Research on Tree Ring Micro-Destructive Detection Technology Based on Digital Micro-Drilling Resistance Method
نویسندگان
چکیده
Micro-drilling resistance method is a widely used tree ring micro-destructive detection technology. To solve the problem that signal of analog micro-drilling has excessive noise interference and cannot intuitively identify information, this research proposes digital provides recommended hardware implementation. The adopts photoelectric encoder instead ADC as sampling module. Through theoretical analysis DC motor characteristic, PWM closed-loop speed control, principle given. Additionally, experimental equipment can complete simultaneously designed to carry out comparative experiments. results show that: (1) have better-quality which rings. (2) average correlation coefficient reaches 0.9365 between method. (3) Signal-to-Noise Ratio (SNR) 39.0145 dB, 19.2590 dB higher than energy in result only 1.27% In summary, implementation correctly reflect information significantly improve quality This helping identification accuracy technology, develop application technology high-precision field.
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ژورنال
عنوان ژورنال: Forests
سال: 2022
ISSN: ['1999-4907']
DOI: https://doi.org/10.3390/f13071139