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timer Asked: Apr 25th, 2020

Question Description

Please redo your GPS report diagrams using sysml modeling tool or genesys tool to delope the required system view from the report and provide a conclusion at the end .

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ESI 6551 – Systems Architecting Final Project Group 4 GPS - FINAL PROJECT Final Report (3rd Submission) 04/24/2020 Team Members: Waleed Aldajani Adam Bizanti Abdullah Althuwi Fidelis Nwabunie Nasser Alenezy ESI 6551 – Systems Architecting Final Project Group 4 Table of Contents 1. Introduction & Background 2. Sm-Ov: Summary & Overview 3. Sm-Ova and Sm-Ovb: Operational Context & Description 3.1 Sm-Ova: Operational Context 3.2 Sm-Ovb: Operational Context Description 4. Operational Context Use Cases 5. Op-St: Operational States 6. Op-IS: Operational Interaction Scenario 7. Rs-Pr: Functionality Description 8. Rs-Is: Resource Event Trace Description 9. Rs-St: Resource Interaction Specification Pick 2 10. Rs-Tx: Resource Taxonomy 11. Conclusion List of Figures Figure 1. System Description 1 (e.g., Assembly Line, etc.) .......................................................... Figure 2. System Description 2 (e.g., Mass Production Line, etc.) ............................................... Figure 3. Sm-Ova - Title ............................................................................................................... Figure 4. Use Case Diagram Title ................................................................................................ Figure 5. Op-St – State Transition Diagram.................................................................................. Figure 6. Op-IS – Operational Interaction Scenario Diagram ........................................................ Figure 7. Rs-Pr – Functionality Diagram....................................................................................... Pick 2 Figure 8. Rs-Is – Resource Event Trace Diagram ........................................................................ Figure 9 Rs-St – Resource Interaction Specification .................................................................. Figure 10 Rs-Tx – Resource Taxonomy ...................................................................................... List of Tables Table 1. Acronyms .................................................................................................................. A-1 Table 2. xxxx Table 3l yyyy ESI 6551 – Systems Architecting Final Project 1. Group 4 Introduction & Background Design Goals and Considerations: The research paper gives a clear incentive on how to come up with a GPS responsible for tracking the location of either an object or an individual. This paper would comprehensively describe how these components work together and are therefore useful to an individual interested in launching a tracking system. GPS is a type of system that is used for positioning using satellites. Radio signals are generally used to convey coded information. The satellites transmit information, which is then interpreted by the receiver to recognize the exact and precise location. The satellites, which are located around 20,000 km from the surface of the earth ply around the orbit and are not affected by weather conditions. Then before, the GPS was reserved for military use only but in the 1980s, it was opened for civilians to use. GPS is very useful even for navigation purposes for ships and planes. The civilian users as well as the military use it for many reasons the main one being positioning. Three segments make up the GPS architecture. The three are GPS user segment, GPS control segment, and GPS space segments (Kostopoulou et al., 2017). To enhance the performance of these segments and components, GPS is based on a complex architectural design. This paper will, therefore, discuss the architectural design of the various components of a GPS design and how they work to enable efficiency. It is simply a description of what to expect out of the GPS tracker to be designed. ESI 6551 – Systems Architecting Final Project 2. Group 4 SmOv: Summary & Overview GPS is an important system and without it, our lives would be different. It has impacted almost all fields of our lives has made life easier and with it, one can travel to any corner of this world. However, from the discussions below, it clear that GPS is a complex system in terms of its infrastructure. It employs several components that must work together to bring out desired results. such components include satellites, GPS receivers among many others. Fig.1-GPS architecture The three GPS components work in collaboration with each other to enhance the positioning system’s accuracy. The positioning here is rooted in a principle referred to as the trilateration principle and it employs the use of coordinates to measure the actual positioning. To find the position, the system applies the use of two factors which include. ✓ Pseudorange calculation ✓ Use of trilateration principle to position the receiver To track the actual movement using longitude and latitude, three satellites work together to identify the 2D position. One of the satellites keeps track of a specific location on the surface of the earth. It then spreads that information into a large area and information from the second satellite is added to the first's one thus 4 ESI 6551 – Systems Architecting Final Project Group 4 allowing GPS to narrow down the location of interest. Now the addition of third satellite data gives a more precise location. Equation 1 below is used to measure the distance. Speed of light*travel time=distance At this point, data from the fourth satellite is crucial in re-confirming the real position of the user. It is here that the 3-D position is determined using the altitude, longitude and latitude. The pseudo-range calculation on the other hand is since GPS satellites transmit two types of frequencies referred to as L2 and L1. The L1 includes coarse and acquisition (C/A code) while L2 (P) is the precise code. The C/A code is generated from the signal generator, which is made up of a 10-bit shift. The digital output generated afterward too as PRN sequence or the Pseudo-random number. To obtain a spread spectrum signal, the user must be familiar with the PRN based sequence. The two signals between the receiver and GPS are matched through a correlator. Pseudo range also referred to as time frames are used by the receiver to compute each satellite’s distance. The time taken to ferry signal from the satellite is recorded on the satellite atomic clocks. The receivers clock records time taken to for signal reception. Figure 2 below illustrates the pseudo-range calculation. Fig.2 pseudorange calculation This paper will provide details using diagrams on how to design a tracking device, such as that one used in a vehicle tracking device. A tracking system involves a GPS tracking API; a GPS signal receiver, an interface, a server, wireless connectivity, a tracking device and a GPS satellite. A car's tracker for instance consists of network connection, server, software, removable or built-in battery, car/GPS adapter, module sealed box and mobile module. 5 ESI 6551 – Systems Architecting Final Project Group 4 Design of the GPS tracker The GPS tracker shown in the diagram below is made up of GSM/GPS. the components that have been used here include a 2GB micro SD card, a 2G network SIM card, Ethernet shield, cellular quadband antenna3dBi Ufl/slim sticker-type GSM, passive GPS Antenna uFL-15mm*15mm, lithium-ion polymer battery, arduino’s shield mini cellular GPS+GSM and a power supply Arduino MEGA2560 (Alshamsi et al., 2016). Diagram 1- GPS tracker design 6 ESI 6551 – Systems Architecting Final Project 3. Group 4 Sm-Ova and Sm-Ovb: Operational Context & Description 3.1. Sm-Ova: Operational Context Fig.3 GPS High-level operational concept graphic 3.2. Sm-Ovb: Operational Context Description Figure 3 above demonstrates the GPS based high-level operational concept of a company that supplies cargo, food delivery and taxi services as well. I t is an illustration of an architecture design that is service-oriented. Generally, the GPS enhanced geo-location is used in this case to track cars and cargo pickups. Every GPS equipped vehicle frequently sends the lat-long back to the server. When it comes to the demand service, tracking using the GPS is carried out to determine the user’s current and accurate location. Since the earth is spherical, the tiny cells indicated in the fig. 3 are used to divide the earth with each cell having a very different cell ID from the rest (Mukhtar, 2015). The position of the client or user is determined using these cell IDs once a demand has been done. 7 ESI 6551 – Systems Architecting Final Project 4. Group 4 Operational Use Cases Fig.4 GPS Operational Context Use Cases Figure 4 above is a demonstration of how such a company dealing with distribution of commodities and people uses GPS to run the system and ensure activities are executed appropriately. As already mentioned, the vehicles are already equipped with the global positioning system receiver. What happens is that the GPS receiver generates satellite coordinates, which are then transmitted into the GSM tower via the GSM modem. The coordinate is also transmitted to an internet-connected computer where the database stores it to enable Google map display location. The client or user on the other hand can be able to see the vehicle's location using a Smartphone. From the phone, the customer sends an SMS which is received by the GSM modem already installed in the vehicle. Afterward, the user receives the SMS from the modem indicating the vehicle's location coordinates via a Google map enhanced link (Kamel, 2015). 8 ESI 6551 – Systems Architecting Final Project 5. Group 4 Op-St: Operational States GPS State Transition Description Figure 5 below shows the GPS's state transition Fig. 5- GPS State Transition The figure above depicting the GPS state translation is based on two particular phases. The first one involves sensor nodes deployment. The carrier who is n this case a vehicle has a mote which is GPS enhanced thus enabling it to beacon the location. Therefore sensor nodes only infer location based on the information that is already in a particular location. The second phase here involves the initialization of the system. If a sensor node has not located the location yet, the neighboring sensor nodes will provide the information about the location. The purpose of the second phase is to foster a scheme's robustness. GPS mote that does not have a reference point is said to be uninitialized state, while that one that has a reference point is classified as initialized. 9 ESI 6551 – Systems Architecting Final Project 6. Group 4 Op-IS: Operational Interaction Scenario GPS Event Trace description Fig. 6-GPS event trace description The protocols in the figure above are controlled by the advanced geo-fencing that is based on the number of mobile phones available within a specific geofencing area. The geo-fencing incorporates the use of periodic triggers to enable the mobile phone to receive updates about the event triggers and periodic location (Dukare et al., 2015). But operations here depend on whether the mobile device is within or out of the geo-fencing area. It is in the Wi-Fi access point that the geo-fence corresponds as it links to the Wi-Fi identifier. The shapes that define a geo-fence include polygons, eclipses and circles. It is here that the mobile device configures several servers and launches the process of positioning. If an event happens during the process, a report is sent back to the server. 10 ESI 6551 – Systems Architecting Final Project 7. Group 4 Rs-Pr: Functionality Description Diagram 1 describes the components needed to develop an Arduino based GPS and the figure 7 below illustrates how it will be connected to come up with a complete tracking system. The serial library software will enhance the serial connections on pin 11 and 10. Pin 1 and 0 of the Arduino will also establish serial communication however; other pins will also facilitate the same. The GPS module will be powered with a power supply of 12 volt. Fig 7-GPS functionality description There is a direct connection between the Arduino’s Tx and Rx and GSM module’s Rx and Tx pins. Similarly, the GSM is powered using a power supply of 12 volt. Arduino’s pin 2, 3, 4, and 5 to optional LCD pin D7, D6, D5 and D4. Adruino’s pin 2 and 3 are then connected directly to the LCD’s pin EN and RS. In order to adjust the LCD’S brightness or contrast, a potentiometer is used. 11 ESI 6551 – Systems Architecting Final Project 8. Group 4 Rs-Is: Resource Event Trace Description Ardruino is very useful in this case as it will be used to control the operations within GSM module and GSM receiver. The purpose of the receiver is to track vehicle’s coordinates while GSM module generates an SMS to the user about the coordinates. The LCD is purposefully used to display coordinates or messages and is optional. Fig. 8- Resource event trace description After programming, the ready hardware is then instilled into the vehicle and activated by supplying it with power. Any message can be sent to the track vehicle to establish connection. The GSM receives the message, and then transmitted to arduino for main message extraction. The messages are matched in the arduino which then reads the coordinates. 12 ESI 6551 – Systems Architecting Final Project 9. Group 4 Rs-St: Resource Interaction Specification Fig. 9- Resource Interaction Specification The figure above shows the system flow to be adhered to to generate the desired results. To start with, it is worth to check the status of the GPS receiver. After that, it is worth checking whether the controller is powered to enable the reading of data. The next process involves extracting essential data and finally, before ending the process, the information should be saved. 13 ESI 6551 – Systems Architecting Final Project Group 4 10. Rs-Tx: Resource Taxonomy Fig. 10-Resource Taxonomy Specification The purpose of the GPS receiver as noted is to compute the satellite’s signal traveling time. The antenna design includes either the active, passive or built-in design antenna. The active antenna uses a lengthy cable to establish a connection with the receiver. The passive one uses a coaxial cable that is short to launch a connection. The built-in antenna is integrated into the receiver itself. 14 ESI 6551 – Systems Architecting Final Project Group 4 11. Conclusion In conclusion, 15 ESI 6551 – Systems Architecting Final Project Group 7 Appendix A: Acronyms Acronyms used in this report are provided in Table 1. Table 1. Acronyms Acronym Final Report Literal Translation Sm-Ov Summary and Overview Sm-Ova Summary and Overview Part A Sm-Ovb Summary and Overview Part B Op-St Operational States Op-Is Operational Interaction Scenarios Rs-Pr Resources Processes Rs-Is Resource Interaction Scenarios Rs-St Resource States Rs-Tx Resource Taxonomy A-1 Insert Title Here ESI 6551 – Systems Architecting Final Project Group 7 Appendix B: Additional Information/ references Alshamsi, H., Këpuska, V., & Alshamsi, H. (2016). Real-time vehicle tracking using Arduino mega. International Journal of Science and Technology, 5(12), 624. Dukare, S. S., Patil, D. A., & Rane, K. P. (2015). Vehicle tracking, monitoring and alerting system: a review. International Journal of Computer Applications, 119(10). Kamel, M. B. M. (2015). Real-time GPS/GPRS based vehicle tracking system. International Journal Of Engineering And Computer Science, 4(08). Kostopoulou, O., Porat, T., Corrigan, D., Mahmoud, S., & Delaney, B. C. (2017). Diagnostic accuracy of GPs when using an early-intervention decision support system: a high-fidelity simulation. Br J Gen Pract, 67(656), e201-e208. Mukhtar, M. (2015). GPS based Advanced Vehicle Tracking and Vehicle Control System. International Journal of Intelligent Systems and Applications, 7(3), 1. Final Report A-1 Insert Title Here ESI 6551 – Systems Architecting Final Project Group 7 Appendix C: Additional Information Final Report A-1 Insert Title Here ...
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