Download systems_ppt

Unit 1
What is a system?
Basic definitions
• Science - A method of accumulating
knowledge
• Technology - The use of tools
Basic definitions
• Engineering - Application of science to
fulfill human needs
• Biomedical Engineering Using engineering principles and
techniques to advance health
The Digestive System
Digestion animation
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 Promo video
Pill Cam footage
Capsule endoscopy
PillCam
Switching over to theory
Can you think of an
example of a system?
Let’s list ‘em
System
Collection of objects that
function interdependently to
achieve a defined goal
System
Is the Pillcam a 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
General System Structure:
Block Diagram
Input
“entrance”
Process
Output
“exit”
Answers the
need or goal
The Pedometer:
System Block Diagram
Input
• electric energy
• mechanical
motion
• information
Process
• mechanical sensing
• software for counting steps
• pendulum action
Output
information in
the form of
digital display –
a number of
steps
Lab Activity
1. Experiment: water temperature change
2. Analysis of the Thermometer system
3. Conclusions
Safety First
Beware!
Hot Water!
Matching Function to Purpose
• 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
Conclusions
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•
•
•
Engineering
PillCam
System
Matching function to purpose
Conclusions
Next time: Characteristics of the system