Abstract

 In medical field any disease can be primarily accessed using an acoustic medical device that is a Stethoscope. The wireless electronic stethoscope can be designed by using microcontroller and data is transferred through wireless transmission using zigbee module. In this to pick up the input signals from body of patient a microphone is used as a sensor. After receiving signals, these signals are further processed, amplified to increase their strength. These heart sounds are transferred wirelessly using zigbee module due to this multiple doctors can do auscultation. PC connectivity is provided to store these audio and video files for further analysis. These saved files can be made available using LANs and internet so another doctor can use them in their case, research. Here Heart beat signals are sensed, sent, displayed, monitored, stored, reviewed, and analyzed with ease. In this zigbee communication is used because it is low of cost, requires less energy, supports large number of nodes, reliable and can be used globally. Zigbee is developed by Zigbee alliance. Zigbee was standardized in 2003. The zigbee has IEEE standard as 802.15.4. Zigbee operates in the ISM radio bands 868MHz in Europe, 915MHz in U.S.A. & Australia and 2.4GHz in most jurisdictions worldwide. Data transmission rate varies from 20kbps in 868MHz frequency band and to 250kbps in 2.4GHz. Hence by using wireless stethoscope doctors can hear cardiac sounds clearly and multiple doctor can hear the cardiac sounds because of zigbee module, this will increase accuracy of diagnosis.

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