Design and Implementation of Laboratory Temperature and Humidity Control System Based on Virtual Instrument

The traditional control equipment of laboratory temperature and humidity is take the monolithic integrated circuits as the core,uses the digital tube to show the humidity value and according to different humidity request to set the different adjustment final state by hardware,thus the humidity of the lab spatial will be controlled to the definite value.The virtual instrument technology is used to design a temperature and humidity control system.The LabVIEW and the data acquisition card are used all together to acquire the temperature and humidity signal and output the control signal.The result shows the new system is more vivid and direct-viewing,and its operation is more convenient,the function expansion also more easy.