基于智能手机测大气压强的比较研究

A Comparative Study of Measuring Atmospheric Pressure Based on Smart Phone

由于大气压强不但随高度变化,在同一地点也不是固定不变的,而实际所在位置的大气压强是受温度、湿度和高度等影响,所以非常有必要对大气压强进行测量和相关研究。通过对贵阳、遵义、毕节三地九个区县的当地气压与当地海拔进行测量,根据中国经验大气压强公式和美国校正大气压强公式,分别计算得贵阳、遵义、毕节三地平均大气压强的相对误差为0.55%和1.06%。可见运用智能手机指南针App测量计算当地气压、当地海拔及大气压强相当准确,采用中国经验大气压强公式比美国校正大气压强公式计算大气压强更为准确,对线上线下教学和相关研究具有非常重要的意义。

Atmospheric pressure not only varies with altitude,it is also not fixed even at the same site.The atmospheric pressure at the actual site is subjected to the influence of multiple factors of temperature,moisture and altitude.Therefore,it is necessary to conduct measurement and relevant investigations on atmospheric pressure.In the current manuscript,the atmospheric pressure and local altitude in nine counties attached to Guiyang,Zunyi and Bijie were measured.According to Chinese empirical atmospheric pressure formula and American calibration of atmospheric pressure formula,the relative errors of average atmospheric pressure values corresponding to Guiyang,Zunyi and Bijie were 0.55%and 1.06%.Therefore,it was relatively accurate to measure and calculate the local atmospheric pressure and altitude by adopting smartphone compass App.Compared with American calibration of atmospheric pressure formula,the measurement and calculation results tended to be much more accurate when adopting Chinese empirical atmospheric pressure formula.This will be of great significance for online and offline lesson teaching.