Abstract: A driver assistance system and method for operating a driver assistance system, the driver assistance system provides a plurality of distance sensors, in particular ultrasonic sensors, which are spatially distributed and communicate with each other with the aid of a data bus. The sensors have an identical design and may be initialized by themselves using a method without a control unit and may synchronize the distance detection among themselves. The overall result of a measurement of the sensors is supplied to an output unit and displayed to the driver.

Abstract: A driver assistance system and method for operating a driver assistance system, the driver assistance system provides a plurality of distance sensors, in particular ultrasonic sensors, which are spatially distributed and communicate with each other with the aid of a data bus. The sensors have an identical design and may be initialized by themselves using a method without a control unit and may synchronize the distance detection among themselves. The overall result of a measurement of the sensors is supplied to an output unit and displayed to the driver.

Abstract: A device for distance measurement with the aid of electromagnetic waves includes a transmitting device for transmitting, in a measuring mode, electromagnetic waves as a transmitted signal to a measured object, a receiving device for receiving, in the measuring mode, the electromagnetic waves back-scattered by the measured object as a received signal, and an analyzer device for determining, in an analysis mode, the propagation time, and for outputting a measured distance, the analyzer device having a compensation unit for compensating distance measurements carried out during the analysis mode.

Abstract: A control/evaluation system for a set of sensors, in particular in motor vehicles, has a plurality of areas, each of which has at least one controller and a plurality of sensor devices connected thereto; the controllers may be connected to each other for a common application function.

Abstract: To protect vehicle occupants in dangerous situations, the distance of the vehicle to a roadside object, such as a guardrail, etc., is determined and compared to a critical distance. If the actual distance is less than the critical distance, alarm devices are triggered and/or reversible restraining devices are deployed. The critical distance may be determined as a function of the host vehicle velocity.

Abstract: A method of acoustic localization of persons in a detection space by using sound-emitting elements and sound pick-up elements by emitting acoustic signals into the detection space and measuring the reflected acoustic signals has the steps: measurement of acoustic signals in the frequency range of human speech using a plurality of sound pick-up elements; determination of the skew between the acoustic signals measured at the sound pick-up elements; calculation of the position of the sound source from the skew and the positions of the sound pick-up elements.

Abstract: A digital delay line including a first feedback delay line having a first number of interlinked first delay elements, at least one second feedback counter having a second number of second interlinked counting elements, the counting elements being clocked by one of the first delay elements.

Abstract: The present invention provides a method and a device for controlling and evaluating at least one sensor device jointly used by a plurality of applications, in particular occupant-assistance/occupant-protection applications in an apparatus of locomotion, having the following steps: the measuring of certain locomotion apparatus parameters by a situation-detection device for determining the situation of the apparatus of locomotion with respect to its surroundings; the querying of the locomotion apparatus situation by a control device connected to the situation-detection device; and the activation of an application corresponding to the locomotion apparatus situation, by the control device.

Abstract: Transmitted and received radar pulses are correlated in a receiver-side mixer for the measurement of the clearance distance and the speed of objects, using radar pulses. In a control device for specifying range gates, transmitter-side radar pulses that are able to be supplied to the mixer are continuously changed increasingly and/or decreasingly with respect to their pulse delay. Using a switchover device, one may switch over to the Doppler frequency measuring operation or reset to the clearance distance measuring operation.

Abstract: The present invention relates to a radar measuring device which, with a simple design, ensures reliable distance determination even when a mixed signal is zero, and a method for operating a radar measuring device. The radar measuring device includes: A high-frequency oscillator (11) which emits two different carrier frequency signals (F1, F2), A first switching device (14) for switching the carrier frequency signals (F1, F2) as a function of first pulse signals (P1) and emitting radar pulse signals (T1, 2), A transmission antenna (16) and a receiving antenna (18), A second switching device (24) for switching the carrier frequency signals as a function of a delayed second pulse signal (P2) and emitting delayed radar pulse signals (S1, 2), A mixing device (21) for mixing received radar signals (R1, 2) with the delayed radar pulse signals (S1, 2) and emitting mixed signals (M1, 2).

Abstract: A sensor system for determining distances is provided. A predefining unit controls an amplifier unit and/or a sensor unit as a function of selectable predefined values for a detection cycle. Contrary to known sensor systems, different detection cycles are implementable in a simple manner using this procedure.

Abstract: A method and an apparatus for operating a radar sensor system with a number of adjacent individual sensors (3, 4, 5, 6), extensively synchronized with one another, for determining the position of a target object (15) are proposed. In one measurement cycle, the transit time of the radar signal emitted from one individual sensor and reflected by the target object to this individual sensor (3, 4, 5, 6) (direct echo (13, 14)) and to a different individual sensor (3, 4, 5, 6) (cross echo (16)) is evaluated. From the evaluation of the direct and cross echoes (13, 14, 16), at least the position of the target object (15) is determined, and a detection quality signal (Q) is ascertained, and once a predetermined amount of the detection quality signal (Q) is reached for a target object (15), a calibration is performed.

Abstract: To protect vehicle occupants in dangerous situations, the distance of the vehicle to a roadside object, such as a guardrail, etc., is determined and compared to a critical distance. If the actual distance is less than the critical distance, alarm devices are triggered and/or reversible restraining devices are deployed. The critical distance may be determined as a function of the host vehicle velocity.

Abstract: The present invention relates to a radar measuring device which, with a simple design, ensures reliable distance determination even when a mixed signal is zero, and a method for operating a radar measuring device. The radar measuring device includes: A high-frequency oscillator (11) which emits two different carrier frequency signals (F1, F2), A first switching device (14) for switching the carrier frequency signals (F1, F2) as a function of first pulse signals (P1) and emitting radar pulse signals (T1, 2), A transmission antenna (16) and a receiving antenna (18), A second switching device (24) for switching the carrier frequency signals as a function of a delayed second pulse signal (P2) and emitting delayed radar pulse signals (S1, 2), A mixing device (21) for mixing received radar signals (R1, 2) with the delayed radar pulse signals (S1, 2) and emitting mixed signals (M1, 2).

Abstract: In order to create a method for eliminating dummy objects in short-range pulse radar sensors, in which radar pulses are transmitted at a defined frequency, and the time until they are reflected by an object and received again is measured, and besides the transmitted pulse (TX pulse), a delayed second pulse (RX pulse) is generated, which avoids the known disadvantages of the prior art and with which the elimination of dummy objects in short-range pulse radar sensors can be assured, it is provided that the transmitted pulses (TX pulses) and the additionally generated second pulses (RX pulses) delayed relative to them are modulated by a binary phase-shift keying process.

Abstract: In order to create a method for eliminating dummy objects in short-range pulse radar sensors, in which radar pulses are transmitted at a defined frequency, and the time until they are reflected by an object and received again is measured, and besides the transmitted pulse (TX pulse), a delayed second pulse (RX pulse) is generated, which avoids the known disadvantages of the prior art and with which the elimination of dummy objects in short-range pulse radar sensors can be assured, it is provided that the transmitted pulses (TX pulses) and the additionally generated second pulses (RX pulses) delayed relative to them are modulated by a binary phase-shift keying process.

Abstract: A digital delay line including a first feedback delay line having a first number of interlinked first delay elements, at least one second feedback counter having a second number of second interlinked counting elements, the counting elements being clocked by one of the first delay elements.

Abstract: A system for verifying the access authorization to a vehicle has a vehicle-based transceiver unit which has at least two transmitting/receiving antennas spaced a distance apart in or on the vehicle, and it has a transponder unit which is set up for detection of its presence and for exchanging a predetermined identification request/response sequence through or with the transceiver unit within a predetermined detection area in or around the vehicle, wherein the transceiver unit has calculation/analyzing means which perform the detection of a position of the transponder unit by using a time and/or phase measurement based on a mathematical geometric method in response to a reply signal transmitted by the transponder and received by the at least two transmitting/receiving antennas in response to the identification request.

Abstract: A method and an apparatus for operating a radar sensor system with a number of adjacent individual sensors (3, 4, 5, 6), extensively synchronized with one another, for determining the position of a target object (15) are proposed. In one measurement cycle, the transit time of the radar signal emitted from one individual sensor and reflected by the target object to this individual sensor (3, 4, 5, 6) (direct echo (13, 14)) and to a different individual sensor (3, 4, 5, 6) (cross echo (16)) is evaluated. From the evaluation of the direct and cross echoes (13, 14, 16), at least the position of the target object (15) is determined, and a detection quality signal (Q) is ascertained, and once a predetermined amount of the detection quality signal (Q) is reached for a target object (15), a calibration is performed.

Abstract: A distance sensor device, in particular as a component of a parking aid or reversing aid for a motor vehicle, includes one or more distance sensors and a distance sensor control device for the purpose of activating the distance sensor or sensors via a respective signal line using an activation pulse that is quasi-digital and time-analog. At least one of the distance sensors has two different modes of operation. The modes of operation may be switched by varying the duration and/or amplitude of the activation from the distance sensor control device.