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ELEC ENG 4BD4 Lecture 1


... analog and digital instrumentation, applied signal ... What is required accuracy? de Bruin EE 4BD4 2014 EE 4BD4 Lab Instrumentation Modular McMaster Analog ... – PowerPoint PPT presentation

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Title: ELEC ENG 4BD4 Lecture 1

ELEC ENG 4BD4Lecture 1
  • Biomedical Instrumentation
  • Instructor Dr. Hubert de Bruin

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Calendar Description Principles of
instrumentation Noise and interference in
electrical measurements Generation and nature of
bioelectric potentials electrodes and other
transducers electrical safety neuromuscular and
cardiovascular instrumentation ultrasonics for
bio-measurements other than imaging computer
interfaces for data acquisition systems. Course
Objectives Students will be able to apply the
principles of electronic circuits and devices to
the use and design of instrumentation in the
biomedical area. They will have gained a basic
knowledge of the operating principles of
electrical and other transducers, analog and
digital instrumentation, applied signal
acquisition and processing, electrical safety in
the medical environment, electrical properties of
nerve and muscle physiology and instrumentation
used in cardiopulmonary, neurological, surgical,
and rehabilitation areas of medicine.
Course Information
Instructor Dr. Hubert de Bruin, ITB A211,
905-525-9140 XT 24171 debruin_at_mcmaster.ca Teaching
Assistants Dennis Yazhemsky, Adhithya
Ravichandran Schedule Lectures 3hours/week
Tutorials 1 hour per week Labs 3hours
Website go to http//www.ece.mcmaster.ca/faculty/
Topics Covered
General Overview of Instrumentation Lecture
1 Introduction to Measurement Systems Lecture
2 Coherent and Other Noises in Measurements Lectur
e 3 General Properties of Sensors Lecture 4
Analog Instrumentation Electrophysiology and
Instrumentation Used Lecture 5 Origins of
Electrophysiological Signals Lecture
6 Biopotential Electrodes Including Equivalent
Circuit Models I Lecture 6A Biopotential
Electrodes Including Equivalent Circuit Models
II Lecture 7 Recording Biopotential Fields on the
Body Common Electrophysiological Signals Recorded
in Biomedicine and Associated Instrumentation Lect
ure 8 Origin of ECG, Standard Recording
Systems Lecture 8A ECG Noise Coupling, Heart Rate
Detection Lecture 9 Muscle Organization and
Topics (contd)
Lecture 10 Electromyography (Recording and
Analyzing Muscle Signals) Lecture 11 Brain
Electrical Signal (EEG) Lecture 11A Other
Instrumentation Applications in EEG Lecture
12 The Electro-Ocularogram (EOG) Sensors and
Instrumentation to Measure Other
Variables Lecture 13 Temperature Sensors and
Instrumentation Lecture 14 Position and Movement
Sensors Lecture 15 Force and Pressure Measurement
using Strain Gauges Lecture 16 Piezoelectrics and
Application Lecture 17 Chemical Sensors
Topics (contd)
Measurement of Cardiopulmonary Function Lecture
18 Invasive and Non-Invasive Blood
Pressure Lecture 19 Measuring Blood Oxygen
(Pulse Oximeter) Lecture 20 Measuring CO2
(Capnometry) Lecture 21 Measuring Blood or
Airflow (Plethysmography) Application of
Therapeutic Electrical Energy Lecture 22 General
Principles of Electro-Stimulation Lecture
23 Cardiac Pacing and Pacemakers Lecture
24 Cardiac Defibrillators Lecture 25 Muscle
Stimulation Lecture 26 Electrosurgery Professional
Standards and Safety Codes Lecture 27 Electrical
Safety I Lecture 28 Electrical Safety II
Laboratory Sessions Lab 1 Differential
amplifiers DAQ / DSP / Statistical Analysis Key
Concepts Discrete Signals, Acquisition,
Amplifiers, Frequency Domain Lab 2 ECG / Heart
Rate Key Concepts Biopotentials,
Electrocardiogram, Einthoven's Triangle, Noise
Artifact, Bio-instrumentation amplifier for
ECG Lab 3 EEG Key Concepts Alpha Beta Waves
(Alpha Blockers) in phase or out of phase.
Spectral and time analysis, Irregularities,
Bio-instrumentation amplifier for EEG Lab 4 EMG
Motor Control Key Concepts Muscle twitches,
rectification, averaging, RMS, Force vs EMG,
Filtering effects on applications of EMG,
Bio-instrumentation amplifier for EMG Lab 5 EOG
Environmental Control Key Concepts DC
Signals, DC Amplifiers, Frequency component of
blinking, Scaling of signals and creation of
algorithms to make raw data into useful
information, Bio-instrumentation amplifier for EOG
  • Textbooks (Optional)
  • 1. Medical Instrumentation Application and
    Design. John G. Webster
  • 2. Custom Courseware, Lecture Slides posted on
    the class website
  • Additional resources
  • Introduction to Instrumentation and Measurements
    Second Edition Robert B Northrop Taylor and
    Francis ISBN 0-8493-3773-9
  • Noninvasive Instrumentation and Measurement in
    Medical Diagnosis Robert N. Northrop CRC press
    ISBN 0-8493-0961-1
  • Design and Development of Medical Electronic
    Instrumentation, D. Prutchi and M. Norri,
    Wiley-Interscience, 2005

Course Assessment
Assessment Labs 20 Midterm 30 Final Exam
Process of Measurement
  • Understand the event (variable) you are measuring
  • Is variable directly related to event?
  • Is variable indirectly related to event?
  • Is variable statistically related to event?
  • Is event itself random?

Process of Measurement (contd)
  • Is measurement biased (will final result have an
    offset, e.g. does it always read high)?
  • What are unavoidable sources of noise?
  • How much does this contaminate your measurement?
  • Maximize your signal-to-noise ration SNR

Measurement Specifications
  • What is amplitude range of selected variable
  • What is bandwidth of variable (does variable
    change rapidly or slowly)?
  • What is required resolution (smallest change you
    need to measure)?
  • What is required accuracy?

EE 4BD4 Lab Instrumentation
  • Modular McMaster Analog Instrumentation System
  • National Instruments DAQ system with Laboratory
  • Desktop PC running National Instruments Virtual
    Instrumentation language Labview

MacECE BiomedLab
Course Objectives
  • Be able to analyse a biomedical measurement
    problem and plan a solution
  • Be able to design analog front ends for a
    variety of physiologically related signals
  • Gain familiarity with a number of different
    instrumentation sensors
  • Design a simple computer data acquisition program

Course Objectives (contd)
  • Gain experience with collecting and analysing
    different electrophysiological signals (ECG, EMG,
    EEG, Accelerometer, etc.)
  • Be exposed to concepts of electrical safety and
    professional medical instrument codes
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