Advanced TDLS System for CO2 & Blackdamp Detection in Mines

在煤矿中，由于煤炭的氧化、人类的呼吸、岩石爆破、火灾、腐烂的木材等，二氧化碳(CO2)每天都会积累起来。如果矿井内部没有足够的空气通风来稀释多余的二氧化碳，那么氧气水平耗尽的地方就会形成“黑潮”大气，二氧化碳水平可能会增加高达20%，由于氧气的置换，会立即造成人类窒息的风险。在该项目中，OptoSci建议在信号处理方案之外，研究使用各种新型激光、光纤和气体传感器设计的可行性，以实现对数百个点以上的二氧化碳进行本质、安全、低维护的监测，达到矿山法规要求的灵敏度水平。

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. Under this project OptoSci proposes toexamine the feasibility of using various novel laser, optical fibre and gas sensor designs inaddition to signal processing schemes to allow intrinsically, safe, low maintenance monitoringof CO2 over hundreds of points to the sensitivity levels required by mine regulations.