ADEUNIS Sigfox MOTION V2 Guide Utilisateur page 42

Sigfox MOTION V2 - Guide utilisateur / User guide version V2.0.1
Explanation of thresholds and hysteresis:
FR
EN
High alarm enabling
2.1.5.03 Transmission presence detection or no presence
The product allows the transmission of an alarm frame it detects a presence in the room or it do no detect a presence for a certain time (deter-
mined by the user).
The parameters associated with this alarm are : alarm presence (S330) and the non presence time (S322).
Eg.
Product in standby
Presence
detection ?
YES
Activation presence
alarm
Luminosity measure
Send frame 0x5D
Low alarm enabling
High alarm disabling
Period
No
without
presence
reached?
YES
Deactivation presence
alarm
High threshold -
high threshold hysteresis
Sensor value
Low threshold +
low thresh-
old hysteresis
Low threshold
Low alarm
disabling
Register Value
encoding
S322 Decimal
No
S330 Decimal
In this example:
• The presence alarm is activated
• The device will sound an alarm if it detect a presence or if it do not detect
a presence during almost 5 minutes.
NOTE: As described in 2.1.5 it is possible to combine the periodic
mode and the alarm mode.
The parameters associated with this operating mode
are:
• The transmission period (equal to zero in this use
case) (register 301).
• The acquisition period (register 321)
• The high alarm threshold for the brightness sensor
(register 341).
•The high alarm hysteresis for the brightness sensor
(register 342).
• The low alarm threshold for the brightness sensor
(register 343).
• The low alarm threshold for the brightness sensor
(register 344).
Value Result
30 When presence is not detected
anymore, this delay allows the sensor
to consider that the non presence is
confirmed
1 Alarm activated
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