxin, Liaoning 123000, China MA Heng, ZHAO Dan, LIU Jian.Research and development of mine ventilation automatic control system.Computer En- gineering and Applications, 2011,

47 (18) : 241-244. Abstract:Based on monitoring and control theory, the mine ventilation control system is developed by building a small vol- ume of the mine model with PVC pipe.This system avoids a large area of underground tunnel excavating needed in ventila- tion experiments and makes significant cost savings.At first, it places the pressure sensors, wind speed sensors and throttle ac- tuator at suitable locations in the model, then achieves the ventilation parameters of signal acquisition, as well as automatic control of throttle control and other functions through the computer control technology.After model debugging is finished, the mine ventilation resistance testing laboratories, the network solver verification experiment, ventilation network regulation experi- ments, as well as the diagonal structure analysis experiments have been completed step by step.The experiments of gathering analog signal of pressure and wind speed as well as outputting angle control signal of throttle have achieved good results, which is under the control of software with Visual Basic program language and transmit orders through CAN-BUS bus.The completion of the system is of great importance for the simulation experiment and intelligent diagnosis of mine ventilation. Key words:automatic control in mine ventilation;

system development;

monitoring and control;

simulation experiment;

diago- nal structure analysis 摘要: 使用PVC管搭建小体积矿井模型, 根据监测监控理论, 开发了矿井通风自动控制系统.解决了通风实验需要挖掘大面积地 下巷道这一工程, 大大节省了成本.将压差传感器和风速传感器以及风门执行器布置于模型适当位置, 利用计算机控制技术实现 了通风参数的信号采集以及可控风门的自动控制等功能.模型调试完成后, 完成了矿井通风阻力测试、 网络解算验证、 通风网络调 节以及角联结构分析等实验.采用Visual Basic编写的上位机软件, 通过CAN-BUS总线采集压差和风速的模拟信号并输出风门角 度控制模拟信号, 实验取得了良好的效果.该系统的完成对于模拟实验以及矿井通风智能诊断研究具有极其重要的意义. 关键词: 矿井通风自动控制;