SE9001950D0 - SENSOR MAKES SPEED CHANGE WITH MAGNETIC FIELD CONCENTRATOR AND CONTROL - Google Patents

SENSOR MAKES SPEED CHANGE WITH MAGNETIC FIELD CONCENTRATOR AND CONTROL

Info

Publication number
SE9001950D0
SE9001950D0 SE9001950A SE9001950A SE9001950D0 SE 9001950 D0 SE9001950 D0 SE 9001950D0 SE 9001950 A SE9001950 A SE 9001950A SE 9001950 A SE9001950 A SE 9001950A SE 9001950 D0 SE9001950 D0 SE 9001950D0
Authority
SE
Sweden
Prior art keywords
magnetic field
magnet
sensor
control
speed change
Prior art date
Application number
SE9001950A
Other languages
Swedish (sv)
Other versions
SE500338C2 (en
SE9001950L (en
Inventor
H S Husby
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
Publication of SE9001950D0 publication Critical patent/SE9001950D0/en
Publication of SE9001950L publication Critical patent/SE9001950L/en
Publication of SE500338C2 publication Critical patent/SE500338C2/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/135—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by making use of contacts which are actuated by a movable inertial mass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Air Bags (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

An accelerometer sensor 10 for sensing velocity changes, particularly suited for passenger restraint systems in a motor vehicle for the deployment of an air bag, includes a housing 20 with a magnet 54 for biasing an inertia sensing element 36 towards a preselected position. A restricting element 56 is mounted around the magnet 54 for restricting and concentrating the magnetic field generated by the magnet 54 to the vicinity of the housing 20 whereby the material of an enclosure in which the sensor is disposed is unimportant. Two similar sensors may be housed in a single enclosure for additional sensitivity. The restrictive elements 56 of the sensors eliminate interference between the sensor magnetic fields. <IMAGE>
SE9001950A 1989-10-06 1990-05-31 Accelerometer sensor for sensing speed changes SE500338C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US41814789A 1989-10-06 1989-10-06

Publications (3)

Publication Number Publication Date
SE9001950D0 true SE9001950D0 (en) 1990-05-31
SE9001950L SE9001950L (en) 1991-04-07
SE500338C2 SE500338C2 (en) 1994-06-06

Family

ID=23656916

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9001950A SE500338C2 (en) 1989-10-06 1990-05-31 Accelerometer sensor for sensing speed changes

Country Status (7)

Country Link
JP (1) JPH03125976A (en)
CA (1) CA2026919C (en)
DE (1) DE4031330A1 (en)
FR (1) FR2652907B1 (en)
GB (1) GB2236622B (en)
IT (1) IT1241709B (en)
SE (1) SE500338C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4218867A1 (en) * 1991-06-11 1992-12-17 Breed Automotive Tech SPEED CHANGE SENSOR WITH A CYLINDRICAL MAGNET
JPH075993U (en) * 1993-07-05 1995-01-27 日本精工株式会社 Starter
DE29619060U1 (en) * 1996-11-02 1998-03-05 Stein, Wolfgang, 63776 Mömbris Device for increasing traffic safety in the flowing traffic of motor vehicles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557628A (en) * 1967-12-27 1971-01-26 Toyoda Chuo Kenkyusho Kk Accelerometer
US3737599A (en) * 1971-10-26 1973-06-05 Gulton Ind Inc Acceleration switch with magnetic permeable metal sleeve for shunting magnetic field
DE2620134C2 (en) * 1976-05-07 1986-01-02 Robert Bosch Gmbh, 7000 Stuttgart Device for position detection of moving bodies
US4329549A (en) * 1980-04-29 1982-05-11 Breed Corporation Magnetically biased velocity change sensor
IT1221909B (en) * 1987-04-28 1990-07-12 Fiat Auto Spa PROCEDURE AND MAGNETIC DETECTION DEVICE PARTICULARLY TO DETECT THE ANGULAR MOVEMENT PARAMETERS OF ROTATING ELEMENTS
JPH0697236B2 (en) * 1987-05-30 1994-11-30 株式会社日本自動車部品総合研究所 Acceleration sensor

Also Published As

Publication number Publication date
SE500338C2 (en) 1994-06-06
GB2236622A (en) 1991-04-10
SE9001950L (en) 1991-04-07
IT1241709B (en) 1994-01-31
DE4031330A1 (en) 1991-04-11
CA2026919A1 (en) 1991-04-07
CA2026919C (en) 1996-09-03
GB9021741D0 (en) 1990-11-21
GB2236622B (en) 1994-05-11
IT9067747A1 (en) 1992-04-02
IT9067747A0 (en) 1990-10-02
FR2652907A1 (en) 1991-04-12
FR2652907B1 (en) 1994-06-03
JPH03125976A (en) 1991-05-29

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