Unisens
Unisens is a universal data format for multisensor data and their annotations over a common time axis. It was specified for handling bio-signals, but is not limited to it. Unisens was specified by the FZI Research Center for Computer Science and the Karlsruhe Institute of Technology in 2007 and published for the first time in 2008.
construction
A Unisens data record consists of a higher-level metafile in XML format (unisens.xml) and any number of data files. The metafile is linked to the data files via a primary key. The metafile contains all meta information of the individual data files. The data files only consist of the actual (measurement) data. CSV , XML and binary data are specified as file formats .
Comparison with other data formats
In the field of biosignal processing, the data formats EDF + and WFDB (also called MIT format) are very common. The organization in several files makes it very easy to access Unisens data sets, even without a library, as data files can be read in without time-consuming parsing. The same applies to WFDB files, but not to EDF + . In contrast to WFDB, Unisens entries in a data record can have different sampling rates. Adding annotations is easier and more flexible in the Unisens format than with EDF + .