Abstract: A method for monitoring the pressure in a tire of a rolling vehicle includes determining the length of the tire contact patch of the tire in the driving direction and inferring the pressure in the tire from the length of the tire contact patch.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A method for automatically establishing a communication connection to a vehicle at a repair shop work station, including the tasks of connecting a plurality of mobile communication interfaces to one of a plurality of vehicles, establishing biunique assignments of the vehicles to the particular mobile communication interfaces connected to the vehicles, one of the tasks of automatically detecting identification data of one of the plurality of mobile communication interfaces and/or of the particular assigned vehicle, which are located at the repair shop work station, or automatically detecting position coordinates of the plurality of mobile communication interfaces; transmitting the identification data or position coordinates to a vehicle testing device at the repair shop work station, and automatically establishing a communication connection between the vehicle testing device and the mobile communication interface located at the repair shop work station based on the detected identification data or the detected

Abstract: A method for identifying and diagnosing a vehicle includes: storing customer, vehicle, and repair shop order data of the vehicle in a work data memory device of a mobile communication interface; connecting the mobile communication interface to the vehicle and connecting a first vehicle inspection device at least to the mobile communication interface at a first work station; carrying out a first set of inspections on the vehicle using the first vehicle inspection device and/or the mobile communication interface; carrying out a second set of inspections on the vehicle using a second vehicle inspection device and/or the mobile communication interface on the basis of the first inspection results; and storing the customer, vehicle, and repair shop order data as well as the first and second inspection results of the vehicle into the central customer database.

Abstract: A method for identifying, diagnosing, maintaining, and repairing a vehicle in a repair shop, including the steps of connecting a mobile communication interface (VCI) to the vehicle and connecting a first vehicle inspection device at least to the VCI at a first work station; detecting identification data for the vehicle using the first vehicle inspection device and storing the identification data for the vehicle in the VCI; carrying out the first set of inspections of the vehicle using the first vehicle inspection device and/or the VCI; disconnecting the first vehicle inspection device from the vehicle; connecting a second vehicle inspection device to the vehicle, reading out the identification data from the VCI into the second vehicle inspection device at a second work station, and carrying out a second set of inspections of the vehicle using the second vehicle inspection device and/or the VCI connected to the vehicle.

Abstract: A method for diagnosing and maintaining a vehicle at a repair shop includes connecting a first vehicle inspection device to a first work station and selecting a mobile VCI which is provided a detection software component situated on a central repair shop server and a central diagnostic device; connecting the VCI to the vehicle; establishing a communication between the VCI and the diagnostic device; storing vehicle identification data in the VCI via the diagnostic device; performing a first set of vehicle inspections using the first vehicle inspection device and/or the VCI; disconnecting the first vehicle inspection device from the vehicle; connecting a second vehicle inspection device to the vehicle; reading out the identification data from the VCI into the second vehicle inspection device at a second work station via the diagnostic device; and performing a second set of vehicle inspections using the second vehicle inspection device and/or the VCI.

Abstract: 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.

Abstract: A measuring unit for measuring a particulate concentration in exhaust gases using scattered light includes a measuring chamber, at least one light source and at least one light sensor, the measuring chamber being situated in the optical path of the light source; and the light sensor records the light scattered by the particulates in the measuring chamber. To detect the intensity of light beam that is relevant for a precise particulate measurement, a monitoring device is provided to detect the intensity of the light beam with the aid of a scattered radiation. The intensity of the light beam is recorded using a monitoring measurement, by ascertaining a scattered radiation and comparing it to a specified reference value for the scattered radiation. With the aid of the comparison, the intensity of the light source is regulated correspondingly and/or the measuring result of the particulate measurement is correspondingly corrected.

Abstract: The following features may be carried out: providing a wheel suspension alignment system having four measuring heads situated in a known position with respect to one another; recording a wheel or a measuring target mounted on it in an initial position of the vehicle; shifting the vehicle from the initial position to at least one further position; recording a wheel, or a measuring target mounted on it, of the vehicle standing in the further position; recording a reference target in at least one of the initial position and the further position of the vehicle, and determining from this an absolute scale; carrying out local 3D reconstructions for determining the translation vectors, the rotation vectors and the wheel rotational angles 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.

Abstract: A method for identifying a motor vehicle for a plurality of motor vehicle inspection devices, including ascertaining a distinct characteristic of the motor vehicle; ascertaining basic identification data of the motor vehicle; storing the distinct characteristic and the basic identification data in an identification data set for this motor vehicle on a storage medium; identifying the identification data set associated with the motor vehicle on the storage medium based on the distinct characteristic with a first of the plurality of motor vehicle inspection devices; reading out the identified identification data set of the motor vehicle from the storage medium; ascertaining first identification data of the motor vehicle, which are specific to the first of the plurality of motor vehicle inspection devices; supplementing the read-out identification data set by the first identification data; storing the supplemented identification data set on the storage medium; identifying the identification data set associated wi

Abstract: A method for wheel suspension alignment includes: providing four measuring heads each having a monocular picture recording device; recording at least three geometrical details of one wheel, respectively, of a vehicle in an initial position, using each of the four measuring heads; carrying out relative motion between the vehicle and the measuring heads from the initial position into at least one further position; recording at least three geometrical details of one wheel, respectively, of the vehicle in the further position, using each of the four measuring heads; carrying out local 3D reconstructions for determining translation vectors, rotation vectors and wheel rotational angles between the at least two positions, and wheel rotational centers and wheel rotational axes from the recorded geometrical details; determining a global scale for the measuring heads by scaling the translation vectors to have the same length; and determining camber, single toe and/or total toe of the vehicle.

Abstract: A motor vehicle test device and a motor vehicle test method are described. The motor vehicle test device includes a control unit for controlling a predefined test sequence; an operator interface device; and at least one measuring device for measuring at least one vehicle parameter. The motor vehicle test device has a vehicle communication interface and diagnosis software. The control device is developed in such a way that it is able to communicate with at least one control unit of the motor vehicle via the vehicle communication interface.

Abstract: A measuring station for measuring vehicles has at least one laser source, which emits laser radiation (20) during operation, and a safety system, which includes at least one sensor, which is set up to detect objects. The safety system is configured in such a way that it switches off the laser source when at least one sensor detects an object which approaches a region in which the laser radiation emitted by the laser source has a particularly high intensity.

Abstract: 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 sRreal; determining the theoretical body vibration excursion sAmodel; optically detecting the positions of the wheel and the body shell of the motor vehicle at a plurality of detection instants during the vibration; minimizing the error function formed from the deviations between the theoretical body vibration excursion sAmodel and the observed body vibration excursion sAreal at the detection instants, and determining the damping constant kA, the spring rate cA, and the body mass mA therefrom; and determining the damping measure ? of the vibration damper.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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 (6) comprising the wheel (5) that is to be measured is detected from different perspectives, and the position of wheel characteristics in the measuring space is evaluated during the measurement.