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Quality Inspection Automation
质量检测自动化
Machine-vision inline inspection covering dimensions, surface defects, character reading and assembly presence — replacing manual visual QC.
- >99.2% defect catch rate
- False-reject held under 0.8%
- Keeps pace at 60–120 pcs/min
- Dimensional / surface / OCR / assembly checks
## Capabilities
- Dimensional: ±0.02mm repeatability with good calibration
- Surface defects: scratches, contamination, missing material, color shift
- OCR: lot code, production date
- Assembly presence: missing/wrong part, orientation
## Real numbers
On a connector customer's line, defect catch rate is >99.2% with a 0.8% false-reject rate. False-reject is the number that matters — pushing catch rate too high starts rejecting good parts and adds re-check labour. We set the "miss 0.5% vs over-reject 2%" trade-off with the customer; there is no universal answer, it depends on downstream cost.
## Lighting beats algorithms
About 80% of failed vision projects are a lighting problem, not an algorithm problem. We usually spend more time on the illumination design than on the detection logic. With stable imaging, most defects separate with classical methods — deep learning is not always needed.
## When we use AI
For broken characters or micro-defects on complex textured backgrounds, classical thresholds are hard to tune; only then do we bring in a deep-learning model, and it needs ≥300 real defect samples from the customer. Accuracy is not guaranteed with fewer.
Named references available on request.
## Technical Specifications
| Item | Range |
|---|---|
| Inspection speed | up to 1,200 ppm |
| Vision | 2D/3D cameras, up to 12 MP; deep-learning defect models |
| Checks | Fill level, cap/seal, label, code, foreign matter |
| Reject accuracy | 100% verified reject with confirmation sensor |
| Data | SPC trends, image archiving, MES upload |
## Typical Line Configuration
Vision stations (cap/label/level), X-ray or metal detector, checkweigher, reject verification, central quality dashboard.
## Case Study
A bottled-water plant cut customer complaints 73% after deploying cap+label+level vision at 900 BPM with image traceability.
## FAQ
**Q: When is deep learning better than rule-based vision?**
A: For variable, texture-like defects (scratches, contamination, weld pools) with sufficient sample images; rule-based remains best for measurements and presence checks.
**Q: What false-reject rate is typical?**
A: Well-tuned systems run below 0.3% false rejects; we tune on your real production samples during FAT and again at SAT.
**Q: Can inspection images be stored for traceability?**
A: Yes - NG images always, and OK images on a rolling window, tagged with batch and timestamp, exportable to your QMS.
