Abstract:
For substantial relieving the driver of a vehicle with respect to the monitoring of the preceding environment as well as the evaluation of distances and speeds of multiple preceding vehicles, there is provided in accordance with the invention a process for detecting and monitoring a number of vehicles (A through C) preceding one's own vehicle (E), which process divides the preceding environment into at least a near zone (ZII) and at least one distant zone (ZI), wherein for the preceding vehicles (A through C) respectively their lane (S1 through S3), speed (VA through VC) and/or distance to the monitoring vehicle (E) are determined, and on the basis of the respective determined lane (S1 through S3), speed (VA through VC) and/or distance for the preceding vehicles (A through C) their position with respect to the near zone (ZII) or the distant zone (ZI) are determined, wherein on the basis of the respective determined speeds (VA through VC) and/or positions of the preceding vehicles (A through C) the actual speed (VE actual) of the monitoring vehicle (E) is adjusted.
Abstract:
An automatic vehicle steering system is provided for automatically steering a vehicle along a lane in a road. A video sensor is included for generating a plurality of frames of video images of the road. A computer processor analyzes the frames to determine the lane boundaries of the road and the position of the vehicle. The system advantageously utilizes engagement of a cruise control switch and a steering control switch to initiate processing of the image data and automatic steering of the vehicle. In such manner, the reliability and efficiency of the system is increased while at the same time minimizing complexity and cost.
Abstract:
A radar system includes a transmit antenna for transmitting a first RF signal, a receive antenna for receiving a second RF signal, and a receiver circuit coupled to the receive antenna for processing the second RF signal and comprising a video amplifier having a temperature compensating attenuator. A radar receiver includes an RF amplifier, a down-converter and a video amplifier comprising a temperature compensating attenuator. The RF amplifier has an input terminal adapted to receive an RF signal and an output terminal at which an amplified RF signal is provided. The down-converter has an input terminal coupled to the output terminal of the RF amplifier and an output terminal at which a lower frequency signal is provided. The video amplifier has an input terminal coupled to the output terminal of the down-converter and an output terminal at which a filtered signal is provided.
Abstract:
A radar system includes a transmit antenna for transmitting a first RF signal, a receive antenna for receiving a second RF signal, and a receiver circuit coupled to the receive antenna for processing the second RF signal and comprising a video amplifier having a temperature compensating attenuator. A radar receiver includes an RF amplifier, a down-converter and a video amplifier comprising a temperature compensating attenuator. The RF amplifier has an input terminal adapted to receive an RF signal and an output terminal at which an amplified RF signal is provided. The down-converter has an input terminal coupled to the output terminal of the RF amplifier and an output terminal at which a lower frequency signal is provided. The video amplifier has an input terminal coupled to the output terminal of the down-converter and an output terminal at which a filtered signal is provided.
Abstract:
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative of the FFT output signal indicates the presence of an object. The range of the object is determined as a function of the frequency at which the zero crossing occurs. Also described is a detection table containing indicators of the presence or absence of an object within a respective radar beam and processing cycle. At least two such indicators are combined in order to detect the presence of an object within the detection zone and with changing range gates in each of the antenna beams the coverage of the detection zone can be varied.
Abstract:
Bei einem Verfahren zum Betätigen einer hydraulischen Bremseinrichtung in einem Kraftfahrzeug wird radindividuell ein hydraulischer Bremsdruck erzeugt, wobei Daten einer Umfeldsensorik zum Erkennen des aktuellen Seitenabstands des Kraftfahrzeugs von der Sollspur berücksichtigt werden.
Abstract:
The invention relates to a method for outputting an emergency braking signal in the driver's vehicle (1), comprising at least the following steps: detecting a vehicle environment (19), determining objects (5, 5a) in the detected vehicle environment (19), determining a trajectory of a prospective or future driving route of the driver's vehicle (1), determining a situation class, in particular by distinguishing between driving in town and driving on the motorway, determining at least one safety region, in particular a safety travel corridor (26, 126) and/or a trigger threshold, from the trajectory and the degree of attentiveness of the driver, determining whether a detected object (5) is detected in at least one safety travel corridor (26, 126), and outputting an emergency braking signal depending on the determination.
Abstract:
Die Erfindung betrifft ein Verfahren zur Ausgabe eines Notbremssignals in einem Eigen-Fahrzeug (1), mit mindestens folgenden Schritten: Detektieren einer Fahrzeugumgebung (19), Ermitteln von Objekten (5, 5a) in der detektierten Fahrzeugumgebung (19), Ermitteln einer Eigen-Trajektorie einer voraussichtlichen oder zukünftigen Fahrtroute des Eigen-Fahrzeugs (1), Ermitteln einer Situations-Klasse, insbesondere durch Differenzierung zwischen einer Stadt-Fahrt und Autobahn-Fahrt, Ermitteln mindestens eines Sicherheits-Bereichs, insbesondere eines Sicherheits-Fahrschlauchs (26, 126) und/oder einer Auslöseschwelle, aus der Eigen-Trajektorie und dem Aufmerksamkeitsgrad des Fahrers, Ermitteln, ob ein detektiertes Objekt (5) in mindestens einem Sicherheits-Fahrschlauch (26, 126) erfasst wird, und Ausgabe eines Notbrems-Signals in Abhängigkeit der Ermittlung.
Abstract:
System zur Auswertung der Fahrumgebung eines KFZs und zur Beeinflussung der Geschwindigkeit des KFZs in seiner eigenen Fahrspur, mit einer elektronischen Steuereinheit, die mit einem ein für die Wunschgeschwindigkeit des KFZs charakteristisches Signal erzeugenden Signalgeber, einem ein für die Drehrate des KFZs um dessen Hochachse charakteristisches Signal erzeugenden Signalgeber, einem Signalgeber, der für in dem in Fahrtrichtung des KFZs vor dem KFZ liegenden Raum befindliche Objekte hinsichtlich deren Abstand und Orientierung zu dem KFZ charakteristisches Signal erzeugt, das die Geschwindigkeit relativ zur Geschwindigkeit des eigenen Kraftfahrzeuges, und/oder den Abstand relativ zum eigenen Kraftfahrzeug, und/oder den Winkelversatz oder die Seitenablage relativ zur Fahrzeuglängsachse des eigenen KFZs wiedergibt, und einem ein für die Geschwindigkeit wenigstens eines Rades des KFZs charakteristisches Signal erzeugenden Signalgeber, verbunden ist, und die mit wenigstens einem auf das Fahrverhalten des KFZs Einfluß nehmenden Steuergerät verbunden ist, um diesem Ausgangssignale zuzuführen, welche von dem Fahrverhalten des vor dem eigenen KFZ befindlichen KFZs abgeleitet sind, bei dem zur Erkennung von Links- oder Rechtsverkehr in der elektronischen Steuereinheit für vor dem eigenen KFZ in den vorhandenen Fahrspuren herfahrende Kraftfahrzeuge deren Geschwindigkeit ermittelt und hieraus einen Kennwert ableitet, der angibt, ob das eigene KFZ sich in einer Situation mit Links- oder mit Rechtsverkehr befindet.