Geometric Considerations for Distribution of Sensors in Ad-hoc Sensor Networks
نویسندگان
چکیده
Ad-hoc sensor networks are networks of sensing devices (and other communicating devices) whose goal is to have the sensors “sense” some aspect of their local environment and communicate those values over the network they have created. These type of networks create a number of challenging problems for the following reasons. The sensors that are part of an ad-hoc sensor network are most often low-cost battery powered devices, capable of sensing some aspect of the environment near them. For example, low frequency vibrations, visual light, sound, infrared light, motion, etc. Their batteries have a short life-time and low power. Consequently the sensors they power are severely limited in the range that they can sense and cannot communicate their values far. Furthermore, in typical applications, sensors cannot be positioned accurately. For example, they may be dropped from a plane. The network they use to move information is ad-hoc, in that the network needs to be created using the sensors (and other communication devices). The limited power of sensors means that sensor networks may have to make use of multiple hops within their ad-hoc network to move the information they have gathered to a collection point. What is more, to conserve power one may want to turn the power off on a sensor. The communication network may need to be created on the fly as need be as sensors previously used as relay points may be turned off or have died. Additionally, redundancy of sensor coverage in a part or whole of the area may be important so that if a sensor uses up its power, the area it was sensing is still covered by another. All of these difficulties
منابع مشابه
MHIDCA: Multi Level Hybrid Intrusion Detection and Continuous Authentication for MANET Security
Mobile ad-hoc networks have attracted a great deal of attentions over the past few years. Considering their applications, the security issue has a great significance in them. Security scheme utilization that includes prevention and detection has the worth of consideration. In this paper, a method is presented that includes a multi-level security scheme to identify intrusion by sensors and authe...
متن کاملAn efficient solution for management of pre-distribution in wireless sensor networks
A sensor node is composed of different parts including processing units, sensor, transmitter, receiver, and security unit. There are many nodes in a sensor unit. These networks can be used for military, industrial, medicine, environmental, house, and many other applications. These nodes may be established in the lands of enemies to monitor the relations. Hence, it is important to consider conse...
متن کاملMULTIOBJECTIVE OPTIMIZATION OF SENSOR PLACEMENT IN WATER DISTRIBUTION NETWORKS DUAL USE BENEFIT APPROACH
Location and types of sensors may be integrated for simultaneous achievement of water security goals and other water utility objectives, such as regulatory monitoring requirements. Complying with the recent recommendations on dual benefits of sensors, this study addresses the optimal location of these types of sensors in a multipurpose approach. The study presents two mathematical models for ...
متن کاملGeometric Chemotaxis: A Biologically-Inspired Framework for a Class of Wireless Coverage Problems
We present a new, biologically-inspired algorithm for the problem of covering a given region with wireless “units” (sensors or base-stations). The general problem, framed mathematically as the problem of covering a polygon with a minimum number of circles, is applicable both to sensor networks in which the units are sensors with known sensing range and to wireless networks in which the units ar...
متن کامل