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Piezoelectric sensor and processing method thereof

A piezoelectric sensor and processing method technology, applied in the field of sensors, can solve problems such as stability, electrical characteristics, difficult control of service life, and performance differences of piezoelectric elements, and achieve great practical application value, low cost, and improved survival rate Effect

Inactive Publication Date: 2012-04-18
CHINA AIRPLANT STRENGTH RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional use of piezoelectric sensors is to paste and connect piezoelectric elements one by one, which will cause performance differences among piezoelectric elements, and it is difficult to control stability, electrical characteristics, and service life.

Method used

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  • Piezoelectric sensor and processing method thereof
  • Piezoelectric sensor and processing method thereof
  • Piezoelectric sensor and processing method thereof

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Embodiment Construction

[0026] The present invention will be further described below by specific embodiment:

[0027] See figure 1 , which is a structural schematic diagram of a preferred embodiment of the piezoelectric sensor of the present invention. The piezoelectric sensor includes a substrate 1 , a piezoelectric sheet 2 , an in-layer wiring line 3 , and a BNC plug 4 for connecting the sensor to the outside. Wherein, the piezoelectric sheet 2 , the interlayer connection line 3 , and the BNC plug 4 connecting the sensor and the outside are all arranged on the base 1 . The connection interface BNC plug 4 includes 5 pins a, b, c, d, e in total. Wherein, the piezoelectric sheet 2 is arranged on a disc of the base 1, the middle and upper part is connected to the e pin of the BNC plug 4 through the interlayer wiring line 3, and the middle and lower part of the piezoelectric sheet 2 is connected to the a pin of the BNC plug 4 , such a connection helps to improve anti-interference ability and electrom...

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Abstract

The invention belongs to a sensor technology, and in particular relates to a processing method of a piezoelectric sensor, aiming at providing the piezoelectric sensor with high survival rate and strong anti-interference capacity. In the invention, a copper foil is stuck onto a flexible substrate and a connecting line of a piezoelectric element is etched; and after the connecting line is etched onthe flexible substrate, the substrate with the line, the piezoelectric element and curing glue are laminated and solidified in a laminating machine, and piezoelectric pieces are welded on the line byhot press and packaged into a whole. By combination of the flexible line and a rigid line, the survival rate of a product is increased effectively, and bonding pads are arranged on positive and negative surfaces of a BNC (Bayonet Nut Connector) head, so that the both surfaces can be welded directly and packaged by using the special solid glue, thus the survival rate is high up to one hundred percent; meanwhile, the consistency and the integrity of the product are improved. The processing method disclosed by the invention has the advantages of simple process, lower cost and larger practical application value.

Description

Technical field: [0001] The invention belongs to sensor technology, and relates to a processing method of a piezoelectric sensor. Background technique [0002] Since the late 20th century, due to the catastrophic consequences of aviation accidents around the world, structural health monitoring technology has been proposed and developed rapidly. This technology studies the installation or integration of sensor functional units in the structure to realize the online monitoring of the structural health status. Among many sensors and drivers, piezoelectric elements can be used as both drivers and sensors due to their forward and reverse piezoelectric effects. Therefore, it has received the attention of many researchers and has been widely adopted. [0003] The traditional use of piezoelectric sensors is to paste and connect piezoelectric elements one by one, which will cause performance differences among piezoelectric elements, and it is difficult to control stability, electri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/12
Inventor 李闵行肖迎春郭佳白玮
Owner CHINA AIRPLANT STRENGTH RES INST
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