Autonomous Low Power Energy Management Bridge for Industry IoT Application

Abstract

This work reported the autonomous battery-less power management system for the IoT (Internet of Things) application that is based on thermoelectrical energy harvesting and power management IC (PMIC). In the proposed design for targeting IoT, the bridge part that transmits the signal from the local area network e.g., Wi-Fi or BLE (Bluetooth <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> low energy) to the long-range protocol is essential to optimization. It is focused on the collaboration with the LPWA (Low Power Wide Area) network and BLE protocol to realize them, the programmed system controls the power management system. Lastly, the design indicated the possibility to utilize the autonomous system in IoT applications as a monitoring system in the industry with TEG (Thermoelectric Generator) harvesting. Especially, the temperature difference of about 8.6 degrees Celsius could drive the IoT utility with charging time every 3 hours 40 minutes when hot-starting from capacitance energy that should be semi-permanently utilized are evaluated. The work described that it could be effectively utilized to expand the IoT applications as close to easily and at a low cost.