Seat position sensing and adjustment
First Claim
1. An occupant-support sensing system comprisingan occupant support including a seat bottom adapted to couple to a floor to move back and forth along a longitudinal axis relative to the floor and a seat back coupled to the seat bottom and arranged to extend upwardly away from the seat bottom to pivot about an axis relative to the seat bottom,a support-orientation unit including a floor-orientation accelerometer coupled to the floor in a fixed position relative to the floor and configured to sense a gravity-based incline angle of the floor and a seat-back accelerometer coupled to the seat back to move therewith relative to the seat bottom and the floor and configured to sense a gravity-based recline angle of the seat back, anda support-motion controller coupled to the occupant support and the support-orientation unit and configured to calculate a floor-incline angle using data received from the floor-orientation accelerometer, an actual seat-back angle using data received from the seat-back accelerometer, and an adjusted seat-back angle using the floor-incline angle and the actual seat-back angle,wherein the support-motion controller includes a position calculator configured to calculate the adjusted seat-back angle using the floor-incline angle and the actual seat-back angle andwherein the position calculator calculates the adjusted seat-back angle by subtracting the floor-incline angle from the actual seat-back angle.
1 Assignment
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Accused Products
Abstract
A vehicle seat includes a seat foundation coupled to a floor of a vehicle, a seat bottom coupled to the seat foundation to move back and forth along a longitudinal axis relative to the floor, and a seat back coupled to the seat bottom to extend upwardly away from the seat bottom. The seat back pivots about an axis relative to the seat bottom.
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Citations
18 Claims
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1. An occupant-support sensing system comprising
an occupant support including a seat bottom adapted to couple to a floor to move back and forth along a longitudinal axis relative to the floor and a seat back coupled to the seat bottom and arranged to extend upwardly away from the seat bottom to pivot about an axis relative to the seat bottom, a support-orientation unit including a floor-orientation accelerometer coupled to the floor in a fixed position relative to the floor and configured to sense a gravity-based incline angle of the floor and a seat-back accelerometer coupled to the seat back to move therewith relative to the seat bottom and the floor and configured to sense a gravity-based recline angle of the seat back, and a support-motion controller coupled to the occupant support and the support-orientation unit and configured to calculate a floor-incline angle using data received from the floor-orientation accelerometer, an actual seat-back angle using data received from the seat-back accelerometer, and an adjusted seat-back angle using the floor-incline angle and the actual seat-back angle, wherein the support-motion controller includes a position calculator configured to calculate the adjusted seat-back angle using the floor-incline angle and the actual seat-back angle and wherein the position calculator calculates the adjusted seat-back angle by subtracting the floor-incline angle from the actual seat-back angle.
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5. An occupant-support sensing system comprising
an occupant support including a seat bottom adapted to couple to a floor to move back and forth along a longitudinal axis relative to the floor and a seat back coupled to the seat bottom and arranged to extend upwardly away from the seat bottom to pivot about an axis relative to the seat bottom, a support-orientation unit including a floor-orientation accelerometer coupled to the floor in a fixed position relative to the floor and configured to sense a gravity-based incline angle of the floor and a seat-back accelerometer coupled to the seat back to move therewith relative to the seat bottom and the floor and configured to sense a gravity-based recline angle of the seat back, and a support-motion controller coupled to the occupant support and the support-orientation unit and configured to calculate a floor-incline angle using data received from the floor-orientation accelerometer, an actual seat-back angle using data received from the seat-back accelerometer, and an adjusted seat-back angle using the floor-incline angle and the actual seat-back angle, wherein the support-motion controller includes a position calculator configured to calculate the adjusted seat-back angle using the floor-incline angle and the actual seat-back angle and wherein the support-motion controller is further configured to determine a rotational speed of the seat back relative to the seat bottom and predict a future adjusted seat-back angle using the actual seat-back angle, the floor-incline angle, and the rotational speed of the seat back.
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8. An occupant-support sensing system comprising
an occupant support including a seat bottom adapted to couple to a floor to move back and forth along a longitudinal axis relative to the floor and a seat back coupled to the seat bottom and arranged to extend upwardly away from the seat bottom to pivot about an axis relative to the seat bottom, a support-orientation unit including a floor-orientation accelerometer coupled to the floor in a fixed position relative to the floor and configured to sense a gravity-based incline angle of the floor and a seat-back accelerometer coupled to the seat back to move therewith relative to the seat bottom and the floor and configured to sense a gravity-based recline angle of the seat back, and a support-motion controller coupled to the occupant support and the support-orientation unit and configured to calculate a floor-incline angle using data received from the floor-orientation accelerometer, an actual seat-back angle using data received from the seat-back accelerometer, and an adjusted seat-back angle using the floor-incline angle and the actual seat-back angle, wherein the seat back includes a backrest coupled to the seat bottom to rotate about the axis relative to the seat bottom and a headrest coupled to the backrest to move therewith and locate the backrest between the headrest and the seat bottom and the seat-back accelerometer is coupled to the backrest between the axis and the headrest.
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10. An occupant-support sensing system comprising
an occupant support including a seat bottom adapted to couple to a floor to move back and forth along a longitudinal axis relative to the floor and a seat back coupled to the seat bottom and arranged to extend upwardly away from the seat bottom to pivot about an axis relative to the seat bottom, a support-orientation unit including a floor-orientation accelerometer coupled to the floor in a fixed position relative to the floor and configured to sense a gravity-based incline angle of the floor and a seat-back accelerometer coupled to the seat back to move therewith relative to the seat bottom and the floor and configured to sense a gravity-based recline angle of the seat back, and a support-motion controller coupled to the occupant support and the support-orientation unit and configured to calculate a floor-incline angle using data received from the floor-orientation accelerometer, an actual seat-back angle using data received from the seat-back accelerometer, and an adjusted seat-back angle using the floor-incline angle and the actual seat-back angle, wherein the support-orientation unit further includes a linear-position accelerometer coupled to the seat bottom to move therewith relative to the floor and configured to sense a gravity-based rotation angle of the linear-position accelerometer relative to the seat bottom.
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17. An occupant-support sensing system comprising
an occupant support including a seat bottom adapted to couple to a floor to move back and forth along a longitudinal axis relative to the floor and a seat back coupled to the seat bottom and arranged to extend upwardly away from the seat bottom to pivot about an axis relative to the seat bottom, a support-orientation unit including a floor-orientation accelerometer coupled to the floor in a fixed position relative to the floor and configured to measure and output accelerations relative to gravity of the floor and a seat-back accelerometer coupled to the seat back to move therewith and configured to measure and output accelerations relative to gravity of the seat back, and a support-motion controller coupled to the occupant support and the support-orientation unit and configured to calculate a floor-incline angle using output accelerations of the floor-orientation accelerometer, an actual seat-back angle using output accelerations of the seat-back accelerometer, and an adjusted seat-back angle using the floor-incline angle and the actual seat-back angle.
Specification