公开(公告)号：WO2016189281A1

公开(公告)日：2016-12-01

申请号：PCT/GB2016/051464

申请日：2016-05-20

Applicant: OPTOSCI LIMITED

Inventor： WALSH, Douglas ,  MAUCHLINE, Iain ,  DOYLE, Jim ,  PILLANS, John ,  ARMSTRONG, Ian

IPC: G01N21/39 ,  G01M3/38 ,  G01N21/35

CPC classification number: G01N21/39 ,  G01M3/20 ,  G01M3/38 ,  G01N21/3504 ,  G01N2021/399 ,  G01N2201/08

Abstract: To detect and locate leakage sites along utility gas pipework safely, an optical gas sensing system is deployed in cable ducting proximal to the gas pipework. Concentrations of natural gas present in underground or otherwise enclosed cable ducting is measured by a small form factor measurement sensor and together with measurements of the linear displacement of the measurement sensor these concentration measurements can be used to deduce the likely site of gas leaks.

Abstract translation: 为了安全检测和定位沿公用气管道的泄漏点，光学气体传感系统部署在靠近气体管道的电缆管道中。 存在于地下或其他封闭的电缆管道中的天然气浓度由小尺寸测量传感器测量，并与测量传感器的线性位移测量结合使用，这些浓度测量值可用于推断出气体泄漏的可能位置。

公开(公告)号：WO2016075438A1

公开(公告)日：2016-05-19

申请号：PCT/GB2015/053307

申请日：2015-11-03

Applicant: OPTOSCI LIMITED

Inventor： WALSH, Douglas ,  MAUCHLINE, Iain ,  DOYLE, Jim ,  PILLANS, John ,  ARMSTRONG, Ian

IPC: G01N21/35 ,  G01N21/39

CPC classification number: G01N21/39 ,  G01N2201/0826 ,  G01N2201/084

Abstract: A modular architecture is implemented in the apparatus providing a multipoint optical gas sensing network. A laser beam from a tunable laser diode source is split and each of the resulting beams is directed via optical fibres to respective gas sensing cells. As the laser beam is configured to sweep a range of frequencies spanning a characteristic absorption frequency of a target gas, a measurement of the level of absorption of the light from the laser beam incident at each cell is correlated with the concentration of the target gas. Photodetectors are arranged to receive light transmitted through the respective cells and the attenuation sensed in the laser beam is attributed to absorption (once other factors have been corrected for). The photodetectors are arranged in groups on receiver modules: receiver modules are provided with dedicated processing capability.

Abstract translation: 在提供多点光学气体感测网络的装置中实现模块化架构。 来自可调谐激光二极管源的激光束被分裂，并且所得到的每个光束通过光纤被引导到相应的气体感测单元。 由于激光束被配置为扫描跨越目标气体的特征吸收频率的频率范围，所以来自入射到每个电池的激光束的光的吸收水平的测量与目标气体的浓度相关。 光检测器被布置成接收透过各个单元的光，并且在激光束中感测到的衰减归因于吸收（一旦其它因素已被校正）。 光电检测器在接收器模块上分组布置：接收器模块具有专用处理能力。