基于STM32的木材中金属夹杂物检测系统研究

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中图分类号：S777;TP391.4 文献标识码：A 文章编号：2095-2953（2026）01-0062-05

Abstract：In the wood processing industry，raw materialsare often mixed with foreign objects like iron nailsand metalshavings.If notdetected inatimely manner，these impuritieswillnotonlyseverelywear precision cuting tools and equipment but also trigger mechanical failures or even full-line shutdown，resulting in economic loses.To address these issues，an on-line metal impurity detection system suitable for wood processng was developed.Based on the principle of eddycurrent induction，the detection probe adopts a symmetric differential coil layout，and the induction signalsareprocessdbyadiffrentialamplification circuit，ultimatelyoutputingavoltage signal thathas a strictcorresponding relationship with themagnetic flux disturbed by metal impurities.Through the optimizationof system parameters and analysis of signalcharacteristics，the sensitivityand accuracyof metal identification have been significantly improved.This system provides technical support for quality control in wood processing and has certain engineering application value.

Key words：metal detection;alternating electromagnetic field;balanced coil；STM32；induced electromotive force

我国作为木材消费大国，木材加工质量一直备受关注[1]。（剩余5695字）