大学物理 ›› 2026, Vol. 45 ›› Issue (08): 90-.doi: 10.16854/j.cnki.1000-0712.250291

• 大学生园地 • 上一篇    下一篇

基于视觉暂留效应的重力加速度测量系统研究

金睿鳕,常露情,王海轮,梁浩琳,段语晗,刘向,彭小牛    

  1. 湖北大学 物理学院,湖北 武汉430062
  • 收稿日期:2025-10-26 接受日期:2025-12-15 出版日期:2026-10-10 发布日期:2026-10-20
  • 作者简介:金睿鳕(2004—),女,浙江镇海人,湖北大学2022级本科生


  • 基金资助:
    湖北省教育厅科学技术研究计划重点项(D20221005)

Research on a gravity acceleration measurement system based on the visual persistence effect

JIN Ruixue, CHANG Luqing, WANG Hailun, LIANG Haolin,DUAN Yuhan, LIU Xiang, PENG Xiaoniu   

  1. College of Physics, Hubei University, Wuhan, Hubei 430062, China
  • Received:2025-10-26 Accepted:2025-12-15 Online:2026-10-10 Published:2026-10-20

摘要: 本研究利用视觉暂留效应结合数字分析技术,设计了一套新型重力加速度测量系统.该系统使用信号发生器精准控制照明系统的闪烁频率、占空比,配合具有稳定出水速度的蠕动泵装置,实现悬浮水滴运动轨迹的可视化成像,并结合最小二乘法与Tracker软件处理实验数据,测量重力加速度相对误差为0.39%.本装置结构简单、操作便捷、现象直观易于观察且过程生动有趣,能够清晰呈现自由落体运动过程,适合推广至中学物理教学创新、科技馆互动演示等应用场景.


关键词: 视觉暂留, 重力加速度, 蠕动泵, 频闪控制, 最小二乘法

Abstract:

The study utilized the visual persistence effect in combination with digital analysis technology to design a new type of gravity acceleration measurement system. The system precisely controls the flashing frequency and duty cycle of the lighting system using a signal generator, and is combined with a peristaltic pump device with a stable water discharge rate to achieve visual imaging of the trajectory of suspended water droplets. It also processes the experimental data using the least squares method and Tracker software, with a relative error of gravity acceleration measurement of 0.36%. The device has a simple structure, is easy to operate, presents intuitive phenomena that are easy to observe, and has a lively and interesting process. It can clearly show the process of free fall motion and is suitable for promotion in innovative middle school physics teaching, interactive demonstrations in science museums, and other application scenarios.

Key words: persistence of vision, gravitational acceleration, peristaltic pump, strobe control, least square method