METHOD FOR CALIBRATING A MEASURING STATION FOR MEASURING A VEHICLE

• US 20130342686A1
• Filed: 07/21/2011
• Published: 12/26/2013
• Est. Priority Date: 09/13/2010
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Uffenkamp, Volker, Wagmann, Christian
• Application Number:
  US13/821,046
• Publication Number:
  US 20130342686A1
• Time in Patent Office: Days
• US Class Current: 348/139
• CPC Class Codes: G01B 11/14 for measuring distance or clearance between spaced objects or spaced apertures G01B11/26 takes precedence; rangefinders G01C3/00
• CPC Class Codes: G01B 11/2755 using photoelectric detection means
• CPC Class Codes: G01B 21/042 Calibration or calibration artifacts G01B3/30, G01B9/02072 take precedence
• CPC Class Codes: G01B 2210/12 Method or fixture for calibrating the wheel aligner

Abstract

A method for calibrating a measuring system for measuring a vehicle, including a measuring plane for accommodating a vehicle to be measured and two measuring sensors, each of the measuring sensors having at least two camera systems, includes: positioning at least four measuring panels on the measuring plane; orienting the measuring sensors such that at least one measuring panel is in view of each camera system, and each measuring panel is in view of at least one camera system; carrying out a first measuring step of recording images of the measuring panels; interchanging the two measuring sensors; carrying out a second measuring step of recording images of the measuring panels; determining and comparing positions of the measuring panels recorded in the first and second measuring steps; and calculating at least one correction value from the difference between the positions recorded in the first and second measuring steps.

Claims

1-10. -10. (canceled)

11. A method for calibrating a measuring system for measuring a vehicle, including a measuring plane which is designed to accommodate the vehicle to be measured, and two measuring sensors, each of the measuring sensors having at least two camera systems and one reference system, the method comprising:

positioning at least four measuring panels on the measuring plane;

orienting the measuring sensors such that at least one of the measuring panels is in a field of vision of each camera system, and each of the measuring panels is in the field of vision of at least one of the camera systems;

carrying out a first measuring step, which includes recording images of the measuring panels with aid of the camera systems;

interchanging the two measuring sensors;

carrying out a second measuring step, which includes recording images of the measuring panels with aid of the camera systems;

determining spatial positions of the measuring panels from the images recorded in the first and second measuring steps; and

calculating at least one correction value from a difference between the spatial positions of the measuring panels which have been determined from the images recorded in the first and second measuring steps.

12. The method according to claim 11, wherein the determination of the correction value includes solving a linear system of equations.

13. The method according to claim 12, wherein the correction value for a first measuring sensor is set to a predefined value for calculating the correction value for a second measuring sensor.

14. The method according to claim 11, further comprising:

comparing normal vectors of at least two measuring panels with each other.

15. The method according to claim 14, wherein the correction values for two pairs of measuring panels are determined, and a final correction value is determined by averaging the two correction values.

16. The method according to claim 11, wherein the measurement is carried out on a leveled platform, the platform and the measuring panels being oriented in relation to earth'"'"'s gravitational field.

17. The method according to claim 11, wherein at least one of the measuring panels has at least two measuring points whose orientation in relation to a spatial orientation of at least one foot of the measuring panel is known.

18. The method according to claim 11, wherein at least one of the measuring panels is rotatably mounted.

19. The method according to claim 11, wherein at least one measuring panel has at least one level which is suitable for determining a spatial orientation of the measuring panel.

20. The method according to claim 11, wherein serial numbers of the measuring sensors are additionally ascertained and stored together with the correction values.