A TMS320C6416 DSP-based high-speed data acquisition system

Özdemir, Ahmet Turan; Atci, Ahmet

doi:10.1109/siu.2015.7130107

Cited by 1 publication

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References 1 publication

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“…This circuit design facilitates the analog detection process, but it also complicates the structural design and increases costs. Data acquisition and analysis devices often employ an FPGA (Field-Programmable Gate Array) [ 13 , 14 , 15 ] or DSP (Digital Signal Processor) [ 16 , 17 ], which sends processed signals to a host computer via a serial port for real-time display. Reference [ 18 ] describes a digital signal processing system specifically designed for eddy current detection.…”

Section: Introductionmentioning

confidence: 99%

Digital Eddy Current Detection Method Based on High-Speed Sampling with STM32

Cao,

Li,

Yuan

et al. 2024

Micromachines

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The electromagnetic eddy current non-destructive testing system enables the non-destructive analysis of surface defect information on tested materials. Based on the principles of eddy current detection, this paper presents a digital eddy current detection method using high-speed sampling based on STM32. A differential eddy current coil is used as the detection probe, and the combination of a differential bridge and a differential amplifier circuit helps to reduce common-mode noise interference. The detection signal is collected via an STM32-based acquisition circuit and transmitted to the host computer through Ethernet for digital demodulation processing. The host computer performs operations such as smoothing averaging, sinusoidal fitting, and outlier removal to extract the amplitude and phase of the detection signal. The system also visually displays the condition of the tested object’s surface in real time through graphical visualization. Testing showed that this system can operate at frequencies up to 8.84 MHz and clearly identify defects as narrow as 1 mm on the surface of the tested steel plate.

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