摘要:
Ultrasonic location systems are provided. These ultrasonic location systems include two or more wave transmitters, two or more wave receivers, and a mapping component that controls the operation of the transmitters and the receivers. The mapping component relies on collaborative operation of multiple transmitters and multiple phased-array receivers where each of the transmitters emits a short burst of sound wave in a pre-defined sequence and after every burst all phased-array receivers detect the wave reflected from surrounding objects. The mapping component uses the position of the transmitters, the position of the receivers, the time of transmission, the time of reception, and the phase shift of the waves to calculate a time of flight and a direction of arrival for the reflections. The mapping component uses triangulation to determine a distance between any physical objects acting as sources of reflection and one or more physical objects having a recorded position relative to the receivers.
摘要:
A device for detecting a moving object in a blind spot includes: at least one first ultrasonic sensor of a side view assist system; and a control unit for determining the distance and/or speed and/or position of the moving object. The control unit processes at least one signal of a second ultrasonic sensor of a driving assistance system for monitoring the blind spot.
摘要:
An environment monitoring system for a vehicle includes at least two distance sensors for detecting distance by measuring the propagation time of detection signals. The distance sensors are each designed as a transmitting unit and receiving unit for the detection signals and, in a direct operating mode, emit detection signals, receive reflected components of the detection signals emitted by the distance sensors; and emit active measurement signals according thereto. The system also includes a control device that receives the measurement signals of the distance sensors and determines the object distance of a detected object. At least one distance sensor additionally can be operated in an indirect operating mode to detect a detection signal emitted by another distance sensor and reflected by the object and to generate an indirect measurement signal.
摘要:
An object detection apparatus for detecting an object around a moving object carrying the apparatus by transmitting a probe wave and receiving reflections of the probe wave from the object via a plurality of ranging sensors attached to the moving object. In the apparatus, a position determiner determines whether or not a position of the object calculated by a position calculator based on the reflections received by a pair of adjacent ranging sensors, from one of which is the probe wave is transmitted, is out of an overlapping range of ranges of object detection for the respective adjacent ranging sensors. A position invalidator is configured to, based on the determination made by the position determiner, determine that the object position calculated by the position calculator is invalid.
摘要:
The present invention relates to a method of determining a position of an obstacle, an apparatus of determining a position of an obstacle, a parking assist method, and a parking assist system, and more particularly, to a technology of determining a position of an obstacle by comparing propagation distances a direct signal and an indirect signal.
摘要:
An acoustic tracking system for determining a position of an object is provided that includes one or more receivers that detect an object based on an acoustic signal transmitted by one or more transmitters. The system also includes a processing component that determines a relative position of the detected object with respect to the one or more receivers and the one or more transmitters and selects at least three pairs of receivers and transmitters. Each selected pair includes a receiver from the one or more receivers and a transmitter from the one or more transmitters. The processing component also determines a position of the detected object using the selected at least three pairs of receivers and transmitters.
摘要:
A method for sensing a wind and controlling a vehicle using a parking assist system (PAS) including a plurality of ultrasonic sensors and output devices is provided. The method includes controlling, by a controller, a first ultrasonic sensor disposed at a front side of a vehicle to transmit an ultrasonic signal. Respective primary indirect signals received from the ultrasonic sensors at the front side other than the first ultrasonic sensor are received by the controller. A second ultrasonic sensor adjacent to the first ultrasonic sensor to transmit the ultrasonic signal is controlled by the controller. Respective primary indirect signals received from the ultrasonic sensors at the front side other than the second ultrasonic sensor are received by the controller. The direction of the wind is sensed by the controller through a comparison of relative sizes of waveforms of each primary indirect signal and each secondary indirect signal.
摘要:
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.
摘要:
An object detecting apparatus includes a first transmission and reception unit having a first transmitter and a first receiver, a second transmission and reception unit having a second transmitter and a second receiver, and a failure judging section. The first receiver produces a first output signal corresponding to a transmission wave, which is transmitted directly from the second transmitter to the first receiver. The second receiver produces a second output signal corresponding to a transmission wave, which is transmitted directly from the first transmitter to the second receiver. Using at least one of the first output signal and the second output signal, the failure judging section judges whether a failure of the first transmitter or the second receiver has occurred, or judges whether a failure of the first transmission and reception unit or the second transmission and reception unit has occurred.
摘要:
A method for detecting objects having a low height, using a system for obstacle detection in vehicles, the system for obstacle detection including distance sensors for ascertaining the distance from objects and an arrangement for evaluation. The method includes performing the following: (a) continually recording the distance from an object using the distance sensors or recording the distance from an object at specified intervals, (b) checking whether the object continues to be recorded by the distance sensors when approaching the vehicle, in response to falling below a specified distance, or whether it vanishes from the detection range of the distance sensors, (c) detecting the object, which vanishes from the detection range of the distance sensors, as being an object of low height. Also described is a method for supporting a driver during a driving maneuver.