Vehicle seat detecting system

• US 20070289800A1
• Filed: 06/19/2007
• Published: 12/20/2007
• Est. Priority Date: 06/20/2006
• Status: Abandoned Application

• Current Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Aoki, Hiroshi, Yokoo, Masato, Hakomori, Yuu
• Application Number:
  US11/812,492
• Publication Number:
  US 20070289800A1
• Time in Patent Office: Days
• US Class Current: 180/273
• 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: B60R 21/01554 Seat position sensors
• CPC Class Codes: G06T 2200/04 involving 3D image data
• CPC Class Codes: G06T 2207/10028 Range image; Depth image; 3D point clouds
• CPC Class Codes: G06T 7/74 involving reference images or patches
• 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 40/103 Static body considered as a whole, e.g. static pedestrian or occupant recognition

Abstract

A system is provided which is effective for precisely detecting the positional conditions of a vehicle seat. A vehicle seat detecting system which is installed in a vehicle employs a system for detecting a three-dimensional surface profile of a vehicle seat from a single view point by a camera to conduct a process for deriving information about a seat back shoulder region among respective regions of the vehicle seat and then to detect the positional conditions of the vehicle seat based on the derived information about the seat back shoulder region.

Claims

1. A vehicle seat detecting system, comprising:

an imaging device for detecting a three-dimensional surface profile of the vehicle seat from a single view point;

a controller including an image processor for digitizing the three-dimensional surface profile detected by the imaging device into a numerical coordinate system and a computational processor deriving information about a seat back shoulder region among respective regions of the vehicle seat based on the numerical coordinate system.

2. A vehicle seat detecting system as claimed in claim 1, further comprising a storage device for storing plural kinds of positional information of the seat back shoulder region, wherein the computational processor derives information, mostly matching the information detected by the imaging device, from the plural kinds of positional information previously stored in the storage device.

3. A vehicle seat detecting system as claimed in claim 1, wherein the computational processor is configured to scan a plurality of points in the numerical coordinate system corresponding to a portion of the seat along a vertical direction on the back side of a seat back side edge by scanning beams from the rear to the front of the vehicle and wherein the computational processor derives information about the seat back shoulder region based on the information about the plurality of points of the seat back side edge detected by the scanning.

4. A vehicle seat detecting system as claimed in claim 1, wherein the computational processor conducts a process for determining the positional condition of the vehicle seat based on the derived information about the seat back shoulder region.

5. An operation device controlling system comprising:

a vehicle seat detecting system as claimed in claim 4;

an operation device which is actuated based on the positional condition of the vehicle seat determined by the computational processor; and

an actuation controller for controlling the actuation of the operation device.

6. A vehicle comprising an engine/running system;

an electrical system;

an actuation controller for conducting the actuation control of the engine/running system and the electrical system; and

a vehicle seat detecting system as claimed in claim 4.

7. A vehicle seat detecting system, comprising:

an imaging device for detecting a three-dimensional surface profile of the vehicle seat from a single view point;

an image processor for digitizing the three-dimensional surface profile detected by the imaging device into a numerical coordinate system; and

a processor for conducting a process for deriving information about a seat back shoulder region among respective regions of the vehicle seat based on the numerical coordinate system of the three-dimensional surface profile digitized by the image processor.

8. A vehicle seat detecting system as claimed in claim 7, further comprising:

a storage device for storing plural kinds of positional information of the seat back shoulder region, wherein the processor derives information, mostly matching the information detected by the imaging device, as the information about the seat back shoulder region from the plural kinds of positional information previously stored in the storage device.

9. A vehicle seat detecting system as claimed in claim 7, wherein in the numerical coordinate system of the three-dimensional surface profile digitized by the image processor, the processor scans a plurality of points along a vertical direction on the back side of a seat back side edge by scanning beams from the rear to the front of the vehicle and derives information about the seat back shoulder region based on the information about the plurality of points of the seat back side edge detected by the scanning.

10. A vehicle seat detecting system as claimed in claims 7, wherein the processor conducts a process for determining the positional condition of the vehicle seat based on the derived information about the seat back shoulder region.

11. An operation device controlling system, comprising:

a vehicle seat detecting system as claimed in claim 10;

an operation device which is actuated based on the positional condition of the vehicle seat determined by the processor of the vehicle seat detecting system; and

an actuation controller for controlling the actuation of the operation device.

12. A vehicle, comprising:

an engine/running system;

an electrical system;

an actuation control device for conducting the actuation control of the engine/running system and the electrical system; and

a vehicle seat detection device for detecting positional condition of a vehicle seat, wherein the vehicle seat detection device comprises a vehicle seat detecting system as claimed in claim 10.

13. A seat detecting method, comprising the steps of:

detecting a three-dimensional surface profile of the vehicle seat from a single view point;

digitizing the detected three-dimensional surface profile into a numerical coordinate system;

deriving information about a seat back shoulder region among respective regions of the vehicle seat based on the numerical coordinate system; and

storing the information about the seat back shoulder region.

14. The seat detecting method of claim 13, further comprising the step of:

storing plural kinds of positional information of the seat back shoulder region, from which in combination with the detected three-dimensional surface profile, the information about the seat back shoulder region is derived.

15. The seat detecting method of claim 13, wherein the digitizing step further comprises:

scanning a plurality of points along a vertical direction on the back side of a seat back side edge by scanning beams from the rear to the front of the vehicle.

16. The seat detecting method of claim 15, wherein the deriving step further comprises:

deriving information about the seat back shoulder region based on the information about the plurality of points of the seat back side edge detected by the scanning.

17. The seat detecting method of claim 13, further comprising the step of determining the positional condition of the vehicle seat based on the derived information about the seat back shoulder region.