基于阵列式霍尔元件的界位传感器设计与研究

摘要

In the petrochemical industry various liquids level measurement or interface level measurement is a common measurement, the re/ore sensors based on the principle of measuring is also more di-verseAccording to requirements of different applications,various sensors have their own advantages and disadvantages.By applying switch type Hall Element,arranged according to certain rules,a interface level sensor was designed to measure the liquid level and interface leveLThe sensor mainly composes of two parts :the mobile float with magnet and the fixed Hall Element ermittelt array.The magnet is fixed on the mobile float that moves synchronously with the interface level to allow the magnets moves on the surface of the Hall Element ermittelt array,and the quantities of pulse signal output by the Hall Element ermittelt array is proportional to the magnet displacement distance (the interface level displacement distanceXlt also analyzes the accuracy of this type of sensor measurement with specific processing circuit being given.%在石油化工等领域各种液体的液位或界位测量是一种常见的测量,基于各种测量原理所开发的传感器也比较多样.根据应用场合要求不同,各种传感器又各有优缺点.采用开关型霍尔元件,按照一定的规则进行排列,设计了一种测量液位与界位的传感器.该传感器主要由带磁铁的移动浮子和固定不动的霍尔元件检测阵列两大部分组成,磁铁固定在浮子上,浮子与界位同步移动,使磁铁在霍尔元件检测阵列表面移动,霍尔元件检测阵列输出的脉冲信号数量与磁铁移动距离(界位移动距离)成正比.还分析了这种传感器的测量精度,给出了具体的处理电路.