JP3227684B2 - Gas measurement device - Google Patents
Gas measurement deviceInfo
- Publication number
- JP3227684B2 JP3227684B2 JP31958993A JP31958993A JP3227684B2 JP 3227684 B2 JP3227684 B2 JP 3227684B2 JP 31958993 A JP31958993 A JP 31958993A JP 31958993 A JP31958993 A JP 31958993A JP 3227684 B2 JP3227684 B2 JP 3227684B2
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- gas
- humidity
- sensor
- temperature
- measured
- Prior art date
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、匂いセンサ等のガスセ
ンサを用いるガス測定装置に関し、特に前記ガスセンサ
の温度、湿度及びガスセンサの経時変化の影響を補償す
ることが可能なガス測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas measuring device using a gas sensor such as an odor sensor, and more particularly to a gas measuring device capable of compensating for the effects of the temperature and humidity of the gas sensor and the aging of the gas sensor.
【０００２】[0002]
【従来の技術】従来のガス測定装置では、例えば実開平
２−４５４４５号公報等に記載されているように標準ガ
スを用いてゼロ点の校正を行い被測定ガスを測定してい
る。図３はこのような従来のガス測定装置の一例を示す
構成ブロック図である。2. Description of the Related Art In a conventional gas measuring apparatus, for example, as described in Japanese Utility Model Application Laid-Open No. 2-45445, a zero point is calibrated using a standard gas to measure a gas to be measured. FIG. 3 is a configuration block diagram showing an example of such a conventional gas measurement device.
【０００３】図３において１は標準空気のボンベ若しく
は吸着剤を通過させて脱臭する活性炭フィルタ等の標準
ガス発生手段、２は切り換え手段、３は匂いセンサ等の
ガスセンサを用いたガス測定手段である。また、１００
は被測定ガスの吸気口、１０１はガス測定手段３の排気
口、１０２はガス測定手段３の出力信号である。In FIG. 3, reference numeral 1 denotes a standard gas generating means such as an activated carbon filter for deodorizing by passing a standard air cylinder or adsorbent, 2 a switching means, and 3 a gas measuring means using a gas sensor such as an odor sensor. . Also, 100
Is an intake port of the gas to be measured, 101 is an exhaust port of the gas measuring means 3, and 102 is an output signal of the gas measuring means 3.
【０００４】標準ガス発生手段１の出力及び吸気口１０
０は切り換え手段２の２つの入力にそれぞれ接続され、
切り換え手段２の出力はガス測定手段３に接続される。
ガス測定手段３には切り換え手段２から供給されたガス
を排気する排気口１０１が設けられ、出力信号１０２が
出力される。The output of the standard gas generating means 1 and the intake port 10
0 is respectively connected to two inputs of the switching means 2,
The output of the switching means 2 is connected to the gas measuring means 3.
The gas measuring means 3 is provided with an exhaust port 101 for exhausting the gas supplied from the switching means 2, and outputs an output signal 102.
【０００５】ここで、図３に示す従来例の動作を説明す
る。先ず、切り換え手段２で標準ガス発生手段１を選択
し、標準ガス発生手段１からの標準ガスをガス測定手段
３に供給する。ガス測定手段３ではこの標準ガスを用い
てオフセット成分を求め、このオフセット成分を用いて
ガスセンサ（図示せず。）のゼロ点を校正する。Here, the operation of the conventional example shown in FIG. 3 will be described. First, the standard gas generating means 1 is selected by the switching means 2, and the standard gas from the standard gas generating means 1 is supplied to the gas measuring means 3. The gas measuring means 3 obtains an offset component using the standard gas, and uses the offset component to calibrate a zero point of a gas sensor (not shown).
【０００６】次に、切り換え手段２で吸気口１００を選
択し、被測定ガスをガス測定手段３に供給する。ガス測
定手段３ではこの被測定ガスを測定して結果を出力信号
１０２として出力する。Next, the inlet 100 is selected by the switching means 2, and the gas to be measured is supplied to the gas measuring means 3. The gas measuring means 3 measures the measured gas and outputs the result as an output signal 102.
【０００７】この結果、図３に示す従来例では被測定ガ
スに含まれるオフセット成分を除去することができ、よ
り正確なガス測定が可能になる。As a result, in the conventional example shown in FIG. 3, the offset component contained in the gas to be measured can be removed, and more accurate gas measurement becomes possible.
【０００８】[0008]
【発明が解決しようとする課題】しかし、図３に示す従
来例において、標準ガスと被測定ガスとの湿度が異なっ
てしまい、また、標準ガスと被測定ガスとの温度も同一
ではない場合がある。However, in the conventional example shown in FIG. 3, there is a case where the humidity of the standard gas and the gas to be measured are different, and the temperatures of the standard gas and the gas to be measured are not the same. is there.
【０００９】一方、匂いセンサ等のガスセンサは一般に
温度や湿度の変化によって出力が変化してしまうため、
標準ガスと被測定ガスとの湿度差及び温度差による測定
誤差が生じてしまうと言った問題点がある。従って本発
明の目的は、標準ガスと被測定ガスとの湿度差及び温度
差による測定誤差を補償することが可能なガス測定装置
を実現することにある。On the other hand, gas sensors such as odor sensors generally change their output due to changes in temperature and humidity.
There is a problem that a measurement error occurs due to a humidity difference and a temperature difference between the standard gas and the gas to be measured. Therefore, an object of the present invention is to realize a gas measuring device capable of compensating for a measurement error due to a humidity difference and a temperature difference between a standard gas and a gas to be measured.
【００１０】[0010]
【課題を解決するための手段】このような目的を達成す
るために、本発明では、ガスセンサのゼロ点を標準ガス
を用いて校正して被測定ガスの測定を行うガス測定装置
において、前記標準ガスを供給する標準ガス発生手段
と、前記被測定ガスと前記標準ガスとの一方を選択する
切り換え手段と、この切り換え手段の出力が接続され、
温度センサ及び湿度センサを用いて前記被測定ガス及び
前記標準ガスのそれぞれの温度と湿度を測定して前記被
測定ガスと前記標準ガスとの間の温度差と湿度差に基づ
く影響分を演算し、前記ガスセンサのオフセット成分と
前記影響分とを前記ガスセンサの出力から減算するガス
測定手段とを備えたことを特徴とするものである。According to the present invention, there is provided a gas measuring apparatus for measuring a gas to be measured by calibrating a zero point of a gas sensor using a standard gas. Standard gas generating means for supplying gas, switching means for selecting one of the gas to be measured and the standard gas, and an output of the switching means is connected,
Using a temperature sensor and a humidity sensor, measure the temperature and humidity of each of the measured gas and the standard gas, and calculate the influence based on the temperature difference and the humidity difference between the measured gas and the standard gas. And a gas measuring means for subtracting the offset component of the gas sensor and the influence component from the output of the gas sensor.
【００１１】[0011]
【作用】標準ガスと被測定ガスの温度及び湿度をそれぞ
れ測定し、これらの温度差及び湿度差に基づく影響分と
匂いセンサのオフセット成分とを匂いセンサの出力から
減算することにより、標準ガスと被測定ガスとの湿度差
及び温度差による測定誤差を補償することができる。The temperature and humidity of the standard gas and the gas to be measured are measured, and the influence of the temperature difference and the humidity difference and the offset component of the odor sensor are subtracted from the output of the odor sensor. It is possible to compensate for a measurement error due to a humidity difference and a temperature difference from the gas to be measured.
【００１２】[0012]
【実施例】以下本発明を図面を用いて詳細に説明する。
図１は本発明に係るガス測定装置の一実施例を示す構成
ブロック図である。ここで、１，２及び１００は図３と
同一符号を付してある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.
FIG. 1 is a configuration block diagram showing one embodiment of the gas measuring device according to the present invention. Here, 1, 2, and 100 are denoted by the same reference numerals as in FIG.
【００１３】図１において４は測定セル、５はガスセン
サである匂いセンサ、６は温度センサ、７は湿度セン
サ、８及び９は記憶回路、１０は演算回路、１１は減算
回路である。また、１０１ａは排気口、１０２ａは出力
信号であり、４〜１１及び１０１ａはガス測定手段５０
を構成している。In FIG. 1, 4 is a measuring cell, 5 is an odor sensor as a gas sensor, 6 is a temperature sensor, 7 is a humidity sensor, 8 and 9 are storage circuits, 10 is an arithmetic circuit, and 11 is a subtraction circuit. 101a is an exhaust port, 102a is an output signal, and 4 to 11 and 101a are gas measuring means 50.
Is composed.
【００１４】標準ガス発生手段１の出力及び吸気口１０
０は切り換え手段２の２つの入力にそれぞれ接続され、
切り換え手段２の出力は測定セル４に接続される。ま
た、測定セル４の内部には匂いセンサ５、温度センサ６
及び湿度センサ７がそれぞれ配置され、排気口１０１ａ
が設けられている。Output of standard gas generating means 1 and intake port 10
0 is respectively connected to two inputs of the switching means 2,
The output of the switching means 2 is connected to the measuring cell 4. Further, inside the measuring cell 4, an odor sensor 5 and a temperature sensor 6 are provided.
And the humidity sensor 7 are disposed respectively, and the exhaust port 101a
Is provided.
【００１５】温度センサ６及び湿度センサ７の出力は記
憶回路８及び９にそれぞれ接続され、記憶回路８及び９
の出力は演算回路１０に接続される。演算回路１０の出
力は減算回路１１の減算入力端子に接続され、匂いセン
サ５の出力は減算回路１１の加算入力端子に接続され
る。また、減算回路１１は出力信号１０２ａを出力す
る。The outputs of the temperature sensor 6 and the humidity sensor 7 are connected to storage circuits 8 and 9, respectively.
Are connected to the arithmetic circuit 10. The output of the arithmetic circuit 10 is connected to the subtraction input terminal of the subtraction circuit 11, and the output of the odor sensor 5 is connected to the addition input terminal of the subtraction circuit 11. The subtraction circuit 11 outputs an output signal 102a.
【００１６】ここで、図１に示す実施例の動作を説明す
る。先ず、本願発明では匂いセンサ５の特性を、 ｆ(ｃ,ｔ,ｈ)＝ｆ１(ｃ)＋ｆ２(ｔ,ｈ)＋ｆ３ (1) と仮定している。Here, the operation of the embodiment shown in FIG. 1 will be described. First, in the present invention, the characteristics of the odor sensor 5 are assumed to be f (c, t, h) = f1 (c) + f2 (t, h) + f3 (1).
【００１７】式（１）において”ｆ(ｃ,ｔ,ｈ)”は匂い
センサ５の出力であり、”ｃ”は匂い物質の濃度を、”
ｔ”は温度を、”ｈ”は湿度をそれぞれ示している。従
って、”ｆ１(ｃ)”は匂い物質の濃度の関数、”ｆ２
(ｔ,ｈ) ”は温度及び湿度の関数である。また、”ｆ
３”は匂いセンサ５のドリフトであって時間に対してゆ
っくりと変化する。In equation (1), “f (c, t, h)” is the output of the odor sensor 5, “c” is the concentration of the odor substance,
“t” indicates the temperature and “h” indicates the humidity, so “f1 (c)” is a function of the concentration of the odorant, and “f2”.
(t, h) "is a function of temperature and humidity, and" f
3 "is a drift of the odor sensor 5 and changes slowly with time.
【００１８】また、匂い物質の濃度がゼロの場合、前記
関数”ｆ１”は、 ｆ１(０)＝０ (2) となる。When the concentration of the odorant is zero, the function "f1" becomes f1 (0) = 0 (2).
【００１９】即ち、匂いセンサ５の特性は、匂い物質に
のみ依存する関数”ｆ１”に温度及び湿度に基づく変動
に相当する関数”ｆ２”と経時変化に相当する関数”ｆ
３”とが加算されているものとしている。That is, the characteristics of the odor sensor 5 include a function "f1" which depends only on the odor substance, a function "f2" corresponding to a change based on temperature and humidity, and a function "f2" corresponding to a change with time.
3 "is added.
【００２０】次に、図２を用いて実際の測定動作を説明
する。図２は切り換え手段２の状態を示す説明図であ
る。Next, an actual measuring operation will be described with reference to FIG. FIG. 2 is an explanatory diagram showing the state of the switching means 2.
【００２１】第１に、切り換え手段２は図２（Ａ）に示
すように図２中”イ”と”ニ”が接続され、標準ガス発
生手段１の出力が選択されて測定セル４に供給される。First, as shown in FIG. 2A, the switching means 2 is connected between "a" and "d" in FIG. 2, and the output of the standard gas generating means 1 is selected and supplied to the measuring cell 4. Is done.
【００２２】この状態で、温度センサ６及び湿度センサ
７により標準ガスの温度”ｔ０”及び湿度”ｈ０”を測
定し、それそれの値を記憶回路８及び９に格納する。In this state, the temperature "t0" and the humidity "h0" of the standard gas are measured by the temperature sensor 6 and the humidity sensor 7, and the respective values are stored in the storage circuits 8 and 9.
【００２３】また、演算回路１０は記憶回路８及び９か
ら標準ガスの温度”ｔ０”及び湿度”ｈ０”を読出し、
温度差及び湿度差による影響分”Ｖerr0”を演算する。
但し、第１の状態では温度差及び湿度差は存在しないの
で、 Ｖerr0＝ｆ２(ｔ０,ｈ０)−ｆ２(ｔ０,ｈ０) ＝０ (3) と演算して出力する。The arithmetic circuit 10 reads the temperature "t0" and the humidity "h0" of the standard gas from the storage circuits 8 and 9,
The influence "V err0 " by the temperature difference and the humidity difference is calculated.
However, since there is no temperature difference and humidity difference in the first state, the output is calculated as Verr0 = f2 (t0, h0) -f2 (t0, h0) = 0 (3).
【００２４】一方、第１の状態での匂いセンサ５の出力
は式（１）より、 ｆ(０,ｔ０,ｈ０)＝ｆ１(０)＋ｆ２(ｔ０,ｈ０) ＋ｆ３ (4) であり、この出力が減算回路１１の加算入力端子に入力
され、演算回路１０からの出力が減算回路１１の減算入
力端子に入力される。On the other hand, the output of the odor sensor 5 in the first state is f (0, t0, h0) = f1 (0) + f2 (t0, h0) + f3 (4) according to equation (1). The output is input to the addition input terminal of the subtraction circuit 11, and the output from the arithmetic circuit 10 is input to the subtraction input terminal of the subtraction circuit 11.
【００２５】標準ガスに対する減算回路１１の出力であ
る出力信号１０２ａ”ＶZERO”は、減算回路１１のオフ
セット”Ｖoff ”が”０”の場合 ＶZERO＝{ｆ１(０)＋ｆ２(ｔ０,ｈ０)}＋ｆ３−０＋Ｖoff ＝ｆ１(０)＋ｆ２(ｔ０,ｈ０)＋ｆ３ (5) となる。但し、式（２）より、 ＶZERO＝ｆ２(ｔ０,ｈ０)＋ｆ３ (6) となる。The output signal 102a "V ZERO " which is the output of the subtraction circuit 11 for the standard gas is V ZERO = {f1 (0) + f2 (t0, h0) when the offset "V off " of the subtraction circuit 11 is "0". )} + F3-0 + V off = f1 (0) + f2 (t0, h0) + f3 (5) However, from equation (2), V ZERO = f2 (t0, h0) + f3 (6).
【００２６】ここで、測定セル４には標準ガスが供給さ
れているので出力信号１０２ａである式（６）は”０”
でなければならず、従って、減算回路１１のオフセッ
ト”Ｖ off ”を、 Ｖoff＝−ｆ２(ｔ０,ｈ０)−ｆ３ (7) と調整することにより式（６）は”０”になる。Here, a standard gas is supplied to the measuring cell 4.
Equation (6), which is the output signal 102a, is "0"
Therefore, the offset of the subtraction circuit 11 must be
"V" off ”, VoffEquation (6) becomes "0" by adjusting = -f2 (t0, h0) -f3 (7).
【００２７】第２に、切り換え手段２は図２（Ｂ）に示
すように図２中”イ”と”ロ”が接続され、吸気口１０
０が選択され、吸気口１００から吸気された被測定ガス
が測定セル４に供給される。Second, as shown in FIG. 2B, the switching means 2 is connected between "a" and "b" in FIG.
0 is selected, and the gas to be measured sucked from the inlet 100 is supplied to the measuring cell 4.
【００２８】この状態で、温度センサ６及び湿度センサ
７により被測定ガスの温度”ｔ１”及び湿度”ｈ１”を
測定し、それそれの値を記憶回路８及び９に格納する。In this state, the temperature “t 1” and the humidity “h 1” of the gas to be measured are measured by the temperature sensor 6 and the humidity sensor 7, and the respective values are stored in the storage circuits 8 and 9.
【００２９】また、演算回路１０は記憶回路８及び９か
ら前回測定した標準ガスの温度”ｔ０”及び湿度”ｈ
０”と今回測定した被測定ガスの温度”ｔ１”及び湿
度”ｈ１”をそれぞれ読出し、温度差及び湿度差による
影響分”Ｖerr1”を、 Ｖerr1＝ｆ２(ｔ１,ｈ１)−ｆ２(ｔ０,ｈ０) (8) と演算して出力する。The arithmetic circuit 10 stores the temperature "t0" and the humidity "h" of the previously measured standard gas from the storage circuits 8 and 9.
0 "and the temperature" t1 "and the humidity" h1 "of the gas to be measured this time, respectively, and the influence" V err1 "due to the temperature difference and the humidity difference is calculated as V err1 = f2 (t1, h1) -f2 (t0). , h0) (8) and outputs the result.
【００３０】一方、第２の状態での匂いセンサ５の出力
は式（１）より、 ｆ(ｃ,ｔ１,ｈ１)＝ｆ１(ｃ)＋ｆ２(ｔ１,ｈ１) ＋ｆ３’ (9) であり、この出力が減算回路１１の加算入力端子に入力
され、演算回路１０からの出力が減算回路１１の減算入
力端子に入力される。On the other hand, the output of the odor sensor 5 in the second state is f (c, t1, h1) = f1 (c) + f2 (t1, h1) + f3 ′ (9) according to equation (1). This output is input to the addition input terminal of the subtraction circuit 11, and the output from the arithmetic circuit 10 is input to the subtraction input terminal of the subtraction circuit 11.
【００３１】即ち、被測定ガスに対する減算回路１１の
出力である出力信号１０２ａ”ＶSA MP”は、 ＶSAMP＝{ｆ１(ｃ)＋ｆ２(ｔ１,ｈ１)}＋ｆ３’ −{ｆ２(ｔ１,ｈ１)−ｆ２(ｔ０,ｈ０)} ＋Ｖoff ＝ｆ１(ｃ)＋ｆ２(ｔ１,ｈ１)＋ｆ３’ −ｆ２(ｔ１,ｈ１)＋ｆ２(ｔ０,ｈ０) −ｆ２(ｔ０,ｈ０)−ｆ３ ＝ｆ１(ｃ)＋(ｆ３’−ｆ３) (10) ≒ｆ１(ｃ) となる。[0031] That is, the output is the output signal 102a "V SA MP" of the subtraction circuit 11 for the gas to be measured, V SAMP = {f1 (c ) + f2 (t1, h1)} + f3 '- {f2 (t1, h1 ) -F2 (t0, h0)} + Voff = f1 (c) + f2 (t1, h1) + f3'-f2 (t1, h1) + f2 (t0, h0) -f2 (t0, h0) -f3 = f1 (c ) + (F3′−f3) (10) ≒ f1 (c)
【００３２】ここで、２回の測定が時間的に短い間隔で
行われたものと仮定し、 ｆ３’−ｆ３≒０ (11) としている。Here, it is assumed that two measurements are performed at short time intervals, and f3'-f3 ≒ 0 (11).
【００３３】この結果、式（１０）から温度差及び湿度
差の項である第２項が削除されることから、出力信号１
０２ａは温度差及び湿度差の影響を受けず、匂い物質の
濃度にのみ依存する出力となる。As a result, the second term which is a term of the temperature difference and the humidity difference is deleted from the equation (10).
02a is an output that is not affected by the temperature difference and the humidity difference and depends only on the concentration of the odorant.
【００３４】即ち、標準ガスと被測定ガスの温度及び湿
度をそれぞれ測定し、これらの温度差及び湿度差による
影響分と匂いセンサ５のオフセット成分とを匂いセンサ
５の出力から減算することにより、標準ガスと被測定ガ
スとの湿度差及び温度差による測定誤差及び匂いセンサ
５の経時変化に起因する測定誤差を補償することが可能
になる。That is, by measuring the temperature and humidity of the standard gas and the gas to be measured, respectively, and subtracting the influence of the temperature difference and the humidity difference and the offset component of the odor sensor 5 from the output of the odor sensor 5, It is possible to compensate for a measurement error caused by a humidity difference and a temperature difference between the standard gas and the gas to be measured, and a measurement error caused by a temporal change of the odor sensor 5.
【００３５】また、匂いセンサ５のオフセット成分には
経時変化の項も含まれるので、測定直前にゼロ点校正を
行うことにより、匂いセンサ５の経時変化の影響も補償
することができる。Further, since the offset component of the odor sensor 5 includes a term of the change with time, the influence of the change with time of the odor sensor 5 can be compensated by performing the zero point calibration immediately before the measurement.
【００３６】なお、測定セル４の排気口１０１ａには必
要に応じて吸引ポンプ等を設け、被測定ガス等の吸引に
必要な負圧を確保しても良い。The exhaust port 101a of the measuring cell 4 may be provided with a suction pump or the like as necessary to secure a negative pressure required for sucking the gas to be measured.
【００３７】また、温度センサ６及び湿度センサ７の配
置場所は匂いセンサ５と同一セル内に限るわけではな
く、例えばガスの流路中等に設けても良い。The location of the temperature sensor 6 and the humidity sensor 7 is not limited to the same cell as the odor sensor 5, but may be provided in a gas flow path, for example.
【００３８】また、ガス測定手段５０をマイクロプロセ
ッサ等の制御手段を用いて制御することにより、切り換
え手段２等の制御や記憶回路８及び９、演算回路１０、
減算回路１１等の記憶・演算機能を前記制御手段に行わ
せることも可能である。Further, by controlling the gas measuring means 50 using a control means such as a microprocessor, the control of the switching means 2 and the like, the storage circuits 8 and 9, the arithmetic circuit 10,
It is also possible to cause the control means to perform the storage / arithmetic function of the subtraction circuit 11 and the like.
【００３９】また、標準ガス発生手段１としては前述の
ように標準空気のボンベ若しくは吸着剤を通過させて脱
臭する活性炭フィルタ等を用いる他、十分に清浄な空気
が得られればその空気をそのまま標準ガスとして用いて
も良い。As the standard gas generating means 1, a cylinder of standard air or an activated carbon filter which deodorizes by passing an adsorbent is used as described above. If sufficient clean air is obtained, the air is used as it is as a standard gas. It may be used as a gas.
【００４０】さらに、減算回路１１の後ろに更に乗算器
を接続し、測定した温度及び湿度から計算した補正係数
を出力信号１０２ａに乗じることにより、温度及び湿度
の変化によるスパンの誤差を補償することができる。Further, a multiplier is further connected after the subtraction circuit 11 to multiply the output signal 102a by a correction coefficient calculated from the measured temperature and humidity, thereby compensating for a span error due to a change in temperature and humidity. Can be.
【００４１】[0041]
【発明の効果】以上説明したことから明らかなように、
本発明によれば次のような効果がある。標準ガスと被測
定ガスの温度及び湿度をそれぞれ測定し、これらの温度
差及び湿度差による影響分と匂いセンサのオフセット成
分とを匂いセンサの出力から減算することにより、被測
定ガスと標準ガスの温度及び湿度を等しくすることな
く、標準ガスと被測定ガスとの湿度差及び温度差による
測定誤差を補償することが可能なガス測定装置が実現で
きる。As is apparent from the above description,
According to the present invention, the following effects can be obtained. By measuring the temperature and humidity of the standard gas and the gas to be measured, respectively, and subtracting the influence of the temperature difference and the humidity difference and the offset component of the odor sensor from the output of the odor sensor, A gas measuring device capable of compensating for a measurement difference due to a humidity difference and a temperature difference between a standard gas and a measured gas without equalizing the temperature and the humidity can be realized.
【図１】本発明に係るガス測定装置の一実施例を示す構
成ブロック図である。FIG. 1 is a configuration block diagram showing one embodiment of a gas measurement device according to the present invention.
【図２】切り換え手段の状態を示す説明図である。FIG. 2 is an explanatory diagram showing a state of a switching unit.
【図３】従来のガス測定装置の一例を示す構成ブロック
図である。FIG. 3 is a configuration block diagram illustrating an example of a conventional gas measurement device.
１ 標準ガス発生手段 ２ 切り換え手段 ３，５０ ガス測定手段 ４ 測定セル ５ 匂いセンサ ６ 温度センサ ７ 湿度センサ ８，９ 記憶回路 １０ 演算回路 １１ 減算回路 １００ 吸気口 １０１，１０１ａ 排気口 １０２，１０２ａ 出力信号 DESCRIPTION OF SYMBOLS 1 Standard gas generating means 2 Switching means 3,50 Gas measuring means 4 Measurement cell 5 Odor sensor 6 Temperature sensor 7 Humidity sensor 8,9 Storage circuit 10 Arithmetic circuit 11 Subtraction circuit 100 Inlet 101,101a Outlet 102,102a Output signal
フロントページの続き (56)参考文献 特開 昭56−70438（ＪＰ，Ａ) 特開 平４−29094（ＪＰ，Ａ) 特開 平２−115756（ＪＰ，Ａ) 特開 平５−45260（ＪＰ，Ａ) 特開 平５−72094（ＪＰ，Ａ) 特開 平５−99868（ＪＰ，Ａ) 特開 平５−107167（ＪＰ，Ａ) 実開 昭58−116646（ＪＰ，Ｕ) 実開 平２−45445（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 1/00 G01N 1/00 101 G01N 5/02 G01N 27/12 Continuation of front page (56) References JP-A-56-70438 (JP, A) JP-A-4-29094 (JP, A) JP-A-2-115756 (JP, A) JP-A-5-45260 (JP JP-A-5-72094 (JP, A) JP-A-5-99868 (JP, A) JP-A-5-107167 (JP, A) JP-A-58-116646 (JP, U) JP-A-5-116646 (JP, U) 2-45445 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) G01N 1/00 G01N 1/00 101 G01N 5/02 G01N 27/12
Claims (1)
正して被測定ガスの測定を行うガス測定装置において、 前記標準ガスを供給する標準ガス発生手段と、 前記被測定ガスと前記標準ガスとの一方を選択する切り
換え手段と、 この切り換え手段の出力が接続され、温度センサ及び湿
度センサを用いて前記被測定ガス及び前記標準ガスのそ
れぞれの温度と湿度を測定して前記被測定ガスと前記標
準ガスとの間の温度差と湿度差に基づく影響分を演算
し、前記ガスセンサのオフセット成分と前記影響分とを
前記ガスセンサの出力から減算するガス測定手段とを備
えたことを特徴とするガス測定装置。1. A gas measuring apparatus for measuring a gas to be measured by calibrating a zero point of a gas sensor using a standard gas, a standard gas generating means for supplying the standard gas, a gas to be measured and the standard gas and switching means for selecting one of the, the output of the switching means is connected, the measurement gas and the standard gas with a temperature sensor and a humidity sensor its
The temperature component and the influence component based on the temperature difference and the humidity difference between the measured gas and the standard gas are calculated by measuring the temperature and the humidity , respectively, and the offset component of the gas sensor and the influence component are calculated by the gas sensor. A gas measuring device comprising: gas measuring means for subtracting from an output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31958993A JP3227684B2 (en) | 1993-12-20 | 1993-12-20 | Gas measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31958993A JP3227684B2 (en) | 1993-12-20 | 1993-12-20 | Gas measurement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07174673A JPH07174673A (en) | 1995-07-14 |
| JP3227684B2 true JP3227684B2 (en) | 2001-11-12 |
Family
ID=18111960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31958993A Expired - Fee Related JP3227684B2 (en) | 1993-12-20 | 1993-12-20 | Gas measurement device |
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| Country | Link |
|---|---|
| JP (1) | JP3227684B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103045A (en) * | 2011-01-20 | 2011-06-22 | 马鞍山钢铁股份有限公司 | Constant speed mechanical water sampling device and sampling method |
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|---|---|---|---|---|
| WO1999047905A2 (en) * | 1998-03-20 | 1999-09-23 | Cyrano Sciences, Inc. | Handheld sensing apparatus |
| JP2006300635A (en) * | 2005-04-19 | 2006-11-02 | Shimadzu Corp | Smell measuring instrument |
| JP4721341B2 (en) * | 2005-11-18 | 2011-07-13 | フィガロ技研株式会社 | Zero gas air generator for gas detector |
| JP2012047659A (en) * | 2010-08-30 | 2012-03-08 | Hitachi-Ge Nuclear Energy Ltd | Hydrogen concentration measurement apparatus with humidity correction function |
| JP5921845B2 (en) * | 2011-10-03 | 2016-05-24 | 理研計器株式会社 | Sensitivity correction method for hot-wire semiconductor gas sensor and portable gas detector |
| CN102749422B (en) * | 2012-07-16 | 2015-01-21 | 北京雪迪龙科技股份有限公司 | Mercury standard gas generating device |
| JP6873638B2 (en) * | 2016-09-23 | 2021-05-19 | 太陽誘電株式会社 | Gas sensor and gas detection method |
| WO2019187671A1 (en) * | 2018-03-29 | 2019-10-03 | 太陽誘電株式会社 | Sensing system, information processing device, program, and information collection method |
| WO2020065983A1 (en) * | 2018-09-28 | 2020-04-02 | 日本電気株式会社 | Information processing device, control method, and program |
| JP7211885B2 (en) * | 2019-04-22 | 2023-01-24 | 太陽誘電株式会社 | Arithmetic device, arithmetic method and gas detection system |
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-
1993
- 1993-12-20 JP JP31958993A patent/JP3227684B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103045A (en) * | 2011-01-20 | 2011-06-22 | 马鞍山钢铁股份有限公司 | Constant speed mechanical water sampling device and sampling method |
| CN102103045B (en) * | 2011-01-20 | 2012-09-05 | 马鞍山钢铁股份有限公司 | Constant speed mechanical water sampling device and sampling method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07174673A (en) | 1995-07-14 |
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