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Department of Electrical Engineering and Electronics


ELEC362

Project

Circuit simulator application


Module

ELEC362

Coursework name

Project

Component weight

50%

Semester

1

HE Level

5

Lab location

personal computers/laptops, university remote computer

Work

Individual

*Estimated time to finish

40 hours (coding and testing)

Assessment method

Individually

Submission format

Online via VITAL

Submission deadline

09.00 am on the 10th January, 2022

Late submission

Standard university penalty applies

Resit opportunity

None except for extenuating circumstance

Marking policy

Marked and moderated independently

Anonymous marking

No (the marker needs to link the code to the report)

Feedback

via CANVAS

Expected release of marks date

15 business days from the deadline

Learning outcomes

LO2: Using C++ to implement GUI-based software.

LO3: Using online documentation for self-learning.


*Note: This estimate may vary based on the need to debug your application. Make sure you start working on the project as soon as possible.


The project


Task 1: Design and implement a Qt-based GUI which allows the user to draw an AC series circuit.       Then the application will generate the equation that needs to be solved to compute the current. For example, for the circuit shown in figure 1:


Figure 1: Example circuit diagram to the app


The output of the app will be equation 1:

+ + + = 0


−10 + (4.7) + (−6.77) + (15.7) = 0


The application does not need to solve the equation. Only displaying it to the user is enough. If the equation generated is not correct from circuit theory perspective, no marks will be lost.

The elements that can be added as part of the application are: AC source, resistor, capacitor, inductor, and a ground. To remind you how elements can be converted into impedances the  following relations are used:

1

= , = − = 2

In the previous equations ZR, ZC and ZL are the impedances of the resistor, capacitor, and inductor     respectively. R, C and L are the values of the resistance, capacitance and inductance respectively.      Lastly, f is the frequency of the voltage source. If there are multiple voltage sources in the circuit, all of them will operate at the same frequency.

In addition to the core functionality mentioned above, the application:

-      Should have the ability to save and load the circuit.

-      Should allow the user to add elements to the circuit drawing using 3 different means.

-      Should allow the user to change the parameters of the elements (i.e. the resistance of the resistor), by right-clicking on the item.

-      Should be validated, in the report, by using test circuits as inputs to the application obtaining        the equation, calculating the circuit from the equation (not part of the application), then                comparing the solution to a solution provided by another programme such as PSpice or Multisim (No linking to PSpice or Multisim is required in the application).

-      Should be able to deal with a range of potential run-time errors, which the developers should identify.


Task 2: Modify the application to also be able to work with parallel circuits as well. This part is meant to be a challenge so minimal help will be provided for this part.

It is an expectation from everyone to consult Qt documentation to find any functions or classes that might be useful for the implementation of this project. Finally, you should make the programme as   professional as possible. Imagine this project as a real-life project given to you.

Approach to be followed


The following steps will help you to have a good design and implementation of the application:

–     Start by conducting a background overview of the available programs for circuit simulations and how they are used. This will give you a feeling of what a professional design is and a       better understanding of the core functionality. Make sure the practical notes given in the     lectures ae taken into consideration in your design and implementation.

–     Follow the incremental model by breaking the implementation of the application into smaller parts, where every part is designed, implemented and tested before other parts are                  implemented.

–     Make sure your application is working perfectly before moving to task 2.


Note for Mac OS users: You can develop the application and write the report based on Mac version of the app. The application will be tested and marked on a Windows machine. You are strongly         recommended to verify that your app works as it should on a windows machine before submission, to avoid any potential cross-platform issue, if you have any problems, please let me know.

The deliverables


Every submission should consist of the project’s files + brief report. The name of the zip file must be your name. The report must have the student’s name and ID number. The report does not need an   introduction or a conclusion, it must have a cover page, and includes the following sections:

How the programme works (explain the idea of the algorithm, include a flow chart).

User instructions (how should the user use it)

Testing and verification attempts.

Overall notes (optional): in this section you can highlight any special features in your design or implementation of the application. Or you can mention any major issue you faced how    you overcome it. If you left this section empty you will not lose any marks.

Appendix: headers+ source files (must be in machine readable format).


Industrial Relevance


Circuit simulations software are essential tool in industry where ICs for example are designed and power supplies are developed. In addition to educational institutions where physics or electrical    engineering are taught. The tasks given in this project are essential part of famous software

including:


The programming experience gained from doing this project not only extends to circuit simulation software, it also extends to any software where a process is modelled whether it is electrical,          mechanical, industrial, or chemical process.



Mapping the project to modules’ material:



Aspect

Where it is covered

Creating child windows or child dialogs.

Lecture 16, Lecture 18

Saving object in vectors in Qt

Week 8 lab, the tutorial

Loading and saving files

Lecture 18, week 9 lab

Error handling

week 9 lab

Dealing with string sequences

Week 7 lab, the tutorial

Implementing mouse functionality

Lecture 16, the tutorial

Handling drawings

Lecture 17, the tutorial

Implementing a functionality using different methods

Lecture 16, week 8 lab

Controlling the style, layout and GUI design

Lecture 15, the tutorial

Implementing buttons and other input widgets functionality

Lectures 14-15, week 7 lab

Implementing interaction between different elements in a drawing

The tutorial

Online documentation

https://doc.qt.io