JPH088444Y2 - Oil detection sensor - Google Patents
Oil detection sensorInfo
- Publication number
- JPH088444Y2 JPH088444Y2 JP13160589U JP13160589U JPH088444Y2 JP H088444 Y2 JPH088444 Y2 JP H088444Y2 JP 13160589 U JP13160589 U JP 13160589U JP 13160589 U JP13160589 U JP 13160589U JP H088444 Y2 JPH088444 Y2 JP H088444Y2
- Authority
- JP
- Japan
- Prior art keywords
- detection sensor
- oil
- sensor
- oil detection
- silicon rubber
- 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.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は油検知センサーに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an oil detection sensor.
油検知センサーとしては、従来、例えば、第５図側面
図及び第６図縦断面図に示すように、円筒状セラミック
ス母材01がカーボン入りシリコンゴム製薄膜の油検知部
02で被覆されるとともに、油検知部02の先端部、基端部
がそれぞれ導電性接着剤03によりセラミックス母材01に
固着され、更に導電性接着剤03にそれぞれリード線04が
接続されたものが知られている。Conventionally, as an oil detection sensor, for example, as shown in a side view of FIG. 5 and a vertical sectional view of FIG. 6, a cylindrical ceramic base material 01 is an oil detection part of a silicon rubber thin film containing carbon.
In addition to being covered with 02, the tip end and the base end of the oil detecting portion 02 are fixed to the ceramic base material 01 by the conductive adhesive 03, and the lead wire 04 is connected to the conductive adhesive 03. It has been known.
この種のセンサーでは、油05が付着した油検知部02が
膨張して、その電気抵抗が増加することにより、油05を
検出している。In this type of sensor, the oil detection unit 02 to which the oil 05 adheres expands and its electric resistance increases, so that the oil 05 is detected.
しかしながら、このような構造では、下記のような欠
点がある。However, such a structure has the following drawbacks.
（１）油検知部02の線膨張係数が大きく、抵抗変化率も
大きいので、温度上昇の影響に災いされ、従って微少な
油の検知が困難である。(1) Since the oil detection unit 02 has a large coefficient of linear expansion and a large rate of resistance change, it suffers from the influence of a temperature rise, and thus it is difficult to detect a minute amount of oil.
（２）微少な油の検知が困難なので、気化ガス状態で油
を検知することができず、従って漏油検知が遅い。(2) Since it is difficult to detect a minute amount of oil, the oil cannot be detected in the vaporized gas state, and therefore the oil leakage detection is slow.
（３）上記（１）の対策として、センサーのほかに温度
補正用アンプを併設しなければならないので、センサー
一式が大型化する。(3) As a measure against the above (1), since a temperature correction amplifier must be installed in addition to the sensor, the size of the sensor set becomes large.
本考案は、このような事情に鑑みて提案されたもの
で、センサーが温度変化の影響を受けずに、かつ気化ガ
ス程度の微少量の油を早期に検知することができる、高
性能な油検知センサーを提供することを目的とする。The present invention has been proposed in view of such circumstances, and is a high-performance oil capable of early detection of a small amount of oil such as vaporized gas without the sensor being affected by temperature changes. The purpose is to provide a detection sensor.
そのために本考案は、セラミックス基板上に付設され
たカーボン混入シリコンラバー型抵抗変換方式の油検知
用センサーと、上記セラミックス基板上に上記油検知用
センサーに適宜間隔で並設されそれと同一材質，寸法で
形成されるとともに表面がシリコンラバーで覆われた温
度補正用センサーとを具えたことを特徴とする。To this end, the present invention provides a carbon-mixed silicon rubber type resistance conversion type oil detection sensor attached on a ceramic substrate and the same oil detection sensor on the ceramic substrate arranged at appropriate intervals in the same material and size. And a temperature correction sensor whose surface is covered with silicon rubber.
油検知用センサーが検出した全抵抗変化から、温度補
正用センターが検出した温度抵抗変化が、ブリッジ回路
により電気的に差引かれるので、迅速かつ正確に油検知
ができるとともに、油検知センサーの構造も簡素化でき
る。The change in temperature resistance detected by the temperature correction center is electrically subtracted from the change in total resistance detected by the oil detection sensor by the bridge circuit, enabling quick and accurate oil detection and the structure of the oil detection sensor. Can be simplified.
本考案の一実施例を図面について説明すると、第５〜
６図の同一の符番はそれぞれ同図と同一の部材を示し、
まず、第１図斜視図，第２図及び第３図縦断面図におい
て、１は温度膨張度の少ないセラミックスで形成された
セラミックス基板、２はセラミックス基板１の上面左端
寄りにそれに沿って導電性カーボン入りシリコンラバー
３が薄膜帯状に接着された油検知用センサー、４はセラ
ミックス基板１の上面右端寄りにそれに沿ってカーボン
入りシリコンラバー３と同一材質，形状のカーボン入り
シリコンラバー５が薄膜帯状に接着されるとともに、そ
の表面がシリコンラバー６により被覆された温度補正用
センサーである。An embodiment of the present invention will be described with reference to the drawings.
The same reference numerals in FIG. 6 indicate the same members as those in FIG.
First, in the perspective views of FIG. 1, FIG. 2, and FIG. 3, 1 is a ceramics substrate formed of ceramics having a low temperature expansion coefficient, and 2 is conductive along the left end of the upper surface of the ceramics substrate 1. An oil detection sensor 4 in which a carbon-containing silicon rubber 3 is adhered in a thin film band is formed on the right side of the upper surface of the ceramic substrate 1 along which a carbon-containing silicon rubber 5 of the same material and shape is formed into a thin film band. It is a temperature correction sensor that is adhered and the surface of which is covered with silicon rubber 6.
7,8はそれぞれセラミックス基板１の上面後端部左右
に付着されるとともに、油検知用センサー２の後端，温
度補正用センサー４の後端に接続する蒸着端子、９はセ
ラミックス基板１の上面中心線部にＴ字状に付着される
とともに、左右端部がそれぞれ油検知用センサー2,温度
補正用センサー４の前端部に接続する蒸着端子、10はそ
れぞれにはんだ11を介して蒸着端子7,8,9に接続された
リード線、12は油検知用センサー2,温度補正用センサー
４等が協働して形成するセンサー機構、13は油気化ガス
である。7 and 8 are attached to the left and right sides of the rear end of the upper surface of the ceramic substrate 1, and vapor deposition terminals are connected to the rear end of the oil detection sensor 2 and the rear end of the temperature correction sensor 4, and 9 is the upper surface of the ceramic substrate 1. The vapor deposition terminals are attached to the center line portion in a T shape, and the left and right end portions are connected to the front end portions of the oil detection sensor 2 and the temperature correction sensor 4, respectively, and 10 are vapor deposition terminals 7 via solder 11 respectively. , 8 and 9, lead wires connected to each other, 12 a sensor mechanism formed by the oil detection sensor 2, the temperature correction sensor 4 and the like in cooperation, and 13 an oil vaporized gas.
次に、第４図ブリッジ回路図において、14は対辺に挿
入された固定抵抗15により回路的に抵抗バランスされた
油検知用センサー抵抗で、第１図の油検知用センサー２
と同一構造、16は対辺に挿入された固定抵抗17により回
路的に抵抗バランスされた温度補正用センサー抵抗で、
第１図の温度補正用センサー４と同一構造、18は固定抵
抗15と17との間に挿入された微調整用可変抵抗、19は回
路に一定の電圧を印加するブリッジ電源、20は油付着の
際に、ブリッジに生ずる抵抗変化分に基づく出力であ
る。Next, in the bridge circuit diagram of FIG. 4, 14 is an oil detection sensor resistance circuit-balanced by a fixed resistor 15 inserted on the opposite side, and the oil detection sensor 2 of FIG.
The same structure as, 16 is a temperature-compensating sensor resistor whose circuit resistance is balanced by a fixed resistor 17 inserted on the opposite side.
The same structure as the temperature compensating sensor 4 of FIG. 1, 18 is a variable resistor for fine adjustment inserted between fixed resistors 15 and 17, 19 is a bridge power supply for applying a constant voltage to the circuit, and 20 is oil adhesion. In this case, the output is based on the resistance change generated in the bridge.
このような構造において、第２図に示すように、油05
が油検知用センサー２上に付着すると、カーボン入りシ
リコンラバー３が膨張してカーボン粒子間の距離が増大
するので、電気抵抗変化が増加する。一方、温度補正用
センサー４では、第３図に示すように、カーボン入りシ
リコンラバー５はシリコンラバー６により被覆されてい
るので、カーボン入りシリコンラバー５には付着油05が
浸透せず、従って、その影響は受けないが、温度変化に
対しては、カーボン入りシリコンラバー３の温度による
膨張分と同一膨張度を示す。In such a structure, as shown in FIG.
When is attached to the oil detection sensor 2, the silicon rubber 3 containing carbon expands and the distance between the carbon particles increases, so that the electrical resistance change increases. On the other hand, in the temperature correction sensor 4, as shown in FIG. 3, the silicon rubber 5 containing carbon is covered with the silicon rubber 6, so that the adhered oil 05 does not penetrate into the silicon rubber 5 containing carbon. Although not affected by this, it shows the same degree of expansion as the amount of expansion due to the temperature of the carbon-containing silicon rubber 3 with respect to temperature changes.
そこで、第４図に示すように、ブリッジ回路により、
油検知用センサー２が検出した全抵抗変化から温度補正
用センサー４が検出した温度抵抗変化を差引くことによ
り、油05等を正確にかつ迅速に検出することができる。Therefore, as shown in FIG.
By subtracting the temperature resistance change detected by the temperature correction sensor 4 from the total resistance change detected by the oil detection sensor 2, the oil 05 and the like can be detected accurately and quickly.
このような構造によれば、下記作用及び効果が奏せら
れる。With such a structure, the following actions and effects are exhibited.
（１）油検知用センサーに温度補正用センサーが並設さ
れるので、温度変化の影響を受けることなく、油付着が
迅速に検出できるようになる。(1) Since the temperature detection sensor is arranged in parallel with the oil detection sensor, oil adhesion can be detected quickly without being affected by temperature changes.
（２）油検知用センサー及び温度補正用センサーに接続
されたブリッジ回路により各センサー抵抗のバランスが
微調整できるので、油の気化ガス成分も検知できるよう
になり、従って精度が向上する。(2) Since the balance of each sensor resistance can be finely adjusted by the bridge circuit connected to the oil detection sensor and the temperature correction sensor, the vaporized gas component of oil can also be detected, and therefore the accuracy is improved.
（３）センサーそのものの温度補正用アンプが不要とな
るので、センサーの構造が小型化する。(3) Since the temperature correction amplifier of the sensor itself is not required, the structure of the sensor is downsized.
要するに本考案によれば、セラミックス基板上に付設
されたカーボン混入シリコンラバー型抵抗変換方式の油
検知用センサーと、上記セラミックス基板上に上記油検
知用センサーに適宜間隔で並設されそれと同一材質，寸
法で形成されるとともに表面がシリコンラバーで覆われ
た温度補正用センサーとを具えたことによりセンサーが
温度変化の影響を受けずに、かつ気化ガス程度の微少量
の油を早期に検知することができる、高性能な油検知セ
ンサーを得るから、本考案は産業上極めて有益なもので
ある。In short, according to the present invention, a carbon-mixed silicon rubber type resistance conversion type oil detection sensor attached on a ceramic substrate and the same oil detection sensor arranged on the ceramic substrate at appropriate intervals, It has a temperature compensation sensor that is dimensionally formed and the surface is covered with silicon rubber, so that the sensor is not affected by temperature changes and can detect a small amount of oil such as vaporized gas early. The present invention is extremely useful in industry because it provides a high-performance oil detection sensor that can be used.
第１図は本考案のセンサー機構の一実施例を示す斜視
図、第２図，第３図はそれぞれ第１図のII−II,III−II
Iに沿った縦断面図、第４図は本考案のブリッジ回路部
分を示す回路図である。 第５図，第６図はそれぞれ公知の油検知センサーを示す
側面部，縦断面図である。 １…セラミックス基板、２…油検知用センサー、３…カ
ーボン入りシリコンラバー、４…温度補正用センサー、
５…カーボン入りシリコンラバー、６…シリコンラバ
ー、7,8,9…蒸着端子、10…リード線、11…はんだ、12
…センサー機構、13…油気化ガス、14…油検知用センサ
ー抵抗、15…固定抵抗、16…温度補正用センサー抵抗、
17…固定抵抗、18…可変抵抗、19…ブリッジ電源、20…
出力、05…油、FIG. 1 is a perspective view showing an embodiment of the sensor mechanism of the present invention, and FIGS. 2 and 3 are II-II and III-II of FIG. 1, respectively.
FIG. 4 is a longitudinal sectional view taken along the line I, and FIG. 4 is a circuit diagram showing a bridge circuit portion of the present invention. 5 and 6 are a side view and a longitudinal sectional view showing a known oil detection sensor, respectively. 1 ... Ceramic substrate, 2 ... Oil detection sensor, 3 ... Carbon rubber containing carbon, 4 ... Temperature correction sensor,
5 ... Silicon rubber with carbon, 6 ... Silicon rubber, 7,8,9 ... Vapor deposition terminal, 10 ... Lead wire, 11 ... Solder, 12
… Sensor mechanism, 13… Oil vaporized gas, 14… Sensor resistance for oil detection, 15… Fixed resistance, 16… Sensor resistance for temperature compensation,
17 ... Fixed resistance, 18 ... Variable resistance, 19 ... Bridge power supply, 20 ...
Output, 05 ... oil,
───────────────────────────────────────────────────── フロントページの続き (72)考案者 谷田部 弘 兵庫県高砂市荒井町新浜２丁目８番25号 高菱エンジニアリング株式会社内 (56)参考文献 特開 昭62−186060（ＪＰ，Ａ) 特開 昭56−119836（ＪＰ，Ａ) 特開 昭48−37195（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Yatabe 2-8-25 Niihama, Arai-cho, Takasago, Hyogo Prefecture Takahishi Engineering Co., Ltd. (56) Reference JP-A-62-186060 (JP, A) JP 56-119836 (JP, A) JP-A-48-37195 (JP, A)
Claims (1)
混入シリコンラバー型抵抗変換方式の油検知用センサー
と、上記セラミックス基板上に上記油検知用センサーに
適宜間隔で並設されそれと同一材質，寸法で形成される
とともに表面がシリコンラバーで覆われた温度補正用セ
ンサーとを具えたことを特徴とする油検知センサー。1. A carbon-mixed silicon rubber type resistance conversion type oil detection sensor provided on a ceramic substrate, and the oil detection sensor provided on the ceramic substrate in parallel at appropriate intervals with the same material and size. An oil detection sensor, characterized in that it has a temperature correction sensor that is formed and the surface is covered with silicon rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13160589U JPH088444Y2 (en) | 1989-11-10 | 1989-11-10 | Oil detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13160589U JPH088444Y2 (en) | 1989-11-10 | 1989-11-10 | Oil detection sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0370351U JPH0370351U (en) | 1991-07-15 |
| JPH088444Y2 true JPH088444Y2 (en) | 1996-03-06 |
Family
ID=31679104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13160589U Expired - Lifetime JPH088444Y2 (en) | 1989-11-10 | 1989-11-10 | Oil detection sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH088444Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005201847A (en) * | 2004-01-19 | 2005-07-28 | Mitsubishi Cable Ind Ltd | Sensor for detecting organic liquid of low-molecular weight |
| JP2009518630A (en) * | 2005-12-03 | 2009-05-07 | タイコ・サーマル・コントロールズ・エルエルシー | Sensor for organic liquid detection |
| JP2010279663A (en) * | 2009-06-03 | 2010-12-16 | Mikio Nagahisa | Denture washing container |
-
1989
- 1989-11-10 JP JP13160589U patent/JPH088444Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0370351U (en) | 1991-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |