This website uses cookies to ensure you have the best experience.

# Sensors Allocation Fault Essay

1808 words - 7 pages

Introduction

Background
A wireless sensor network (WSN) consists of distributed sensors to monitor environmental conditions such as temperature, sound, vibration, pressure, motion or detect dimensions, to pass their data through the network to a base station for processing. Advantages of WSN over a wired system considered in elimination of wiring cost, sensors can be installed in harsh environments. Each sensor node is a combination of Radio transceiver with an internal antenna or connection to an external antenna micro-controller, electronic circuit for interfacing with the sensors, energy source, usually a battery or an embedded form of energy harvesting. Drawback of using sensors is having limited power to consume, a memory that is capable of performing limited computations, in addition to probability of communication failures between nodes.

Motivation
Sensor-based networks basically are characterized by their continuous mode of operation and power sources, which increases the fault rates in sensors, knowing that maintenance or replacement of sensors is considered expensive.
Fault tolerant techniques are based on time redundancy or space redundancy or combination of both. As mentioned previously, a sensor has a limited computation power, so time redundancy techniques are not supposed to be of beneficial. Traditional techniques in backing up sensors are based on double and triple redundancy, which doesn’t satisfy the requirement of having a reliable network with a minimum number of sensors.
This work aims to design an algorithm that finds the minimum number of detection sensors needed in a network for a certain application. Plus, obtaining the minimum number of sensors needed to back up the core sensors.
Assumptions
• Pattern to be detected are defined and fed to the algorithm prior to execution
• The application is susceptible to a single failure at a time

Sensor Resource Assignment and allocation

In this section, we formulate the sensor resource allocation (SRA) problem and establish the complexity of the proposed problem.
The SENSOR RESOURCE ASSIGNMENT (SRA) PROBLEM can be formulated in the following way.
Problem: Set A of points pi (xi1,xi2,xi3), in 3- dimensional space where 1<= i <= 6, the three parameters are represented by dimension, weight and color. J is a set that consists of all possible 2-Dimensional hyper planes that are perpendicular to one of the 3 axes, such that each hyper plane is separating two item patterns pi and pj that have the closest coordinates along the axis to which the hyper plane is perpendicular, j doesn’t equal i and 1<= j<= 6. Hyper planes in our case are the locations where we need to place sensors of multiple types to distinguish all the points which are the 6 pattern of items.
Our aim is to find a subset of selected hyper planes H with minimal and optimal cost, such that any two points pi and pj, are separated by at least one of the selected hyperplanes and also the cardinality of...

## Find Another Essay On Sensors Allocation Fault

### Revolutionary Work of Art Essay

1890 words - 8 pages Walter Benjamin emphasizes in his essay, “The Work of Art in the Age of its Technological Reproducibility” that technology used to make an artwork has changed the way it was received, and its “aura”. Aura represents the originality and authenticity of a work of art that has not been reproduced. The Sistine Chapel in the Vatican is an example of a work that has been and truly a beacon of art. It has brought a benefit and enlightenment to the art

### Enlightenment Thought in New Zealand Schools

1594 words - 6 pages In this essay I will be looking at how the political and intellectual ideas of the enlightenment have shaped New Zealand Education. I will also be discussing the perennial tension of local control versus central control of education, and how this has been affected by the political and intellectual ideas of the enlightenment. The enlightenment was an intellectual movement, which beginnings of were marked by the Glorious Revolution in Britain

### Psychological Egoism Theory

2240 words - 9 pages The theory of psychological egoism is indeed plausible. The meaning of plausible in the context of this paper refers to the validity or the conceivability of the theory in question, to explain the nature and motivation of human behavior (Hinman, 2007). Human actions are motivated by the satisfaction obtained after completing a task that they are involved in. For example, Mother Teresa was satisfied by her benevolent actions and

### How Celtic Folkore has Influenced My Family

1587 words - 6 pages all of Ireland. When Finn accidentally burnt his finger while cooking the fish and tasted the salmon, he inherited wisdom and strength incomparable to any other man in Ireland. King Cormac accepts his fate that he will not be the wisest man in all of Ireland and goes on as King of Ireland. This version, which is the more popular version, teaches young children about making mistakes and forgiveness. It was not Finn MacCoul’s fault that he

### Julia Margaret Cameron

1406 words - 6 pages At a time when women were looked upon as being homemakers, wives, mothers and such the late 1850's presented a change in pace for one woman in specific. Photography was discovered in 1826 and soon after the phenomenon of photography was being experimented with and in turn brought new and different ways of photo taking not only as documenting real time, but also conceptualizing a scene in which an image would be taken. Julia Margaret Cameron will

### Evaluation of School Improvement

1403 words - 6 pages The evaluation process should be progressive to incorporate overall planning, implement changes, which contribute to success. In order to focus on school climate and norms, the evaluation design must include the students, instructions, and outcomes to improve communication and building-level concerns to be address in this response. School Climate and Social Norms The school principal, other staff leaders, and personnel set the tone and the

### Case Study: The Benefits of Animal Testing

1757 words - 7 pages Nine year old Amy has already had a rough start in life. She was born with an abnormal heart that hinders her everyday activities. Amy is unable to keep up with kids her own age because she often tires out easily. As a consequence, she has very little friends and is often alone. Amy is forced to take different medications everyday just to survive. Amy’s life consists of medicine, doctors, and constant hospital visits. However, Amy is due for a

### Myth and Magic: Realism in "One Hundred Years of Solitude"

1531 words - 6 pages “He enjoyed his grandmother's unique way of telling stories. No matter how fantastic or improbable her statements, she always delivered them as if they were the irrefutable truth” (Wikipedia, 2011). Experiences are particular instances of one personally encountering or undergoing something and in these moments of time life changes for the best or the worst and memories are formed. These recollections such as riding your first bicycle, going to

### Adiponectin: a Novel Indicator of Malnutrition and Inflammation in Hemodialysis Patients

2384 words - 10 pages Objective Protein-Energy malnutrition (PEM) and inflammation are common and overlapping conditions in hemodialysis patients which are associated with increased risk of morbidity and mortality. Adiponectin is an adipocytokine which is exclusively produced by adipose tissue. Few studies in hemodialysis patients have demonstrated that serum levels of adiponectin were significantly higher in malnourished patients compared to well-nourished ones. The

### The Congo Free State: A Legacy of Apathy, Exploitation and Brutality

2298 words - 9 pages Between 1885 and 1908, Belgium’s Leopold II ruled Congo, a region in central Africa, as his personal colony, exploiting the resources and inhabitants for his own gain. Leopold allowed and encouraged Europeans and other Westerners to enter Congo and set up companies whose primary purpose was to gather rubber, which was abundant but difficult to get to in the Congo, using the Congolese as the laborers for the Europeans. Rubber gathering in Congo

### Selective Exposition in The Lottery, by Shirley Jackson

1073 words - 4 pages Usually when someone hears the word “lottery” the first thing that comes to mind is a large sum of cash that people compete against highly impractical odds to win. Shirley Jackson’s story The Lottery might imply a similar conception based on the title alone, but the story is filled with unknowns never revealing exactly when and where the story takes place, or why the lottery exists; even what the lottery is isn’t revealed until the very end. Yet

## Similar Essays

### Whatever It Is Essay

862 words - 4 pages . SQTL is the language used to get the services done. Keywords like receive, every and expire are used to get the information. Conclusion : Considering the factors such as fault tolerance, flexibility, high sensitivity and low cost of sensor networks have a exciting prospect in the present and future days in various departments with various applications and uses of its kind. There are still many more improvements to be done for the current network sensors, and many of them are currently under research and will be out soon with the best possible solutions to tackle all the possible constraints and work optimally.

### Tap Net Business Plan Essay

8058 words - 32 pages with those of the supply chain. The scheme ranged from raw electrical power and distribution through device sensors and actuators, programmable logic controllers, and network and integration services. It is a way to potential link the millions of devices on plant floors that run on software yet are not capable of being connected to Ethernet, the emerging lingua franca of factory networks. "The need for an eManufacturing response begins as soon

### When The Bubble Burst Essay

1539 words - 6 pages By the time I arrived state side from my second tour in the Middle East the housing bubble had already burst. I noticed a drastic change in the way that many of my friends and family were living. Several of my friends that worked in real estate had sold their boats and seconds houses. My own stock portfolio had lost a third of its value. My sister and her husband had defaulted on their home mortgage leaving them scrambling for a place to live. I

### Phase Diagram Essay

4456 words - 18 pages Introduction: Chemical equilibrium is a crucial topic in Chemistry. To represent and model equilibrium, the thermodynamic concept of Free energy is usually used. For a multi-component system the Gibbs free energy is a function of Pressure, Temperature and quantity (mass, moles) of each component. If one of these parameters is changed, a state change to a more energetically favorable state will occur. This state has the lowest free energy