EP1285247A1 - Capteur de pression resistant au gel - Google Patents

Capteur de pression resistant au gel

Info

Publication number
EP1285247A1
EP1285247A1 EP01940174A EP01940174A EP1285247A1 EP 1285247 A1 EP1285247 A1 EP 1285247A1 EP 01940174 A EP01940174 A EP 01940174A EP 01940174 A EP01940174 A EP 01940174A EP 1285247 A1 EP1285247 A1 EP 1285247A1
Authority
EP
European Patent Office
Prior art keywords
pressure sensor
freeze
pressure measuring
sensor according
resistant pressure
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.)
Withdrawn
Application number
EP01940174A
Other languages
German (de)
English (en)
Inventor
Heiko Scheurich
Winfried Kuhnt
Martin Mast
Berthold Rogge
Masoud Habibi
Hanspeter Mayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1285247A1 publication Critical patent/EP1285247A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/04—Means for compensating for effects of changes of temperature, i.e. other than electric compensation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
    • G01L19/0627—Protection against aggressive medium in general
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/147—Details about the mounting of the sensor to support or covering means

Definitions

  • the present invention relates to a pressure sensor and in particular to a freeze-resistant pressure sensor.
  • Pressure is required as a measurement and control parameter in a large number of applications, ranging from medical technology to automotive technology.
  • the applications of pressure sensors are correspondingly diverse.
  • a freeze-resistant pressure sensor is shown in WO-98/31997.
  • a silicon chip is attached to a glass carrier.
  • the glass carrier has an opening to the silicon chip.
  • the glass support is attached to a tubular support so that a continuous line is formed.
  • the print medium is in contact with the silicon chip via the line.
  • a compressible insert is installed in the line.
  • a disadvantage of this pressure sensor is that, despite the compressible insert, it is possible for the pressure sensor to be damaged when the fluid freezes, since the compressible insert is only arranged in a section of the line and thus freezes fluid in the area of the pressure measuring chamber and after the compressible insert can, so that there is no sufficient expansion possibility for the freezing fluid in the pressure measurement space and the pressure sensor can be damaged.
  • a further disadvantage is that the method for introducing the compressible insert is complex. Furthermore, the compressible insert is exposed to high thermal stresses during the fastening process of the silicon chip to the glass carrier or the glass carrier to the tubular carrier, so that it has only a short lifespan or can be damaged during assembly.
  • a sensor for the absolute pressure in the intake manifold which has a housing and a cover.
  • the cover with the housing has several slots and is designed accordingly
  • the freeze-resistant pressure sensor according to the invention with the features of the main claim has the advantage that an elastically flexible compensation element in the Pressure measuring room is arranged. This ensures that if the fluid in the pressure measuring chamber freezes, it can expand due to the presence of the elastically flexible compensation element in the pressure measuring space without a pressure measuring cell of the pressure sensor being destroyed or damaged. With a normal pressurization, ie when the fluid in the pressure measuring chamber is not frozen, the elastically flexible compensation element has no function. The pressure spreads evenly to the pressure measuring cell. If so
  • the elastically flexible portion Preferably, the elastically flexible
  • the resilient element can be made of
  • the elastically resilient compensating element is preferably designed as an elastic plate.
  • the elastically flexible compensating element is elastically mounted.
  • the elastic mounting is formed by an elastically glued plate.
  • a solid plate is fastened inside the pressure sensor housing by means of an adhesive which also has elastic properties after hardening.
  • an adhesive which also has elastic properties after hardening.
  • the resilient compensating element is only a plate mounted on a spring.
  • the spring should only have a low spring force in order to enable sufficient expansion of the fluid when freezing in the pressure measuring room.
  • the elastically flexible compensating element is designed as an elastic housing wall. This can be achieved, for example, in that part of the housing wall has a smaller thickness than the rest of the housing wall. This means that a freeze-resistant pressure sensor can be manufactured particularly easily and at low cost.
  • the resilient compensating element is advantageously designed as an elastic plate integrated in the housing.
  • the size of the elastic plate can be dimensioned according to the volume increase to be provided.
  • the medium located in the pressure sensor housing is preferably water.
  • the pressure measuring cell can be designed, for example, using thick-film technology. Furthermore, it is also possible for the pressure measuring cell to be provided with a protective layer. According to the invention, it is also possible for the pressure sensor to be designed, for example, as an absolute pressure sensor or as a differential pressure sensor.
  • FIG. 1 shows a cross section through a first exemplary embodiment of a freezer-resistant pressure sensor
  • Figure 2 shows a cross section through a second embodiment of a freeze-resistant pressure sensor according to the invention.
  • FIGS. 1 and 2 The structure of the pressure sensors in FIGS. 1 and 2 is not drawn to scale in order to enable a better detection of the present invention.
  • the pressure sensor comprises a housing 9, a pressure measuring cell 2 and a carrier plate 3.
  • the measuring cell 2 is fastened on the carrier plate 3 and is arranged inside a pressure measuring chamber 10.
  • the carrier plate 3 is firmly connected to the housing 9.
  • the pressure sensor according to the first exemplary embodiment has a pressure port 4, which is connected to the pressure measuring chamber 10 and via which a Pressure medium such as urea can be fed into the pressure measuring chamber 10.
  • the resilient compensating element 1 is directly on the wall of the housing 9 e.g. attached by gluing.
  • the pressure measuring cell 2 is directly opposite the elastically flexible compensating element 1. This is a particularly advantageous arrangement of the pressure measuring cell 2 and the elastically flexible compensating element 1 to one another in order to prevent damage to the pressure measuring cell 2.
  • the carrier plate 3 is connected via an electrical connection 5 to a plug 6, via which the recorded values are then e.g. can be supplied to a control and / or evaluation unit.
  • the supply and the signal voltage are also via the electrical
  • Connection 5 passed from the carrier plate 3 to or from the connector 6.
  • FIG. 2 shows a second exemplary embodiment of a freeze-resistant pressure sensor according to the invention. The same parts are designated with the same reference numerals as in the first embodiment.
  • an elastically glued-in compensation element 7 is provided in the second exemplary embodiment as an elastically flexible compensation element.
  • the plate 7 is glued into an inner cavity of the housing 9 such that a further cavity 11 is formed in the housing 9 in addition to the pressure measuring chamber 10.
  • the plate 7 is glued into its entire circumference in the housing 9 by means of an adhesive which is elastic even after curing. This creates the cavity 11, which with a gas, e.g. Air is filled. By gluing, the cavity 11 is sealed above the pressure measuring space 10.
  • the elastically flexible compensation element in the second starting example consists of the plate 7 and the elastic bearing 8, which is provided by the adhesive.
  • a freeze-resistant pressure sensor which comprises a pressure sensor housing 9, which encloses a pressure measuring chamber 10, and a pressure measuring cell 2. Furthermore, an elastically flexible compensating element 1, 7, 8 is provided, which is arranged in the pressure measuring chamber 10.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

La présente invention concerne un capteur de pression résistant au gel qui comprend un boîtier (9), renfermant une chambre de mesure de pression (10), et une cellule de mesure de pression (2). Un élément de compensation élastique souple (1) est également placé dans la chambre de mesure de pression (10).
EP01940174A 2000-05-13 2001-04-19 Capteur de pression resistant au gel Withdrawn EP1285247A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10023589 2000-05-13
DE10023589A DE10023589A1 (de) 2000-05-13 2000-05-13 Gefrierresistenter Drucksensor
PCT/DE2001/001506 WO2001088497A1 (fr) 2000-05-13 2001-04-19 Capteur de pression resistant au gel

Publications (1)

Publication Number Publication Date
EP1285247A1 true EP1285247A1 (fr) 2003-02-26

Family

ID=7641998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01940174A Withdrawn EP1285247A1 (fr) 2000-05-13 2001-04-19 Capteur de pression resistant au gel

Country Status (6)

Country Link
US (1) US20030019298A1 (fr)
EP (1) EP1285247A1 (fr)
JP (1) JP2003533688A (fr)
KR (1) KR20020044131A (fr)
DE (1) DE10023589A1 (fr)
WO (1) WO2001088497A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6883380B2 (en) * 2003-05-16 2005-04-26 Rosemount Inc Pressure sensor capsule
DE10340075A1 (de) * 2003-08-30 2005-03-24 Hydraulik-Ring Gmbh Drucksensor für Abgasreduziersysteme, insbesondere von Dieselmotoren
DE10349143B4 (de) * 2003-10-17 2006-05-24 Daimlerchrysler Ag Dosiereinheit
KR100726247B1 (ko) * 2005-10-17 2007-06-08 삼성전기주식회사 기판 형성방법
DE102007060184B4 (de) * 2006-12-08 2012-10-04 Ab Elektronik Sachsen Gmbh Frostsicherer Drucksensor
DE102007036272B4 (de) * 2007-07-31 2010-04-08 Eads Deutschland Gmbh Membrananordnung zur Druck- oder Schallmessung mit einem Membranschutz
DE102008026611B4 (de) * 2008-06-03 2013-01-24 Continental Automotive Gmbh Drucksensoranordnung
EP2975375B1 (fr) 2010-12-27 2019-12-04 TDK Electronics AG Capteur de pression à élément compressible
EP2659249B1 (fr) 2010-12-27 2015-06-24 Epcos AG Capteur de pression à élément compressible
DE102012202038A1 (de) 2012-02-10 2013-08-14 Rolls-Royce Deutschland Ltd & Co Kg Messvorrichtung mit einem Drucksensor
DE102012010979A1 (de) * 2012-06-02 2013-12-05 Hydac Electronic Gmbh System zur Abgasnachbehandlung bei Verbrennungsmotoren
US9534975B2 (en) 2014-08-25 2017-01-03 Measurement Specialties, Inc. Freeze proof protection of pressure sensors
CN107290099B (zh) * 2016-04-11 2021-06-08 森萨塔科技公司 压力传感器、用于压力传感器的插塞件和制造插塞件的方法
US10271121B2 (en) 2016-09-23 2019-04-23 Apple Inc. Shock mounted transducer assembly
DE102017002450A1 (de) * 2017-03-14 2018-09-20 Hydac Fluidtechnik Gmbh Messvorrichtung
JP6863266B2 (ja) * 2017-12-20 2021-04-21 オムロン株式会社 圧力センサおよび圧力センサを備えた移動装置
KR102184158B1 (ko) * 2019-09-11 2020-11-30 한국표준과학연구원 어레이형 촉각센서의 성능 평가시스템
CN110672258B (zh) * 2019-10-09 2021-08-20 武汉飞恩微电子有限公司 一种耐液压冲击和抗冰冻的尿素溶液压力传感器
US11428593B2 (en) 2019-11-20 2022-08-30 Honeywell International Inc. Methods and apparatuses for providing freeze resistant sensing assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4112309A1 (de) * 1991-04-15 1992-10-22 Mitsubishi Electric Corp Sensor fuer druckimpulse
JPH05118944A (ja) * 1991-10-25 1993-05-14 Hitachi Ltd 半導体式圧力センサ
DE4205264A1 (de) * 1992-02-21 1993-08-26 Draegerwerk Ag Messkopf fuer ein druckmessgeraet mit einem drucksensor zur gleichzeitigen betaetigung eines schaltkontaktes
KR200145406Y1 (ko) * 1996-11-05 1999-06-15 호우덴코 내연 기관용 흡기관 압력측정 센서의 하우징구조
US5792958A (en) * 1997-01-21 1998-08-11 Honeywell Inc. Pressure sensor with a compressible insert to prevent damage from freezing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0188497A1 *

Also Published As

Publication number Publication date
WO2001088497A1 (fr) 2001-11-22
JP2003533688A (ja) 2003-11-11
KR20020044131A (ko) 2002-06-14
DE10023589A1 (de) 2001-11-29
US20030019298A1 (en) 2003-01-30

Similar Documents

Publication Publication Date Title
EP1285247A1 (fr) Capteur de pression resistant au gel
EP1269135B1 (fr) Module de detection de pression
EP2340426B1 (fr) Dispositif de mesure et son procédé de fabrication
DE69422851T2 (de) Membran-Druckwandler mit einer Stossschutzvorrichtung und Dichtemessgerät mit einem solchen Wandler
DE102009000597B4 (de) Haltekörper zur spielfreien Montage von Sensoren
EP0956493A1 (fr) Composant capteur de pression a raccord de tuyau
DE19731420A1 (de) Vorrichtung zur Erfassung des Drucks und der Temperatur im Saugrohr einer Brennkraftmaschine und Verfahren zu ihrer Herstellung
EP0268742A1 (fr) Dispositif de boîtier avec compensation de pression
EP1167938A2 (fr) Dispositif de mesure de pression
EP1921020A1 (fr) Elément d'égalisation de pression pour un boîtier
DE102007052364A1 (de) Drucksensoranordnung
DE4413274A1 (de) Drucksensor
EP0199772B1 (fr) Sonde pour haute pression
DE19612964A1 (de) Drucksensor und Verfahren zur Herstellung eines Drucksensors
DE4234289C1 (de) Drucksensor
DE20219732U1 (de) Druckaufnehmer für die Messung hydraulischer Drücke
DE3703685C2 (fr)
DE102010012823B4 (de) Druckmittler mit Temperatursensor
EP0008351A2 (fr) Capteur de pression rempli de fluide
EP0354238A1 (fr) Dispositif de raccordement elastique, notamment a systeme integre de mesure d'efforts, et procede pour sa fabrication.
WO2001007884A1 (fr) Capteur de pression
WO2003087752A1 (fr) Capteur de pression
DE102019132723A1 (de) Relativdrucksensor mit Trocknungskammer
DE10145540A1 (de) Drucksensorbaugruppe
EP1634048B1 (fr) Dispositif detecteur de pression

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20021213

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MAYER, HANSPETER

Inventor name: HABIBI, MASOUD

Inventor name: ROGGE, BERTHOLD

Inventor name: MAST, MARTIN

Inventor name: KUHNT, WINFRIED

Inventor name: SCHEURICH, HEIKO

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20031031

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB SE