Ultra-Wide-Band Wireless Sensor Network for Transmission of Streaming Data

An innovative wireless sensor network (WSN) based on Ultra-Wide Band (UWB) technology for 3D accurate superficial monitoring of ground deformations, as landslides and subsidence, is proposed. The system has been designed and developed as part of an European Life+ project, called Wi-GIM (Wireless Sensor Network for Ground Instability Monitoring). The details of the architecture, the localization via wireless technology and data processing protocols are described. The flexibility and accuracy achieved by the UWB two-way ranging technique is analysed and compared with the traditional systems, such as robotic total stations (RTSs), Ground-based Interferometric Synthetic Aperture Radar (GB-InSAR), highlighting the pros and cons of the UWB solution to detect the surface movements. An extensive field trial campaign allows the validation of the system and the analysis of its sensitivity to different factors (e.g., sensor nodes inter-visibility, effects of the temperature, etc.). The Wi-GIM system represents a promising solution for landslide monitoring and it can be adopted in conjunction with traditional systems or as an alternative in areas where the available resources are inadequate. The versatility, easy/fast deployment and cost-effectiveness, together with the good accuracy, make the Wi-GIM system a possible solution for municipalities that cannot afford expensive/complex systems to monitor potential landslides in their territory.

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Evaluasi Karakteristik XBee Pro dan nRF24L01+ sebagai Transceiver Nirkabel

ELKOMIKA Jurnal Teknik Energi Elektrik Teknik Telekomunikasi & Teknik Elektronika ◽

10.26760/elkomika.v4i1.83 ◽

2018 ◽

Vol 4 (1) ◽

pp. 83

Author(s):

BURHAN FAJRIANSYAH ◽

MUHAMMAD ICHWAN ◽

RATNA SUSANA

Keyword(s):

Wireless Sensor Network ◽

Sensor Network ◽

Digital Transmission ◽

Data Rate ◽

Streaming Data ◽

Wireless Sensor ◽

Brick Wall ◽

Transceiver Module ◽

The Right ◽

Research Author

ABSTRAKPemillihan modul transciever sebagai media transmisi data digital menjadi permasalahan bagi perancang ketika mendesain suatu sistem komunikasi nirkabel. Pada penelitian ini penulis melakukan evaluasi pada dua modul transceiver yaitu XBee Pro dan nRFf24L01+ dengan tujuan untuk menentukan modul transceiver mana yang tepat digunakan untuk kebutuhan perancangan sistem Wireless Sensor Network (WSN). Evaluasi dilakukan dengan mengirimkan data dalam bentuk karakter ASCII/ bytes secara kontinyu maupun sekuensial melalui komunikasi serial UART. Pada pengaturan untuk mode data rate 250 Kbps, XBee Pro memiliki data rate 27 Kbps dan nRF24L01+ 16 Kbps untuk protokol komunikasi serial UART. Modul nRF24L01+ lebih unggul dalam mengirimkan data secara streaming (kontinyu) dibandingkan Xbee Pro, dan nRF24L01+ memiliki Round Time Trip (RTT) tercepat 0,003 sekon sedangkan XBee Pro hanya 0,036sekon. Pada aplikasi dalam ruangan XBee Pro memiliki performa lebih tinggi karena lebih stabil dalam transmisi dengan hambatan 4 dinding sedangkan nRF24L01+ hanya 2 dinding.Kata kunci: UART, Data Rate, Nirkabel, XBee Pro, nRF24L01+. ABSTRACTChosing transciever module as a media for a digital transmission data has becoming a serious problem for a designer to design a wireless communication system. In this research, author do the evaluation for a two transceiver module that are XBee Pro and nRF24L01+, the purpose is to chose which the right transceiver module that designer need to make a Wireless Sensor Network (WSN) system. The evaluation was done by sending a data in ASCII character/ bytes as continuous and sequensial method using serial communication UART. When data rate is set to 250 Kbps mode, XBee Pro data rate is 27 Kbps and nRF24L01+ 16Kbps for serial communicaton UART purpose. nRF24L01+ is better at sending a streaming data (continuous) than XBee Pro, and also nRF24L01+ has a fastest Round Time Trip (RTT) that are 0,003 sec while XBee Pro only 0,036 sec. For indoor application XBee Pro has a better perform because it work better until 4 brick wall while nRF24L01+ only 2 brick wall.Keyword: UART, Data Rate, Wireless, XBee Pro, nRF24L01+.

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Semantic Ids Using Wireless Sensor Network

International Journal of Applied Research in Mechanical Engineering ◽

10.47893/ijarme.2011.1005 ◽

2011 ◽

pp. 20-25

Author(s):

K. Sri Ganesh ◽

V. Vaideh ◽

M. Raja Sekar

Keyword(s):

Wireless Sensor Network ◽

Sensor Network ◽

Time Domain ◽

Streaming Data ◽

Wireless Sensor ◽

Surveillance Systems ◽

Coverage Area ◽

Rule Based ◽

Sensory Data ◽

Monitoring Application

Emerging technologies have metamorphosed the nature of surveillance and monitoring application, but the sensory data collected using various gadgets still remain changeable and poorly synchronized. An event detected by WSN formulates patterns. The sink receives the information about several events happening in the coverage area. Sink has to correlate these streaming data (events) in spatial domain (several sensors) and time domain. This paper proposes a scheme to formulate patterns based on sensing elements and a methodology for detecting an intruder using rule-based semantics. This scheme can be integrated with the surveillance systems to detect the entry of an unauthorized person into a secured area. Real Time implementations prove that events, patterns, rules can efficiently detect an intruder with the help of a wired network with appropriate database. The semantic rules are developed using ANTLR tool.

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