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

Groove type acoustic surface wave liquid viscosity coefficient measuring device

A surface acoustic wave and liquid viscosity technology, applied in the direction of measuring devices, flow characteristics, instruments, etc., can solve the problem of low sensitivity and achieve high sensitivity, good application prospects, and easy to use

Inactive Publication Date: 2020-07-17
西安柯莱特信息科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low sensitivity of conventional liquid viscosity coefficient measuring devices

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
  • Groove type acoustic surface wave liquid viscosity coefficient measuring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The invention provides a groove type surface acoustic wave liquid viscosity coefficient measuring device, such as figure 1 As shown, the liquid viscosity coefficient measurement device includes a substrate 1 , a groove 2 , a piezoelectric material layer 3 , a first interdigital transducer 4 , and a second interdigital transducer 5 . A groove 2 is provided on the substrate 1 . The piezoelectric material layer 3 is disposed on the surface of the substrate 1 and the trench 2 . The material of the piezoelectric material layer 3 is lithium tantalate, lithium niobate or quartz. The first interdigital transducer 4 and the second interdigital transducer 5 are arranged on the piezoelectric material layer 3, and the first interdigital transducer 4 and the second interdigital transducer 5 are arranged on both sides of the groove 2. side.

[0018] When in use, a fixed frequency or variable frequency radio frequency signal is applied on the first interdigital transducer 4, and th...

Embodiment 2

[0024] On the basis of Embodiment 1, holes are provided in the piezoelectric material layer 3 on the trench 2 , the size of the holes is less than one percent of the resonant wavelength of the surface acoustic wave, and the holes do not penetrate the piezoelectric material layer 3 . The hole set on the groove 2 increases the surface area of ​​the piezoelectric material layer 3, enhances the influence of the liquid on the surface acoustic wave, changes the influence of the liquid on the effective wavelength of the surface acoustic wave more, changes the resonance frequency more, and improves the Detection sensitivity. The size of the hole is less than one percent of the resonance wavelength of the surface acoustic wave, because the resonance is not formed in the hole here, but the effect of the liquid and the surface acoustic wave is increased by using the hole.

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 provides a groove type acoustic surface wave liquid viscosity coefficient measuring device. A groove is arranged on a substrate, piezoelectric material layers are arranged on the upper surfaces of the substrate and the groove, and a first interdigital transducer and a second interdigital transducer are arranged on two sides of the groove. During application, the first interdigital transducer excites surface acoustic waves, liquid to be measured is placed in the groove, the second interdigital transducer receives the surface acoustic waves, and the viscosity coefficient of the liquid is measured through the received surface acoustic waves. Therefore, the device has the advantages of being convenient to use and high in sensitivity, and has a good application prospect in the field of liquid viscosity coefficient measurement.

Description

technical field [0001] The invention relates to the field of liquid viscosity coefficient measurement, in particular to a groove type surface acoustic wave liquid viscosity coefficient measurement device. Background technique [0002] Viscosity is a measure of the viscosity of a fluid, which is an expression of the fluid's flow force and its internal friction phenomenon. Viscosity has decisive significance for various lubricating oils, quality identification and determination of uses, and combustion performance of various fuel oils. So liquid viscosity coefficient measurement is very important. Traditionally commonly used viscometers include capillary, falling ball, cone-plate, and drum types. The sensitivity of traditional liquid viscosity coefficient measuring devices is low. Contents of the invention [0003] In order to solve the above problems, the present invention provides a groove type surface acoustic wave liquid viscosity coefficient measuring device, which li...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00
CPCG01N11/00G01N2011/0073
Inventor 不公告发明人
Owner 西安柯莱特信息科技有限公司