| In this paper the author will discuss the hardware system and software system design of a new type intellectualized washing stomach machine. It is for the patients which is food -poisoning to wash stomach.The instrument uses pressure sensor to inspect the pressure of washing liquid in and out the stomach, and use flowmeter to inspect flux, at the same time it sends the data to the cpu to compare, adjust and monitor the system. Moreover, we use a PH sensor at the top of the washing liquid pipe to ensure the pipe in the stomach. The main parts of instrument are sensors, control circuits, cpu, minimize pump touching panel and display panelOur design is on the basis of Reviewing the development of the classic stomach pump, and consulting the requests of the medic. The instrument truly realizes automation and makes users feel convenient, furthermore it has more quickly reaction, higher accuracy and much less volume comparing to the same in our country presently. We use the 8051 based microcontroller subsystem to analyze the sampled singals from some sensors, and feedback to control the speed of water. In some parts, the article also discusses the technics of how to dispose small signal and offer various methods to control the circuit noise.At the last of this paper, the author summarizes his work, and some improved suggestions are recommended. |
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