Fractal elimination method for mass data in ultrasonic intelligent detection

A technology of intelligent detection and massive data, which is applied in the application of sound wave/ultrasonic wave/infrasonic wave to analyze solids, electrical digital data processing, and special data processing applications, etc. The effect of the amount of stored data

Inactive Publication Date: 2006-11-22
JIANGSU UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

However, how to make the detection system autonomously and in real time determine whether the signal is defective or not without human participation is a technical problem
However, there are very few reports on fractal algorithms and their applications for ultrasonic signal processing.

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  • Fractal elimination method for mass data in ultrasonic intelligent detection
  • Fractal elimination method for mass data in ultrasonic intelligent detection
  • Fractal elimination method for mass data in ultrasonic intelligent detection

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Embodiment Construction

[0019] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] 1) Problem description

[0021] Let the signal received by any sensor be:

[0022] x i (t)=s i (t)+n i (t), i=1, 2, ..., M (1) where, s i (t) is the defect echo signal received by the i-th sensor, n i (t) is the noise signal received by the i-th sensor, and M is the total number of sensors on the array. when s i (t) is zero, x i (t) is a defect-free signal; when s i (t) is not zero, x i (t) is a defective signal. while the noise n i (t) is always present.

[0023] x i (t) After A / D conversion, a discrete sequence is obtained: X i =[x i1 , x i2 ,...,x iN ], i=1, 2, ..., N, N is the number of signal interception points.

[0024] Use these N discrete data points to judge whether there is a defect signal in real time, and provide guarantee for real-time data storage. Assuming that the d-dimensional featur...

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Abstract

The related fractal elimination method for great much data in ultrasonic intelligent detection comprises: resolving the great much data storage into a duality recognition problem; with finite noise-contained sequence fractal R / S algorithm, extracting Hurst index from signal, presenting a fractal linear level index to distinguish signal. This invention stores only the defective ultrasonic echo signal, has well real-time feature, and high accuracy and stability.

Description

Technical field: [0001] The invention relates to a fractal elimination method for massive data in ultrasonic intelligent detection, and is a processing method especially suitable for generating massive detection data during long-time and long-distance ultrasonic automatic detection and ultrasonic array automatic detection. It can accurately and quickly distinguish the types of data, eliminate useless parts of the data, and retain useful data, which can greatly reduce the amount of stored data and solve the current technical bottleneck of data storage. Background technique: [0002] Ultrasonic intelligent detection, automatic detection and multi-sensor array detection have a broad application market, and these test processes are often carried out for a long time and over a long distance (or large area), requiring the test system to be able to effectively record test data for post-analysis and analysis. Evaluate. Because the ultrasonic waves used for detection often have a hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/44G01N29/04G06F17/00
Inventor 宋寿鹏
Owner JIANGSU UNIV
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