JPH0579935A - Measuring and changeover device for system guiding pressure - Google Patents
Measuring and changeover device for system guiding pressureInfo
- Publication number
- JPH0579935A JPH0579935A JP5788592A JP5788592A JPH0579935A JP H0579935 A JPH0579935 A JP H0579935A JP 5788592 A JP5788592 A JP 5788592A JP 5788592 A JP5788592 A JP 5788592A JP H0579935 A JPH0579935 A JP H0579935A
- Authority
- JP
- Japan
- Prior art keywords
- measuring
- switching device
- hollow chamber
- pressure
- casing part
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
- G01L9/0002—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using variations in ohmic resistance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/28—Structurally-combined illuminating devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0082—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means
- G01L9/0083—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means using variations in ohmic resistance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、信号を直接的又は間接
的に発生又は変換する電気的及び電子的な素子を受容す
る少なくとも１つの第１のケーシング部分と、該第１の
ケーシング部分と一緒に中空室を形成する少なくとも１
つの第２のケーシング部分と、前記素子によって生ぜし
められる信号を送る伝達装置とを有している形式の、流
体の圧力下にある系内に使用するための測定・切り換え
装置から出発する。本発明は、特に、高圧条件で使用す
るためのこのような測定・切り換え装置に関する。本発
明による測定・切り換え装置は、例えば、オイル圧−制
御系、自動車又は類似のものの液圧式ブレーキ回路に取
り付けることができる。BACKGROUND OF THE INVENTION The present invention relates to at least one first casing part for receiving electrical and electronic elements which directly or indirectly generate or convert signals, and said first casing part. At least one forming together a hollow chamber
Starting from a measuring and switching device for use in a system under the pressure of a fluid of the type having two second casing parts and a transmission device for transmitting the signal produced by said element. The invention relates in particular to such a measuring and switching device for use in high pressure conditions. The measuring and switching device according to the invention can be mounted, for example, in a hydraulic brake circuit of an oil pressure-control system, a motor vehicle or the like.
【０００２】[0002]
【従来の技術】種々の形式の測定・切り換え装置が公知
であり、該測定・切り換え装置は検出された物理的大き
さに相応する電気信号を発生し、あるいは電気信号に変
換する。物理的大きさを検出する、又は電気信号に変換
するためのそれぞれ異なる方法は、前記の測定・切り換
え装置に基づいている。要するにこのような測定・切り
換え装置は例えば、圧力センサ又は圧力スイッチとして
使用されることができ、該圧力センサ又は圧力スイッチ
は、圧電抵抗の又は圧電の素子、容量的な圧力フィーラ
又は抵抗体を備えた半導体ベースに圧力に敏感な素子を
有しており、該素子が圧力変化時に回転又は押される。
さらに、このような測定・切り換え装置を温度フィーラ
又は温度スイッチとして嵌め込むことができる。Various types of measuring and switching devices are known, which generate or convert an electrical signal corresponding to the detected physical magnitude. Different methods for detecting the physical magnitude or converting it into an electrical signal are based on the measuring and switching device described above. In summary, such a measuring and switching device can be used, for example, as a pressure sensor or a pressure switch, which pressure sensor or pressure switch comprises a piezoresistive or piezoelectric element, a capacitive pressure feeler or a resistor. The semiconductor base has a pressure-sensitive element which is rotated or pushed when the pressure changes.
Furthermore, such a measuring / switching device can be fitted as a temperature feeler or a temperature switch.
【０００３】このような測定・切り換え装置がオイル圧
−制御系又は自動車の液圧式ブレーキ回路内に嵌め込ま
れると、測定個所又は取付け個所のシール性、もしくは
破壊又は漏れに対する安全性に関して著しく高い要求が
課せられる。このような測定・切り換え装置は、少なく
とも、圧力媒体を案内する導管の開口内に取り付けられ
ており、さらに片側で圧力媒体と接続される。この接続
は、圧力媒体と、規定の物理的大きさに敏感な素子又は
ケーシング部分との間で直接行われるか、測定・切り換
え装置における通路を介して行われる。同時に、このよ
うな測定・切り換え装置もしくはそのケーシングは、周
囲、例えば雰囲気と接続される。圧力を案内する媒体と
接続される素子の非気密性又は破壊は制御系又はブレー
キ系の故障を導くので、測定・切り換え装置において、
もしくはこの測定・切り換え装置の、圧力媒体を案内す
る導管への接続部において、安全技術的に高い要求が課
せられる。When such a measuring / switching device is fitted in an oil pressure-control system or in a hydraulic brake circuit of a motor vehicle, there are remarkably high requirements regarding the sealing property of the measuring point or the mounting point or the safety against breakage or leakage. Imposed. Such a measuring and switching device is mounted at least in the opening of the conduit for guiding the pressure medium and is further connected on one side with the pressure medium. This connection is made either directly between the pressure medium and the element or the casing part which is sensitive to the specified physical size, or via a passage in the measuring and switching device. At the same time, such a measuring and switching device or its casing is connected to the surroundings, for example the atmosphere. In the measurement / switching device, the non-airtightness or the destruction of the element connected to the medium for guiding the pressure leads to the failure of the control system or the brake system.
Alternatively, at the connection of the measuring and switching device to the conduit for guiding the pressure medium, high safety requirements are imposed.
【０００４】このような安全に対する要求を十分に満た
すために、不経済かつ高価な構成が公知であり、この構
成は、例えば、測定・切り換え装置をカプセル化し、又
はこの測定・切り換え装置と圧力媒体を案内する導管と
の接続を複雑にする。In order to fully meet such safety requirements, uneconomical and expensive arrangements are known, which enclose, for example, the measuring and switching device or the measuring and switching device and the pressure medium. It complicates the connection with the conduit that guides.
【０００５】[0005]
【発明が解決しようとする課題】本発明の課題は、簡単
かつコストの安い形式で高圧条件のための測定・切り換
え装置を提供し、圧力を案内する系への取付けが、不経
済な構成及び付加的な構成なしに、漏れ、破壊などに対
する安全性に関する高い要求を満たすことができるよう
にすることである。SUMMARY OF THE INVENTION The object of the invention is to provide a measuring and switching device for high pressure conditions in a simple and cost-effective manner, which is uneconomical to mount in a pressure guiding system. It is to be able to meet high requirements regarding safety against leakage, destruction, etc. without additional configuration.
【０００６】[0006]
【課題を解決するための手段】前述の課題を解決するた
めに講じた本発明の手段は、中空室を形成するケーシン
グ部分が、流体を案内する通路内に配置されており、さ
らに中空室が周囲に対してシールされており、さらに、
前記素子及び伝達装置の少なくとも一部分が中空室内に
配置されていることにある。Means for Solving the Problems In the means for solving the above-mentioned problems according to the present invention, a casing portion forming a hollow chamber is arranged in a passage for guiding a fluid. It is sealed against the surroundings, and in addition,
At least part of the element and the transmission device is arranged in the hollow chamber.
【０００７】[0007]
【発明の効果】本発明によって得られる利点は、測定・
切り換え装置を圧力下にある系に取付ける際に生じる漏
れ又は破壊に対する安全構造を、壁部を通る線材の貫通
個所に限定することができるので、構成費用が安くなる
ことである。The advantages obtained by the present invention are:
The cost of construction is low, since the safety structure against leakage or breakage that occurs when the switching device is attached to the system under pressure can be limited to the point of penetration of the wire through the wall.
【０００８】[0008]
【実施例】測定・切り換え装置１０がケーシング上方部
分１１とケーシング下方部分１２とを有しており、これ
らのケーシング部分によって中空室１３が形成されてい
る。ケーシング上方部分１１の内側１４並びにケーシン
グ部分１２の内側１５は、電子的な素子１６を有する詳
しくは説明しない回路を支持している。電子的な素子
は、例えば薄膜形成技術又は厚膜形成技術で形成される
抵抗体であってもよく、この抵抗体の抵抗値は圧力に依
存して、あるいは例えば温度に依存して変化する。さら
に、電子的な素子は、信号を変換する又は信号を発生す
る素子であってもよく、該素子は有利には一緒にコンデ
ンサを形成し、このコンデンサは、ケーシング上方部分
及びケーシング下方部分が圧力に依存して変形する際に
相応の信号を発生する。別の使用分野のために、ケーシ
ング上方部分及び／又はケーシング下方部分が圧電抵抗
の、あるいは圧電の部材であってもよく、この圧電部材
が、圧力に依存する形状変化の際に信号を発生し、該信
号が電子的な素子によって増幅、調製又は変換される。
電子的な素子１６は、回路内の給電、信号変形及び信号
処理のためにも役立つ。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A measuring and switching device 10 has an upper casing part 11 and a lower casing part 12, which form a hollow chamber 13. The inner side 14 of the upper casing part 11 as well as the inner side 15 of the casing part 12 carry a circuit, which will not be described in detail, having an electronic component 16. The electronic element may be, for example, a resistor formed by a thin film forming technique or a thick film forming technique, and the resistance value of the resistor changes depending on pressure or, for example, temperature. Furthermore, the electronic element may be a signal-transducing or signal-generating element, which together preferably form a capacitor, the capacitor of which the upper casing part and the lower casing part are under pressure. A corresponding signal is generated when deforming depending on. For another field of use, the upper casing part and / or the lower casing part may be a piezoresistive or piezo member, which produces a signal during a pressure-dependent change of shape. , The signal is amplified, conditioned or converted by an electronic device.
The electronic device 16 also serves for power supply, signal transformation and signal processing in the circuit.
【０００９】電子的な素子１６もしくは回路と、電気信
号のための伝達装置として使用する、もしくは給電のた
めに使用する線材１７とが電気を導くように接続されて
いる。線材は、ケーシング上方部分１１とケーシング下
方部分１２との間を通って外方へ案内される。線材１７
を埋め込んでいるシール兼結合物質１８によって、ケー
シング上方部分とケーシング下方部分とが互いに、シー
ルされてかつ不動に結合される。このことによって、中
空室１３は周囲に対してシールされている。シール物質
又はケーシング上方部分もしくはケーシング下方部分に
よる拡散を排除又は減少するために、中空室は不活性ガ
ス又は高分子ガスを充填されている。An electronic element 16 or circuit and a wire 17 used as a transmission device for electric signals or used for power supply are connected so as to conduct electricity. The wire is guided outwardly between the upper casing part 11 and the lower casing part 12. Wire rod 17
The casing and lower part of the casing are sealed and immovably connected to one another by means of a sealing and coupling substance 18 which is embedded in the casing. As a result, the hollow chamber 13 is sealed from the surroundings. The hollow chamber is filled with an inert gas or a polymeric gas in order to eliminate or reduce the sealing substance or the diffusion by the upper casing part or the lower casing part.
【００１０】測定・切り換え装置１０は全体が、圧力媒
体を案内する通路内に嵌め込まれている。信号伝達をさ
らに継続するために、線材１７のみが外方へ案内される
ようにする。このため、圧力を案内する系においては、
信号伝達のための線材の貫通個所を除いて、外方への漏
れ又は破裂に関する前記系の安全性のための別の構成は
必要でない。測定・切り換え装置において非気密性又は
破壊が生じると、中空室１３で規定された容積が流体で
満たされるが、しかし例えばブレーキ装置において無圧
の部分系は重要ではない。測定・切り換え装置の破壊又
は非気密性は、ほとんどの場合その装置の故障を招くこ
とになるが、しかし圧力を案内する系の機能は、測定・
切り換え装置の故障発生以外は発揮されておりかつ中空
室１３のわずかに漏れるガス量が影響を及ぼすことはな
い。The measuring and switching device 10 is entirely fitted in a channel for guiding the pressure medium. In order to continue the signal transmission, only the wire rod 17 is guided outward. Therefore, in the system that guides the pressure,
Apart from the wire penetrations for signal transmission, no further design is necessary for the safety of the system with respect to outward leaks or bursts. In the event of a non-airtightness or breakage in the measuring and switching device, the volume defined in the hollow chamber 13 is filled with fluid, but for example in a braking device the pressure-free subsystem is not important. Destruction or non-hermeticity of the measuring / switching device will almost always lead to failure of the device, but the function of the pressure guiding system is to
Except for the occurrence of a failure of the switching device, it is exerted, and the slightly leaking amount of gas in the hollow chamber 13 has no effect.
【００１１】測定・切り換え装置が例えば圧力センサと
して使用されると、センサ内の圧力とセンサを取り囲む
流体とが同じであるので、圧力測定の欠陥が簡単に検出
される。このことは、もっともらしさを検出する装置に
よって簡単に評価もしくは指示する「ゼロ」−圧力−信
号を導く。If the measuring and switching device is used, for example, as a pressure sensor, a pressure measurement defect is easily detected because the pressure inside the sensor and the fluid surrounding the sensor are the same. This leads to a "zero" -pressure-signal which is easily evaluated or indicated by the device for detecting plausibility.
【００１２】電子的な回路もしくは電子的な素子１６を
有するケーシング上方部分及びケーシング下方部分の図
示の構成の代わりに、ケーシング部分の一方を純粋な支
持部材又は基礎プレートとして形成することもできる。As an alternative to the illustrated configuration of the upper casing part and the lower casing part with the electronic circuit or electronic component 16, one of the casing parts can also be designed as a pure support member or base plate.
【図１】本発明による測定・切り換え装置の実施例を概
略的に示す図である。FIG. 1 is a diagram schematically showing an embodiment of a measurement / switching device according to the present invention.
１０ 測定・切り換え装置、 １１ ケーシング上方部
分、 １２ ケーシング下方部分、 １３ 中空室、
１４，１５ 内側、 １６ 素子、 １７ 線材10 measuring / switching device, 11 casing upper part, 12 casing lower part, 13 hollow chamber,
14 and 15 inner side, 16 elements, 17 wire rod
Claims (6)
の測定・切り換え装置であって、信号を直接的又は間接
的に発生又は変換する電気的及び電子的な素子（１６）
を受容する少なくとも１つの第１のケーシング部分（１
１）と、該第１のケーシング部分と一緒に中空室（１
３）を形成する少なくとも１つの第２のケーシング部分
（１２）と、前記素子（１６）によって生ぜしめられる
信号を送る伝達装置（１７）とを有している形式のもの
において、前記の中空室（１３）を形成するケーシング
部分（１１，１２）が、流体を案内する通路内に配置さ
れており、さらに中空室（１３）が周囲に対してシール
されており、さらに、前記素子（１６）及び伝達装置
（１７）の少なくとも一部分が中空室内に配置されてい
ることを特徴とする圧力を案内する系のための測定・切
り換え装置。1. A measuring and switching device for use in a system under fluid pressure, the electrical and electronic elements (16) generating or converting signals directly or indirectly.
At least one first casing part (1
1) together with the hollow chamber (1
3) In the form having at least one second casing part (12) which forms 3) and a transmission device (17) for transmitting the signal generated by said element (16), said hollow chamber The casing parts (11, 12) forming (13) are arranged in a passage for guiding a fluid, the hollow chamber (13) is sealed against the surroundings, and further the element (16). And a measuring and switching device for a pressure guiding system, characterized in that at least a part of the transmission device (17) is arranged in the hollow chamber.
ている請求項１記載の測定・切り換え装置。2. The measuring and switching device according to claim 1, wherein the hollow chamber (13) is filled with an inert gas.
ている請求項１記載の測定・切り換え装置。3. The measuring / switching device according to claim 1, wherein the hollow chamber (13) is filled with a polymer gas.
請求項１記載の測定・切り換え装置。4. Measuring and switching device according to claim 1, wherein the hollow chamber (13) is filled with air.
シール物質（１８）によって互いに結合されており、該
シール物質内に、伝達装置（１７）がその長さの一部分
にわたって埋め込まれている請求項１から３までのいず
れか１記載の測定・切り換え装置。5. Both casing parts (11, 12) are connected to each other by a sealing substance (18) in which the transmission device (17) is embedded over a part of its length. The measurement / switching device according to any one of items 1 to 3.
素子（１６）を支持している請求項１から５までのいず
れか１記載の測定・切り換え装置。6. Measuring and switching device according to claim 1, wherein the second casing part (12) likewise carries an element (16).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19914108609 DE4108609A1 (en) | 1991-03-16 | 1991-03-16 | Measurement or switching arrangement for high pressure e.g. vehicle braking, system - has electronic parts in hollow chamber or housing in chamber carrying high pressure fluid |
| DE4108609.0 | 1991-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0579935A true JPH0579935A (en) | 1993-03-30 |
Family
ID=6427463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5788592A Pending JPH0579935A (en) | 1991-03-16 | 1992-03-16 | Measuring and changeover device for system guiding pressure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0579935A (en) |
| DE (1) | DE4108609A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006300580A (en) * | 2005-04-18 | 2006-11-02 | National Institute Of Advanced Industrial & Technology | Internal pressure sensor for piping |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007057694B4 (en) * | 2007-11-30 | 2009-12-03 | Continental Automotive Gmbh | Leak detection in a housing of an electronic control unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4295376A (en) * | 1978-12-01 | 1981-10-20 | Besco Industries, Inc. | Force responsive transducer |
| JPH0274868A (en) * | 1988-09-09 | 1990-03-14 | Nissan Motor Co Ltd | Piezoelectric type dynamic quantity sensor |
-
1991
- 1991-03-16 DE DE19914108609 patent/DE4108609A1/en not_active Ceased
-
1992
- 1992-03-16 JP JP5788592A patent/JPH0579935A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006300580A (en) * | 2005-04-18 | 2006-11-02 | National Institute Of Advanced Industrial & Technology | Internal pressure sensor for piping |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4108609A1 (en) | 1992-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3431603B2 (en) | Pressure sensor | |
| US4325260A (en) | Pressure transducer | |
| KR920006732A (en) | Pressure sensor | |
| EP0677727A2 (en) | Pressure sensor assembly and method of producing the pressure sensor assembly | |
| CA2313313A1 (en) | Relative pressure sensor | |
| ATE252726T1 (en) | LEAK DETECTOR ARRANGEMENT AND SYSTEM | |
| JPH0579935A (en) | Measuring and changeover device for system guiding pressure | |
| JP2764993B2 (en) | Semiconductor pressure detector | |
| WO2000003219A3 (en) | Pressure sensor arrangement, especially for detecting pressure in a pressurised area of a vehicle transmission which is impinged upon by oil | |
| US4545255A (en) | Low pressure transducer | |
| JPH09250943A (en) | Water level sensor | |
| JP2000009575A (en) | Pressure measuring apparatus | |
| KR102365216B1 (en) | Pressure sensor for detecting a pressure of a liquid medium in a measuring chamber | |
| GB2148008A (en) | Casing for pressure transducer | |
| JPH02141635A (en) | Structure for attaching semiconductor type pressure sensor for high pressure | |
| CN112525410A (en) | Novel filling medium high-temperature melt pressure sensor | |
| US6425291B1 (en) | Relative-pressure sensor having a gas-filled bellows | |
| SE439463B (en) | DEVICE FOR CREATING A SIGNAL DURING THE UNDERTAKING OF AN AIR PRESSURE IN AN AIR FILLING FOR AN AIR TIRE | |
| JPH04370726A (en) | Semiconductor pressure sensor | |
| JPS61246642A (en) | Pressure sensor | |
| US7073400B2 (en) | Sensor for measuring pressure in a sealed volume | |
| JPS5841456B2 (en) | pressure transmitter | |
| JPH0571726U (en) | Liquid level indicator | |
| JPH1114479A (en) | Semiconductor pressure-detecting device | |
| JPH01248033A (en) | Semiconductor type pressure sensor |