WO2003007476A3 - Compressible capacitance sensor for determining the presence of an object - Google Patents

Compressible capacitance sensor for determining the presence of an object Download PDF

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Publication number
WO2003007476A3
WO2003007476A3 PCT/US2002/021612 US0221612W WO03007476A3 WO 2003007476 A3 WO2003007476 A3 WO 2003007476A3 US 0221612 W US0221612 W US 0221612W WO 03007476 A3 WO03007476 A3 WO 03007476A3
Authority
WO
WIPO (PCT)
Prior art keywords
capacitance
capacitance sensor
determining
compressible
window
Prior art date
Application number
PCT/US2002/021612
Other languages
French (fr)
Other versions
WO2003007476A2 (en
Inventor
John M Washeleski
Randall L Perrin
Original Assignee
Nartron Corp
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 Nartron Corp filed Critical Nartron Corp
Priority to JP2003513127A priority Critical patent/JP4309259B2/en
Priority to EP02746933A priority patent/EP1552613B1/en
Priority to DE60226907T priority patent/DE60226907D1/en
Publication of WO2003007476A2 publication Critical patent/WO2003007476A2/en
Publication of WO2003007476A3 publication Critical patent/WO2003007476A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/01516—Passenger detection systems using force or pressure sensing means
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/01516—Passenger detection systems using force or pressure sensing means
    • B60R21/01526—Passenger detection systems using force or pressure sensing means using piezoelectric elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/0153—Passenger detection systems using field detection presence sensors
    • B60R21/01532—Passenger detection systems using field detection presence sensors using electric or capacitive field sensors
    • 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
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
    • G01D5/241—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes
    • G01D5/2417—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes by varying separation
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
    • E05Y2900/548—Trunk lids
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches

Abstract

A compressible variable capacitance sensor for determining the presence, size, position, and type of an object such as a human body part includes two flexible conductor elements separated by a non-conductive compressible element. The capacitance of the capacitance sensor changes as a function of force applied by an object on the capacitance sensor. A controller senses the capacitance of the capacitance sensor and controls a device accordingly. The device may be a movable closed opening such as a window in which the controller controls the window as a function of the monitored capacitance to prevent pinching of the object. The device may also be a seat in which the controller determines the characteristics of the seat occupant based on the monitored capacitance.
PCT/US2002/021612 2001-07-09 2002-07-09 Compressible capacitance sensor for determining the presence of an object WO2003007476A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2003513127A JP4309259B2 (en) 2001-07-09 2002-07-09 Compressible capacitive sensor for object presence determination
EP02746933A EP1552613B1 (en) 2001-07-09 2002-07-09 Compressible capacitance sensor for determining the presence of an object
DE60226907T DE60226907D1 (en) 2001-07-09 2002-07-09 COMPRESSIVE CAPACITY SENSOR FOR DETERMINING THE PRESENCE OF AN OBJECT

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/901,883 2001-07-09
US09/901,883 US6499359B1 (en) 2001-07-09 2001-07-09 Compressible capacitance sensor for determining the presence of an object

Publications (2)

Publication Number Publication Date
WO2003007476A2 WO2003007476A2 (en) 2003-01-23
WO2003007476A3 true WO2003007476A3 (en) 2005-05-19

Family

ID=25414980

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/021612 WO2003007476A2 (en) 2001-07-09 2002-07-09 Compressible capacitance sensor for determining the presence of an object

Country Status (5)

Country Link
US (1) US6499359B1 (en)
EP (2) EP1552613B1 (en)
JP (1) JP4309259B2 (en)
DE (1) DE60226907D1 (en)
WO (1) WO2003007476A2 (en)

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US20030005775A1 (en) 2003-01-09
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US6499359B1 (en) 2002-12-31
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EP1933461A1 (en) 2008-06-18
JP4309259B2 (en) 2009-08-05

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