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Abstract
Urinary tract infection (UTI) is one of the most common infections in humans. UTI is easily treatable using antibiotics if identified in early stage. However, without early identification and treatment, UTI can be a major source of serious complications in geriatric patients, in particular, those suffering from neurodegenerative diseases. Also, for infants who have difficulty in describing their symptoms, UTI may lead to serious development of the disease making early identification of UTI crucial. In this project, we present a diaper- embedded, wireless, self-powered, and autonomous UTI monitoring sensor module that allows an early detection of UTI with minimal effort. The sensor module consists of a paper-based colorimetric nitrite sensor, urine-activated batteries, a boost dc–dc converter, a low-power sensor interface utilizing pulse width modulation, and a Wi-Fi low energy module for wireless transmission .The proposed sensor module achieves a sensitivity of 1.35 ms/(mg/L)and a detection limit of 4 mg/L for nitrite.