US5653462A — Vehicle occupant position and velocity sensor

Claim 1

Independent Claim 83 words

In a motor vehicle containing an inflatable passive restraint system and a seat, a human occupant presence sensor comprising: (a) wave generator means; (b) means for mounting said wave generator to direct said waves toward said vehicle seat; (c) receptor means for receiving said waves which have been reflected from multiple points from the direction of said seat; and (d) pattern recognition means utilizing said received reflected waves at said receptor means to determine the presence of a human occupant in said seat.

Claim 2

Dependent Claim 83 words

In a motor vehicle containing an inflatable passive restraint system and a seat, a human occupant presence sensor comprising: (a) wave generator means; (b) means for mounting said wave generator to direct said waves toward said vehicle seat; (c) receptor means for receiving said waves which have been reflected from multiple points from the direction of said seat; and (d) pattern recognition means utilizing said received reflected waves at said receptor means to determine the presence of a human occupant in said seat.

Claim 3

Dependent Claim 92 words

In a motor vehicle having a human occupant, a vehicle human occupant chest position sensor comprising: at least one transmitter for transmitting waves toward said occupant; means for varying the direction of transmission of said transmitted waves over time whereby the center of the cross-section of said transmitted wave strikes said occupant at different points over time; at least one receiver for receiving waves from said transmitter and reflected off of said occupant; pattern recognition means for analyzing the signal waves received by said receiver to determine the position of said chest.

Claim 4

Dependent Claim 92 words

In a motor vehicle having a human occupant, a vehicle human occupant chest position sensor comprising: at least one transmitter for transmitting waves toward said occupant; means for varying the direction of transmission of said transmitted waves over time whereby the center of the cross-section of said transmitted wave strikes said occupant at different points over time; at least one receiver for receiving waves from said transmitter and reflected off of said occupant; pattern recognition means for analyzing the signal waves received by said receiver to determine the position of said chest.

Claim 5

Dependent Claim 22 words

The invention in accordance with claim 2 wherein said transmitted waves are radar waves and said receiver comprises a single axis antenna.

Claim 6

Dependent Claim 185 words

In a motor vehicle having a human occupant, a passive restraint in front of said occupant, an instrument panel, a windshield header, and a rear view mirror, said occupant having a head and a chest, a vehicle human occupant position sensor comprising: a) at least one transmitter for transmitting waves toward said occupant, said waves illuminating said chest of said occupant; b) at least one receiver for receiving said transmitted waves which have been reflected off of said chest of said occupant, each said receiver producing a signal characteristic of waves received at said receiver; c) means to mount at least one of said transmitters and at least one of said receivers onto said vehicle above the top surface of said instrument panel of said vehicle; d) analysis means connected to said at least one receiver, said means analyzing said at least one signal to determine the distance from said chest of said occupant to said passive restraint; and e) means to respond to said determined distance from said chest of said occupant to said passive restraint to affect the deployment of said passive restraint.

Claim 7

Dependent Claim 185 words

In a motor vehicle having a human occupant, a passive restraint in front of said occupant, an instrument panel, a windshield header, and a rear view mirror, said occupant having a head and a chest, a vehicle human occupant position sensor comprising: a) at least one transmitter for transmitting waves toward said occupant, said waves illuminating said chest of said occupant; b) at least one receiver for receiving said transmitted waves which have been reflected off of said chest of said occupant, each said receiver producing a signal characteristic of waves received at said receiver; c) means to mount at least one of said transmitters and at least one of said receivers onto said vehicle above the top surface of said instrument panel of said vehicle; d) analysis means connected to said at least one receiver, said means analyzing said at least one signal to determine the distance from said chest of said occupant to said passive restraint; and e) means to respond to said determined distance from said chest of said occupant to said passive restraint to affect the deployment of said passive restraint.

Claim 8

Dependent Claim 27 words

The invention in accordance with claim 4 wherein said mounting location above the top surface of said instrument panel of said vehicle comprises said rear view mirror.

Claim 9

Dependent Claim 26 words

The invention in accordance with claim 4 wherein said mounting location above the top surface of said instrument panel of said vehicle comprises said windshield header.

Claim 10

Dependent Claim 13 words

The apparatus of claim 4, said analysis means further comprising pattern recognition means.

Claim 11

Dependent Claim 11 words

The apparatus of claim 4 wherein said waves are ultrasonic waves.

Claim 12

Dependent Claim 11 words

The apparatus of claim 4 wherein said waves are electromagnetic waves.

Claim 13

Dependent Claim 20 words

The occupant position sensor of claim 4 comprising at least two of said transmitters and at least two said receivers.

Claim 14

Dependent Claim 17 words

The apparatus of claim 4 wherein at least one of said receivers comprises a charge coupled device.

Claim 15

Dependent Claim 21 words

The apparatus of claim 4 wherein said means to respond further comprises circuitry to disable the deployment of said passive restraint.

Claim 16

Dependent Claim 10 words

The apparatus of claim 4 wherein said restraint is inflatable.

Claim 17

Dependent Claim 48 words

The apparatus of claim 8 wherein the rate at which distance measurements are made using ultrasonic waves is such that said rate exceeds: two times the minimum distance to the occupant divided by the velocity of sound, said transmissions occurring such that associated receptions are known and distinguishable.

Claim 18

Dependent Claim 13 words

The apparatus of claim 4 wherein said responsive means further comprises an alarm.

Claim 19

Dependent Claim 19 words

The apparatus of claim 4 further comprising means to modulate the waves transmitted by said at least one transmitter.

Claim 20

Dependent Claim 11 words

The apparatus of claim 16 wherein said modulation is frequency modulation.

Claim 21

Dependent Claim 11 words

The apparatus of claim 16 wherein said modulation is amplitude modulation.

Claim 22

Dependent Claim 167 words

The apparatus of claim 7 wherein at least one said transmitter transmits infrared waves toward said chest and head of said occupant, said transmitter further comprising a) means to modulate said transmitted waves with a first signal at a first frequency; b) means to generate a second signal, said second signal having a second frequency slightly different from said first signal; c) at least one infrared receiver for receiving said waves transmitted from said transmitter and reflected off of said occupant, said receiver providing a third signal corresponding to said first frequency but shifted in phase; said apparatus further comprising i) means to combine said first signal with said second signal to produce a first beat signal; ii) means to combine said third signal with said second signal to produce a second beat signal; and iii) means to detect a phase shift between said first beat signal and said second beat signal, said phase shift being a measure of the distance of the occupant from said transmitter.

Claim 23

Dependent Claim 20 words

The apparatus of claim 11 wherein there are two spaced apart receivers, each said receiver comprising a charge coupled device.

Claim 24

Dependent Claim 149 words

In a motor vehicle having both driver and front seated passenger inflatable restraint systems, a driver having a chest and head and a front seated passenger, a dual deployment system comprising: crash sensor means for determining that a vehicle is experiencing a crash; deployment means for deploying the driver inflatable restraint system; deployment means for deploying the passenger inflatable restraint system; means for determining the position and velocity of the head of said driver relative to said driver inflatable restraint; means for preventing or delaying the deployment of said driver restraint system based on the position and velocity of said driver's head; means for determining the position and velocity of said front seated passenger relative to said passenger inflatable restraint; and means independent of said driver position and velocity, for preventing or delaying the deployment of said passenger restraint system based on the position and velocity of said passenger.

Claim 25

Dependent Claim 149 words

In a motor vehicle having both driver and front seated passenger inflatable restraint systems, a driver having a chest and head and a front seated passenger, a dual deployment system comprising: crash sensor means for determining that a vehicle is experiencing a crash; deployment means for deploying the driver inflatable restraint system; deployment means for deploying the passenger inflatable restraint system; means for determining the position and velocity of the head of said driver relative to said driver inflatable restraint; means for preventing or delaying the deployment of said driver restraint system based on the position and velocity of said driver's head; means for determining the position and velocity of said front seated passenger relative to said passenger inflatable restraint; and means independent of said driver position and velocity, for preventing or delaying the deployment of said passenger restraint system based on the position and velocity of said passenger.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2000-08-04	2001-02-03	2001-08-05	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2004-08-04	2005-02-03	2005-08-05	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2008-08-04	2009-02-03	2009-08-05	$7700.00	Window Closed / Lapsed

Vehicle occupant position and velocity sensor

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