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With the continuous progress of rural construction, the problem of rural drinking water pollution is increasingly prominent. In view of water pollution, a design of rural drinking water monitoring system based on wireless sensor networks is proposed that nodes take STM32 as the core chip and WLK01L39 as well as its peripheral circuits are used as wireless communication modules and Beidou S1216 is...
Wireless sensor network is composed of many wireless sensor nodes with the same or different functions. A typical sensor node consists of four parts: sensor unit, information processing unit, wireless communication unit and energy supply unit. In this paper, the existing ant colony algorithm is analyzed, and an improved ant colony optimization algorithm is proposed. The paper presents design of routing...
Link quality protocols employ link quality estimators to collect statistics on the wireless link either independently or cooperatively among the sensor nodes. Furthermore, link quality routing protocols for wireless sensor networks may modify an estimator to meet their needs. Link quality estimators are vulnerable against malicious attacks that can exploit them. A malicious node may share false information...
Aiming at the defects of traditional manual operation and wiring of the traditional lighting system, this paper puts forward a design scheme of LED lighting control system based on ZigBee wireless sensor network technology. With the change of the environment parameters and the preset lighting mode, the system can respond quickly and automatically, and realize the PWM linear non-polar dimming. Based...
Wireless sensor networks (WSNs) consist of energy limited sensor nodes, which limits the network lifetime. Such a lifetime can be prolonged by employing the emerging technology of wireless energy transfer (WET). In WET systems, the sensor nodes can harvest wireless energy from wireless charger, which can use energy beamforming to improve the efficiency. In this paper, a scenario where dedicated wireless...
The successful deployment of low-power wireless sensor networks (WSNs) in real application environments is a much broader exercise than just the simple instrumentation of the intended monitoring site. Many problems, from node malfunctions to connectivity issues, may arise during commissioning of these networks. These need to be corrected on the spot, often within limited time, to avoid undesired delays...
Underwater Wireless Sensor Network (UWSN) is newly emerged and developed branch of Wireless sensor technology. In UWSN small sensor nodes with limited battery and limited memory are deployed in underwater environment. Due to multiple differences from terrestrial Wireless Sensor Networks (WSN), radio waves cannot be used in underwater communication. Acoustic channels are used for communication in sea...
The widespread deployment of wireless sensor networks (WSNs) in diverse types of applications motivated the development of strong security measures to protect these networks. The main challenge against deploying strong security algorithms is that WSNs suffer from major constraints in terms of power and computing resources. WSNs impose a primary condition on the design stage that requires any protocol...
Network coding technique based wireless sensor network for environmental monitoring is described here. The network coding is implemented in CC2530 microcontroller and the performance of wireless sensor network is evaluated by analyzing packet delivery ratio (PDR) and packet error rate (PER). It is observed that the resources can be shared among the nodes with minimum number of transmission and repetition...
Machine-to-Machine (M2M) communication is an emerging paradigm for the next generation of sensing and actuating systems. Energy harvesting technologies applied in sensor and actuator devices must be considered by the communication solutions in order to achieve energy-efficient M2M communication. This paper addresses the problem of regulating the energy consumption in accordance with the harvested...
This paper describes a special class of Wireless Sensor Networks (WSN), called Linear WSN (LWSN), where nodes are deployed along narrowly stretched geographical areas and form a linear topology. LWSNs are characterized by sparse node deployment, long transmission distances and alignment of nodes a long a virtual line. This range of characteristics introduces new challenges, which makes solutions proposed...
In association with recent advancement in wireless communications as well as penetration of wireless devices with sensing, computation and wireless communication capabilities, the wireless sensor networks have become an important research area due to their potential for providing cheap and flexible solutions to data monitoring and device actuation. And, many studies have analyzed routing effectiveness...
Industrial Wireless Sensor Networks (IWSNs) are becoming increasingly popular and many recent papers addressed their unique technical and research challenges [1]. Analyzing the product portfolio of leading manufacturers the following IWSN standards prominently emerge: WirelessHART [2] and ISA100 Wireless [3]. In both standards low power wireless communications are based on Time Division Channel Access...
The consumption of energy in wireless sensor network is an important criterion. The sensor nodes play an important role in wireless sensor networks. The sensor nodes communicate with other nodes within the short distance via wireless medium. The sensor nodes are placed in the static places or Region of Interest (ROI). The sensor nodes are used to sense the desired physical parameters and they send...
Wireless Industrial Automation Networks may comprise large number of sensors and actuators which are densely deployed in various parts of an industry to monitor and control physical parameters like pressure, temperature, humidity, flow, level, density etc.by utilizing IEEE 802.15.4 standard. Typically, a sensor node consists of sensing subsystem for data acquisition, processing subsystem for data...
Wireless sensor networks consist of spatially distributed sensor nodes, which can sense the environment by collecting, processing and transmitting the data to sink node. A critical issue in wireless sensor networks since most sensors is equipped with non-rechargeable batteries. The lifetime of a sensor network can be extended by jointly applying different techniques of scheduling and routing schemes...
Wireless multiple blasts like sybil blast, worm hole blast, black hole blast, Internet Protocols address faking blast and Mac address faking blast are easy to launch and can significantly impact the performance of networks. Although the identity and security of a node can be verified through various security mechanisms are not always suitable to improve the wireless network performance and fault node...
Linear wireless sensor networks (LWSN) are special class of wireless sensor networks where sensor nodes are deployed in a straight line. Monitoring industrial pipelines, railroads, tunnels, power lines, and borders are applications of LWSNs. Wireless sensors are tiny devices with limited energy resources; therefore, efficient energy routing in LWSNs is critical. In this paper, we propose energy-efficient...
An architecture of underwater sensor networks and a two-tier routing protocol for cluster-based underwater heterogeneous sensor networks-TTCB protocol have been proposed in this paper. The architecture includes the upper sensor nodes, the lower sensor nodes, sink node on the sea surface and the base stations on the land. All sensor nodes form two heterogeneous clustering structure. According to the...
In real life, random wireless sensor network is very common, such as network of monitoring nodes in rural anti-theft system and as well as in agriculture-forestry environmental monitoring, and so on. Large-scale network, intensive nodes and disorganized distribution are the features of this network. If we transmit data by point-to-point method on such a network, then there exist disadvantages of large...
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