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Patent Searching and Data


Title:
MULTICHANNEL RESISTANCE-TYPE GAS SENSOR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/135711
Kind Code:
A1
Abstract:
A multichannel resistance-type gas sensor system comprises: a multichannel array having multiple gas sensor channels connected to multiple resistance-type gas sensors, respectively; a fist preprocessing portion for analyzing a sensing value acquired from one of the multiple gas sensor channels and outputting a first voltage value corresponding thereto, by using a mode selected from a current mode, a resistance mode, and an external resistance mode; a first ADC for converting the first voltage value into digital data; and a control portion for controlling the first preprocessing portion so as to perform one of the modes. In the current mode, a sensing value equal to or smaller than a preset first resistance value can be analyzed. In the external resistance mode, a sensing value equal to or larger than a preset second resistance value can be analyzed. In the resistance mode, a sensing value larger than the preset first resistance value and smaller than the preset second resistance value can be analyzed.

Inventors:
KIM JAE JOON (KR)
CHOI SUBIN (KR)
PARK KYEONG-HWAN (KR)
Application Number:
KR2017/006611
Publication Date:
July 26, 2018
Filing Date:
June 22, 2017
Export Citation:
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Assignee:
ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECH (KR)
International Classes:
G01N27/04; G01N33/00
Foreign References:
KR20070061042A2007-06-13
KR101521091B12015-05-20
KR20100025832A2010-03-10
US20140333289A12014-11-13
KR20050051725A2005-06-02
Attorney, Agent or Firm:
FIRSTLAW P.C. (KR)
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