Distributed wireless sensing for fugitive methane leak detection

An integral monitoring concept for data‐driven detection and localization of incipient leakages by fusion of process and environment data

“…[5,19] More complex models are capable of taking influences like wind speed and direction into account. [6,7] In contrast to closely related processing steps of the measured signals, a more general task is fault detection and isolation (FDI). The event of a leakage is typically defined as a so-called parameter fault in the FDI community.…”

“…[4] Still, point detectors are limited in detection range which supports the focus on point detector networks. [5][6][7] Another way solving this issue is line-and area sensors covering wider ranges. [8][9][10] Beside classical detection methods also other technologies like acoustics are becoming more popular.…”

“…[ 5,19 ] More complex models are capable of taking influences like wind speed and direction into account. [ 6,7 ]…”

“…A leakage, for instance, is not only a multiplicative fault within a process i, but can also be interpreted as a fault in the PES. Thus, it can be modeled in a similar way as in (3) but in context of the PES G PES i in (7). With a reasonably chosen evaluation, for example, a system norm, one can make conclusions about the operation of the PES.…”

Survey of autonomous gas leak detection and quantification with snapshot infrared spectral imaging

“…Point sensors report the detected gas in concentration units (parts per million, or ppm), have typical response times on the order of seconds to tens of seconds, and can often detect concentrations of < 1 ppm, depending on the technology used and the type of gas detected [21,22]. They typically cannot discriminate among different gas types, and generally have different response amplitudes for different gases, so that the gas type must be known a priori for accurate concentration measurement.…”