Design of Robust Intravenous Infusion Monitoring Device

In this paper, a design method of an infusion monitoring device using a 5kg load cell was proposed, and a material object with a monitoring accuracy of 0.1g was fabricated by this method. Usually, the use of load cells to monitor the infusion situation will face a variety of external disturbances. This paper ensured that the correct data was filtered out via the range analysis of the measured values and software filtering, and summed up all kinds of errors that may occur, which made the device have the ability to judge varieties of errors. Besides, the selection of different thresholds in the range was explored so that the device can dynamically adjust the threshold according to different drug solutions, different rate requirements, and different infusion sets. Furthermore, this paper proposed the equation and method of temperature correction. The results show that the proposed design method made the device more practical.