Research On The Detection System Of Temperature And Humidity For Solar Drying Based On Single-chip Microcomputer

The article in view of the present control systems are expensive and inflexible, proposing one kind of composing scheme that is based on the single chip microcomputer and digital temperature and humidity sensor measurement and control system, completed and studied on the design of the hardware circuit and software.The system adopts modular design, including based on single chip machine signal collection part, with PC signal analysis processing and MCU communications with the host part of three major aspects.This article is mainly focused on the following studies:1. System design of Hypogynous machine. The lower computer system based on MCU and sixteen channel digital temperature and humidity sensors completed data acquisition, and the acquisition data of temperature and humidity real-time display in the eight LED digital display. The system designed the keyboard and alarm function, five independent buttons to set threshold temperature and humidity, when the temperature or humidity exceeds set threshold, which will issue a warning signal.2.The system of the upper part of the machine. PC in LabVIEW8.6environment, using a graphical programming language, developed a temperature and humidity data acquisition system of solar energy drying. Realization those functions of the drying process, which are data acquisition, processing, storage, alarm and monitoring.3.Communication system design of MCU and host computer. Using C language to design the serial communication software, and PC using LabVIEW programming language designed the interface of data acquisition, and carried on the simulation test, the realization communication of MCU and PC.4. The test of simulation.When the hardware circuit and software program are debugged, simulating in the Proteus environment. The simulation results show that the detection method is effective for data acquition, at the same time, improving the detection precision, which provide reference for further study of solar drying temperature and humidity detection.