How do facilities teams calibrate occupancy sensors to avoid false readings in open-plan offices?

Occupancy sensor calibration involves adjusting sensitivity, placement, and detection thresholds so that motion and heat-based sensors accurately reflect actual usage patterns in open-plan office environments.

Addressing Common Sources of False Readings

• Sensors placed near HVAC vents or windows can misread temperature fluctuations as occupancy signals.
• Overlapping sensor ranges in open layouts sometimes double-count movement across adjacent desk clusters.
• Stationary occupants with minimal movement can be missed by motion-only detection settings.

Calibration Techniques for Accuracy

• Sensitivity thresholds are adjusted based on desk density and typical movement patterns within each zone.
• Combining passive infrared with CO2 or acoustic sensors improves detection accuracy for stationary occupants.
• Regular firmware updates and sensor cleaning prevent gradual sensitivity drift over time.

Validating Sensor Data Against Actual Usage

• Manual headcount audits are periodically compared against sensor logs to check calibration accuracy.
• Zone-by-zone heat maps help identify sensors consistently over- or under-reporting occupancy.
• Facilities teams should recalibrate sensors after any office layout change affecting sightlines or furniture density.

accurate occupancy sensing in open-plan offices depends on correct placement, sensitivity tuning, and combining multiple sensor types, with ongoing validation against real usage data to maintain calibration accuracy over time.