摘要
利用排水法将金属丝的微小伸长量转化为圆柱棒排开水体积的变化量,采用压力传感器读取增减砝码时的压力值,通过单片机处理数据后在显示屏上自动显示弹性模量的数值,实现金属丝弹性模量的自动化测量.本设计将物理原理和自动化知识相结合,实验操作简单,误差小,能够实现弹性模量的自动化测量.
Automated measurement of wire elastic modulus was realized,which the tiny elongation of the wire was converted into the change of the volume of the drained water on the cylindrical rod based on drainage method,the pressure value was read through a pressure sensor when adding or subtracting weights,and the value of the elastic modulus could be automatically displayed on the display after the data was processed by STM32 microcontroller.The experimental design combined physical principles with automation knowledge,which had the advantages of simple experimental operation,small error,and automatic measurement of elastic modulus.
作者
陈汉忠
李忠遇
王哲涛
程琳
CHEN Han-zhong;LI Zhong-yu;WANG Zhe-tao;CHENG Lin(Qixin College,Zhejiang Sci-Tech University,Hangzhou 310018,China;College of Science,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《物理实验》
2022年第12期35-39,共5页
Physics Experimentation
基金
浙江省自然科学基金项目(No.LQ20E010009)
浙江理工大学线上线下混合式课程建设项目(No.kclxy2021002)
浙江理工大学教改院级Ⅱ类项目(No.Jgxy2021207)。
关键词
弹性模量
排水法
STM32单片机
自动化测量
elastic modulus
drainage method
STM32 microcontroller
automatic measurement
