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3. Operating process
After detecting some movement on the device, the interrupt signal from the sensor is
generated. Then, the electrical power is sent to the sensor. Once the sensor is operating, the
output of INT will be steady at high level. If the device is detecting some movement, the
output of the INT is shortly maintained at low level and goes back to the high level as shown
in Figure below.
4. Package
This module is contained the RF sensing part and the signal processing part
which are the green and brown panels respectively represented as a figure below.
Figure 3.1
Processing part
Sensor part
Figure 4.1
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