CAJ | 학술논문

声学检测技术以其价格低廉、信号量丰富等优势广泛应用与农产品无损检测。但由于其抗干扰能力较差,容易引入诸多干扰信息,影响农产品声学检测结果。因此,本文提出了适用于农产品声学特性检测系统的信号调理电路,通过差分电路、音频放大电路和带通滤波器等硬件电路提高声学信号的信噪比,简化后续数字信号处理,提高检测效果。
성학검측기술이기개격저렴、신호량봉부등우세엄범응용여농산품무손검측。단유우기항간우능력교차,용역인입제다간우신식,영향농산품성학검측결과。인차,본문제출료괄용우농산품성학특성검측계통적신호조리전로,통과차분전로、음빈방대전로화대통려파기등경건전로제고성학신호적신조비,간화후속수자신호처리,제고검측효과。
Compared with other non-destructive determinative technologies,acoustic detection technology has been widely applied in agricultural products for that of low price and rich information.However,acquisition of agricultural products' acoustic signal is easy to be mixed with a lot of interference information which affects the subsequent process.So,this article provides a determinative system for agricultural products based on the acoustic resonance,which increased the signal to noise ratio by design of differential circuit,audio amplifier and bandpass filters,which simplify the digital signal process and enhance the detection efficiency.