Automobile vehicle equipped with a sophisticated "hands-off" access system to determine the localization of a portable badge

• US 20020027498A1
• Filed: 07/02/2001
• Published: 03/07/2002
• Est. Priority Date: 07/03/2000
• Status: Abandoned Application

• Current Assignee: Valeo Electronique
• Original Assignee: Valeo Electronique
• Inventors: Stephane, Etter
• Application Number:
  US09/895,179
• Publication Number:
  US 20020027498A1
• Time in Patent Office: Days
• US Class Current: 340/425.5
• CPC Class Codes: B60R 25/245 where the antenna reception area plays a role
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 2209/63 Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks

Abstract

The automobile vehicle (V) is equipped with a “hands-off” access system comprising a recognition device placed in the vehicle with several antennas and a portable identification device or badge for remote communication with the recognition device to automatically control locking or unlocking of the said vehicle doors and/or authorization to start the said vehicle. The said antennas have intersecting coverage areas (Z1, Z2, Z3), and the recognition device is designed to activate each antenna in turn in order to detect a response or lack of response of the identification device depending on which antenna is activated and to localize the presence of the identification device in a particular coverage area of the antennas based on detections of response or lack of response of the identification device.

Claims

1. An automobile vehicle (V) equipped with,a “

hands-off”

access system comprising a recognition device (DR) placed in the vehicle with several antennas (AE1, AE2), and a portable identification device (OI) for remote communication with the recognition device to automatically control locking or unlocking of the said vehicle doors and/or authorization to start the said vehicle, characterized in that the said antennas (AE1, AE2) have intersecting coverage areas (Z1, Z2, Z3), and in that the said recognition device is designed to activate each antenna in turn in order to detect a response or lack of response from the identification device depending on which antenna is activated and to localize the presence of the identification device in a particular coverage area of the said antennas based on detections of response or lack of response from the identification device as a function of which antennas are activated.