SMART KEY LOCATOR

• US 20160110988A1
• Filed: 10/21/2014
• Published: 04/21/2016
• Est. Priority Date: 10/21/2014
• Status: Active Grant

• Current Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Original Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Inventors: Nixon, Bradley B.
• Granted Patent: US 9,355,551 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60R 2325/205 Mobile phones
• CPC Class Codes: B60R 25/24 using electronic identifiers containing a code not memorised by the user

Abstract

The present disclosure is directed to a vehicle smart key adapted to pair with a vehicle, a system for locating a lost vehicle key, and a method of locating a lost key. The smart key, system, and method of the present disclosure enable a user of a vehicle to locate a missing or lost key for the vehicle. The smart key adapted to pair with a vehicle includes a transmitter, a receiver and an electronic control unit. The transmitter is adapted to send a locating beacon signal. The electronic control unit is programmed to execute transmission of the locating beacon signal by the transmitter when the smart key is not paired to the vehicle.

Claims

1. A smart key adapted to pair with a vehicle, the smart key comprising:

a transmitter adapted to send a locating beacon signal;

a receiver adapted to receive pairing information from the vehicle; and

an electronic control unit in communication with the transmitter and the receiver, the electronic control unit programmed to determine when the smart key is paired to the vehicle with the pairing information received by the receiver, the electronic control unit further programmed to execute transmission of the locating beacon signal by the transmitter when the smart key is not paired to the vehicle.

2. The smart key of claim 1 further comprising:

a GPS unit adapted to generate location information, the GPS unit in communication with the electronic control unit;

a cellular transmitter adapted to send the location information to a cellular network, the cellular transmitter in communication with the electronic control unit;

the electronic control unit programmed to execute the generation of location information by the GPS unit and send the location information to the cellular network by the cellular transmitter when the smart key is not paired to the vehicle.

3. The smart key of claim 2 further comprising:

a cellular receiver adapted to receive information, including instruction information, from the cellular network, the cellular receiver in communication with the electronic control unit;

the electronic control unit programmed to execute the generation of location information by the GPS unit and send the location information to the cellular network by the cellular transmitter when instruction information is received by the cellular receiver.

4. The smart key of claim 3 wherein the information received by the cellular receiver includes a location disable command, and the electronic control unit is programmed to refrain from sending location information to the cellular network when the location disable command is received by the cellular receiver.

5. The smart key of claim 3 wherein the information received by the cellular receiver includes a range disable command, and the electronic control unit is programmed to refrain from sending the location beacon signal when the range disable command is received by the cellular receiver.

6. A system for locating a lost vehicle key, the system comprising:

a vehicle having a vehicle transmitter, a vehicle receiver, and a vehicle electronic control unit, the vehicle electronic control unit in communication with the vehicle transmitter and the vehicle receiver, the vehicle electronic control unit programmed to generate pairing information and to transmit the pairing information with the vehicle transmitter;

a vehicle key having a key transmitter, a key receiver, and a key electronic control unit, the key transmitter adapted to send a locating beacon signal, the key receiver adapted to receive information, including pairing information, from the vehicle, and the key electronic control unit in communication with the key transmitter and the key receiver, the key electronic control unit programmed to determine when the smart key is paired to the vehicle with the pairing information received by the key receiver, the key electronic control unit further programmed to execute transmission of the locating beacon signal by the key transmitter when the smart key is not paired to the vehicle; and

a portable computing device having a device receiver adapted to receive the locating beacon signal, and a device electronic control unit in communication with the device receiver, the device electronic control unit programmed to determine the proximity of the portable computing device to the vehicle key based on the locating beacon signal.

7. The system of claim 6 further comprising:

the vehicle key including a GPS unit adapted to generate location information, the GPS unit in communication with the key electronic control unit, and a key cellular transmitter adapted to send the location information to a cellular network, the key cellular transmitter in communication with the key electronic control unit, the key electronic control unit programmed to execute the generation of location information by the GPS unit and send the location information to the cellular network by the key cellular transmitter when the smart key is not paired to the vehicle; and

the portable computing device including a device cellular receiver in communication with the device electronic control unit, the device cellular receiver adapted to receive location information from the cellular network.

8. The system of claim 7 further comprising:

the portable computing device including a device cellular transmitter adapted to send information, including a location command;

the vehicle key including a key cellular receiver adapted to receive information, the key electronic control unit programmed to execute the generation of location information by the GPS unit and send the location information to the cellular network by the key cellular transmitter when instruction information is received by the key cellular receiver.

9. The system of claim 8 further comprising:

the instruction information including a disable command;

the key electronic control unit programmed to disable the generation of location information and the transmission of the locating beacon signal when instruction information including the disable command is received by the key cellular receiver.

10. The system of claim 6 further comprising:

the vehicle electronic control unit programmed to generate instruction information including a disable command, and send out the information including the disable command with the vehicle transmitter;

the key electronic control unit programmed to disable the transmission of the locating beacon signal when instruction information including the disable command is received by the key receiver.

11. The system of claim 7 further comprising:

the vehicle including a cellular transmitter in communication with the vehicle electronic control unit, the vehicle electronic control unit programmed to generate instruction information including a disable command, and send out the information including the disable command with the vehicle cellular transmitter;

the vehicle key including a key cellular receiver in communication with the key electronic control unit, the key electronic control unit programmed to disable the transmission of the locating beacon signal and the generation of location information by the GPS unit when instruction information including the disable command is received by the key cellular receiver.

12. A method of locating a lost key for a vehicle utilizing a portable computing device comprising:

determining if the key is paired with the vehicle; and

transmitting a beacon locating signal from the key when the key is not paired with the vehicle.

13. The method of claim 12 further comprising:

disabling the transmission of the beacon location signal and location information when the key is paired with the vehicle.

14. The method of claim 12 further comprising:

generating and transmitting location information with the key when the key is not paired with the vehicle.

15. The method of claim 14 further comprising:

disabling the generation and transmission of location information by the key when the key is paired with the vehicle.

16. The method of claim 12 further comprising:

determining if a location disable command has been received by the key; and

generating and transmitting location information with the key when the key is not paired with the vehicle and the location disable command has not been received by the key.

17. The method of claim 12 further comprising:

determining if a location disable command has been received by the key; and

disabling the generation and transmission of location information by the key when the key is paired with the vehicle.