Fig. 15
From: The design of an indirect method for the human presence monitoring in the intelligent building
Measured waveform of CO2 (ppm) and illuminance E (lx) in IAB (9.1.2018–10.1.2018). 9.1.2018 (hh:mm:ss): 1 arrival (8:50:00), 2 departure (10:30:00), time of person presence (TPP) ∆t1 = 1:40:00; 3 arrival (10:50:00), 4 departure (11:10:00), TPP ∆t2 = 0:20:00; 5 arrival (11:20:00), 6 departure (11:30:00), TPP ∆t3 = 0:10:00; 7 arrival (11:40:00), 8 departure (12:10:00), TPP ∆t4 = 0:30:00; 9 arrival (12:30:00), 10 departure (13:00:00), TPP ∆t5 = 0:30:00; 11 arrival (14:30:00), 12 departure (17:00:00), TPP ∆t6 = 2:30:00; 13 arrival (17:50:00), 14 departure (19:20:00), TPP ∆t7 = 1:30:00; 15 arrival (19:40:00), 16 departure (20:30:00), TPP ∆t8 = 0:50:00