could some one tell me the exact meaning of Sensor Fusion

could anyone say the exact definition of sensor fusion?

I understood in the following manner for my project.Am i right?

i use two type of sensors.one is to determine the angle of fingers(flex sensor) and another to determine the position of the palm(accelerometer). Both for the purpose of determining the sign language.Finally the sensor value has to be fed into a processor and programmed depending on the values from both sensors.Is this the concept of sensor fusion? or anything else?

Sensor fusion is the combining of sensory data or data derived from sensory data from disparate sources
such that the resulting information is in some sense better than would be possible when these sources
were used individually. The term better in this case can mean more accurate, more complete, or more dependable,
or refer to the result of an emerging view, such as stereoscopic vision (calculation of depth information by combining
two-dimensional images from two cameras at slightly different viewpoints).

The data sources for a fusion process are not specified to originate from identical sensors.
One can distinguish direct fusion, indirect fusion and fusion of the outputs of the former two.
Direct fusion is the fusion of sensor data from a set of heterogeneous or homogeneous sensors,
soft sensors, and history values of sensor data, while indirect fusion uses information sources like
a priori knowledge about the environment and human input.

Sensor fusion is also known as (multi-sensor) Data fusion and is a subset of information fusion.

Source : Sensor fusion - Wikipedia, the free encyclopedia

by measuring same parameter by different sensors and combining it to determine an accurate result. am i correct?

AnuHV said:

by measuring same parameter by different sensors and combining it to determine an accurate result. am i correct?

Click to expand...

More Accurate, More Complete or More Reliable

One example of direct fusion would be the National Radio Astronomy Observatory Very Large Array (VLA).

Another example of sensor fusion would be a typical Fire/Burglar Alarm System.

And another example, the sensors on a robot.

Sensor Fusion

BigDog

AnuHV said:

could anyone say the exact definition of sensor fusion?

I understood in the following manner for my project.Am i right?

i use two type of sensors.one is to determine the angle of fingers(flex sensor) and another to determine the position of the palm(accelerometer). Both for the purpose of determining the sign language.Finally the sensor value has to be fed into a processor and programmed depending on the values from both sensors.Is this the concept of sensor fusion? or anything else?

Click to expand...

**broken link removed**

I found these papers on sensor fusion which might be of some use in your project:



A Sensor Fusion Based User Interface for Vehicle Teleoperation

Both papers discuss the use of MEMS IMUs to track the position of the body and various appendages.

BigDog

That is the lowest level of sensor fusion

Higher level of sensor fusion is e.g. flying unmanned aircraft in unknown environment
only with help of hundreds of sensors , digital maps , cameras , etc...

or simultaneous control of multiple interdependent processes
as one automated process using sensor fusion


In short.....
Premise of Sensor Fusion
• We can achieve a state of enriched perception by collating all the data we can extract
from as many sensory sources as possible.
– the basic premise behind sensor fusion. The idea is that if you combine the data
from a variety of different sensors, you will be able to measure parameters for
which no single sensor exists.
**broken link removed**


Here is free open source book about............

Sensor Fusion and Its Applications
Edited by Dr. Ciza Thomas
Published by Sciyo
Janeza Trdine 9, 51000 Rijeka, Croatia
Copyright © 2010 Sciyo
486 pages

All chapters are Open Access articles distributed under the Creative Commons Non Commercial Share
Alike Attribution 3.0 license, which permits to copy, distribute, transmit, and adapt the work in any
medium, so long as the original work is properly cited. After this work has been published by Sciyo,
authors have the right to republish it, in whole or part, in any publication of which they are the author,
and to make other personal use of the work. Any republication, referencing or personal use of the work
must explicitly identify the original source.


This book aims to explore the latest practices and research works in the area of sensor fusion. The book intends to provide
a collection of novel ideas, theories, and solutions related to the research areas in the field of sensor fusion. This book is a
unique, comprehensive, and up-to-date resource for sensor fusion systems designers. This book is appropriate for use as an
upper division undergraduate or graduate level text book. It should also be of interest to researchers, who need to process
and interpret the sensor data in most scientific and engineering fields. The initial chapters in this book provide a general overview
of sensor fusion. The later chapters focus mostly on the applications of sensor fusion. Much of this work has been published
in refereed journals and conference proceedings and these papers have been modified and edited for content and style.
With contributions from the world's leading fusion researchers and academicians, this book has 22 chapters covering the
fundamental theory and cutting-edge developments that are driving this field.

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