Vehicle accessory control circuit

• US 10,336,361 B2
• Filed: 04/04/2017
• Issued: 07/02/2019
• Est. Priority Date: 04/04/2016
• Status: Active Grant

• Current Assignee: Joyson Safety Systems Acquisition, LLC
• Original Assignee: Joyson Safety Systems Acquisition, LLC
• Inventors: Olson, Corey Christopher, Hengel, Molly Kay, Bauer, John Christopher, Jacewicz, Ryan Edward, Garcia, Edgar Fernando
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Pham, Duc M
• Application Number:
  US15/478,945
• Publication Number:
  US 20170282953A1
• Time in Patent Office: 819 Days
• CPC Class Codes: B60K 2360/143 Touch sensitive instrument input devices
• CPC Class Codes: B60K 2360/1446 Touch switches
• CPC Class Codes: B60K 2360/782 on the steering wheel
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60K 35/10 Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
• CPC Class Codes: B60K 35/60 Instruments characterised by their location or relative disposition in or on vehicles arrangements of lighting devices on dashboards B60Q3/10
• CPC Class Codes: B62D 1/046 Adaptations on rotatable parts of the steering wheel for accommodation of switches
• CPC Class Codes: H03K 17/962 Capacitive touch switches
• CPC Class Codes: H03K 17/9622 using a plurality of detectors, e.g. keyboard
• CPC Class Codes: H03K 2217/960765 Details of shielding arrangements

Abstract

A vehicle accessory control circuit includes a processor electrically connected to a power source and a memory, the processor executing computer readable instructions stored on the memory to configure the accessory control circuit and an accessory control output. The control circuit includes at least one capacitive touch assembly having an electrically conductive conduit shielded by a portion of a steering mechanism of the vehicle. The capacitive touch assembly is connected to the power source and the processor such that the conduit is configured to transmit a capacitance input data signal to the processor to adjust the accessory control output. The capacitance input data signal is varied by a conductive touch object such as a human finger or palm to manipulate the output from the accessory system.

Claims

1. A vehicle accessory control circuit, comprising:

a processor electrically connected to a power source and a memory, the processor executing computer readable instructions stored on the memory to configure the accessory control circuit and an accessory control output;

at least one capacitive touch assembly coupled to a steering mechanism of the vehicle, the capacitive touch assembly comprising;

a polymer layer;

an electrically conductive conduit at least partially encased within the polymer layer and connected at opposite ends to the power source and the processor such that said conduit transmits a capacitance input data signal to the processor to adjust the accessory control output.

2. A vehicle accessory control circuit according to claim 1, wherein said accessory control output adjusts at least one of a horn output, a windshield wiper system, a cruise control system, an audio system, a video system, or a lighting system.

3. A vehicle accessory control circuit according to claim 1, wherein said electrically conductive conduit is an electrically conductive wire.

4. A vehicle accessory control circuit according to claim 1, wherein said electrically conductive conduit is a conductive wire mesh in said polymer layer.

5. A vehicle accessory control circuit according to claim 1, wherein said electrically conductive conduit is a printed circuit within said polymer layer.

6. A vehicle accessory control circuit according to claim 1, said capacitive touch assembly further comprising a touch layer having a first side and an exposed side, wherein the first side of said touch layer is coupled to said polymer layer, and said exposed side of said touch layer is positioned to receive a touching object, wherein capacitance between the conductive wire and the touching object in contact with the polymer layer varies the capacitance input data signal transmitted to the processor to adjust the accessory control output.

7. A vehicle accessory control circuit according to 1, wherein said polymer layer and said electrically conductive conduit define multiple zones having respective capacitive touch responses within said polymer layer, said zones having respective connections to said processor and providing respective capacitive touch input signals that adjust the accessory control output.

8. A vehicle accessory control circuit, comprising:

a processor connected to a power source and a memory, the processor executing computer readable instructions stored on the memory to configure the accessory control circuit;

at least one capacitive touch assembly coupled to a steering mechanism of the vehicle, the capacitive touch assembly transmitting a capacitance input data signal to the processor, the capacitive touch assembly comprising a touch layer extending over at least one conductive layer, such that the touch layer is exposed on an outer surface opposite the conductive layer; and

wherein the conductive layer is in electronic communication with the power source and the processor and conducts the capacitance input data signal, from the capacitive touch assembly to the processor to adjust an accessory control output, wherein capacitance between the conductive layer and a touching object in contact with the outer surface of the touch layer varies the capacitance input data signal transmitted to the processor to adjust the accessory control output.

9. A vehicle accessory control circuit according to claim 8, wherein said accessory control output adjusts at least one of a horn output, a windshield wiper system, a cruise control system, an audio system, a video system, and a lighting system.

10. A vehicle accessory control circuit according to claim 8 wherein said capacitive touch assembly comprises a wire positioned proximate the at least one conductive layer.

11. A vehicle accessory control circuit according to claim 8, wherein said capacitive touch assembly comprises a wire mesh positioned proximate the at least one conductive layer.

12. A vehicle accessory control circuit according to claim 8, wherein said capacitive touch assembly comprises a coating.

13. A vehicle accessory control circuit according to claim 8, wherein said capacitive touch assembly comprises a printed circuit within the at least one conductive layer.

14. A vehicle accessory control circuit according to claim 8, wherein said conductive layer comprises a flexible polymeric sheet having a plurality of carbon nanobuds defining a conductive path through said conductive layer.

15. A vehicle accessory control circuit according to claim 8, wherein the capacitance varies while the capacitive touch assembly remains stationary.

16. A vehicle accessory actuation system comprising:

a vehicle accessory control circuit connecting a vehicle accessory to a power source, a processor, and a memory, wherein the processor executes computer readable instructions stored on the memory to configure the vehicle accessory control circuit and a vehicle accessory output;

at least one capacitive touch assembly coupled to a steering mechanism of the vehicle and transmitting a capacitance input data signal to the processor, wherein the capacitive touch assembly comprises;

a touch layer having a first side and an exposed side; and

at least one conductive layer coupled to the first side of the touch layer and in electronic communication with the power source and the processor such that the conductive layer transmits a capacitance input data signal to the processor to adjust the vehicle accessory output;

wherein an air bag module is coupled to the steering mechanism, the air bag module having a cover disposed within the perimeter of the steering mechanism, and

wherein the at least one capacitive touch assembly is disposed adjacent the cover.

17. A vehicle accessory actuation system according to claim 16,

wherein the capacitance input data signal varies as a touch object contacting the exposed side of the touch layer changes the capacitance exhibited in the conductive layer, and

wherein corresponding changes in the capacitance input data signal are transmitted to the processor to adjust the vehicle accessory output.

18. A vehicle accessory actuation system according to claim 16, wherein the at least one conductive layer comprises a conductive path therein, said conductive path defined by at least one of a conductive wire, a wire mesh, a printed circuit, a coating, a carbon nanotube assembly, and a carbon nanobud assembly.

19. A vehicle accessory actuation system according to claim 16, wherein said at least one conductive layer comprises a conductive path through said conductive layer, and said conductive path traverses a section of the cover defined by tear seams in the cover, wherein said capacitive touch assembly comprises perforations that match said tear seams on said cover.

20. A vehicle accessory control circuit according to claim 16, wherein said accessory control output adjusts a horn output, a windshield wiper system, a cruise control system, an audio system, a video system, or a lighting system.