Stackd

stackd

MQTT daemon
Publishes exhaust stack radiation monitor readings to MQTT
Language	Python
Hosts	felix-control
Repository	unspecified

stackd reads exhaust stack radiation and exhaust flow values from the Berthold LB5340 multilogger, and combines those to supply current exhaust emission rates. The Archiver logs these to the MySQL database.

MQTT

Publications

topic	meaning
building/stack/servers/hostname_pid	json formatted server daemon information
building/stack/flow	exhaust stack flow in m3/h
building/stack/concentration	exhaust stack concentration in kBq/m3
building/stack/exhaust_rate	the product of flow and concentration in kBq/h
building/stack/concentration/sub_integral	the total exhaust today in kBq
building/stack/concentration/integral	the total exhaust this year in kBq
building/stack/flow/sub_integral	the total volume today in m3
building/stack/flow/integral	the total volume this year in m3
building/stack/date	timestamp (alive signal)

Installation

First, make sure you have set up Feloperator gitlab authentication for the git clone and pip install commands below to work.

# clone the stackd code
cd /opt
git clone https://gitlab.science.ru.nl/felix/stackd.git
cd stackd
chgrp -R fft .
chmod -R 2775 .git
mkdir log run
chmod 2775 log run
python3 -m venv .env
.env/bin/pip install -r requirements.txt

Message Queue Telemetry Transport - a publish-subscribe-based messaging protocol.

Python - a programming language that lets you work quickly and integrate systems more effectively.

server - computer program or a device that provides functionality for other programs or devices, called clients

server - computer program or a device that provides functionality for other programs or devices, called clients

daemon/service - a computer program that runs as a background process