Abstract
A wireless sensor network (WSN) is a wireless network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants, at different locations. During RF transmission energy consumed by critically energy-constrained sensor nodes in a WSN is related to the life time system, but the life time of the system is inversely proportional to the energy consumed by sensor nodes. In that regard, modulated backscattering (MB) is a promising design choice, in which sensor nodes send their data just by switching their antenna impedance and reflecting the incident signal coming from an RF source. Hence wireless passive sensor networks (WPSN) designed to operate using MB do not have the lifetime constraints. In this we are going to investigate the system analytically. To obtain interference-free communication connectivity with the WPSN nodes number of RF sources is determined and analyzed in terms of output power and the transmission frequency of RF sources, network size, RF source and WPSN node characteristics. The results of this paper reveal that communication coverage and RF Source Power can be practically maintained in WPSN through careful selection of design parameters
Highlights
WSN: The development of wireless sensor networks was originally motivated by military applications such as battlefield surveillance [7], [8]
An event field can be covered by a smaller number of RF sources if the communication range of RF sources is increased
The required number of RF sources for effective modulated backscattering-based communication in wireless passive sensor networks (WPSN) is determined in terms of the dimension of the event field, RF communication frequency, and RF output power
Summary
WSN: The development of wireless sensor networks was originally motivated by military applications such as battlefield surveillance [7], [8]. In addition to one or more sensors,each node in a sensor network is typically equipped with a radio transceiver or other wireless communications device, a small microcontroller, and an energy source, usually a battery. The cost of sensor nodes is variable, ranging from hundreds of pounds few pence, depending on the size of the sensor network and the complexity required of individual sensor nodes. The t ra ns c e i ve r of a c onve nt i ona l WSN node is typically a short range RF transceiver. Compared to the other units of the node, the power consumption of the transceiver is considerably high The power unit is a battery. The t ra ns c e i ve r of a c onve nt i ona l WSN node is typically a short range RF transceiver. Compared to the other units of the node, the power consumption of the transceiver is considerably high
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
