P092D.ABD.CAIRNETGPRS-V2-UserGuide.121018-EN
ENVEA - 111, Bd Robespierre
– CS 80004 – 78304 Poissy Cedex 4 – France
Tel.: +33 (0)1 39 22 38 00
– Fax: +33 (0)1 39 65 38 08
The Cairnet network allows:
□
Continuous monitoring of a pollutant at odors source location.
Supervision of each measurement point of in mesh network.
Up to 4 different sensors available for one measurement location.
□
With the Caircloud solution:
Real-time monitoring of the measures of all sensors by use of map display or more classic tables and graphs.
A complete history since the network implementation is possible (up to 3 years for 15 minutes averages data).
Access to the secure web space from anywhere and with several support (tablet, smartphone or PC).
□
By optional modules:
Take remote control and management of the site by the generation of daily, monthly and annual reports.
With trigger alarms after thresholds overruns.
Automatic export to air quality modelling systems, FTP server, etc.
2.2
Principle of operation
The set of Cairnet and Cairlcoud is preconfigured at the factory and requires no other set up than the writing of the
telephone network parameters of the M2M SIM card.
This first setup aims to initiate the Network. The Caircloud creates configurations files in the FTP server useful for the
functioning of Cairnet. In the over side, the Cairnet reads theses files and then, each 10 minutes (by default), write the
measurements files (coded) on this same FTP server that the Caircloud picks every 15 minutes.
Once activated, the exchange procedure between the 3 entities is as follow:
The Cairnet, every 10 minutes:
a.
Access to the time server by an internet connection.
b.
Access to the FTP server to read the configurations files.
Gathering the measurements of each of its sensors, creation of a measurement file by sensor and then they
are transmitted to the FTP server. Each measurement files contains the 96 minutes (or 48 minutes depending
of the used Cairsens).
If a non-commination is encountered (unavailability of the 3G carrier signal for example), continuous attempts
will be made until the transmission if done.
c.
Waiting for the next dispatch (the Cairsens continue to measure).
d.
10 minutes later, taken from step a.
The Caircloud, every 15 minutes:
e.
Creation and writing of the configuration files (if modified) in the FTP server.
f.
Copy measurement files to the database and delete from the FTP server.
g.
Processing, analysis and display of measurements in the cloud window.
h.
Waiting for the next sampling.
i.
10 minutes later, taken from step e.
One requirement is that internet access must be available for the PC (tablet or smartphone) and for the Cairnet (for
to read and write to and from the FTP server).
