光通信技术2026，Vol.50Issue(2)：61-66,6.DOI:10.13921/j.cnki.issn1002-5561.2026.02.010
基于三波段调制技术的在线水分检测系统
On online moisture detection system based on three-band modulation technology
摘要
Abstract
In order to fill the gap in the market for online near-infrared moisture detection using light-emitting diodes(LED)and address the issue of traditional detection being easily affected by material color differences and ambient light interference,an online moisture detection system based on three-band modulation technology is designed.This system employs a combina-tion of 1 450 nm measurement light and 1 200 nm and 1 650 nm dual reference lights from LED sources,utilizing high-precision light intensity and phase modulation techniques.It combines a dual reference wavelength ratio addition algorithm to eliminate the influence of color differences and establishes a calibration model through cubic polynomial fitting.Experimental re-sults show that within the moisture content range of 2%to 20%,the system's average absolute error for detecting materials such as gravel is approximately 0.27%,with an average relative error of about 3.3%,and the limit of detection reaches 0.460 04%.关键词
三波段调制/发光二极管/快速检测/水分测量Key words
three-band modulation/light-emitting diodes/rapid detection/moisture detection分类
信息技术与安全科学引用本文复制引用
杨国强,丁鹤,刘崎,王为迪,曹嘉豪,张龙,王玲..基于三波段调制技术的在线水分检测系统[J].光通信技术,2026,50(2):61-66,6.基金项目
合肥市自然科学基金项目(E33GAGHF)资助 （E33GAGHF）
合肥市众沃仪器有限公司资助. （）
