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Surroundings sensing device with ultrasonic converter and motor vehicle with such surroundings sensing device

A technology for ultrasonic converters and sensing devices, which is applied in the direction of sound-generating instruments, piezoelectric/electrostrictive transducers, resonant transducers, instruments, etc. And other issues

Active Publication Date: 2018-12-14
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The known prior art in the field of ultrasonic transducers has the disadvantage that they generally do not provide, or only provide, expensive external damping of the vibration behavior, which often leads to increased assembly effort and additionally required installation space
However, such a damping is particularly advantageous for the vibration behavior of the ultrasonic transducer in order to achieve a suitable oscillation behavior and damping behavior for ambient sensing and should be provided in each case, but not bring structural or structural defects

Method used

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  • Surroundings sensing device with ultrasonic converter and motor vehicle with such surroundings sensing device
  • Surroundings sensing device with ultrasonic converter and motor vehicle with such surroundings sensing device
  • Surroundings sensing device with ultrasonic converter and motor vehicle with such surroundings sensing device

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Embodiment Construction

[0037] figure 1 The surroundings sensing device 1 according to the first preferred embodiment of the invention is shown in a lateral cross-sectional view in an inactive state. The surrounding environment sensing device 1 includes an ultrasonic transducer 11 and a membrane 12, wherein the ultrasonic transducer 11 is composed of a cylindrical front body 111, a cylindrical transducer element 112, and a cylindrical rear body 113 in this order. become. The front body 111 , the converter element 112 and the rear body 113 can alternatively also assume a configuration other than cylindrical, for example a cuboid or the like. The precursor 111 is coupled to the membrane 12 with its end side facing the membrane 12 . This means that in the embodiment shown, this end side forms the contact surface with respect to the membrane 12 . The coupling between the precursor 111 and the membrane 12 can be effected both indirectly and directly, wherein indirect contact means that at least one fu...

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Abstract

The present invention discloses a surroundings-sensing system having an ultrasonic transducer that has at least one transducer element and at least one resonance body, and having a membrane for sound transmission, the surroundings-sensing system being designed to transmit and / or receive ultrasound signals. The resonance body has a front body and a rear body and is coupled to the membrane at an end face of the front body, the front body and / or the rear body of the resonance body consisting of at least one composite material. Furthermore, the present invention discloses a motor vehicle having a bumper, side mirror or door section and at least one surroundings-sensing system of this type, the membrane of the surroundings-sensing system being formed by an outer shell of the bumper, the side mirror or the door section, and the ultrasonic transducer being hidden behind the outer shell.

Description

technical field [0001] The invention relates to a surroundings sensing device for surroundings sensing based on ultrasound using acoustic transducers, such as the surroundings sensing device is also combined with motor vehicles and moving or stationary machines (such as robots) , agricultural machinery or construction machinery) and thus, for example, as a surroundings sensing aid for a corresponding parking assistance system. Furthermore, the invention relates to a motor vehicle in which at least one such surroundings sensing device is arranged on a bumper, a side mirror or a door section of the motor vehicle. Background technique [0002] Recently in motor vehicles in this technical field, ultrasound-based ambient sensors are often used, wherein piezoelectric-based acoustic transducers are usually used. Here, the ultrasonic signal is usually transmitted through a medium such as air or water from the transmitter to the receiver or from the transmitter into the surrounding ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B06B1/06B06B3/00G10K11/00H04R17/10
CPCB06B1/06B06B1/0644B06B1/0681B06B3/00G10K11/004
Inventor D·巴尔特伊拉A·格拉赫
Owner ROBERT BOSCH GMBH
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