Piezoelectric element detection system and method and application

Abstract

The invention discloses a piezoelectric element detection system and method and application, and relates to the technical field of detection, the piezoelectric element detection system comprises a driving circuit, a piezoelectric element, a signal detection circuit and a data processing module which are connected in sequence, wherein the driving circuit is used for providing an electrical boundarycondition for the piezoelectric element; and the data processing module is used for comparing and analyzing the actual output signal of the piezoelectric element with the normal signal output range of the piezoelectric element or various abnormal signal output ranges of the piezoelectric element, and judging whether the working state of the piezoelectric element is abnormal or not. The data processing module processes to obtain a real-time output signal of the piezoelectric element, and compares the real-time output signal with a normal signal output range or various abnormal signal output ranges of the piezoelectric element to obtain a result of whether the electrical element is abnormal or not. Aiming at the technical problem that the working state of the piezoelectric element is difficult to judge, the working state of the piezoelectric element can be detected, and the abnormal working state can be judged in advance.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a piezoelectric element detection system, method and application. Background technique [0002] As a smart material, piezoelectric ceramics can realize the mutual conversion between electrical energy and mechanical energy. Among them, the application of piezoelectric cantilever beam structure is more common, and it is widely used in fields such as vibration energy harvesters, energy harvesters, vibration suppression, and micro-drive devices. In these engineering applications, the effect of suppressing vibration or driving is achieved by time-sharingly driving the bimorph piezoelectric cantilever or single-chip piezoelectric cantilever. When the piezoelectric cantilever works abnormally or the piezoelectric chip is aging, the gap between the piezoelectric chip and the substrate When the inter-bonding layer peels off, it is difficult to warn in advance, resulting in serious engin...

AI Technical Summary

Problems solved by technology

[0002] As a smart material, piezoelectric ceramics can realize the mutual conversion between electrical energy and mechanical energy. Among them, the application of piezoelectric cantilever beam structure is more common, and it is widely used in fields such as vibration energy harvesters, energy harvesters, vibration suppression, and micro-drive devices. In these engineering applications, the effect of suppressing vibration or driving is achieved by time-sharingly driving the bimorph piezoelectric cantilever or single-chip piezoelectric cantilever. When the piezoelectric cantilever works abnormally or the piezoelectric chip is aging, the gap between the piezoelectric chip and the substrate When the inter-bonding layer peels off, it is difficult to warn in advance, causing serious engineering failures

The operating frequency of the piezoelectric cantilever is relatively high. Under long-term working conditions, the wear and tear of the piezoelectric cantilever and other faults caused by its own physical properties are transient processes, and it is difficult to judge when the piezoelectric cantilever is in a bad working state.

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