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
CN102419183AInactive Publication Date: 2012-04-18CHINA AIRPLANT STRENGTH RES INST
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA AIRPLANT STRENGTH RES INST
Publication Date
2012-04-18
Estimated Expiration
Not applicable ยท inactive patent

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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.
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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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