(All-in-One) Power Supply System for Mobile and Network-Wired Raspberry Pi-Based Internet of Things Applications

Abstract

Internet of Things (IoT) applications based on the single-board computer Raspberry Pi depend on reliable and sufficiently powerful energy systems to allow system diversity, flexibility, and available computing power. On this account, we developed an all-in-one module to simplify both the autonomous and network-wired power supply of Raspberry Pi-based systems. The module generates a stable voltage of 5.1 VDC with an available maximum current of 3 A to power a single Raspberry Pi model 3B+ or 4 and furthermore provides an additional power source of 3 VDC–12 VDC at a maximum of 3 A for use by arbitrary peripherals. To accommodate different use cases, the system has various energy supply options such as a 4S lithium polymer (LiPo) battery for autonomous operation, including a battery management and charging solution, as well as wire-based options, such as USB-C with USB Power Delivery (USB-PD) or Power over Ethernet (PoE+) via an additional module.

Enhancing Security Mechanisms for IoT-Fog Networks

“…The second essential component is the Raspberry Pi 4 processing unit, equipped with 8 GB of RAM, a robust microprocessor, and an open-source Debian-based operating system. This unit houses our classification program and an Application Programming Interface (API) for seamless communication with the Fog computing node [22]- [24]. Our significant scientific contribution lies in the meticulous security measures implemented to safeguard the received neural network weights from the Fog computing node (see Fig.…”