User`s manual
Intel-GE Care Innovations™ QuietCare® System
Hardware Maintenance Guide
Document: DHF-3756 Page 41 of 60
Revision: 1.0 Effective: January 29, 2012
Sensor Mounting & Positioning
This section provides basic information about QuietCare
sensors including proper positioning, care, and
troubleshooting.
AboutQuietCareSensors
NOTE: The accompanying diagram assumes an 8 degree
angle mount being used.
The Passive Infra-Red (PIR) sensors detect movement of
warm bodies. Because they respond to heat, they are
relatively slow-acting. For example, they will respond more to
your body’s moving than to your hand’s waving around.
The sensors respond to a 2-degC temperature differential.
Usually the ambient temperature is cooler than the moving
object, but the sensor will also respond if the moving object is
cooler than the background..
The sensors have been calibrated so that they do not respond
to small pets (they cannot be “masked” to avoid interference
from large pets). But they may respond to heat sources such
as hot air from vents or billowing behind curtains.
Because most surfaces absorb infrared heat, surfaces such as
glass windows and mirrors will not precipitate false motion
resulting from reflected heat.
Horizontally, the sensors cover an area 49 degrees to the left
and 49 degrees to the right. Vertically, they cover from a flat
horizontal plane to about 50 degrees downward—looking out
from the sensor, with sensor upright (small white fin on top)
and the sensor screen facing forward. The sensor is
somewhat sensitive at a 70 degree downward angle so will
catch movement of people walking under it.
The sensor range is 20 feet. The diagram above shows the different sensor zones. The sensor detects motion
when the warm object moves into or out of one of the zones. The green LED on the sensor blinks whenever it
detects motion.