Adas calibration system for calibrating at least one headlamp of a vehicle

Patent metadata

Field	Value
Publication number	US-2023251162-A1
Application number	US-202118003112-A
Country	US
Kind code	A1
Filing date	Jul 21, 2021
Priority date	Jul 28, 2020
Publication date	Aug 10, 2023
Grant date	—

Abstract

An ADAS calibration system for calibrating at least one headlamp of a vehicle. The ADAS calibration system including a support; optical measurement device mounted on the support for detecting the distances of two front or rear wheels of the vehicle from the support; a projection surface mounted on the support; and at least one headlamp beam setter. The headlamp beam setter includes a screen configured to show a pattern created by the two-dimensional projection of the light beam emitted by the headlamp and a camera configured to acquire images of the pattern shown on the screen. The ADAS calibration system also includes a control unit configured to receive from the optical measurement device the distances detected and from the camera the images of the pattern and, in response to them, to compute an alignment angle for the headlamp.

First claim

1 . An ADAS calibration system for calibrating at least one headlamp of a vehicle, said ADAS calibration system comprising:
a support; an optical measurement device configured to detect distances of two wheels of the vehicle from the support, said optical measurement device being mounted on the support; a projection surface for projecting images or videos, said projection surface being mounted on the support; at least one headlamp beam setter comprising:
a screen configured to show a pattern created by a two-dimensional projection of a light beam emitted by the headlamp substantially arranged in front of the headlamp beam setter; and
a camera configured to acquire images of the pattern shown on said screen; and
a control unit configured:
to receive from said optical measurement device the distances detected for the two wheels and from said camera the images of the pattern and,
in response to the distances detected for the two wheels and the images of the pattern, to compute an alignment angle for said headlamp.

2 . The ADAS calibration system according to claim 1 , wherein said at least one headlamp beam setter is mounted on said support and horizontally slidable thereon.

3 . The ADAS calibration system according to claim 2 , wherein said support comprises a horizontal bar on which said headlamp beam setter is slidably mounted along a first predefined direction.

4 . The ADAS calibration system according to claim 3 , wherein said horizontal bar is slidable along a second predefined direction that is transverse to the first predefined direction.

5 . The ADAS calibration system according to claim 1 , further comprising a further support for said headlamp beam setter that is separated from said support such that the support and the further support are not integrally connected.

6 . The ADAS calibration system according to claim 1 , further comprising two headlamp beam setters mounted on said support.

7 . The ADAS calibration system according to claim 6 , in which said support comprises a horizontal bar on which the two headlamp beam setters are mounted.

8 . The ADAS calibration system according to claim 1 , wherein the camera is located in front of or behind said screen with respect to the light beam emitted by the headlamp.

9 . The ADAS calibration system according to claim 1 , wherein said at least one headlamp beam setter further comprises at least one lens for focusing the light beam coming from the headlamp before reaching said screen.

10 . The ADAS calibration system according to claim 9 , wherein said at least one headlamp beam setter comprises a box housing said screen, said camera and said at least one lens.

11 . The ADAS calibration system according to claim 9 , wherein the camera is located in a lower position or in a higher position with respect to an optical axis of said at least one lens.

12 . The ADAS calibration system according to claim 1 , wherein said optical measurement device comprise two laser meters slidably mounted on the support.

13 . The ADAS calibration system according to claim 1 , wherein said optical measurement device comprise two cameras mounted on the support.

14 . The ADAS calibration system according claim 1 , wherein the projection surface is a second screen or a panel.

15 . The ADAS calibration system according to claim 1 , wherein the control unit is also configured to command projection of images or videos for calibration of one or more optical sensors placed on board of the vehicle.

16 . The ADAS calibration system according to claim 1 , wherein said control unit is configured to communicate with an EOBD diagnostic socket of the vehicle either wireless or via cable connection.

Assignees

• Mahle Int Gmbh

Inventors

• Cantadori Andrea

Classifications

• G01M11/064 Primary

  by using camera or other imaging system for the light analysis · CPC title

• G01M11/067

  Details of the vehicle positioning system, e.g. by using a laser · CPC title

• G01M11/061

  Details of the mechanical construction of the light measuring system (G01M11/064 takes precedence) · CPC title