Laird Sentrius RS191, Руководство по настройке

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The battery level is measured each time a sensor data uplink is performed, with a scale of 0 through 5 being used to represent
remaining percentage of 0 through 100%, as shown in
Table 1 .
Table 1 - Battery percentage values
Value Percentage Range
0 < 5
1 5
– 20
2 21 - 40
3 41 - 60
4 61 - 80
5 81- 100
Depending upon the battery type in use, different algorithms are used to calculate the remaining battery level. These are
described in the following sections.
The relatively linear effect of temperature upon alkaline battery discharge permits a look up table system for calculating the
remaining battery life. Temperature dependent voltages (combined series voltages of the two AA batteries inserted), as shown
in
Table 2 through Table 7 , are used to determine the remaining battery life, with an internal temperature sensor being used to
determine the best possible match.
Table 2 - Alkaline battery levels at -40° C
Level Remaining Voltagebaaaa (V)
5 >2.65
4 >2.5
3 >2.35
2 >2.25
1 >2.2
Table 3 - Alkaline battery levels at -20° C
Level Remaining Voltage (V)
5 >2.65
4 >2.55
3 >2.45
2 >2.35
1 >2.3
Table 4 - Alkaline battery levels at 0° C
Level Remaining Voltage (V)
5 >2.7
4 >2.6
3 >2.5
2 >2.4
1 >2.3