Land vehicles – Wheeled – Attachment
Patent
1989-05-30
1990-12-25
Bertsch, Richard A.
Land vehicles
Wheeled
Attachment
180282, B60R 2132
Patent
active
049797638
ABSTRACT:
A method and apparatus is disclosed for controlling actuation of an air bag restraint system. A deceleration sensor provides a signal having an RMS value which is functionally related to the value of the vehicle deceleration. An RMS thermal converter converts the deceleration signal into a converted voltage value. The converted voltage value is compared against a predetermined value, the predetermined value being indicative of a maximum deceleration value. If the converted voltage value of the deceleration signal exceeds the predetermined value, the air bag is actuated. A forced feedback arrangement uses a differential amplifier and a second, similar thermal sensor arrangement in a balance circuit so as to eliminate common-mode voltage errors. The feedback arrangement retains the converted value of the deceleration signal for a predetermined time period after the deceleration signal decays.
REFERENCES:
patent: 3703300 (1972-11-01), Gillund et al.
patent: 3870894 (1975-03-01), Brede et al.
patent: 3911391 (1975-10-01), Held et al.
patent: 4020453 (1977-04-01), Spies et al.
patent: 4166641 (1979-09-01), Okada et al.
patent: 4410875 (1983-10-01), Spies et al.
patent: 4487025 (1985-01-01), Hannoyer
patent: 4638179 (1987-01-01), Mattes et al.
patent: 4804859 (1989-02-01), Swart
patent: 4842301 (1989-06-01), Feldmaier
patent: 4851705 (1989-07-01), Musser et al.
patent: 4873452 (1989-10-01), Morota et al.
patent: 4896898 (1990-01-01), Lenzen et al.
Specification Sheet for LT 1088, Linear Technology Corp.
Application Note 22, Linear Technology Corp.
RMS to DC Conversion Appln. Guide Analog Devices, pp. 1-11.
Specification Sheet for Accelerometer Model 3021 ICSensors.
Miniature Silicon Accelerometer With Built-In Damping by Stephen Terry.
Bertsch Richard A.
TRW Vehicle Safety Systems Inc.
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