粮食水分分布对高频电感的影响研究

该文研究了在利用高周波线圈的电磁感应检测粮食水分时，粮食颗粒内部发生水分移动和水分偏在的情况下，测定所受到的影响。与电阻或电容水分测定法等无损水分检测法一样，干燥后的非安定水分状态下，水分由粮食颗粒内部向外部移动，使测定值与恒温干燥法测得的水分存在较大的差异，需要对测定结果进行补正。而采用喷雾法增加粮食外侧的自由水会使测定值急剧增加。但是，高水分粮食在容器内的偏在对测定没有影响。

Effects of moisture conditions of grain on inductance of high frequency coil

Moisture moving in grain kernel and partial distribution of high moisture grain in the coil affected measured value of moisture content of grain by using high frequency coil. In the case of instability state after dried by ventilation,while moisture moved from inside to outside of the kernel, moisture content of grain measured by using high frequency coil system was larger than the value measured by using heated drying method. On the surface of grain kernel, if the free water was increased by spraying, measured moisture contents increased much with the increasing of quantity of spraying water. It is found that even if high moisture grain was unbalancedly loaded in the coil, measured moisture content was not affected.