A Building Energy Management System Based on Facility Sensor Networks

This paper presents the structural review of a building energy management system (BEMS) based on facility sensor networks for each facility in the target building. To make BEMS works, sensors have to be installed for each facility in the target building. Sensors for each facility are connected to the data acquisition device (DAQ) and construct a sensor network. Each DAQ in a facility sensor network is connected to the gateway. Building working information is transferred from the gateway to the BEMS server. The BEMS uses collected data to analyze the building energy usage status and facility efficiencies. Several methods are possible for analyzing building working status based on status data. The easiest method is comparing realtime data to the spec data. Comparing realtime data to the building simulation result is the hardest method. To make BEMS works efficiently, it is possible to design BEMS as a multi-engine based system.