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Y2
Y1
Height
Minor Movement
h
Y1
X1
2.4 m
2.9 m
2.7 m
3 m
3.6 m
3.4 m
Note: Longer dimension of detection area (Y1, Y2) is parallel to longer dimension
of EasyAir SNS300.
Figure 14. Occupancy sensing area.
16
Design-in Guide - EasyAir SNS300
H
X1
X2
Major Movement
Y2
X2
4.5 m
2.9 m
5.4 m
3.6 m
Sensor spacing recommendations
If it is critical to minimize or avoid occupancy
detection blind spots between two sensors, the
sensors must be spaced appropriately.
The type of movement that needs to be detected
in the overlapping area also impacts the spacing
between sensors.
The occupancy detection area is determined by the
following aspects:
a. Orientation of the sensors
b. Height at which the sensors are mounted
See below a snippet from EasyAir SNS300 datasheet
describing occupancy sensing
For example:
If
• the sensors are mounted at 8 feet
• an occupancy detection overlap on the Y direction
for major movement is desired for the application
then
• sensors must be placed no farther than 15 feet
apart
Reliable RF communication
If overlap is not critical, then spacing is dictated by
the allowable distance for reliable RF communication
between sensors. Maximum allowable distance is 40
feet line-of-sight.
April 2019
August, 2019
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