Gas detection systems and methods using search area indicators

摘要

In some embodiments, a computer system generates display content indicating a likely direction and estimated distance to a potential gas leak source. The content includes a street map and at least one search area indicator on the map that indicates a search area suspected to have a gas leak source. The search area indicator has an axis indicating a representative wind direction relative to a geo-referenced location of at least one gas concentration measurement point. The search area indicator also has a width relative to the axis. The width is indicative of a wind direction variability associated with a plurality of wind direction measurements in an area of the gas concentration measurement point. The axis also preferably has a length indicating an estimated maximum distance to the potential gas leak source.

主权项

1. A method comprising:
performing a gas leak detection survey by
measuring a plurality of gas concentration values at a corresponding plurality of measurement points using a gas concentration measurement device carried by a moving vehicle along a survey path,determining a plurality of geospatially-referenced locations of the plurality of measurement points using a positioning device carried by the moving vehicle, andmeasuring a plurality of wind direction values relative to the moving vehicle using a wind direction determination device carried by the moving vehicle, wherein the plurality of wind direction values relative to the moving vehicle are measured within a time interval during which at least one of the plurality of gas concentration values is measured, the time interval being less than or equal to 2 minutes; converting, using at least one hardware processor, the plurality of wind direction values relative to the moving vehicle to a plurality of wind direction values relative to ground, wherein the hardware processor is connected to the wind direction determination device, the positioning device and the gas concentration measurement device; and employing the at least one hardware processor to generate content to be displayed, the content including at least one search area indicator positioned on a street map, the search area indicator indicating a search area suspected to have a gas leak source, the search area indicator having an axis indicating a representative wind direction characterizing the plurality of wind direction values relative to ground, the search area indicator having a width relative to the axis, wherein the width is indicative of a wind direction variability characterizing the plurality of wind direction values relative to ground; and transmitting the content to be displayed to a display device.