Mobile Gas Detector

Sensor Review

ISSN: 0260-2288

Article publication date: 1 December 2004




Rigelsford, J. (2004), "Mobile Gas Detector", Sensor Review, Vol. 24 No. 4.



Emerald Group Publishing Limited

Copyright © 2004, Emerald Group Publishing Limited

Mobile Gas Detector

Mobile Gas Detector

Applicant: John Tulip, CanadaPatent number: US6,750,467Publication date: 15 June 2004Title: Vehicle mounted gas detector

Keywords: Patents, Gases, Sensors

This patent presents a mobile gas detector, which is suitable for air-borne detection of methane and comprises a laser transmitter and signal analyser carried on a vehicle. The gas detector comprises: a laser transmitter and signal analyser carried within a vehicle; a laser absorption cell carried on the exterior of the vehicle; a light guide connecting light from the laser transmitter into the laser absorption cell; a photo-detector mounted with the laser absorption cell exterior to the vehicle to convert light that has traversed the laser absorption cell into electrical signals; and a cable connecting the photo-detector to the signal analyser. Preferably, the invention utilizes a laser transmitter that operates in the methane absorption band at 1,650nm, and the photo-detector is a photo-diode operating in photo-voltaic mode to avoid the need for an external power supply.

Jon Rigelsford

Related articles