Abstract
In this paper, the temperature control system for project development, both at home and abroad in a large number of references available on the basis of the temperature control provides an overview of the history of the development at home and abroad, as well as the development of the status quo. Monitoring device at home and abroad to introduce the developments and direction of development.
Designed in a PID control for industrial field programmable high-precision intelligent digital control hardware and software structure and its methods. Analysis of the current trend of their background and their development. Analysis of the temperature control program and the overall design. Control law selection, analog output temperature sensor selection, design input and output channels, the choice of chips, structure size and programming. The work of a serial communication interface mechanism, the VB environment on the PC under SCR temperature control system and the serial communication technology, and given its critical processes. And components of the control loop design, the system response speed, super-reduced small.
Also referred to the XMT-7W four intelligent digital regulator, the instrument wiring, operation and so on. In electrical mechanical hardware using a simple and reliable components. Introduced the various parts of the design idea, the principle of the circuit, as well as anti-interference methods, and gives the overall system hardware schematic; In addition, to meet the requirements of system design, the selection of low prices as much as possible, low power consumption of components, to achieve The purpose of reducing system cost
Keywords: Instrumentation; Temperature control; Fuzzy PID; VB; Serial communication