Development of textile′s dynamic heat-moisture measuring instrument based on NI LabVIEW

Aiming at objective evaluation on textile′s dynamic heat-moisture comfort properties,this paper developed a textile′s dynamic heat-moisture measuring instrument based on NI LabVIEW,which simulated sweating skin-microclimate-fabric.By testing the real time changes of temperature and relative humidity in inner and outer surfaces of fabric when it was covered with simulated sweating skin by LabVIEW virtual instrument software program,the instrument made evaluation of textile′s dynamic heat-moisture comfort properties.And it was proved to have good controlling precision and repeat accuracy by lots of experiments.This instrument was used to study four kinds of fabrics with different fibers by analyzing their temperature and relative humidity variation curves in microclimate, and temperature and relative humidity difference curves of inner and outer surfaces of fabrics and make evaluation of the four fabrics′ dynamic heat-moisture comfort properties.