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12.12.1 Human Activity Sensor
Area of human availability, activity level and absent is judged based on pulses by using infrared sensor. The
internal setting temperature shift, fan speed and horizontal airflow direction are adjusted in order to provide
comfort environment while maintain the energy saving level.
Human activity judgment is as following:
12.12.1.1 Signal Detection
23ft (7m)
A
Presumption flow of human position.
Detection outline.
o
12.12.1.2 Information Log
The signal from Infrared sensors will be log to human activity database for further analysis.
12.12.1.3 Human Activity Level Judgment
Human Activity Level is judged based on the frequency of pulses detected by the infrared sensors within a
timeframe. The activity level will be categorized into High, Normal, Low level.
When a pulse is detected within this timeframe, the status of human presence is judged.
When there is no signal detection continues for 40 minutes or more, the status of human absence is judged.
Signal Detection
Information Log
Human Activity Level Judgment
Determination of Presence or Absence
C
B
120°
Human Sensor Motion Check
Check Installation Position and Detection Area
Human Sensor STM move
Fixed Detection
Process Detection Result
6.6ft (2m)
Sensor move to left and
right and detection area
(A, B, C) output frequency
is detected
Determination of fixed
detection area and its order
37
23 ft (7m)
(Fixed detection is
continued until it
measures all the
detection area)
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