Research Article
Development and Application of a ZigBee-Based Building Energy Monitoring and Control System
Table 2
Current and voltage data comparison between the ZBEMCS and a standard clamp meter.
| | A: ZBEMCS | B: standard clamp meter | A−B | | Current (A) | Voltage (V) | Current (A) | Voltage (V) | Current (A) | Voltage (V) |
| Lamp | 0.27 | 235.2 | 0.25 | 238 | 0.02 | −2.8 | 0.26 | 235.5 | 0.24 | 238.2 | 0.02 | −2.7 | 0.25 | 235.5 | 0.22 | 237.2 | 0.03 | −1.7 | 0.24 | 235.3 | 0.19 | 236.4 | 0.05 | −1.1 | 0.23 | 235 | 0.18 | 236.5 | 0.05 | −1.5 | 0.22 | 235 | 0.16 | 236.5 | 0.06 | −1.5 | 0.21 | 233.9 | 0.15 | 236.6 | 0.06 | −2.7 | 0.2 | 234 | 0.14 | 236.7 | 0.06 | −2.7 |
| Hair dryer | 0.77 | 235.4 | 0.72 | 237.4 | 0.05 | −2.0 | 3.53 | 233.8 | 3.46 | 236.1 | 0.07 | −2.3 | 4.49 | 233.8 | 4.42 | 235.5 | 0.07 | −1.7 |
| Electric heater | 2.82 | 234.5 | 2.75 | 236.3 | 0.07 | −1.8 | 4.71 | 233.2 | 4.65 | 235 | 0.06 | −1.8 | 7.5 | 231.7 | 7.45 | 233.4 | 0.05 | −1.7 |
| Average deviation | 0.051 | −2.0 |
| Standard deviation | 0.017 | 0.545 |
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