基于智能手机磁性传感器测量重力加速
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摘要
介绍了利用智能手机测量重力加速度的方法.该方法利用智能手机的磁性传感器和Sensor Kinetics App研究了双线摆的运动规律,通过Sensor Kinetics App绘制出"磁场强度-时间"图像,通过该图像计算出振动周期,并使用Origin对振动周期和摆长使用最小二乘法进行线性拟合处理,最终通过拟合直线斜率求出重力加速度.
A new method of measuring gravity acceleration was introduced.Using the magnetic sensor in smart phone and the Sensor Kinetics App,the motion law of the double-line pendulum was studied.The magnetic field intensity vs time curve was drawn by the Sensor Kinetics App,and the vibration period was calculated according to this curve.By using Origin,the vibration period and the pendulum length were fit by least square method,and finally the gravity acceleration was calculated according to the slope of the fitted line.
A new method of measuring gravity acceleration was introduced.Using the magnetic sensor in smart phone and the Sensor Kinetics App,the motion law of the double-line pendulum was studied.The magnetic field intensity vs time curve was drawn by the Sensor Kinetics App,and the vibration period was calculated according to this curve.By using Origin,the vibration period and the pendulum length were fit by least square method,and finally the gravity acceleration was calculated according to the slope of the fitted line.
引文
[1]Temiz B K,Yavuz A.Magnetogate:Using an iPhone magnetometer for measuring kinematic variables[J].Physics Education,2016,51(1):015004．
[2]Wogt P,Kuhn J.Analyzing free fall with a smart phone acceleration sensor[J].Physics Teacher,2012,50(3):182-183．
[3]李锡均，程敏熙，江敏丽．数字传感器新载体---智能手机在物理实验中的应用综述[J]．大学物理，2018,37(2):53-59．
[4]李立，张皓晶，张雄．基于MATLAB编程的刚体转动惯量实验数据处理方法探讨[J]．物理通报，2019,38(6):98-101．
[5]宋伊，丁益民，胡琦珩，等．利用智能手机磁传感器测重力加速度[J]．大学物理实验，2018,31(2):39-41．
[6]赵荣俊，刘应开．用智能手机加速度传感器分析弹簧振动现象[J]．物理教师，2017,38(1):54-58．
[7]林慧金，何京妮，李德安．用双线摆测重力加速度[J]．物理通报，2016(8):89-91．
[8]杨述武．普通物理实验·力学及热学部分[M].3版．北京：高等教育出版社，2000:30-31．
[9]张雄，王黎智，马力，等．物理实验设计与研究[M]．北京：科学出版社，2001:25-27.
[2]Wogt P,Kuhn J.Analyzing free fall with a smart phone acceleration sensor[J].Physics Teacher,2012,50(3):182-183．
[3]李锡均，程敏熙，江敏丽．数字传感器新载体---智能手机在物理实验中的应用综述[J]．大学物理，2018,37(2):53-59．
[4]李立，张皓晶，张雄．基于MATLAB编程的刚体转动惯量实验数据处理方法探讨[J]．物理通报，2019,38(6):98-101．
[5]宋伊，丁益民，胡琦珩，等．利用智能手机磁传感器测重力加速度[J]．大学物理实验，2018,31(2):39-41．
[6]赵荣俊，刘应开．用智能手机加速度传感器分析弹簧振动现象[J]．物理教师，2017,38(1):54-58．
[7]林慧金，何京妮，李德安．用双线摆测重力加速度[J]．物理通报，2016(8):89-91．
[8]杨述武．普通物理实验·力学及热学部分[M].3版．北京：高等教育出版社，2000:30-31．
[9]张雄，王黎智，马力，等．物理实验设计与研究[M]．北京：科学出版社，2001:25-27.