1. John is designing a Video Monitoring system within a building with
the following requirements.
• Real time (24hr) video monitoring with wireless signal
transmission
• Maximum transmission point distance about 80 m
• About 10 wireless nodes are required
Which wireless communication technology should be used and why.
• Wi-Fi
• Distance exceed Bluetooth and ZigBee Range
• High data rate due to 24 hr monitoring
• Limited quantity, so cost still not so critical
• Not requirement for battery powered

2. Joanne is designing a home entertainment system within a room (about 8m x 8m x 8m) with
following requirements.
• Wireless control controller for gaming and TV channel
• Wireless headset for listening to sounds and music
• Wireless mike for singing
• Do not need line of sight for transmission
Which wireless communication technology should be used and why.
• Bluetooth
• Distance within Bluetooth
• Sound and control do not require very high data rate
• Music transmission is continuous and not suitable for ZigBee
• Require battery powered but allow regular re-charging

3. • Merlin is designing a wireless sensor network for healthcare industry with the following
requirements.
• Monitoring sensors may include heart rate, temperature and Blood pressure mounted on
patient’s body
• Measurement data for multiple patients may be transmitted in proximity within 50 m at
same collation point
• Sensor data may be collated approximately hourly
Which wireless communication technology should be use and
why.
• ZigBee
• Distance within ZigBee range
• Need to be battery operated and no
regular charging for patient’s convenience
• Occasional data transmission and small
data throughput suitable ZigBee

4. Consideration Wi-Fi Bluetooth ZigBee
Power Moderate Low Very Low
Distance 100 m 10 m 75 m
Cost Moderate Low Low
Data Rate 1 – 150 M 1–3M 20 – 250 k

5. Overview IoT System
SCADA
External
Database
Cloud
L01: Introduction to IoT
Data Integration
(ETL)
Constructing
the cube
Sensor
Data Visualization Node
Predictive Analytics
Sensor Sensor
Node Node 5

6. What is SCADA?
• An industrial control system
– With a computer system monitoring
and controlling processes
– Involves data acquisition
– Processes can be
• Industrial
• Infrastructural
• Facility based

7. What is SCADA?
• Software package that is positioned on top of
hardware
– Usually used with Programmable Logic Controllers (PLCs)
– Handles inputs/outputs (I/Os) up to 100s of thousands
– I/Os may be digital or analogue
• Control is based on pre-described scenario
sequences
• Events driven scripting/programming