Engineering Homework Help

Task 2: (Demonstration- 14 marks, Report – 6 marks)
Extend the system in Task 1 to include a ‘user defined’ option as described below.
1. User calls up the user defined option by selecting ‘0’.
2. User is able to select a pump to turn on (red, yellow or green).
3. User enters how long the pump should be on in minutes and seconds (up to 60 minutes).
4. User starts program by pressing ‘#’. The appropriate pump is turned on and a ‘countdown
timer’ is displayed on LCD showing how long is left before pump turns off, as well as the
original time set.
5. If the user presses ‘#’ before countdown reaches zero, the program is ‘paused’. The pump is
turned off, and the countdown timer stops. Pressing ‘#’ again causes program to resume –
pump is turned on and countdown continues.
6. When countdown reaches zero (0 mins and 0 secs), the pump will stop and system comes
out of user program mode.
Note: The system still has to comply with all safety constraints as in Task 1.
Note: You can use your solution to Assignment 1 Task 2 as the basis (design) for this task.
MARKING SCHEME
Task 1 Demo Total 20 (marks)
Fulfils requirements 13
Circuit well laid out and follows good interfacing principles 3
User-friendly interface 2
Innovative features & Robustness of program 2
Task 1 Report Total 10 (marks)
Well-structured and modular code – good use of functions and
procedures, meaningful identifiers, indentation
1
Clear and meaningful comments in code 2
Circuit diagram 2
Description of principles of operation, algorithms, assumptions and
special features
5
Task 2 Demo Total 14 (marks)
Fulfils requirements 10
User-friendly interface 2
Innovative features & Robustness of program 2
Task 2 Report Total 6 (marks)
Well-structured and modular code – good use of functions and
procedures, meaningful identifiers, indentation
1
Clear and meaningful comments in code 2
Description of principles of operation, algorithms, assumptions and
special features
3
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