摘要
水分快速测定是蔬菜种子行业亟待解决的问题。该文在研究蔬菜种子的阻抗—频率特性和阻抗—水分特性的基础上，发现了蔬菜种子在无线电频域内的导电浴盆效应，提出了一种新的蔬菜种子水分快速测定方法，设计了宜于蔬菜种子水分快速检测的撮铲式水分测定仪器。实际应用表明，仪器的测量范围５％～２０％，测量误差≤０．５％，重复性优于０．２％，可满足蔬菜种子的水分检测要求。
It is a key technology to measure the moisture content quickly and accurately for vegetable seed indnstry. The characteristics and relationships between impedance-frequency and impedance-moisture of the vegetable seeds were studied. The electric conductivity bathtub effect was found out throughout the radio frequency range. The paper presented a new method and designed a new instrument to measure moisture content of vegetable seeds. The experimental results showed that the measuring range of the instrument is 5 %～20 %, the accuracy is higher than 0.5 %, and the uniformity is better than 0.2 %. It can meet the demands for measuring moisture content of vegetable seeds.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
1999年第1期90-94,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家火炬计划项目
国家博士后基金资助项目
关键词
蔬菜种子
水分快速测定
阻抗
导电浴盆效应
vegetable seeds, quick measurement of moisture content, impedance, electric conductivity bathtub effect
