title: Design of new multi-channel electrodes for surface electromyography signals for signal-processing.
abstract: This paper covers the design aspects of a new multi-channel electrode for the acquisition of surface electromyography signals from a selected muscle. The new multi-channel electrode has 11 pins where the monopolar signals produced will be configured in a software either as Linear array or Laplacian configuration. The design specification of the pre-amplifier ideally was to have a voltage gain of 500 with bandpass filtering of 5 Hz-1 kHz. The final design of the pre-amplifier circuit using an INA 118 instrumentation amplifier was built and tested to give values for voltage gain of 484 with bandpass filtering of 6.8 Hz-1.02 kHz. The software configuration that gives clearer and more defined signals in terms of motor unit action potentials for future signal processing is the Laplacian rather than Linear array.
authors.forename: J
authors.initials: J
authors.lastname: Kilby
authors.forename: K
authors.initials: K
authors.lastname: Prasad
authors.forename: G
authors.initials: G
authors.lastname: Mawston
mesh_terms: D000669:Amplifiers, Electronic; D004566:Electrodes; D004576:Electromyography / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D006801:Humans; D018482:Muscle, Skeletal / Q000502:physiology; D012815:Signal Processing, Computer-Assisted