Abstract
Temperature detection is an important component of the modern detection technology. In the general industrial scene, PLC(Programmable Logic Controller) is often used the control core of system. The temperature variable is collected by the temperature sensor, and then sent to the special function modules of PLC-- temperature module, which is made up with transmitter and AD conversion, so the process of temperature controlling can be implemented. However, this way of controlling is not intuitive. What’s more, it is not convenience to find matter when something occurs.
This design is a kind of software which is based on PLC. PC gets the control of PLC by serial communication, so that it can implement the control of the whole system.
I design a intuitive and friendly interface and apply it to the users. Real-time monitoring can be realized, and users can operate the system very easily.
In this design, I explain the hardware circuit, and the internal structure of PLC-FP∑ of Panasonic and the analog input module, and serial communication protocol, and the principle of the fuzzy control, and as well as the composing of the whole program.
Keywords: temperature control, VC++ ,fuzzy control