Automatic measurement of air-pressure sensor based on two-pressure control instrument  

作　　者：丁红英 赵湛 轩运动 方震 

机构地区：[1]The State Key Laboratory of Technology,Institute of Electronics [2]Graduate University,Chinese Academy of Sciences

出　　处：《Journal of Measurement Science and Instrumentation》2013年第1期6-9,共4页测试科学与仪器（英文版）

基　　金：National Basic Research Program of China(No.2011CB302104);Special Fund for Public Welfare(No.GYHY201004004)

摘　　要：To measure the performance of high precision air-pressure sensors in below normal pressure,an automatic measurement instrument has been designed and implemented.It can simulate environment of low pressure from 300hPa to 1 000hPa with high accuracy by proportional-integral-derivative(PID)control quickly,and it can also generate various relative humidity by two-pressure control.The results show that this instrument can reach controlled pressure quickly.And it works well with the minimum average pressure difference,and the fluctuation is±0.02hPa at 500hPa.And it can keep in a stable status for a long time.It works well in performance testing of pressure sensors.The structure of the system is simple,takes small investment,and can be operated conveniently.To measure the performance of high precision air-pressure sensors in below normal pressure, an automatic measure- ment instrument has been designed and implemented. It can simulate environment of low pressure from 300 hPa to 1 000 hPa with high accuracy by proportional-integral-derivative （PID） control quickly, and it can also generate various relative humid- ity by two-pressure control. The results show that this instrument can reach controlled pressure quickly. And it works well with the minimum average pressure difference, and the fluctuation is ＋ 0.02 hPa at 500 hPa. And it can keep in a stable sta- tus for a long time. It works well in performance testing of pressure sensors. The structure of the system is simple, takes small investment , and can be operated conveniently.

关 键 词：automatic measurement two-pressure pressure sensor proportional integral derivative(PID)control 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]