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Ultrasonic based edge detection method

An edge detection and ultrasonic technology, applied in the field of measurement, can solve the problems of reducing the efficiency of detection, time-consuming, labor-intensive, errors, etc., and achieve the effect of saving manpower

Inactive Publication Date: 2017-02-08
THE 45TH RES INST OF CETC
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  • Description
  • Claims
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Problems solved by technology

However, through manual visual inspection, it will cause a large error in the actual operation process. Specifically, it is necessary to manipulate the non-destructive testing equipment after many repetitions to find the approximate edge of the device. Although it can be found, it reduces the detection efficiency. Time-consuming
However, to determine the size of the device based on the basic data of the device to be tested will still require manual visual inspection to determine the size of the device due to the loss of the basic material of the device.

Method used

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  • Ultrasonic based edge detection method
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  • Ultrasonic based edge detection method

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] Ultrasonic waves are sound waves with a frequency exceeding 20Khz. Because of its very short wavelength, it propagates in a straight line like light waves. Some of the ultrasonic waves are reflected at the interface, and some will pass through the interface. The relative strength of ultrasonic reflection and transmission at the interface is determined by the acoustic impedance of the materials on both sides of the interface. Ultrasonic has the advantages of high resolution and high sensitivity. Using ultrasonic flaw detection can detect the size, position and shape of subtle defects in real time. Ultrasound is often used in non-destructive testing equipment (such as: ultrasonic scanning microscope), using sonar to find submarines and fish schools, physical examination equipment, ultrasonic cleaning machines (15~50KHz), ultrasonic humidifiers, ultrason...

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Abstract

The invention relates to an edge detection method and device based on ultrasonic waves. The edge detection method comprises a first step of placing an energy converter above a device to be detected and starting the energy converter, a second step of moving the energy converter on a plane, a third step of recording the position where the energy converter is located and can receive change of ultrasonic signals, and executing the second step. By means of the characteristics that ultrasonic waves are reflected when encountering an interface, the edge position of the device can be obtained through monitoring of change of the ultrasonic wave signals sent to the surface of the device by the energy converter. The edge detection method and device based on the ultrasonic waves improves the accuracy of edge position detection of the device and the detection efficiency and saves manpower.

Description

technical field [0001] The invention belongs to the field of measurement and relates to an edge detection method based on ultrasonic waves. Background technique [0002] Before the device is subjected to non-destructive testing, the size of the device under test needs to be determined. In the prior art, the size of the device is usually determined manually or according to the basic information of the device under test. However, through manual visual inspection, it will cause a large error in the actual operation process. Specifically, it is necessary to manipulate the non-destructive testing equipment after many repetitions to find the approximate edge of the device. Although it can be found, it reduces the detection efficiency. Time-consuming. However, determining the size of the device based on the basic data of the device to be tested will still require manual visual inspection to determine the size of the device when the basic material of the device is lost. Contents...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B17/00
Inventor 连军莉魏鹏付纯鹤周庆亚黄晓鹏
Owner THE 45TH RES INST OF CETC
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