Unlock instant, AI-driven research and patent intelligence for your innovation.

Circuit and method for inspecting piezoelectric resonance mode by time-domain transient current

A transient current and piezoelectric resonance technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of low test efficiency and high price, and achieve the effect of low cost and simple measurement circuit

Inactive Publication Date: 2006-08-16
XI AN JIAOTONG UNIV
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The detection of the piezoelectric resonance of the piezoelectric vibrator has been using the spectrum method of point-by-point scanning in the frequency domain. This method requires complex and expensive testing equipment. For example, HP (now Agilent) has a corresponding impedance spectrum instrument, but Expensive, low testing efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Circuit and method for inspecting piezoelectric resonance mode by time-domain transient current
  • Circuit and method for inspecting piezoelectric resonance mode by time-domain transient current
  • Circuit and method for inspecting piezoelectric resonance mode by time-domain transient current

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1: Using the present invention to detect other piezoelectric materials.

[0075] In this example, PZT ceramics, PMN-32PT ceramics, PMN-32PT single crystal and PMN ceramics are selected as test objects. The sample is a small square or small disc, so the possible piezoelectric vibration modes are plane radial stretching vibration mode and thickness stretching mode. That is to say, it should only be possible to observe vibration currents of two frequencies on the transient current spectrum. Whereas PMN ceramics are not piezoelectric, so no resonant current should be observed. Figure 10 This is evidenced by the medium transient current. At the same time, the data about the resonant frequency obtained after Fourier transforming the transient current of PZT ceramics, PMN-32PT ceramics and PMN-32PT single crystal is also consistent with the data obtained by using the spectrum scanning method.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A circuit utilizing time-domain transient current to detect piezoelectric resonant mode consists of digital-controllable voltage source, current-limiting resistance R1 and heavy-duty capacity C. It is featured as connecting N-MOSFET switch between said R1 and said C, also connecting resistance R3 and driving chip to N-MOSFET switch, connecting one end of driving chip to triggering signal, connecting resistance R2 to digital oscilloscope through resistance R4 and setting piezoelectric vibrator between resistance R2and R3.Its detecting method is also disclose.

Description

technical field [0001] The invention belongs to the technical field of materials and components used for piezoelectric vibrator resonance detection, and relates to a method and circuit for detecting different resonance modes of a piezoelectric vibrator, in particular to a method and a method for detecting piezoelectric resonance modes using time-domain transient currents. its circuit. technical background [0002] Piezoelectric crystals are an important class of electronic functional materials and one of the key basic materials in the information field. Piezoelectric crystals are the product of the intersection of two disciplines, information science and material science, and have become the material basis for the development of many new disciplines in the information field. Various electronic devices made of piezoelectric crystals have the functions of collecting, transmitting, converting, processing, displaying, executing and countering information...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01R23/02G01R31/00
Inventor 姚熹靳立魏晓勇冯玉军
Owner XI AN JIAOTONG UNIV