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Device for sending and/or receiving acoustic signals

A technology of acoustic signals and sound waves, which is applied in measuring devices, sound-generating devices, and re-radiation of sound waves, etc., can solve problems such as unutilized and effective transmission power loss, and achieve the effect of reducing loss and high degree of freedom

Active Publication Date: 2020-06-16
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this results in a loss in the effective transmitted power, since the sound radiated from the back of the diaphragm is not utilized

Method used

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  • Device for sending and/or receiving acoustic signals
  • Device for sending and/or receiving acoustic signals
  • Device for sending and/or receiving acoustic signals

Examples

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Embodiment Construction

[0022] figure 1 In a first embodiment, a device 1 for detecting the surroundings by sending and / or receiving acoustic signals is shown. The device 1 comprises a housing 2 which has at least one first channel 3 and one second channel 4 which each connect an inner volume of the device 1 with the surroundings of the device 1 . In this first embodiment, the housing 2 is a sensor housing, which is a sound-tight object. In this case, sound-tight means that the housing 2 has a corresponding mass and consists of a corresponding material, so that it vibrates only to a small extent when it is excited by the acoustic vibrations emitted by the transducer unit 5 of the device 1 . It should be pointed out that in alternative embodiments the housing 2 can also be a component which fulfills other tasks unrelated to the transmission and / or reception of acoustic signals. The housing 2 can thus be, for example, a bumper, a headlight or another component of the vehicle. In this embodiment, th...

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Abstract

The invention relates to a device (1) for transmitting and / or receiving acoustic signals. The device comprises a housing (2) and a transducer unit (5), the housing having at least one first channel (3) and one second channel (4), which respectively make the device (1) the inner volume is connected to the surroundings of said device (1), the transducer unit is arranged to emit and / or be excited by acoustic signals from a first and a second direction, wherein the first channel (3) terminates on the side opposite to the transducer unit (5) in the first direction and the second channel (4) in the second direction to the The transducer unit (5) terminates on the opposite side, and wherein the transducer unit (5) is arranged in the inner volume of the device (1) and thus with respect to the channels (3, 4 ) arranged so that the sound waves emitted from the transducer unit (5) are conducted through the channels (3, 4) to the surrounding environment of the device (1) and / or from the device (1) The sound waves of the surrounding environment are conducted to the transducer unit (5) through the channels (3, 4).

Description

technical field [0001] The invention relates to a device for transmitting and / or receiving acoustic signals. Background technique [0002] Devices for transmitting and / or receiving acoustic signals, such as ultrasonic sensors, are especially frequently used in the field of vehicle technology. In such ultrasonic sensors, an electroacoustic transducer is typically coupled to a diaphragm. Here, the mechanical vibrations of the electroacoustic transducer are transmitted to the diaphragm in order to generate the largest possible sound radiation surface. In this case, the sound that escapes from the large membrane surface is radiated directly from the membrane into the space to be measured or is picked up by the membrane in a reversed manner when receiving an acoustic signal. However, this results in a loss in the effective transmitted power, since the sound radiated from the rear of the diaphragm is not utilized. [0003] Ultrasonic sensors each having a sound-conducting eleme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B06B1/06G10K9/122G10K11/22G01S15/931
CPCG01S15/931G01S7/521G10K9/122G10K11/22G01S2015/938
Inventor M·卡尔
Owner ROBERT BOSCH GMBH
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