The routing process in Wireless Sensor Networks may differ from other normal routing methods because it contains no link to follow and no definite structure. The Wireless Sensor Networks is created by densely deployed sensor nodes. These nodes are powered by batteries.The energy-efficient coverage(EEC) problem is solved in other optimization algorithm but the idea of extending the lifetime capa...

Wireless sensor networks (WSNs) have great potential of being deployed in many places where traditional wired or wireless networks are not feasible. But they have also many new challenges more than other wireless networks. These challenges include the design of embedded intelligent sensors and wireless networking technology, ie. routing protocols and network security. WSNs also have some constr...

Wireless sensor networks are integrated of sensor techniques, embedded system techniques, distributed computation techniques and wireless communication techniques. It’s a hot research area in the world. It will be widely used in agriculture. This paper introduces the hardware and software design of wireless sensor networks node for the measurement of greenhouse environment parameters. These nod...

by extending wireless networks and because of their different nature, some attacks appear in these networks which did not exist in wired networks. security is a serious challenge for actual implementation in wireless networks. due to lack of the fixed infrastructure and also because of security holes in routing protocols in mobile ad hoc networks, these networks are not protected against attack...

The major challenge faced by wireless sensor networks is security. Because of dynamic and collaborative nature of sensor networks the connected sensor devices makes the network unusable. To solve this issue, a trust model is required to identify malicious, selfish and compromised nodes. It supports the decision making processes in wireless sensor networks such as pre key-distribution, data aggr...

Wireless Sensor networks are a collection of the sensor nodes with inbuilt processor and memory unit. The data collected by each sensor node is communicated through the network to a single processing center that uses all reported data to detect the event. Reliable routing of the packets is the crucial task in the wireless sensor networks. The message passing must be designed to save the energy ...

The key obstacle to communicating images over wireless sensor networks has been the lack of suitable processing architecture and communication strategies to deal with the large volume of data. High packet error rates and the need for retransmission make it inefficient in terms of energy and bandwidth. This paper presents novel architecture and protocol for energy efficient image processing and ...

Wireless Sensor Networks (WSNs) is a network of an inexpensive low coverage, sensing, and computation nodes. The foremost difference between the WSN and the traditional wireless networks is that sensors are extremely sensitive to energy consumption. Energy saving is the crucial issue in designing the wireless sensor networks. Many researchers have focused only on developing energy efficient pro...

Military surveillance, home health care or assisted living, and environmental science are three major application areas for wireless sensor networks. Revolutionary changes are possible in these areas by using wireless sensor networks. To show the breadth and advantages of wireless sensor networks, design and implementation details are presented for three systems, one in each of these three appl...