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EN
LoRaWAN COMFORT CO2 - Guide utilisateur / User guide version V1.1.1
64
Page
of 69
FR
2.8. Daily frame transmission
The device send a daily frame (every 24 hours) containing the following information:
• The ICONE indicator* (from 0 to 5) calculated with the data from the past 24 hours
• The time spent (given in number of 10 minutes) over the red threshold for IAQ (by default 1300 ppm) during the past 24 hours
• The minimum, the maximum and the average of the measured temperature (in tenth of degree)
• The minimum, the maximum and the average of the measured relative humidity (in %)
• The minimum, the maximum and the average of the measured CO2 concentration (in ppm)
This frame is also sent after reception of a 0x05 frame.
Register
Encoding
value
Value
Result
S300
Decimal
1
The daily frame is activated
PAY ATTENTION:
the calculations in this frame are based on the measures done
during the past 24 hours of the device. If the sampling period is modified and is
higher than 1 hour, the calculations of the ICONE indicator and of the time spent
over the red threshold will be less precise and more pessimistic than reality.
NOTE:
If a blackout period is activated in the device, the calculations in the daily
frame will be based on the measures done during the active period and so the black-
out period will not be taken into account.
*ICONE indicator: an indicator of confinement linked to the CO2 concentration
Created in order to evaluate the confinement in schools, this indicator can be used for other buildings.
Based on the CO2 Concentration, it takes into account the frequency of the confinement situations and their intensity.
Based on measures performed every 10 minutes, this indicator proposes 3 classes of concentration:
• the class 0: concentrations between 0 and 1000 ppm,
• the class 1: concentrations between 1000 and 1700 ppm,
• the class 2: concentrations higher than 1700 ppm.
The formula of the indicator: N = 8,3 log(1+f
1
+3 f
2
), where: f
i
are the proportions of CO2 values in the 3 classes (f0+f1+f2=1).
The result obtained is between 0 (confinement null) and 5 (extreme confinement).
--> THE TARGET IS TO CONSERVE A CONFINEMENT LEVEL LOW (1) OR NULL (0) <--
Send frame 0x30
24h period
reached?
Yes
No
Product in standby