Geolux SmartObserver - Introduction

SmartObserver User Manual
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SmartObserver Data Logger
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Introduction
The Geolux SmartObserver data logger is a highly-integrated device used to read the data
from the attached instruments and deliver this data to Geolux Hydroview - a cloud-based data
management software. The SmartObserver uses a GPRS connection for sending the data to the
server, with other communication options such as LoRaWAN available on demand.
The SmartObserver data logger uses several data interfaces to communicate with the attached
instruments. The primary interface is Modbus, and the data logger supports two Modbus lines. The
data logger also contains two CAN bus lines, an SDI-12 bus, and an analog 4-20 mA interface.
The data logger contains internal Flash memory which is used to provide a data storage backup
in case the wireless communication is disabled. Data stored inside internal Flash memory can be
read by connecting the data logger to a PC through a RS-232 interface.
Integrated power management is an important feature of the SmartObserver data logger. An
integrated battery charger allows the users to connect the data logger directly to a solar panel or
a small wind turbine and to a battery. SmartObserver will take care of managing battery charging,
thus eliminating the need to purchase and install a separate battery charger. The SmartObserver
data logger supports different battery types, such as lead-acid, NiMH, NiCd, LiFePO4 and Li+.
All instruments within the monitoring station can be connected to the power supply through
the SmartObserver data logger. SmartObserver contains three output power lines to power
the instruments, and the data logger shuts down these two power lines between periodic
measurements in order to reduce battery power consumption. Additionally, the secondary output
power lines can be congured to conditionally power up, to further reduce power consumption
– for example, it may make sense to disable some instruments under certain conditions, such as
disabling surface velocity radars when the level meter detects that the river bed is dry.