Biomedical measurement technology

Data

Official data in SubjectManager for the following academic year: 2026-2027

Topic

The use of measuring instruments is indispensable in both medical diagnostics and research. Based on the physical nature of the measured parameter (voltage, pressure, flow, temperature, optical), we discuss the operating principle of each device, covering the electronic background of processing on both the hardware and software sides. The correct interpretation of the results provided by everyday instruments, the recognition of their errors, and their elimination may become easier after mastering the approach given by the course.

Lectures

• 1. Definition of measurement, errors, accuracy, precision - Hejjel László
• 2. Origin of bioelectric signals - Hejjel László
• 3. Optical measurements - Hejjel László
• 4. Measuring pressure, flow, temperature - Hejjel László
• 5. Digital signal processing, filters, storage, analysis. Displays - Hejjel László
• 6. Electrical safety, electromagnetic compatibility (EMC) - Hejjel László

Practices

Seminars

• 1. Definition of measurement, errors, accuracy, precision, interpretation - Hejjel László
• 2. Measurement of bioelectric signals, interpretation - Hejjel László
• 3. Photoplethysmography, measuring pulse rate, smart wearables - Hejjel László
• 4. Measuring pressure, flow, temperature in practice - Hejjel László
• 5. Digital signal processing, examples - Hejjel László
• 6. EMC measurements - Hejjel László

Reading material

Obligatory literature

Presentation in PDF format

Literature developed by the Department

Presentation in PDF format

Notes

none

Recommended literature

Steven Smith: Digital Signal Processing: A Practical Guide for Engineers and Scientists. Newness or Elsevier, 2002-, https://dspguide.com/ (free)

Conditions for acceptance of the semester

  successful oral/written exam

Mid-term exams

successful oral/written exam

Making up for missed classes

Submission of an essay (3-4 typed pages with illustrations) on a topic chosen by the student in PDF format.

Exam topics/questions

What is measurement? What measurement errors do you know? How do you characterize the accuracy of a measurement? What is a sensor/transducer? What are generator and modulator type sensors? What bioelectric signals do you know, what is their magnitude? What measurements based on optical principles do you know? What is luminescence? What principle do individual flow meters operate on? List pressure measuring devices used in biomedical practice and their operating principles! What temperature sensors do you know based on their structure? Describe the general flow chart of digital signal processing! What does electromagnetic compatibility mean?

Examiners

• Hejjel László

Instructor / tutor of practices and seminars

• Hejjel László