In this project we designed two different biopotential electrode-amplifiers that will be used, in future research, to measure and amplify action potentials in skeletal muscles of the human body. One design is a bipolar biopotential electrode-amplifier that amplifies the potential difference between two electrode contacts, which are placed on the skin. The other, is a monopolar biopotential electrode-amplifier, which contains five electrode contacts arranged close together to measure the skeletal muscles more closely. The bipolar electrode-amplifier designs have been manufactured with and without a printed circuit board (PCN), and have been fully tested. The monopolar electrode-amplifier has been designed, but not manufactured. These devices provide a gain of 100; have noise less than 1.5V referred to the input over the 10-500Hz band, and a pass band of 10-10,000Hz. In addition, the bipolar electrode-amplifier has a common mode rejection ratio (CMRR) greater than 90dB which will measure the skeletal muscles more closely. Ultimately, the manufactured biopotential electrode-amplifiers will be connected to a signal condition and oscilloscope/PC so that the signal may be conditioned, digitzed and recorded.

• This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.

Creator

• Mulligan, Sean Michael
• Blackwell, Lewis Edward

Publisher

• Worcester Polytechnic Institute

Identifier

• 02D225M

Advisor

• Clancy, Edward A.

Year

• 2002

Date created

• 2002-01-01

Resource type

• Major Qualifying Project

Major

• Electrical Engineering

Rights statement

• In Copyright