Method for calibrating a measuring system and a measuring station forvehicle measurement

• US 20120007957A1
• Filed: 06/28/2011
• Published: 01/12/2012
• Est. Priority Date: 07/07/2010
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: ABRAHAM, Steffen, BOSTELMANN, Jonas
• Application Number:
  US13/170,853
• Publication Number:
  US 20120007957A1
• Time in Patent Office: Days
• US Class Current: 348/47
• CPC Class Codes: G01B 11/275 for testing wheel alignment
• CPC Class Codes: G01B 2210/143 One or more cameras on each side of a vehicle in the main embodiment
• CPC Class Codes: G01B 2210/146 Two or more cameras imaging the same area

Abstract

A method for calibrating a measuring system and a measuring station for a vehicle measurement, having a road surface and at least two measuring heads, each measuring head having at least one lighting device and at least one image recording device, including applying a number of measuring points to the road surface; recording images of the measuring points and the lighting devices of at least one additional measuring head using the image recording device of at least one measuring head and moving at least one measuring head to another position and/or in another spatial alignment. The steps of recording and moving are repeated several times. The spatial position of the road surface and the position of the lighting devices of the measuring heads are determined from the images recorded.

Claims

1. A method for calibrating a measuring station for a vehicle measurement, the measuring station having a road surface and at least two measuring heads, each measuring head having at least one lighting device and at least one image recording device, the method comprising:

a) applying a number of measuring points to the road surface;

b) recording images of the measuring points and of at least one lighting device of at least one additional measuring head with the aid of the image recording device of at least one measuring head;

c) moving at least one measuring head to at least one of another position and to an altered spatial alignment within the measuring station;

d) repeating steps b) and c); and

e) determining a spatial position of the road surface and the lighting devices of the measuring heads from the images recorded in step b).

2. The method as recited in claim 1, wherein the determination of the spatial position of the road surface and of the lighting devices of the measuring heads includes performing a photogrammetric method.

3. The method as recited in claim 1, wherein steps b) through d) are additionally performed using at least one additional measuring head.

4. The method as recited in claim 1, wherein the measuring head is moved manually in step c).

5. The method as recited in claim 1, wherein the measuring head is moved by motor in step c).

6. The method as recited in claim 1, further comprising:

determining at least one of an optical focal distance and an optical distortion of at least one of the image recording devices.

7. The method as recited in claim 1, wherein the image recording devices are one of monocameras, stereo cameras, or multicamera systems.

8. The method as recited in claim 1, wherein the measuring points are one of spherical objects or as linear objects.

9. The method as recited in claim 1, wherein the measuring points are one of light-reflecting objects or self-illuminating objects.

10. A measuring station for a chassis measurement, comprising:

a road surface;

at least two measuring heads, each measuring head having at least one lighting device and at least one image recording device and being movable on the measuring station; and

an evaluation device for data transmission via the measuring heads and configured to performing a method for calibrating the measuring station, the method including;

a) applying a number of measuring points to the road surface,

b) recording images of the measuring points and of at least one lighting device of at least one additional measuring head with the aid of the image recording device of at least one measuring head,

c) moving at least one measuring head to at least one of another position and to an altered spatial alignment within the measuring station,

d) repeating steps b) and c), and

e) determining a spatial position of the road surface and the lighting devices of the measuring heads from the images recorded in step b).