Abstract
AbstractThe monitoring of saline levels during medication has become a tedious process for practitioners. Regardless of the infusion bag size, real‐time wireless monitoring is essential in the healthcare medical sector. This paper demonstrates a size‐independent infusion bag liquid level monitoring system based on highly stretchable (>100% tensile strain) hydrogel‐based electrodes. The sensor uses coplanar capacitive electrodes to sense changes in the liquid level and is integrated with a flexible printed circuit board (FPCB) to monitor the liquid level in real‐time wirelessly. Regardless of the sensor's extensibility, the linear relationship between the ∆C/C0 and the drop in liquid level, and the difference in the ∆C/C0 values corresponding to liquid fill and empty states remained approximately the same. The sensor integrated with an FPCB delivered continuous liquid‐level data to a mobile device in real‐time without any obvious error.
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