Temperature is one of the important parameters in scientific experiment and industry, especially in metallurgy, chemistry, building materials, food, machinery, and oil industry. Temperature will directly affect the quality and service life of many products. With the rapid development of micro-electronic technology and microcomputer, microcomputer measurement and control technology have been developed and applied widely. The technology of how to use microcomputers to observe and control temperature grows up together, and is becoming more and more complete. Its advantages are realized increasingly.
The subject for this graduation design is industrial temperature controller design. Using the temperature sensor to collect temperature, by Analog to Digital collection on the analog signal into the microcontroller can handle digital signals. Through the RS232/RS485 serial switching circuit and the computer communication, realizes the data long-distance transmission, is advantageous for the microcomputer system long-distance observation and control. Using Delphi 7.0 and Microsoft SQL Server2000, the composition temperature monitoring management system management system, carries on the real-time control and the management to the temperature. This design has powerful function, low cost, small components, high precision, reliability, noise-proof, fast implementation, simple, can be used in large area.
