Advanced TDLS System for CO2 & Blackdamp Detection in Mines - DoP

二氧化碳（CO2）每天在煤矿中通过煤的氧化、人类呼吸、岩石爆破、火灾、腐烂的木材等产生。如果矿井的所有区域都没有足够的通风来稀释多余的二氧化碳，“黑湿”气氛就会在氧气水平耗尽的地方形成，二氧化碳水平可能会增加20%，由于氧气的流失，会造成人类立即窒息的风险。目前的电式气体传感器由于存在火花危险，不能作为固定传感器应用于这种具有潜在爆炸性的矿井气体环境中。在这个原型项目的开发中，OptoSci公司建议使用气体传感器设计和在之前的概念验证项目下设计的新颖信号处理方案，生产实用的、本质安全的、基于激光和光纤的多点二氧化碳检测系统，然后在工作煤矿中对系统的性能进行现场试验。

Carbon Dioxide (CO2) builds up daily in coal mines from oxidation of coal, humanrespiration, rock blasting, fires, rotting timbers, etc. Without adequate air ventilation in allareas of the mine to dilute excess CO2, a ”blackdamp” atmosphere can build up where theoxygen level is depleted and CO2 levels can increase up to 20%, creating an immediatehuman asphyxiant risk due to displacement of oxygen. Current electrical gas sensors cannotbe used as fixed sensors in this potentially explosive mine gas environment because of thespark risk. Under this Development of Prototype project OptoSci proposes to produce apractical, intrinsically safe, laser and fibre optic based multipoint CO2 detection system usingthe gas sensor designs & novel signal processing schemes devised under a previous Proof ofConcept project and then field trial the system's performance in a working coal mine.