Vehicle passive entry/passive start system

Patent metadata

Field	Value
Publication number	US-10035494-B2
Application number	US-201715437236-A
Country	US
Kind code	B2
Filing date	Feb 20, 2017
Priority date	Dec 6, 2016
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

A combined vehicle passive entry/passive start (PEPS) and mobile electronic device wireless charging system. The system includes a vehicle transmitter configured to transmit a signal in accordance with a wireless charging protocol. The signal is transmitted through a first wireless communications channel for receipt by a mobile electronic device. A vehicle receiver is configured to receive response data from the mobile electronic device through a second wireless communications channel. The response data is generated by the mobile electronic device in response to receipt of the signal transmitted by the vehicle transmitter. A vehicle processor module is configured to at least one of unlock doors of the vehicle and start the vehicle in response to receipt of the response data by the vehicle receiver.

First claim

What is claimed is:

1. A combined vehicle passive entry/passive start (PEPS) and mobile electronic device wireless charging system, the system comprising:
a vehicle transmitter configured to transmit a signal in accordance with a wireless charging protocol, the signal transmitted through a first wireless communications channel for receipt by a mobile electronic device; wherein the first wireless communication channel is a first frequency channel, and the second wireless communications channel is a second frequency channel at a higher frequency than the first frequency channel;
a vehicle receiver configured to receive response data from the mobile electronic device through a second wireless communications channel, the response data generated by the mobile electronic device in response to receipt of the signal transmitted by the vehicle transmitter; and
a vehicle processor module configured to at least one of unlock doors of the vehicle and start the vehicle in response to receipt of the response data by the vehicle receiver.

2. The system of claim 1 , wherein the vehicle transmitter is configured to transmit the signal at 80-200 kilohertz.

3. The system of claim 1 , wherein the vehicle transmitter is a first vehicle transmitter at an exterior of the vehicle for passive entry; and
wherein a second vehicle transmitter is at an interior of the vehicle for passive change of a power mode of the vehicle.

4. The system of claim 1 , wherein the vehicle transmitter is connected to multiple antennas and/or coils outside of the vehicle for passive entry and/or passive start.

5. The system of claim 1 , wherein the vehicle transmitter is configured to generate an electromagnetic field to transfer energy to the mobile electronic device through electromagnetic induction to charge a battery of the mobile electronic device, and the transfer of energy is initiated through the wireless charging protocol.

6. A combined passive entry/passive start (PEPS) and wireless charging system for a mobile electronic device, the system comprising:
a vehicle transmitter configured to transmit a digital ping in accordance with a wireless charging protocol, the digital ping transmitted at a first frequency and through a first wireless communications channel;
a mobile electronic device receiver of the mobile electronic device configured to receive the digital ping;
a mobile electronic device processor module of the mobile electronic device configured to generate response data in response to the digital ping;
a mobile electronic device transmitter of the mobile electronic device configured to transmit the response data to a vehicle having the vehicle transmitter by way of a second wireless communications channel at a second frequency that is higher than the first frequency;
a vehicle receiver configured to receive the response data; and
a vehicle processor module configured to at least one of unlock doors of the vehicle and start the vehicle in response to receipt of the response data by the vehicle receiver.

7. The combined PEPS and wireless charging system of claim 6 , wherein the digital ping is transmitted at a power level of at least 10 watts.

8. The combined PEPS and wireless charging system of claim 6 , wherein the vehicle transmitter is configured to transmit the digital ping at a distance of 2 m-3 m.

9. The combined PEPS and wireless charging system of claim 6 , wherein the second wireless communications channel is Ultra-Wideband Impulse Radio (UWB-IR).

10. The combined PEPS and wireless charging system of claim 6 , wherein the vehicle transmitter is configured to generate an electromagnetic field to transfer energy to the mobile electronic device through electromagnetic induction to charge a battery of the mobile electronic device.

11. The combined PEPS and wireless charging system of claim 10 , wherein the transfer of energy is initiated through the wireless charging protocol.

12. The combined PEPS and wireless charging system of claim 10 , wherein the electromagnetic field is generated at an exterior of the vehicle to permit wireless charging of the mobile electronic device at an exterior of the vehicle.

13. The combined PEPS and wireless charging system of claim 6 , wherein the mobile electronic device is at least one of a smartphone, wearable electronic device, a tablet computer, vehicle key fob, and a notebook computer.

14. A method for passive entry and passive start of a vehicle comprising:
transmitting a first signal from a vehicle transmitter of the vehicle to a mobile electronic device through a first wireless communications channel using a wireless charging standard; wherein the first wireless communication channel is a first frequency channel, and the second wireless communications channel is a second frequency channel at a higher frequency than the first frequency channel;
receiving the first signal at a receiver of the mobile electronic device;
processing the first signal and formulating a second signal with a processor module of the mobile electronic device;
transmitting the second signal from a transmitter of the mobile electronic device to a receiver of the vehicle through a second wireless communications channel; and
unlocking doors of the vehicle or changing a power mode of the vehicle in response to receipt of the second signal at the vehicle.

Assignees

• Denso Int America Inc
• Denso Corp

Inventors

• Sute Steven

Classifications

• H02J2105/33

  exchanging power with road vehicles · CPC title

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• G07C9/00309

  operated with bidirectional data transmission between data carrier and locks · CPC title

• G07C2209/61

  Signal comprising different frequencies, e.g. frequency hopping · CPC title

• F02N2300/306

  with external senders or receivers, e.g. receiving signals from traffic lights, other vehicles or base stations · CPC title