JPH0217650U - - Google Patents
Info
- Publication number
- JPH0217650U JPH0217650U JP9661188U JP9661188U JPH0217650U JP H0217650 U JPH0217650 U JP H0217650U JP 9661188 U JP9661188 U JP 9661188U JP 9661188 U JP9661188 U JP 9661188U JP H0217650 U JPH0217650 U JP H0217650U
- Authority
- JP
- Japan
- Prior art keywords
- alcohol concentration
- mhz
- detects
- electrodes
- 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.)
- Pending
Links
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000446 fuel Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
第１図は本考案第１実施例のアルコール濃度検
出装置を示す回路図、第２図は第１実施例装置の
センサ部の構造を示す断面図、第３図は第１実施
例装置の信号の波形を示すタイムチヤート、第４
図は第１実施例装置の発振周波数と損失角並びに
誘電率との関係を示すグラフ、第５図は第１実施
例の電圧―アルコール濃度特性を示すグラフ、第
６図は実施他例のアルコール濃度検出装置を示す
回路図である。
１０…アルコール濃度センサ（センサ部）、１
１…内電極、１２…外電極、２０…発振回路。
Fig. 1 is a circuit diagram showing the alcohol concentration detection device according to the first embodiment of the present invention, Fig. 2 is a sectional view showing the structure of the sensor section of the device according to the first embodiment, and Fig. 3 is a signal diagram of the device according to the first embodiment. Time chart showing the waveform of
The figure is a graph showing the relationship between the oscillation frequency, the loss angle, and the dielectric constant of the device of the first embodiment, FIG. 5 is a graph showing the voltage-alcohol concentration characteristics of the first embodiment, and FIG. FIG. 2 is a circuit diagram showing a concentration detection device. 10...Alcohol concentration sensor (sensor part), 1
1... Inner electrode, 12... Outer electrode, 20... Oscillation circuit.
Claims (1)
を有し、この電極間の静電容量を検出するセンサ
部と、該センサ部で検出される静電容量に応じた
周波数で発振する発振回路とを備え、前記発振周
波数に基づきアルコール濃度を検出するようにし
たアルコール濃度検出装置において、 前記発振回路の発振周波数を２ＭＨｚ〜１００
ＭＨｚの範囲内に設定したことを特徴とするアル
コール濃度検出装置。[Claims for Utility Model Registration] A sensor unit that has a pair of electrodes immersed in alcohol-containing fuel and detects the capacitance between the electrodes, and a sensor unit that detects the capacitance between the electrodes, and An oscillation circuit that oscillates at a frequency, and an alcohol concentration detection device that detects alcohol concentration based on the oscillation frequency, wherein the oscillation frequency of the oscillation circuit is 2 MHz to 100 MHz.
An alcohol concentration detection device characterized in that the alcohol concentration is set within the range of MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9661188U JPH0217650U (en) | 1988-07-21 | 1988-07-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9661188U JPH0217650U (en) | 1988-07-21 | 1988-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0217650U true JPH0217650U (en) | 1990-02-05 |
Family
ID=31321624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9661188U Pending JPH0217650U (en) | 1988-07-21 | 1988-07-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0217650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0432756A (en) * | 1990-05-30 | 1992-02-04 | Japan Electron Control Syst Co Ltd | Electrostatic capacity type instrument for measuring concentration of alcohol |
-
1988
- 1988-07-21 JP JP9661188U patent/JPH0217650U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0432756A (en) * | 1990-05-30 | 1992-02-04 | Japan Electron Control Syst Co Ltd | Electrostatic capacity type instrument for measuring concentration of alcohol |
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