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Acoustic transducer array with wideband receiving elements

A technology of receiving elements and sending elements, which is applied in the field of sensor systems, can solve the problems of reducing system sensitivity and achieve the effect of increasing the range of action and improving sensitivity

Active Publication Date: 2019-01-01
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

but this reduces the sensitivity of the overall system

Method used

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  • Acoustic transducer array with wideband receiving elements
  • Acoustic transducer array with wideband receiving elements
  • Acoustic transducer array with wideband receiving elements

Examples

Experimental program
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Embodiment Construction

[0026] Figure 1a A sensor device 1 for detecting surroundings of a vehicle is shown, which has a transmitting element 2 and a plurality of receiving elements 3 . The receiving elements 3 are arranged geometrically in an array 4 . Both the transmitting element 2 and the receiving element 3 are located on the same carrier structure 5 . In this case, the sensor device 1 is not limited to a transmitter element 2 .

[0027] exist Figure 1b Another sensor arrangement for detecting the surroundings of a vehicle is shown in . The sensor device comprises two transmitting elements 2 arranged in a line with a vertical offset relative to one another and having different geometrical dimensions. Furthermore, the sensor device has an array 4 with a plurality of receiving elements 3 .

[0028] In a non-illustrated exemplary embodiment, two transmitting elements 2 can have a mutual horizontal offset.

[0029] In an exemplary embodiment not shown, there can be several transmission elemen...

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Abstract

A sensor system of a vehicle for locating an object located in the surroundings of the vehicle has at least one transmitting element, wherein the at least one transmitting element has a bandwidth with a transmitting frequency and the at least one transmitting element is designed for transmitting ultrasonic signals at the transmission frequency, and the sensor system has at least one receiving element which is functionally separated from the at least one transmitting element, wherein the at least one receiving element has a bandwidth, the The bandwidth has a center frequency and the at least one receiving element is configured to receive ultrasonic signals which are reflected at objects surrounding the vehicle, characterized in that the bandwidth of the receiving element is greater than that of the transmitting element bandwidth.

Description

technical field [0001] The invention relates to a sensor system for locating objects of a vehicle, having at least one transmitting element and at least one receiving element, wherein the receiving element and the transmitting element are functionally separated from each other. Background technique [0002] An ultrasonic sensor system for locating objects in the vehicle surroundings is formed from a plurality of individual ultrasonic transducers arranged in a distributed manner on the vehicle. The ultrasonic transducer assumes both the function of the ultrasonic transmitter and the function of the ultrasonic receiver. The ultrasonic transducer is realized as a so-called curved transducer element. The design of the curved transducer element is achieved in such a way that the oscillation mode for generating and detecting the ultrasound signal corresponds to the center frequency of the ultrasound system. The frequency shift between the transmitted ultrasonic signal and the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S15/93G01S7/54G01S15/00G01S15/87G01S15/931
CPCG01S15/931G01S7/521G01S7/54G01S13/0209G01S15/003G01S15/582G01S15/586G01S15/876
Inventor M·利布勒尔A·格拉赫
Owner ROBERT BOSCH GMBH
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