基于单片机和液滴法的重力加速度测定器  

Acceleration Measuring Machine Based on SCM and Drop Method

作　　者：魏华[1] 袁广宇[1] 陈得宝[1] 

机构地区：[1]淮北师范大学物理与电子信息学院,安徽淮北235000

出　　处：《吉林师范大学学报（自然科学版）》2013年第4期114-116,共3页Journal of Jilin Normal University:Natural Science Edition

基　　金：安徽省质量工程项目(2012zy038)

摘　　要：为提高重力加速度测量的准确度、简化加速度测量装置,设计了一种基于单片机和液滴法测量重力加速度测定器.本系统利用电路将液滴的起始和结束位置转化成电脉冲,液滴的导电性不会影响实验结果,并且普通自然水或纯净水等液体都可以进行实验.利用单片机的定时器测量液滴运动的时间,进而自动计算出重力加速度,在显示屏上同时给出了液滴的运动时间、运动距离和加速度值,便于对实验结果的分析.To improve the measuring accuracy and simply the acceleration measuring device, an acceleration measuring machine based on single-chip microcomputer and drop method is designed. In the system, the start and end position is converted as electronic pulse, the results of the experiment is not affected by electric conductivity of drop, tap water, pure water or other drop can also utilized in the experiment. The moving time of drop is measured by the timer of SCM, and the acceleration can be calculated automatically, the moving time and the distance of drops are also displayed on the screen, the results of the experiment are easy to be analyzed.

关 键 词：加速度 单片机 液滴法 定时器 

分 类 号：O314[理学—一般力学与力学基础] G633.7[理学—力学]