Child restraint system and method for monitoring installation of the child restraint system

• US 7,478,875 B2
• Filed: 06/06/2005
• Issued: 01/20/2009
• Est. Priority Date: 06/07/2004
• Status: Active Grant

• Current Assignee: Aptiv Technologies AG
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Porter, Stephen B., Wallner, Edward J., Sullivan, Stuart S., Lawrence, Rodney A., Fultz, William W., Kincaid, Kevin D., Fortune, Duane D., Patterson, James F.
• Primary Examiner(s): Dunn; David R
• Assistant Examiner(s): GARRETT, ERIKA P
• Application Number:
  US11/147,148
• Publication Number:
  US 20050275258A1
• Time in Patent Office: 1,324 Days
• Field of Search: 297/250.1, 297/217.3, 297/217.2, 280/735, 340/457.1
• US Class Current: 297/217.3
• 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 2/0244 with logic circuits
• CPC Class Codes: B60N 2/0272 using sensors or detectors for detecting the position of seat parts
• CPC Class Codes: B60N 2/2806 for securing the child seat to the vehicle
• CPC Class Codes: B60N 2/2809 with additional tether connected to the top of the child seat and passing above the top of the back-rest
• CPC Class Codes: B60N 2/2812 for securing the child to the child seat
• CPC Class Codes: B60N 2/2821 having a seat and a base part
• CPC Class Codes: B60N 2/2824 part of the base being supported by the vehicle frame B60N2/289 takes precedence
• CPC Class Codes: B60N 2/2842 adapted to carry the child, when dismounted from the vehicle
• CPC Class Codes: B60N 2/2845 having handles
• CPC Class Codes: B60N 2/286 forward facing B60N2/2866 takes precedence
• CPC Class Codes: B60N 2/2863 backward facing
• CPC Class Codes: B60N 2/2875 inclinable, as a whole or partially
• CPC Class Codes: B60N 2/2881 Upholstery, padded or cushioned members therefor
• CPC Class Codes: B60N 2/2887 Fixation to a transversal anchorage bar, e.g. isofix
• CPC Class Codes: B60N 2002/2815 with additional belt accessories, e.g. a belt tension detector

Abstract

A child restraint system and a method for monitoring installation of the child restraint system are provided. The child restraint system includes a child seat configured to receive a child occupant. The child restraint system further includes a first sensor coupled to the child seat. The first sensor is configured to output a first signal indicative of positional angle of the child seat relative to a first axis. The child restraint system further includes a controller coupled to the child seat configured to receive the first signal and to calculate a first angle value based on the first signal. The controller is further configured to induce a first device disposed on the child seat to indicate when the first angle value is not within a predetermined angular range from the first axis.

Claims

1. A child restraint system adapted to be mounted within a vehicle, the child restraint system comprising:

a child seat configured to receive a child occupant, the child seat further configured to be removably secured to a vehicle seat;

a first sensor coupled to the child seat, the first sensor configured to output a first signal indicative of positional angle of the child seat relative to a first axis; and

a controller coupled to the child seat configured to receive the first signal and to calculate a first angle value based on the first signal, the controller further configured to induce a first device disposed on the child seat to indicate visually or audibly when the first angle value is not within a predetermined angular range from the first axis.

2. The child restraint system of claim 1, wherein the first sensor comprises a z-axis accelerometer sensor configured to adjust an amplitude of the first signal based on an angular position of the child seat.

3. The child restraint system of claim 1, wherein the first sensor comprises an x-axis accelerometer sensor configured to adjust an amplitude of the first signal based on an angular position of the child seat.

4. The child restraint system of claim 1, further comprising a second sensor configured to output a second signal indicative of the weight of child occupant, the controller further configured to reccive the second signal and to calculate the predetermined angular range value based on the second signal.

5. The child restraint system of claim 1, wherein the second sensor comprises a pressure sensor disposed on the child seat.

6. The child restraint system of claim 1, wherein the first device comprises a light-emitting diode, the controller configured to induce the light-emitting diode to emit light having a first color when the first angle value is not within the predetermined angular range.

7. The child restraint system of claim 1, wherein the first device comprises an electrical annunciator, the controller configured to induce the electrical annunciator to emit a first audible sound when the first angle value is not within the predetermined angular range, the controller further configured to induce the electrical annunciator to emit a second audible sound when the first angie value is within the predetermined angular range.

8. The child restraint system of claim 1, wherein the first device comprises a liquid-crystal display, the controller configured to induce the liquid-crystal display to display a first message when the first angle value is not within the predetermined angular range, the controller further configured to induce the liquid-crystal display to display a second message when the first angle value is within the predetermined angular range.

9. The child restraint system of claim 1, wherein the controller is further configured to induce a second device to indicate when the first angle value is within the predetermined angular range.

10. The child restraint system of claim 9, wherein the second device comprises a light-emitting diode, the controller further configured to induce the light-emitting diode to emit light having a first color when the first angle value is within the predetermined angular range.

11. The child restraint system of claim 1, wherein the child seat comprises a rearward-facing child seat with respect to the vehicle seat.

12. The child restraint system of claim 1, wherein the child seat comprises a frontward-facing child seat with respect to the vehicle seat.

13. A method for monitoring installation of a child restraint system on a vehicle seat, the child restraint system having a child seat configured to receive a child occupant, the method comprising:

outputting a first signal from a first sensor disposed on the child seat, the first signal indicative of a positional angle of the child seat relative to a first axis, the child seat configured to be removably secured to the vehicle seat;

calculating a first angle value based on the first signal utilizing a controller; and

inducing a first device disposed on the child seat to indicate visually or audibly when the first angle value is not within a predetermined angular range from the first axis.

14. The method of claim 13, further comprising:

outputting a second signal from a second sensor disposed on the child seat, the second signal indicative of a weight of the child occupant; and

calculating the predetermined angular range based on the second signal utilizing the controller.

15. The method of claim 13, further comprising:

positioning the child seat on a vehicle seat; and

outputting a second signal from the first sensor disposed on the child seat; and

determining the first axis based on the second signal.

16. The method of claim 13, wherein the first device comprises a light-emitting diode, and the step of inducing the first device disposed on the child seat to indicate when the first angle value is not within the predetermined angular range comprises inducing the light-emitting diode to emit light having a first color when the first angle value is not within the predetermined angular range.

17. The method of claim 13, wherein the first device comprises an electrical annunciator, and the step inducing the first device disposed on the child seat to indicate when the first angle value is not within the predetermined angular range comprises inducing the electrical annunciator to emit a first audible sound when the first angle value is not within the predetermined angular range.

18. The method of claim 13, wherein the first device comprises a liquid-crystal display, and the step of inducing the first device to indicate when the first angle value is not within the predetermined angular range comprises inducing the liquid-crystal display to display a first message when the first angle value is not within the predetermined angular range.

19. The method of claim 13, further comprising inducing a second device to indicate when the first angle value is within the predetermined angular range.

20. The method of claim 19, wherein the second device comprises a light-emitting diode, and the step of inducing the second device to indicate when the first angle value is within the predetermined angular range, comprises inducing the light-emitting diode to emit light having a first color when the first angle value is within the predetermined angular range.

21. A child restraint system adapted to be mounted within a vehicle, the child restraint system comprising:

a unitary child seat configured to receive a child occupant, the unitary child seat further configured to be removably secured to a vehicle seat;

a first sensor coupled to the unitary child seat, the first sensor configured to output a first signal indicative of positional angle of the unitary child seat relative to a first axis; and

a controller coupled to the unitary child seat configured to receive the first signal and to calculate a first angle value based on the first signal, the controller further configured to induce a first device disposed on the unitary child seat to indicate visually or audibly when the first angle value is not within a predetermined angular range from the first axis.

22. A child restraint system adapted to be mounted within a vehicle, the child restraint system comprising:

a child seat configured to receive a child occupant, the child seat further configured to be removably secured to a vehicle seat;

a first sensor coupled to the child seat, the first sensor configured to output a first signal indicative of positional angle of the child seat relative to a first axis; and

a controller coupled to the child seat configured to receive the first signal and to calculate a first angle value based on the first signal, the controller further configured to induce a light emitting diode disposed on the child seat to emit light to indicate when the first angle value is not within a predetermined angular range from the first axis.

23. A child restraint system adapted to be mounted within a vehicle, the child restraint system comprising:

a child scat configured to receive a child occupant, the child seat further configured to be removably secured to a vehicle seat;

a first sensor coupled to the child scat, the first sensor configured to output a first signal indicative of positional angle of the child seat relative to a first axis; and

a controller coupled to the child seat configured to receive the first signal and to calculate a first angle value based on the first signal, the controller further configured to induce an electrical enunciator disposed on the child seat to emit sound to indicate when the first angle value is not within a predetermined angular range from the first axis.

24. A child restraint system adapted to be mounted within a vehicle, the child restraint system comprising:

a child seat configured to receive a child occupant, the child seat further configured to be removably secured to a vehicle seat;

a first sensor coupled to the child seat, the first sensor configured to output a first signal indicative of positional angle of the child seat relative to a first axis; and

a controller coupled to the child seat configured to receive the first signal and to calculate a first angle value based on the first signal, the controller further configured to induce an liquid-crystal display disposed on the child seat to display a first message to indicate when the first angle value is not within a predetermined angular range from the first axis.