Wireless Gas Leak Detection and Localization

Abstract

Thousands of industrial gas leaks occur every year, with many leading to injuries, deaths, equipment damage, and a disastrous environmental effect. There have been many attempts at solving this problem, but with limited success. This paper proposes a wireless gas leak detection and localization solution.With a monitoring network of 20 wireless devices covering 200m 2 , 60 propane releases are performed. The detection and localization algorithms proposed here are applied to the collected concentration data, and the methodology is evaluated. A detection rate of 91% is achieved, with seven false alarms recorded over three days, and an average detection delay of 108 seconds. The localization results show an accuracy of 5 meters. Recommendations for future explosive gas sensor design are then presented.

On-the-Fly Bandwidth Reservation for 6TiSCH Wireless Industrial Networks

“…15.4e (2012) [6]. While the first two standards define a complete protocol stack, the latter only defines the physical and three distinct Medium Access Control (MAC) layers: Low Latency Deterministic Network (LLDN), Timeslotted Channel Hopping (TSCH), and Deterministic and Synchronous Multi-channel Extension (DSME).…”

“…The clean layering allows IEEE802. 15.4e TSCH to fit under an IPv6-enabled protocol stack for low-power wireless networks. This architecture was recently proposed by the IETF 6TiSCH Working Group (WG) 1 .…”

“…6TiSCH "glues" together the IEEE802. 15.4e TSCH MAC layer with an IPv6-enabled upper stack (e.g. 6LoWPAN [10], and the Routing Protocol for Low-Power and Lossy Networks, RPL [11]).…”

“…For instance, gas leak detection [15], [16] must start transmitting at a higher sample rate to reduce the time to locate the leak, to calculate its magnitude, and to estimate the prospective evolution of this failure. Another example is monitoring grain silos to prevent fire or explosions [17]; sensor motes are programmed to change the data capture frequency and wake up secondary sensing devices when certain humidity, temperature, oxygen, or carbon monoxide levels are reached.…”

A Robust Method for Tuning Photoacoustic Gas Detectors

“…Semiconductor sources and detectors are promising, but problems such as thermal stability [15] and temperature compensation [16] persist. Localization of gas leaks was investigated in [17] for the case of propane gas. Recent developments include enhanced metal oxide sensor designs [10] and microcantilever sensors [18].…”