摘要:
A method controls a motor using pulse width modulation (PWM). The method involves measuring the PWM frequency; determining the carrier frequency of a set radio transmitter; and matching the PWM frequency to the carrier frequency of the radio transmitter in such a manner that an integer multiple of the PWM frequency corresponds to the carrier frequency or an integer multiple of the PWM frequency lies in the middle between two carrier frequencies.
摘要:
A method and a device for estimating the coefficient of friction by a 3D camera. The 3D camera records at least one image of the vehicle's surroundings. The image data of the 3D camera is used to produce a height profile of the road surface in the entire space ahead of the vehicle. Based on the height profile, the local coefficient of friction of the road surface that is to be expected in the space ahead of the vehicle is estimated.
摘要:
The invention relates to a method for estimating the roll angle in a travelling vehicle (7), comprising the following steps. In step a), a camera (8) is used to record a sequence of images of the vehicle's surroundings, in particular of the road (1) ahead. In step b), at least one signature (S1-S6) on the road surface is extracted from the camera images, i.e. said signature is determined and tracked. The changed position of the at least one signature (S1-S6) in one or more subsequent camera image(s) is used in step c) to determine in which direction the camera (8) is turned with regard to the roll angle.The value of the roll angle is estimated in step d).For this purpose, the roll angle is either directly estimated in step d1), taking into account the vehicle speed (v) and an imaging model of the camera (8), or the roll angle is iteratively increased or decreased by a defined correction angle in step d2) until the roll angle sufficiently compensates for the turning of the camera (8). On this basis, the estimated roll angle is obtained as an overall correction value.
摘要:
A current distribution device for a high-voltage network, in particular in a motor vehicle, includes at least two first connections that can be locked in such a way that, after a locking device is closed, a connector plugged into the connection can no longer be removed, wherein the first connections have a first locking plate as a common locking device.
摘要:
A method for classifying objects into obstacles and non-obstacles for a vehicle is described. The vehicle comprises a sensor for covering the surroundings that detects stationary and moving objects in a scene in front of a vehicle. Where required, the path of the motion of the objects is tracked. The method provides one or several observers, wherein one observer classifies an object according to predetermined features and contributes to an overall classification result when there are several observers. An observer detects the path of the motion of vehicles in the surroundings of at least one stationary object and classifies the stationary object in dependence thereon.
摘要:
The invention relates to a method for the recognition of traffic signs that at least include one main sign and one assigned additional sign, and to a respective device. A method according to the invention comprises the following steps:A camera records at least one image of the vehicle environment.The presence and class of one or several main traffic signs is recognized from the data of the image recorded by the camera.The presence of one or several additional sign(s) assigned to the main sign is recognized.The additional sign(s) is/are classified to the extent possible using a pattern recognition method.If classification was not or not completely possible using the pattern recognition method, a text recognition method reads and interprets the text of the additional sign to determine its information content.In a further step, a relevance assessment is performed in which the recognized text is compared with situational information such as time of day, weekday, distance the vehicle has traveled since passing the traffic sign and additional sign that were recognized, weight of the vehicle, whether the road is wet, outside temperature, position of the lane the vehicle is in, activation of the turn signal and/or a recommended turn from an active route planning feature.
摘要:
An electronic circuit includes a conductor path on a circuit board, and at least one SMD component, electronic component and/or electromechanical component mounted on the circuit board and connected to the conductor path. A circuit connection is established via a soldered joint and a spring-loaded or stressed springy contact bridge that provides fuse protection. In the event of excessive power dissipation or high temperature, the soldered joint melts or softens and the contact bridge springs open to interrupt the circuit.
摘要:
The invention relates to a circuit arrangement for a control device (SG). The circuit arrangement serves to implement a fail-silent function/a fail-safe function, particularly with a hardware-realized detection of a fault/fault state in a microcontroller (MC) of the circuit arrangement, as well as to interrupt the communication of the control device (SG) with a communications network (BN) in the event of a fault.
摘要:
A semiconductor circuit for an electronic control device for use in a system in a motor vehicle, said system not being mechanically intrinsically safe, and a method for monitoring the semiconductor circuit, wherein the semiconductor circuit comprises a functional computer (FR), at least one monitoring unit (MU) and a monitoring computer (UR), wherein the functional computer (FR), the monitoring unit (MU) and the monitoring computer (UR) are each physically independent of each other, and the full or a restricted function of the semiconductor circuit is ensured by the functional computer (FR) in the event of a failure of the monitoring computer (UR) and vice versa.
摘要:
To support a driver in guiding a road vehicle, the lane markings of the road, traffic signs and/or vehicle license plates are detected by an environment sensor system, which produces corresponding image data, which is evaluated by an image evaluation system by comparison to stored country-specific data. From that evaluation, at least one country estimation signal is generated in an image processor, and then a country signal indicating the current location of the vehicle is generated from the at least one country estimation signal by a microprocessor. The country signal correspondingly activates a driver information device outputting country-specific information for guidance of the vehicle and/or the country signal is fed to a driver assistance system that supports the guidance of the vehicle.