Development of a High Efficiency DC-DC Converter Using Hysteretic Control for Hydroelectric Energy Harvester in a Wireless Sensor Network

2020 ◽  
Author(s):  
Gennylyn Canacan ◽  
John Thimotee Llanto ◽  
Eala Eireen Moredo ◽  
Adonis S. Santos ◽  
Francis A. Malabanan ◽  
...  
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Energy Harvester ◽  
High Efficiency ◽  
Wireless Sensor ◽  
Hydroelectric Energy ◽  
Hysteretic Control

scholarly journals A Cotton High-Efficiency Water-Fertilizer Control System Using Wireless Sensor Network for Precision Agriculture

Processes ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1693
Author(s):  
Chanchan Du ◽  
Lixin Zhang ◽  
Xiao Ma ◽  
Xiaokang Lou ◽  
Yongchao Shan ◽  
...  
Keyword(s):  
Control System ◽  
Decision Support ◽  
Wireless Sensor Network ◽  
Decision Support System ◽  
Sensor Network ◽  
Support System ◽  
Precision Agriculture ◽  
High Efficiency ◽  
Wireless Sensor ◽  
Sensors And Actuators

Scientific researchers have applied newly developed technologies, such as sensors and actuators, to different fields, including environmental monitoring, traffic management, and precision agriculture. Using agricultural technology to assist crop fertilization is an important research innovation that can not only reduce the workload of farmers, but also reduce resource waste and soil pollution. This paper describes the design and development of a water-fertilizer control system based on the soil conductivity threshold. The system uses a low-cost wireless sensor network as a data collection and transmission tool and transmits the data to the decision support system. The decision support system considers the change in soil electrical conductivity (EC) and moisture content to guide the application of water-fertilizer, and then improves the fertilization accuracy of the water-fertilizer control system. In the experiment, the proposed water-fertilizer control system was tested, and it was concluded that, compared with the existing traditional water-fertilizer integration control system, the amount of fertilizer used by the system was reduced by 10.89% on average, and it could save 0.76–0.87 tons of fertilizer throughout the whole growth period of cotton.

The Group Keyword Management Method of the Heterogeneous WSN Based on Topology

2013 ◽  
Vol 798-799 ◽  
pp. 480-483
Author(s):  
Tao Ma ◽  
Juan Chen
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
High Efficiency ◽  
New Method ◽  
Wireless Sensor ◽  
Batch Method ◽  
Heterogeneous Wireless Sensor Network ◽  
Management Method

The new method used the node to make up the keyword management tree. The keyword management tree was optimized with renewing the group keyword. In the meanwhile, the use of father nodes and the processing batch method improved the keyword renewing efficiency. The analysis result of theory shows that the method is a high efficiency and extendible group keyword management method which used in the heterogeneous wireless sensor network.

Design and optimization of piezoelectric impact-based micro wind energy harvester for wireless sensor network

2015 ◽  
Vol 222 ◽  
pp. 314-321 ◽  
Author(s):  
Hyun Jun Jung ◽  
Yooseob Song ◽  
Seong Kwang Hong ◽  
Chan Ho Yang ◽  
Sung Joo Hwang ◽  
...  
Keyword(s):  
Wireless Sensor Network ◽  
Wind Energy ◽  
Sensor Network ◽  
Energy Harvester ◽  
Wireless Sensor ◽  
Design And Optimization

scholarly journals An Integrated Hybrid Energy Harvester for Autonomous Wireless Sensor Network Nodes

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Mukter Zaman ◽  
H. Y. Wong ◽  
Md. Shabiul Islam ◽  
Nowshad Amin
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Energy Harvester ◽  
Environmental Parameter ◽  
Wireless Sensor ◽  
Secondary Source ◽  
Power Requirement ◽  
Hybrid Energy ◽  
Hybrid Energy Harvester ◽  
Spatially Distributed

Profiling environmental parameter using a large number of spatially distributed wireless sensor network (WSN) NODEs is an extensive illustration of advanced modern technologies, but high power requirement for WSN NODEs limits the widespread deployment of these technologies. Currently, WSN NODEs are extensively powered up using batteries, but the battery has limitation of lifetime, power density, and environmental concerns. To overcome this issue, energy harvester (EH) is developed and presented in this paper. Solar-based EH has been identified as the most viable source of energy to be harvested for autonomous WSN NODEs. Besides, a novel chemical-based EH is reported as the potential secondary source for harvesting energy because of its uninterrupted availability. By integrating both solar-based EH and chemical-based EH, a hybrid energy harvester (HEH) is developed to power up WSN NODEs. Experimental results from the real-time deployment shows that, besides supporting the daily operation of WSN NODE and Router, the developed HEH is capable of producing a surplus of 971 mA·hr equivalent energy to be stored inside the storage for NODE and 528.24 mA·hr equivalent energy for Router, which is significantly enough for perpetual operation of autonomous WSN NODEs used in environmental parameter profiling.

scholarly journals Adaptive security approach for wireless sensor network using RSA algorithm

2021 ◽  
Vol 22 (1) ◽  
pp. 361
Author(s):  
Maha Salah Asaad ◽  
Muayad Sadik Croock
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Ad Hoc ◽  
High Efficiency ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Adaptive Security ◽  
Security Design ◽  
Rsa Algorithm ◽  
Aodv Protocol

A type of distributed and self-regulating network is the wireless sensor network (WSN). The sensor nodes have limited computing capabilities, memory, battery power are needed to ensure a strong security design. In this paper, an adaptive cryptographic scheme for WSN that is operating on routing ad hoc on-demand vector routing (AODV) protocol. The adaptive term refers to the adopted mechanism between heavy and light asymmetric cryptography techniques of RSA. The heavy technique adopts the complete version of RSA algorithm, while the light one considers a reduced complexity version. This is to control the security operation over the included nodes even with low power ratio. In various case studies, the proposed scheme is checked and the result obtained shows the high efficiency of results in terms of protection guarantee.

scholarly journals Optimization of Wireless Sensor Network Architecture with Security System

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Shanshan Wang ◽  
Yun Chen
Keyword(s):  
Immune System ◽  
Wireless Sensor Network ◽  
Sensor Network ◽  
Network Model ◽  
Management System ◽  
Trust Management ◽  
High Efficiency ◽  
System Structure ◽  
Wireless Sensor ◽  
Trust Management System

Wireless sensor network (WSN) is a new type of wireless network. It has many advantages, but there are some problems. These problems make it easier for attackers to analyze network security holes and attack and destroy entire networks. This article designs a security wireless sensor network model. It can resist most known network attacks without significantly reducing the energy power of sensor nodes. First, we cluster the network organization to reduce energy consumption. It also protects the network based on the calculation of trust levels and the establishment of trust relationships between trusted nodes and operates the trust management system based on a centralized method, secondly, on the basis of LEACH agreement, draws lessons from the principle of biological immune system, optimizes the wireless sensor network, and further proposes a new immune system structure suitable for wireless sensor networks. The experimental results show that the wireless sensor network model designed in this paper solves the high-efficiency and energy-saving design task, and the trust management system has satisfactory results in defending against attacks.

Adaptive WSN MAC Protocol Based on Mixing Broadcast

2011 ◽  
Vol 474-476 ◽  
pp. 517-521
Author(s):  
Xin Chen
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
High Efficiency ◽  
Mac Protocol ◽  
High Reliability ◽  
Wireless Sensor ◽  
Data Frame ◽  
Network Layer ◽  
Network Parameters ◽  
Simulation Results

MAC protocol of Wireless Sensor Network (WSN) requires high efficiency to achieve maximum traffic transmission, while pursuit high reliability at the same time. The paper researched on reliable mixing broadcast implementation manner of WSN. Based on analysis on implementation manners of broadcast, unicast and mixing broadcast, a kind of adaptive MAC protocol supporting reliable mixing broadcast was presented. The protocol dynamically select implementation manner with maximum mixing broadcast efficiency based on given network parameters to complete transmission of data frame. Simulation results based on NS2 shows that the protocol has better performance to achieve reliable mixing broadcast, which solve problems of reliable broadcast/multicast at network layer.

Self-Start Piezoelectric Energy Harvesting Circuit With Adjustable UVLO Converter for Wireless Sensor Network

2017 ◽  
Author(s):  
Hyun Jun Jung ◽  
Soobum Lee ◽  
Hamid Jabbar ◽  
Se Yeong Jeong ◽  
Tae Hyun Sung
Keyword(s):  
Wireless Sensor Network ◽  
Energy Harvesting ◽  
Sensor Network ◽  
Energy Harvester ◽  
Impedance Matching ◽  
Wireless Sensor ◽  
Experimental Result ◽  
Piezoelectric Energy Harvesting ◽  
Wireless Sensor Node ◽  
Piezoelectric Energy

This paper proposes a self-start piezoelectric energy harvesting circuit with an undervoltage-lockout (UVLO) converter for a wireless sensor network (WSN). First, a self-start circuit with mini piezoelectric energy harvester (PEH) is designed to supply the power for operation of the oscillator without battery. The experimental results show that a batteryless self-start circuit successfully operates the oscillator with mini-PEH, and self-starting time is 0.45 s. Second, this paper proposes an adjustable UVLO converter that can supply the power even if a power consumption of a wireless sensor node is higher than generated power from PEH. The experimental result shows the adjustable UVLO converter supplies 45 mW for 0.12 s after charging the output power of an impedance matching circuit (1.7 mW) for 10 s. This paper shows that the proposed circuit successfully overcomes challenging issues — self-start and lower power generation — for powering WSN.

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