Electronics and Instrumentation - LEB


Biomedical Engineering

Curricular Unit (UC)

Electronics and Instrumentation

Mandatory  x
Scientific Area ELE Category  

Course category: B - Basic; C - Core Engineering; E - Specialization; P - Complementary.

Year: 2nd Semester: 2nd ECTS: 5 Total Hours: 140
Contact Hours T: 30 TP: 30 PL: S: OT:3
Professor in charge

 João Pedro Barrigana Ramos da Costa

T - Lectures; TP - Theory and practice; PL - Lab Work; S - Seminar; OT - Tutorial Guidance.

  • Learning outcomes of the curricular unit:

    A student completing this course unit should be able to:

    1. Describe the electronic behavior of basic electronic components such as resistors, inductors, capacitors.
    2. Perform a theoretical analysis of circuits with discrete components.
    3. Apply basic measurement techniques using the voltmeter, the ammeter and the oscilloscope to study electrical circuits in direct and alternating current. Explain the limitations of the measuring equipment and predict errors due to non-ideal behavior.
    4. Program a microcontroller to read and send sensor data to a PC.
    5. To complete a small project for the acquisition of a biopotential (such as EMG) including the analog front-end, sampling and signal display.
  • Syllabus:

    I- Kirchhoff and Ohm’s law. inductors and capacitors, transient response. Phasors and Impedance.

    II –Diodes. Simple circuits with LEDs. Transistors operating as switches.

    III- The operational amplifier. Amplification and active filtering.

    IV- Fundamentals of measurement and instrumentation: calibration, uncertainty, performance characterisitics. Measurements with the multimeter and oscilloscope

    V- Introduction to the integrated development environment of a microcontroller. Use of the digital I/O interface, serial interface, sampling and the ADC.

    VI – Acquisition of a biopotencial signal (ex. EMG), signal conditioning, sampling and display.

  • Demonstration of the syllabus coherence with the curricular unit's objectives.

    The main aim of this course is to introduce students to electronics and instrumentation in order to allow technical discussions with engineers and understanding of medical instrumentation. In order to achieve these goals topics (I) to (IV) of the syllabus introduce the student to general concepts of electronics and instrumentation. Topic number (V) and (VI) are fundamental to learn how to develop medical devices that integrate sensors and microcontrollers.

  • Teaching methodologies

    The teaching methodology is supported by several components:

    Theoretical and theoretical-practical teaching. Presentation and discussion of concepts in class. Whenever possible examples of medical applications are given. Selected exercises are done to consolidate theoretical aspects. Interactivity in class is encouraged.

    Laboratory teaching- The student learns basic measurement techniques involving electrical circuits. The laboratory includes demonstrations of the use of equipment and exercises where the experimental work is closely followed by the lecturer who helps the student to overcome practical problems.

    The written exam is 70% of the final mark. Work reports correspond to 30%. Tests can be done in alternative to the exam. Final Mark= 0.7 Exam + 0.3 Work Reports.

  • Demonstration of the coherence between the teaching methodologies and the learning outcomes.

    In theoretical and theoretical-practical lectures the theory is presented and selected exercises are done to provide examples of application. Students have access to a set of theoretical problems which give rise to interactivity and discussion in class. Examples of application of the theoretical concepts in the field of biomedical engineering are given to motivate students and achieve the learning outcomes.

    In laboratory sessions demonstrations and laboratory exercises take place. Students have access to a laboratory guide to prepare for the laboratory sessions. The exercises are closely followed by lecturers to help students overcome practical problems. A final practical work promotes discussion and interactivity with the lecturer which is also important to achieve the goals of the course.

  • Main Bibliography:
    1. Morris A., Langari R., “Measurement and Instrumentation”, Elsevier, 2012.
    2. Medeiros Silva M., “Introdução aos Circuitos Eléctricos e Electrónicos”, Fundação Calouste Gulbenkian, 1996.
    3. Robert B. Northrop, “Analysis and Application of Analog Electronic Circuits to Biomedical Instrumentation”, CRC Press, 2004.
    4. John G. Webster,”Medical Instrumentation: Application and Design”, 4th Ed.; John Wiley and Sons, 2009.
    5. Gertz E. Justo P., “Environmental Monitoring with Arduino”, O’Reilly, 2012