ISSN: 2250-3005 - ijcer

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International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 83. Principle Of OperationThe electret mic used in this project is positioned in such a way as to pick noise which is very suitable for hearingaid. The power supply should be 9V so as to pick small signal. The incoming sound oscillates the base of a transistor whichin turn amplifies the signal at the collector. The output is interfaced to an ADC which converts the signal to digital output.This is necessary because the microcontroller cannot understand analog signal and therefore cannot process it. After theconversion, the microcontroller processes the signal and further feeds it in to the DAC for an analog conversion.By so doing, the original signal is replicated at the other end, though in its amplified form. This output is now fedinto the audio level indicator, LM3915, to indicate the level of the audio signal at the ear phone. However, this level can becontrolled or adjusted according to one’s desire, using a potentiometer. One end of the earphone is plugged into the jack onthe system and the other end in the ear.The subsystems of this work were interconnected or integrated to work as a system. The integration of this systemis necessary so as to tailor each unit of the system to perform a targeted result. The transducer was interconnected to analo g-to- digital converter to be able convert the analog quantity of the ambient temperature to a digital output. The ADC in turnwas interfaced to a microcontroller for processing and giving its digital output to a DAC to reconvert to an analog signal.With all these interconnectivity, the different subsystems can now be said to be working as a system, in that they caninteract with each other to produce a definite result.US ER GUIDETo use the microcontroller based hearing aid, Power ON the switch and the red LED comes on. Plug in the Earphones and Listen. The audio level is indicated by the five LEDs on the box. The loudest level is indicated by the yellowLED. Power OFF when not in use to avoid running the battery down. If the audio level LEDs glow continuously or do notcorrespond to the level of sound, then turn OFF the switch and ON again. If it persists, it could be as a result of either lowbattery or microcontroller lock up.4. ConclusionNo matter what you do for a living, impaired hearing will affect your job performance. This is the information ageand one of the primary ways to receive information is through hearing. The microcontroller based digital hearing aid can goa long way to achieve in people, increased enjoyment of social activities, improved ability to use the telephone, greaterenjoyment of television and music, improved relationships and understanding of speech, increased ability to hearenvironmental sounds, increased self esteem and greater confidence. The design of the hardware using availablecomponents was achieved based on the principles of operation of individual electronic devices. The software programentails writing of programs that will drive the other subsystems to perform the desired operation.References[1]. Rickets T.A. (2011) Digital Hearing Aids: “Current state of the art” retrieved September 04, 2012 fromhttp://www.asha.org/public/hearing/treatment/digital_aid.htm[2]. Imran khan(2012) Advanced Hearing Aid Technology Retrieved September 20 2012, fromhttp://www.eldercareresourcespittsburgh.com/advanced-hearing-aid-technology/[3]. Alexandria V (2006) Hearing Industries Association.(HIA) special survey results on BTEs, directional and telecoiluse. HIA journal 11, 15-25Aru, Okereke Eze is a lecturer in the Department of Computer Engineering, Michael Okpara University of Agriculture,Umuahia, Abia State, Nigeria. His researchInterests include Computer Hardware design and maintenance, digital systems design using microcontrollers and othercomputer related subjects.Ngwu, Chinyere Rosemary is a student in the Department of Computer Engineering, Michael Okpara University ofAgriculture, Umuahia, Abia State, Nigeria. Her research interests include Computer Hardware design and maintenance,digital systems design using microcontrollers, etc.Eng. Dr. Gozie Ihek weaba is a senior lecturer in the Department of Computer Engineering, Michael Okpara University ofAgriculture, Umuahia, Abia State, Nigeria. His research Interests include Computer Hardware design and maintenance,digital systems design, Digital Electronics and other computer related subjects||Issn 2250-3005(online)|| ||December||2012|| Page 255
International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 8Object-Oriented Full Function Point Analysis: An Empirical Validation1, Sheeba Praveen, 2, Dr. Rizwan Beg1, Dept. CSE,Integral University Lucknow ,U.P2,Dept .CSE & IT,Integral university Lucknow,U.P.Abstractthis research work focuses on validation work of my proposed work to determine the functional size of real timeapplication at early stage. This paper will describe how to calculate the functional size of real time system using myproposed model that is Object Oriented Size Estimation Model for Real Time Application [1]. Here in this paper I amvalidating my proposed model with the help of Real Time System. I am taking Human Emotion detection which is realtime software and applying OOFFPA on it. OOFFPA metrics of my proposed model will calculate the size in terms ofFunction Point of this HED software and after calculating the size I compare this size with the size which is calculated byother metrics. Comparisons will prove that OOFFP metrics of my proposed model is best for size measurement of realtime system.Keywords : OOFFPA, OPA, FPA, OO, TFPCP, FFP, OOSE, UML, OOFP, SC, AS, AG, GN/SP, MX, OOMC, OOTC,OOCC, OOUCG, OORCG, OOCECE, OOCECX, OOCICR, OOCICW, OOEI, OOEO, OOEQ, OOILF, OOEIF, OOFC.1. INTRODUCTIONThis research is focuses on the cost estimation of Real Time System and for that I choose “Human EmotionDetection (HED)” which is a Real time system. This case study will help to validate my proposed work. In this case studyI am using OOFFP metrics and Object oriented development procedures to estimate the size and cost of HED real timesoftware.The HED can be applied in robotics in AI. The Robot can detect the human emotion and act accordingly thesituation. This code can be interfaced with the help of embedded system using some programming language.The camera will act as a sensor which captures the image of human and analyses the image on the basis of his/her facialexpression. It detect the emotion i.e. Happy, Sad, Strange, Normal, Surprise etc. means act accordingly the situation.Scenarios of HED are following:1. Take an image as an input2. Then apply skin color segmentation on an image3. Find the largest connected region4. Check the probability to become a face of the largest connected region5. Convert the RGB image into Binary image6. To detect that the image is human face or not7. Separate the Eye and Lips from the image8. Convert the Eye and Lips into Binary image9. Apply the Bezier Curve on Eyes and Lips10. Detect the human Emotion From the image2. OBJECT ORIENTED DEVELOPMENT LIFE CYCLEA. Object Oriented DesignIn this research I follow the object oriented development life cycle to estimate size and cost of project [].1. Object modeling Techniques2. Dynamic modeling techniques3. Functional modeling techniquesAll three object oriented design techniques and associated models (D) are used in the proposed Size estimation model.These models help to estimate the size of the project. So In this research I am applying Management Function count andControl function count on all three models of object oriented design.4.2.1 Unified Modeling LanguageThe Unified Modeling Language (UML) defines a large number of different diagrams. They are divided into followingthree categories: Static structure diagrams, Behavior diagrams and Implementation diagrams. In order to calculate thefunction point from the above diagrams, we use the sequence diagrams and class diagrams. Because these diagramsincludes the information about all functions and data manipulated in the system. All these UML diagram are explained inmy proposed paper” Full Functional size measurement Model applied to UML-based Real Time Application” [1].||Issn 2250-3005(online)|| ||December||2012|| Page 256
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