GB2333605A - Seat weight sensor having self-regulating fluid filled bladder - Google Patents

Seat weight sensor having self-regulating fluid filled bladder

Info

Publication number
GB2333605A
GB2333605A GB9909432A GB9909432A GB2333605A GB 2333605 A GB2333605 A GB 2333605A GB 9909432 A GB9909432 A GB 9909432A GB 9909432 A GB9909432 A GB 9909432A GB 2333605 A GB2333605 A GB 2333605A
Authority
GB
United Kingdom
Prior art keywords
bladder
weight sensor
fluid
operatively coupled
self
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.)
Granted
Application number
GB9909432A
Other versions
GB2333605B (en
GB9909432D0 (en
Inventor
Michael R Sewell
Donald A Duda
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.)
Automotive Systems Laboratory Inc
Original Assignee
Automotive Systems Laboratory Inc
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
Priority claimed from US09/003,868 external-priority patent/US5918696A/en
Application filed by Automotive Systems Laboratory Inc filed Critical Automotive Systems Laboratory Inc
Publication of GB9909432D0 publication Critical patent/GB9909432D0/en
Publication of GB2333605A publication Critical patent/GB2333605A/en
Application granted granted Critical
Publication of GB2333605B publication Critical patent/GB2333605B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B60R21/01522—Passenger detection systems using force or pressure sensing means using fluid 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
    • G01G19/40—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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G5/00—Weighing apparatus wherein the balancing is effected by fluid action
    • G01G5/04—Weighing apparatus wherein the balancing is effected by fluid action with means for measuring the pressure imposed by the load on a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
    • B60K28/02—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver
    • B60K28/04—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver responsive to presence or absence of the driver, e.g. to weight or lack thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Air Bags (AREA)
  • Seats For Vehicles (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

A hydrostatic weight sensor (10) incorporates a bladder (15) having a plurality of cells (210) in fluid communication with one another, and with the outlet of a check valve (30), the inlet of which is in fluid communication with a source of sensing fluid, preferably the atmosphere (25). A cell-filling restoring mechanism (230) is operatively coupled to a portion of the cells of the bladder. When the applied load is removed from the hydrostatic weight sensor (10), the volume of those cells (210) operatively coupled to the cell-filling restoring mechanism (230) is restored, whereupon if the pressure becomes less than the local atmospheric pressure, then fluid is added to the bladder (15) through the check valve (30), thereby restoring lost sensing fluid. A pressure sensor (20) operatively coupled to the bladder generates a signal (22) responsive to the pressure of the sensing fluid within the bladder (15), and a signal processor (50) calculates the weight of the occupant (5) therefrom.
GB9909432A 1997-09-05 1998-09-04 Seat weight sensor having self-regulating fluid filled bladder Expired - Fee Related GB2333605B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US5808697P 1997-09-05 1997-09-05
US09/003,868 US5918696A (en) 1997-09-05 1998-01-07 Seat weight sensor with means for distributing loads
PCT/US1998/018437 WO1999011483A1 (en) 1997-09-05 1998-09-04 Seat weight sensor having self-regulating fluid filled bladder

Publications (3)

Publication Number Publication Date
GB9909432D0 GB9909432D0 (en) 1999-06-23
GB2333605A true GB2333605A (en) 1999-07-28
GB2333605B GB2333605B (en) 2001-10-10

Family

ID=26672307

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9909432A Expired - Fee Related GB2333605B (en) 1997-09-05 1998-09-04 Seat weight sensor having self-regulating fluid filled bladder

Country Status (3)

Country Link
JP (1) JP2001506009A (en)
GB (1) GB2333605B (en)
WO (1) WO1999011483A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6476514B1 (en) 2000-03-29 2002-11-05 Ford Global Technologies, Inc. Occupant detection sensor assembly for seats
AU2003236260A1 (en) * 2002-04-09 2003-10-20 M.I.Laboratories Corporation Air bag start control device of vehicle
US7000948B2 (en) * 2003-11-20 2006-02-21 Delphi Technologies, Inc. Internally tethered seat bladder for occupant weight estimation
US20160207429A1 (en) * 2013-07-31 2016-07-21 Faurecia Automotive Seating, Llc. Seat cushion
US10065534B1 (en) 2017-03-03 2018-09-04 Ford Global Technologies, Llc Vehicle seats including bladders
CN111907458A (en) * 2020-07-29 2020-11-10 廊坊市金色时光科技发展有限公司 Pneumatic recognition device for human body weight of seat passenger and pneumatic recognition seat
CN111907457B (en) * 2020-07-29 2022-09-27 廊坊市金色时光科技发展有限公司 Recognition system for human body types of passengers and self-recognition seat
CN113103961B (en) * 2021-05-11 2022-08-09 承德石油高等专科学校 Roof travelling basket mounting structure and car

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022146A (en) * 1974-02-27 1977-05-10 Sadler Clinton P Fluid pressure controlled circuit breaker as boat safety apparatus
US5232243A (en) * 1991-04-09 1993-08-03 Trw Vehicle Safety Systems Inc. Occupant sensing apparatus
US5529377A (en) * 1993-06-25 1996-06-25 Mccord Winn Texton Air cell module for automotive seat
US5634685A (en) * 1995-03-20 1997-06-03 Herring; Charles Inflatable/deflatable motorcycle seat cushion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022146A (en) * 1974-02-27 1977-05-10 Sadler Clinton P Fluid pressure controlled circuit breaker as boat safety apparatus
US5232243A (en) * 1991-04-09 1993-08-03 Trw Vehicle Safety Systems Inc. Occupant sensing apparatus
US5529377A (en) * 1993-06-25 1996-06-25 Mccord Winn Texton Air cell module for automotive seat
US5634685A (en) * 1995-03-20 1997-06-03 Herring; Charles Inflatable/deflatable motorcycle seat cushion

Also Published As

Publication number Publication date
WO1999011483A1 (en) 1999-03-11
GB2333605B (en) 2001-10-10
GB9909432D0 (en) 1999-06-23
JP2001506009A (en) 2001-05-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee