Design of a data acquisition system for building electrical fault diagnosis

Along with the rapid development of information technology, an increasing number of data need to be collected from the building electrical system. Therefore, it is critical to design a data acquisition system can be directly integrated with the existing building control system. In this paper, we concentrate on the research of fault diagnosis data collection. We design a MODBUS based data acquisition system to collect the fault signals involving current, voltage and harmonic, which can provide real-time and accurate fault data for the analysis and calculation in the building electrical fault diagnosis system.