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Safety Event Integrator (SEI)#

SEI is a core component of the Halos Outside-In Safety AI Agent. It fuses reported events, prioritizes them by severity, and forwards consolidated results to SDM for control decisions.

Sub-components#

Communication Interface (legacy: PSSComm) — Manages IPC between SEI clients, SDM, and Safety Black Box.
Core Processing Unit (legacy: PSSCore) — Collates event parameters from SIPP clients and evaluates them against defined safety conditions. Also consumes per-sensor trust reports from SAIM and pipeline trust reports from PCM to qualify input integrity, and propagates the resulting health state to SDM so that downstream decisions can react to compromised sensors or a compromised perception pipeline.

Fusion operations#

SEI Fusion Operations#
Operation	Description
Temporal	Correlates events from multiple pipelines at different time points (same real-world occurrence).
Spatial	Correlates events from multiple sensors observing the same area.
Attribute	Combines event attributes across sources for a balanced representation.
Prioritized delivery	Not part of fusion itself. Fusion orders candidates by timestamp; the send path then draws from separate critical and operational queues, so critical events reach the SDM with minimal latency.

Output: SEI forwards fused events to SDM with parameters (type, severity, confidence) for action determination. severity is daemon-owned and takes one of two values, OPERATIONAL (0) or CRITICAL (1); a client cannot set it, and the daemon forces a single severity across every entry of one decision request.