Sensor calibration device based on embedded PVDF piezoelectric film and calibration method thereof
A technology of piezoelectric film and calibration device, which is applied in the field of geophysics and can solve problems such as the overall influence of the response
Pending Publication Date: 2022-05-27
TIANJIN UNIV
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
During this calibration process, the response of each component in the system contributes to the overall
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] The present invention will be described in detail below with reference to the embodiments and drawings, but it should be understood that the embodiments and drawings are only used to describe the present invention by way of example, but do not limit the protection scope of the present invention. All reasonable transformations and combinations included within the scope of the inventive concept of the present invention fall into the protection scope of the present invention.
[0024] The sensor calibration device based on the embedded PVDF piezoelectric film includes a test platform 11 in the shape of a triangular prism, and the bottom surface of the triangular prism is an isosceles right triangle; a through hole 12 is provided on the test platform 11, and the through hole 12 penetrates the test platform. The two bottom surfaces of 11, the sensor is coupled to the test platform 11 through the through hole 12;
[0025] The sensor is connected to the amplifier device to cap...
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
Login to View More Abstract
The invention discloses a sensor calibration device based on an embedded PVDF piezoelectric film and a calibration method thereof. The sensor calibration device comprises a triangular prism-shaped test platform, and the bottom surface of a triangular prism is an isosceles right triangle; a through hole is formed in the test platform, the through hole penetrates through two bottom surfaces of the test platform, and the sensor is coupled into the test platform through the through hole; the sensor is connected with the amplifier device to capture signals; the side surface where the hypotenuse of the isosceles right triangle of the test platform is located is a top surface, the top surface is horizontally arranged, and a plastic straight pipe is vertically fixed on the top surface; a channel is arranged in the plastic straight pipe for the small ball to vertically fall into, and a scale is arranged on the plastic straight pipe and used for measuring the impact speed of the small ball. The small ball serves as a calibration source, the method is simple, parameters are easy to determine, and the defects of the sound emission system in precision and application range can be overcome.
Description
technical field [0001] The invention relates to the technical field of geophysics, in particular to a sensor calibration device based on an embedded PVDF piezoelectric film and a calibration method thereof. Background technique [0002] Acoustic emission refers to the phenomenon that the material rapidly releases the strain energy locally after being stressed to generate transient elastic waves. When the acoustic emission method is used to detect the material, the relevant information of the acoustic emission source inside the detected material can be obtained. In rocks, acoustic emission is an accompanying phenomenon of the initiation, propagation and fracture of micro-cracks in the rock. The acoustic emission method can be used to obtain the evolution process of instability and fracture inside the rock, so as to locate the internal fracture position, and to identify the internal acoustic emission source. After analyzing and processing the information of the rock, a lot of ...
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
Login to View More IPC IPC(8): G01N29/30G01N29/14G01L27/00G01L25/00
CPCG01N29/30G01N29/14G01L25/00G01L27/00G01N2291/0232
Inventor 夏开文郭智寅徐冉董鹏张康华王璞徐颖
Owner TIANJIN UNIV