Piezoelectric ceramic shallow full-wave exploration transducer

A piezoelectric ceramic and transducer technology, applied in the field of high-density acquisition, can solve problems such as low sensitivity and achieve the effect of high sensitivity

Pending Publication Date: 2019-06-11
沈永进
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the low natural frequency (500Hz) of the traditional moving coil probe and the high natural frequency (2MHz) of the piezoelectric ceramic chip probe, which is not

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
  • Piezoelectric ceramic shallow full-wave exploration transducer
  • Piezoelectric ceramic shallow full-wave exploration transducer
  • Piezoelectric ceramic shallow full-wave exploration transducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0021] As attached figure 1 As shown, the piezoelectric ceramic shallow full-wave exploration transducer of the present invention includes a plastic circular base 1 on which a cylindrical shell 3 is fixed, and the cylindrical shell A piezoelectric tube is arranged in the middle of the base 1 in 3 in the vertical direction, electrodes are respectively plated on the inner wall 5 and the outer wall 6 of the piezoelectric tube, and a cylindrical support is provided on the top of the piezoelectric tube. Mass 2, the central axis of the mass 2 coincides with the central axis of the piezoelectric tube.

[0022] A middle connecting hole is opened in the middle of the base 1 and the mass block 2. A screw 4 passes through the middle connecting hole on the base 1 and the middle connecting hole on the mass block and is fixed to the mass block by nuts and washers. 2 to fix t...

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

The invention discloses a piezoelectric ceramic shallow full-wave exploration transducer. Multiple piezoelectric tubes are used to replace a piezoelectric plate to serve as an acoustoelectric conversion device inside the piezoelectric ceramic shallow full-wave exploration transducer; and the inherent frequency obtained after mass blocks and the piezoelectric tubes are combined is approximate to the frequency of an actual signal, so that receiving sensitivity is high. The multiple piezoelectric tubes are used and connected in a mechanical series connection or parallel connection mode, and therefore the inherent frequency of mechanical vibration can be adjusted to improve the receiving sensitivity. The piezoelectric tubes are connected in series or parallel through electric signals, whereinin case of series connection, the signals are added, and the voltage is large; and in case of parallel connection, currents are added, and the final current is large. By use of the transducer with thepiezoelectric tubes, electric signal amplitude in high-frequency vibration conversion is large, the frequency is high, and the resolution on a stratum is high. The transducer can effectively measurethe stratum sound velocity and wave impedance of a medium at the depth of underground shallow 10-200 meters.

Description

Technical field [0001] The invention is an instrument for measuring and evaluating wave impedance in shallow ground exploration and construction, and particularly relates to a high-density acquisition, high-frequency and high-resolution vibration transducer that can effectively measure the ground sound velocity and wave impedance of 10-200 meters in the shallow underground. Device. Background technique [0002] In the existing seismic wave exploration technology, both the transmission and reception are on the ground. The probe used has moving coil type and piezoelectric ceramic chip type. The problem with the probe is how to improve the resolution and sensitivity. The natural frequency of the moving coil probe is relatively low, only a few hundred Hz. It can only receive low-frequency signals of a few hundred hertz, but cannot receive high-frequency signals of several kilohertz. Therefore, the signal received by the probe has a longer wavelength ratio and lower resolution, whi...

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): G01V1/00
Inventor 沈永进
Owner 沈永进
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap