WO1998025112A3 - Seat occupant sensing system - Google Patents

Seat occupant sensing system Download PDF

Info

Publication number
WO1998025112A3
WO1998025112A3 PCT/US1997/017327 US9717327W WO9825112A3 WO 1998025112 A3 WO1998025112 A3 WO 1998025112A3 US 9717327 W US9717327 W US 9717327W WO 9825112 A3 WO9825112 A3 WO 9825112A3
Authority
WO
WIPO (PCT)
Prior art keywords
seat
resistance force
variable resistance
weight
support member
Prior art date
Application number
PCT/US1997/017327
Other languages
French (fr)
Other versions
WO1998025112A2 (en
Inventor
Robert Michael Podoloff
Ronald Anthony Vallette Jr
Original Assignee
Breed Automotive Tech
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 Breed Automotive Tech filed Critical Breed Automotive Tech
Priority to JP52555598A priority Critical patent/JP2002516631A/en
Priority to DE19782111T priority patent/DE19782111T1/en
Priority to GB9910878A priority patent/GB2335750B/en
Publication of WO1998025112A2 publication Critical patent/WO1998025112A2/en
Publication of WO1998025112A3 publication Critical patent/WO1998025112A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
    • G01G19/12—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles having electrical weight-sensitive devices
    • 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
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
    • 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

Abstract

A seat occupant sensing system has a plurality of variable resistance force sensors (20) located between a rigid seat support member (16) and the floor of the vehicle. The force transferred from the rigit seat support member to the floor of the vehicle passes through said variable resistance force sensors which sense the magnitude of the force transferred therethrough and generate a signal which is indicative of the force transferred therethrough resistance force sensors interposed between a rigid seat support member and a rigid seat pan member (18) such that the weight supported by the seat pan member is transferred from the seat pan member to the seat support member via said at least one variable resistance force sensor which senses the magnitude of the weight transferred therethrough. A device, such as a microprocessor, processes a signal from the variable resistance force sensors to determine the weight that the rigid seat pan member is bearing. The signal processing device may control the activation and operation of a safety device such as an airbag or seat belt pretensioner as a function of the presence of and weight of a seat occupant.
PCT/US1997/017327 1996-11-22 1997-09-26 Seat occupant sensing system WO1998025112A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP52555598A JP2002516631A (en) 1996-11-22 1997-09-26 Device to detect a sitting person
DE19782111T DE19782111T1 (en) 1996-11-22 1997-09-26 Seat occupancy detection system
GB9910878A GB2335750B (en) 1996-11-22 1997-09-26 Seat occupant sensing system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/755,272 US5991676A (en) 1996-11-22 1996-11-22 Seat occupant sensing system
US755,272 1996-11-22

Publications (2)

Publication Number Publication Date
WO1998025112A2 WO1998025112A2 (en) 1998-06-11
WO1998025112A3 true WO1998025112A3 (en) 1999-08-26

Family

ID=25038446

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/017327 WO1998025112A2 (en) 1996-11-22 1997-09-26 Seat occupant sensing system

Country Status (6)

Country Link
US (1) US5991676A (en)
JP (1) JP2002516631A (en)
KR (1) KR100411925B1 (en)
DE (1) DE19782111T1 (en)
GB (1) GB2335750B (en)
WO (1) WO1998025112A2 (en)

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KR20000057196A (en) 2000-09-15
GB2335750B (en) 2001-02-07
WO1998025112A2 (en) 1998-06-11
US5991676A (en) 1999-11-23
JP2002516631A (en) 2002-06-04
GB2335750A (en) 1999-09-29
KR100411925B1 (en) 2003-12-18
GB2335750A8 (en) 1999-11-04
DE19782111T1 (en) 1999-12-23
GB9910878D0 (en) 1999-07-07

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