9
4.2.2
Occupancy Sensor using temperature sensor input
End point 0x22, 0x28 and 0x29 can be configured as a logic module that controls the occupancy
sensor signal base on the user defined settings for the temperature sensor input.
Logic module
If
(Temperature >
ArmThreshold_MaxTemperature
)
or
(Temperature <
ArmThreshold_MinTemperature
)
Temperature measure value
Cluster ID 0x0402
Attribute ID 0x0000
Occupancy state
Occupancy state
Use case – Energy savings in an office building
The device is installed to obtain energy savings in an office with an air condition. A ZigBee relay is
installed to turn on the air condition when the occupancy sensor detects movements in the room. This
functionality can be obtained by using the standard occupancy sensor functionality – Standard ZCL
attributes.
Using the manufacture specific attributes in section 4.2.1.2 provide the user with an extra check
before the air condition is turned on.
The installer can configure the
ArmThreshold_MaxTemperature
attribute to 25 degrees and when
movements are detected in the room the relay only turns on the air condition when the temperature is
above the MaxTemperature Setting (25 degrees).
The ArmThreshold_MinTemperature attribute can be used in winter season where the air condition
shall warm up the room. The MinTemperature attribute is configured to 20 degrees and when
movements are detected in the room and the temperature is below MinTemperature the air condition
is turned on heating the room.
20 degrees
MinTemperature
25 degrees
MaxTemperature
Air Condition
OFF
Air Condition
ON
Cooling
Air Condition
ON
Heating
Temperature
