作　　者： (付方圆）; (王威）; (蒋志龙）; (陈秉杰）; (孙维民）;

机构地区： 沈阳工业大学,辽宁沈阳110870

出　　处： 《大学物理实验》 2017年第4期70-73,共4页

摘　　要： 针对热学实验存在数据变化快且不易采集的问题,结合单片机自制了实验装置,用BMP180气压传感器自动测量并实时显示气体压强与温度,用MATLAB进行数据处理与分析。利用该装置实现了非电量物理量的转换和测量,验证了理想气体的等容变化,同时较为精确地测量了气体普适常数R。通过多次实验与分析,证明了本装置具备测量精度高、实用性强、使用方便、成本低等优点,也加强了学生的动手操作能力。 In order to solve the problem that the data change quickly and is not easy to collect in thermal ex - periments,we designed and self-made an experimental device combining Single chip ,used the BMP 180 pneu-matic sensor to measure automatically,displayed currently gas pressure and temperature. Besides ,the data were processed and analyzed by the software MAT LAB . By the device , we achieved the transformation and measure-ment of non-electrical quantities,meanwhile the experimental results show that the ideal-gas isochoric change was verified and the universal gas constant R was measured more precisely by this device .The advantages that the device has precise signal measurement, practic ability ,convenient use and low cost are proved through many experiments and analysis,but also to strengthen the practical ability of students.

关 键 词： 理想气体状态方程 气体普适常数 等容变化 单片机