# Sentinel AI

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Franco Jacquet](https://cerebralvalley.ai/u/x0rus)
- **GitHub:** https://github.com/FrancoJacquet/sentinel-pre-start
- **Demo video:** https://youtu.be/TcWZ4PX6Rgw
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3458

People still die because someone restored power while another person was still working on the machine. The person at the switch often cannot see the person at risk.

Sentinel is a 3D digital twin of a factory bay: a technician services an overhead crane while an operator stands at the main disconnect, with no line of sight. When the operator presses ENERGIZE, a virtual camera captures the work zone, Meta's SAM 3.1 segments any person in the rendered pixels, a zone rule checks whether they are inside, and a deterministic virtual PLC refuses to energize if someone is there — or if the system is not sure (camera off, model error, stale result: unknown is never safe).

When a start is blocked, the technician's simulated watch gets a warning at once, and Meta's Muse Spark then writes the alert in plain words and explains to the operator why power stayed off. Spark explains; it never decides.

Live results: SAM matched the simulator's ground truth on 19 of 19 real requests.

This is a simulation, not a safety system: real interlocks are always independent of AI.

## More from Meta Global AI Developer Hackathon

- [ASCII](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3455)
- [Amos Kanyanta](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3456)
- [Nearhand](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3457)
- [Taskforce 141](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3459)
- [Mihiretu (Didymos) Likassa](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3460)
- [TradePulse AI](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3461)

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