dchvs/qtreadekm

Qt project to read EKM Omnimeters and store responses in a database.

README.md

QtReadEkm

\author Thomas A. DeMay \date 2015

\par Copyright (C) 2015 Thomas A. DeMay

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

A copy of the license can be found in LICENSE.txt in this project and source directory.

This is a Qt Project on Mac OS X Yosemite to read an EKM v.4 meter connected via EKM's "EKM Blink - RS-485 to USB Converter". The EKM Omnimeter Pulse UL v.4 - Pulse has two Basic kWh Meter 14mm 120 volt meters connected to pulse 1 and pulse 2 inputs and a water meter connected to pulse 3 input. One output is used to power a EKM 485Bee and the other controls a relay that switches the rain sensor on a sprinkler timer. The two 120V kWh meters are metering the two phases of the power to a well water system.

The program reads the v.4 meter "A" and "B" data periodically and stores the responses basically un-intrepeted into a MySql database. Since the program can be run indefinitely in the background, special files in the user's home directory are used to signal events to the program. These events are handled when the program would be idle. Because there seems to be a memory leak that I can't find, there is an included shell script to terminate the program and restart it daily.

The Notes.txt file has example SQL for pulling interesting (to me) information out of the database tables.