PDA Based Marine Instrumentation End Product Design Senior Design Dec04-08 Client David Sneitzer Faculty Advisors Gerald Sheble Team Members Ritesh Desai Michael Myers Jacob Huber Sean Genter May 5th, 2004 DISCLAIMER: This document was developed as a part of the requirements of an electrical and computer engineering course at Iowa State University, Ames, Iowa. This document does not constitute a professional engineering design or a professional land surveying document. Although the information is intended to be accurate, the associated students, faculty, and Iowa State University make no claims, promises, or guarantees about the accuracy, completeness, quality, or adequacy of the information. The user of this document shall ensure that any such use does not violate any laws with regard to professional licensing and certification requirements. This use includes any work resulting from this student-prepared document that is required to be under the responsible charge of a licensed engineer or surveyor. This document is copyrighted by the students who produced this document and the associated faculty advisors. No part may be reproduced without the written permission of the senior design course coordinator. Project Plan – PDA Based Marine Instrumentation Table Of Contents 1. Introduction .................................................................................................... 1 1.1. Abstract .................................................................................................. 1 1.2. Acknowledgment .................................................................................... 1 1.3. Problem Statement ................................................................................. 1 1.3.1. Problem ........................................................................................... 1 1.3.2. Solution ........................................................................................... 2 1.4. Operating Environment ........................................................................... 3 1.5. Intended Users and Intended Uses ........................................................ 3 1.5.1. Intended User(s) .............................................................................. 3 1.5.2. Intended Use(s) ............................................................................... 3 1.6. Assumptions and Limitations .................................................................. 3 1.6.1. Assumptions .................................................................................... 4 1.6.2. Limitations ....................................................................................... 4 1.7. Expected end product and other deliverables......................................... 5 2. Proposed Approach and Product Design Results .......................................... 6 2.1. Approach Used ....................................................................................... 6 2.1.2. Functional Requirements ................................................................. 6 2.1.3 Design Constraints .......................................................................... 7 2.1.3. Technical Approach Considerations and Results ............................ 7 2.1.4. Testing Approach Considerations ................................................... 8 2.1.5. Recommendations Regarding Project Continuation or Modification 8 2.2. Detailed Design .................................................................................... 10 2.2.1. List of Parts ................................................................................... 10 2.2.2. Base Computer Design ................................................................. 11 2.2.3. Data Acquisition Flow Chart .......................................................... 15 3. Estimated Resources and Schedules .......................................................... 18 3.1. Estimated Resource Equipment ........................................................... 18 3.1.1. Personnel Effort Requirement ....................................................... 18 3.1.2. Other Resource Requirements ...................................................... 19 3.1.3. Financial Resource Requirements ................................................ 20 3.2. Schedules ............................................................................................. 21 4. Closure Materials ......................................................................................... 25 4.1. Project Team Information ..................................................................... 25 4.1.1. Client Information .......................................................................... 25 4.1.2. Faculty Advisor Information ........................................................... 25 4.1.3. Student Team Information ............................................................. 26 4.2. Closing Summary ................................................................................. 26 Senior Design Dec04-08 I Project Plan – PDA Based Marine Instrumentation List of Figures Figure 1- 1: Miniature Motherboard for Processing ............................................... 2 Figure 2- 1 : Anemometer ................................................................................... 11 Figure 2- 2: Compass Copyright © 2004 PNI Corp ............................................. 12 Figure 2- 3: PIC 16f8873 ..................................................................................... 12 Figure 2- 4: PDA - Zaurus © 2004 Sharp Electronics Corp................................. 12 Figure 2- 5: Linx RF Module ............................................................................... 12 Figure 2- 6: System Component Diagram ........................................................... 14 Figure 2- 7: Sensor Flow Chart ........................................................................... 15 Figure 2- 8: Display mock up .............................................................................. 16 Figure 2- 9: Display program flow chart .............................................................. 17 Figure 3- 1: Gantt chart - Tasks vs Proposed Project Calendar .......................... 22 Figure 3- 2: Gantt chart - Project Deliverable Schedule ...................................... 24 Senior Design Dec04-08 II Project Plan – PDA Based Marine Instrumentation List of Tables Table 2-1: List of parts ........................................................................................ 11 Table 3-1: Original Personnel Effort Requirements............................................. 18 Table 3-2: Revised Personnel Effort Requirements ............................................ 18 Table 3-3: Original Other Resource Requirements ............................................. 19 Table 3-4: Revised Other Resource Requirements ............................................ 19 Table 3-5: Original Financial Resources Requirements ...................................... 20 Table 3-6: Revised Financial Resources Requirement ....................................... 21 Table 4-2: Faculty Advisor Information ............................................................... 25 Table 4-3: Team Member Information................................................................. 26 Senior Design Dec04-08 III Project Plan – PDA Based Marine Instrumentation 1. Introduction Introductory topics develop an overview of the end product and specify design issues as given by the user. The introductory section covers seven main areas: abstract, acknowledgement, problem statement, operating environment, intended users and intended use, assumptions and limitations, and finally the expected end product and other deliverables. 1.1. Abstract The sponsor of this project envisions a system that uses a PDA as a marine multi-function instrument to display the following functions as a minimum: wind speed, wind direction, boat directional orientation and true heading, and boat speed. Additional parameters may be added as determined by the team and sponsor. The unit shall operate in wireless mode using low cost sensors and transceivers. The project end product will be a working prototype including both hardware and software and all design data. The sponsor has available anemometers, flux detectors, and software tools for use in the project. The final product may be marketed as a low cost electronic kit and as a slightly higher cost completed unit. 1.2. Acknowledgment The team would like to acknowledge Mr. David Sneitzer for the design input and the original idea of this project. The team would also like to thank Professor Sheble for his input and consultations on this project. 1.3. Problem Statement The problem statement consists of two areas: the problem and the solution. These statements shall provide the reader with a general overview of the problem and the approach that will be used to solve the problem. This is included so that the reader will have the correct conception of the problem and the solution approach upfront. 1.3.1. Problem The end deliverable of this project is to provide a unit that measures speed, direction, and other useful information to correctly and efficiently sail a boat. The intended user for this unit is an experienced sailor. The design is to withstand a marine environment, and also allow the user to sail the boat efficiently. The user interface must allow for the sailor to access the data through a wireless connection. Also a stand alone display will be included on the unit for sensors to display their information. In addition to all hardware, a water proof unit must be designed to protect the circuitry. Senior Design Dec04-08 1 Project Plan – PDA Based Marine Instrumentation 1.3.2. Solution The overall system will consist of three different components. There will be sensors, a PIC, and a display unit. The PIC will gather data and send it wirelessly to the display unit. The PIC and display unit will need to be housed in a watertight, non-corrosive box to protect it from the harsh oceanic conditions. Off-the-shelf sensors will be used for measuring the various attributes of the current sailing conditions. An anemometer will measure wind speed and direction. A knot meter will measure boat speed. A compass will determine the orientation and heading of the boat. A PIC will be programmed to collect all of the data from the sensors and send it to the display unit. The PIC will interface with pulse counting circuits for devices that output pulses, such as the knot meter. Analog-to-digital conversions will be performed on the PIC for the anemometer wind direction. The serial input on the PIC will be used to get data from the compass. The output from the serial port will be sent to a wireless transmitter. The display will consist of a wireless receiver connected to a PDA. The display will give a graphical representation of the measured data. The PDA will be powered by it’s own batteries, and it not a major concern for power consumption. The wireless receiver may need a separate battery. The PDA will be similar to the one shown below. Figure 1- 1: Miniature Motherboard for Processing Senior Design Dec04-08 2 Project Plan – PDA Based Marine Instrumentation 1.4. Operating Environment The PDA-Based Maine Instrumentation is intended to be modular kit which contains a self-contained system, along with several measurement devices which are to be placed on different locations on the boat. All circuits will be mounted into a self-contained water-proof unit which can be placed on or near the controls of a boat. Possible environmental hazards include excessive rocking and tilting, heat, cold and condensation, dust, salt air, and dirt. Possible hazards on the measuring equipment include dust, and dirt build up, salt air, and excessive environmental conditions. 1.5. Intended Users and Intended Uses This subsection shall include two separately identified components: the intended user and the intended use. To properly design an end product that will provide the maximum satisfaction and perform in the most efficient manner, it is essential to understand the end user and the associated end uses. 1.5.1. Intended User(s) The intended users are sailors. Anyone that is seeking to get better performance from their sailboat should be able to make use of this device and intend its usage to be straightforward and user-friendly. The design of this project is mainly oriented towards sailors that do some racing, as performance is more crucial to these individuals. The device will also be beneficial to other sailors that seek to save time and effort. 1.5.2. Intended Use(s) The device will measure many aspects of the current sailing conditions. These conditions will then be displayed on a wireless display. The device will be waterproof and rugged enough to operate in a marine environment that can be harsh on electronics. The device will also need to use off the shelf components in preparation for the inevitable breakdown due to conditions. 1.6. Assumptions and Limitations This subsection describes design assumptions and limitations taken prior to development. Although these are flexible and may change, the majority shall remain integral components to the design process. The assumptions are made in regard to specific uses and functionality, while the limitations are taken in regard to operating environment and power availability. Senior Design Dec04-08 3 Project Plan – PDA Based Marine Instrumentation 1.6.1. Assumptions The main assumption with this project is that the algorithms that sailors have been using are the best since the team currently has no experience with. Another assumption is that off the shelf electronics will hold up in a marine environment. If this is not the case it will require some major redesign of the project as it stands. The team is assuming that the sailor has knowledge and experience in sailing and is capable of determining a navigational course. The sailor will be able to steer the ship according to directions given by a navigation device. 1.6.2. Limitations Conditions are often hard on electronics. If conditions dictate, specialized components may need to be used to handle the environmental conditions. There will be limited power available on the ship. Generators may not always be used, therefore the device must be low power. The batteries are marine class, so they are expensive and not economical to add extra power to a ship. The unit must be of limited size and weight so that it does not interfere with normal boat operations. It must not exceed 8 inches wide by 8 inches deep by 4 inches tall. The sensors for data acquisition will most likely be permanent due to their hard-to-reach locations on the ship. The display module will be portable, but will not work without the sensors. Power will be available from the battery on the boat. However, the voltage is only guaranteed to be within 8 to 16 volts. Many boats do not have battery chargers, so energy efficiency is important. The compass is limited to 2 degree accuracy. The other sensors should be within 5% of the actual value being measured. The device must have a water-tight enclosure to prevent shortages. The length of a data cycle must not exceed 2 seconds. One second or less is preferred. Senior Design Dec04-08 4 Project Plan – PDA Based Marine Instrumentation 1.7. Expected end product and other deliverables The ideal end product will be a kit that is made of off the shelf input components that will be marketable to sailors. To prevent the design from being “borrowed” by others, most of the processing on a microcontroller so that the code is not as accessible. The kit will need a complete set of instructions so that any user can install and configure it for their boat. Besides the end product, other deliverables will be produced. This will include a project plan, a project poster, and design notebooks. A document outlining the overall design will be produced for the client and for any future development. Additional deliverables include: Weekly progress report to client Oral presentation of design results to client Bound revised design/progress reports Senior Design Dec04-08 5 Project Plan – PDA Based Marine Instrumentation 2. Proposed Approach and Product Design Results This section will address the components of the project that must be met in order to maintain a high probability of success. Also included in this section will be a listing of what the end product is expended to do, and not to do. 2.1. Approach Used The following components are essential to the success of the project. In order to maintain the highest probability of success, each component will be analyzed thoroughly. 2.1.1. Design Objectives The following items will be implemented based on the problem statement in the project plan document. Gather input from sensors. Gathering input from sensors will allow the unit to compute and then forward the data in the correct format for the display unit. The sensors in the system are: 1. Anemometer (wind speed and direction) 2. Knot meter (boat speed) 3. Compass Process input. The input data will be manipulated and forwarded to the display unit. Display data. The display unit will receive data from the central unit and display it for the user. The user should not have a difficult time reading the display under operating conditions. 2.1.2. Functional Requirements The following functional requirements address what the final project will, and will not, do. Sensor Readings The unit should detect wind speed, heading, wind direction, and boat speed. The inputs provide all the necessary information to map out where the boat is relative to its surroundings. Durable, Accurate, and Low Cost The unit must be able to survive in a marine environment. It has to be accurate for the user to even want it. The complete cost of the unit should be reasonable and competitive. Senior Design Dec04-08 6 Project Plan – PDA Based Marine Instrumentation Provide wireless graphical output to the user There will be a wireless transfer of sensor readings to a PDA for the user to read. 2.1.3. Design Constraints In the development of the project there are several constraints that need to be considered. Each constraint causes a limitation on the design and functionality of the project. Cost The system shall be at reasonable price to the consumer who is in search of a multi functional unit. It shall be priced competitively along with similar products with less or few features as the proposed design. Power Consumption The system must have minimal power consumption since marine batteries are expensive, and hard to change while sailing. The power consumption is also limited by the usage of the unit while sailing. Size The main source to display will be the screen of a PDA. These dimensions vary depending on the PDA, however the data being wirelessly sent will be the same 2.1.4. Technical Approach Considerations and Results There are several aspects to the system that required further research. For all components of the system, each component will optimize cost, mobility and performance. Some considerations are the following: Display: Display PDA-based display A PDA could be purchased and a simple display application built. The disadvantage of this approach is it requires more communication than a custom display. It is also more expensive. The advantage is that the PDA is portable, so the display can move anywhere on the boat. The display application could also be designed separately from the data acquisition unit. This is the preferred approach for the display. Data Acquisition: PIC-based A PIC will be used to collect data from all of the sensors. In the cases of pulse outputs of a sensor, a separate pulse counting chip will be used to reduce the amount of complexity in the PIC. Analog-to-digital, serial, and digital inputs will be used to get the data. The advantage of this approach is a very simple design for the program on the PIC. Senior Design Dec04-08 7 Project Plan – PDA Based Marine Instrumentation Communication Serial cable Using a serial cable for communication between the data acquisition unit and the display is the easiest. The disadvantage of this approach is low mobility. The display would only be able to travel as far as the cable allows. The cable could also get tangled on the boat, or cause a safety hazard. Wireless communication A serial-wireless-serial chipset will be used in place of a physical serial cable. This allows high mobility without the inconveniences of a cable. The disadvantage of this approach is making the system more complex and costly. This is the preferred approach for communication in the system. This is the preferred method of communication. 2.1.5. Testing Approach Considerations The PIC will be tested by attaching a function generator or a variable voltage supply to its inputs. The data output onto the serial connection will contain the values that the PIC is receiving. These values may then be compared against the actual input as measured by an oscilloscope or voltmeter. If the values are incorrect, some calibration values may be applied to the input values to get more accurate output. The output values from the compass will be compared with a mechanical compass to ensure that the values are correct. If there is any discrepancy, a calibration may need to be applied. The compass will be tested at different orientations, and tilted angles to ensure that its output is accurate if the boat is not perfectly vertical. The anemometer wind speed and knot meter will be spun at multiple specified speeds. The output will allow the team to determine if the pulses portray the speed correctly. The anemometer wind direction will be tested at many orientations to ensure that the output is correct. The output relies on an analog device to output a voltage. Since it is analog, it is likely that the output is not perfectly linear. Because of this, the limits of the output will need to be determined, fit to a line and a calibration equation created. This equation will then be applied to the output and compared to the actual position of the vane. 2.1.6. Recommendations Modification Regarding Project Continuation or The project should be possible to complete without many modifications. Original specifications stated that navigation would be part of the system. Current Senior Design Dec04-08 8 Project Plan – PDA Based Marine Instrumentation analysis has determined that it would be very difficult and time consuming to produce such an algorithm. Navigation will not be part of the end product. A PalmOS based PDA was supplied at the beginning of the project. This PDA is severely outdated and may be difficult to program. A newer Windows CE or Linux based PDA would allow a higher quality program to be developed. The recommended PDA for this project is a Sharp Zaurus since it runs Linux for its operating system. The user interface uses Qt from Trolltech (http://www.trolltech.com). This would allow rapid development of the user interface allowing for more time to be spent on calibrating the data. Senior Design Dec04-08 9 Project Plan – PDA Based Marine Instrumentation 2.2. Detailed Design This section provides a detailed description of the chair mounted workstation and its parts. The following text is broken into groups: list of parts, base computer design, and wireless design. 2.2.1. List of Parts In Table 2-1 below, a detailed list of parts is shown. Headings for this table include “Part Type”, “Part #”, “Part Source”, and “Cost”. (Note: “Cost” is an estimated value based on current price quotes.) Senior Design Dec04-08 10 Project Plan – PDA Based Marine Instrumentation Table 2-1: List of parts Part type PIC Anemometer Knot Meter Compass Wireless chipset PDA - Zaurus Breadboard Part # PIC16F873 Part Source Quantity 1 Cost $10.00 7911 www.davisnet.com 1 1 1 1 $120.00 $150.00 $50.00 $20.00 1 1 290.00 $10.00 Total: $650.00 Vector 2x www.precisionnav.com TXM-433-LC-R www.digikey.com SL-5600 2.2.2. Base Computer Design This section contains information relating to the core components, display unit, and case/mounting apparatus of the computer mounted workstation. 2.2.2.1. Core Components The chosen components that were within the budget of what the client considered reasonable but would still meet the performance levels required from the operating system and applications planned for installation and use. Many of these parts are standard and can be purchased from a computer store or online. The anemometer senses both wind speed and wind direction. It was provided by the sponsor. Figure 2- 1 : Anemometer Senior Design Dec04-08 11 Project Plan – PDA Based Marine Instrumentation The Vector 2X is smaller in size, consumes less power, and is much less expensive than alternative compasses or magnetic sensors. It is a complete compass or magnetic sensor module that easily integrates into any system. The module will apply correction for hard iron distortion to compensate for magnetic interference in harsh environments. Figure 2- 2: Compass Copyright © 2004 PNI Corp The PIC16F873 meets all the requirements for our multi-sensor prototype. It has a program memory of 4K words, RAM memory of 192 bytes, and EEPROM of 128 bytes. It has three kinds of timers, AD converters, and a Universal communication port. Figure 2- 3: PIC 16f8873 The Sharp Zaurus SL-5600 is the preferred PDA. The end-product of the design will not be limited to this PDA model or platform. It provides the display we will use for the prototype. Figure 2- 4: PDA - Zaurus © 2004 Sharp Electronics Corp The Linx LC series RF transmitter and receiver offers a large reliable range and ease of use. Figure 2- 5: Linx RF Module Senior Design Dec04-08 12 Project Plan – PDA Based Marine Instrumentation 2.2.2.2. Serial Packet Definition The communication between the data acquisition unit and the display will be a serial connection. A text packet will be assembled with hexadecimal values. There will be a header on the packet which is always set to 0xFF, or all bits on. All of the values will be in big-endian form (most significant byte first). Each value from a sensor will have 16 bits of data space which occupies 4 bytes of character data. At the end of each packet there will be an 8-bit checksum. This will be calculated using Formula N.1. The total packet size is 20 bytes. Header Format: 0xFF Knot Anemometer Anemometer Compass Checksum Meter -Speed - Direction 16-bit hex 16-bit hex 16-bit hex 16-bit hex 8-bit hex Formula N.1: Cn = ( Cn-1 + dn ) mod 256 2.2.2.3. Data Acquisition System Diagram The data acquisition system will be composed of four different modules. The main component in the system is the PIC (programmable interface controller). It will have multiple analog-to-digital inputs and digital input/output ports. It will also feature a serial port interface. The compass will connect to the serial port input. The anemometer has two parts, the wind speed will connect to a pulse counter and the direction will be connected to an A/D input. The knot meter will also be hooked into a pulse counter. The PIC will then process the information and send a packet over the serial bus to a display unit. Senior Design Dec04-08 13 Project Plan – PDA Based Marine Instrumentation Figure 2- 6: System Component Diagram Senior Design Dec04-08 14 Project Plan – PDA Based Marine Instrumentation 2.2.3. Data Acquisition Flow Chart The program on the PIC will be extremely simple. Figure N.X shows a flow chart of the program that will be run on the PIC. The unit will be powered on and start a repeating timer. When the timer is signaled, the PIC will get the data from all of its inputs. The input data will then be converted into hexadecimal ASCII for transmission over the serial port. Before the packet is sent, a checksum will be calculated and attached to the end of the packet. After the packet is sent, it will wait until the timer has expired again to repeat the process. Figure 2- 7: Sensor Flow Chart Senior Design Dec04-08 15 Project Plan – PDA Based Marine Instrumentation 2.2.3.1. Display Application The display will be a PDA. There will be no user input at this time. Data will be displayed graphically, and as text. Figure N.X shows a possible version of the user interface. There are four display areas, each displaying an attribute collected by the data acquisition device. Figure 2- 8: Display mock up 2.2.3.2. Display Program Flow Chart The display program will startup and wait for incoming data on the serial port. After a packet has been read, the program will check the checksum of the packet. If the checksum is incorrect, then the data will be ignored. If the checksum is correct the data will be displayed. Senior Design Dec04-08 16 Project Plan – PDA Based Marine Instrumentation Figure 2- 9: Display program flow chart Senior Design Dec04-08 17 Project Plan – PDA Based Marine Instrumentation 3. Estimated Resources and Schedules Knowledge of estimated resource requirements and the project schedule are essential to the proper evaluation of a project plan. This section will discuss both topics in detail. 3.1. Estimated Resource Equipment Three separate resources make up the estimated resource requirements: personal effort requirements, other resource requirements, and financial requirements. These three topics will be discussed and evaluated in this subsection. 3.1.1. Personnel Effort Requirement Table 3-1Error! Reference source not found. displays an in-depth estimate of the personal effort of each team member in this project. Error! Reference source not found. Table 3-2 is a revised estimate of the original table. These tables display this personal effort on an individual basis as well as a total of all efforts required per task item. An estimate of one hour per meeting with the adviser and the special group meetings over the length of the course are the factors included in the meetings column. The project reports column will include each project report that the group has to collaborate and write as well as the weekly progress reports. Other project documentation that may be involved is also included. The project column is for the actual project work, including parts ordering, poster construction, testing, and assembly. In addition to the previous list, a buffer has been added for emergency tasks that may arise. The estimates are also based on the projected effort required to perform the task correctly. Table 3-1: Original Personnel Effort Requirements Personnel Name Ritesh Desai Michael Myers Jacob Huber Sean Genter Totals Meetings Project Reports Project Construction Totals 45 45 45 45 180 40 35 50 35 160 65 65 55 60 245 150 145 150 140 585 Table 3-2: Revised Personnel Effort Requirements Personnel Name Ritesh Desai Michael Myers Jacob Huber Sean Genter Totals Meetings Project Reports Project Construction Totals 45 45 45 45 180 30 35 40 35 140 75 75 60 65 275 150 155 145 145 595 Senior Design Dec04-08 18 Project Plan – PDA Based Marine Instrumentation The changes between the two tables have occurred because of various reasons. First, the hours for the meetings have increased because of more than expected unscheduled meetings to make sure certain deadlines are met and all members are agree on critical issues. 3.1.2. Other Resource Requirements Table 3-3Error! Reference source not found. shows the original other resource requirements whereas Table 3-4 shows the revised other resource requirements. The cost of the project poster was lower than projected and adjusted according to what the actual cost was as well as the hours associated with it. Table 3-3: Original Other Resource Requirements Item Project Poster Mounting Equipment Totals Team Hours 10 3 13 Other Hours 0 0 0 Cost $65.00 $45.00 $110.00 Table 3-4: Revised Other Resource Requirements Item Project Poster Mounting Equipment Totals Senior Design Dec04-08 Team Hours 12 3 15 Other Hours 0 0 0 Cost $55.00 $45.00 $100.00 19 Project Plan – PDA Based Marine Instrumentation 3.1.3. Financial Resource Requirements Table 3-5Error! Reference source not found. includes an item-by-item cost estimate in addition to the original overall project cost estimate. Error! Reference source not found. Table 3-6 s an item-by-item cost estimate that is a revised version from the original. These tables includes all items needed to complete the project successfully; hardware, software, and miscellaneous. Table 3-5: Original Financial Resources Requirements Item Hardware: Accelerometer Wireless Transmitter Knot meter Anemometer PIC Subtotal Price $100.00 $100.00 $100.00 $140.00 $100.00 $540.00 Software: Wireless Software Subtotal $175.00 $175.00 Miscellaneous: Project Poster PDA Fabrication Materials Subtotal $60.00 $200.00 $65.00 $325.00 Total $1040.00 Senior Design Dec04-08 20 Project Plan – PDA Based Marine Instrumentation Table 3-6: Revised Financial Resources Requirement z Hardware: Compass Wireless Transmitter Knot meter Anemometer PIC Subtotal Price $50.00 $20.00 $150.00 $120.00 $10.00 $330.00 Miscellaneous: Project Poster PDA Fabrication Materials Subtotal $55.00 $290.00 $65.00 $415.00 Total $745.00 The cost of the project poster was lower than projected and adjusted according to what the actual cost was as well as the hours associated with it. All of the major system components have been specifically identified and thus a more static cost has been associated with them, all reflected in.Error! Reference source not found. 3.2. Schedules A realistic, well-planned schedule is an essential component of every wellplanned project. Most scheduling errors will occur as a result of either not properly identifying all of the necessary activities or not properly estimating the amount of effort required to correctly complete the activity. Two types of schedules are shown in this section. The first schedule is Error! Reference source not found., a Gantt chart showing tasks versus the proposed project calendar. The second type of schedule, Error! Reference source not found., is a Gantt chart that indicates when each project deliverable will be delivered. These Gantt charts will cover the entire project, from beginning to end. For Figure 3-1, all projected tasks so far have been met on time and the team is continuing on schedule. One variance between the original schedule and the new projected schedule is the design process. Previously this was scheduled to start in early April end in late April, however, the design report is done in the beginning of April, thus the change in schedule. All other dates at this time require no modification to the original projections For Figure 3-2, all deliverables up to this date have followed the original schedule and there are no foreseeable reasons for changing the future projections. Thus, the original schedule is the current schedule Senior Design Dec04-08 21 Project Plan – PDA Based Marine Instrumentation Figure 3- 1: Gantt chart - Tasks vs Proposed Project Calendar Senior Design Dec04-08 22 Project Plan – PDA Based Marine Instrumentation Figure 3- 2: Gantt chart - Project Deliverable Schedule Senior Design Dec04-08 23 Project Plan – PDA Based Marine Instrumentation Figure 3- 3: Gantt chart - Project Deliverable Schedule Senior Design Dec04-08 24 Project Plan – PDA Based Marine Instrumentation 4. Closure Materials The following section contains information for closure on the project plan including client, faculty advisor and student team information. It also contains a closing summary of the project plan. 4.1. Project Team Information Project team member information is outlined below in tables. The information within these tables includes addresses and numbers of people involved with the project. 4.1.1. Client Information Client – David Sneitzer drsneitzer@rockwellcollins.com 4.1.2. Faculty Advisor Information Figure 4-2 lists information pertaining to faculty member of Iowa State University that will be assisting us in our design. Table 4-1: Faculty Advisor Information Advisor Name Office/Mailing Address Office Number E-Mail Address Dr.Gerald Sheble (515)294-3046 gsheble@iastate.edu 1115 Coover Ames, IA 50011 Senior Design Dec04-08 25 Project Plan – PDA Based Marine Instrumentation 4.1.3. Student Team Information Table 4-2: Team Member Information Member Name Major(s) Mailing Address Phone Number E-Mail Address Ritesh Desai Computer Engineering Computer Engineering Computer Engineering Computer Engineering 211 S Kellogg Apt #4 Ames, IA 50010 1300 Coconino #133 Ames, IA 50014 7436 Frederiksen Ames, IA 50010 1306 Iowa Circle Ames, IA 50014 (913)-219-2679 ritesh04@iastate.edu (515)-231-7281 myersm@iastate.edu (515)572-8111 huber@iastate.edu (515)292-8175 sgenter@iastate.edu Michael Myers Jacob Huber Sean Genter 4.2. Closing Summary Current management of marine instruments while sailing involves multiple instruments with no central display. The end deliverable of this project is to provide a unit that measures speed, direction, and other useful information to correctly and efficiently sail a boat. Off-the-shelf instrumentation will be used to collect data. An interface unit will have to be developed to allow communication between all the instrumentation and a computer. The system is designed specifically for sailboats. The project will provide a user interface that displays readings from several instruments to increase sailing efficiency. Senior Design Dec04-08 26