Caen RFID Easy2log RT0005, Техническое руководство

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easy2log© RT0005 Technical Information Manual 14
As another example suppose that the user wants to monitor the temperature trend for cooled food, we can define
some histogram bins as follows:
Bin Low Limit
(°C)
High Limit
(°C)
Enabled Threshold Store
Samples
Sampling Interval (min.)
0 -20 -5 Yes 5 Yes 5
1 -5 0 Yes 0 No 10
2 0 70 Yes 3 Yes 5
Tab. 2.3: Example of histogram bins for cooled food
With this configuration the tag generates an alarm if the temperature rise between -20°C and -5°C for a minimum
amount of time ranging from 20 min. to 29 min. and 59 sec. or if it is in the range between 0°C and 70°C for a minimum
amount of time ranging from 5 min. to 14 min. and 59 sec. (see Fig. 2.3 and Fig. 2.4). In this example the samples are
not stored in the log memory in order to save memory space.
Blue Threshold
(5 samples in Bin 0)
Red Threshold
(3 samples in Bin 2)
Temp.
S
a
m
p
le
s
Fig. 2.3: Cooled example, histogram view