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