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A standing wave node and antinode positioning detection structure

A standing wave and wave node technology, which is applied in the direction of measuring ultrasonic/sonic/infrasonic waves, measuring devices, using wave/particle radiation, etc., can solve problems such as troublesome operation, no intelligent control of single-chip microcomputer, and single experimental method

Active Publication Date: 2021-04-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The commonly used experimental method for the demonstration of the standing wave phenomenon is carried out by mechanical and mechanical methods. The experimental equipment is large in size and troublesome to operate; however, the experiment is manually adjusted, without automatic control, and there is no single-chip intelligent control, and all of them measure atmospheric pressure. The speed of sound under the condition, can not do the experimental content under the abnormal condition of high pressure or low pressure, the experimental method is single

Method used

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  • A standing wave node and antinode positioning detection structure
  • A standing wave node and antinode positioning detection structure
  • A standing wave node and antinode positioning detection structure

Examples

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Embodiment 1

[0021] This embodiment provides a figure 1 The standing wave node and antinode positioning detection structure shown includes a base layer 1, a first metal layer 2 disposed above the base layer 1, an elastic medium layer 3 is disposed above the first metal layer 2, and the A second metal layer 4 is arranged above the elastic medium layer 3; the structure is placed in the standing wave 5 to be measured, and due to the standing wave 5 to be measured, the second metal layer 4 will vibrate, thereby changing the second metal layer The distance between the layer 4 and the first metal layer 2, so that the absorption rate of the incident light 6 incident on the second metal layer 4 and the first metal layer 2 will change, and the standing wave can be judged by detecting the absorption change of the incident light 6 Nodes, antinodes and other positions.

[0022] Further, the base layer 1 is made of polymethyl methacrylate or silicon dioxide; the base layer 1 mainly plays a supporting ...

Embodiment 2

[0030] This example uses as figure 1 The standing wave node and antinode positioning detection structure shown is used to detect standing waves. The standing wave node and antinode positioning detection structure is placed in the standing wave sound field to be measured, and when the structure is moved along a certain direction , if the size of the detected spectrum is constant, then this direction is perpendicular to the propagation direction of the sound wave; when it is not vertical, when the structure is moved, the detected spectral signal will change with the position, when moving When the direction changes, when the range of spectral change is the largest or the difference between the maximum value and the minimum value of the spectral change is the largest, the moving direction at this time is the sound wave propagation direction. When moving along the direction of sound wave propagation, when the detected spectrum vibrates between the maximum value and the minimum valu...

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Abstract

The invention relates to a standing wave node and antinode positioning detection structure, comprising a base layer, a first metal layer arranged above the base layer, an elastic medium layer is arranged above the first metal layer, and the elastic medium layer A second metal layer is arranged above the standing wave; the nodes and antinodes of the standing wave locate the detection structure, and the vibration caused by the standing wave to be measured will cause the position of the second metal layer to be different, thereby affecting the absorption of incident light. By detecting the absorption situation, the position of the nodes and antinodes of the standing wave can be detected, and it can also be used to detect the propagation direction of the sound.

Description

technical field [0001] The invention relates to the technical field of vibration detection, in particular to a standing wave node and antinode positioning detection structure. Background technique [0002] A standing wave (stationary wave) is a distribution state formed along the transmission line by two waves (not necessarily radio waves) with the same frequency and opposite transmission directions. One of the waves is generally a reflection of the other. Antinodes appear at the point where the two voltages (or currents) add, and nodes form at the point where the two voltages (or currents) subtract. On the waveform, the positions of the nodes and antinodes are always constant, giving the impression of "stationary, but its instantaneous value changes with time. [0003] The commonly used experimental method for the demonstration of the standing wave phenomenon is carried out by mechanical and mechanical methods. The experimental equipment is large in size and troublesome t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H9/00G09B23/14
CPCG01H9/00G09B23/14
Inventor 刘黎明易子川迟锋王红航张智水玲玲
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST