System and method for near field communication coupling in a vehicle

Patent metadata

Field	Value
Publication number	US-11265381-B2
Application number	US-201916368119-A
Country	US
Kind code	B2
Filing date	Mar 28, 2019
Priority date	Mar 28, 2018
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

An electric field personal seat communication protocol within an inductive charging supporting near field communication (NFC) chipset is positioned in respective portions of a vehicle and a personal communications device. Such a chipset can then be utilized to support safety and security applications including the reduction of driver distraction due to cellular phone use at inappropriate times, improved security of vehicle based wireless network based on occupancy detection (E-field sensor 20) and secondary BAN between the seat sensor and NFC enabled devices held/possessed by the occupant. Alternatively, the E-field sensor function could be integrated directly into an NFC chipset that supports the PSC E-field communication protocol.

First claim

The invention claimed is:

1. A system for controlling a personal communication device in a vehicle, the system comprising:
a first near field communication circuit positioned on a component inside the vehicle, the first near field communication circuit comprising an occupancy sensing electrode in data communication with a first inductive coil wherein the component inside the vehicle is configured to establish a body area network in the vehicle;
a second near field communication circuit positioned within a personal communications device, the second near field communication circuit comprising an inductive transceiver in data communication with a second inductive coil;
wherein the body area network comprises a human body medium inductively coupling respective electric fields from the first near field communication circuit and the second near field communication circuit;
wherein the first near field communication circuit and the second near field communication circuit are configured for communicating via inductive coupling across the body area network; and
wherein the first near field communication circuit transmits control data from the component inside the vehicle to the second near field communication circuit in the personal communications device.

2. A system according to claim 1 , wherein the control data from the component inside the vehicle is transmitted directly to at least one control circuit in the personal communications device.

3. A system according to claim 2 , wherein the control circuit in the personal communications device is at least one of an operating system, a charging circuit, a power circuit, a communications display circuit, and a communications transceiver circuit.

4. A system according to claim 1 , wherein the component in the vehicle is a vehicle seat, and the body in the vehicle is a human body positioned on the vehicle seat such that the vehicle seat and the human body form a personal seat communications system configured for communicating with the second near field communication circuit in the personal communications device via the body area network.

5. A system according to claim 4 , wherein the occupancy sensor is a first electric field sensor and wherein the inductive transceiver in the personal communications device is in data communication with a second electric field sensor positioned within the personal communications device.

6. A system according to claim 1 , wherein the inductive coupling between the first and second near field communication circuits is established according to a personal seat communications electric field protocol.

7. A system according to claim 1 , wherein the first and second near field communication circuits comprise respective chipsets comprising at least one of a personal seat communications system detector, an inductive communications data demodulator, and a security and processing protocol stack in communication with respective computerized memory and a respective processor.

8. A system according to claim 1 , wherein the inductive coupling between the first and second near field communication circuits is established across an electric field comprising a carrier signal encoded with the control data, wherein an encoded signal is transmitted via the inductive coupling at a transmission frequency less than or equal to 21 MHz.

9. A system according to claim 8 , wherein the encoded signal is transmitted via the inductive coupling at a transmission frequency less than or equal to about 1.5 times the frequency of the carrier signal.

10. A system according to claim 8 , wherein the carrier frequency is 13.6 MHz.

11. A system for controlling a personal communication device in a vehicle, the system comprising:
a first near field communication circuit positioned within a vehicle seat, the first near field communication circuit comprising a sensing electrode in data communication with a first inductive coil and a first transceiver circuit;
a second near field communication circuit positioned within a personal communications device, the second near field communication circuit comprising an inductive transceiver establishing a second data communication with a second inductive coil;
a human body medium inductively coupling respective electric fields from the first near field communication circuit and the second near field communication circuit;
wherein the first near field communication circuit and the second near field communication circuit are configured for communicating via the inductive coupling; and
wherein the first near field communication circuit transmits control data from the vehicle seat to the second near field communication circuit in the personal communications device.

12. A system according to claim 11 , further comprising a vehicle transceiver within a vehicle instrument panel transmitting vehicle operating data to the first transceiver circuit in the vehicle seat and/or to the second transceiver circuit in the personal communications device.

13. A system according to claim 12 , further comprising:
a seat control unit comprising computerized memory and a computer processor running a communications software stack;
a personal device control unit comprising additional computerized memory and a second computer processor running a corresponding communications software stack;
wherein the sensing electrode is an occupant classification sensor transmitting seat occupant data to the seat control unit;
wherein the vehicle transceiver transmits vehicle operating data to the seat control unit; and
wherein the computer processor in the seat control unit modulates an inductive signal from the first inductive coil with control data derived from the seat occupant data and the vehicle operating data and transmits an encoded inductive signal to the personal device control unit via the inductive coupling.

14. A system according to claim 13 , wherein the personal device control unit demodulates the encoded inductive signal and initiates a function from the corresponding communications software stack.

15. A system according to claim 14 , wherein the function initiates a personal communications device operating protocol via the inductive coupling when the seat occupant data indicates that the vehicle seat is occupied.

16. A system according to claim 15 , wherein the vehicle seat is occupied by a human body establishing a body area network comprising the human body, the first near field communications circuit and the second near field communications circuit, and wherein the inductive coupling between the first and second near field communications circuits is established across the body area network.

17. A system according to claim 15 , wherein the vehicle seat is the driver's seat in the vehicle.

18. A method of controlling a personal communications device positioned inside of a vehicle, the method comprising:
utilizing a computerized seat control unit to encode an inductive communication with control data;
utilizing a computerized personal device control unit to initiate at least one computerized function according to the control data;
communicating the control data in an encoded inductive communication transmitted via inductive coupling between a first near field communication circuit in the vehicle seat and a second near field communication circuit in the personal communications device;
initiating a power charging protocol via the inductive coupling when the control data indicates that the vehicle seat is empty.

19. A method according to claim 18 , further comprising:
deriving vehicle

Assignees

• Joyson Safety Systems Acquisition Llc

Inventors

• Chandra Prathap
• Cech Leonard

Classifications

• B60N2230/20

  Wireless data transmission · CPC title

• B60N2210/12

  Capacitive; Electric field · CPC title

• B60N2230/30

  Signal processing of sensor data · CPC title

• B60N2/0021

  characterised by the type of sensor or measurement · CPC title

• B60N2/0024

  for identifying, categorising or investigation of the occupant or object on the seat · CPC title