Software: the firmware on the microcontroller|Digital systems design Engineering
Interface: between the microcontroller and peripheral devices, wired or wireless communications modules, sensors, actuators, microphones, speakers, etc.
Milestone 3
Introduction, Motivation
· What is the project? It is Security Alarm System .
· What does it do? This system is going to help peoples by saving their lives, kids, or other high values items from any home thefts.
· What makes it interesting?The project interesting because the design is simple that we can hide it in roof, and it will be easy to installing. Also, it will be available in a reasonable price.
· The design/implementation process? Or the application? Or both?
· What are the benefits of your work? How will it help someone? How will it change the society? It’s a fact that a home security system can help your home and family be safe. Also, the yard sign will help keep your place safe from theft and your neighbors will get the benefits when the area around your home is secured. A security system can help protect children and old people who has dementia.
Related Work
Related work: should present similar products available in the market, not your vision of how ppl may design it.
A review of the market and what’s available should be included here.
· Who else has tried to solve the same or similar problems? What are their limitations? for this project there are no limitations. some people can make it works with cam, smartphone, sound, light, and a lot of idea to make the environment safe.
· In relation to related work, what is your contribution? Are you making a new system for the first time? Or are you improving an existing idea or design? this idea already existent but our plan to find safe life for everyone even for people with low income.
· Suppose you are building this product for a company. Who are your competitors? How do you expect to be competitive? There are companies that have created a Security Alarm System but most of those system are an expensive. we would be quite competitive due to our pricing, estimated shipping time, user interface, and effectiveness.
Specification
Specifications: should include include
· What is the system supposed to do? This item should be presented using technical terms, not overall description
· Who would be your target user? Who would buy it? Where would you sell it? What target price? Again technical terms, we are writing the specifications of the product not an advertisement.
· What are the parameters that matter? e.g., physical size, weight, power budget, total component cost, responsiveness, bytes per second, …? (Constraints): any numbers presented here needs to be justified, how did you calculate your total cost? size? or weight?
· Does it have to interface with another device or system? Was not included in the section
· What is the system supposed to work? The system can be activated using password through keypad scanner to detect from the windows and/or the doors if someone breaking the house. And it will detect from the input which are the switch that will be attached in the windows and the doors.
· Who would be your target user? Who would buy it? Where would you sell it? What target price? Our potential buyers are the people how have low income and how cannot buy the an expensive security alarm system.The price goal is between $80 – $200.
· What are the parameters that matter? e.g., physical size, weight, power budget, total component cost, responsiveness, bytes per second, …?The ideal size of the system would be 15*15*3 cm, it will weigh roughly 165g-200g and the price goal is between $80 – $200.
· Which of the parameters are already given, and which ones do have some freedom of exploring?
· Does it have to interface with another device or system? We are going to use Tiva C Series TM4C123G only
· How will you power the system? by battery? by AC adapter? Powered by 5V through a rechargeable DC batteries.
Design
· What are possible ways to organize your system, and what are the trade-offs?
· For a given system organization, what are the possible choices of technologies and their trade-offs? e.g., software vs. hardware, digital vs. analog, uniprocessor vs. multiprocessor, more memory vs. less memory, …
· Include sections for each module in your design with flow charts, call graphs, schematics, etc..
· What other reasons motivated your design decisions?
· so that I can finish the project? so that it can be mass-produced at a reasonable cost?
· so that it can be tested thoroughly?
· so that it can meet the power budget?
· so that I can use one component instead of two?
· so that the two subsystems can be designed in parallel?
· for future expandability?
· so that we can use a smaller battery?
· so that it does not overheat?
· Any other considerations?
· Is there an enclosure? Are you
· designing your own or buying an existing box?
Development Plan
· Who is the team captain? We all work together as team in this project, to be our leader.
· Who is responsible for which tasks?
Task 1: we all as team chose the idea for project.
Task 2: Design
SubTask 2.1: programing ( C )
SubTask 2.2: Hardware ( circuit )
Subtask 2.3: calculation
Task 3: testing & Debug
· Each team member should include a section with his/her task planning and results.
Conclusions
· What have you learned? What worked well, what didn’t?
· What resources were helpful and what were not?
· How would you do things differently?
· What are opportunities for further developing on this work?
Credits and Acknowledgments
· Who contributed to which parts?
· Who helped you a lot on what issues?
Write Up
Related work
for this project there are no limitations. some people can make it works with cam, smartphone, sound, light, and a lot of idea to make the environment safe. this idea already existent but our plan to find safe life for everyone even for people with low income. There are companies that have created a Security Alarm System but most of those system are an expensive. we would be quite competitive due to our pricing, estimated shipping time, user interface, and effectiveness.
Specification
The system is composed of 3 main components:
1. Microcontroller: The purpose of this is to control and manage the workflow of the system. This includes, listening for inputs. Inputs in this case are from, keypad to enter security pin and configuration of the system and listening for signals from the sensors installed on windows and doors.
2. Digital sensors to be installed on windows and/or doors: The main functionalities of these sensors is to send signals to the main controller when detecting break-in activities which in return the controller will set the alarm off.
3. Keypad: The role of the keypad in the system is to give users the ability to enter the pin number to turn on and off the alarm. Keypad also facilitate the users with configuring the system. The system configuration function allows users to reset pin key, add more than one pin and disable/enable the alarm.
This system is designed efficiently for buyers that are seeking alternative inexpensive alarm system. The price of the system is calculated to be between $80-$200 which is much cheaper that what the market currently offer for such a system. With the specifications mentioned above, the system size is determined to be 15x15x3cm in dimension and will weigh roughly 165g. As they device will use modern and efficient microcontroller and digital sensors, its responsiveness is estimated to be in milliseconds. Effectiveness and durability of the device is yet to be examined and explored. There is a variety of options to choose from in the market in terms of microcontrollers and sensors. Further research is required to determine the ideal choice of components that will fulfill the responsiveness, effectiveness, durability and reliability of the system. Finally, for now, the system will adopt Tiva C series TM4C123G only and it will be powered by 5v using a rechargeable batteries
Design
Conclusion:
Alarm systems are essential tools that almost everyone should utilize and use. This is because the safety of children and precious belongings is a priority of most individuals. Designing a smart, reliable and efficient system is the most important aspect when developing a security system because it earns the public trust about the brand and the system. However, not having built and tested the system is a fall back as building and testing the system might introduced unaccounted for issues that may contribute to an increase to the price of the system. Having experiences integrating and testing different type of sensors that are mentioned in the design of this system is a bonus because it provides us with the extra assurances that the device will function correctly, meet our expectations and almost makes our assumptions a certainty. Furthermore, this piece of work opens many new opportunities to both the security industry and to the users. It benefits the security industry because it illustrates that developing a robust system does not need to be overly expensive. For the users, it encourages them to utilise such tools in their homes without the need of worrying about the overhead of maintenance and hidden cost for running the system.
