FIEDLER H1, Руководство пользователя

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Hydro Logger H1 User manual
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electronics for ecology
FIEDLER
3.3. Communication module
Using an internal communication module, the hydro Loggr H1 connects to a ser-
ver on the Internet. The module is integrated into the device during the manu-
facturing and initial configuration of the device.
GSM/GPRS TECHNOLOGY
The communication module of the Hydro Logger H1
uses GSM/GPRS technology. It is a universally appli-
cable technology with excellent local and global
coverage, offering low operating costs and accepta-
ble battery life even for devices not connected to an
external power supply.
The communication module mediates all data
transmissions between the station and the user. It is
therefore usually not necessary to connect to the sta-
tion from a PC (laptop).
Measured data stored in the station is automatically
transferred via GPRS network to the database on the
server at the specified time. Conversely, a parameter
file is transferred from the server to the station if any
changes to the station parameters are needed. The
parameter file is transferred at the end of the data session and only if the user
has changed at least one of the parameters and placed the new parameter file
on the server. The MOST program is used to manage the parameter file.
The system of active stations and a passive server allows the GSM module to be
permanently switched off and only switched on when the station requests to
transfer measured data to the server or to send a warning SMS.
This concept allows the station to operate for many years without changing the
power battery. In a practical test, it was tested that the H1 station is able to
make up to 2,800 data sessions to the server (or send the same number of SMS
alerts) without changing the battery.
The GSM/GPRS communication module enables two-way data communication
including GPRS transmissions and sending or receiving SMS.
SIM CARD
The GSM/GPRS communication module can work with all types of prepaid and
tariff SIM cards, including SIM deployment in roaming traffic, i.e. abroad.
The amount of data transferred depends on the frequency of data sessions from
the device to the server. Typical monthly data consumption is in units of MB.
The device can be operated abroad using the local SIM card of the country in
question. Then it is typically necessary to set up the unit according to the requi-
rements of the local/domestic operator (APN parameters) or it is possible to use
a SIM card of the Hydro Logger manufacturer with permanently allowed opera-
tion in another country, i.e. roaming. When operating the unit while roaming,
higher operating costs for the SIM and application of the regulations of the
country in question can be expected.
Vo l u m e o f
t r a n s m i t t e d d a t a
F o r e i g n S I M
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