Unit 1What is a system?

Basic definitions

• Science -

• Technology -

A method of accumulating knowledge

The use of tools

Basic definitions

• Engineering -

• Biomedical Engineering - Using engineering principles and techniques to advance health

Application of science to fulfill human needs

Digestion animationDigestion animation

The Digestive System

Gastro-intestinal (GI) tract

The Digestive System

• How can we study the digestive system?

• Why might seeing inside someone's GI tract be important ?

• What are some challenges to seeing inside someone’s GI tract?

PillCam

Pill Cam animation link

Pill Cam footage

Capsule endoscopy

Pill Cam Promo video

PillCam

Switching over to theory

Can you think of an example of a system?

Let’s list ‘em

Collection of objects that function interdependently to

achieve a defined goal

System

System

1 -Optical Dome 2 -Lens Holder

3 -Lens 4 -Illumination LEDs

5 -CMOS (Complementary Metal Oxide Semiconductor )

6 -Battery 7 -Transistor ASIC

8 -Antenna

Is the Pillcam a system?

ProcessInput Output

General System Structure: Block Diagram

“entrance” “exit”Answers the need or goal

Process

Input Output

• electric energy• mechanical motion• information

information in the form of digital display – a number of steps

The Pedometer:System Block Diagram

• mechanical sensing• software for counting steps• pendulum action

1. Experiment: water temperature change

2. Analysis of the Thermometer system

3. Conclusions

Lab Activity

Beware!

Hot Water!

Safety First

• Designing the system should be adapted to the system’s goal and to the way of use

• Use should be convenient, easy and simple

• Information display should be appropriate, precise, reliable and clear

Matching Function to Purpose

• Engineering

• PillCam

• System

• Matching function to purpose

Conclusions

Next time: Characteristics of the system

Conclusions