JPS62126765U - - Google Patents
Info
- Publication number
- JPS62126765U JPS62126765U JP1349586U JP1349586U JPS62126765U JP S62126765 U JPS62126765 U JP S62126765U JP 1349586 U JP1349586 U JP 1349586U JP 1349586 U JP1349586 U JP 1349586U JP S62126765 U JPS62126765 U JP S62126765U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- electrodes
- oxygen
- limiting current
- water
- 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.)
- Pending
Links
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910002076 stabilized zirconia Inorganic materials 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 3
- 238000000354 decomposition reaction Methods 0.000 claims 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 239000007784 solid electrolyte Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
Description
第１図は２段プラトー領域を有する本考案の原
理的プラトー特性線図、第２図は本考案の一実施
例の概略構成図、第３図は第２図における出力電
流と水蒸気濃度との関係線図、第４図はジルコニ
ア酸素センサの原理説明図、第５図は限界電流形
酸素センサの原理説明図、第６図は第５図の限界
電流のプラトー特性例を示す線図である。
１：安定化ジルコニア、２：電極、３：蓋、４
：微小拡散孔、１０：演算回路、１２：センサ部
、１３：電子回路部。
Fig. 1 is a theoretical plateau characteristic diagram of the present invention having a two-stage plateau region, Fig. 2 is a schematic configuration diagram of an embodiment of the invention, and Fig. 3 is a diagram showing the relationship between the output current and water vapor concentration in Fig. 2. Relationship diagram, Figure 4 is a diagram explaining the principle of a zirconia oxygen sensor, Figure 5 is a diagram explaining the principle of a limiting current type oxygen sensor, and Figure 6 is a diagram showing an example of the plateau characteristic of the limiting current in Figure 5. . 1: Stabilized zirconia, 2: Electrode, 3: Lid, 4
: minute diffusion hole, 10: arithmetic circuit, 12: sensor section, 13: electronic circuit section.
Claims (1)
安定化ジルコニアと、この安定化ジルコニアの両
面に設けられた２個の電極と、前記電極のいづれ
か一方を覆い、かつ微小拡散孔が設けられた蓋と
を有し、前記電極間に印加される電圧の所定の領
域で生じる限界電流が前記電極周辺の酸素濃度に
比例する限界電流形酸素センサにおいて、前記限
界電流が酸素のみに依存するような水の理論分解
電圧より小さい電圧を第１電圧と、酸素と水蒸気
とに依存するような前記水の理論分解電圧より大
きい電圧を第２電圧とし、前記第１電圧と第２電
圧とを交互に切換えて前記電極間に印加し、前記
第１および第２電圧によるそれぞれの出力を保持
し演算して乾きガスベースまたは乾きガスと湿り
ガスベースの酸素濃度を検出する演算回路を備え
たことを特徴とする酸素センサ。 Stabilized zirconia that is a solid electrolyte with good oxygen ion conductivity, two electrodes provided on both sides of the stabilized zirconia, and a lid that covers one of the electrodes and is provided with micro diffusion holes. and a limiting current type oxygen sensor in which the limiting current generated in a predetermined region of the voltage applied between the electrodes is proportional to the oxygen concentration around the electrodes, wherein the limiting current is dependent only on oxygen. The first voltage is a voltage smaller than the theoretical decomposition voltage of the water, and the second voltage is a voltage larger than the theoretical decomposition voltage of the water, which depends on oxygen and water vapor, and the first voltage and the second voltage are alternately switched. is applied between the electrodes, holds and calculates respective outputs of the first and second voltages, and detects the oxygen concentration on a dry gas basis or on a dry gas and wet gas basis. oxygen sensor.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1349586U JPS62126765U (en) | 1986-02-01 | 1986-02-01 | |
| US07/008,655 US4762605A (en) | 1986-02-01 | 1987-01-30 | Oxygen sensor |
| DE19873702838 DE3702838A1 (en) | 1986-02-01 | 1987-01-30 | OXYGEN SENSOR AND METHOD FOR THE PRODUCTION THEREOF |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1349586U JPS62126765U (en) | 1986-02-01 | 1986-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62126765U true JPS62126765U (en) | 1987-08-11 |
Family
ID=30802605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1349586U Pending JPS62126765U (en) | 1986-02-01 | 1986-02-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62126765U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59217151A (en) * | 1983-05-26 | 1984-12-07 | Toyota Central Res & Dev Lab Inc | Detector for concentration of plurality of gas components using polarography type sensor |
| JPS6091251A (en) * | 1983-10-26 | 1985-05-22 | Hitachi Ltd | Air-fuel ratio sensor |
-
1986
- 1986-02-01 JP JP1349586U patent/JPS62126765U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59217151A (en) * | 1983-05-26 | 1984-12-07 | Toyota Central Res & Dev Lab Inc | Detector for concentration of plurality of gas components using polarography type sensor |
| JPS6091251A (en) * | 1983-10-26 | 1985-05-22 | Hitachi Ltd | Air-fuel ratio sensor |
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