Wireless Sensor Networks Are Used For Detecting The Natural Events By Measuring The Temperature, Air Pressure, Vibration

Nowadays, Wireless sensor networks (WSNs) are getting more and more involved in our society, researchers and manufacture. As the use of WSNs increases the more challenges rise to make them immune and life longer. Therefore, both fields industry and academia invest money to improve the capability of the security integrity, confidentiality, and authentication. Since WSNs are distributed in unfrequented and abandoned venues, the physical security is unconcerned or less concern. The most concern is the lifetime of Wireless sensor networks, sensors have limited source of power. Thus, economizing energy will keep sensors live longer, the less power means more efficiency. Moreover, secure data is important as well, since no one attends where sensors are located, it is easy to manipulate data or steal it. Cryptography provides high security to WSNs, using algorithms to encrypt and decrypt the sent data is

The impossible measurements in typical ways have currently become attainable using the wireless technology. Wireless sensors are used in most of the in real time applications for collecting physical information. Wireless sensors are spatially distributed autonomous sensors to monitor physical or environmental conditions, such as temperature, sound, pressure, etc. and to cooperatively pass their data through the network to a main location. They are self-configured sensors to monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants and to cooperatively pass their data through the network to a main location or sink where the data can be observed and analyzed. A sink or base station acts like an interface between users and the network. The main objective of this paper is to introduce air pollution detection using internet of things and to report the status of the air quality whenever needed. This system is low

Wireless Sensor Network is a new technology consists of related distributed sensors to monitor physical or environmental condition. A basic wireless sensor network is shown in fig 1.1. A wireless sensor network (WSN) has many small sensor nodes deployed in large numbers to sense the physical world. WSN have many applications such as military and civilian usage.

Honeywell technology leads the way with their Hart and One Wireless Networks. They use asset management solutions to provide customers with ultimate flexibility. Honeywell brings immediate benefits to the industry by cost-effectiveness, empowering a mobile workforce, plant security with wireless cameras and connects remote controllers to the central control systems (3). Honeywell has always offered free and simple access to application upgrades from their websites (4). Its technology has been implemented from the field to the control room. The one wireless device has a self-discovering and self-organizing managed and secure wireless field instrument mesh network. They talk to each other and bridge the wireless network together. They use the IEEE 802.11 standard that increases the network performance and improve air quality. The instruments in the field send data through neighboring instruments back to the gateway device. This is used for non-critical monitoring and they do not require a fast update rate. The more the instruments the faster the update rate, this could be as fast as one a second. There is a pitfall to these devices and that is battery life, but this can be alleviated with adding more access points. Most of the time users get three years battery life from their field instruments while using a one second update rates.

Despite continued dynamic growth in the South African information and communication technology (ICT) sector, most significantly in the mobile sector, this growth has yet to meet the national goals of affordable access for all South Africans to the full range of information and communication services. Access to mobile voice and data continues to grow, however broadband access (in particular fixed-line broadband) remains comparatively and noticeably lower than other lower to middle income countries. Prices of all communication services in South Africa continue to remain high by both global and and most noticeably, African standards.

A Wireless Sensor Network usually is formed by numerous wireless sensor devices. Routing is an important mechanism which will help the data to get forwarded to the right destination. Internet Protocol is an important protocol which helps in routing process. Generally the nodes in a Wireless Sensor Network are integrated and routing using IP version 4 is difficult as the address space is limited. IP version 4 uses 32 bit addressing mechanism which is not sufficient to complete the routing process. The other option is the use of Internet Protocol version 6.

Introduction There is widespread research interest in information and communication technologies (ICTs). According to Crede & Mansell (1998), ICTs are crucially important for sustainable development in developing countries. Thioune (2003) notes that for the past two decades most developed countries have witnessed significant changes that can be traced to ICTs. These

Also, there is now wide ICT deployment in both the public and the private sectors though a lot of growth is expected in the forseeable future. The deployment of ICT has contributed largely to the rapid development of other sectors of the country’s economy and had been a backbone specifically in the growth witness in the financial service and telecommunication sectors whereby the have become more innovative in the products and services. Whereby, the ICT sector has seen the fastest sectoral growth of the Nigerian economy with average CAGR growth of 35% in the past decade (NBS). ICT sector contributed 5.46% to the country’s Gross Domestic Product (GDP) in 2011 while private investment in the sector increased from US$50 million in 1999, to US$18.0 billion, in 2009, and $25 billion in 2010 respectively (Ministry Of Communication Technology, 2012) .

ABSTRACT: The Power of wireless sensor network technology has provided the capability of developing large scale systems for real time monitoring. The recent years, people were unknown for all kind of natural disaster and calamities. Natural calamities like Earthmovers (earthquake), Heavy rainfall, Flood, Tsunami. This paper describes the evolution of a wireless sensor network system for landslide detection in the particular area. The development of a wireless sensor network (WSN) to detect landslides, which includes design and development of WSN for real time monitoring system. If movements of rocks or soil are observed, the collected data sets are automatically transmitted to a connected server system for further diagnoses. The landslide monitoring system presented in this paper is RF transceiver and provides real-time information about the current state of the monitored slope. Laboratory tests have been conducted to

India is currently the second-largest telecommunication market and has the third highest number of internet users in the world

In 2008, ICT (Information and communication technologies) sector of the Canadian economy totaled $59.2 billion

“The world Bank Group invests around US$800m per year in specific loans and guarantees on ICTs and development, and US$1-1.5bn per year on projects with significant ICT components (World Bank, 2009a).”

Innovation in ICT and its impact on the society has been astounding. It is considered to be “crucial for economic activity” (Jorgenson and Vu, 2007) as it not only “increases productivity and boost economic growth,” (Jorgenson et al, 2008) but “generates complementary innovations that improve economies ' total factor productivity.” (Ceccobelli et al, 2012)

The wireless sensor networks mainly comprise stationary and mobile sensors that are deployed randomly inside the network and they collect data from the surroundings via wireless communication links [7, 8].

Wireless Sensor Networks refers to incredibly distributed networks of small and lightweight wireless nodes with very confined capabilities, deployed in large numbers in an open environment to monitor the environmental conditions by measuring physical parameters such as temperature, pressure, humidity etc. Each and every node (sensor) has a microprocessor and a small amount of memory for sensing, signal processing and for communication purposes. Each sensor node communicates wirelessly with different regional nodes within its radio conversation range. Deployment of WSN’s evade installation costs however at the same time power efficiency as a main challenge. A scheme of a wireless sensor node connected to the internet is shown in Fig. 1: wireless sensor networks ordinarily contains sensing unit, processing unit, transmission unit and power unit.