Date of Publication :7th June 2016
Abstract: Designing an amplifier board for Bio-signal amplification and filtering requires both software based simulation and hardware implementation of design and testing. There are many tools available today like LabViewTM, multisimTM etc for software simulation with available components. But hardware testing becomes difficult as the bio-signals are very low amplitude and low frequency signals and can be easily affected by coupling noise running through wires on breadboard and in the surrounding. The final testing requires PCB fabrication with proper noise reduction. It is a much time consuming and costly process as it requires multiple PCB to be fabricated for testing of each design. To solve this issue a single simulation board is designed in which all the stages in Bio-Signal amplifier stages are designed with proper noise reduction techniques. MultisimTM is used for simulation of each stage and final PCB is designed with proper noise reduction.
Reference :
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[1]R S Khandpur, “Fundamentals of Medical Instrumentation”,New Delhi, Handbook of biomedical instrumentation, India, Tata Mc Graw-Hill,2003,3-32.
[2]Charles Kitchin and Lew Counts, A Designers Guide to instrumentation Amplifier, U.S.A, Analog Devices, 2 nd ed, 2004.
[3]B B Winter and John G Webster(1983,January),DrivenRight-Leg-Circuit-Design, IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, VOL. BME-30, NO. 1. Available: http://www.elastyc.unimore.it/
[4]Matthew W Hann, “Ultra low power 18 bit Precision ECG data acquisition system”, Texas Instruments Incorporated , Texas, SLAU516-June 2013-Revised, June 2013.
[5] Venkatesh Acharya, “Improving Common mode rejection using the right leg drive”, Texas Instruments Incorporated , Texas, SBAA188,July 2011.
[6]R. Mark Stitt, “AC coupling instrumentation and difference amplifiers”, Burr-Brown Corporation, Tucson, (602) 746-7445, August, 1991.
[7] Charles Kitchin, “If All Else Fails, Read This Article Avoid Common Problems When Designing Amplifier Circuits”, Analog Devices, Nordwood, Analog Dialogue 41- 08, August, 2007.
[8] Paul Brokaw, “An IC Amplifier User’s Guide to decoupling, Grounding, and Making Things Go Right for a Change”, Analog Devices, Nordwood , REV. B
[9] Hank Zumbahlen, “Multiple Feedback Filters”, Analog Devices, Nordwood, MT-220.
[10] Nitin Agarwal, Amit Sengupta,Jayasree Santhosh and Sneh Anand (2011,February), Portable Cost effective EEG data acquisition system, Journal of medical engineering and technology. Available: http://www.Informahealthcare.com/journals