A design of monitoring softwarefor distributed optical fiber sensing of methane

Optical fiber sensing of methane is a new kind of gas detecting method based on spectral absorption technology. The method has lots of advantages, such as good sensitivity, high precision, less calibration, so that it´s more and more widely used in industrial production. In order to match the requirements of hardware detecting system, this paper presents a design of monitoring software for distributed optical fiber sensing of methane based on VB development environment. This design can make methane concentration obtained by sensing probes of lower computer showed on the interface of upper computer in real time, and can export the data report. Meanwhile, it can send out alerting signal and fix the stoppage position quickly when stoppage happens. This paper introduces the following aspects in detail, the establishment of communication protocol, the design of data base, the design and realization of interface.