Load limiter configuration using multidimensional model

• US 9,855,908 B2
• Filed: 01/12/2016
• Issued: 01/02/2018
• Est. Priority Date: 01/12/2016
• Status: Active Grant

• Current Assignee: Tesla Inc.
• Original Assignee: Tesla Inc.
• Inventors: Cooper, John, Gopal, Madan, Luz, Bruno A, Zhang, Honglu
• Primary Examiner(s): To, Tuan C.
• Application Number:
  US14/993,368
• Publication Number:
  US 20170197574A1
• Time in Patent Office: 721 Days
• CPC Class Codes: B60R 21/01516 using force or pressure sensing means
• CPC Class Codes: B60R 21/01544 detecting seat belt parameters, e.g. length, tension or height-adjustment
• CPC Class Codes: B60R 21/01554 Seat position sensors

Abstract

A method includes: determining first and second row seat values using seat sensors; generating relative position data for the seats using the values; selecting a load limiter setting value using the relative position data and a multidimensional load limiter model including at least i) body impact values as a function of at least load limiter setting values and as a function of relative position values, and ii) restraint interaction values as a function of at least the load limiter setting values and as a function of the relative position values, the load limiter setting value selected so that the load limiter setting value is outside a first value avoidance zone defined for the body impact values, and outside a second value avoidance zone for the restraint interaction values; and configuring a second row restraint system in the vehicle with the selected load limiter setting value.

Claims

1. A method of configuring a load limiter in a second row of a vehicle where each of a first row seat and a second row seat is fore/aft adjustable, the method comprising:

determining a first row seat value using a first seat sensor on the first row seat;

determining a second row seat value using a second seat sensor on the second row seat;

generating relative position data for the first and second row seats using the first and second row seat values;

selecting a load limiter setting value using the relative position data, the load limiter setting value selected using a multidimensional load limiter model including at least i) body impact values as a function of at least load limiter setting values and as a function of relative position values, and ii) restraint interaction values as a function of at least the load limiter setting values and as a function of the relative position values, the load limiter setting value selected so that the load limiter setting value is outside a first value avoidance zone defined for the body impact values, and outside a second value avoidance zone for the restraint interaction values; and

configuring a second row restraint system in the vehicle with the selected load limiter setting value.

2. The method of claim 1, wherein the multidimensional load limiter model also depends on occupant weight, the method further comprising determining an occupant weight value for an occupant in the second row seat, and taking into account the occupant weight value in selecting the load limiter setting value.

3. The method of claim 2, wherein the multidimensional load limiter model depends on occupant weight categories, the method further comprising determining which of the occupant weight categories comprises the occupant weight value.

4. The method of claim 3, wherein the occupant weight categories include corresponding percentile values relative to a reference population.

5. The method of claim 1, wherein the load limiter setting value includes a force value, and wherein configuring the second row restraint system comprises setting a load limiter therein to perform belt payout when a force on the second row restraint system is approximately equal to the force value.

6. The method of claim 1, wherein the first row seat value includes a first fore/aft position value.

7. The method of claim 6, wherein the second row seat value includes a second fore/aft position value.

8. The method of claim 1, wherein at least one of the first and second row seat values includes a lift height value.

9. The method of claim 1, wherein at least one of the first and second row seat values includes a back recline position value.

10. The method of claim 1, wherein at least one of the first and second row seat values includes a tilt position value.

11. The method of claim 1, wherein at least one of the first and second row seat values includes a pitch position value.

12. The method of claim 11, wherein the pitch position value is for the second row seat in its entirety and whether a backrest of the second row seat is non-reclining.

13. The method of claim 1, wherein at least one of the first and second row seat values includes a lumbar support value.

14. The method of claim 13, wherein the lumbar support value reflects a lumbar support horizontal position.

15. The method of claim 13, wherein the lumbar support value reflects a lumbar support vertical position.

16. The method of claim 1, wherein at least one of the first and second row seat values includes a headrest position value.

17. The method of claim 1, wherein the first value avoidance zone comprises the body impact values being above a limit.

18. The method of claim 17, wherein the first value avoidance zone further comprises the body impact values indicating expected body contact with the first row seat.

19. The method of claim 1, wherein the second value avoidance zone comprises the restraint interaction values being above a limit.

20. The method of claim 1, wherein the multidimensional load limiter model takes into account crash severity, and wherein a crash severity value is used in selecting the load limiter setting value.