Method for activating a vehicle function and associated activation device

Abstract

The invention relates to a method for starting a motor vehicle (V) by means of an activation device (D), from a portable device (SD) worn by a user, the method comprising the following steps: a) Detection of the closure of the vehicle's doors and windows, b) Emission of ultra-wideband waves into the passenger compartment, c) Reception of the waves and, for each transmission module (EM1, EM2): i) Comparison between a time-of-flight (TOF) value and predetermined time-of-flight (TOFd) values, ii) Determination of the presence of the portable device in the passenger compartment based on the result of the comparison, iii) If the portable device is located in the passenger compartment, then iv) Activation of the vehicle function and, v) Comparison between a received power value (RSSI) with predetermined received power values ​​(RSSId).vi) Determining the presence of portable equipment in the passenger compartment based on the comparison result: 1) If the portable equipment is not detected in the passenger compartment, then a correction value (ΔRSSI) is calculated between the received power and the predetermined received power, 2) The activation device stores said correction value associated with an equipment identifier for subsequent detection of the equipment's presence in the passenger compartment. Figure for the abbreviation: Fig. 1,

Claims

any of claims 1 to 3 when said program is executed on a computer.

8. Motor vehicle (V) characterized in that it comprises an activation device (D) according to any one of claims 4 to 6. [Fig. 2] 100

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