An apparatus for measuring the running gear of a motor vehicle includes: a left measuring unit for positioning on a left side of the motor vehicle, in such a way that a measurement target on a left front wheel and a measurement target on a left rear wheel of the motor vehicle can be sensed from the
An apparatus for measuring the running gear of a motor vehicle includes: a left measuring unit for positioning on a left side of the motor vehicle, in such a way that a measurement target on a left front wheel and a measurement target on a left rear wheel of the motor vehicle can be sensed from the left measuring unit; a right measuring unit for positioning on a right side of the vehicle, in such a way that a measurement target on a right front wheel and a measurement target on a right rear wheel of the motor vehicle can be sensed from the right measuring unit; and an evaluation device embodied to identify the vehicle geometry data from images of the measurement targets of the front wheels and of the measurement targets of the rear wheels by way of a comparison with reference images of the measurement targets.
대표청구항▼
1. An apparatus for measuring a running gear of a motor vehicle, comprising: a left measuring unit positioned on a left side of the motor vehicle, in such a way that a measurement target on a left front wheel and a measurement target on a left rear wheel of the motor vehicle are sensed from the left
1. An apparatus for measuring a running gear of a motor vehicle, comprising: a left measuring unit positioned on a left side of the motor vehicle, in such a way that a measurement target on a left front wheel and a measurement target on a left rear wheel of the motor vehicle are sensed from the left measuring unit;a right measuring unit positioned on a right side of the vehicle, in such a way that a measurement target on a right front wheel and a measurement target on a right rear wheel of the motor vehicle are sensed from the right measuring unit; andan evaluation device configured to identify vehicle geometry data by comparing images of the measurement targets on the front wheels and images of the measurement targets on the rear wheels with reference images of the measurement targets;wherein each of the left and right measuring units includes: a reference target visible from the respective other measuring unit; an image acquisition unit sensing (i) an image of the respective measurement target on the respective front wheel, (ii) an image of the respective measurement target on the respective rear wheel, and (iii) an image of the reference target; and an optical device disposed and configured to direct the image of the respective measurement target on the respective front wheel, the image of the respective measurement target on the respective rear wheel, and the image of the reference target to the image acquisition unit; andwherein the evaluation device is configured to identify relative positions of the reference targets,wherein: each of the image acquisition units includes a single image acquisition surface having three separate, non-overlapping image regions: a first image region, a second image region, and a third image region;each of the optical devices is disposed and configured to direct (i) the image of the respective measurement target of the respective front wheel onto the respective first image region, (ii) the image of the respective measurement target of the respective rear wheel onto the respective second image region, and (iii) the image of the respective reference target onto the respective third image region; andeach of the optical devices is disposed and configured to prevent the images of the measurement targets and the reference target from being directed onto adjacent image regions. 2. The apparatus as recited in claim 1, wherein the evaluation device is configured to identify the relative positions of the reference targets based on a comparison of the sensed images of the reference targets with reference images of the reference targets. 3. The apparatus as recited in claim 2, wherein: each of the reference targets is configured as an LED;each of the measuring units has an inclination sensor; andthe evaluation device identifies the vehicle geometry data based on inclinations of the measuring units and a known spacing of the measuring units in the transverse vehicle direction. 4. The apparatus as recited in claim 2, wherein: each of the reference targets is configured as at least two LEDs disposed on a line at a predetermined spacing;each of the measuring units has an inclination sensor; andthe evaluation device (i) determines a spacing and an angular displacement of the measuring units with respect to one another based on comparing the images of the references targets sensed by the image acquisition units with the reference images of the reference targets, and (ii) utilizes the spacing in the transverse vehicle direction and the angular displacement of the measuring units, as well as inclinations of the measuring units, to identify the vehicle geometry data. 5. The apparatus as recited in claim 2, wherein: each of the reference targets is configured as multiple LEDs disposed one of (i) on one surface at a predetermined spacing from one another, or (ii) on different surfaces and planes; andthe evaluation device (i) determines a spacing and an angular displacement of the measuring units with respect to one another, as well as inclinations of the measuring units, based on comparing the images of the references targets sensed by the image acquisition units with the reference images of the reference targets, and (ii) utilizes the spacing and the angular displacement of the measuring units, as well as inclinations of the measuring units, to identify the vehicle geometry data. 6. The apparatus as recited in claim 2, wherein at least one motion sensor is provided on at least one of the measuring units, and wherein the at least one motion sensor triggers imaging of the measurement targets and the reference targets by the image acquisition units when the at least one motion sensor detects one of a motion of at least one of the measuring units or a motion of the motor vehicle. 7. The apparatus as recited in claim 6, wherein the at least one motion sensor triggers imaging of the measurement targets and the reference targets by the image acquisition units when the at least one motion sensor detects a motion of at least one of the measuring units. 8. The apparatus as recited in claim 2, wherein the image acquisition units and the evaluation unit are configured to provide at least periodic imaging of the measurement targets and the reference targets. 9. The apparatus as recited in claim 2, wherein the optical device includes at least one of a prism, a beam splitter, a mirror, and a lens. 10. The apparatus as recited in claim 2, wherein the apparatus is part of a measuring station accommodating the motor vehicle, and wherein the measurement targets are mounted on the respective wheels. 11. The apparatus as recited in claim 1, wherein each of the optical devices directs the images of the measurement targets and reference targets onto the single image acquisition surface simultaneously. 12. A method for measuring a running gear of a motor vehicle, comprising: mounting on each wheel of the motor vehicle a respective measurement target;positioning a left measuring unit on a left side of the motor vehicle in such a way that the measurement target on a left front wheel and a measurement target on a left rear wheel of the motor vehicle are sensed from the left measuring unit, wherein the left measuring unit has a first optical device, a first image acquisition unit, and a first reference target, wherein the first reference target is visible from a right measuring unit;positioning a right measuring unit on a right side of the motor vehicle in such a way that the measurement target on a right front wheel and a measurement target on a right rear wheel of the motor vehicle are sensed from the right measuring unit, wherein the right measuring unit has a second optical device, a second image acquisition unit, and a second reference target, wherein the second reference target is visible from the left measuring unit;directing an image of the measurement target on the left front wheel, an image of the measurement target on the left rear wheel, and an image of the second reference target, by way of the first optical device of the left measuring unit, onto the image acquisition unit of the left measuring unit;directing an image of the measurement target on the right front wheel, an image of the measurement target on the right rear wheel, and an image of the first reference target, by way of the second optical device of the right measuring unit, onto the image acquisition unit of the right measuring unit;identifying the vehicle geometry data by comparing the images of the measurement targets on the front and rear wheels with reference images of the measurement targets; andidentifying the relative positions of the reference targets;wherein: the first image acquisition unit includes a single image acquisition surface having three separate, non-overlapping image regions: a first image region, a second image region, and a third image region;the first optical device is disposed and configured to direct (i) the image of the measurement target of the left front wheel onto the first image region, (ii) the image of the measurement target of the left rear wheel onto the second image region, and (iii) the image of the first reference target onto the third image region; andthe first optical device is disposed and configured to prevent the images of the measurement targets and the image of the first reference target from being directed onto adjacent image regions. 13. The method as recited in claim 12, wherein the sensed images of the first and second reference targets are compared with reference images of the first and second reference targets to identify the relative positions of the first and second reference targets. 14. The method as recited in claim 12, wherein: the second image acquisition unit includes a single image acquisition surface having three separate, non-overlapping image regions: a first image region, a second image region, and a third image region;the second optical device is disposed and configured to direct (i) the image of the measurement target of the right front wheel onto the first image region, (ii) the image of the measurement target of the right rear wheel onto the second image region, and (iii) the image of the second reference target onto the third image region; andthe second optical device is configured to prevent the images of the measurement targets and the image of the second reference target from being directed onto adjacent image regions. 15. The method as recited in claim 14, wherein each of the optical devices directs the images of the measurement targets and the reference target onto the single image acquisition surface simultaneously.
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이 특허에 인용된 특허 (3)
Bartko Robert J. ; Rosen Jack H., Intelligent sensor method and apparatus for an optical wheel alignment machine.
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