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Method and device of measuring high-frequency small-amplitude ultrasonic mechanical vibration wave power

A technology of mechanical vibration and measuring device, which is applied in the direction of measuring device, measuring ultrasonic wave/sonic wave/infrasonic wave, using electric device, etc., to achieve the effect of high sensitivity and high precision

Pending Publication Date: 2017-05-10
辽宁骏升科技有限公司
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Problems solved by technology

And because the ultrasonic mechanical vibration wave is an ultrasonic discrete signal, it cannot be simply measured by instruments

Method used

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  • Method and device of measuring high-frequency small-amplitude ultrasonic mechanical vibration wave power

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Embodiment Construction

[0037] The specific embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] A method for measuring high-frequency and small-amplitude ultrasonic mechanical vibration wave power, said method comprising:

[0039] Step 1. Install the ultrasonic transducer on a steel plate with a length and width of 200 mm and a thickness of 15 mm as an ultrasonic vibration source, and install a piezoelectric acceleration sensor on the other side of the steel plate corresponding to the vibration source of the transducer;

[0040] Step 2. The piezoelectric acceleration sensor converts the vibrating mechanical wave into a weak charge Q proportional to it, and the output impedance is extremely high (>109Ω);

[0041] Step 3, collect the weak charge signal and waveform signal of the piezoelectric acceleration sensor, and amplify, filter, and adjust the collected signal, and finally obtain a clear voltage waveform and charge...

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Abstract

The invention provides a method and device of measuring high-frequency small-amplitude ultrasonic mechanical vibration wave power. The method can measure the high-frequency small-amplitude ultrasonic mechanical vibration wave power and is a measuring means which is high in precision and high in sensitivity. The device of measuring high-frequency small-amplitude ultrasonic mechanical vibration wave power amplifies, filters and adjusts a micro electric charge signal of the high-frequency small-amplitude ultrasonic mechanical vibration wave detected by a piezoelectricity acceleration sensor by adopting a charge converter stage, an adaptive stage, a low-pass filter, a high-pass filter, a last stage power amplifier and an overload protection stage and the like, so that the micro signal can be detected, and a satisfactory parameter numerical value is provided for calculating the high-frequency small-amplitude ultrasonic mechanical vibration wave power.

Description

technical field [0001] The invention relates to a method for measuring ultrasonic power, in particular to a method and device for measuring the power of high-frequency and small-amplitude ultrasonic mechanical vibration waves. Background technique [0002] Ultrasonic mechanical vibration waves are currently widely used in many fields such as cleaning, crushing, anti-scaling, descaling, medical treatment, mining, etc. The mechanical vibration waves generated by them are ultrasonic mechanical waves with high frequency and small amplitude. [0003] The drastic change in "sound pressure" when the ultrasonic mechanical vibration wave propagates in the liquid causes the liquid to undergo strong "cavitation" and "emulsification" phenomena, generating millions of tiny vortices and cavitation bubbles every second. These tiny vortices and Under the action of sound pressure, cavitation bubbles are rapidly produced in large quantities, and continuously wander and explode violently, gene...

Claims

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Application Information

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IPC IPC(8): G01H11/08
CPCG01H11/08Y02A90/30
Inventor 辛野杨任
Owner 辽宁骏升科技有限公司