Gas sensor, gas detection device, gas detection method, and device provided with gas sensor or gas detection device

Abstract

Provided are: a gas sensor which is able to have improved gas detection performance, while being capable of suppressing variation in the output characteristics among individual gas sensors; a gas detection device; a gas detection method; and a device which is provided with a gas sensor or a gas detection device. This gas detection device (10) is provided with: a heat sensitive resistive element (2); a lead part (22b) which is connected to the heat sensitive resistive element (2) by welding, while having no material being interposed therebetween; a gas sensor (1) which is thermally coupled to the heat sensitive resistive element (2), while comprising a porous gas molecule adsorption material (3) from which specific gas molecules are desorbed by means of heating; and an electric power supplyunit which supplies electric power to the heat sensitive resistive element (2), thereby heating the heat sensitive resistive element (2).

Description

technical field [0001] The invention relates to a gas sensor capable of detecting gas molecules, a gas detection device, a gas detection method and a device comprising the gas sensor and the gas detection device. Background technique [0002] In the past, humidity sensors or gas sensors have been used as gas detection devices in order to detect humidity or specified gases in home appliances, office automation (OA) equipment, food storage equipment, medical equipment, automobiles and other transportation equipment. [0003] With such a gas detection device, it is necessary to improve the gas detection sensitivity at low temperature or to select the gas selectivity to select the gas to be detected. [0004] In addition, there is known a humidity sensor including a humidity-sensing resistance element in which a metal resistance wire is surrounded by A-type zeolite, for example, molecular sieve 5A (see Patent Document 1 and Patent Document 2). [0005] In addition, in order to ...

AI Technical Summary

Problems solved by technology

In addition, the humidity sensors shown in Patent Document 1 and Patent Document 2 apply electricity to the metal resistance wire, and adjust the temperature of the metal resistance wire to a high temperature within the range of 300°C to 500°C. Problem: The energy used to heat the metal resistance wire is large, the power consumption becomes large, and the life is short

Images