Transcript Theoretical Design Requirements cont.

The Theoretical Design
Introduction
Theoretical Design Requirements
Marking Criteria
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Introduction
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In industry one is expected to prove that an idea will work by simulating
the idea using relevant software and/or by building a prototype.
The simulation is usually omitted only if suitable simulation software is
unavailable or if certain sections of the circuit simply cannot be simulated
(e.g. the actual code for a microcontroller).
With this in mind it, is COMPULSORY to design a circuit diagram for the
project prototype. This is the circuit/s that you intend building /
demonstrating for your actual project for this subject.
Prepare the Theoretical Design document containing all circuit diagrams,
calculations, component selections and simulation results.
You may not purchase components/parts for the prototype until your
Theoretical Design has been accepted and passed by the NMMU mentor.
A sub minimum of 50% is needed for this assessment.
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Theoretical Design Requirements
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Create a MS Word document that contains the following:
1. Cover Page
– Title of the project, student name and number, and mentor’s name.
2. Schematic Diagram
– Complete a full schematic diagram of the proposed project
– Use a CAD package (MultiSim, Protel), MS Word, MS Visio or by hand
(and then scanned into the document)
– You don’t have to provide a schematic diagram of the power supply if
an external supply is going to be used.
– In the case where a development/controller board (MultiPIC, Arduino,
RS232 IO Controller, etc.) is going to be used, only the board’s I/O and
Supply pins have to be indicated by a block in the schematic. A
complete circuit of the board is not required.
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Theoretical Design Requirements cont.
3. Circuit Description and Calculations
– If possible, break the full schematic diagram into smaller sections and
explain each section’s circuit. Otherwise give a description of the full
circuit’s operation.
– Show all calculations that were used to design each section of the full
schematic diagram (resistor values, wattages, currents, voltages etc.)
– Show tables and figures from datasheets when more specialized
components are used, or when you want to prove a certain formula or
operation of a component.
4. Application Specific Components (if applicable)
– Provide a description and reasons for selecting the application specific
components for this application. These will normally be the more
specialized components.
– Also mention alternatives available and a reason(s) for your
choice.
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Theoretical Design Requirements cont.
5. Simulation Results (if applicable)
– Where possible, test your schematic design in a simulation package
(MultiSim) and verify that the circuit will work.
– Provide evidence of this with screen captures etc.
– Do simulations on smaller sections of the circuit if the complete circuit
cannot be simulated at once.
– Simulation of actual code for microcontrollers will be difficult. Show
simulations of the interfacing circuits then in these cases.
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Theoretical Design Requirements cont.
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6. Software Planning (compulsory for Microcontroller and PC based
projects)
– Complete all preliminary flowcharts for the control software (use MS
Visio, MS Word, or by hand).
– Indicate a draft representation of all the graphical user interfaces (GUI)
for PC based projects.
– Indicate a overall view of LCD messages and menu systems for
Microcontroller based projects.
– A draft communication protocol description must also be provided in
the case of Microcontroller/PC communication projects.
The document does not have to be ring-binded and can simply be stapled.
Attach a copy of the Marking Sheet to the cover page and fill in your
student name and number on the sheet.
Email a copy of this document to your NMMU mentor.
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Theoretical Design Requirements cont.
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These are the minimum requirements for the document, you can add
more information if you want.
The document does not have to be ring-binded and can simply be stapled.
Attach a copy of the Marking Matrix to the cover page and fill in your
student name and number on the sheet.
Email a copy of this document to your NMMU mentor.
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Marking Criteria
Theoretical Design Marking Matrix
Student No:
Surname:
Section
Weight
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1
2
1
0
None
None
1
2
3
4
Original Design and or, Technical Modification Considerations
Less than 50% of the
Most of the technical
technical aspects
All technical aspects of
Very basic, too
aspects regarding
regarding design or
considered and
simplistic
modification or design
modification
accounted for
considered
considered
Design Calculations, Programming and or, Design Considerations
50% present and
Complete, correct and
Between 0 and 2
Between 2 and 4
correct
realistic
Mark out of 4
Weighted Result
Each student must present either Alternative 1, or Alternative 2
Alternative 1, Design Simulation
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2
None
Partly functional
simulation, missing
fundamental details
Completely functional
Completely functional simulation, showing
Partly functional
simulation, showing
input and output
simulation, showing
various plots as deemed
signals including
various plots, missing
appropriate, missing
various plots as
significant details
minor details
deemed appropriate,
good logical layout
Alternative 2, Explanation of Functional Components as an alternative to Design Simulation
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2
None
Explanation of each
Explanation of each
Student knows very
Explanation of each
component of the
component of the
little about the
component of the
project is not
project is
technical aspects of the
project is
comprehensive. Some
comprehensive.
project. Few reasonable
comprehensive. Small
reasonable and logical
Reasonable and logical
and logical assumptions
omissions regarding
assumptions have been
assumptions have been
have been made.
assumptions.
made.
made
Percentage
Total (out of a max of 16)
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