MAWS HydroMet™ Systems for Meteorological and Hydrological ...

Chapter 3 __________________________________________________________________ Software
• Controlling powering of the telemetry devices according to the user
configured schedule whenever the charging of the back-up batteries
from the solar panel is OFF.
• Reducing the telecommunication rate whenever the system works
on back-up batteries.
• Reducing the sampling rate whenever the system works on back-up
batteries.
The low power monitoring is an intelligent algorithm taking into
account the charging state of the back-up batteries and repeated mains
power failures.
Power monitoring of telemetry
devices
The MAWS station offers intelligent power monitoring features for
guaranteeing extended operation. When there is a failure in supplying
primary power to a remote station, the MAWS system can be
configured to switch off the power from the telemetry device for most
of that time. In order to conserve the back-up battery capacity, the
power can be switched on at user-defined times for a short period to
transmit an alarm or other critical data. Whenever the primary power
is recovered, the telemetry device will again be powered normally.
Dynamically Controlled Timer Function
MAWS application execution is mostly controlled by timers, which
are configured to fixed intervals using the MAWS Lizard Setup
Software.
Timer intervals controlled by thresholds provide the means to change
these intervals dynamically according to limit values (thresholds)
while the system is running. Each measured and/or calculated data
item can be configured to be monitored by thresholds.
For example, the following topics can be handled using this control
method:
- Power consumption control when operating on backup batteries.
MAWS can keep the communication equipment permanently on
when external AC-power/solar charging is available, and switch to
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