Abstract
“The 100kW microcomputer control monocrystalline silicon heating power source” has utilization the advanced computer control technology that realized the power regulation of low voltage and big electric current power source outputs , and monocrystalline silicon heating power source numerical control . The design includes two major parts, which are hardware design and the software design .The hardware design includes electric design of the temperature setting value examination, thyristor control circuit, CPU systematic, long-distance parts correspondence connection, man-machine conversation part and so on. The software design includes the program flow diagram and the concrete program design.
In the hardware part, the main power source voltage is dropped by transformer firstly, then used the all controls the electric circuit of the three-phase bridge type which is composed by six silicon-controlled; Using the MAX197 realizes that the simulate signal is transformed into the digital signal; the CPU system is consist of AT89C52 and the data-carrier storage 6264; Power control section uses MAX508 to transform the digital quantity into the simulation quantity control triggering electric circuit, and achieve the goal of regulating power; The keyboard and the display circuit use the special-purpose 8279 chips; The communication part electric circuit corresponds with other instrument measuring appliances by the 485 correspondence way that is make up MAX487, and up to the long-distance control.
In the software design part, have designed the master routine, the self-checking procedure, the data acquisition procedure, the data reduction program, the keyboard control interrupt service, the demonstration procedure, power regulation procedure and so on. The software design has used the modularized design method.
Key word: Monocrystalline silicon; Silicon-controlled rectifier; Monolithic integrated circuit; Heats up the power source
