农机化研究2016，Vol.38Issue(8)：173-178,6.
基于FDC1004的电容式谷物水分检测仪的设计
Design of a Grain Moisture Detector Based on Dielectric Character
摘要
Abstract
This article aims to present a rapid method of grain moisture measurement based on dielectric character .The capacitor sensor is composed of two metal barrels with the same center but different radiuses , deals with cutting out dis-tractions .As the core of the capacitance measurement circuit , the device of FDC1004 which is a 24-Bit Capacitance-to-Digital Converter , minimizes the peripheral components and increase the accuracy .The system interface through the keys , with the NTC temperature sensor circuit working as temperature compensation and displaying results on the LCD . The MCU of this system is MSP430 F5528 working with low-power .The measurement is powered by a storage battery of 4.2 volt , and the range of measurement is 5%~35%.After the calibration experiment ,the average error was 0.85%, meeting the requirements of the design .关键词
水分检测仪/谷物/介电特性/电容传感器/温度补偿/低功耗Key words
moisture detector/grain/dielectric property/capacitive sensor/temperature compensation/low-power Dis-sipation分类
农业科技引用本文复制引用
徐冬平,张鹏鹏,孙诗裕..基于FDC1004的电容式谷物水分检测仪的设计[J].农机化研究,2016,38(8):173-178,6.基金项目
国家自然科学基金项目( 61350008 ) （ 61350008 ）
国家星火计划项目(2012GA690166) （2012GA690166）
江苏省高校产业化推进项目( JHB2012-55) （ JHB2012-55）
