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Design and Implementation of Audiometric Instrument Based on Microcontroller
تصمييم وتنفيذ جهاز مقياس السمع بالاعتماد على المسيطر الدقيق

Authors: Ali Abdul Elah Noori --- Malik Bahnam Abbu Samter --- Ghaidaa Abdulrahmaan Khalid
Journal: Journal of Engineering and Sustainable Development مجلة الهندسة والتنمية المستدامة ISSN: 25200917 Year: 2013 Volume: 17 Issue: 1 Pages: 48-59
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The aim of this paper is to design and implement an audiometry testing instrument (Audiometer) by using PIC16F877A microcontroller that has the capability to apply an audio sound to the patients’ ear with a frequency range of (250Hz to 8KHz) with an intensity ranging from (-10 to 110 dB), and recording the patients’ response through an input device. The instrument hardware was implemented by using a push button switch, headphone circuit, power supplies, two output units using 2 X 16 LCD display and RS232 serial port interface connected with Personal Computer (PC) from through the ports COM1 or COM2 and microcontrollers programmer with its special program (Topwin6). The proposed design of audiometer and simulation results of many cases of hearing states are carried out using ISIS 7 professional simulator and Matlab 2010 environment. Finally, Proton IDE Basic compiler (high level language) is used to write a program which is employed to program microcontroller

الهدف من هذا البحث هو تصمييم وتنفيذ جهاز الاختبار السمعي (مقياس السمع) باستخدام المسيطر الدقيق PIC16F877A لارسال مدى من الترددات من 20Hz-20KHz الى المريض ومعرفة استجابته لهذه الترددات من خلال وحدات الاخراج. يُنجز التصميم المادي للجهاز باستخدام مسيطر دقيق PIC16F877A واحد, مفاتيح ضغط, دائرة السماعة, مجهزات القدرة وحدتين اخراج ؛ عارضة LCD ومنفذ التواليRS232 المربوط مع الحاسب الشخصي (PC) من خلال المنافذ COM1 او COM2 ومبرمجة المسيطرات الدقيقة مع برنامجها الخاص (Topwin6).

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