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MARTAS – Real time data acquisition and data transfer |
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Leonhardt, R., Mandl, R., Bailey, R., Kornfeld, R., and Egli, R. |
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Zentralanstalt für Meteorologie und Geodynamik, Wien, Austria |
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MARTAS (MagPy's real time acquisition system) is a Python-based software library to read data from various instruments, locally store/buffer this data on any provided storage medium, and simultaneously broadcast data in real-time based on state-of-the-art IOT (Internet Of Things) techniques for remote usage. MARTAS consists of a core that handles storage, broadcasting, and treatment of data objects, as well as a library that contains communication routines for supported instruments. MARTAS is designed as a universal acquisition routine, running on basically all kinds of hardware, from very lightweight, low-power systems like backbone and raspberry pi, up to full server-grade network integrated computers. MARTAS supports most network environments from single local installations without or with only periodical internet access, towards fully de-centrally organized networks, in which MARTAS permanently broadcasts data to an external broker, which in turn is accessed by an independent data collector. Data broadcasting is performed using the MQTT protocol, supporting handshaking (all quality-of-service levels), authentication and SSL encryption. MARTAS is easy to install, simple to configure and, for developers, easy to extend. A full MARTAS system comes with a UPS, lightning protection, completely independent monitoring based on NAGIOS (www.nagios.org, the industry standard in IT infrastructure monitoring), remote configuration possibilities and web-based graphical visualization of data. All components beyond the MARTAS host hardware are optional. Furthermore, basic collection routines are included. MARTAS can interact with the Python package GeomagPy, which allows for automated processing and analysis. Currently (Summer 2018), MARTAS supports the following geomagnetic instruments (GEM systems GSM19, GSM90 Overhauser, GP20S3 potassium mag., Geometrics G823A Cesium mag, Quantum POS1 Overhauser mag, LEMI L025, L036 and other variometers), data loggers (MinGEO Obsdacq/Palmacq), various other instruments (e.g. METEOLAB BM35 pressure, ENV05 environmental, Theiss Disdrometer, ...) and development/low-cost platforms (DALLAS OneWire, ARDUINO). Data acquisition at the Conrad Observatory as well as in the Austrian geomagnetic network is fully based on MARTAS systems. Public real-time visualization of some selected sensors is accessible at http://cobs.zamg.ac.at within “Live views”. |
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Instrumentation |
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poster |