INDUSTRY FIELD GUIDE
Conveyor handoff data for AI event matching
A tote can be detected on two sides of a transfer without representing two completed movements.
NAICS 333922 · Conveyor and Conveying Equipment Manufacturing
A tote can be detected on two sides of a transfer without representing two completed movements. NIST’s manufacturing monitoring research uses components including conveyor belts, inspection cameras and sensors. A conveyor builder can propose a small test that aligns signals with an independent observation. NIST manufacturing monitoring research
Use a simulation or supervised training fixture with a generic tote. Write a trace where a handoff is confirmed by the next station and a trace with two detections near the boundary but no downstream confirmation. Note the timebase for each sensor and the reviewer’s ground truth. Ask the model to reconstruct the handoff and identify any ambiguous interval. Test multiple transit times so a fixed time threshold cannot explain every case.
Keep proprietary layout diagrams, control code, customer product flow, and alarm mappings outside the packet. Use simulated logs if filming would require access to a moving line or restricted area.
Describe a conveyor event dataset
Original Fiund exercise
Count one tote across a two-sensor handoff
An original tabletop sketch and fictional sensor log model passage of inert boxes.
| Record | Source | What it records |
|---|---|---|
| 1 | Sensor A | Tote T8 exit at 10:01:03. |
| 2 | Sensor B | T8 entry at 10:01:05; tote T9 entry at 10:01:06. |
| 3 | Transfer rule | Pair A exit and B entry by tote ID within five seconds. |
Question for the model
How many matched transfers and unmatched entries appear?
Show the reference answer and checks
One matched transfer is supported: T8's B entry follows its A exit by two seconds under records 1–3. T9 has a B entry but no paired A exit. Do not count both T8 records as separate totes or treat T9 as a matched transfer.
- Counting sensor events instead of transfers
- Pairing the nearest timestamp with the wrong tote
Fields to preserve
- tote_id
- Identifies the transported unit
- sensor_event_role
- Distinguishes exit and entry
- handoff_delta_seconds
- Tests the matching window
Test another case
Include a repeated sensor-B entry with the same event ID; deduplicate it without discarding another tote.
No real control settings, proprietary conveyor layouts, worker imagery or safety guidance.
Discuss a contribution
Describe the sources you control, the task they could support and what has already been checked. Use the existing-data assessment for an archive or the collection brief for a new recording project. The contributor agreement defines Fiund’s licensing authority and compensation. A guide or fictional exercise does not establish an accepted collection or a sale.