Occupant position detection device and airbag deployment control system
First Claim
1. An occupant position detection device disposed inside a vehicle to detect a position of an occupant, the occupant position detection device including:
- a first detector comprising two or more first sensor electrodes disposed forward of a seat and at least one second sensor electrode disposed at a position more rearward and higher than the first sensor electrodes, the first detector outputting detection signals each corresponding to the respective first and second sensor electrodes, based on a distance between each of the sensor electrodes and the occupant; and
a computation unit inputted with the detection signals to compute an occupant position, the computation unit selecting from the detection signals outputted from the first detector at least three different pairs of the detection signals, and calculating a ratio or difference for each of the at least three pairs of the detection signals,wherein the computation unit specifies at least three surfaces each including the occupant position and each located between the respective pairs of the sensor electrodes, by using at least three of the calculated ratios or differences, calculates an intersection position of the at least three surfaces, and calculates the occupant position based on the calculated intersection position.
1 Assignment
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Accused Products
Abstract
An occupant position detection device is an occupant position detection device disposed inside a vehicle to detect a position of an occupant, and includes: a detector comprising two or more sensor electrodes disposed forward of a seat and at least one sensor electrode disposed at a position more rearward and higher than these sensor electrodes, the detector respectively outputting a detection signal based on a distance between each of the sensor electrodes and the occupant; and a computation unit inputted with the detection signal to compute an occupant position. The computation unit selects from the detection signals outputted from the detector three or more types of combinations configured from two of the detection signals, calculates a ratio or difference for each of these combinations of detection signals, and computes the occupant position based on the three or more calculated ratios or differences of the detection signals.
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Citations
15 Claims
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1. An occupant position detection device disposed inside a vehicle to detect a position of an occupant, the occupant position detection device including:
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a first detector comprising two or more first sensor electrodes disposed forward of a seat and at least one second sensor electrode disposed at a position more rearward and higher than the first sensor electrodes, the first detector outputting detection signals each corresponding to the respective first and second sensor electrodes, based on a distance between each of the sensor electrodes and the occupant; and a computation unit inputted with the detection signals to compute an occupant position, the computation unit selecting from the detection signals outputted from the first detector at least three different pairs of the detection signals, and calculating a ratio or difference for each of the at least three pairs of the detection signals, wherein the computation unit specifies at least three surfaces each including the occupant position and each located between the respective pairs of the sensor electrodes, by using at least three of the calculated ratios or differences, calculates an intersection position of the at least three surfaces, and calculates the occupant position based on the calculated intersection position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification