Product information Wireless data loggers
3
Introduction to the wireless data recording systems
A data recording system is a set of instruments which allows
measuring
and
storing
the values of certain physical quantities, such as
temperature, humidity, pressure, solar radiation, etc.
A data recording system is generally made of:
-
Sensors
: they are placed at the measuring points and convert the values of the physical quantities into electrical analog or digital
signals.
-
Acquisition system
: it reads and logs the electrical signals outgoing from the sensors. If the acquisition system is digital, the ac-
quired values are kept in the system’s internal memory until the memory is full.
-
PC
: the transfer of data from a digital acquisition system to a PC allows storing the measured values even after the internal memory
of the acquisition system is full. The PC also allows processing and analyzing the acquired values.
SENSOR
SENSOR
ACQUISITION
SYSTEM
PC
Data recording system
Connecting the components of the system
The components of the recording system can be connected in two different ways:
-
Wired connection
-
Wireless connection by radio frequency transmission
The type of connection depends on various factors, such as:
-
the distance among the various components of the system;
-
ease of installation;
-
cost of installation;
-
possibility to easily modify the system;
-
electromagnetic interferences in the environment of installation.
Advantages of the wireless connection
-
Quick and easy installation
: as it is not necessary the laying of cables and conduits, a wireless system is installed much more easi-
ly and quickly than a wired system, especially when the components are at a great distance from one another.
-
Reduction of installation costs
: the absence of cables allows a considerable saving in cost of material and labor.
-
Flexibility of the system
: the absence of fixed links between the various parts allows moving the system components at any time
without problems.
-
Low maintenance
: the cables are subject to deterioration over time, the absence of cables reduces the maintenance costs of the
system.
Contraindications of the wireless connection
The operation of a wireless system can be difficult in environments with excessive electromagnetic interferences (in which case a wired
shielded connection may be preferable) or in areas particularly shielded that hinder the radio transmission between the parts of the
system.
Product information Wireless data loggers
