Considerações sobre o consumo de energia dos nós sensores das redes de área pessoal sem fio que usam o protocolo MiWi
DOI:
https://doi.org/10.18046/syt.v13i34.2093Palavras-chave:
Redes de sensores sem fios, estado de repouso/inatividade, consumo de energia, padrão IEEE 802.15.4, protocolo MiWi.Resumo
A adoção de técnicas para aumentar o tempo de operação de nós sensores movidos a bateria é necessária para implementar aplicações práticas de monitoramento concebidas para operar por longos períodos de tempo. A captação de energia, as técnicas de conversores dc-dc e as características dos microcontroladores modernos, como consumo extremamente baixo, estados de repouso e inatividade, podem contribuir para melhorar o desempenho dos nós da rede. Os desenhadores também podem apoiar-se nas possibilidades oferecidas pelos protocolos especiais usados nas redes de sensores sem fio, algoritmos de roteamento e estratégias de aquisição e agregação de dados. Apresentam-se neste artigo aspectos relacionados com a concepção e implementação de um nó energeticamente eficiente operando sob o protocolo MiWi da Microchip conforme o padrão IEEE 802.15.4. Foram realizados testes operacionais com diferentes cenários de hardware / firmware, com o objetivo de verificar as alterações no desempenho dos nós, dependendo da configuração adotada.Referências
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Traco Power. (2012). DC / DC converters TSR-1 series. Retrieved from: http://www.tracopower.com/products/tsr1sm.pdf
Fairchild Semiconductor. (1997). 2N7000 N-Channel Enhancement Mode Field Effect Transistor. Retrieved from: https://www.fairchildsemi.com/products/discretes/fets/mosfets/2N7000.html
Fraser, M., Elgamal, A., He, X., & Conte, J. (2009). Sensor network for structural health monitoring of a highway bridge. Journal of Computing in Civil, 24(1), 11–24. Available at http://ascelibrary.org/doi/abs/10.1061/(ASCE)CP.1943-5487.0000005
Gargiulo, M., Guerriero, P., Daliento, S., Irace, A., D’Alessandro, V., Crisci, M., Smarrelli, M. (2010). A novel wireless self-powered microcontroller-based monitoring circuit for photovoltaic panels in grid-connected systems. In SPEEDAM 2010 - International Symposium on Power Electronics, Electrical Drives, Automation and Motion (pp.164-168). doi:10.1109/SPEEDAM.2010.5542234
Microchip Technology Inc. (2004). PIC18F2525/2620/4525/4620 Data sheet enhanced flash microcontrollers with 10-Bit A / D and nanowatt technology. Retrieved from: http://www.tme.eu/es/Document/367303b6b4e89b4a2fc1a86def563d0b/PIC18F4620-I_P.pdf
Microchip Technology Inc. (2008). MRF24J40MA data sheet. Retrieved from: http://ww1.microchip.com/downloads/en/DeviceDoc/70329b.pdf
Microchip Technology Inc. (2009). Microchip wireless (MiWi) application programming interface - MiApp. Retrieved from: http://www.microchip.com/wwwAppNotes/AppNotes.aspx?appnote=en544039
Microchip Technology Inc. (2010a). Microchip MiWi P2P wireless protocol. Retrieved from: http://ww1.microchip.com/downloads/en/AppNotes/01204B.pdf
Microchip Technology Inc. (2010b). Microchip MiWi wireless networking protocol stack. Retrieved from http://ww1.microchip.com/downloads/en/AppNotes/AN1066%20-%20MiWi%20App%20Note.pdf
Microchip Technology Inc. (2011). ZENA TM wireless adapter user’s guide. Retrieved from http://www.microchip.com/DevelopmentTools/ProductDetails.aspx?PartNO=AC182015-1
Microchip Technology. (2009). Microchip wireless (MiWiTM) media access controller – MiMAC. Retrieved from: http://www.microchip.com/wwwAppNotes/AppNotes.aspx?appnote=en544032
Otniel Portillo-Rodríguez, Jessica C. Alcaide-Barragán, Oscar O. Sandoval González, Adriana H. Vilchis-Gonzalez, Juan Carlos Ávila-Vilchis, M. R.-H. (2011). A framework to develop reliable low cost wireless sensors networks using the IEEE 802.15.4 standard [paper in IEEE 22a Reunión Internacional de Otoño, de Comunicaciones, Computación, Electrónica, Automatización, Robótica y Exposición Industrial ROC&C’2011, Acapulco. (pp. 5-10).
Pannila, E., Tuominen, A., & Edirisinghe, M. (2011). Gas sensor data collection over an RF network. In Proceedings of the Technical Sessions - IPSL, 27, 92-99. Colombo, Sri Lanka: Institute of Physics Sri Lanka.
Powering microcontrollers with scavenged energy | DigiKey. (2012, 08/22). Retrieved from: http://www.digikey.com/es/articles/techzone/2012/aug/powering-microcontrollers-with-scavenged-energy
ST. (2013). LD1117 Adjustable and Fixed Low-Dropout Voltage
Regulator. Retrieved from: http://www.ti.com/lit/ds/symlink/tlv1117-50.pdf
Traco Power. (2012). DC / DC converters TSR-1 series. Retrieved from: http://www.tracopower.com/products/tsr1sm.pdf
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2015-09-30
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Original Research
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Esta publicação está licenciada sob os termos da licença CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/deed.pt_BR).
