TC30003E – Essential Technology
Assignment: Coursework 2 – Logicator Exercise
The deadline for this assignment is 11.59pm Thursday the 18th of January 2024.
This report should be word-processed and submitted through Turnitin on
Blackboard. For more information, email either (Nadia.Djaid@uwl.ac.uk) or
Learning Outcomes covered by this assignment
• Design, implement and test a simple control system, utilizing logic
• Apply appropriate theories of physics to technology problems
Assignment Brief
Your submissions for this exercise will be firstly a report detailing your design and
implementation of your flowchart and secondly your Logicator file. The report
should be written using a suitable text editor such as Microsoft Word and submission
is done electronically using Turnitin on Blackboard. Both files should be submitted
through Turnitin.
Design Task
You are to design the control Logic of a lift in a 3-floor building.
Background information on the lift for this assignment.
A 3-storey building has a lift that is used to carry people between its floors. The lift
has buttons that are used to control its operation.
On Ground Floor – L0:
G: This button is pressed by passengers on the ground floor that to call the lift.
On 1
st Floor – L1:
U1: This button is pressed by passengers requesting the lift and wishing to go up to
L2
D1: This button is pressed by passengers requesting the lift and wishing to descend
to L0
On 2
nd Floor – L2:
D2: This button is pressed by passengers requesting the lift and wishing to
descend.
Inside the lift: there are 3 buttons
L0: This button is pressed by passengers wishing to go to Ground Floor.
L1: This button is pressed by passengers wishing to go to 1st Floor.
L2: This button is pressed by passengers wishing to go to 2
nd Floor.
The buttons control two motors:
– A motor moving the lift up and down (moving the lift between two adjacent
floors takes three seconds).
– A motor opening the inner lift doors. The lift’s inside doors are linked to the
doors on each floor when the lift arrives, so no additional motor for opening
the outer doors on each floor are needed.
Marks are given for complexity and enhancement of your design. (see below).
Operation of the Lift:
– When the lift reaches a floor, the doors open for 15 seconds to allow
passengers to enter or to leave, before closing its door and continuing its
operation.
– The lift makes a decision to proceed to the next level (up or down by
monitoring the L0, L1 and L2 buttons).
– The lift gives an up or down command to the electric motor that moves it up
and down between floors.
– It takes 3 seconds for the lift to move between floors.
– The lift control must give an open door command to open the doors when
needed.
TASK 1:
You are required to provide a flow chart for the operation of this lift. You must also
describe in detail the design of your flowchart, i.e., provide an explanation on how
your system works. This part of the assignment should be in the form of a technical
report.
TASK 2:
Implement your flowchart on the Logicator software, which is installed on the
workstations in the computer rooms. For practise, you can also download the software
and install it on your home PC or laptop from the following link.
https://picaxe.com/software/picaxe/picaxe-editor-6/
You will have to demonstrate that the flowchart you have implemented works. This
can be done in various ways including providing screenshots. You must provide
appropriate documentation, such as the utilisation of input and output pins: Which
input pin relates to which button? What motor does what function? Which output pin
relates to which light? Etc.
To enhance your design, you may include the following and/or any other features
that you want:
• Indicate whether the lift is going up or down, i.e., one output lighting an up
arrow, and one output lighting a down arrow.
• Sound an alarm when the door is closing.
• Sound an alarm when the lift has reached a floor.
• Check a photointerruptor when closing doors to ensure they are not blocked.
Award of marks:
Marks will be awarded on your ability to do the following:
• A good quality flowchart (i.e. one which is readable, well commented and
documented) [20 marks]
• The complexity of your solution [20 marks]
• The documentation that you provide with your solutions [10 marks]
• Ability to demonstrate that you have learnt and used Logicator [20 marks]
• The enhancement that you have added to your solutions [15 marks]
• Evidence that you have checked your solution [15 marks]
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Summary of submission components:
For this coursework you will submit the following and there will be a separate
submission link for each of them on Blackboard:
1. Word-processed report (50%)
2. Logicator file and implementation (50%)