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Ultrasonic measurement system, kinematic mechanism and method for operating an ultrasonic transmitter-receiver

A receiving device, ultrasonic measurement technology, applied in the direction of measuring device, radio wave measurement system, sound wave re-radiation, etc., can solve the problems of detection robustness limit, limited measurement update rate, low anti-interference, etc.

Active Publication Date: 2021-04-20
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This limits the system's measurement update rate (measurement cycles per unit of time) in today's systems, since typically four front or rear sensors have overlapping "visible areas" or detection areas and thus cannot be performed simultaneously in one measurement cycle. send
In addition, the use of only one fixed operating frequency results in limitations in the robustness of the detection, for example due to low interference immunity with respect to ultrasonic signals of other vehicles

Method used

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  • Ultrasonic measurement system, kinematic mechanism and method for operating an ultrasonic transmitter-receiver

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Embodiment Construction

[0029] figure 1 A schematic top view of an exemplary embodiment of an ultrasonic measuring system 20 according to the invention with ultrasonic sensors 1 , 2 , 3 , 4 , 5 , 6 in the bumper of a car 10 as kinematics is shown. . The ultrasound sensors 1 , 2 , 3 , 4 , 5 , 6 have corresponding transmission lobes 11 , 12 , 13 , 14 , 15 , 16 . The ultrasonic sensors 1 , 2 , 3 , 4 , 5 , 6 are respectively connected via signal lines to a central control unit 7 as an analysis and processing unit. Depending on the surrounding objects, the ultrasonic sensors 1 , 2 , 3 , 4 , 5 , 6 are only capable of receiving cross-echoes from each other only conditionally. By way of example, the ultrasonic sensors 1 , 2 , 3 , 4 , 5 , 6 are divided into groups G12 , G23 , G34 , G45 , G56 in order to be able to take into account the possibility or impossibility of cross echoes. For example, groups G12 and G45 are arranged so far apart from one another that an echo based on the signal of group G45 cannot...

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Abstract

The invention proposes an ultrasonic measuring system, a kinematic mechanism and a method for operating an ultrasonic transmitter-receiver. The method comprises the steps of: transmitting a first signal representing a first codeword in a first measurement period by means of a first ultrasonic sensor of a first set of ultrasonic sensors; transmitting a second signal by means of a second ultrasonic sensor of said first set receiving echoes of said first signal and said second signal by means of a third ultrasonic sensor; distinguishing said echoes from portions of said first signal from said echoes by means of decoding of said codeword part of the second signal.

Description

technical field [0001] The invention relates to an ultrasonic measuring system, a kinematic mechanism and a method for operating an ultrasonic transceiver for a kinematic mechanism. The invention also relates, inter alia, to improvements in signal recognition and preprocessing by means of coding. Background technique [0002] The use of ultrasonic transmitter-receivers ("ultrasonic sensors" for short) in automotive engineering has been known for many years for environment detection and distance measurement. Driver assistance functions are likewise often based on ultrasonic sensors, which are usually arranged in groups of 4 to 6 per bumper on the kinematics (hereinafter “vehicle” for the sake of simplicity). [0003] DE 10 2008 007 667 A1 discloses a method for operating a parking assistance system, in which ultrasound-based distance sensors are activated in two different modes with temporally different transmission sequences. In particular for the transition it is proposed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S15/87G01S15/931G01S15/10
CPCG01S15/10G01S15/87G01S15/93G01S15/102G01S15/104G01S15/931G01S7/52G01S15/878
Inventor A·克洛茨T·赖纳M·舒曼
Owner ROBERT BOSCH GMBH
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