测量谷物流含水率声学方法的研究

An Acoustic Method for Measuring Moisture content of Grain Flowing

研究了一种测量流动谷物含水率的声学方法。通过试验,确定了大豆流声信息与含水率的关系。在200～310Hz频率范围内分析了含水率9％～16％时声压与含水率、流量、声源距离、下落高度诸因素的关系,并建立了数学模型。

This paper studies an acoustic method for measuring moisture contents in grain flowing. The relation between the acoustic information and moisture contents in soybean was established through the experiments. The relations among such factors as acoustic pressure and moisture contents, flow rate, acoustic source, and falling height were analysed within the range of 200 - 310 Hz when moisture content is 9%-16%, and the corresponding mathsmatical models are established.