A guidance system for helping the blind find the way is described. Means to generate modulated signals of different frequencies is there and also a means to amplify and transmit these signals through conductors along the path of the journey. A cane recieves the signals through oscillating means responsive to each signal. It also comprises an amplifier to amplify the signals so that it can be detacted by many persons carrying such recievers along the path.

An oscillator, amplifier and a pulse generator makes up the reciever stick. This syst ....etc

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Ultrasound Usage in Mobility Aid Systems



The mobility aid system works on the simple principle of reflection of sound waves from the obstacle or an object. For this set up, the system has a simple battery operated circuit, acting as an oscillator producing the required 40 KHz frequency for the operation of the ultrasound generator. The ultrasound generator generates sound waves, which are higher in frequency than the human audible range . Thus generated, sound waves bu ....etc

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Abstract:
Ultrasound Identification is a Real Time Locating System (RTLS) is used to automatically track and identify the location of objects using simple inexpensive nodes (badges/tags) attached to or embedded in objects and devices which then transmit an ultrasound signal to communicate their location to microphone sensors.Ultrasound-based IPS is considered a better alternative to passive Radio-frequency identification (pRFID) in complex indoor environments (such as hospitals), where radio waves may reflect off of metallic or ceramic object ....etc

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I am esther, a student of physics in the university of jos, nigeria. i need a detailed guide on how to go about the project stated above. ....etc

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To get full information or details of ultrasound please have a look on the pages

http://seminarsprojects.net/Thread-design-of-an-ultrasound-thrombolysis-system-for-artificial-hearts?pid=28233&mode=threaded

http://seminarsprojects.net/Thread-ultrasound-therapy-by-using-piezo-electric-method

if you again feel trouble on ultrasound please reply in that page and ask specific fields in ultrasound ....etc

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ppt on speckle noise reduction in ultrasound images using discrete wavelet transform with median and weiner filtering ....etc

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Carl Fischer
Computing Department
Lancaster University
Lancaster, UK.
--
Kavitha Muthukrishnan
Faculty of Computer Science
University of Twente
Enschede, The Netherlands.
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Mike Hazas
Computing Department
Lancaster University
Lancaster, UK.
--
Hans Gellersen
Computing Department
Lancaster University
Lancaster, UK.

ABSTRACT

Ad hoc solutions for tracking and providing navigation sup- port to emergency response teams is an important and safety- critical challenge. We propose a navigation system based on ....etc

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Abstract

In foam extrusion, material density is the most significant factor affecting the product cost and therefore the profitability of the manufacturing process. A reduction in the density of extruded parts reduces the raw material cost and therefore increases its profitability. On the other hand, a reduction in foam density degrades the mechanical properties and geometrical accuracy of extruded parts. Therefore, a critical balance has always to be achieved in order to minimize the material cost while maintaining adequate strength and acc ....etc

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I have RF data and I want to focus them, Is there anyone who can help me?

regards ....etc

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Presented by:
SUVENDU NAYAK




OBJECTIVE:
In order to prevent thrombogenesis in the artifical heart, a prototype ultrasound thrombolysis system is developed.
Thrombus formation in artificial hearts remains a key risk factor in the death of patients. So, the system is assumed to work continously, dissolving micro thrombi before they can grow.
The purpose of this study is to develop the system that can be mounted in the artificial heart.

Introduction:
Patients requi ....etc

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