Optical seat occupation sensor network
First Claim
1. A sensor arrangement for detecting seat occupancy of a seat having a top seating surface area, whereina fiber-optic sensor network including at least two sensors distributed in a fiber network in the top seating surface area, andwherein an analysis of seat load distribution can be made on the basis of changes in sensor signals.
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Accused Products
Abstract
The invention relates to a sensor arrangement for seat occupation detection, comprising a fiber-optic sensor network consisting of at least two sensors. The sensor network detest for example local damping modifications in a fiber network that are caused by microbends or modifications of the Bragg wavelength of fiber-optic Bragg grating sensors (FBGS) distributed in the fiber network that are ceased by loads. The optical sensor network is resistant to electromagnetic parasitic inductions. Due to the nature of the optical lass or polymer optical fibers it is for example possible to integrate the network into the textile cover of the seat or into a cushion.
22 Citations
11 Claims
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1. A sensor arrangement for detecting seat occupancy of a seat having a top seating surface area, wherein
a fiber-optic sensor network including at least two sensors distributed in a fiber network in the top seating surface area, and wherein an analysis of seat load distribution can be made on the basis of changes in sensor signals.
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10. A vehicle occupant active restraint system comprising:
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a vehicle airbag passenger restraint system adapted to deploy in the event of a collision; a sensor arrangement for detecting seat occupancy of a seat having a top seating surface area, the sensor arrangement having a fiber-optic sensor network including at least two sensors distributed in a fiber network in the top seating surface area; an analysis module for determining seat load distribution on the basis of changes in sensor signals; and an airbag deployment module receiving signals from said analysis module and sending signals to one or more airbag to deploy said one or more airbag with a forcefulness correlated to the seat load distribution determined by said analysis module. - View Dependent Claims (11)
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Specification