Patent application number | Description | Published |
20080250842 | Method for Optical Chassis Measurement - For optical chassis measurement of motor vehicles at a testing site that has at least one measuring unit having at least two imaging devices associated with one another in position and location, the measuring units are oriented with respect to the testing site with reference characteristics located fixedly at the testing site, evaluation in an evaluation device is effected on a basis orientation data and associated data obtained, for determining chassis data of a motor vehicle, in addition to the reference characteristics located fixedly at the testing site, at least one reference device is positioned which is usable in mobile fashion at the testing site with reference characteristics, and with a totality of reference characteristics in the evaluation device, the orientation data and the association data of the measuring units are obtained, and thus a common measuring station coordinate system is defined. | 10-16-2008 |
20080319706 | Method for the Determination of the Wheel Geometry and/or Axle Geometry of Motor Vehicles - The invention relates to a method for determining the wheel geometry and/or axle geometry of motor vehicles by means of an optical measuring apparatus. According to said method, at least two recording points are assigned to each other and are referenced in relation to the measuring space with the aid of an image recording system, optionally taking into account reference characteristics and vehicle body characteristics, an object segment ( | 12-25-2008 |
20110050855 | OPTICAL MEASURING DEVICE WITH TWO CAMERA UNITS - The invention relates to an optical measurement device with an image acquisition unit, which has at least two camera units ( | 03-03-2011 |
20110052041 | METHOD FOR DETERMINING THE ROTATIONAL AXIS AND THE CENTER OF ROTATION OF A VEHICLE WHEEL - The invention relates to a method for determining the rotational axis and the rotating center of a vehicle wheel by means of at least two image capture units assigned to each other in position and situation during the journey of the vehicle, and by means of an analysis unit arranged downstream of said units, processing the recorded image information, taking into account multiple wheel features ( | 03-03-2011 |
20110100107 | METHOD AND DEVICE FOR WHEEL SUSPENSION ALIGNMENT - A method according for wheel suspension alignment includes the following: providing a wheel suspension alignment system having four measuring heads situated in a known position with respect to one another, of which each has a monocular picture recording device; recording at least three geometrical details of one wheel, respectively, of a vehicle standing in an initial position, using each of the four measuring heads; carrying out a relative motion between the vehicle, on the one hand, and the measuring heads, on the other hand, from the initial position (A) into at least one further position (E), the relative position of the measuring heads with respect to one another being known; recording at least three geometrical details of one wheel, respectively, of the vehicle standing in the further position (E), using each of the four measuring heads; carrying out local 3D reconstructions for determining the translation vectors, the rotation vectors and the wheel rotational angles between the at least two positions, as well as of the wheel rotational centers and the wheel rotational axes of the wheels from the recorded geometrical details; determining a global scale for the measuring heads by scaling the translation vectors of the wheels, so that the translation vectors have the same length; and determining the camber, the single toe and/or the total toe of the vehicle. | 05-05-2011 |
20110187851 | CHASSIS-MEASURING SYSTEM AS WELL AS METHOD FOR DETERMINING THE POSITION PARAMETERS OF MEASURING HEADS OF A CHASSIS-MEASURING SYSTEM - A chassis measuring system according to the invention includes at least one pair of first and second measuring heads ( | 08-04-2011 |
20110221867 | method and device for optically aligning the axels of motor vehicles - A method and a device are provided for the optical axle alignment of wheels of a motor vehicle. At the wheels that are to be aligned, targets are mounted, having optically recordable marks, the targets being recordable by measuring units that have stereo camera devices. In a referencing process, using a referencing device that is integrated into the measuring units, a measuring position reference system is established for the measuring units. In a calibration process, in which a local 3D coordinate system is established using at least three marks of the target, the determination of a reference plane is carried out, using a significant mark of the target. Finally, using the reference plane, a vehicle longitudinal center plane is ascertained, while taking into account the measuring location reference system. In a subsequent measuring process, an image is recorded of at least three indeterminate marks taken during the calibration process, and their spatial position is ascertained in the local 3D coordinate system by the evaluation unit. | 09-15-2011 |
20110265337 | Unit of at least two target arrangements for optically measuring an axle and device for optically measuring an axle - A set according of target assemblages for optical chassis measurement encompasses at least two target assemblages that are each provided for mounting on a wheel of a motor vehicle, as well as a respective target and a target holder having a target receptacle on which the target is mounted. Each of the target holders is mountable on a wheel of a motor vehicle in such a way that the target is oriented at an angle to the wheel center plane. A significant mark and at least two further undetermined marks are disposed on the target, and the spacing of the significant mark from a reference plane of the respective target assemblage is unknown, but the same in each case for all target assemblages. | 11-03-2011 |
20110302795 | TARGET SYSTEM, SET OF TARGET SYSTEMS AND DEVICE FOR OPTICALLY ALIGNING AN AXLE - A target system for optical chassis alignment includes a target and a target mounting element having a target receiving element to which the target is attached. The target mounting element is attachable to a wheel of a motor vehicle so that the target is aligned at an angle to the wheel center plane. A significant mark at a known distance from a reference plane and at least two additional undetermined marks are situated on the target. | 12-15-2011 |
20110308309 | METHOD FOR WHEEL SUSPENSION MEASUREMENT AND A DEVICE FOR MEASURING THE WHEEL SUSPENSION GEOMETRY OF A VEHICLE - In a method for wheel suspension alignment, the following steps are carried out: providing a wheel suspension alignment system having four measuring heads situated in a known position with respect to one another, of which each has a monocular picture recording device, the relative position of the measuring heads with respect to one another being known; recording in each case one wheel or a measuring target mounted on it in an initial position of the vehicle, using each of the four measuring heads; shifting the vehicle from the initial position to at least one further position; recording in each case one wheel, or a measuring target mounted on it, of the vehicle standing in the further position, using each of the four measuring heads; recording a reference target having a known pattern mounted on the vehicle, using one of the four measuring heads in at least one of the initial position and the further position of the vehicle, and determining from this an absolute scale for the measuring heads; carrying out local 3D reconstructions for determining the translation vectors, the rotation vectors and the wheel rotational angles between the at least two positions, as well as the wheel rotational centers and the wheel rotational axes of the wheels; and determining the wheel suspension alignment parameters of the vehicle, especially the camber, the single toe and/or the total toe, the wheelbase and the tread width. | 12-22-2011 |
20120007958 | METHOD FOR MEASURING A CHASSIS AND DEVICE FOR MEASURING THE CHASSIS GEOMETRY OF A MOTOR VEHICLE - A method and device are described for measuring a chassis and for measuring the chassis geometry of a vehicle, which includes providing a chassis measurement system having four measurement heads situated in known positions relative to one another, of which each has a monocular image recording device, the position of the measurement heads relative to one another being known, and the distance of the front measurement heads from one another differing from the distance of the rear measurement heads from one another; recording a respective front wheel, or a measurement target attached thereto, in at least one first run-in position of the vehicle using the rear measurement heads; recording the four wheels, or the measurement targets attached thereto, using each of the four measurement heads, in a first main measurement position and in a second main measurement position of the vehicle; carrying out local 3D reconstructions in order to determine the translation vectors, the rotation vectors, and the wheel angles of rotation between these positions, and the centers of rotation and axes of rotation of the wheels, from the recorded images of the wheels or the measurement targets attached thereto; adapting the local scales to a common, global scale via the vehicle movement; transferring the global scale from the main measurement to the run-in measurement; determining an absolute scale for the measurement heads from the measurements of the front wheels, or the measurement targets attached thereto, in the run-in positions and in the main measurement positions; and determining the chassis measurement parameters of the vehicle, including camber, partial toe, and/or total toe. | 01-12-2012 |
20130089233 | METHOD FOR DETERMINING THE TUMBLING MOTION OF A VEHICLE WHEEL - A method for determining the tumbling motion of a vehicle wheel and/or a measurement object attached to the vehicle wheel in the context of an axle measurement. The tumbling motion is executed relative to the precise wheel axis of rotation of the vehicle wheel and at least one orientation value is determined between, the precise wheel axis of rotation and a reference axis. Using at least one image recording unit, at least two wheel features that are present on the vehicle wheel or are attached for the measurement are acquired as the vehicle travels past and are evaluated by an evaluation device situated downstream. Using the wheel features recorded as the vehicle travels past, a wheel coordinate system and a feature coordinate system are determined. The wheel coordinate system and the feature coordinate system are set into relation to one another in order to determine the orientation value. | 04-11-2013 |
20130141545 | METHOD FOR CALIBRATING A MEASUREMENT SYSTEM AND DEVICE FOR CARRYING OUT THE METHOD - The invention relates to a method for calibrating a measurement system having at least one image recording apparatus ( | 06-06-2013 |
20130239421 | METHOD AND DEVICE FOR CALIBRATING A REFERENCE SYSTEM FOR VEHICLE MEASUREMENT - A calibration frame for calibrating a reference system for vehicle measurement has setting elements, which enable a precise spatial orientation of the calibration frame, and multiple defined points of support, which are designed to accommodate a reference system carrier. In one specific embodiment, the points of support are designed in such a way that the reference system carrier is situatable on the points of support in at least two different orientations. In a second specific embodiment, a leveling element is provided which indicates the spatial orientation of the calibration frame in relation to the earth's gravitation field. | 09-19-2013 |
20130342686 | METHOD FOR CALIBRATING A MEASURING STATION FOR MEASURING A VEHICLE - 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. | 12-26-2013 |
20140083161 | SYSTEM AND METHOD FOR CALIBRATING REFERENCE SYSTEM FOR VEHICLE MEASUREMENT - A measuring station system for calibrating a reference system for vehicle measurement has at least one image recording device, a calibration device having multiple calibration device reference features, and a calibration frame having at least three support points which are designed for accommodating a reference system carrier for the reference system to be calibrated. The calibration frame has at least three calibration frame reference features. The positions of the support points and of the calibration frame reference features in a shared coordinate system are known. | 03-27-2014 |