|
Solution components
| C Function: Detect
motion |
C.1 - PIR Sensor
 |
| Abb. Nr.: C.1 |
| Advantages: |
Disadvantages: |
|
Detects motion reliably in indoors as well as in day or
dark.
|
Does
not operate greater than 35 degree Celcius
|
|
Works
effectively in LOS (Line of Sight)
|
Insensitive
to very slow motion of the objects
|
| Cheaper |
|
| |
|
| |
|
C.2 - IR Sensor
 |
| Abb. Nr.: C.2 |
| Advantages: |
Disadvantages: |
|
Low power requirements |
Limited range |
|
Do not require contact with object for detection |
Can be affected by environmental condition eg: rain, fog,
dust, pollution |
| |
Does not detect darker surface |
| |
|
| |
|
C.3 - Ultrasonic Sensor
| Advantages: |
Disadvantages: |
|
Can work in dark environment
|
Very sensitive to variation in temperature
|
|
Higher sensing distance
|
More difficulties in reading reflections from soft, curved,
thin, and small objects
|
| |
|
| |
|
| |
|
| D Function: Receive signal |
D.1 - 1 ESP32
(share)
 |
| Abb. Nr.: D.1 |
| Advantages: |
Disadvantages: |
|
Cost efficient |
Not enough output current and voltage to supply to multiple
output |
|
|
|
| |
|
| |
|
| |
|
D.2 - 1 ESP32 for
each lamp
| Advantages: |
Disadvantages: |
|
Enough current for output sensors |
Total cost is higher |
|
easy to monitor via each microcontroller |
|
| Stand alone
system |
|
| |
|
| |
|
| E Function: Transmit data |
E.1 - WiFi
| Advantages: |
Disadvantages: |
|
Broader range
(100 m)
|
More
complex and requires configuration of hardware and software.
|
|
Better security features
|
High power consumption
|
| |
|
| |
|
| |
|
E.2 - Bluetooth
| Advantages: |
Disadvantages: |
|
Fairly simple to use and switching between devices is
easier.
|
Small range (10 m)
|
|
Low power consumption
|
Less secure
|
| |
Supports limited number of user |
| |
|
| |
|
F.1 - MOSFET driver
 |
| Abb. Nr.: F.1 |
| Advantages: |
Disadvantages: |
|
Operates solely based on electronic |
For DC actuators |
|
Can support up to 8 various actuators at the same time (8
channel) |
Expensive than relay |
| Control and
load circuits are separated by galvanic optocoupler |
|
| Load voltage
from 4.8 V to 24 V |
|
| |
|
F.2 - Relay
 |
| Abb. Nr.:F.2 |
| Advantages: |
Disadvantages: |
|
Have fast operation and fast reset |
Requires periodic maintenance and testing |
|
Can be used for both AC and DC systems for protection of AC
and DC equipments |
Operation can be affected due to ageing of the components
and dust, pollution resulting in spurious trips |
| |
Operation speed for an
electromagnetic relays is limited by the mechanical inertia
of the component |
| |
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