Usage; Measurement Process - Libelium Waspmote Technical Manual

Sensors

3.4.2. Usage

This sensor allows to the Video Camera Sensor Board generate an interrupt in Waspmote when the presence sensor detects, for
example, a person or an animal.

3.4.3. Measurement process

The PIR sensor (Passive Infra-Red) is a pyroelectric sensor mainly consisting of an infra-red receiver and a focusing lens that bases
its operation on the monitoring of the variations in the levels of reception of detected infra-reds, reflecting this movement by
setting its output signal high.
The 10μm spectrum corresponds to the radiation of heat from the majority of mammals as they emit temperatures around 36°C.
The maximum detection direction goes perpendicular to the Video Camera Sensor Board.
Figure : PIR maximun detection range
Figure : Maximun range jumper configuration
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