Patent application number | Description | Published |
20090071227 | METHOD FOR DETERMINING THE TIRE DIAMETERS OF A MOTOR VEHICLE - A method and control for determining the tire diameters of a motor vehicle by comparing at least two opposite wheels. To provide the lowest possible measuring effort while simultaneously ensuring the highest possible precision, a driving maneuver including at least one cornering operation is defined as calibration drive, and the change in the vehicle orientation in the calibration drive is determined. The control includes sensors to determine the change in the vehicle orientation in a calibration drive. | 03-19-2009 |
20100182874 | METHOD AND DEVICE FOR DETECTION OF SURROUNDINGS - In a method and a device for detecting the surroundings, carrier waves in the form of transmission pulses are transmitted by at least one transducer, and reflections of the pulses are detected by the pulse-echo method. In this manner, the successive transmission pulses of one transducer or various transducers operated at the same time are differentiable by individual signal modulation. | 07-22-2010 |
20100214872 | Ultrasonic Sensor Having Time-Variable Sensitivity Threshold Values - An ultrasonic sensor is described, in which a time curve for the sensitivity is specified via threshold values which are assigned to individual interpolation points. The position in time of the interpolation points for the ultrasonic sensor is variable. | 08-26-2010 |
20120017684 | SENSOR DEVICE AND METHOD FOR OPERATING A SENSOR DEVICE - A sensor device described having a sensor, in particular an ultrasound sensor, having a generating and detecting arrangement to generate and detect waves, in particular sound waves, the detection arrangement converting received waves into electric signals, and the electric signals being evaluable by an evaluation unit. A function-monitoring device is configured to determine an impedance characteristic curve of the sensor as a function of an excitation frequency is provided. Also described is a method for operating the sensor device. | 01-26-2012 |
20120303258 | Method for mapping the surroundings of a vehicle - A method for mapping surroundings of a vehicle, objects in the surroundings of the vehicle being detected with the aid of sensors and particular detected objects being described by two coordinate points and also by a position fuzziness assigned to the particular coordinate point, the coordinate points and the position fuzziness values being stored in an interface in the form of data which may be accessed by driver assistance systems of the vehicle. A method is also described for ascertaining the collision probability of a vehicle with an object, in which the surroundings of the vehicle are initially mapped using the method for mapping the surroundings of a vehicle, a travel path to be traveled by the vehicle is ascertained in a subsequent step, and the degree of overlap between the object and the travel path and also the collision probability are finally determined, taking the position fuzziness into account. | 11-29-2012 |
20130128699 | METHOD AND DEVICE FOR DETERMINING THE POSITION OF AN OBJECT IN RELATION TO A VEHICLE, IN PARTICULAR A MOTOR VEHICLE, FOR USE IN A DRIVER ASSISTANCE SYSTEM OF THE VEHICLE - In a method and a device for determining the position of an object in relation to a vehicle, for use in a driver assistance system of the vehicle, a first ultrasound pulse is transmitted by an ultrasound sensor situated on the vehicle, the ultrasound pulse including multiple predefined transmission frequencies which result in a variation of the directional characteristic of the ultrasound sensor. The transmitted first ultrasound pulse is reflected on the object and is received again as a first echo pulse. A frequency spectrum of the first echo pulse is subsequently determined, and a first absolute value of a relative offset angle of the object is determined as a function of the frequency spectrum of the first echo pulse and the directional characteristics. | 05-23-2013 |
20130312525 | METHOD AND DEVICE FOR ACOUSTICALLY SENSING AN AREA - A method for acoustically sensing an area is described. An acoustic transmit pulse is transmitted into the area by an acoustic transducer and a received signal is acquired with the aid of the transducer, in order to receive the transmit pulse reflected back from the area. Within a post-pulse oscillation time of the transducer, which directly follows the emission of the transmit pulse, the actual phase response of the received signal is determined. In the event the actual phase response deviates from a predefined setpoint phase response, an object is detected within the area. Also described is a device for acoustically sensing an area, which is designed to carry out the method. | 11-28-2013 |
20140331772 | ULTRASONIC MEASURING SYSTEM HAVING A REDUCED MINIMUM RANGE AND METHOD FOR DETECTING AN OBSTACLE - An ultrasonic measuring system is described for detecting an obstacle using a resonant transducer element for transmitting an ultrasonic pulse and for generating a received signal which includes the ultrasonic echo pulse reflected from the obstacle, the transducer element generating a decay signal having its resonance frequency after transmitting an ultrasonic pulse. The ultrasonic measuring system includes an evaluation unit having a control unit which is designed to activate the transducer element for transmitting the ultrasonic pulse with the aid of a frequency-modulated transmitted signal generated by the control unit, the frequency modulation taking place with the aid of a modulation signal in such a way that the to signature of the ultrasonic pulse differs from that of the decay signal. The evaluation unit is designed to recognize the echo pulse based on an evaluation of a correlation signal which is generated with the aid of at least one correlation filter and which originates from the correlation of the signal generated by the resonant transducer element with the transmitted signal. Furthermore, a corresponding method is provided for detecting an obstacle with the aid of ultrasound, as well as a vehicle assistance system having the ultrasonic measuring system. | 11-13-2014 |