Measurement data collecting into databases from KNX systems

In large, KNX automated buildings there are unavoidable to measure environmental factors, such as outside temperature, inside temperatures, set point temperatures, Lux levels, human behaviors (e.g. pressing a button, open the door/window, enter/leave building areas etc.). This paper shows various methods of data collecting from a KNX network into databases. KNX manufacturers provide different solutions of catch measured values, record them and save them in databases. After the database is created, the popular technique - data mining can use to get unknown information from the database, from the measured values.