基于智能手机外设传感器的冷却法测量金属比热容  

Measuring Specific Heat Capacity of Metal by Cooling Method Based on Smartphone Peripheral Sensor

作　　者：周芮 丁益民[1] 陈九江 刘扬雨 杨翔宇 ZHOU Rui;DING Yimin;CHEN Jiujiang;LIU Yangyu;YANG Xiangyu(School of Physics and Electronic Science,Hubei University,Wuhan,Hubei 430062)

机构地区：[1]湖北大学物理与电子科学学院,湖北武汉430062

出　　处：《物理通报》2023年第3期84-87,共4页Physics Bulletin

摘　　要：金属比热容测量的传统方法是冷却法,用此方法通常需要手动控制秒表测量金属的降温时间从而引入较大的误差.为了克服该方法的弊端,采用外设温度传感器通过蓝牙连接智能手机,实时采集金属的降温曲线,实现对降温时间的精确测量.该方法不仅避免了人工控制秒表测量时间的误差,同时还能得到温度随时间下降的连续曲线,方便调入Origin软件对数据进行拟合和计算.实验研究表明:该实验结果与标准值符合得很好.The traditional method of measuring metal specific heat capacity is cooling method,which usually requires manual control of the second meter to measure the cooling time of the metal to introduce large errors.In order to overcome the disadvantages of this method,the peripheral temperature sensor is used to connect the smart phone through Bluetooth,and the cooling curve of the metal is collected in real time to realize the accurate measurement of the cooling time.This method not only avoids the error of manual controlled stopwatch measurement time,but also obtains the continuous curve of temperature decreasing with time,which is convenient to be transferred into Origin software to fit and calculate the data.The experimental study shows that the experimental results are in good agreement with the standard values.

关 键 词：智能手机 外设温度传感器 金属比热容 ORIGIN软件 

分 类 号：O551.3[理学—热学与物质分子运动论] TP212[理学—物理] TG115[自动化与计算机技术—检测技术与自动化装置]