【摘要】 介绍我们新开发的一个综合性实验,它主要包括拉力传感器、由LM331组成的V/F和F/V变换电路以及红外发射和接收装置等,以实现对弹簧振子加速度的红外遥测。利用计算机USB数据采集器进行数据采集和处理,包括计算弹簧振子的速度和位移、系统的弹性势能、重力势能、动能和总机械能,并绘制机械能变化曲线,由此验证了弹簧振子系统的机械能守恒。本实验项目在提高学生学习的主动性和创新能力方面取得了较好的效果。更多还原

【Abstract】 This paper presented a comprehensive physics experiment for measuring the acceleration of a spring vibrator by infrared telemetering method.It consists mainly of a force sensor,V/F and F/V converters,a infrared transmitter and receiver.A computer and an USB data acquisition system are used for data collection and the calculation of velocity and displacement of a spring vibrator.The elastic potential energy,gravatitional potential energy,kinetic energy and the total mechanical energy are calculated and shown on the computer screen in curves,and the result proves the mechanical energy conservation of a spring vibrator system.The teaching practice shows that this experiment is good for increasing students’ initiative and creative ability.更多还原