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Portable processing and receiving device and method for electromagnetic ultrasonic signals based on FPGA

An electromagnetic ultrasonic and digital processing technology, which is applied in the processing of detection response signals, measurement devices, detection of response signals, etc., can solve the problems of lack of data processing, large volume of industrial measurement devices, etc., and achieve the reduction of hardware analog filter structure, The effect of fast processing speed and high integration

Pending Publication Date: 2018-10-30
HEBEI UNIV OF TECH
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Problems solved by technology

[0004] Aiming at the problems of bulky industrial measurement devices and lack of data processing in complex environments, the technical problem to be solved by the present invention is to provide a portable electromagnetic ultrasonic signal digital processing receiving device and method based on FPGA

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  • Portable processing and receiving device and method for electromagnetic ultrasonic signals based on FPGA
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  • Portable processing and receiving device and method for electromagnetic ultrasonic signals based on FPGA

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Embodiment Construction

[0027] For reference and clarity, technical terms, abbreviations or abbreviations used hereinafter are summarized as follows:

[0028] Field Programmable Gate Array, Field-Programmable GateArray, referred to as FPGA;

[0029] Fast Fourier Transformation, Fast Fourier Transformation, referred to as FFT;

[0030] Synchronous Dynamic Random Access Memory, SDRAM for short;

[0031] First-in-first-out queue, First Input First Output, referred to as FIFO;

[0032] Electromagnetic ultrasonic transducer, ElectromagneticAcoustic Transducers, referred to as EMAT.

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments and accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without ma...

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Abstract

The invention relates to a portable digital processing and receiving device and method for electromagnetic ultrasonic signals based on an FPGA. The device comprises an analog-digital conversion circuit, an FPGA, a sampling key, an SDRAM memory, a storage key and a display screen, wherein the analog-digital conversion circuit is taken as an analog signal receiving end of the device and is used forreceiving the electromagnetic ultrasonic signals, the output end of the analog-digital conversion circuit is connected with the FPGA, the input end of the FPGA is connected with a sampling key and a storage key respectively, the output end of the FPGA is connected with the display screen and the SDRAM memory respectively, the display screen is used for displaying characteristic signal waveforms and waveform relevant information, and data processed by the FPGA is stored into the SDRAM memory through the storage key; and the FPGA comprises an analog-digital conversion module, a data processing module, a display module and a storage module. The device is small in volume, low in cost and power consumption and can be used for receiving high-speed electromagnetic ultrasonic signals in a complexenvironment and carrying out digital processing and waveform display on the electromagnetic ultrasonic signals.

Description

technical field [0001] The invention belongs to the technical field of non-destructive testing signal processing, and in particular relates to a FPGA-based portable electromagnetic ultrasonic signal digital processing and receiving device and method. Background technique [0002] In today's defect detection methods for metal materials, electromagnetic ultrasonic nondestructive testing is increasingly playing a vital role. This design starts from the actual engineering and takes into account the actual working environment of metal sheets. Electromagnetic ultrasonic nondestructive testing technology also has many technical problems: first, the receiving end of the electromagnetic ultrasonic transducer has the characteristics of low signal-to-noise ratio of ultrasonic signals, which is not conducive to the identification of characteristic signals; second, for the real-time display of waveforms, in the actual industrial environment Under the circumstances, most of them use bulky...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/24G01N29/42G01N29/36G01N29/44G01N29/46
CPCG01N29/2412G01N29/36G01N29/42G01N29/4427G01N29/4454G01N29/46G01N2291/0289G01N2291/0234
Inventor 刘素贞魏建张闯金亮杨庆新
Owner HEBEI UNIV OF TECH
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