Research Article

LED Context Lighting System in Residential Areas

Table 9

Abstraction process of context information.

Context sourceRaw context dataLow-level context informationHigh-level context information

PIR sensor0, 010, 1Entering the living room
0, 000, 0Leaving the living room
1, 011, 1Entering the bedroom
1, 001, 0Leaving the bedroom
2, 012, 1Entering the study room
2, 002, 0Leaving the study room
3, 013, 1Entering the kitchen
3, 003, 0Leaving the kitchen
4, 014, 1Entering the bathroom
4, 004, 0Leaving the bathroom

Piezoelectric sensor30, 325530, 997 (g)Sitting on the sofa in the living room
30, 17630, 28 (g)Not sitting on the sofa in the living room
31, 3255 31, 997 (g)Lying on the bed in the bedroom
31, 17631, 28 (g)Not lying on the bed in the bedroom
32, 325532, 997 (g)Sitting on the chair in the bedroom
32, 17632, 28 (g)Not sitting on the chair in the bedroom
33, 325533, 997 (g)Sitting on the reading chair in the study room
33, 17633, 28 (g)Not sitting on the reading chair in the study room
34, 325534, 997 (g)Sitting on the kitchen chair in the kitchen
34, 17634, 28 (g)Not sitting on the kitchen chair in the kitchen
35, 325535, 997 (g)Standing near the cooking table in the kitchen
35, 17635, 28 (g)Not standing near the cooking table in the kitchen
36, 325536, 997 (g)Standing near the sink in the kitchen
36, 17636, 28 (g)Not standing near the sink in the kitchen

Power sensor40, 317209740, 937.97 WUsing the TV
40, 000040, 0 WTurning off the TV
41, 316406641, 929.66 WUsing the treadmill
41, 000041, 0 WTurning off the treadmill
42, 03003642, 30.36 WUsing the desk lamp
42, 000042, 0 WTurning off the desk lamp
43, 315608343, 921.83 WUsing the microwave
43, 000043, 0 WTurning off the microwave