JPS62850A - Oxygen concentration detector - Google Patents
Oxygen concentration detectorInfo
- Publication number
- JPS62850A JPS62850A JP60141273A JP14127385A JPS62850A JP S62850 A JPS62850 A JP S62850A JP 60141273 A JP60141273 A JP 60141273A JP 14127385 A JP14127385 A JP 14127385A JP S62850 A JPS62850 A JP S62850A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- resistor
- oxygen concn
- sensor
- oxygen concentration
- 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
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 18
- 239000001301 oxygen Substances 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims description 6
- 239000007784 solid electrolyte Substances 0.000 claims description 5
- 230000010356 wave oscillation Effects 0.000 abstract description 4
- 239000003792 electrolyte Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、酸素濃度検出装置に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to an oxygen concentration detection device.
（従来の技術）
従来、酸素濃度の検出方法として限界電流型酸素センサ
を眉いる方法がある。しかし、この限界電流型酸素濃度
センサは、ガス成分、センサ温度あるいはセンサの構造
によって印加電圧きくなるという間頚がある。(Prior Art) Conventionally, as a method for detecting oxygen concentration, there is a method using a limiting current type oxygen sensor. However, this limiting current type oxygen concentration sensor has a drawback in that the applied voltage varies depending on gas components, sensor temperature, or sensor structure.
本発明は、上記のｒＩＪｍを解消することを目的とす、
るもので、以下図例に基づき具体的に説明する。The present invention aims to eliminate the above rIJm,
This will be explained in detail below based on the illustrated example.
（実施例）
第１図において、（１）は多孔質セラミック、（２）は
固体電解質センサ、（３Ｊは電流検出ｍ抵抗１（４）は
積分増幅回路、（５）は整流回路、（６）は正弦波発振
回路、（７）は直流電圧計である。(Example) In Fig. 1, (1) is a porous ceramic, (2) is a solid electrolyte sensor, (3J is a current detection m resistor 1 (4) is an integral amplifier circuit, (5) is a rectifier circuit, (6) is a ) is a sine wave oscillation circuit, and (7) is a DC voltmeter.
正弦波発振回路（６）の出力を整流回路（５）で全波整
流し）第２図（ａ）に示すような連続的に変化する電圧
Ｖを得、これを上記センサ（２）に印加する。これによ
り上記抵抗（３）を流れる電流１ａ、ｌｂ、ｌｃは酸素
濃度ａ％、ｂ％、Ｃ％に対応して第２図（ｂ）のａ、ｂ
、ａのような電圧電流特性を示す。また、上記抵抗（３
）の両端間電圧は、第２図（ａ）ａ、ｂ、ａに示すよう
に、酸素濃度に対応して電圧変化率の緩い領域が異なる
歪波となる。The output of the sine wave oscillation circuit (6) is full-wave rectified by the rectifier circuit (5) to obtain a continuously changing voltage V as shown in Figure 2 (a), and this is applied to the sensor (2). do. As a result, the currents 1a, lb, and lc flowing through the resistor (3) correspond to the oxygen concentrations a%, b%, and C% in FIG. 2(b).
, a shows voltage-current characteristics. In addition, the above resistance (3
) becomes a distorted wave whose range of slow voltage change varies depending on the oxygen concentration, as shown in FIG. 2(a) a, b, and a.
この抵抗（３）の両端間電圧を積分増幅回路（４）で積
分することにより、酸素濃度に対応して電位が異なる直
流電流が得られ、この直流電圧が直流電圧計（７）で検
出される。（第２図（ｄ） ）（発明の効果）
以上のように、本発明に係る酸素濃度検出装置は、印加
電圧が連続的に変化する固体電解質センサの電流検出用
抵抗の両端間電圧を積分することにより酸素濃度を測定
するので、上記センサのアクティブレンジ全域にわたり
、回路抵抗などの設定変更をせずに一定の条件で、連続
して酸素濃度を正確に測定できる等の効果を得られる。By integrating the voltage across this resistor (3) with an integral amplifier circuit (4), a DC current with a different potential depending on the oxygen concentration is obtained, and this DC voltage is detected by a DC voltmeter (7). . (Figure 2(d)) (Effects of the Invention) As described above, the oxygen concentration detection device according to the present invention integrates the voltage across the current detection resistor of the solid electrolyte sensor in which the applied voltage changes continuously. Since the oxygen concentration is measured by doing this, it is possible to obtain effects such as being able to accurately measure the oxygen concentration continuously over the entire active range of the sensor under constant conditions without changing settings such as circuit resistance.
また、本発明に係る酸素濃度検出装置は、連続的に電圧
が変化する電源と、この電源の電圧を印加される固体電
解質センサと、このセンサの電流を検出するための抵抗
と、この抵抗の両端間電圧を積分する積分回路とを設け
るに過ぎないので、上述の効果に加えて、構成を簡単に
できる等の効果を得ることができる。Further, the oxygen concentration detection device according to the present invention includes a power source whose voltage changes continuously, a solid electrolyte sensor to which the voltage of this power source is applied, a resistor for detecting the current of this sensor, and a resistor of this resistor. Since only an integrating circuit for integrating the voltage between both ends is provided, in addition to the above-mentioned effects, it is possible to obtain effects such as simplifying the configuration.
第１図は本発明の一実施例を示す回路図、第２図は第１
図における各部の出力波形を示したものである。
（２）・・・固体電解質センサ
（３）・・・抵抗
（４）・・・積分回路
（６）・・・正弦波発振回路Fig. 1 is a circuit diagram showing one embodiment of the present invention, and Fig. 2 is a circuit diagram showing an embodiment of the present invention.
This figure shows the output waveforms of each part in the figure. (2)...Solid electrolyte sensor (3)...Resistor (4)...Integrator circuit (6)...Sine wave oscillation circuit
Claims (1)
れる固体電解質センサと、このセンサの電流を検出する
ための抵抗と、この抵抗の両端間電圧を積分する積分回
路とを設けたことを特徴とする酸素濃度検出装置。A power supply whose voltage changes continuously, a solid electrolyte sensor to which this power supply voltage is applied, a resistor for detecting the current of this sensor, and an integrating circuit that integrates the voltage across this resistor are provided. An oxygen concentration detection device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60141273A JPS62850A (en) | 1985-06-26 | 1985-06-26 | Oxygen concentration detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60141273A JPS62850A (en) | 1985-06-26 | 1985-06-26 | Oxygen concentration detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62850A true JPS62850A (en) | 1987-01-06 |
| JPH0535824B2 JPH0535824B2 (en) | 1993-05-27 |
Family
ID=15288054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60141273A Granted JPS62850A (en) | 1985-06-26 | 1985-06-26 | Oxygen concentration detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62850A (en) |
-
1985
- 1985-06-26 JP JP60141273A patent/JPS62850A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0535824B2 (en) | 1993-05-27 |
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