Method for detecting the opening of the openable sections of a motor vehicle and associated detection device

Patent metadata

Field	Value
Publication number	US-2024142595-A1
Application number	US-202218569064-A
Country	US
Kind code	A1
Filing date	Jun 24, 2022
Priority date	Jun 25, 2021
Publication date	May 2, 2024
Grant date	—

Abstract

A method for detecting the opening of the openable sections of a motor vehicle by a detection device. The device includes at least two ultra-high-frequency communication modules, each located on a different openable section and connected to an electronic computer. An opening angle of a first openable section is determined based on: a first distance between a rotation point of the first openable section on which a first communication module is located and a position of a second module when the two openable sections associated with the two modules are closed; a second distance between a rotation point of the first openable section and a position of the first module on the openable section; a distance between the two modules when the two openable sections associated with the two modules are closed; a distance between the modules, determined by a time of flight of ultra-high-frequency radiation exchanged between the modules.

First claim

1 . A method for detecting the opening of the openable sections of a motor vehicle by a detection device, the detection device comprising at least two ultra high frequency communication modules, each located on a different openable section and connected to an electronic computer, the detection device allowing “hands-free” access to the vehicle, the method being characterized in that, said modules being capable of identifying one another, an opening angle of a first openable section is determined on the basis of:
a) a first distance between a point of rotation of the first openable section on which a first communication module is located and a position of a second module when the two openable sections associated with said two modules are closed,
b) a second distance between a point of rotation of the first openable section and a position of the first module on said openable section,
c) a distance between said modules when the two openable sections associated with the two modules are closed, and
d) a distance between said modules, said distance being determined by a time of flight of the ultra-high-frequency radiation exchanged between the two modules.

2 . The detection method as claimed in claim 1 , wherein the distance between the two modules when the two openable sections are closed, as well as the first and second distance, are determined in advance in a calibration phase.

3 . A device for detecting the opening of the openable sections of a motor vehicle, comprising at least two ultra-high-frequency communication modules, each located on a different openable section of the vehicle and connected to an electronic computer, the detection device allowing “hands-free” access to the vehicle, the device further comprising:
a) means for identifying the modules among each other,
b) means for estimating a distance between a first module located on a first openable section and at least a second module located on a second openable section, on the basis of a time of flight of the ultra-wideband radiation exchanged between the two modules, and
c) means for determining the opening of the first openable section associated with the first module, on the basis of the distance thus estimated and the positions of the first module and the second module on the vehicle, when the first and second openable sections are closed.

4 . The detection device as claimed in claim 3 , wherein the positions of the first and second module on the vehicle consist of:
a) a first distance between a point of rotation of a first openable section on which a first communication module is located and a position of a second module when the first and second openable sections associated with said two modules are closed, b) a second distance between a point of rotation of the first openable section and a position of the first module on said openable section, c) a distance between the two modules when the two openable sections associated with the two modules are closed.

5 . A motor vehicle comprising a detection device as claimed in claim 3 .

Assignees

• Continental Automotive Tech Gmbh

Inventors

• Billy Stéphane
• Godet Sylvain
• Benbouhout Rachid

Classifications

• G01S13/08 Primary

  Systems for measuring distance only (indirect measurement G01S13/46) · CPC title

• G01S7/40

  Means for monitoring or calibrating · CPC title

• B60R25/24 Primary

  using electronic identifiers containing a code not memorised by the user · CPC title

• B60R25/01

  operating on vehicle systems or fittings, e.g. on doors, seats or windscreens · CPC title