Multi-parameter Measurement Method for Variable Air Volume Air-conditioning System

Temperature and humidity in indoor environment are two main parameters of an air-conditioning system,for which the accurate measurement is a basis of designing the type of the VAV air-conditioning vent.A multi-point measurement system composed of singal chip microcontroller AT89C52,single-bus category digital sensor DS18B20 and temperature / humidity sensor SHT11 is introduced.This system includes a rectangle temperature detecting network with 28 DS18B20 sensors and a temperature / humidity measurement section with 3 SHT11 sensors,which efficiently improve the measurement and control ability of this system,and offer a research platform for designing the vents of VAV air-conditioning systems.