Surroundings-sensing system having an ultrasonic transducer, and a motor vehicle having such a surroundings-sensing system

A technology of ultrasonic transducers and surrounding environment, applied in the directions of sound-producing instruments, piezoelectric/electrostrictive transducers, resonant transducers, instruments, etc. question

Inactive Publication Date: 2016-02-10
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, only a minimal improvement in the visual perceptibility of the ultrasonic transducers can be achieved in this way
[0005] A further disadvantage of the prior art in the field of ultrasonic transducers is 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 system having an ultrasonic transducer, and a motor vehicle having such a surroundings-sensing system
  • Surroundings-sensing system having an ultrasonic transducer, and a motor vehicle having such a surroundings-sensing system
  • Surroundings-sensing system having an ultrasonic transducer, and a motor vehicle having such a surroundings-sensing system

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Embodiment Construction

[0041] figure 1 The surroundings sensing device 1 according to the first preferred embodiment of the invention is shown in a side cross-sectional view in an inactivated state. The surrounding environment sensing device 1 includes an ultrasonic transducer 11 and a membrane 12, wherein the ultrasonic transducer 11 is composited by a precursor 111, a transducer element 112 and a rear body 113 in this order. The precursor 111 is coupled to the membrane 12 with an end side 1111 facing the membrane 12 (also referred to as end face section 1111 or end face region 1111 ). This means that, in the embodiment shown, the end side 1111 forms the contact surface with respect to the membrane 12 . The coupling between precursor 111 and membrane 12 can take place both indirectly and directly, wherein indirect contact means that at least one further material layer, for example a liquid layer such as oil or Gel for improved acoustic coupling. Alternatively, there can be a mechanical coupling...

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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 according to the invention 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 end face of the front body coupled to the membrane being planar. 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 machines or construction machines), 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 envir...

Claims

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Application Information

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