Results 121 to 130 of about 42,493 (254)
Leakage protection system of underground power grid based on ZigBee wireless sensor network
Gong-kuang zidonghua, 2014 In view of shortcomings such as poor reliability, high error rate existed in current leakage protection system of underground high-voltage power grid，a design scheme of leakage protection system of underground power grid based on ZigBee wireless sensor ...
ZHU Yankai +4 more
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Aviation Electronics, Information Technology, Telecommunications, Electricals, ControlsEnhancing internet accessibility on campus is vital for both academic purposes and general internet usage. This research aims to expand the outdoor Wi-Fi coverage at Telkom University, taking into account wireless signal propagation, infrastructure, and ...
Rayhan Sidiq Kaffa +4 more
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RSSI-based Algorithm for Indoor Localization
Communications and Network, 2013 Wireless node localization is one of the key technologies for wireless sensor networks. Outdoor localization can use GPS, AGPS (Assisted Global Positioning System) [6], but in buildings like supermarkets and underground parking, the accuracy of GPS and even AGPS will be greatly reduced.
Xiuyan Zhu, Yuan Feng
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Iterative Positioning Algorithm for Indoor Node Based on Distance Correction in WSNs
Sensors, 2019 Node position information is critical in wireless sensor networks (WSN). However, existing positioning algorithms commonly have the issue of low positioning accuracy due to noise interferences in communication.
Jing Chen +4 more
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Multi-rate relaying for performance improvement in IEEE 802.11 WLANs [PDF]
, 2007 It is well known that the presence of nodes using a low data transmit rate has a disproportionate impact on the performance of an IEEE 802.11 WLAN. ORP is an opportunistic relay protocol that allows nodes to increase their effective transmit rate by ...
Cetin, Bilge +5 more
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Fault-tolerant localization method for underground mine based on wireless sensor network
矿业科学学报, 2017 This paper described a wireless-sensor-network based monitoring and positioning system for underground mine.This system regards the condition of ensuring the function of positioning as the basic requirements and uses reasonable fault-tolerant mechanism ...
Liu Xiaoyang, Liang Tao, Hu Qiaosen
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Discrete Dynamics in Nature and Society, 2020 This paper studies the security location mechanism of the sensor network node under the attack of Sybil and analyzes the safe attacks which are possibly accepted and safe requirement in the location system. Since RSSI (Received Signal Strength Indicator)
Hongbin Wang, Liping Feng
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BarekengIncreasing life expectancy has resulted in a growing elderly population, making neurodegenerative conditions such as dementia a major global health issue.
Hani Rubiani +4 more
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Studies in Science and Technology, 2018 Recently, many libraries have introduced a UHF-band RFID tag system because of its convenience. However, the UHF-band RFID reader has wide coverage area and this can reduce the management efficiency by unintentionally reading unnecessary tags.
Yusuke Kajiwara +2 more
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INDOOR POSITIONING WITH BLUETOOTH LOW ENERGY AND EXTENDED KALMAN FILTER
Електроніка та інформаційні технологіїBackground. Indoor positioning systems based on Bluetooth Low Energy (BLE) beacons widely rely on estimating distance using the received signal strength indicator (RSSI).
Tadei-Nazarii Kalynchuk
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