JPH0178943U - - Google Patents

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Publication number
JPH0178943U
JPH0178943U JP1987175631U JP17563187U JPH0178943U JP H0178943 U JPH0178943 U JP H0178943U JP 1987175631 U JP1987175631 U JP 1987175631U JP 17563187 U JP17563187 U JP 17563187U JP H0178943 U JPH0178943 U JP H0178943U
Authority
JP
Japan
Prior art keywords
gas
output
conversion means
detection state
detection device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1987175631U
Other languages
Japanese (ja)
Other versions
JPH06764Y2 (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987175631U priority Critical patent/JPH06764Y2/en
Publication of JPH0178943U publication Critical patent/JPH0178943U/ja
Application granted granted Critical
Publication of JPH06764Y2 publication Critical patent/JPH06764Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は実施例のガス検出装置の特性図、第２
図はその回路図、第３図は実施例の配置を現す図
、第４図は変形例の要部回路図、第５図は他の変
形例の要部回路図、第６図は第１図〜第３図の実
施例の動作フローチヤート、第７図は実施例の特
性図である。 図において、２……ガスセンサ、３０，７０…
…マイクロコンピユータ。 Figure 1 is a characteristic diagram of the gas detection device of the example, Figure 2
3 is a diagram showing the arrangement of the embodiment, FIG. 4 is a circuit diagram of the main part of a modification, FIG. 5 is a circuit diagram of the main part of another modification, and FIG. 6 is a diagram showing the arrangement of the embodiment. 3 to 3 are flowcharts of the operation of the embodiment, and FIG. 7 is a characteristic diagram of the embodiment. In the figure, 2... gas sensor, 30, 70...
...microcomputer.

Claims (1)

【実用新案登録請求の範囲】 (1) 金属酸化物半導体の抵抗値の変化を用いた
ガスセンサと、 ガスセンサの出力をセンサのガス濃度依存性と
比較し、ガス濃度に換算するための換算手段と、 検出装置をバツクグラウンドガスの検出状態か
ら、検出対象ガスの検出状態に切り替えるための
スイツチと、 バツクグラウンドガスの検出状態での換算手段
の出力を記憶するための記憶手段と、 検出対象ガスの検出状態での換算手段の出力と
、記憶手段の出力との差から、検出対象ガスの濃
度を求めるための引き算手段とを設けた、ガス検
出装置。 (2) 実用新案登録請求の範囲第１項記載のガス
検出装置において、 前記換算手段を、ガスセンサ出力のガス濃度依
存性を記憶させた記憶手段により構成したことを
特徴とする、ガス検出装置。 (3) 実用新案登録請求の範囲第１項記載のガス
検出装置において、 前記換算手段をべき乗手段により構成したこと
を特徴とする、ガス検出装置。[Scope of Claim for Utility Model Registration] (1) A gas sensor that uses changes in the resistance value of a metal oxide semiconductor, and a conversion means for comparing the output of the gas sensor with the gas concentration dependence of the sensor and converting it into a gas concentration. , a switch for switching the detection device from a background gas detection state to a detection target gas detection state, a storage means for storing the output of the conversion means in the background gas detection state, and a detection target gas detection state. A gas detection device comprising subtraction means for determining the concentration of a gas to be detected from the difference between the output of the conversion means and the output of the storage means in a detection state. (2) Utility Model Registration The gas detection device according to claim 1, wherein the conversion means is constituted by a storage means that stores the gas concentration dependence of the gas sensor output. (3) The gas detection device according to claim 1, wherein the conversion means is constituted by exponentiation means.
JP1987175631U 1987-11-17 1987-11-17 Gas detector Expired - Lifetime JPH06764Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987175631U JPH06764Y2 (en) 1987-11-17 1987-11-17 Gas detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987175631U JPH06764Y2 (en) 1987-11-17 1987-11-17 Gas detector

Publications (2)

Publication Number Publication Date
JPH0178943U true JPH0178943U (en) 1989-05-26
JPH06764Y2 JPH06764Y2 (en) 1994-01-05

Family

ID=31467416

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987175631U Expired - Lifetime JPH06764Y2 (en) 1987-11-17 1987-11-17 Gas detector

Country Status (1)

Country Link
JP (1) JPH06764Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03162659A (en) * 1989-11-20 1991-07-12 Matsushita Seiko Co Ltd Carbon dioxide concentration detector
JP2012510319A (en) * 2008-12-01 2012-05-10 トリコーンテク コーポレーション Breath analysis system and method for diagnosis and disease management of asthma, tuberculosis and lung cancer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4575861B2 (en) * 2005-08-22 2010-11-04 エフアイエス株式会社 Detector with temperature compensation function
JP4575862B2 (en) * 2005-08-22 2010-11-04 エフアイエス株式会社 Gas detector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03162659A (en) * 1989-11-20 1991-07-12 Matsushita Seiko Co Ltd Carbon dioxide concentration detector
JP2012510319A (en) * 2008-12-01 2012-05-10 トリコーンテク コーポレーション Breath analysis system and method for diagnosis and disease management of asthma, tuberculosis and lung cancer
US10568541B2 (en) 2008-12-01 2020-02-25 TricornTech Taiwan Breath analysis systems and methods for asthma, tuberculosis and lung cancer diagnostics and disease management
US11690528B2 (en) 2008-12-01 2023-07-04 TricornTech Taiwan Breath analysis system and methods for asthma, tuberculosis and lung cancer diagnostics and disease management

Also Published As

Publication number Publication date
JPH06764Y2 (en) 1994-01-05

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