"单片机控制管式电阻炉温度：设计与实现"

This paper focuses on the temperature control of the commonly used tubular resistance furnace in laboratories. In order to achieve temperature control of the resistance furnace, it is necessary to understand the characteristics of the controlled object. Therefore, the entire process, test plan, and treatment method of the temperature characteristic test of the resistance furnace are introduced. Then, based on the characteristics of the resistance furnace and utilizing the existing equipment in the laboratory, a single closed-loop negative feedback control system is proposed using the DDZ-III instrument combination. The temperature of the resistance furnace is controlled by adjusting the proportional coefficient PK, integral coefficient IK, and derivative coefficient DK of the PID controller. The main steps of designing the temperature control system for the tubular resistance furnace are: firstly, studying the temperature characteristics of the tubular resistance furnace. Secondly, applying a certain chip to assemble the hardware circuit. Thirdly, programming in C51 language. The program is able to simulate the furnace temperature, display intermediate variables, and so on. Overall, this design provides a practical solution for controlling the temperature of a tubular resistance furnace using a microcontroller unit. It involves conducting tests to understand the characteristics of the furnace, designing hardware circuits, and programming the microcontroller to achieve the desired temperature control. The PID parameters are tuned accordingly to ensure accurate and stable temperature regulation. This design is a valuable contribution to the field of temperature control systems and can be implemented in various laboratory settings for efficient and precise control of the resistance furnace temperature.