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Ultrasound Sensor

An ultrasonic sensor, ultrasonic signal technology, applied in the field of ultrasonic sensors

Active Publication Date: 2014-09-10
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is thus the possibility of structure-borne sound being transmitted from the diaphragm via the filling material to the housing

Method used

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  • Ultrasound Sensor

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] An ultrasonic sensor designed according to the invention is shown in the single figure.

[0023] The ultrasonic sensor 1 comprises a diaphragm pot 3 which is fastened to a housing 7 by means of a union nut 5 .

[0024] On the bottom 9 of the diaphragm pot 3 a sound transducer 11 is mounted on the inner side. Ultrasonic pulses are generated by means of the acoustic transducer 11 , which vibrate the bottom 9 of the diaphragm pot 3 . The vibrations are transmitted outwards, whereby sound pulses are emitted by the ultrasonic sensor 1 . In the presence of an object, the emitted sound pulse is reflected by said object and the echo is picked up by the bottom 9 of the diaphragm pot 3 . As a result, the bottom 9 of the diaphragm pot 3 is vibrated, which vibrations are transmitted to the sound transducer 11 . Thus, vibrations are detected by the acoustic transducer 11 and converted into a signal. In this way, the distance to the object can be determined via the acoustic propa...

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Abstract

The invention relates to an ultrasound sensor for sending and / or receiving ultrasound signals, comprising a diaphragm cup (3) having a transducer (11) and a housing (7), wherein the diaphragm cup (3) is releasably connected to the housing (7), a decoupling ring (13) is accommodated between the membrane cup (3) and the housing (7), and the membrane cup (3) is filled with a filling material (15). The decoupling ring (13) comprises a lip (27) that is designed in such a way that a gap (31) is formed between the lip (27) and the housing inner wall and the filling material (15) is accommodated in a space at the decoupling ring (13), which space is enclosed by the membrane cup (3) and the lip (27). The invention further relates to a use of the ultrasound sensor.

Description

technical field [0001] The invention proceeds from an ultrasonic sensor according to the preamble of claim 1 . Furthermore, the invention also relates to the use of ultrasonic sensors. Background technique [0002] Fields of use of ultrasonic sensors are, for example, driver assistance systems in motor vehicles. In the driver assistance system, the distance to objects surrounding the motor vehicle is determined by means of ultrasonic sensors. For this purpose, the ultrasonic sensor emits sound pulses which are reflected by objects in the surroundings of the motor vehicle. The echoes thus reflected are received and the distance to the object is determined from the propagation time of the sound. [0003] Ultrasonic sensors for object distance measurement, for example in motor vehicles, usually have a diaphragm (for example in the form of a diaphragm pot) which can be vibrated by means of an acoustic transducer. Piezoelectric elements are usually used as sound transducers. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K9/122
CPCG10K9/122G10K9/22
Inventor D·巴尔特伊拉B·巴亚尔塞汉
Owner ROBERT BOSCH GMBH
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