下载后可任意编辑基于 PLC 的煤矿瓦斯浓度监控系统摘 要煤矿矿井通风系统能否正常工作与矿井内工作环境条件，生产效率，安全生产密切相关。随着我国政府对各行各业安全生产监管力度的不断加大，尤其对煤矿生产的安全要求越来越高，对煤矿矿井通风系统进行技术改造，提高其运行稳定性，可靠性，节能性等势在必行。本系统将三菱 PLC 与变频器结合起来，采纳瓦斯浓度和井下压力为主要参数，实现对矿井通风机的工作过程和运转速度的有效控制，从而达到矿井下通风安全 、稳定，同时使得资源最大的利用。并且 PLC 对通风机有过热保护、故障报警、机械故障和瓦斯高浓度报警等功能。为了矿井通风的安全节能技术改造提供新的技术。关键词：PLC, 瓦斯浓度, 传感器，通风机I下载后可任意编辑Coal-mine Gas Concentration Monitoring System based on PLCABSTRACTThe working conditions, the normal work of mine ventilation system and whether the coal mine production efficiency, safety production is closely related to. Along with the Chinese government on all kinds of production safety supervision increased, especially for coal mine production safety requirements more and more high, the technical reformation of coal mine ventilation system, improve the operation stability, reliability, energy saving and so be imperative.This system will combine with Mitsubishi PLC inverter, the concentration of gas and down hole pressure as the major parameter, achieve effective control of working process and the running speed of the mine ventilator, so as to achieve the mine ventilation and safety, stability, and makes use of the most resources. And PLC overheating protection, fault alarm, fault and high gas concentration alarm function of fan. Provide a new technology for technological transformation of mine ventilation and safety and energy savingKEY WORDS: PLC，Gas，Transducer，ventilateII下载后可任意编辑目 录前 言................................................................................
