Figure 1.
Example smart home sensors including 1) a passive infrared motion detector [4], 2) a magnetic reed switch door sensor [4], 3) a pressure sensor to detect if a chair or bed is occupied [18], 4) a temperature sensor to detect if the stove is being used [4], 5) a water usage sensor [19], 6) an electricity consumption sensor to detect appliance usage [20], 7) a microphone array [21], 8) a smart phone [22], and 9) a video camera [23].