• Title/Summary/Keyword: Battery-based sensor system

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Table-based Effective Estimation of Residual Energy for Battery-based Wireless Sensor System (배터리기반 무선 센서시스템을 위한 테이블기반 잔여 에너지양 추정기법)

  • Kim, Jae-Ung;Noh, Dong-Kun
    • Journal of the Korea Society of Computer and Information
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    • v.19 no.9
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    • pp.55-63
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    • 2014
  • Up to date, numerous studies on wireless sensor networks have been performed to overcome the Energy-Constraint of the sensor system. Existing schemes for estimating the residual energy have considered only voltage of sensor system. However battery performance in the real is affected by temperature and load. In this paper we introduce more accurate scheme, for the use in wireless sensor node, based on the interpolation of lookup tables which allow for temperature and load characteristics, as well as battery voltage.

Estimation of State-of-charge and Sensor Fault Detection of a Lithium-ion Battery in Electric Vehicles (전기자동차용 리튬이온전지를 위한 SOC 추정 및 센서 고장검출)

  • Han, Man-You;Lee, Kee-Sang
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.8
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    • pp.1085-1091
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    • 2014
  • A model based SOC estimation scheme using parameter identification is described and applied to a Lithium-ion battery module that can be installed in electric vehicles. Simulation studies are performed to verify the effect of sensor faults on the SOC estimation results for terminal voltage sensor and load current sensor. The sensor faults should be detected and isolated as soon as possible because the SOC estimation error due to any sensor fault seriously affects the overall performance of the BMS. A new fault detection and isolation(FDI) scheme by which the fault of terminal voltage sensor and load current sensor can be detected and isolated is proposed to improve the reliability of the BMS. The proposed FDI scheme utilizes the parameter estimation of an input-output model and two fuzzy predictors for residual generation; one for terminal voltage and the other for load current. Recently developed dual polarization(DP) model is taken to develope and evaluate the performance of the proposed FDI scheme. Simulation results show the practical feasibility of the proposed FDI scheme.

Design and Implementation on High Efficient EPMS(Energy-Power Management System) for USN Sensor Node Using Self-Charging Module (자가 충전 모듈을 이용한 USN 센서노드용 고효율 에너지 전력관리 시스템 구현 및 검증)

  • Kim, Hyun-Woong;Park, Hee-Jeong;Lim, Se-Mi;Oh, Jong-Hwa;Roh, Hyoung-Hwan;Park, Jun-Seok
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.1
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    • pp.124-130
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    • 2011
  • In this paper, We design and implementation of Self-Charging Module for charging to battery which obtaining the environment inergy such as solar energy. The power chared battery through the charging module send to sensor node. And implementation of System Activation Module(SAM) based on ID system and Dynamic Power Management Module(DPM) with SPO(Self Power Off). This system consume power only communication between the sensor nodes. We verification this system by implementing the high efficiency poweer management system.

Energy Efficient Routing Protocol Based on PEGASIS in WSN Environment (WSN 환경에서 PEGASIS 기반 에너지 효율적 라우팅 프로토콜)

  • Byoung-Choul Baek;Tae-Wook Kwon
    • The Journal of the Korea institute of electronic communication sciences
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    • v.18 no.4
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    • pp.579-586
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    • 2023
  • A wireless sensor network (WSN) has limited battery power because it is used wirelessly using low-cost small sensors. Since the battery cannot be replaced, the lifespan of the sensor node is directly related to the lifespan of the battery, so power must be used efficiently to maximize the lifespan of the network. In this study, based on PEGASIS, a representative energy-efficient routing protocol, we propose a protocol that classifies layers according to the distance from the sink node and configures multiple chains rather than one chain. The proposed protocol can increase network lifespan by reducing the transmission distance between nodes to prevent unnecessary energy consumption.

Vehicle Speed Measurement System based on Wireless Sensor Network (무선 센서네트워크 기반 차량속도 측정 시스템)

  • Yoo, Seongeun;Kim, Taehong;Park, Taisoo;Kim, Daeyoung;Shin, Changsub;Sung, Kyungbok
    • IEMEK Journal of Embedded Systems and Applications
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    • v.3 no.1
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    • pp.42-48
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    • 2008
  • The architecture of WSN based Vehicle Speed Measurement System is presented in this paper from Telematics Sensor Network(TSN) to Management System. To verify the feasibility of the system, we implemented the vehicle speed measurement system and evaluated the accuracy of velocity measured by the system in our testbed, an old highway located near Kyungbu highway. The system performed over 95% of accuracy at 80kmph from the measurement. In addition, the battery life time of the sensor node was evaluated by simulation analysis with real measured current consumption profiles. Assuming the maximum average daily traffic in 2005, the battery life time is expected to be over 1.6 year from the simulation result.

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Energy-Efficient Quorum-Based MAC Protocol for Wireless Sensor Networks

  • Annabel, L. Sherly Puspha;Murugan, K.
    • ETRI Journal
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    • v.37 no.3
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    • pp.480-490
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    • 2015
  • The reliability of sensor networks is generally dependent on the battery power of the sensor nodes that it employs; hence it is crucial for the sensor nodes to efficiently use their battery resources. This research paper presents a method to increase the reliability of sensor nodes by constructing a connected dominating tree (CDT), which is a subnetwork of wireless sensor networks. It detects the minimum number of dominatees, dominators, forwarder sensor nodes, and aggregates, as well as transmitting data to the sink. A new medium access control (MAC) protocol, called Homogenous Quorum-Based Medium Access Control (HQMAC), is also introduced, which is an adaptive, homogenous, asynchronous quorum-based MAC protocol. In this protocol, certain sensor nodes belonging to a network will be allowed to tune their wake-up and sleep intervals, based on their own traffic load. A new quorum system, named BiQuorum, is used by HQMAC to provide a low duty cycle, low network sensibility, and a high number of rendezvous points when compared with other quorum systems such as grid and dygrid. Both the theoretical results and the simulation results proved that the proposed HQMAC (when applied to a CDT) facilitates low transmission latency, high delivery ratio, and low energy consumption, thus extending the lifetime of the network it serves.

Study on MPPT controller using limit cycle (리미트 사이클을 이용한 MPPT 제어기에 대한 연구)

  • Kang Taekyung;Koh Kanghoon;Kwon Soonkurl;Suh Kiyoung;Nakaoka Mutsuo;Lee Hyunwoo
    • 한국신재생에너지학회:학술대회논문집
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    • 2005.06a
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    • pp.160-163
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    • 2005
  • This paper proposes a simple MPPT control scheme of a Current-Control-Loop Error system Based that can be obtains a lot of advantage to compare with another digital control method, P&O and IncCond algorithm, that is applied mostly a PV system. An existent method is needed an expensive processor such as DSP that calculated to change the measure power of a using current and voltage sensor at the once. Therefore, it is applied a small home power generation system that required many expenses. But, a proposed method is easy to solve the cost reduction and power unbalance problems that it is used by control scheme to limit error of a current control of common sensor. This proposed algorithm had verified through a simulation and an experiment on battery charger using PIC that is the microprocessor of a low price.

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Design and Implementation of Fully Automated Solar Powered Irrigation System

  • Mohammad Fawzi Al Ajlouni;Essam Ali Al-Nuaimy;Salman Abdul-Rassak Sultan;Ali Hammod AbdulHussein Twaij;Al Smadi Takialddin
    • International Journal of Computer Science & Network Security
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    • v.24 no.4
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    • pp.197-205
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    • 2024
  • This paper presents a fully automated stand-alone irrigation system with GSM (Global System for Mobile Communication) module. Solar energy is utilized to power the system and it is aimed to conserve water by reducing water losses. The system is based on a DC water pump that draws energy from solar panels along with automated water flow control using a moisture sensor. It is also fitted with alert and protection system that consists of an ultrasonic sensor and GSM messages sender that transmits signals showing the levels of the water in the reservoir and the battery charge. The control system is designed to stop the water pump from pumping water either when the battery level drops to equal or less than 10% of its full charge, or when the water level becomes less than 10 cm high in the reservoir. The experimental results revealed that the system is appropriate to use in remote areas with water scarcity and away from the national grid.

Battery-less Pork Freshness Monitoring Based on High-Efficiency RF Energy Harvesting

  • Nguyen, Nam Hoang;Lam, Minh Binh;Chung, Wan-Young
    • Journal of Sensor Science and Technology
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    • v.29 no.5
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    • pp.293-302
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    • 2020
  • Food safety has emerged as a growing concern for human health in recent times. Consuming contaminated food may lead to serious health problems, and therefore, a system for monitoring food freshness that is both non-detrimental to the quality of food and highly accurate is required to ensure that only high-quality fresh food packages are provided to the customers. This paper proposes a method to monitor and detect food quality using a compact smart sensor tag. The smart tag is composed of three ultra-low-power sensors, which monitor four major indicators of food freshness: temperature, humidity, and the concentrations of ammonia and hydrogen sulfide gases. An RF energy scavenging circuit is integrated into the smart sensor tag to harvest energy from radio waves at a high frequency of 13.56 MHz to supply sufficient power to the tag. Experimental results show that the proposed energy harvester can efficiently obtain energy at a distance of approximately 40 cm from a 4 W reader. In addition, the proposed smart sensor tag can operate without any battery, thereby eliminating the requirement of frequent battery replacement and consequently decreasing the cost. Meanwhile, the freshness of preserved pork is continuously monitored under two conditions--room temperature and refrigerator temperature--both of which are the most common temperatures under which food is generally stored. The food-monitoring experiments are conducted over a period of one week using the proposed battery-less tag. Based on the experimental results, the food assessment is classified into four categories: fresh, normal, low, and spoiled.

RLSE Based Batteryless Telemetry Capacitive Sensor System

  • Lee, Joon-Tark;Kim, Kyung-Yup
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 2003.09a
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    • pp.318-321
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    • 2003
  • In case, sensor system performs where it is difficult to access physically and it is in the poor environment, it is limited to communicate by using wire and installing power module in sensor system. In this paper, it suggests how information is obtained from telemetry sensor by means of inductive coupling without battery. Comparing with the telemetry sensor system of inductive coupling by the power supply, this system estimates the capacitance of sensor with high precision in using RLSE, not the process of modulation and demodulation. In order to activate this system, inductive model is used and in case of time variant parameter, telemetry sensor system which has got high rate in accuracy is implemented by using the forgetting factor.

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