please write a 6 pages include the table paper which title is "smart-mirror" with CONCEPT DEVELOPMENT A. Alternative Options 1) Advantages 2) Disadvantages
YANGYANG
Concept-EndProduct.pptConcept Development and End Product Description
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Concept Generation
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Portable Audio Equalizer
Objectives
The system should have excellent sound quality.
The system should have easy equalization
The system should be of light weight
The system should be low cost
Constraints
The system must be portable
The system will be an add-on to existing MP3 player
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Concept Fan
- The Concept Fan is a way of discovering alternative approach’s to a problem when you have discarded all obvious solutions. It develops the principle of 'taking a step back' to get a broader viewpoint. Initially, the Concept Fan requires you to draw a circle in the middle of a large piece of paper. Write the problem you are trying to solve in the circle. To the right of it radiate lines representing possible solutions to the problem see the diagram below:
https://www.mycoted.com/Concept_Fan
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Concept Fan
- It is possible that the ideas you have come up with are impractical or do not really solve the problem. If this is the case, take a 'step back' for a broader analysis of the problem. Drawing a circle to the left of the first circle does this, writing the broader definition into this new circle and linking it with an arrow to show that it comes from the first circle, see diagram below:
- Use this as a starting point to radiate out other ideas, if this does not give you an adequate amount of new ideas, you can take yet another step back (and another, and another…)
https://www.mycoted.com/Concept_Fan
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Concept Fan
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Sheet1
Sheet2
| Input Amplifier | Automatic Level control ALC | Graphic Equalizer | |||||
| Single Transistor + OPAMP | Analog Logarithmic Amplifier | Active Filter | |||||
| Dual OPAMP | Microcontroller + variable Gain Amplifier | Passive Filter | |||||
| Digital Filter | |||||||
| Advantages | Disadvantages | ||||||
| Moderate Cost | Fully Featured | ||||||
| Moderate to Implement | Higher Signal to Noise ratio |
Sheet3
| Input Amplifier | Automatic Level control ALC | Graphic Equalizer | |||||
| Single Transistor + OPAMP | Analog Logarithmic Amplifier | Active Filter | |||||
| Dual OPAMP | Microcontroller + variable Gain Amplifier | Passive Filter | |||||
| Digital Filter | |||||||
| Advantages | Disadvantages | ||||||
| Moderate Cost | Fully Featured | ||||||
| Moderate to Implement | Low Signal to Noise ratio |
Concept Combination Table
- A concept Combination Table (also called morphology box) is a matrix of concept fragments organized by functions (each function forms a separate column) so that an integrated concept can be created by choosing any concept fragment for each function and combining them to complete the required functionality.
https://books.google.com/books?id=9ZjLBQAAQBAJ&pg=PA114&lpg=PA114&dq=concept+combination+table&source=bl&ots=ceBcnUUi7f&sig=PiCBZeHApgZDjgYV2EtcYDbuWeA&hl=en&sa=X&sqi=2&ved=0ahUKEwinsOeq4bTPAhVJmR4KHeO0D9kQ6AEIXDAM#v=onepage&q=concept%20combination%20table&f=false
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Concept Combination Table
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Sheet1
Sheet2
| Input Amplifier | Automatic Level control ALC | Graphic Equalizer | |||||
| Single Transistor + OPAMP | Analog Logarithmic Amplifier | Active Filter | |||||
| Dual OPAMP | Microcontroller + variable Gain Amplifier | Passive Filter | |||||
| Digital Filter | |||||||
| Advantages | Disadvantages | ||||||
| Low Cost | Not many features | ||||||
| Easy to Implement | Low Signal to Noise ratio |
Sheet3
Concept Combination Table
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Sheet1
Sheet2
| Input Amplifier | Automatic Level control ALC | Graphic Equalizer | |||||
| Single Transistor + OPAMP | Analog Logarithmic Amplifier | Active Filter | |||||
| Dual OPAMP | Microcontroller + variable Gain Amplifier | Passive Filter | |||||
| Digital Filter | |||||||
| Advantages | Disadvantages | ||||||
| Moderate Cost | Low Signal to Noise ratio | ||||||
| Moderate complexity to Implement | |||||||
| Fully Featured |
Sheet3
Concept Combination Table
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Sheet1
Sheet2
| Input Amplifier | Automatic Level control ALC | Graphic Equalizer | |||||
| Single Transistor + OPAMP | Analog Logarithmic Amplifier | Active Filter | |||||
| Dual OPAMP | Microcontroller + variable Gain Amplifier | Passive Filter | |||||
| Digital Filter | |||||||
| Advantages | Disadvantages | ||||||
| Moderate Cost | Design Complexity | ||||||
| Fully Featured | |||||||
| Higher Signal to Noise ratio |
Sheet3
| Input Amplifier | Automatic Level control ALC | Graphic Equalizer | |||||
| Single Transistor + OPAMP | Analog Logarithmic Amplifier | Active Filter | |||||
| Dual OPAMP | Microcontroller + variable Gain Amplifier | Passive Filter | |||||
| Digital Filter | |||||||
| Advantages | Disadvantages | ||||||
| Moderate Cost | Fully Featured | ||||||
| Moderate to Implement | Low Signal to Noise ratio |
Concept Selection
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Sheet1
| 0.4761904762 | ||||||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | |||||||
| Sound Quality. | 1 | 5 | 3 | 3 | ||||||
| Easy Equalization | 1/5 | 1 | 1 | 3 | ||||||
| Light Weight | 1/3 | 1 | 1 | 5 | ||||||
| Low Cost | 1/3 | 1/3 | 1/5 | 1 | ||||||
| This table compares the relative importance of the objectives. “Sound Quality is strongly more important than Easy Equalization". (There is a 5 in this cell) | ||||||||||
| 1 = equal | 3 = moderate | 5 = strong | 7 = very strong | 9 = extreme | ||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | G. Mean | w | |||||
| Sound Quality. | 1.00 | 5.00 | 3.00 | 3.00 | 2.5900200641 | 0.52 | ||||
| Easy Equalization | 0.20 | 1.00 | 1.00 | 3.00 | 0.8801117368 | 0.18 | ||||
| Light Weight | 0.33 | 1.00 | 1.00 | 5.00 | 1.1362193665 | 0.23 | ||||
| Low Cost | 0.33 | 0.33 | 0.20 | 1.00 | 0.3860973951 | 0.08 | ||||
| This table is used to determine the weights (importance) of the objectives | Total | 4.9924485625 |
Sheet2
Sheet3
Concept Selection
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Sheet1
| 0.4761904762 | ||||||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | |||||||
| Sound Quality. | 1 | 5 | 3 | 3 | ||||||
| Easy Equalization | 1/5 | 1 | 1 | 3 | ||||||
| Light Weight | 1/3 | 1 | 1 | 2 | ||||||
| Low Cost | 1/3 | 1/3 | 1/2 | 1 | ||||||
| 1 = equal | 3 = moderate | 5 = strong | 7 = very strong | 9 = extreme | ||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | G. Mean | w | |||||
| Sound Quality. | 1.00 | 5.00 | 3.00 | 3.00 | 2.5900200641 | 0.53 | ||||
| Easy Equalization | 0.20 | 1.00 | 1.00 | 3.00 | 0.8801117368 | 0.18 | ||||
| Light Weight | 0.33 | 1.00 | 1.00 | 2.00 | 0.9036020036 | 0.19 | ||||
| Low Cost | 0.33 | 0.33 | 0.50 | 1.00 | 0.4854917717 | 0.10 | ||||
| Total | 4.8592255762 | |||||||||
| w | ||||||||||
| Sound Quality. | 0.53 | |||||||||
| Easy Equalization | 0.18 | |||||||||
| Light Weight | 0.19 | |||||||||
| Low Cost | 0.10 |
Sheet2
Sheet3
| Option 1 | Option 2 | Option 3 | If a contraint is No | |||||||||
| Constraints | That Option must be Discarded | |||||||||||
| Must be Portable | Yes | Yes | Yes | |||||||||
| Add-on to existing MP3 P. | Yes | Yes | Yes | Select option with Highest Score | ||||||||
| Objectives | w | |||||||||||
| Sound Quality. | 0.52 | 3.00 | 1.56 | 3 | 1.56 | 5 | 2.60 | 5 is Maximum | ||||
| Easy Equalization | 0.18 | 4.00 | 0.72 | 5 | 0.90 | 5 | 0.90 | |||||
| Light Weight | 0.23 | 5.00 | 1.15 | 4 | 0.92 | 4 | 0.92 | |||||
| Low Cost | 0.08 | 5.00 | 0.4 | 5 | 0.40 | 3 | 0.24 | |||||
| 3.83 | 3.78 | 4.66 |
End Product Description
In this section you will describe:
- The constituent modules and their interrelationships
- The functionality of the product
- The functionality of the different modules
- Present the product specs
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Black Box
- In science, computing, and engineering, a black box is a device, system or object which can be viewed in terms of its inputs and outputs (or transfer characteristics), without any knowledge of its internal workings. Its implementation is "opaque" (black). Almost anything might be referred to as a black box: a transistor, an algorithm, or the human brain.
https://en.wikipedia.org/wiki/Black_box
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Block Diagram
- A block diagram is a diagram of a system in which the principal parts or functions are represented by blocks connected by lines that show the relationships of the blocks. They are heavily used in engineering in hardware design, electronic design, software design, and process flow diagrams.
https://en.wikipedia.org/wiki/Block_diagram
http://www.hobbyprojects.com/block_diagrams/block_diagrams.html
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Level 0 Equalizer Functionality
This is the product description without knowledge of the internal blocks (black box)
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Sheet1
| 0.4761904762 | ||||||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | |||||||
| Sound Quality. | 1 | 5 | 3 | 3 | ||||||
| Easy Equalization | 1/5 | 1 | 1 | 3 | ||||||
| Light Weight | 1/3 | 1 | 1 | 2 | ||||||
| Low Cost | 1/3 | 1/3 | 1/2 | 1 | ||||||
| 1 = equal | 3 = moderate | 5 = strong | 7 = very strong | 9 = extreme | ||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | G. Mean | w | |||||
| Sound Quality. | 1.00 | 5.00 | 3.00 | 3.00 | 2.5900200641 | 0.53 | ||||
| Easy Equalization | 0.20 | 1.00 | 1.00 | 3.00 | 0.8801117368 | 0.18 | ||||
| Light Weight | 0.33 | 1.00 | 1.00 | 2.00 | 0.9036020036 | 0.19 | ||||
| Low Cost | 0.33 | 0.33 | 0.50 | 1.00 | 0.4854917717 | 0.10 | ||||
| Total | 4.8592255762 | |||||||||
| w | ||||||||||
| Sound Quality. | 0.53 | |||||||||
| Easy Equalization | 0.18 | |||||||||
| Light Weight | 0.19 | |||||||||
| Low Cost | 0.10 |
Sheet2
| Audio Input Signal | Audio Equalizer | ||||||
| Equalizer Control | Audio output Signal | ||||||
| Power | |||||||
| Module | Audio Equalizer | ||||||
| Inputs | - Audio input: 1V peak to peak - Power 9 V DC - Equalization Settings | ||||||
| Outputs | Equalized Audio : 1V peak to peak | ||||||
| Functionality | Equalize the input audio signal to provide desired frequency content |
Sheet3
| Option 1 | Option 2 | Option 3 | If a contraint is No | |||||||||
| Constraints | Yes | Yes | Yes | That Option must be Discarded | ||||||||
| Must be Portable | Yes | Yes | Yes | |||||||||
| Add-on to existing MP3 P. | Yes | Yes | Yes | |||||||||
| Objectives | w | |||||||||||
| Sound Quality. | 0.53 | 2.00 | 1.06 | 3 | 1.59 | 5 | 2.65 | 5 is Maximum | ||||
| Easy Equalization | 0.18 | 4.00 | 0.72 | 5 | 0.90 | 5 | 0.90 | |||||
| Light Weight | 0.19 | 5.00 | 0.95 | 4 | 0.76 | 4 | 0.76 | |||||
| Low Cost | 0.10 | 5.00 | 0.5 | 5 | 0.50 | 4 | 0.40 | |||||
| 3.23 | 3.75 | 4.71 |
Level 1 Equalizer Functionality
This a general Description of the internal blocks
Only Pre-AMP table shown. Show a table for each block
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Sheet1
| 0.4761904762 | ||||||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | |||||||
| Sound Quality. | 1 | 5 | 3 | 3 | ||||||
| Easy Equalization | 1/5 | 1 | 1 | 3 | ||||||
| Light Weight | 1/3 | 1 | 1 | 2 | ||||||
| Low Cost | 1/3 | 1/3 | 1/2 | 1 | ||||||
| 1 = equal | 3 = moderate | 5 = strong | 7 = very strong | 9 = extreme | ||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | G. Mean | w | |||||
| Sound Quality. | 1.00 | 5.00 | 3.00 | 3.00 | 2.5900200641 | 0.53 | ||||
| Easy Equalization | 0.20 | 1.00 | 1.00 | 3.00 | 0.8801117368 | 0.18 | ||||
| Light Weight | 0.33 | 1.00 | 1.00 | 2.00 | 0.9036020036 | 0.19 | ||||
| Low Cost | 0.33 | 0.33 | 0.50 | 1.00 | 0.4854917717 | 0.10 | ||||
| Total | 4.8592255762 | |||||||||
| w | ||||||||||
| Sound Quality. | 0.53 | |||||||||
| Easy Equalization | 0.18 | |||||||||
| Light Weight | 0.19 | |||||||||
| Low Cost | 0.10 |
Sheet2
| Audio Input Signal | Audio Equalizer | |||||||||||||
| Equalizer Control | Audio output Signal | |||||||||||||
| Power | ||||||||||||||
| Buffered Input | Constant Amplitude Signal | |||||||||||||
| Audio Input | Equalized Signal | |||||||||||||
| Power 9 V DC | ||||||||||||||
| Module | Pre Amplifier | |||||||||||||
| Inputs | - Audio input: 1V peak to peak - Regulated 5 VDC | |||||||||||||
| Outputs | Low impedance buffered output | |||||||||||||
| Functionality | - Provides high input impedance - Provides low output impedance | |||||||||||||
| DC DC converters required |
Sheet3
| Option 1 | Option 2 | Option 3 | If a contraint is No | |||||||||
| Constraints | Yes | Yes | Yes | That Option must be Discarded | ||||||||
| Must be Portable | Yes | Yes | Yes | |||||||||
| Add-on to existing MP3 P. | Yes | Yes | Yes | |||||||||
| Objectives | w | |||||||||||
| Sound Quality. | 0.53 | 2.00 | 1.06 | 3 | 1.59 | 5 | 2.65 | 5 is Maximum | ||||
| Easy Equalization | 0.18 | 4.00 | 0.72 | 5 | 0.90 | 5 | 0.90 | |||||
| Light Weight | 0.19 | 5.00 | 0.95 | 4 | 0.76 | 4 | 0.76 | |||||
| Low Cost | 0.10 | 5.00 | 0.5 | 5 | 0.50 | 4 | 0.40 | |||||
| 3.23 | 3.75 | 4.71 |
Level 2 Automatic Level
control (ALC)
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Sheet1
| 0.4761904762 | ||||||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | |||||||
| Sound Quality. | 1 | 5 | 3 | 3 | ||||||
| Easy Equalization | 1/5 | 1 | 1 | 3 | ||||||
| Light Weight | 1/3 | 1 | 1 | 2 | ||||||
| Low Cost | 1/3 | 1/3 | 1/2 | 1 | ||||||
| 1 = equal | 3 = moderate | 5 = strong | 7 = very strong | 9 = extreme | ||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | G. Mean | w | |||||
| Sound Quality. | 1.00 | 5.00 | 3.00 | 3.00 | 2.5900200641 | 0.53 | ||||
| Easy Equalization | 0.20 | 1.00 | 1.00 | 3.00 | 0.8801117368 | 0.18 | ||||
| Light Weight | 0.33 | 1.00 | 1.00 | 2.00 | 0.9036020036 | 0.19 | ||||
| Low Cost | 0.33 | 0.33 | 0.50 | 1.00 | 0.4854917717 | 0.10 | ||||
| Total | 4.8592255762 | |||||||||
| w | ||||||||||
| Sound Quality. | 0.53 | |||||||||
| Easy Equalization | 0.18 | |||||||||
| Light Weight | 0.19 | |||||||||
| Low Cost | 0.10 |
Sheet2
| Audio Input Signal | Audio Equalizer | |||||||||||||
| Equalizer Control | Audio output Signal | |||||||||||||
| Power | ||||||||||||||
| Buffered Input | Constant Amplitude Signal | |||||||||||||
| Audio Input | Equalized Signal | |||||||||||||
| Power 120 VAC, 60Hz |
Sheet4
| DC Voltage input | |||||||||||
| Buffered Input Signal | Constant Amplitude Signal | ||||||||||
| Gain Control | Output Sample | ||||||||||
| Module | Pre Amplifier | ||||||||||
| Inputs | - Audio input: 1V peak to peak low impedance - Regulated 5 VDC - Feedback from Microcontroller | ||||||||||
| Outputs | Constant peak value buffered audio signal | ||||||||||
| Each Block is described in detail | DC Voltage input | Functionality | - Samples the module output - Detects the peak values - Adjusts the amplifier's gain | ||||||||
| Repeat as needed to explain all blocks in Level 1 |
Sheet3
| Option 1 | Option 2 | Option 3 | If a contraint is No | |||||||||
| Constraints | Yes | Yes | Yes | That Option must be Discarded | ||||||||
| Must be Portable | Yes | Yes | Yes | |||||||||
| Add-on to existing MP3 P. | Yes | Yes | Yes | |||||||||
| Objectives | w | |||||||||||
| Sound Quality. | 0.53 | 2.00 | 1.06 | 3 | 1.59 | 5 | 2.65 | 5 is Maximum | ||||
| Easy Equalization | 0.18 | 4.00 | 0.72 | 5 | 0.90 | 5 | 0.90 | |||||
| Light Weight | 0.19 | 5.00 | 0.95 | 4 | 0.76 | 4 | 0.76 | |||||
| Low Cost | 0.10 | 5.00 | 0.5 | 5 | 0.50 | 4 | 0.40 | |||||
| 3.23 | 3.75 | 4.71 |
Embedded Systems Require additional Information
Functionality of embedded system requires different approach
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Sheet1
| 0.4761904762 | ||||||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | |||||||
| Sound Quality. | 1 | 5 | 3 | 3 | ||||||
| Easy Equalization | 1/5 | 1 | 1 | 3 | ||||||
| Light Weight | 1/3 | 1 | 1 | 2 | ||||||
| Low Cost | 1/3 | 1/3 | 1/2 | 1 | ||||||
| 1 = equal | 3 = moderate | 5 = strong | 7 = very strong | 9 = extreme | ||||||
| Sound Quality. | Easy Equalization | Light Weight | Low Cost | G. Mean | w | |||||
| Sound Quality. | 1.00 | 5.00 | 3.00 | 3.00 | 2.5900200641 | 0.53 | ||||
| Easy Equalization | 0.20 | 1.00 | 1.00 | 3.00 | 0.8801117368 | 0.18 | ||||
| Light Weight | 0.33 | 1.00 | 1.00 | 2.00 | 0.9036020036 | 0.19 | ||||
| Low Cost | 0.33 | 0.33 | 0.50 | 1.00 | 0.4854917717 | 0.10 | ||||
| Total | 4.8592255762 | |||||||||
| w | ||||||||||
| Sound Quality. | 0.53 | |||||||||
| Easy Equalization | 0.18 | |||||||||
| Light Weight | 0.19 | |||||||||
| Low Cost | 0.10 |
Sheet2
| Audio Input Signal | Audio Equalizer | |||||||||||||
| Equalizer Control | Audio output Signal | |||||||||||||
| Power | ||||||||||||||
| Buffered Input | Constant Amplitude Signal | |||||||||||||
| Audio Input | Equalized Signal | |||||||||||||
| Power 120 VAC, 60Hz |
Sheet5
| Module | Microcontroller | ||
| Inputs | - Audio output sample - Regulated + 5 VDC | ||
| Outputs | - Gain Control Signal | ||
| Functionality |
Sheet4
| DC Voltage input | ||||||||||
| Buffered Input Signal | Constant Amplitude Signal | |||||||||
| DC Voltage input |
Sheet3
| Option 1 | Option 2 | Option 3 | If a contraint is No | |||||||||
| Constraints | Yes | Yes | Yes | That Option must be Discarded | ||||||||
| Must be Portable | Yes | Yes | Yes | |||||||||
| Add-on to existing MP3 P. | Yes | Yes | Yes | |||||||||
| Objectives | w | |||||||||||
| Sound Quality. | 0.53 | 2.00 | 1.06 | 3 | 1.59 | 5 | 2.65 | 5 is Maximum | ||||
| Easy Equalization | 0.18 | 4.00 | 0.72 | 5 | 0.90 | 5 | 0.90 | |||||
| Light Weight | 0.19 | 5.00 | 0.95 | 4 | 0.76 | 4 | 0.76 | |||||
| Low Cost | 0.10 | 5.00 | 0.5 | 5 | 0.50 | 4 | 0.40 | |||||
| 3.23 | 3.75 | 4.71 |
Continue until the next step is to place components
*
Conventions
- Use buses (Thick lines) to represent several connecting lines that have common origin and destination
- Terminate the bus with an arrow head at the destination
- When information flow is bidirectional, place arrows at both ends of the bus
- When possible indicate the number of lines
Conventions
- At some level of detail all individual lines must show
- Images from:
- http://file.scirp.org/Html/1-6401302_42760.htm
- and
- https://en.wikipedia.org/wiki/Control_system
- Remember, stop when the next step is placing components
In Summary
- Describe diagrams in paragraphs with local functionality tables slides (11 to 14)
- Repeat Functionality Tables
- Put level 0 functionality in one table
- Group all level 1 functionality tables in one table
- Repeat for all levels
- At the end of de section include the Technical Specs that you obtained before
*
Example
Diagrams and tables must be explained
Diagrams and tables must be explained
Diagrams and tables must be explained
Diagrams and tables must be explained, as in this case.
Diagrams and tables must be explained
Other Deliverables
- Power Point Presentation
- Final Report
- User Manual
- etc
*
Audio
Equalizer
Input
Amplifier
Automatic
Level
control
ALC
Graphic
Equalizer
Single
Transistor +
OPAMP
Dual OPAMP
Analog
Logarithmic
Amplifier
Microcontroller
+
variable
Gain Amplifie
r
Active Filter
Digital Filter
Pasive Filter
Analog
Filter
AdvantagesDisadvantages
Low CostNot many features
Easy to ImplementLow Signal to Noise ratio
Digital Filter
Graphic Equalizer
Single Transistor +
OPAMP
Dual OPAMP
Analog
Logarithmic
Microcontroller
+ variable Gain
Active Filter
Passive Filter
Input Amplifier
Automatic Level
control ALC
AdvantagesDisadvantages
Moderate CostLow Signal to Noise ratio
Moderate complexity to Implement
Fully Featured
Digital Filter
Graphic Equalizer
Single Transistor +
OPAMP
Dual OPAMP
Analog
Logarithmic
Microcontroller
+ variable Gain
Active Filter
Passive Filter
Input Amplifier
Automatic Level
control ALC
AdvantagesDisadvantages
Moderate CostDesign Complexity
Fully Featured
Higher Signal to Noise ratio
Digital Filter
Graphic Equalizer
Single Transistor +
OPAMP
Dual OPAMP
Analog
Logarithmic
Microcontroller
+ variable Gain
Active Filter
Passive Filter
Input Amplifier
Automatic Level
control ALC
Sound Quality.Easy EqualizationLight WeightLow Cost
Sound Quality.1533
Easy Equalization1/5113
Light Weight1/3115
Low Cost1/31/31/51
1 = equal3 = moderate5 = strong7 = very strong9 = extreme
Sound Quality.Easy EqualizationLight WeightLow CostG. Meanw
Sound Quality.1.005.003.003.002.590020.52
Easy Equalization0.201.001.003.000.8801120.18
Light Weight0.331.001.005.001.1362190.23
Low Cost0.330.330.201.000.3860970.08
Total4.992449
This table compares the relative importance of the objectives.
“Sound Quality is strongly more important than Easy Equalization". (There is a 5 in this cell)
This table is used to determine the weights (importance) of the objectives
total
Mean
G
w
A
A
A
Mean
G
N
N
/
.
)
(
.
1
2
1
=
´
×
×
×
×
×
×
´
´
=
If a contraint is No
ConstraintsThat Option must be Discarded
Must be Portable
Add-on to existing MP3 P.Select option with Highest Score
Objectivesw
Sound Quality.0.523.001.5631.5652.605 is Maximum
Easy Equalization0.184.000.7250.9050.90
Light Weight0.235.001.1540.9240.92
Low Cost0.085.000.450.4030.24
3.833.784.66
Option 3
Yes
Yes
Option 2
Yes
Yes
Option 1
Yes
Yes
Audio Input Signal
Equalizer ControlAudio output Signal
Power
Module
Inputs
Outputs
Functionality
Audio Equalizer
Equalized Audio : 1V peak to peak
- Audio input: 1V peak to peak
- Power 9 V DC
- Equalization Settings
Equalize the input audio signal
to provide desired frequency content
Audio Equalizer
Buffered InputConstant Amplitude Signal
Audio InputEqualized Signal
ModulePre Amplifier
Inputs
Outputs
Functionality
DC DC converters required
Power 9 V DC
- Audio input: 1V peak to peak
- Regulated 5 VDC
- Provides high input impedance
- Provides low output impedance
Low impedance buffered output
Pre AmplifierAutomatic Levelcontrol (ALC)Digital FilterPower Supply
Buffered Input SignalConstant Amplitude Signal
Gain ControlOutput Sample
ModulePre Amplifier
Inputs
- Audio input: 1V peak to peak low impedance
- Regulated 5 VDC
- Feedback from Microcontroller
OutputsConstant peak value buffered audio signal
Each Block is described in detail
Functionality
- Samples the module output
- Detects the peak values
- Adjusts the amplifier's gain
Repeat as needed to explain all blocks in Level 1
DC Voltage input
DC Voltage input
Variable GainAmplifierMicrocontroller
Module
Inputs
Outputs
Functionality
- Audio output sample
- Regulated + 5 VDC
- Gain Control Signal
Microcontroller
Start
Sample
Audio
Output
Low
Level?
Amplify Control
High
Level?
Attenuate Control
Yes
Yes
No
No
I. CONCEPT DEVELOPMENT
The objective of this section is to make a concept fan of all the possible options of
implementing this project. We will analyze all the different implementations of this project in
order to obtain an option which is viable and fits the needs of the client. It will need to meet our
objectives and constraints in the most efficient way, while taking our assumptions and limitations
into consideration. After analyzing all of the alternate options , we will construct a concept
selection table with a weighted average in order to select the best concept to follow.
The concept fan is a chart which shows all the different alternatives that we can choose from
to arrive at the same objectives. After analyzing the concept fan, we will use the weighted table
to determine which option proves to be the most viable. Figure 19 shows the concept fan chart,
which was derived through brainstorming and analysis of the objectives.
The chart in Figure I-1 first names our main objective which is to develop a telemetry band.
The second level of the cha rt shows the different parts that are needed in order to arrive at the
objective. Basically, we will need a user interface, transmitter, receiver, and control unit in order
to achieve our design objectives. Each of the parts has its own set of components t hat are needed
to fulfill that part. The user interface is the way in which the user will interact with the device.
The transmitter will be responsible for transmitting power to the receiver, which will possibly
demodulate the signal. The control unit will be used to control all of the various sensors and
components which will be used in the arm band.
Figure I-1. The Concept Fan Chart
In the following sections we will present and analyze alternate soluti ons and implementations
for the Telemetry Band. Once the best option is found, it components, inputs, outputs, and
functions will be analyzed.
low-power RFID, which in turn uses backscatter modulation. All of the processes will be
controlled by the ARM microcontroller, which introduces the advant age of compatibility with
C++, which most of our team is familiar with. The main advantages include direct control of the
arm band, low-power operation, and ease of programming due to familiarity with computer
programing.
a) Disadvantages
The disadvantage of using the computer as the user interface is that it limits the mobility of
the arm band by needing a bulky device in order to receive and read the measurements. Also, the
command-based user interface will require more complex programming. To modulate the power
signal with BPSK also introduces increased circuit complexity, more components, and greater
power consumption in the arm band. Using RFID will also require complex circuitry so that it
can use the existing SCMR antenna. This will also present increased cos t due to the need to have
a demodulator circuit in the receiver as well as an RFID transmitter.
