Temperature Control System Of Endometrium Thermotherapy Appearance Based On Fuzzy Control Method

Based on operation to remove endometrium, an accurate temperature control water tank had been designed. According to the" fuzzy control theory, a better control temperature tactics adopting fuzzy control technology had been studied. Temperature measure adopted DS18B20 digital temperature sensor of interface Dallas semiconductor of U. S. A., the first one which supported " first line bus" in the world, which directly output digital signals without needing succeeding signal enlargement and analog-to-digital conversion and which peripheral circuit was simple with low costs. Single bus interfaces, only one stick of signal line being connected with one-chip computer as form bus and everyone had its own and only 64 sequence numbers to store in its inside ROM memory , so a number of DS18B20 could be hung and met on one stick of signal line to benefit multipoint measurement and easy expansion . Data signal was sent to one-chip computer 89C51 to be processed and the one-chip computer could send out the controlling signal in time according to the information gotten. The circuits this system needed to control included LED show circuit, annunciator circuit and the circuit to control microwave machine. The microwave machine could regulate its power according to the signal sent by one-chip computer. This design also gave the hardware circuit of the thermostat water tank and the fuzzy algorithms which accorded to the control demands."...