Fuel vapour detector

Sensor Review

ISSN: 0260-2288

Article publication date: 1 June 2000



(2000), "Fuel vapour detector", Sensor Review, Vol. 20 No. 2. https://doi.org/10.1108/sr.2000.08720bad.020



Emerald Group Publishing Limited

Copyright © 2000, MCB UP Limited

Fuel vapour detector

Fuel vapour detector

Keywords: Sensors, Polymers

Applicants: Tsunetoshi Sugiyama (JP), Yusuke Takano (JP), Kenji Motosugi (JP), Tetsu Yamamoto (JP), Hoechst Industry Ltd (JP)Patent number: WO9721098Publication date: 12 June 1997Title: Optical fuel vapor detector utilizing thin polymer film and fuel leak monitor system

The invention comprises a fuel vapour detector system having a simple and low-cost structure, which is essentially safe, and a fuel leak monitor system using the detector. The fuel vapour detector includes a light source having a light emitting body, a detector including a sensor having a substrate with a polymer coating that changes in thickness and/or refractive index when coming into contact with a fuel vapour, the detector being disposed in such a manner that light from the light source is incident perpendicularly on it. It also includes a light-transmitting output portion for allowing light from the light source to pass through it and to allow it to be incident on the detector. Receiving reflected light from the sensor, the output portion is placed between the light source and the detector, and a photodetector receives reflected light from the sensor and generates a signal corresponding to reflected light.