Patent ID: 8962207
Filing Date: 2015-02-24
Classification: G01M,G01N

Abstract:
1. A gas detection system configured to detect a specific gas present in a certain space, the gas detection system comprising: multiple gas concentration detectors installed in at least two of the following different locations: fuel cell casing, an engine compartment, passenger compartment, and proximate to a hydrogen tank, each being arranged to detect specific gas concentrations; and a determination module programmed to determine whether the gas concentration detected by each of the multiple gas concentration detectors exceeds a threshold value individually set corresponding to the each of the multiple gas concentration detectors, wherein the threshold values set for the multiple gas concentration detectors to be compared with the detected gas concentrations are different from each other, wherein in response to input of a checking instruction for checking up the respective gas concentration detectors into the determination module, the determination module is programmed to use a threshold value for checkup purpose, in place of each of the set threshold values, and is programmed to determine whether each of the multiple gas concentration detectors has normal functionality or any abnormality, based on a concentration of a specific gas-containing test gas detected by the gas concentration detector, and wherein the threshold value for checkup purpose is set as a common threshold value for all the multiple gas concentration detectors and is a different value from the threshold values set for the multiple gas concentration detectors to be compared with the detected gas concentrations.