Vehicular Seats with Fluid-Containing Weight Sensing Sysem

• US 20080042408A1
• Filed: 10/22/2007
• Published: 02/21/2008
• Est. Priority Date: 06/07/1995
• Status: Active Grant

• Current Assignee: American Vehicular Sciences LLC (Acacia Research Corporation), Broadcom Corporation (Broadcom, Inc.)
• Original Assignee: Automotive Technologies International Incorporated
• Inventors: Morin, Jeffrey, Breed, David, DuVall, Wilbur
• Granted Patent: US 7,770,920 B2
• Time in Patent Office: Days
• US Class Current: 280/734
• CPC Class Codes: B60J 10/00 Sealing arrangements
• CPC Class Codes: B60N 2/002 Seats provided with an occupancy detection means mounted therein or thereon detection means responsive to presence or absence of children B60N2/266
• CPC Class Codes: B60N 2/015 Attaching seats directly to vehicle chassis
• CPC Class Codes: B60N 2/02246 Electric motors therefor
• CPC Class Codes: B60N 2/0244 with logic circuits
• CPC Class Codes: B60N 2/0248 with memory of positions
• CPC Class Codes: B60N 2/0252 with relations between different adjustments, e.g. height of headrest following longitudinal position of seat
• CPC Class Codes: B60N 2/0268 using sensors or detectors for adapting the seat or seat part, e.g. to the position of an occupant
• CPC Class Codes: B60N 2/0272 using sensors or detectors for detecting the position of seat parts
• CPC Class Codes: B60N 2/0276 reaction to emergency situations, e.g. crash
• CPC Class Codes: B60N 2/067 by linear actuators, e.g. linear screw mechanisms
• CPC Class Codes: B60N 2/28 Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
• CPC Class Codes: B60N 2/2806 for securing the child seat to the vehicle
• CPC Class Codes: B60N 2/2863 backward facing
• CPC Class Codes: B60N 2/66 Lumbar supports
• CPC Class Codes: B60N 2/829 characterised by their adjusting mechanisms, e.g. electric motors
• CPC Class Codes: B60N 2/853 characterised by their adjusting mechanisms, e.g. electric motors
• CPC Class Codes: B60N 2/888 with arrangements for protecting against abnormal g-forces, e.g. by displacement of the head-rest
• CPC Class Codes: B60Q 1/143 combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
• CPC Class Codes: B60Q 2300/41 preceding vehicle
• CPC Class Codes: B60Q 2300/42 : oncoming vehicle
• CPC Class Codes: B60R 16/037 : for occupant comfort , e.g. for automatic adjustment of appliances according to personal settings, e.g. seats, mirrors, steering wheel
• CPC Class Codes: B60R 2001/1223 : with sensors or transducers
• CPC Class Codes: B60R 2001/1253 : with cameras, video cameras or video screens
• CPC Class Codes: B60R 2021/0027 : Post collision measures, e.g. notifying emergency services
• CPC Class Codes: B60R 2021/01315 : monitoring occupant displacement
• CPC Class Codes: B60R 2021/23153 : specially adapted for rear seat passengers
• CPC Class Codes: B60R 2021/26094 : characterised by fluid flow controlling valves
• CPC Class Codes: B60R 2021/2765 : comprising means to control the venting
• CPC Class Codes: B60R 2022/208 : by automatic or remote control means
• CPC Class Codes: B60R 2022/288 : with means to adjust or regulate the amount of energy to be absorbed
• CPC Class Codes: B60R 2022/4685 : with means to adjust or regulate the tensioning force in relation to external parameters
• CPC Class Codes: B60R 2022/4808 : Sensing means arrangements therefor
• CPC Class Codes: B60R 2022/4825 : for sensing amount of belt winded on retractor
• CPC Class Codes: B60R 21/013 : including means for detecting collisions, impending collisions or roll-over
• CPC Class Codes: B60R 21/0134 : responsive to imminent contact with an obstacle , e.g. using radar systems
• CPC Class Codes: B60R 21/0136 : responsive to actual contact with an obstacle , e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle monitoring crash strength in combination with passenger seat detection B60R21/01558
• CPC Class Codes: B60R 21/015 : including means for detecting the presence or position of passengers, passenger seats or child seats , and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
• CPC Class Codes: B60R 21/01516 : using force or pressure sensing means
• CPC Class Codes: B60R 21/0152 : using strain gauges
• CPC Class Codes: B60R 21/0153 : using field detection presence sensors
• CPC Class Codes: B60R 21/01532 : using electric or capacitive field sensors
• CPC Class Codes: B60R 21/01534 : using electromagneticwaves, e.g. infrared
• CPC Class Codes: B60R 21/01536 : using ultrasonic waves
• CPC Class Codes: B60R 21/01538 : for image processing, e.g. cameras or sensor arrays
• CPC Class Codes: B60R 21/01542 : detecting passenger motion
• CPC Class Codes: B60R 21/01544 : detecting seat belt parameters, e.g. length, tension or height-adjustment
• CPC Class Codes: B60R 21/01548 : sensing the amount of belt winded on retractor
• CPC Class Codes: B60R 21/01552 : detecting position of specific human body parts, e.g. face, eyes or hands
• CPC Class Codes: B60R 21/01554 : Seat position sensors
• CPC Class Codes: B60R 21/203 : in steering wheels or steering columns
• CPC Class Codes: B60R 21/21656 : Steering wheel covers or similar cup-shaped covers
• CPC Class Codes: B60R 21/276 : with means to vent the inflation fluid source, e.g. in case of overpressure B60R21/30 takes precedence; venting means on inflatable member walls B60R21/239
• CPC Class Codes: B60R 22/20 : adjustable in position, e.g. in height
• CPC Class Codes: B60R 22/201 : with the belt anchor connected to a slider movable in a vehicle-mounted track for passive restraint systems B60R22/06
• CPC Class Codes: B60R 25/25 : using biometry
• CPC Class Codes: E05F 15/43 : responsive to disruption of energy beams, e.g. light or sound
• CPC Class Codes: E05F 15/431 : specially adapted for vehicle windows or roofs
• CPC Class Codes: E05F 2015/433 : using reflection from the obstruction
• CPC Class Codes: E05Y 2900/55 : Windows
• CPC Class Codes: G01S 13/04 : Systems determining presence of a target based on relative movement of target G01S13/56
• CPC Class Codes: G01S 15/04 : Systems determining presence of a target
• CPC Class Codes: G01S 15/06 : Systems determining the position data of a target
• CPC Class Codes: G01S 15/87 : Combinations of sonar systems
• CPC Class Codes: G01S 15/88 : Sonar systems specially adapted for specific applications seismic or acoustic prospecting or detecting G01V1/00
• CPC Class Codes: G01S 17/88 : Lidar systems specially adapted for specific applications
• CPC Class Codes: G01S 17/89 : for mapping or imaging
• CPC Class Codes: G01S 7/417 : involving the use of neural networks
• CPC Class Codes: G01S 7/4802 : using analysis of echo signal for target characterisation; Target signature; Target cross-section
• CPC Class Codes: G01S 7/539 : using analysis of echo signal for target characterisation; Target signature; Target cross-section
• CPC Class Codes: G06V 20/59 : inside of a vehicle, e.g. relating to seat occupancy, driver state or inner lighting conditions
• CPC Class Codes: G06V 40/10 : Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
• CPC Class Codes: G10K 2210/1282 : Automobiles
• CPC Class Codes: G10K 2210/3219 : Geometry of the configuration

Abstract

System for measuring the weight of an occupant in a vehicle seat having a bottom portion and a back portion at an angle to the bottom portion and for controlling a safety restraint system responsive thereto which includes a fluid-containing bladder mounted within or beneath an upper surface of the bottom portion of the seat and supported by a base of the seat, a pressure sensor operatively coupled to the bladder for generating a signal responsive to pressure of the fluid within the bladder caused by pressure applied to the upper surface of the seat, and a processor coupled to the pressure sensor for determining the weight of the occupant from the signal and generating a control signal for controlling the safety restraint system responsive to the weight determination. The weight of the occupant can be used to control components in the vehicle or the seat itself.

Claims

1. A system for measuring the weight of an occupant in a vehicle seat having a bottom portion and a back portion at an angle to the bottom portion and for controlling a safety restraint system responsive thereto, comprising:

a bladder mounted within or beneath an upper surface of the bottom portion of the seat and supported by a base of the seat, said bladder being constructed from a flexible material and containing a fluid;

a pressure sensor operatively coupled to said bladder for generating a signal responsive to pressure of said fluid within said bladder caused by pressure applied to the upper surface of the seat; and

a processor coupled to said pressure sensor for determining the weight of the occupant from said signal and generating a control signal for controlling the safety restraint system responsive to said weight determination.

2. The system of claim 1, wherein said bladder includes a plurality of chambers.

3. The system of claim 1, wherein said bladder is part of a container including an additional enclosure.

4. The system of claim 1, wherein said pressure sensor is a transducer.

5. The system of claim 1, wherein said bladder is mounted within the bottom portion of the seat.

6. The system of claim 1, wherein said bladder is mounted beneath the upper surface of the bottom portion of the seat.

7. A system for controlling a safety restraint system responsive to the weight on a vehicle seat having a bottom portion and a back portion at an angle to the bottom portion, comprising:

a fluid containing means operatively coupled to the bottom portion of the seat for generating a pressure within the fluid responsive to the weight on the bottom portion of the vehicle seat;

a sensing means for sensing the pressure of said fluid; and

a control means for controlling the safety restraint system responsive to the pressure of said fluid as sensed by said sensing means.

8. The system of claim 7, wherein said fluid containing means includes a plurality of chambers.

9. The system of claim 7, wherein said fluid containing means is part of a container including an additional enclosure.

10. The system of claim 7, wherein said sensing means comprise a transducer.

11. The system of claim 7, wherein said fluid containing means are arranged within the bottom portion of the seat.

12. The system of claim 7, wherein said fluid containing means are arranged beneath an upper surface of the bottom portion of the seat.

13. A system for controlling a safety restraint system responsive to the weight on a vehicle seat, comprising:

a fluid confinement operatively coupled to the vehicle seat whereby the pressure of said fluid is responsive to the weight on the vehicle seat;

a pressure sensor operatively coupled to said fluid confinement for generating a signal responsive to the pressure of said fluid; and

a signal processor operatively coupled to said pressure sensor for controlling the safety restraint system responsive to said signal.

14. The system of claim 13, wherein said fluid confinement is a bladder.

15. The system of claim 13, wherein said fluid confinement includes a plurality of chambers.

16. The system of claim 13, wherein said pressure sensor is a transducer.

17. The system of claim 13, wherein said fluid confinement is mounted within the bottom portion of the seat.

18. The system of claim 13, wherein said fluid confinement is mounted beneath the upper surface of the bottom portion of the seat.