Advanced Rowing Instruments – Business Plan & Final ... - Saket Vora

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in the embedded code. The AY0438 chips accept a serial data bitstream from the microcontroller and activate the corresponding segments of each digit. Each AY0438 chip can drive 4 digits. The Mercury has 8 digits to drive: six for HH:MM:SS and two for the stroke rate. The AY0438 chips can be cascaded, so two chips are used in the Mercury model. For these reasons, just three control lines are needed for the microcontroller to drive the entire display. 4.5 Interface 4.5.1 Control Buttons Primary control of the device is performed using four control buttons mounted to the faceplate: power, run, pause, and reset. The power button is used to start and stop operation of all systems within the device. When the device is powered up, the ARI logo will automatically flash across the LCD before initializing the timer and stroke rate displays. The run button is used to start the timer and the stroke rate calculation. The pause and run buttons are then used to pause and continue the timer. The reset button is used to reset the timer to 0:00:00.0. 4.5.2 Audio Connectors and Volume Control The coxswain microphone is connected using a standard BNC connector. The speaker output consists of an Amphenol Series 44 5-pin connector. Both of these match the current standard connector types for coxswain microphones and speaker systems. This allows the Mercury and Titan to interface with the customer’s existing infrastructure. Eventually, these connectors will interface with the ARI coxswain microphone and ARI speaker system as well. The volume of the audio amplifier is controlled by a vertically mounted scroll wheel on the faceplate. The wheel is recessed into the faceplate for added durability. 4.5.3 Other Indicators In addition to the liquid crystal display, the Mercury and Titan both include a red LED to indicate power. This LED is also used to indicate battery low when flashing. The Titan will include an additional button to activate/deactivate Bluetooth telemetry and a blue LED to indicate active Bluetooth connection. The Titan will also include an additional red LED to indicate proper installation of an SD card. 4.6 Board Interconnects The inner structure of the Mercury is compromised of 3 circuit boards. The top board (A1) contains the LCD, LCD driver ICs, and all button and LED connections to interface with the faceplate. The middle board (B1) houses the the PIC18 microcontroller and the accelerometer board, including the voltage follower used to interface the sensor with the PIC. Additionally, the prototype of the Mercury includes an In-Circuit Debugger connector that can be used to flash the microcontroller and test the embedded code without removing any components. The bottom board (B2) contains the audio amplifier, pre-amplifier circuit for the microphone, and the power management circuitry. In order to improve communication between circuit boards and facilitate this 3 board approach, a system of board interconnects were used. The primary interface between the boards consists of 44
a series of single line pins that function as a single bus for all interboard communication. Custom connector cables are used to connect the pin headers of each board, with one connection running between each board (i.e. A1-B1, A1-B2, and B1-B2). The structure of each of these connections places power rails at the first pin and ground rails at the last pin, to keep power lines clean. Communications signals are then added in between. In addition to the primary commmunication interface, the bottom board (B2) was fabricated as a PCB (printed circuit board) and utilizes PCBmount screw terminals for external wires running to the battery, microphone BNC jack input, and speaker output. This allows for both a solid electrical connection, and a secure mount to the board that is easy to disassemble as necessary. 4.7 Media Storage A key distinguishing feature of our CX model is that it allows for the acceleration data (sampled at up to 100 times a second) and the coxswain’s voice to be recorded for multiple races. This data will be stored inside the CX on a SecureDigital card, a widely available digital storage solution. SecureDigital’s advantages over its CompactFlash is that it is smaller and consumes less power. Utilizing a SecureDigital card also enables the end user to adjust how much storage is available, from 16 MB to 1 GB. The SecureDigital card slot, mounting, and interface is available through electronic parts distributors such as DigiKey. This will be incorporated into our device in an easy to reach location that is available when the CX is twisted and opened using the modular case design. Data is stored on the SecureDigital card through the microprocessor which handles the real-time audio encoding. Additionally, a computer data port can be included on the front plate of the CX behind a waterproof cover that will allow the data to be transferred directly off the CX onto a computer. 4.8 Microcontroller 4.8.1 General Considerations Many factors were taken into account regarding the microcontroller. In addition to the discrete hardware requirements, discussed in the next section, form factor, development kit availability, and power consumption. In the general sense, power consumption scales with chip complexity and speed. Thus, a processor that can complete the specified instuctions at the lowest frequency will consume the least power and is more desirable than a higher power model. In addition to power, form factor is a major concern. Becuase early in the development process, ARI will not have access to surface mount equipment. Because of this, processors that are packaged in both easy-to-use PDIP packages and compact QFP packages. <strong>Final</strong>ly, to develop a product effectively, an easy-to-use development kit is vital. This must include a programmer and minimal support circuitry. 4.8.2 Requirements Multiple microcontrollers were examined for use in both the Mercury and Titan models. A number of requirements were seen for each of the product lines, as can be seen in table 4.8.2. For control purposes, digital input and output pins are needed for each model. In addition, each model requires 45
Page 1 and 2: Advanced Rowing Instruments WIN BAS
Page 3 and 4: Acknowledgments Special thanks go t
Page 5 and 6: 2.8.1 Phase One . . . . . . . . . .
Page 7 and 8: Part I Executive Summary 5
Page 9 and 10: patentable technologies due to prio
Page 11 and 12: Chapter 1 Introduction to Rowing Na
Page 13 and 14: slide backward. It is during this p
Page 15 and 16: Chapter 2 Business 2.1 Business Mod
Page 17 and 18: sports markets. 2.2 Marketing 2.2.1
Page 19 and 20: Figure 2.3: Level of Concern for Co
Page 21 and 22: Figure 2.5: What People Would Pay f
Page 23 and 24: and the spring season begins in Mar
Page 25 and 26: Figure 2.9: Financial Projections &
Page 27 and 28: 2.4 Competition 2.4.1 Overview Due
Page 29 and 30: • Modular design for easy mainten
Page 31 and 32: include any functional claims. They
Page 33 and 34: 2.6.3 Chief Competitors’ intellec
Page 35 and 36: with relatively low volume, high te
Page 37 and 38: Chapter 3 Corporate Structure 3.1 M
Page 39 and 40: For the prototype development, Ever
Page 41 and 42: Part III Product Development 39
Page 43 and 44: To reduce noise, the Freescale acce
Page 45: taper trim potentiometer was used b
Page 49 and 50: Chapter 5 Embedded Software 5.1 Var
Page 51 and 52: approximately two seconds until the
Page 53 and 54: 5.6 Stroke Rate Calculation Figure
Page 55 and 56: Figure 6.1: ARI software mockup % R
Page 57 and 58: % create waitbar h = waitbar(0,’C
Page 59 and 60: GITERATIONNUM = ceil(fSize/GBUFFERS
Page 61 and 62: %//////////////////////////////////
Page 63 and 64: end while (length(rate) ~= m) rate
Page 65 and 66: 7.3 Modular Battery A repeated comp
Page 67 and 68: Part IV Appendices 65
Page 69 and 70: Advanced Rowing Instruments Project
Page 71 and 72: March 2007 Sunday Monday Tuesday We
Page 73 and 74: April 2007 Sunday Monday Tuesday We
Page 75 and 76: Appendix C Design Day Plans 73
Page 77 and 78: Marketing Figure C.2: ARI Design Da
Page 79 and 80: MERCURY DATA-DRIVEN DECISIONS 77 Fi
Page 81 and 82: Appendix D Functional Specification
Page 83 and 84: Appendix E Virtual Employee Job Des
Page 85 and 86: Advanced Rowing Instruments Interna
Page 87 and 88: Appendix F Call Logs 85
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Appendix H Component Datasheets (Se
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1 TMS320VC5509A Features � High-P
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High-Performance Modified RISC CPU:
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The Freescale accelerometer is a su
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+X X OUT @ +1g = 2.13 V Y OUT @ 0g
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® DESCRIPTION The TDA 2003 has imp
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Appendix I Industrial Design Docume
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Figure I.1: Refined Final Design 11
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Figure I.3: Final Design Direction
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Figure I.5: Case Top View 118
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Figure I.7: Case Bottom View 120
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Figure I.9: Case Side View 122
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RI Coaches Survey file:///C:/Docume
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ARI - Email Correspondence with Eam
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Advanced Rowing Instruments Near Co
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FAT, 51 features, 52 foam model, 74
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