【摘要】 基于霍尔效应的霍尔传感器,在不同磁场强度与产生的霍尔电压与磁场强度成正比。根据霍尔效应原理设计测量探头,用于测量金属卤化物灯电弧管石英玻璃泡壳壁厚。在泡壳内部放置磁性钢球,磁性钢球离探头距离为泡壳的壁厚,磁性钢球的磁场使霍尔传感器产生霍尔电压,二者数值成正比,利用单片机、A/D转换器、放大器等构成硬件电路对霍尔电压进行采集、数据处理、数值转换,用液晶屏显示泡壳壁厚值。更多还原

【Abstract】 The hall voltage produced in hall sensor based on Hall Effect,is in direct proportional to the magnetic field intensity.A measuring probe designed according to Hall Effect principle is used to measure the thickness of metal halide lamp arc tube quartz bulb shell.It is required to place magnetic steel ball in the bulb;the distance between the magnetic steel ball and probe is the thickness of bulb shell,which is in direct proportional to hall voltage produced by hall sensor in the magnetic field of magnetic steel ball.It is required to make use of MCU,A/D converter,amplifier and others to constitute a hardware circuit to conduct collecting,data processing and value converting for hall voltage and use LCD to show the thickness value of bulb shell.更多还原