Hands-free remote entry system

• US 5,973,611 A
• Filed: 03/27/1995
• Issued: 10/26/1999
• Est. Priority Date: 03/27/1995
• Status: Expired due to Term

• Current Assignee: Lear Corporation EEDS and Interiors Incorporated (Lear Corporation)
• Original Assignee: UT Automotive Dearborn, Inc.
• Inventors: Bolsenga, Joseph S., Kulha, Steven P.
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): Beaulieu, Yonel
• Application Number:
  US08/410,915
• Time in Patent Office: 1,674 Days
• Field of Search: 340/825.31, 340/825.69, 340/825.71, 340/825.72, 340/825.34, 307/10.1, 307/10.5, 307/10.2, 455/343
• US Class Current: 340/5.62
• CPC Class Codes: B60R 25/245 where the antenna reception area plays a role
• CPC Class Codes: G07C 2009/00198 the keyless data carrier having more than one limited data transmission ranges
• CPC Class Codes: G07C 2009/00293 anti-theft
• CPC Class Codes: G07C 2009/00349 and the lock having only one limited data transmission range
• CPC Class Codes: G07C 2009/00373 whereby the wake-up circuit is situated in the lock
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 2009/00984 fob
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks

Abstract

The present invention teaches a hands-free remote entry system primarily for vehicles. This system comprises a base transceiver having wake-up sensors for automatically detecting an object. Once an object is detected, a transmitter within the base transceiver transmits a wake-up/data signal to a fob transceiver. A wake-up receiver within the fob transceiver receives the wake-up/data signal. Upon receipt of the wake-up/data signal, the fob transceiver transmits an identification/data signal, via a transmitter, back to a receiver in the base transceiver. In response to receiving the identification signal, output drivers from the base transceiver actuate a door lock system and an auto theft system.

Claims

1. A hands-free remote entry system sensitive to the presence of an object and, said system comprising:

a base transceiver having a sleep mode and an active mode of operation, said base transceiver comprising;

a wake-up sensor for switching from said sleep mode to said active in response to detecting the object;

a base transmitter for transmitting a wake-up/data signal in response to detecting the presence of the object;

a base receiver for receiving an identification/data signal; and

an output actuator for actuating the system; and

a fob transceiver having a sleep mode and active mode of operation comprising;

a wake-up receiver for switching said fob transceiver from said sleep mode to said active mode in response to receiving said wake-up/data signal; and

an identification transmitter for transmitting said identification/data signal in response to said wake-up receiver receiving said wake-up/data signal, wherein said output actuator actuates the system upon receipt of said identification/data signal by said base receiver.

2. The hands-free remote entry system as defined in claim 1 wherein said wake-up sensor comprises a sensor selected from the group consisting of a doppler sensor, a volumetric sensor and an infrared sensor.

3. The hands-free remote entry system as defined in claim 1 wherein said wake-up sensor comprises a plurality of sensors.

4. The hands-free remote entry system as defined in claim 3 wherein one of said sensors is positioned in close proximity to a driver door, one of said sensors is positioned in close proximity to a passenger door, and one of said sensors is positioned in close proximity to a trunk lid.

5. The hands-free remote entry system as defined in claim 4 wherein each of said sensors has a sensing range in close proximity to where said sensor is positioned.

6. The hands-free remote entry system as defined in claim 1 wherein said base transmitter transmits a directional localized wake-up/data signal.

7. The hands-free remote entry system as defined in claim 6 wherein said base transmitter transmits said directional localized wake-up/data signal sequentially at multiple positions around a vehicle.

8. The hands-free remote entry system as defined in claim 7 wherein said base transmitter is a colpitts oscillator.

9. The hands-free remote entry system as defined in claim 1 wherein said base receiver is a super-regenerative receiver.

10. The hands-free remote entry system as defined in claim 1 wherein said system actuated by said output actuator comprises a vehicle lock.

11. The hands-free remote entry system as defined in claim 10 wherein said system actuated by said output actuator further comprises an anti-theft device.

12. The hands-free remote entry system as defined in claim 1 wherein said base transceiver further comprises an interior sensor for sensing an object within a vehicle.

13. The hands-free remote entry system as defined in claim 12 wherein said interior sensor comprises a sensor selected from the group consisting of a doppler sensor, a volumetric sensor, an infrared sensor and a seat switch sensor.

14. The hands-free remote entry system as defined in claim 1 wherein said base transceiver further comprises a microprocessor for receiving a plurality of vehicle input data.

15. The hands-free remote entry system as defined in claim 1 wherein said fob transceiver further comprises an output warning device for generating a warning when said system has been actuated, said output warning device providing at least one of an audible warning and visible warning.

16. The hands-free remote entry system as defined in claim 1 wherein said fob transceiver further comprises a switch for manually actuating the transmission of said identification/data signal.

17. A hands-free remote entry system for remotely actuating a plurality of vehicle locks, said system being sensitive to the presence of an object and comprising:

a base transceiver having a sleep mode and an active mode of operation, said base transceiver comprising;

a plurality of wakeup sensors for switching from said sleep mode to said active mode in response to detecting the object within one of a plurality of zones positioned about a vehicle to wake-up said base transceiver;

a base transmitter for transmitting a wake-up/data signal sequentially from each of said zones in response to detecting the object;

a base receiver for receiving an identification/data signal from one of said zones; and

an output actuator for actuating at least one of the plurality of vehicle locks, each of the plurality of the zones associated with at least one of said plurality of vehicle locks; and

a fob transceiver comprising;

a wake-up receiver for receiving said wake-up/data signal from one of said zones to wake-up said fob transceiver; and

an identification transmitter for transmitting said identification/data signal from one of said plurality of zones in response to said wake-up receiver receiving said wake-up/data signal, wherein said output actuator actuates the at least one of the vehicle locks associated with the zone from which said identification/data signal is transmitted by said fob transceiver.

18. The hands-free remote entry system as defined in claim 17 wherein said plurality of wake-up sensors comprises a plurality of sensors selected from the group consisting of a doppler sensor, a volumetric sensor and an infrared sensor.

19. The hands-free remote entry system as defined in claim 18 wherein said sensors are positioned within door handles of said vehicle.

20. The hands-free remote entry system as defined in claim 17 wherein said base transceiver further comprises an interior sensor for detecting an object within said vehicle, wherein said output actuator is inhibited from actuating one of said vehicle locks if an object is detected within said vehicle.

21. The hands-free remote entry system as defined in claim 20 wherein said interior sensor comprises a sensor selected from the group consisting of a doppler sensor, a volumetric sensor, an infrared sensor and a seat switch sensor.

22. A method for remotely locking and unlocking a vehicle lock in a hands-free manner sensitive to the presence of an object, said method comprising the steps of:

a) detecting the object in one of a plurality of zones about a vehicle;

b) switching between a sleep mode of operation and an active mode operation in response to said step of detecting the object;

c) transmitting a wake-up/data signal sequentially from each of said zones in response to said step of detecting the object;

d) receiving said wake-up/data signal transmitted from a first one of said zones with a fob transceiver;

e) transmitting an identification/data signal from said fob transceiver in response to said step d);

f) receiving said identification/data signal from said fob transceiver; and

g) actuating the vehicle lock at said first one of said zones in response to receiving said identification/data signal.

23. The method as defined in claim 22 further comprising the steps of:

h) detecting a vehicle door opening;

i) ensuring a vehicle ignition is off;

j) ensuring a vehicle driver door is closed;

k) ensuring an occupant has exited vehicle;

l) transmitting a door lock signal after said steps h)-k);

m) receiving said door lock signal with said fob transceiver;

n) transmitting an identification/data signal from said fob transceiver in response to said door lock signal;

o) receiving said identification/data signal after said step n); and

p) locking a vehicle door in response to said step o).

24. The method as defined in claim 23 further comprising the steps of:

q) transmitting a secure vehicle message to said fob transceiver after said step o); and

r) informing a user of a secured vehicle by said fob transceiver after said step q).

25. A method for remotely locking and unlocking a vehicle lock in a hands-free manner sensitive to the presence the presence of an object, said method comprising the steps of:

detecting the object in one of a plurality of zones about a vehicle;

switching between a sleep mode of operation and an active mode operation in response to said step of detecting the object;

transmitting a wake-up/data signal sequentially from each of said zones in response to said step of detecting the object;

receiving said wake-up/data signal transmitted from one said zones with a fob transceiver;

transmitting an identification/data signal from said fob transceiver;

receiving said identification/data signal from said fob transceiver;

actuating the vehicle lock at one of said zones in response to receiving said identification/data signal;

detecting a vehicle door opening;

ensuring a vehicle ignition is off;

ensuring a vehicle driver door is closed;

ensuring an occupant has exited vehicle;

transmitting a door lock signal;

receiving said door lock signal with said fob transceiver;

transmitting an identification/data signal from said fob transceiver;

receiving said identification/data signal;

locking a vehicle door;

transmitting a secure vehicle message to said fob transceiver; and

informing a user of a secured vehicle by said fob transceiver.