大空间恒温恒湿系统在博物馆中的应用

Huge Spaced Constant Temperature & Humidity System Applied in Museum

1引言 我国南方的环境较为复杂，夏天高温高湿、高温低湿，冬季低温低湿、低温高湿的气候条件均会出现，给精密仪器、特殊原材料、珍贵图书等对温湿度敏感的物质保存带来不利影响。

In view of the limit of the traditional Constant Temperature and Humidity System used in huge space,the paper proposes a Constant Temperature and Humidity System which is based on NI LabVIEW dummy instrument control platform and close loop PID control,used in huge space.Incremental PID algorithm has been used in the system that can improve the applicability to the long time-lapse inertia object;The method of refrigeration unit will be started-up one-by-one and the control tactic will be change by environmental situation which can improve the quality of the system effectively and save energy.The result indicates the system is steady and has high control precision,and could meet the demand of the design requirement.