Research of monitoring transfusion system for medical use

A transfusion system faced to hospital is presented. The system has real-time monitoring and alarming (when there exit abnormal instance or the transfusion is completed) functions, which well settle the inconvenience of venous transfusion in clinic, and increase the security and efficiency. The Photoelectric sensor technology and signal processing technology are applied to acquire the reliable detection of the transfusion. And microcontroller (MCU) and digital display technology are employed to count, display and monitor the quantity and velocity of the liquid, and alarm when there has no liquid.; we use RS-232 serial communication to realize the real-time control and management from main station to child stations. At last, the authors point out system´s flaws and the main work in the following research.