Design of Interactive Negative Pressure Analyzer Based on Micro-controller Unit

This paper presents an interactive negative pressure analyzer design method based on micro-controller unit(MCU).The negative pressure analyzer can accurately measure the pressure of air in the pipe,and display it in real time.Aiming at special principle of the pressure analyzer,a FUZZY-PID complex controller is introduced to adjust the pressure automatically.When the pressure of air exceeds pre-set upper or lower limit,the alarm system might alter people instantly.The serial communication between PC and microcontroller is realized by the hardware of negative pressure analyzer.