05482314 is referenced by 160 patents and cites 53 patents.

A system for sensing the presence, position and type of an occupant in a passenger seat of a vehicle, as well as for sensing the presence of a rear-facing child seat therein, for use in enabling or disabling a related airbag activator. The sensor system employs sensor-fusion, a process of combining information provided by two or more sensors, each of which "sees" the world in a unique sense. In a preferred embodiment, occupancy sensor samples two detectable properties, a first being a thermal signature and associated motion, and a second is acoustically measured distance and the associated motion. Infrared sensor inputs and an ultrasonic sensor input are combined in a microprocessor circuit by means of a sensor fusion algorithm to produce an output signal to the air bag controller. The output signal results from preselected confidence weighing for feature parameters generated by the two sensors and upon a fusion process which ultimately makes a decision which is extremely reliable. The sensor fusion matrix processes the sensor outputs in a decision making operation which includes weighing inputs to guarantee reliability. All sensor outputs, along with calibration data, initial conditions and historical reference data are considered in the process of making a decision of whether or not to deploy the passenger-side air bag in a collision.

Title
Automotive occupant sensor system and method of operation by sensor fusion
Application Number
8/227531
Publication Number
5482314
Application Date
April 12, 1994
Publication Date
January 9, 1996
Inventor
Paul K Benbow
Upland
CA, US
Stephen W Decker
La Cresenta
CA, US
Anthony P Corrado
Upland
CA, US
Agent
Jacques M Dulin
Assignee
Aerojet General Corporation
OH, US
IPC
B60R 21/32
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