ADEUNIS ARF8276A Guide Utilisateur page 60

LoRaWAN Smart Building MOTION - Guide utilisateur / User guide version V1.0.0
Explanation of thresholds and hysteresis:
FR
EN
High alarm enabling
The complete list of registers can be found in paragraph 3.4.
2.1.5.03 Transmission over presence detection threshold
The product allows the transmission of an alarm frame beyond a certain number of detections defined by the user. This alarm can be enabled all
the time (day and night) or only at night.
Product in standby
Presence detection
Alarm activated
day and night
Sending frame 0x4F
Low alarm enabling
High alarm disabling
Alarm enabled
the night
No
Is it night?
Yes
Number of
No
detections
reached?
Yes
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 temperature sensor
High threshold -
(register 331).
high threshold hysteresis
• The high alarm hysteresis for the temperature sensor
(register 332)
Sensor value
• The low alarm threshold for the temperature sensor
Low threshold +
low thres-
hold hysteresis (register 333).
Low threshold
• The low alarm hysteresis for the temperature sensor
(register 334).
•The high alarm threshold for the humidity sensor
(register 341).
•The high alarm hysteresis for the humidity sensor
(register 342).
Low alarm • The low alarm threshold for the humidity sensor
disabling
(register 343).
• The low alarm threshold for the humidity sensor
(register 344).
Eg.
Register Value Value
encoding
S301 Decimal 0
S322 Decimal 1
S323 Decimal 3
S330 Decimal 100
S331 Decimal 0
In this example:
• The device is in event mode
• The device detects a presence and waits 10 seconds before detecting a new
one
• The device will sound an alarm if the number of detections exceeds 100
NOTE: As described in 2.1.5 it is possible to combine the periodic
mode and the alarm mode.
Result
Event mode (no periodicity)
Sensor wait time before allowing detection
again (x10 secs)
Presence sensor always active
Sending an alarm after 100 presence
detections
Presence sensor always active
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