大学物理实验
大學物理實驗
대학물리실험
PHYSICAL EXPERIMENT OF COLLEGE
2011年
4期
55-57
,共3页
单片机%亥姆霍兹线圈%磁感应强度分布%测量装置
單片機%亥姆霍玆線圈%磁感應彊度分佈%測量裝置
단편궤%해모곽자선권%자감응강도분포%측량장치
microcontroller%Helmoholtz coil%magnetic induction intensity%measuring device
介绍了设计制作的基于AVR单片机的亥姆霍兹线圈磁感应强度分布测量装置。单片机统一协调和控制整个系统的工作,步进电机和丝杆控制霍尔元件的移动,A/D芯片将霍尔电压转换为数字信号,通过USB接口传输到上位机,上位机计算磁感应强度,并画出磁感应强度分布曲线。装置工作稳定,测量结果与理论值符合较好,可用于学生实验或演示实验中。
介紹瞭設計製作的基于AVR單片機的亥姆霍玆線圈磁感應彊度分佈測量裝置。單片機統一協調和控製整箇繫統的工作,步進電機和絲桿控製霍爾元件的移動,A/D芯片將霍爾電壓轉換為數字信號,通過USB接口傳輸到上位機,上位機計算磁感應彊度,併畫齣磁感應彊度分佈麯線。裝置工作穩定,測量結果與理論值符閤較好,可用于學生實驗或縯示實驗中。
개소료설계제작적기우AVR단편궤적해모곽자선권자감응강도분포측량장치。단편궤통일협조화공제정개계통적공작,보진전궤화사간공제곽이원건적이동,A/D심편장곽이전압전환위수자신호,통과USB접구전수도상위궤,상위궤계산자감응강도,병화출자감응강도분포곡선。장치공작은정,측량결과여이론치부합교호,가용우학생실험혹연시실험중。
The device for measuring Helmoholtz coil magnetic induction intensity based on AVR microcontroller is introduced.This device works under the control of a microcontroller,the Hall probe is driven by the screw mandrel and a step motor,the Hall voltage is converted to digital signal by an A/D chip and is transmitted to a computer.The magnetic induction intensity is calculated and the distribution curve is drawed by the computer.The device works stably and the result obtained by this device is almost the same compared with that calculated from theoretical formula,so that this device can be used in students＇ physics experiments or demonstration experiments.
