Occupant monitoring systems and methods

Patent metadata

Field	Value
Publication number	US-10990838-B2
Application number	US-202016840747-A
Country	US
Kind code	B2
Filing date	Apr 6, 2020
Priority date	Dec 30, 2014
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

Various implementations include a vehicle occupant imaging system that is disposed within a vehicle. The system includes an automotive clock spring, at least one imaging unit, and a first processing unit. The automotive clock spring includes a rotor to which a rotatable portion of the steering wheel assembly is coupled, a stator coupled to a stationary portion of the vehicle, and a set of wires extending between the rotor and stator. The imaging unit is coupled to the rotatable portion of the steering wheel assembly. The first processing unit is disposed within the rotor and is configured for electrically receiving image signals captured by the imaging unit and selecting at least a portion of the image signals for communicating to a second processing unit disposed outside of the rotor. The selected image signals are electrically communicated to the second processing unit via the set of electrical wires.

First claim

What is claimed is:

1. A vehicle occupant imaging system disposed within a vehicle, the vehicle occupant imaging system comprising:
an automotive clock spring disposed within a steering wheel assembly, the automotive clock spring comprising a rotor to which a rotatable portion of the steering wheel assembly is coupled,
a stator disposed radially adjacent the rotor and statically coupled within the steering column of the steering assembly, and
at least one set of electrical wires coupled between the rotor and the stator, the system further comprising:
at least one imaging unit configured for being coupled to the rotatable portion of the steering wheel assembly, the imaging unit having a field of view extending toward one or more vehicle occupants;
a first processing unit and a second processing unit;
wherein the first processing unit is disposed within the rotor of the automotive clock spring and receives image signals captured by the imaging unit and selects at least a portion of the image signals for communicating to the second processing unit, the second processing unit disposed outside of the rotor and within the steering column in the vehicle and electrically coupled to the set of electrical wires via the stator, wherein the selected image signals are electrically communicated through the set of electrical wires.

2. The vehicle occupant imaging system of claim 1 , wherein the first processing unit is further configured for electrically receiving at least one of an angle of rotation or rate of angular rotation of the steering wheel assembly and adjusting an orientation of the image signals based on the received angle of rotation or rate of angular rotation.

3. The vehicle occupant imaging system of claim 2 , wherein a steering angle sensor is disposed in the rotor, and the steering angle sensor is configured for acquiring the angle of rotation or rate of angular rotation and electrically communicating the acquired angle of rotation or rate of angular rotation to the first processing unit.

4. The vehicle occupant imaging system of claim 2 , wherein a steering angle sensor is disposed in the stator, and the steering angle sensor is configured for acquiring the angle of rotation or rate of angular rotation and electrically communicating the acquired angle of rotation or rate of angular rotation to the first processing unit via the set of electrical wires.

5. The vehicle occupant imaging system of claim 2 , wherein the first processing unit is further configured for compressing the selected image signals to communicate to the second processing unit, and the second processing unit is further configured for decompressing the compressed image signals.

6. The vehicle occupant imaging system of claim 1 , further comprising a length of wire that is configured for extending outwardly from the rotor of the automotive clock spring toward the rotatable portion of the steering wheel assembly and coupling the electrical connector to the first processing unit.

7. The vehicle occupant imaging system of claim 1 , further comprising at least one light source disposed adjacent the imaging unit, the light source configured for providing lighting in the field of view of the imaging unit, the light source configured for being in electrical communication with the first processing unit, wherein the first processing unit is configured for controlling an amount of light emitted from the light source.

8. The vehicle occupant imaging system of claim 7 , further comprising first and second electrical connectors, the first electrical connector configured for receiving electrical wires from the imaging unit, and the second electrical connector configured for receiving electrical wires from the light source, wherein the first electrical connector and the second electrical connector are coupled to the first processing unit.

9. The vehicle occupant imaging system of claim 8 , further comprising a first length of wire that is configured for extending outwardly from the rotor of the automotive clock spring toward the rotatable portion of the steering wheel assembly and coupling the first electrical connector to the first processing unit and a second length of wire that is configured for extending outwardly from the rotor of the automotive clock spring toward the rotatable portion of the steering wheel assembly and coupling the second electrical connector to the first processing unit.

10. The vehicle occupant imaging system of claim 1 , further comprising at least one light source configured for being disposed adjacent the imaging unit, the light source configured for providing lighting in the field of view of the imaging unit, the light source configured for being in electrical communication with the second processing unit via the set of electrical wires, wherein the second processing unit is configured for controlling an amount of light emitted from the light source.

11. The vehicle occupant imaging system of claim 10 , further comprising first and second electrical connectors, the first electrical connector configured for receiving an electrical connector from the imaging unit, and the second electrical connector configured for receiving an electrical connector from the light source, wherein the first electrical connector is configured for being coupled to the first processing unit, and the second electrical connector is configured for being coupled to the second processing unit via the set of electrical wires coupled between the rotor and the stator.

12. The vehicle occupant imaging system of claim 11 , wherein the first and second electrical connectors are each coupled to a length of wire extending outwardly from the rotor toward the rotatable portion of the steering wheel assembly, the length of wire of the first electrical connector coupling the first electrical connector to the first processing unit, and the length of wire of the second electrical connector configured for coupling the second electrical connector to the second processing unit via the set of wires coupled between the rotor and the stator.

13. The vehicle occupant imaging system of claim 1 , wherein the first processing unit is configured for being electrically coupled to a power source disposed within the vehicle, wherein power from the power source is available to the imaging unit via the set of electrical wires coupled between the rotor and stator.

14. The vehicle occupant imaging system of claim 1 , wherein the first processing unit is disposed on at least one arcuate-shaped printed circuit board.

15. The vehicle occupant imaging system of claim 14 , wherein the at least one arcuate-shaped printed circuit board comprises a plurality of arcuate-shaped printed circuit boards, the arcuate-shaped printed circuit boards being stacked relative to each other so as to fit within the rotor of the automotive clock spring.

16. The vehicle occupant imaging system of claim 14 , wherein the first processing unit is configured for saving at least a portion of the selected image signals to a memory, the memory being disposed on the arcuate-shaped printed circuit board.

17. The vehicle occupant imaging system of claim 1 , wherein the first processing unit is configured for saving at least a portion of the selected image signals to a memory, the memory configured for being disposed in the rotor.

18. The vehicle occupant imaging system of claim 1 , wherein selecting at least a portion of the image signals for communicating to the second processing unit comprises identifying and selecting one or more portions of the image signal related to one or mor

Assignees

• Joyson Safety Systems Acquisition Llc

Inventors

• Lisseman Jason Carl
• Cech Len

Classifications

• G06V20/597 Primary

  Recognising the driver's state or behaviour, e.g. attention or drowsiness · CPC title

• H04N7/18

  Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast · CPC title

• G06K9/00845 Primary

  Physics · mapped topic