高精度测量几何量,如角度、长度等的测量结果都是标准环境参数条件下的值,其中的水蒸气压(湿度)要求是1.333KPa,以前采用干球温度计和湿球温度计的差值来对室内水蒸气压的测量,这种测量需要通过查表的方式,而且不能实现连续的自动测量,文中通过建立了一种数学模型,提出了高精度测量中环境参数之一水蒸气压的自动连续的测量方法,为高精度测量提供了可靠快速的保证。 High-precision measurement of geometric quantities, such as angle, length and other measurements are the values ​​of the standard environmental parameters, including water vapor pressure (humidity) requirement is 1.333KPa, previously used dry bulb thermometer and wet bulb thermometer to the difference The indoor water vapor pressure measurement, this measurement needs to look-up the way, and can not achieve continuous automatic measurement. In this paper, through the establishment of a mathematical model, the proposed high-precision measurement of one of the environmental parameters of water vapor pressure automatic The continuous measurement method provides a reliable and fast guarantee for high-precision measurement.