Method and device for detecting physical property of object

A technology for physical properties and objects, applied in the field of detecting physical properties of objects, can solve the problems of high equipment price, difficult to quantitatively analyze the target object, difficult to quantitatively analyze the physical properties such as the elasticity of the target object, etc., to achieve simple methods and simple device structure. , the effect of simple calculation

Inactive Publication Date: 2015-02-18
杨松
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  • Claims
  • Application Information

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Problems solved by technology

In the prior art, if the sound source and the target object are relatively stationary, it is difficult to quantitatively analyze the physical properties of the target object such as elasticity based on the reflected wave of the ultrasonic wa

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  • Method and device for detecting physical property of object
  • Method and device for detecting physical property of object
  • Method and device for detecting physical property of object

Examples

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[0029] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] refer to figure 1 , an embodiment of the present invention provides a method for detecting physical properties of an object, comprising steps:

[0031] S1. Transmit a composite sound wave of ultrasonic waves and low-frequency sound waves with a fixed frequency and fixed amplitude to the target object; the composite sound wave is a mixed wave of ultrasonic waves and low-frequency sound waves. Squeeze and pull are formed, so that the reflected wave of the ultrasonic wave on the target object produces phase and amplitude changes due to this squeeze and pull. It emits fixed-frequency ultrasonic waves and low-frequency sound waves. The frequency of the low-frequency sound waves squeezing and pulling the target object is fixed, so that the reflected waves of the ultrasonic waves show periodic changes, which is conve...

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Abstract

The invention discloses a method and device for detecting a physical property of an object. The method comprises the following steps: transmitting fixed frequency, ultrasonic waves with fixed amplitude and composite sound waves of low-frequency sound waves to a target object; receiving reflected waves of the ultrasonic waves; contrasting the phase change and amplitude change of the transmitting waves and reflected waves of the ultrasonic waves, so as to analyze the physical property of the object. The device comprises a controller, an analyzer, an ultrasonic receiver, a low-frequency sound wave generator and an ultrasonic generator, wherein the controller is connected with the ultrasonic generator and the low-frequency sound wave generator, and controls the transmitting of the ultrasonic generator and the low-frequency sound wave generator; the ultrasonic receiver is connected with the analyzer and further receives reflected waves of the ultrasonic waves, converts the reflected waves to an electrical signal and sends the electrical signal to the analyzer; the analyzer contrasts the phase change and amplitude change of transmitting waves and reflected waves of the ultrasonic waves and analyzes the physical property of the object. The method is simple, small in calculated amount and accurate in result, and the device is simple in structure and low in price.

Description

technical field [0001] The invention relates to the field of ultrasonic applications, in particular to a method and a device for detecting physical properties of objects. Background technique [0002] In the process of ultrasonic transmission, reflection and refraction will occur when encountering the interface. The strength of the reflected wave is closely related to the physical properties such as the density and hardness of the interface. Certain methods such as the Doppler effect can be used to analyze the transmitted wave and reflected wave of the ultrasonic wave. , so as to obtain the physical properties of the interface object. In the prior art, if the sound source and the target object are relatively stationary, it is difficult to quantitatively analyze the physical properties of the target object such as elasticity based on the reflected wave of the ultrasonic wave, and the use of the Doppler effect is only limited to the analysis of the target moving speed, which i...

Claims

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Application Information

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IPC IPC(8): G01N29/00A61B8/00A61B8/04
CPCA61B8/00A61B8/04G01N29/00
Inventor 杨松
Owner 杨松
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