An updated and more accurate drip infusion solution monitoring system - biomed 2013.

We have developed a drip infusion solution monitoring system for hospital and care facility use that is much more accurate than our previous reported system. The system consists of two electrodes and an acceleration sensor. The electrodes, which are wrapped around the infusion supply polyvinyl chloride (PVC) tube from the solution bag and the drip chamber, measure the growth and fall of each drop of infusion solution. The drip rate is detected from the fall of each drop. In addition, the acceleration sensor is attached to the outside of the drip chamber and detects the tilt angle of that chamber. The injected infusion solution amount is calculated by the infusion solution quantity per one drop and the drip rate. However, the quantity changes depend on the tilt angle of the drip chamber. The quantity of each drop is then corrected by the tilt angle of the drip chamber.