A Self-Powered Wireless Temperature Sensor Platform for Foot Ulceration Monitoring.

Sensors (Basel)

Division of AI Engineering, Sookmyung Women's University, Seoul 04310, Republic of Korea.

Published: October 2024

This work describes a self-powered wireless temperature sensor platform that can be used for foot ulceration monitoring for diabetic patients. The proposed self-powered sensor platform consists of a piezoelectric bimorph, a power conditioning circuit, a temperature sensor readout circuit, and a wireless module. The piezoelectric bimorph mounted inside the shoe effectively converts the foot movement into electric energy that can power the entire sensor platform. Furthermore, a sensor platform was designed, considering the energy requirement of 4.826 mJ for transmitting one data packet of 18 bytes. The self-powered sensor platform prototype was evaluated with five test subjects with different weights and foot shapes; the test results show the subjects had to walk an average of 119.6 s to transmit the first data packet and an additional average of 71.2 s to transmit the subsequent data packet. The temperature sensor showed a resolution of 0.1 °C and a sensitivity of 56.7 mV/°C with a power conditioning circuit efficiency of 74.5%.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11511165PMC
http://dx.doi.org/10.3390/s24206567DOI Listing

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