Arquitetura de dispositivos em rede para medição elétrica não invasiva e monitoramento do consumo de energia
Abstract This paper presents an R & D project, funded by the North Fluminense / Aneel, of a system to monitor energetic efficiency into internal sectors of environments industrial, commercial or domestic. The monitoring system is composed of: sensors modules connected to a serial communication bus; manager module that gathers data from sensors and sends by radio frequency; a coordinator module that receives data pooled from several managers and transfers to the database. The Manager and coordinators can exchange messages by radio antennas MRF24J40MB (range 121 meters) and MRF24J40MA (range 1210 meters) operating in the 2.4 GHz band. At the application layer protocol MiWi P2P (Microchip), have been created routing methods allowing to set network nodes in tree or mesh topologies. Compared to usual solutions based on wireless sensor networks with Zigbee protocol, the hybrid network topology and the MiWi P2P protocol allows measurements in environments with restrictions on radio link, simplifies the hardware and reduces the transceiver antennas. The grouping of data in manager’s modules allows a reduced exchange of messages, increased throughput of payload per packet and infrastructure reliability. Keywords Power Monitoring Systems, Energy Efficiency, Network Topologies, WSN (Wireless Sensor Network), Radio Frequency Transceivers, Communication Protocols, Electrical Measurements Instrumentation. Resumo Este artigo apresenta um projeto de P&D, financiando pela Norte