Table 2.
The sampling strategy for each of the sensor streams at the individual rooms. CO2 is sampled using dynamic sampling rate (DSR), where the sampling frequency is increased (up to one sample per minute) when higher levels of CO2 are observed. Occupant counts are sampled using a static sampling rate (SSR). The relative humidity and temperature streams are sampled using a threshold-based strategy. The variable air volume (VAV) damper position is sampled when there is a change in the position.
| Sensor | Room 1 | Room 2 | Room 3 |
|---|---|---|---|
| CO2 | DSR (5 minutes interval in normal operation). | DSR (5 minutes interval in normal operation). | DSR (5 minutes interval in normal operation). |
| Relative humidity | Threshold based (≈2% change). | Threshold based (≈2% change). | Threshold based (≈2% change). |
| Illuminance | SSR (1 minutes interval). | SSR (1 minutes interval). | SSR (1 minutes interval). |
| Occupant counts | SSR (1 minutes interval). | SSR (1 minutes interval). | SSR (1 minutes interval). |
| Enter door 1 | SSR (1 minutes interval). | SSR (1 minutes interval). | SSR (1 minutes interval). |
| Exit door 1 | SSR (1 minutes interval). | SSR (1 minutes interval). | SSR (1 minutes interval). |
| Enter door 2 | SSR (1 minutes interval). | SSR (1 minutes interval). | SSR (1 minutes interval). |
| Exit door 2 | SSR (1 minutes interval). | SSR (1 minutes interval). | SSR (1 minutes interval). |
| Temperature | Threshold based (≈0.1° change). | Threshold based (≈0.1° change). | Threshold based (≈0.1° change). |
| VAV damper position | Sample on change. | Sample on change. | Sample on change. |