Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for opening opening panel of motor vehicle by motion detection, using doppler radar, and associated detection device

A technology of Doppler radar and motor vehicles, which is applied in the field of hands-free entry, and can solve the problem that the user's predetermined movement cannot be detected in time

Active Publication Date: 2022-02-25
VTESCO TECH GMBH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In case of reduced scanning frequency during detection mode, the main risk is not detecting the user's intended movement in time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for opening opening panel of motor vehicle by motion detection, using doppler radar, and associated detection device
  • Method for opening opening panel of motor vehicle by motion detection, using doppler radar, and associated detection device
  • Method for opening opening panel of motor vehicle by motion detection, using doppler radar, and associated detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] figure 1 A motor vehicle V is shown equipped with a detection device D for detecting a predetermined movement of a user's body part, intended to trigger the opening of an opening member, in particular the trunk of the vehicle V in this example. Said device is preferably, but by no means limiting, comprised in the rear bumper of the vehicle V. More specifically, the apparatus includes a Doppler radar (ie, antenna A), means for transceiving radar waves via antenna A, and means for processing reflected radar waves to detect predetermined movements.

[0039] The predetermined motion may include a "kick" or back-and-forth motion of the user's lower leg.

[0040] Processing of the radar waves reflected by the presence of the user's body makes it possible to determine whether said user has made a predetermined movement and thus whether they wish to open the trunk of their vehicle. If a predetermined movement is detected, the opening of the trunk is triggered, which is known ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for opening an opening panel of a motor vehicle (V), the vehicle (V) being provided with a device (D) for detecting a predetermined movement of a user's body part, comprising at least one Doppler radar, comprising an antenna (A), means for transmitting and receiving radar waves (10) and means (20) for processing reflected radar waves, suitable for detecting the predetermined movement, the method comprising detection modes (P1) having a transmission frequency and standby modes (P2) during which the transmission frequency of the waves is reduced, the method being characterised in that it comprises, during the standby modes (step E0), the following steps: Phase demodulation (step E2) of the reflected radar waves (step E1) and determination of a first signal (I) representing a phase variation of the reflected waves as a function of time (t), Phase-shift demodulation (step E3) of the reflected radar waves (step E1), and determination of at least one second signal (Q) representing a phase variation of the reflected waves shifted as a function of time (t), Comparison (step E4) between a predetermined threshold (S) and a maximum value of the absolute values of the first signal (Gamma) and of the second signal (Q'), Exiting the standby mode and triggering the detection mode (step E5) if the maximum is greater than the predetermined threshold (step E6), Opening the opening panel (step E7) if the predetermined movement is detected during the detection mode.

Description

technical field [0001] The invention relates to a method of opening / closing an opening member (ouvrant) and enabling safe hands-free access (accès main libre) by detecting movements of the user's lower limbs using Doppler radar. Background technique [0002] The main but not exclusive application of the invention relates to the opening of the trunk of a vehicle, so that an authorized user can open the trunk by foot movement only, wherein, by means of a BCM (an acronym for the English term "body control module") located in the vehicle , body control module) the control module identifies the user by a badge or key carried by the user. [0003] So far, hands-free entry requests mainly consist of requests that require positioning of hands to confirm opening / closing of vehicle opening parts, and the process consists of two main steps: identification of keys or badges that are authorized to open or close the vehicle through the BCM of the entry system In the vicinity of the openi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E05F15/73G01S13/56G01S13/931
CPCE05F15/73G01S13/56G01S13/931E05F2015/763E05Y2400/858E05Y2900/531E05Y2900/546E05Y2900/548E05Y2400/44B60R21/0134G01S2013/93272B60R25/01B60R25/2054B60R25/30E05Y2400/45
Inventor W·瓦萨克F·达劳霍E·塞瓦尔
Owner VTESCO TECH GMBH