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The LonWorks technology is now wildly used in buildings, industrial facilities and many other fields. Its interoperability and reliability have been proven extremely robust. The Pyxos, the LonWorks platform's bottom network, extends the LonWorks into I/O buses and sensors networks. The paper mainly talks about the reliability of the Pyxos network. Firstly, the LonWorks and Pyxos technologies are viewed...
The Cognitive Radio (CR) technology enables the unlicensed users to share the spectrum with the licensed users on a non-interfering basis. Spectrum sensing is an important function for the unlicensed users to determine availability of a channel in the licensed user's spectrum. However, spectrum sensing consumes considerable energy which can be reduced by employing predictive methods for discovering...
Based on conventional droop control scheme, a novel active and reactive power sharing method is proposed for parallel operation of 400-Hz inverters. Compared with the existing methods, the proposed solution employs the single-loop resonant controller which ensures good voltage regulation. Moreover, the feedback sensors of the output currents are also removed by implementing it in a software routine,...
PZT fibrous material has many important applications in sensors, actuators and transducers. In this paper, piezoelectric fibers had been fabricated by carbon template method using lead acetate trihydrate, zirconium nitrate pentahydrate , titanium butoxide as raw materials, and glycol monomethyl ether as the organic solvent. In addition, 1-3 piezoelectric composite had been prepared by arranging PZT...
The energy of node in Wireless Sensor Networks (WSN) is severely constrained, it is very important to maximize the network lifetime by reducing the data dissemination among the nodes. In order to enhance energy efficiency and prolong the system lifetime, a novel data gathering algorithm based on mutual supportability and grey prediction is presented. According to of nodes' the historical data, cluster...
Data fusion techniques can combine data and related information to achieve more accurate and reliable data. However, data fusion is not considered in ZigBee protocol, which also limits the range of application of ZigBee protocol. This paper discusses data fusion algorithms in ZigBee application layer and radio frequency communication times are remarkably reduced with the help of data fusion algorithms...
The paper introduces a real-time monitoring system for in-patient. The system is made up of two sub-systems: patient physical states data acquisition and communication system based on Zigbee technology, and hospital monitoring and control centre. The patient physical states data acquisition and communication system monitors the main physical parameters and movement status continuously. The information...
In this paper a novel algorithm for detecting voltages of capacitors of cascade shunt active power filter (CSAPF) is presented based on Carrier Phase Shift-SPWM (CPS-SPWM). This work is motivated by the fact that the number of voltage sensors is largely increased by CSAPF with cascade topology which has been put into practical use for years especially in high voltage and high power drivers. Following...
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