docs: initialize YoVision requirements and architecture

2026-08-03 17:22:22 +08:00
commit 8a99b388c4
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+{
+  "schema_version": "0.1",
+  "id": "evt_01J8XT7Q3R5S8V2W4X6Y9Z1A3B",
+  "source_event_id": "FALL-b7d2e4-000003",
+  "tenant_id": 1001,
+  "site_id": 20301,
+  "device_id": 5044,
+  "sensors": [
+    { "device_id": 5044, "modality": "radar", "role": "primary" },
+    { "device_id": 5045, "modality": "contact", "role": "corroborating" }
+  ],
+
+  "kind": "fall",
+  "severity": "high",
+  "confidence": null,
+
+  "occurred_at": "2026-08-03T02:14:08.300Z",
+  "detected_at": "2026-08-03T02:14:11.140Z",
+  "latency_seconds": 2.84,
+  "config_version": "radar-v1-2026.08.01",
+
+  "rule": { "id": "R-ELD-004", "version": 1, "code": "fall_confirmed_radar" },
+
+  "subject": {
+    "class": "person",
+    "track_id": "R-0002",
+    "attributes": {},
+    "anon_id": null,
+    "identity": null,
+    "identity_status": "not_enabled"
+  },
+
+  "observation": {
+    "zone": "bathroom",
+    "dwell_sec": null,
+    "bbox_seq_uri": null,
+    "keypoint_seq_uri": null,
+    "signal_seq_uri": "s3://yov-evt/20260803/evt_01J8XT7Q.../radar_track.jsonl"
+  },
+
+  "evidence": {
+    "snapshot_uris": [],
+    "clip_uri": null,
+    "clip_range": null
+  },
+
+  "dedup_key": "20301:bathroom:fall:2026-08-03T02:10",
+  "aggregated_into": null,
+
+  "outcome": "unknown",
+  "outcome_source": null,
+  "outcome_reason": null,
+
+  "diagnostics": {
+    "fsm_state": "CONFIRMED",
+    "suspected_at_monotonic": 88214.02,
+    "confirmed_at_monotonic": 88216.86,
+    "horizontal_angle_degrees": null,
+    "visible_joint_count": null
+  },
+
+  "ext": {
+    "radar_doppler_peak_mps": -1.9,
+    "radar_target_height_m": 0.21
+  }
+}