PitPulse Edge — Haul-Fleet Fault Triage

A single unplanned haul-truck failure can strand a loaded truck on a ramp and cost hours of ore movement, yet no one can watch dozens of signals across a whole fleet at once. PitPulse Edge is an edge-style triage board for a mine maintenance lead: a synthetic telemetry simulator streams six haul trucks over a 480-minute shift (temperatures, vibration, tyre pressure, hydraulic pressure, fuel and cycle times) with ground-truth fault injection, and lightweight CPU-only models that could run on a site gateway — per-signal calibrated z-scores plus an IsolationForest — score every truck every minute from 0 to 100. Each alert explains itself in plain language from the actual signal contributions (for example, vibration 6.0 sigma above normal), never from a free-text model, and a human dispatcher approves or dismisses a drafted work order (inspect or replace, urgency, parts hint) written to an append-only, hash-chained decision log. In the default synthetic bearing-overheat run the fault starts at minute 240, PitPulse first alerts at minute 267, the failure threshold is crossed at minute 345 — a 78-minute lead — with a 0.0 false-alarm rate on healthy trucks and an estimated $38,250 of avoided downtime from the shown formula (6.0h unplanned minus 1.5h planned, at an editable $8,500/hour). All data is synthetic with published generator assumptions; no real mine is claimed. The board replays the whole shift, ranks alerts by risk, and produces the shift report, so the value is measurable without sending raw telemetry to a cloud LLM. Buyer: the maintenance lead at a miner or mining contractor, priced per site gateway. Public MIT repo, 36 pytest tests, Streamlit demo.