Patent application number | Description | Published |
20090309026 | Optical sensor device having a lens system at least partially integrated into the unit housing - An optical unit, having a sensor device in particular, including a housing enclosing same, a radiation-sensitive sensor surface, designed for detecting electromagnetic radiation from a frequency section, having a predefined width and position, of the spectral range including the near infrared range and/or the visible range, and a lens system. In order to reduce the cost and complexity for mounting a lens on the housing and to obtain a uniform housing surface on the object side, a part of the lens system acting as a lens on the object side or the entire lens system of the unit is designed as an integral component of the housing of the unit. | 12-17-2009 |
20090312966 | Method for testing a vibration damper of a motor vehicle in the installed state, and vibration damper-test system for a motor vehicle - A method for checking a vibration damper of a motor vehicle in the installed state includes setting start values of the damping constant kA, the spring rate cA, and the body mass mA for a wheel of a motor vehicle; inducing a vertical vibration of the motor vehicle with the aid of a defined excitation sR | 12-17-2009 |
20100060885 | Method and device for performing optical suspension measurement - The invention relates to a method for optically measuring an undercarriage and/or for dynamically testing undercarriage components of a motor vehicle ( | 03-11-2010 |
20100303336 | Method for ascertaining the axis of rotation of a vehicle wheel - A method for ascertaining the axis of rotation of a vehicle wheel in which a light pattern is projected at least onto the wheel during the rotation of the wheel and the light pattern reflected from the wheel is detected by a calibrated imaging sensor system and analyzed in an analyzer device. Accurate and robust measurement of the axis of rotation and, optionally, of the axis and wheel geometry, in particular when the vehicle is passing by, is achieved in that a 3D point cloud with respect to the wheel is determined in the analysis and a parametric surface model of the wheel is adapted thereto; normal vectors of the wheel are calculated for different rotational positions of the wheel for obtaining the axes of rotation; and the axis of rotation vector is calculated as the axis of rotation from the spatial movement of the normal vector of the wheel. | 12-02-2010 |
20110044557 | Method and control unit for rectifying a camera image - A method for rectifying a camera image includes: receiving a plurality of distorted pixels of a distorted camera image; receiving a compressed rectifying rule, via an interface; and performing a decompression of the compressed rectifying rule, in order to obtain a decompressed rectifying rule for rectifying the distorted camera image. A plurality of rectified pixels of a distorted camera image is determined from the plurality of distorted pixels, using the decompressed rectifying rule. | 02-24-2011 |
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 |
20110056281 | METHOD AND DEVICE FOR CHECKING THE REFERENCING OF MEASURING HEADS IN A CHASSIS MEASURING SYSTEM - A method for checking the referencing of at least two measuring heads of a contactless chassis measuring system includes: detecting at least one geometry detail of a vehicle using the measuring heads; determining an initial position of the geometry detail in the coordinate system associated with each measuring head; transforming the initial position into a shared coordinate system; executing a relative movement between the measuring heads and the vehicle; determining a final position of the at least one geometry detail in the coordinate system associated with each measuring head; transforming the final position of the geometry detail into the shared coordinate system; determining the movement vectors from the difference between the final position and the initial position of the at least one geometry detail; checking the movement vectors for coincidence. | 03-10-2011 |
20110058581 | Measuring station for measuring vehicles - A measuring station for measuring vehicles has at least one laser source, which emits laser radiation ( | 03-10-2011 |
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 |
20110193955 | CHASSIS TESTING UNIT AND METHOD FOR TESTING A CHASSIS - A chassis testing unit ( | 08-11-2011 |
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 |
20120007957 | Method for calibrating a measuring system and a measuring station forvehicle measurement - 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. | 01-12-2012 |
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 |
20120026293 | METHOD AND MEASURING ASSEMBLY FOR DETERMINING THE WHEEL OR AXLE GEOMETRY OF A VEHICLE - In a method for determining a wheel or axle geometry of a vehicle, the following steps are provided: illuminating a wheel region with structured and with unstructured light during a motion of at least one wheel and/or of the vehicle; acquiring multiple images of the wheel region during the illumination, in order to create a three-dimensional surface model having surface parameters, a texture model having texture parameters, and a motion model having motion parameters of the sensed wheel region; calculating values for the surface parameters, the texture parameters, and the motion parameters using a variation computation as a function of the acquired images, in order to minimize a deviation of the three-dimensional surface model, texture model, and motion model from image data of the acquired images; and determining a rotation axis and/or a rotation center of the wheel as a function of the calculated values of the motion parameters. | 02-02-2012 |
20120218565 | LAZER PROJECTOR FOR CHASSIS ALIGNMENT - A laser projector for chassis alignment has a laser light source emitting a laser light beam, an optical element which generates a structured laser light pattern when it is irradiated by the laser light beam, a detector which is situated in such a way that it is irradiated by a sub-area of the structured laser light pattern and generates an output signal which is correlated with the radiation, and an evaluation unit which compares the output signal generated by the detector with at least one predefined setpoint value and turns off the laser light source if it detects a significant deviation of the output signal from the setpoint value. | 08-30-2012 |
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 |
20130116969 | Method and Device for Determining an Axle Geometry of a Vehicle - A method for determining characteristics of an axle geometry of a vehicle including the following: steering a wheel mounted on an axle of the vehicle to various steering positions having different steering angles; determining the spatial position of the wheel at the different steering positions; determining the particular axis of rotation of the wheel in the different steering positions from the results of the determination of the spatial position; modeling a parametric model of the steering axis; adapting the parametric model of the steering axis to the axes of rotation of the wheel determined from the measurement of the spatial position; and determining characteristics of the axle geometry from the adapted parametric model of the steering axis. | 05-09-2013 |
20130148098 | Manual Distance Measuring Apparatus - A manual distance measuring apparatus includes at least one computing unit, an image acquisition means and a laser measuring device, which determines a distance of a measurement point on a measurement object in a measurement direction during a measuring process. The computing unit is configured to control, at least by open-loop control, the measurement direction depending at least on an output characteristic variable of the image acquisition means. | 06-13-2013 |
20130188020 | METHOD AND DEVICE FOR DETERMINING DISTANCES ON A VEHICLE - A method for determining distances for chassis measurement of a vehicle having a body and at least one wheel includes determining a center of rotation of a wheel of the vehicle by projecting a structured light pattern at least onto the wheel, recording a light pattern reflected by the wheel using a calibrated imaging sensor system, determining a 3D point cloud from the reflected light pattern, and determining the center of rotation of the wheel from the 3D point cloud. The method also includes determining a point on the body by evaluating the previously determined 3D point cloud or by evaluating a plurality of grey-scale images recorded under unstructured illumination. A height level is determined as a vertical distance between the center of rotation of the wheel and the point on the body. | 07-25-2013 |
20130188839 | METHOD AND DEVICE FOR DETERMINING WHEEL AND BODY MOTIONS OF A VEHICLE - A method for determining wheel and body motions of a vehicle having a body and at least one wheel includes inducing a motion of the vehicle, recording an image sequence of the moving vehicle, determining the optical flow from the recorded image sequence, and determining the position of at least one wheel center, the motion of the body and/or a damping ratio of the vehicle from the optical flow. | 07-25-2013 |
20130321588 | method and device for processing image data of two sensors of a stereo sensor system suitable for capturing images - A method for processing image data of two sensors of a stereo sensor system that are suitable for recording images, each of the sensors being configured to record the image data section by section in sensor sections of the sensor that are situated at different positions. The method includes providing information on a geometrical offset between the positions of two sensor sections of the first sensor and the second sensor which have corresponding image data, and reading out image information of the first sensor and image information of the second sensor, the reading out taking place with reference to the positions of the sensor sections, from which the image data are read out, using the offset. | 12-05-2013 |
20140232852 | OPTICAL DEVICE AND METHOD FOR INSPECTING TIRES - A method for tire inspection which includes taking at least one image of at least one first area of a tread of a tire that is to be inspected; determining the profile depth of a second area of the tread of the tire, the second area being included in the first area; and displaying the profile depth of the at least one image of the at least one first area and the position of the second area in the first area. The method may additionally include automatically analyzing the images taken of the tread, so as to arrive at statements on the condition of the tread. | 08-21-2014 |