PowerFlux Technical Architecture

From Sensor Signal to Maintenance Insight

PowerFlux is designed as an end-to-end industrial monitoring stack. The edge device collects machine signals, local Linux services prepare and forward telemetry, and the server side turns measurements into dashboards, reports and anomaly-focused maintenance context.

01 Edge device

02 Yocto Linux

03 Secure API

04 Maintenance insight

System Layers

Hardware Interface

PF Box combines a Raspberry Pi 4 edge computer with sensor buses for temperature, humidity, vibration and acoustic experiments.

Embedded Linux

A custom Yocto layer builds a read-only-rootfs image with systemd services, persistent data layout and Raspberry Pi specific kernel support.

Telemetry Runtime

PF Logger runs as a dedicated service, keeps runtime state under /data, stores local readings and forwards device data to the server API.

Web and Analytics

The server stack stores measurements, visualizes sensor history, exports CSV reports and runs anomaly-oriented analysis for maintenance workflows.

Engineering Highlights

Repeatable image builds: Yocto, kas and small build scripts keep image, SDK and release artifact generation explicit.
OTA-ready structure: The image is prepared for RAUC bundle updates and an A/B style root filesystem workflow.
Provisioning boundary: Device identity, API token, VPN profile and SSH keys live outside Git and are injected through controlled runtime or build-time paths.
Security baseline: The target starts with disabled SSH passwords, no root SSH login, firewall hardening and service isolation for telemetry.
Persistent data model: Mutable configuration, logs, SSH host keys and telemetry state are isolated under /data so updates do not overwrite device identity.

Data Flow

Sensors capture machine condition signals at the edge.

PF Logger normalizes readings and keeps local runtime state.

Authenticated device APIs receive telemetry per registered machine.

Dashboards, reports and anomaly views help maintenance teams inspect trends.

What Stays Private

This page describes the engineering shape of PowerFlux without exposing production secrets, private keys, device tokens, full deployment parameters or low-level implementation details. Those belong in controlled provisioning and operations documentation.