Motor vehicle equipped with a system for detecting the approach

Details Motor vehicle equipped with a system for detecting the approach Motor vehicle equipped with a system for detecting the approach

1998-11-12

2000-06-27

Hofsass, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

34082531, H03D 1300

Patent

active

060811854

ABSTRACT:
Motor vehicle equipped with a system for detecting the approach of a user, comprising a metallic surface (15) which is isolated from the chassis of the vehicle (V) and is connected to a high-frequency wave generator (16), so that the pair formed by the chassis of the vehicle and the said surface defines a radiating dipole, and a capacitance-variation detector (2) which is connected to the said surface and is intended to detect the variation in capacitance of a capacitor (C) formed by the (surface (15)/user's hand) pair.

REFERENCES:
patent: 2708746 (1955-05-01), Shaw
patent: 3276005 (1966-09-01), Quist et al.
patent: 4208695 (1980-06-01), Noda et al.
patent: 4796013 (1989-01-01), Yasuda et al.
patent: 5394292 (1995-02-01), Hayashida
patent: 5760688 (1998-06-01), Kasai
Search Report, EPO 98 40 2881 dated Feb. 19, 1999.

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