Genealogy is incomplete for a reworked batch.
Detect: Traversal finds consumed components without linked finished serials.
Recover: Mark the affected set incomplete and ask traceability staff to resolve it before narrowing containment.
Manufacturing · INDUSTRY BLUEPRINT
Production quality containment assistant
Connect quality signals, lot genealogy, and maintenance evidence before a supervisor approves containment work.
Explore in the architecture studioThe business situation
Illustrative reference architecture. Validate requirements for your organization.
Illustrative architecture: An electronics plant observes a rise in solder inspection failures after a component lot change. Engineers need to connect inspection images, feeder setup, supplier lots, and machine maintenance history while production continues. Agents assemble evidence and candidate checks; established plant controls retain equipment and release authority.
Problem
Different systems use station, batch, and serial identifiers inconsistently. A model that confuses correlation with root cause can recommend unnecessarily broad containment or miss affected units. Production latency also differs from the seconds-to-minutes timescale suitable for agent analysis.
Why a multi-agent system?
Genealogy, quality, maintenance, and planning specialists can inspect distinct evidence concurrently. A deterministic lineage graph defines potentially affected material, while agents formulate testable hypotheses and human engineers decide corrective action.
Intended outcome
The intended result is a reviewable operational decision with source evidence and explicit ownership. Measure evidence assembly time and completeness before claiming lower scrap or downtime. Production benefits depend on engineering response and process changes, so dashboards must separate agent preparation from physical corrective outcomes.
Specialist agent team
Genealogy investigator
Trace components through lots, work orders, and finished serials.
Tools
- Manufacturing execution query
- lot graph traversal
Authority boundary
Cannot change traceability records or remove material holds.
Quality evidence agent
Compare inspection patterns and retrieve representative images and measurements.
Tools
- Quality database
- image viewer
Authority boundary
Cannot declare product conformity or infer unmeasured defects.
Maintenance analyst
Correlate calibration, alarms, and service history with affected equipment intervals.
Tools
- Maintenance history API
- historian reader
Authority boundary
Cannot write controller settings or acknowledge safety alarms.
Containment planner
Draft bounded inspection and material-hold proposals with affected inventory references.
Tools
- Inventory read API
- work-order draft writer
Authority boundary
Supervisor approval is required for holds, rework, and production changes.
Enterprise systems
Manufacturing execution system
Owns work-order progress, serial genealogy, and material consumption history.
Quality and maintenance platforms
Provide inspection measurements, calibration versions, and approved work procedures.
Industrial data gateway
Exposes buffered equipment telemetry to the analysis network without a direct agent-to-controller path.
Architecture diagrams
flowchart LR
N0["Production quality containment assistant"]
N1["Genealogy investigator"]
N2["Quality evidence agent"]
N3["Maintenance analyst"]
N4["Containment planner"]
N5["Evidence ledger"]
N6["Human decision"]
N7["Authorized adapter"]
N0 --> N1
N0 --> N2
N0 --> N3
N1 --> N4
N2 --> N4
N3 --> N4
N4 --> N5
N5 --> N6
N6 --> N7sequenceDiagram
participant O as "Case orchestrator"
participant S as "Manufacturing execution system"
participant H as "Accountable reviewer"
O->>S: Query affected lot genealogy
S-->>O: Missing rework serial links
O->>H: Escalate incomplete containment scope
H-->>O: Confirm conservative investigation boundary
O->>S: Save approved inspection work order
S-->>O: Work order receiptRuntime flow
- 1
Capture quality signal
Register the inspection event and station context; distinguish sensor anomalies from confirmed quality observations.
- 2
Build affected set
Traverse exact lot and serial relationships from the manufacturing record, retaining unknown genealogy as an explicit gap.
- 3
Compare evidence windows
Align inspection timestamps with component changeovers, calibration records, and machine events using synchronized clocks.
- 4
Generate hypotheses
Specialists propose bounded explanations with supporting and contradicting evidence; do not present a ranking as proven causation.
- 5
Review containment
Show the supervisor the affected-set query, proposed inspections, production impact, and evidence uncertainty before any hold is authorized.
- 6
Execute approved work
Submit a versioned maintenance or containment work order through the existing workflow and track completion evidence separately from issue resolution.
Failure recovery
A telemetry clock drifts across a changeover.
Detect: Time synchronization checks disagree with station event sequence.
Recover: Use trusted production event ordering and label the correlation window uncertain pending clock repair.
Security & decision boundaries
- Keep industrial control credentials and safety functions outside the agent runtime.
- Require supervisor approval for holds, rework, and equipment-setting changes.
- Attach measurement units, calibration status, and source timestamps to quality evidence.
- Separate candidate causal hypotheses from verified engineering findings.
- Enforce plant and product-line permissions for supplier and production data.
Operational metrics
Measurement definitions, not promised improvements.
Containment preparation time
Time from confirmed quality signal to a supervisor-reviewable affected-set proposal.
Genealogy coverage
Affected serials with complete component ancestry divided by serials in the investigation scope.
Hypothesis confirmation rate
Reviewed hypotheses supported by engineering tests divided by hypotheses tested.
Work-order closure fidelity
Completed actions with required inspection evidence divided by actions marked complete.
Architecture tradeoffs
| Decision | Benefit | Cost |
|---|---|---|
| Buffered telemetry access | Protects plant control networks from model activity. | Analysis may lag machine events and cannot replace real-time control. |
| Exact genealogy first | Makes containment scope auditable. | Incomplete historical records can delay a narrow proposal. |
| Parallel specialist analysis | Brings quality and maintenance perspectives together. | Conflicting explanations require explicit engineering adjudication. |
Rollout plan
Historical incident replay
Plant engineers verify affected-set queries and that every hypothesis is distinguished from a confirmed cause.
Shadow line operation
One line compares draft containment plans with existing investigations while all equipment access remains read only.
Approved work-order pilot
Supervisors accept controlled draft integration after hold permissions, duplicate events, and clock-drift recovery pass.