This design is the design of an electric furnace temperature control system, main with 51 series single a machine for the unit of nucleus heats to the electricity the pro- ceeds the control, realizes wattage rating as a the machine of temperature sterol for, tallest temperature is 800 ℃s, temperature error controlling in 0.5%, making its temperature stabilizing in a certain value. And have the temperature of keyboard entry to constant, LED figures tube display temperature value function.
Calculator with TP89C51 the single a machine is used as the nucleus of that control system, can complete to proceed to collect, handle to the temperature automatical- ly, the buffering, convert, union proceeds the PID the implementation the control to handle and display with the keyboard terminating, including the correction of each pa- rameter value. The adopt- ion vein breadth adjusts the breadth technique, the double face and can control the outputs, working to stabilize, performance firm, that system has soft start, the procedure heats, keyboard entry, display etc. function.
It introduced the hardware fraction in the design, include: The temperature detection, the telephone of temperature isetrol connects the telephone of orifice with the some (SCR triggering cycle, A/ D convert exterior connecting orifice, V/ I convert connecting orifice).Software aspect, TO interrupt serve procedure, segmentation con- trol procedure, give constant computing procedure, sampling procedure,digit wave procedure and PIDs the computing procedure etc.function.
Keyword: single chip microcomputer; electric stove;temperature control system
