DE20004248U1 - Pressure sensor - Google Patents

Pressure sensor

Info

Publication number
DE20004248U1
DE20004248U1 DE20004248U DE20004248U DE20004248U1 DE 20004248 U1 DE20004248 U1 DE 20004248U1 DE 20004248 U DE20004248 U DE 20004248U DE 20004248 U DE20004248 U DE 20004248U DE 20004248 U1 DE20004248 U1 DE 20004248U1
Authority
DE
Germany
Prior art keywords
capacitor pole
pressure sensor
capacitor
pole element
sensor according
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
Application number
DE20004248U
Other languages
German (de)
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.)
WET Automotive Systems AG
Original Assignee
WET Automotive Systems AG
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 WET Automotive Systems AG filed Critical WET Automotive Systems AG
Priority to DE20004248U priority Critical patent/DE20004248U1/en
Publication of DE20004248U1 publication Critical patent/DE20004248U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/14—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators
    • G01L1/142—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators using capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/40—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
    • G01G19/413—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means
    • G01G19/414—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
    • G01G19/4142—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only for controlling activation of safety devices, e.g. airbag systems

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (14)

1. Drucksensor mit einem Kondensator mit einem ersten Kondensator- Polelement (1) und mindestens einem zweiten Kondensator-Polelement (3), welche beabstandet zueinander angeordnet sind, dadurch gekennzeichnet, daß mindestens ein Kondensator-Polelement (1, 3) mindestens eine Unebenheit (31, 31' bzw. 32, 32') an der Oberfläche seiner zum anderen Kondensator-Polelement (3, 1) weisenden leitfähigen Bestandteile aufweist, daß der Abstand der beiden Kondensator- Polelemente (1, 3) voneinander im Bereich der Unebenheit (31, 31' bzw. 32, 32') anders als in einem der Unebenheit (31, 31' bzw. 32, 32') benachbarten Bereich (32, 32' bzw. 31, 31') ist, und daß die Differenz dieser beiden verschiedenen Abstände bei Druckbeaufschlagung des Kondensators durch Verformung mindestens eines Kondensator- Polelements (1, 3) veränderbar - insbesondere - verringerbar ist.1. Pressure sensor with a capacitor with a first capacitor pole element ( 1 ) and at least a second capacitor pole element ( 3 ) which are arranged at a distance from one another, characterized in that at least one capacitor pole element ( 1 , 3 ) has at least one unevenness ( 31 , 31 'or 32 , 32 ') on the surface of its conductive components facing the other capacitor pole element ( 3 , 1 ) that the distance between the two capacitor pole elements ( 1 , 3 ) from one another in the region of the unevenness ( 31 , 31 'or 32 , 32 ') is different than in a region ( 32 , 32 'or 31 , 31 ') adjacent to the unevenness ( 31 , 31 'or 32 , 32 '), and that the difference between these two different distances when pressure is applied to the capacitor by deforming at least one capacitor pole element ( 1 , 3 ) - in particular - can be reduced. 2. Drucksensor mit einem ersten Kondensator-Polelement (1), mit mindestens einem zweiten Kondensator-Polelement (3) und mit mindestens einer elektrisch nicht leitenden Isolationseinrichtung (2), welche zumindest teilweise zwischen den beiden Kondensator-Polelementen (1, 3) angeordnet ist, dadurch gekennzeichnet, daß mindestens ein Kondensator-Polelement (1, 3) zumindest in einem Teilbereich (4) seiner zum jeweils anderen Kondensator-Polelement (1, 3) gewandten Oberfläche von der Isolationseinrichtung (2) beabstandet ist, und daß der Teilbereich (4) durch Druckbeaufschlagung des Drucksensors (100) durch flexible Verformung des Kondensator-Poles (1, 3) zur Isolationseinrichtung (2) hin bewegbar ist.2. Pressure sensor with a first capacitor pole element ( 1 ), with at least one second capacitor pole element ( 3 ) and with at least one electrically non-conductive insulation device ( 2 ), which is at least partially arranged between the two capacitor pole elements ( 1 , 3 ) is characterized in that at least one capacitor pole member (1, 3) of its at least spaced from each other capacitor pole member (1, 3) facing surface of the insulating device (2) in a partial region (4), and that the partial region ( 4 ) by applying pressure to the pressure sensor ( 100 ) by flexible deformation of the capacitor pole ( 1 , 3 ) towards the insulation device ( 2 ). 3. Drucksensor mit mindestens einem ersten Kondensator-Polelement (1), mit einem zweiten Kondensator-Polelement (3) und mit mindestens einer elektrisch nicht leitenden Isolationseinrichtung (2), welche zumindest teilweise zwischen den beiden Kondensator-Polelementen (1, 3) angeordnet ist, dadurch gekennzeichnet, daß mindestens ein Kondensator-Polelement (1, 3) an der Oberfläche seiner dem anderen Kondensator-Polelement (1, 3) zugewandten elektrisch leitfähigen Bestandteile mindestens eine Unebenheit (31, 31', 32, 32') einer bestimmten Normaltiefe (H) besitzt, und daß die Normaltiefe (H) bei Druckbeaufschlagung des Drucksensors (100) durch flexible Verformung des Kondensator-Polelementes (1, 3) auf eine Meßtiefe (h) verringerbar ist.3. Pressure sensor with at least a first capacitor pole element ( 1 ), with a second capacitor pole element ( 3 ) and with at least one electrically non-conductive insulation device ( 2 ) which is at least partially arranged between the two capacitor pole elements ( 1 , 3 ) is characterized in that at least one capacitor pole element ( 1 , 3 ) on the surface of its electrically conductive components facing the other capacitor pole element ( 1 , 3 ) has at least one unevenness ( 31 , 31 ', 32 , 32 ') of a certain one Has normal depth (H), and that the normal depth (H) can be reduced to a measuring depth (h) when the pressure sensor ( 100 ) is pressurized by flexible deformation of the capacitor pole element ( 1 , 3 ). 4. Drucksensor nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß mindestens eines der Kondensator-Polelemente (1, 3) in Richtung auf die Isolationseinrichtung (2) kompressibel ist.4. Pressure sensor according to one of the preceding claims, characterized in that at least one of the capacitor pole elements ( 1 , 3 ) in the direction of the insulation device ( 2 ) is compressible. 5. Drucksensor nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß mindestens ein Kondensator-Polelement (1, 3) nur in einem der Isolationseinrichtung (2) zugewandten Oberflächenbereich kompressibel ist.5. Pressure sensor according to one of the preceding claims, characterized in that at least one capacitor pole element ( 1 , 3 ) is compressible only in one of the insulation device ( 2 ) facing surface area. 6. Drucksensor nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß mindestens ein Kondensator-Polelement (1, 3) zumindest teilweise steif und/oder zumindest teilweise flexibel ist.6. Pressure sensor according to one of the preceding claims, characterized in that at least one capacitor pole element ( 1 , 3 ) is at least partially stiff and / or at least partially flexible. 7. Drucksensor nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß mindestens eines der Kondensator-Polelemente (1, 3) ein metallisiertes Textil aus synthetischen Fasern aufweist.7. Pressure sensor according to one of the preceding claims, characterized in that at least one of the capacitor pole elements ( 1 , 3 ) has a metallized textile made of synthetic fibers. 8. Drucksensor nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß mindestens eines der Kondensator-Polelemente (1, 3) elektrisch leitfähige Fasern aufweist, welche in ein elektrisch nicht leitfähiges, elastisch verformbares Material eingebettet sind.8. Pressure sensor according to one of the preceding claims, characterized in that at least one of the capacitor pole elements ( 1 , 3 ) has electrically conductive fibers which are embedded in an electrically non-conductive, elastically deformable material. 9. Drucksensor nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß mindestens zwei verschiedene, elektrisch nicht leitfähige Medien zwischen den Kondensator-Polelementen (1, 3) angeordnet sind, und daß mindestens eines der Medien ein Fluid ist, welches bei Druckbeaufschlagung des Drucksensors (100) aus dem Bereich zwischen den beiden Kondensator-Polelementen (1, 3) verdrängbar ist.9. Pressure sensor according to one of the preceding claims, characterized in that at least two different, electrically non-conductive media between the capacitor pole elements ( 1 , 3 ) are arranged, and that at least one of the media is a fluid which, when pressurized by the pressure sensor ( 100 ) can be displaced from the area between the two capacitor pole elements ( 1 , 3 ). 10. Drucksensor nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Isolationseinrichtung (2) zumindest teilweise steif und loder zumindest teilweise flexibel und/oder in Richtung der Druckbeaufschlagung im wesentlichen inkompressibel ist.10. Pressure sensor according to one of the preceding claims, characterized in that the insulation device ( 2 ) is at least partially stiff and / or at least partially flexible and / or substantially incompressible in the direction of the pressurization. 11. Drucksensor nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Isolationseinrichtung (2) durch eine Folie gebildet ist.11. Pressure sensor according to one of the preceding claims, characterized in that the insulation device ( 2 ) is formed by a film. 12. Drucksensor nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Normalhöhe (H) der Unebenheit (31, 31', 32, 32') zwischen der Isolationseinrichtung (2) und dem Kondensator-Polelement (1, 3) zumindest in einem Teilbereich (4) zwischen einem und zehn Millimetern, insbesondere zwischen zehn Mikrometern und einem Millimeter liegt.12. Pressure sensor according to one of the preceding claims, characterized in that the normal height (H) of the unevenness ( 31 , 31 ', 32 , 32 ') between the insulation device ( 2 ) and the capacitor pole element ( 1 , 3 ) at least in one Partial area ( 4 ) is between one and ten millimeters, in particular between ten micrometers and one millimeter. 13. Vorrichtung zum Detektieren der Anwesenheit einer Person auf einem Fahrzeugsitz, dadurch gekennzeichnet, daß die Vorrichtung einen Drucksensor nach einem der voranstehenden Ansprüche aufweist.13. Device for detecting the presence of a person on a Vehicle seat, characterized in that the device has a Pressure sensor according to one of the preceding claims. 14. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß eines der Kondensator-Polelemente (1, 3) durch den Sockel des Fahrzeugsitzes gebildet wird.14. The apparatus according to claim 12, characterized in that one of the capacitor pole elements ( 1 , 3 ) is formed by the base of the vehicle seat.
DE20004248U 2000-03-10 2000-03-10 Pressure sensor Expired - Lifetime DE20004248U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20004248U DE20004248U1 (en) 2000-03-10 2000-03-10 Pressure sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20004248U DE20004248U1 (en) 2000-03-10 2000-03-10 Pressure sensor

Publications (1)

Publication Number Publication Date
DE20004248U1 true DE20004248U1 (en) 2000-07-06

Family

ID=7938430

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20004248U Expired - Lifetime DE20004248U1 (en) 2000-03-10 2000-03-10 Pressure sensor

Country Status (1)

Country Link
DE (1) DE20004248U1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10153266A1 (en) * 2000-11-27 2005-02-17 W.E.T. Automotive Systems Ag pressure detector
US7400080B2 (en) 2002-09-20 2008-07-15 Danfoss A/S Elastomer actuator and a method of making an actuator
US7732999B2 (en) 2006-11-03 2010-06-08 Danfoss A/S Direct acting capacitive transducer
US7785905B2 (en) 2001-12-21 2010-08-31 Danfoss A/S Dielectric actuator or sensor structure and method of making it
US7868221B2 (en) 2003-02-24 2011-01-11 Danfoss A/S Electro active elastic compression bandage
US7880371B2 (en) 2006-11-03 2011-02-01 Danfoss A/S Dielectric composite and a method of manufacturing a dielectric composite
US8181338B2 (en) 2000-11-02 2012-05-22 Danfoss A/S Method of making a multilayer composite
US8692442B2 (en) 2012-02-14 2014-04-08 Danfoss Polypower A/S Polymer transducer and a connector for a transducer
US8891222B2 (en) 2012-02-14 2014-11-18 Danfoss A/S Capacitive transducer and a method for manufacturing a transducer

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8181338B2 (en) 2000-11-02 2012-05-22 Danfoss A/S Method of making a multilayer composite
DE10153266A1 (en) * 2000-11-27 2005-02-17 W.E.T. Automotive Systems Ag pressure detector
DE10153266B4 (en) * 2000-11-27 2005-07-14 W.E.T. Automotive Systems Ag pressure detector
US7785905B2 (en) 2001-12-21 2010-08-31 Danfoss A/S Dielectric actuator or sensor structure and method of making it
US7400080B2 (en) 2002-09-20 2008-07-15 Danfoss A/S Elastomer actuator and a method of making an actuator
US7895728B2 (en) 2002-09-20 2011-03-01 Danfoss A/S Method of making a rolled elastomer actiuator
US7868221B2 (en) 2003-02-24 2011-01-11 Danfoss A/S Electro active elastic compression bandage
US7732999B2 (en) 2006-11-03 2010-06-08 Danfoss A/S Direct acting capacitive transducer
US7880371B2 (en) 2006-11-03 2011-02-01 Danfoss A/S Dielectric composite and a method of manufacturing a dielectric composite
US8692442B2 (en) 2012-02-14 2014-04-08 Danfoss Polypower A/S Polymer transducer and a connector for a transducer
US8891222B2 (en) 2012-02-14 2014-11-18 Danfoss A/S Capacitive transducer and a method for manufacturing a transducer

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20000810

R150 Term of protection extended to 6 years

Effective date: 20030327

R157 Lapse of ip right after 6 years

Effective date: 20061003