| In recent year, the infusion surveillance apparatus commonly used in intravenous transfusion. The management of the hospital tends to networked and cyberize.At present, How to use computer and modern control technology to increase the automatization level of medical apparatus and instrument has become the prevalent application.According to the investigation and research, in middle and small hospital usually adopts artificial treatment. The simple wire alarm device applied in these hospital,but the patients still call nursing staff to change bottle or withdraw needle by themselves when infusion finished. The nurse on duty take action by observation the display equipment, it is inconvenience to seriously ill people and easy to cause medical malpractice. Futhermore, the nurse regulate and control the velocity of drops by hand through observation and experience. Obviously, the methods above has inadequate accuracy and waste of times,the velocity of drops too slow or high directly affect the curative effect. In addition, these transfusion apparatus hard to give a alarm when something accident caused by air bubble,fault and blocking .Of course, infusion pump could slove these problem. But the price is so high that the hospital with good benefit can't afford it.According to this situation, straingauge type transducer and photoelectric detector as the front part of measure system, adopts P89C58X2 MCU as microprocessor of slave station, the monitor computer and microprocessor communication with RS485 bus.Monitor the infusion process of patient, dealing with false alarms by accident,give alarm sounds at the end of transfusion. In addition, the communication network composed of RS485 bus and repeater. one master station control multi-slave station, transfer data between master and slave.The medical monitoring system resolve present defects of conventional infusion system, had a good result in clinical application. Promote the informationization and int ellectualization construction in hospital. |
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