The Remote Monitor System Of Infusion Based On Low Power Line Carrier

Infusion is a usual medical treatment in hospital, it is an important way to let the patient take medicine and supplement body fluid and nutrition. Infusion speed is an important parameter in the infusion process. Usually we setup the infusion speed based on the age of the patient, the state of the illness, the sort of the medicine, and so on. Today the infusion speed is controlled by the nurses through modulate the pulley in the infusion equipment in almost all kinds of hospitals in our country, but the infusion speed controlled manually is not accurate and convenient, this should reduce the anticipative result of the treatment. It is also difficult to find out the infusion abnormity and medicine out in time. Those factors are hidden troubles to the Patient's life and Property, and they are also the important source to enhance the medical workers' workload and stress.This article discusses the merits, demerits, and actuality of low-voltage power line carrier communication, and compares all kinds of modulating techniques of low-voltage power line carrier communication mainly being used at present. After expounding the fundamental of spread spectrum modulation, a long-distance supervising system of transfusion is used as an example to present the method of developing the digital communication system based on low-voltage power line carrier in details, including hardware circuits and system software. The hardware part is composed of control center using IT800D as the core and realizing circuits of the sampler. The software part has the control center and the sampler.Through the experiments and research that have been done in this program, the IT800D chip is applied to build a communication network based on low-voltage power line carrier, and supervising the water level of transfusion in long-distance is achieved. It is concluded that the spread spectrum modulation has better adaptation and is more advanced under the condition in existence. And the low-voltage power line carrier communication has a bright future.