互感式磁性物含量测量  

Mutul Inductive Measurement of Magnetic Medium Density

作　　者：邱志祺[1] 孙铁强[2] 

机构地区：[1]河北联合大学电气工程学院,河北唐山063009 [2]河北联合大学信息工程学院,河北唐山063009

出　　处：《中国科技信息》2013年第12期52-53,共2页China Science and Technology Information

摘　　要：磁性物含量是重介选煤自控系统的重要参数,本文介绍一种以微芯单片机为核心的新型互感式磁含量计原理,参数的测量采用由漆包线密绕的互感式传感器,施加正弦信号作为激励信号,利用测量次级正弦信号幅值的方法测量线圈的互感量,以达到测量管道内磁性物含量的目的。此方案较电感式磁性物含量测量更加简单、可靠,使磁性物含量计的温度漂移得以克服。The magnetic medium density is very useful for the dense medium coal washing process automation. A method of mutual inductive magnetic medium density measurement which takes Microchip microcontroller as a core is described. The mutual inductive sensor of solenoid coil made by winding enamel-insulated wire on a pipe is used. The exciting signal is sinusoidal wave current. The mutual inductance of the sensor can be masured by measuring the amplitude of the sinusoidal voltage of the secondary coil, and then the magnetic medium density in pipe can be measured. This mathod is simple and reliable compared with the inductive magnetic medium density measurement, and eliminates the temperature drift magnetic medium density meter.

关 键 词：磁性物 互感式 参数测量 

分 类 号：TD94[矿业工程—选矿]