Carrier component with integrated sensor unit

A technology of sensor unit and sensor device, which is applied in the direction of vibrating fluids, instruments, vehicle parts, etc., can solve the problems of sensor system manufacturing cost and complex structure of sensor unit, and achieve the effect of easy production and avoiding seams

Inactive Publication Date: 2013-12-04
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another disadvantage of the known device is that the sensor unit has to be completely produced before being introduced into the bumper, and the sensor unit is often complex in construction
Furthermore, the production of such sensor systems is complex and adaptation to different applications can only be conditional

Method used

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  • Carrier component with integrated sensor unit
  • Carrier component with integrated sensor unit
  • Carrier component with integrated sensor unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] figure 1 A sensor arrangement 10 is shown, wherein the sensor unit 11 forms part of a bumper 14 . The sensor unit 11 is realized here as an ultrasound transducer with a membrane 12 and a piezoelectric actuator 16 . Furthermore, the membrane 12 is formed by the bumper 14 itself, in that the bumper 14 is designed with a smaller wall thickness 20 in the region of the sensor unit 11 and a fiber mat 40 is embedded in this region. The fiber mat 40 is preferably embedded in the bumper 14 during its injection. The fiber mat can be arranged in the region of the cutout 32 or the edge extends beyond this region, said cutout being formed by the small wall thickness of the carrier element. As a result, the area of ​​the diaphragm 12 can be configured more intensively and typical parameters of the sensor unit, such as the resonance frequency, can be adapted. In order to transmit and / or receive ultrasonic signals, the piezoelectric actuator 16 is directly connected to the bumper 14...

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PUM

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Abstract

This invention relates to a sensor assembly (10) compirsing at least one sensor unit (11).The sensor assembly (10) has a sensor unit (11), which is arranged in a support element (14) and a vibratable membrane (12) connected with a piezoelectric actuator (16). The membrane is positively integrated as a separate component or in the form of a fiber mat in the support element. A damping material (24) is applied on a vibratable portion (26) of the membrane. The membrane is designed as a separate component and the support element is made of different material. An independent claim is included for a method for producing a sensor assembly.

Description

technical field [0001] The invention relates to a sensor device having at least one sensor unit, which is arranged in a carrier element and comprises a vibrating membrane connected to a piezoelectric actuator. Furthermore, the invention relates to a method for producing such a sensor device and its use for distance measurement in a motor vehicle. Background technique [0002] Today's vehicles are equipped with driver assistance systems, which assist the driver in the operation of the vehicle. Such driver assistance systems typically include an environment sensor system which monitors the surroundings of the vehicle in order, for example, to select an object representing a potential obstacle on the roadway. For monitoring the surroundings in the close range, ultrasonic sensors are usually used which determine objects and their distance to the motor vehicle. In this case, ultrasonic sensors are often accommodated in the bumper of the vehicle. [0003] An ultrasonic sensor i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/08B06B1/06G01S7/523G01S15/931
CPCG01S15/931G01S7/521B60R19/483G01S2015/938
Inventor D·巴提拉
Owner ROBERT BOSCH GMBH
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