电子器件2018，Vol.41Issue(3)：791-794,4.DOI:10.3969/j.issn.1005-9490.2018.03.047
基于数字锁相技术的近红外水果糖度检测装置设计
Design of Near-Infrared Fruit Sugar Content Detection Device Based on Digital Lock-In Technique
摘要
Abstract
According to the requirement of rapid,nondestructive and continuous measurement of fruit sugar content, we designed nondestructive fruit sugar content detecting device based on near infrared spectroscopy. The device used a semiconductor laser as light source,photocell to receive signal,digital lock-in amplifier to extract fruit signal. And from the comparison of the calibrations,curves fitting and other data processing methods the calculation formula of sugar content of fruit can be obtained. The actual measurement error was less than 3％. The test showed that the disturbance and temperature drift from the common light emitting tube and analogy detection circuit was solved,and the stability of device was improved. The measurement error was consistent with the design requirements.关键词
近红外光谱/水果糖度检测/数字锁相技术/半导体激光器/工作曲线Key words
near infrared spectroscopy/fruit sugar detection/digital phase lock technique/semiconductor laser/working curve分类
机械制造引用本文复制引用
范丛山..基于数字锁相技术的近红外水果糖度检测装置设计[J].电子器件,2018,41(3):791-794,4.基金项目
国家自然科学基金项目( 61573307) （ 61573307）
