Wireless Sensor Network: At a Glance (original) (raw)

An Introduction to the Wireless Sensor Network (WSN)

2012

This article provides an overview of wireless sensor networks, their architecture, application areas, and some open research issues. This article is submitted to the G. H. Raisoni College of Engineering and Management as a part of partial fulfilment for the award of the degree of Master of Engineering in Electronics and Telecommunication (VLSI and Embedded Systems Design) of the University of Pune in the academic year 2011-2012. Wireless sensors and wireless sensor networks have recently come to the forefront of the scientific community. This results from the increasingly smaller-sized devices being engineering, enabling many applications. The use of these sensors and the possibility of organizing them into networks have revealed many research issues and have highlighted new ways to cope with specific problems. A wireless sensor network is a collection of nodes organized into a cooperative network. Each node consists of processing capability that may contain multiple types of memory (program, data and flash memories), have an RF transceiver (usually with a single omnidirectional antenna), have a power source (e.g., batteries and solar cells), and accommodate various sensors.

Some Aspects of Wireless Sensor Networks

International Journal on AdHoc Networking Systems, 2015

The development of the wireless sensor networks (WSNs) in various applications like Defense, Health, Environment monitoring, Industry etc. always attract many researchers in this field. WSN is the network which consists of collection of tiny devices called sensor nodes. Sensor node typically combines wireless radio transmitter-receiver and limited energy, restricted computational processing capacity and communication band width. These sensor node sense some physical phenomenon using different transduces. The current improvement in sensor technology has made possible WSNs that have wide and varied applications. While selecting the right sensor for application a number of characteristics are important. This paper provides the basics of WSNs including the node characteristics. It also throws light on the different routing protocols.

Survey on Wireless Sensor Network with their remaining Challenges

The wireless sensor network (WSN) is a combination of sensing, computation, and communication into a single tiny device. A sensor network consists of an array of numerous sensor networks of diverse types interconnected by a wireless communication network Sensor data is shared between these sensor nodes and used as input to a distributed estimation system. The system extracts relevant information from the available data. Fundamental design objectives of sensor networks include reliability, accuracy, flexibility, cost effectiveness, and ease of deployment. Each node has at least a sensor with an embedded processor, and low power radius. It acts as information source, sensing and collecting data samples from the environment. Node can also act as information sink, receiving dynamic configuration information from other nodes or external entities. The end portion of a node can be an antenna. A chosen configuration is the microstrip structure which allows for planar circuitry to be integrated with the WSN node. WSNs use small, low-cost embedded devices for a wide range of applications. They do not rely on any pre-existing infrastructure. The WSNs need not communicate directly with the nearest high-power control tower or base station, but only with their local peers. In this paper we have discussed related to WSN,sensors, criteria to choose a sensor, classification of sensors, sensor utilization and also we have discussed about some real WSN applications with their remaining challenges.

A Survey Paper on Wireless Sensor Network

Wireless Sensor Network stands as one of the most emerging technologies combining together sensing, computational capability and communication into minute devices proceeding towards whole new world of simplicity. The design of a WSN depends significantly on the application, and it must consider factors such as the environment, the application's design objectives, cost, hardware, and system constraints. There is a necessity of an intermediate software layer between the sensor hardware and the sensor network applications that may be termed as middleware. In wireless sensor network, a collection of small sensor nodes communicates through radio interface. Generally Wireless Sensor Network (WSN) consists of many distributed devices spatially, using sensors to monitor various conditions at various points, including temperature, sound, vibration, pressure, motion or pollutants. WSN acts as a mediator between the real physical world and the virtual world.

A Review of Sensor Node in Wireless Sensor Networks

International Journal of Trend in Scientific Research and Development, 2019

Wireless Sensor Networks (WSNs) are collection of tiny sensor nodes capable of sensing, processing and broadcasting data correlated to some occurrence in the network area. The sensor nodes have severe limitation, such as: bandwidth, short communication range, limited CPU processing facility, memory and energy. Enhancing the lifetime of wireless sensors network and efficient utilizations of bandwidth are essential for the proliferation of wireless sensor network in different applications. We provide an in-depth study of applying wireless sensor networks (WSNs) to real-world habitat monitoring. A set of system design requirements were developed that cover the hardware design of the nodes, the sensor network software, protective enclosures, and system architecture to meet the requirements of biologists. Although researchers anticipate some challenges arising in real-world deployments of WSNs, many problems can only be discovered through experience. We present a set of experiences from a four month long deployment on a remote island. We analyze the environmental and node health data to evaluate system performance. The close integration of WSNs with their environment provides environmental data at densities previously impossible. We show that the sensor data is also useful for predicting system operation and network failures. Based on over one million data readings, we analyze the node and network design and develop network reliability profiles and failure models.

• Wireless Sensor Network: Issues & Challenges

International Journal of Mathematical Archive ( …, 2011

Wireless sensor networks (WSNs) are a new and emerging type of sensor networks that contain sensor nodes equipped with a radio transceiver, other wireless communications devices like a small microcontroller and an energy source, usually a battery. Wireless ...

Abstract—Wireless Sensor Networks

Wireless Sensor Networks (WSN) are used in variety of fields which includes military, healthcare, environmental, biological, home and other commercial applications. With the huge advancement in the field of embedded computer and sensor technology, Wireless Sensor Networks (WSN), which is composed of several thousands of sensor nodes which are capable of sensing, actuating, and relaying the collected information, have made remarkable impact everywhere. This paper presents an overview of the various research issues in WSN based applications.

APPLICATIONS OF WIRELESS SENSOR NETWORKS: AN OVERVIEW

A wireless sensor network is a type of wireless network consist a collection of tiny device called sensor node. Sensor node has a resource constraint means battery power, storage and communication capability. These sensor nodes are set with radio interface with which they communicated with one another to form a network. Wireless sensor network has very necessary application like remote has remote environmental monitoring and target tracking. The goal of our survey is to present a comprehensive review of the recent literature on various aspects of WSN and also discuss how wireless sensor network works and advantages and disadvantages over the traditional network. Wireless Sensor Networks are networks composed of a number of sensor nodes that communicate wirelessly. It's utilized over a wide range of applications. This paper looks at the Wireless Sensor Networks from the applications point of view and surveyed different application areas where the use of such sensor networks and their specifications, capabilities.

A Survey-An Introduction of Wireless Sensor Network

Wireless sensor network (WSNs) has important application such as remoting environment monitoring and target tracking .WSNs is a collection of large number of sensor node which sense the data and transmit to base station. These base station is the central hub for wireless network communication between computers. These sensors nodes are implanted with wireless interfaces through which communication with one another to form a network. In this survey, we try to present an outline of wireless sensor networks and their application domains including the challenges that should be keep in mind in order to push the technology further. In this survey we try to bring out recent development in WSNs from what stated in pre-existing surveys.We do our survey on the leading research projects, journals ,standards ,technologies, and platforms. This paper try to help new researchers entering the domain of WSNs by providing a comprehensive and elaborate survey on recent developments.[2]

Study of Wireless Sensor Network

International Journal of Sensors and Sensor Networks, 2019

A wireless sensor network is a group of specialized transducers with a communications infrastructure for monitoring and recording conditions at diverse locations. Commonly monitored parameters are temperature, humidity, pressure, wind direction and speed, illumination intensity, vibration intensity, sound intensity, power-line voltage, chemical concentrations, pollutant levels and vital body functions. A sensor network consists of multiple detection stations called sensor nodes, each of which is small, lightweight and portable. Every sensor node is equipped with a transducer, microcomputer, transceiver and power source. The transducer generates electrical signals based on sensed physical effects and phenomena. The microcomputer processes and stores the sensor output. The transceiver receives commands from a central computer and transmits data to that computer. The power for each sensor node is derived from a battery. Currently, WSN (Wireless Sensor Network) is the most standard services employed in commercial and industrial applications, because of its technical development in a processor, communication, and low-power usage of embedded computing devices. The WSN is built with nodes that are used to observe the surroundings like temperature, humidity, pressure, position, vibration, sound etc. These nodes can be used in various real-time applications to perform various tasks like smart detecting, a discovery of neighbor node, data processing and storage, data collection, target tracking, monitor and controlling, synchronization, node localization, and effective routing between the base station and nodes. This paper describes the concept of wireless sensor network.