Abstract

    In the control device field, temperature detection and control is very important. temperature measurement and control device in industrial and agricultural production, scientific research and people's life, has been widely used. Therefore, the temperature sensor used in the first batch of sensors. At present, the rapid development of the direction of the temperature sensor from analog to digital integration. This paper outlines the development of temperature controller and the basic principle, introduces the principle and characteristic, in the full analysis of the advantages and disadvantages of various temperature sensors on the part of the circuit design, the temperature of the collection, and discusses some main parameters of the temperature measuring system. At the same time, based on the temperature control device function, the overall composition of the system. The temperature acquisition, receiving, processing, demonstrates the overall design scheme of display, further introduces the application of Microcomputer in the system, analysis of the various parts of the system hardware and software. This paper introduces the 89C52 microcontroller as the core control device of air temperature. Air temperature control device design principle, is composed of a single chip computer to complete the data acquisition, processing, display. The system under normal conditions of temperature measurement, determine whether meet the set requirements, the use of microcomputer control of air conditioning system so as to achieve the desired temperature instruction.