imported>Ken at 21:41, 6 July 2007

2007-07-06T21:41:26Z

New page

=overview of data-gathering software=

Campbell Scientific's CR10 family of dataloggers has been heavily used by WERC
and many other research groups for years. Though now superseded by the CR1000
line of loggers, the CR10 line will likely be in service for years to come.

The CR10 loggers were provided with complete documentation, both for developing
the datalogging programs themselves and for interfacing with other systems via
serial communications. At WERC, we used this documentation to develop code in
the Perl programming language for ''talking to'' these datalogging systems, with
connections via serial radios (FreeWave) and the Internet.

Note that Campbell provides the LoggerNet (formerly PC208 and other)
programs to interface dataloggers to PCs; WERC's Campbell::Comm and related
programs serve a more limited function than LoggerNet/PC208, being primarily
concerned with reliably downloading data and checking/setting the time.

WERC's code is posted online at http://www.uaf.edu/water/staff/irving/csi-code/,
including a [http://www.uaf.edu/water/staff/irving/csi-code/readme README] file.
This system has been in use for several years, downloading data from up to 50
remote loggers hourly in several different radio networks.

This code has not been packaged for distribution, or automatic
installation, but it is intended to be available under the GNU Public
License (GPL).

Technical descriptions of the primary components follow...

Note that this Perl code has been written, tested, and run only on Linux
computers; Perl itself is very portable across platforms, but porting
problems (e.g,. to Windows OS family) might be encountered in such areas
as process management (fork, exec), ''alarm'' timing, and possibly others.

Src-perl-Campbell::Comm-overview - Revision history

imported>Ken at 21:41, 6 July 2007