用摄像头实时测摆动，帮学生学物理实验。
Pendulum Tracker -- SimuFísica: A Web-based Tool for Real-time Measurement of Oscillatory Motion
- 用浏览器摄像头自动追踪摆锤位置
- 测出周期与阻尼，结果符合理论预测
- 适合物理教学，可导出数据做分析
我们提出Pendulum Tracker，一个基于计算机视觉的网页应用，可实时测量物理摆的振荡运动。集成于教育平台SimuFísica，系统利用OpenCV.js库，在电脑、平板和手机上直接运行。通过设备摄像头自动检测摆锤位置，实时显示角度-时间图，并估算振荡周期。实验案例表明，该系统能有效测量周期、确定重力加速度，并分析阻尼振荡。结果与理论预测高度一致，验证了系统的准确性及其在教育场景中的适用性。界面友好，支持原始数据导出，是实验物理教学的多功能工具。
原文摘要 · Abstract (English)
We present Pendulum Tracker, a computer vision-based application that enables real-time measurement of the oscillatory motion of a physical pendulum. Integrated into the educational platform SimuFísica, the system uses the OpenCV.js library and runs directly in the browser, working on computers, tablets, and smartphones. The application automatically detects the pendulum's position via the device's camera, displaying in real time the angle-versus-time graph and estimates of the oscillation period. Experimental case studies demonstrate its effectiveness in measuring the period, determining gravitational acceleration, and analyzing damped oscillations. The results show excellent agreement with theoretical predictions, confirming the system's accuracy and its applicability in educational contexts. The accessible interface and the ability to export raw data make Pendulum Tracker a versatile tool for experimental physics teaching.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品；中文卡片由大模型生成，请以原文为准。