System operation
UM0857
22/66
Doc ID 16752 Rev 1
demonstrating the concept which has no relation with a real earthquake and has not been
tested using any vibration-producing system until now.
2
For the system to detect any simultaneous node movement, at least one node should be
active in the system.
3.5.4
Low battery and battery recovery
The system has the capability to detect a low battery of the smart monitoring station as well
as that of all the nodes. Whenever the system detects a low battery, a warning is displayed.
Also, on the data screen of the station (STEVAL-IFS014V1) the node number becomes red,
indicating the low battery of that particular node. Similar information is displayed on the data
screen of the node also (see
and
When the battery is charged, the system detects the battery status and displays a message
on the screen and the node number becomes blue again.
Note:
1
When the battery value falls to 3.3 V, the board interprets this value as a low battery and the
user should charge the battery. To prevent total discharging of the battery, the board
switches off when the battery voltage falls to 2.5 V. The board shuts down after low-battery
detection in approximately 2 hours, but this time depends on the type and rating of the
battery being used.
2
Even after the system shuts down, the user should charge the battery within 8 hours
otherwise deep discharging can cause the permanent damage to the battery.
3.5.5 Clock
alarm
The smart monitoring station has the capability to configure the clock alarm for the same
day. The alarm time should be greater than the current system time and when the system
time matches that of the configured alarm time, the system sounds an alarm and a picture of
a bell is displayed.
www.BDTIC.com/ST
