Difference between revisions of "S14: Modular Security System"

Revision as of 05:25, 22 May 2014

Grading Criteria

MODULAR SECURITY SYSTEM

Abstract

Most people lack security systems in their homes or they have outdated security systems. The main thing preventing them is the high cost of alarm systems and the cost of professional installation. The Modular Security System can monitor the homes and alert user via an email message anytime there is any in intrusion. The security system will also provide the users capability to control the system via an Android App.

Objectives & Introduction

The aim of this project is to deliver a low-powered security system that can be controlled wirelessly through common consumer electronic devices, such as desktop and laptop computers, tablets, or phones. Intrusion detection will be performed by various sensors that will communicate wirelessly to a base station. The base station will then push detection events to the user’s devices.

Most security systems on the market forward alerts to alarm companies that then inform users of alert events as a service provided for their continued security subscription. This project aims to change the industry standard by providing a security system that provides direct alerts to users. In pushing this project into fruition, the topics of embedded systems and microcontrollers, mesh networks, wireless fidelity and TCP/IP, and mobile applications will be explored. This development team hopes to gain skills from working on this project and to pass on the knowledge gained from this experience through this report.

Team Members & Responsibilities

• Team Member 1: Surinder Pal Singh
  • Sensor Node Implementation
  • Interface MP3 Decoder with Base Station
  • Design Android App
  • Testing
  • Report and Documentation
• Team Member 2: Tianxiong Zhao
  • FreeRTOS Implementation of MP3
  • Testing
• Team Member 3: Nathaniel Natividad
  • Base Station Implementation
  • Email Alert to User
  • Testing
  • Report and Documentation

Schedule

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Parts List & Cost

Design & Implementation

Hardware Design

The security system is composed of several different components like sensor nodes, base station, web server,mp3 decoder and an android application. The sensor nodes contain a PIR motion detector and magnetic contact sensor. Anytime the node detects any motion activity or instruction via contact sensor, it sends a message to base station via Nordic Wireless. The base station analyzes the message and it alerts the user by sending an email message to the web server. The base station establishes connection to the web server via Wi-Fi, which is interfaced to the base station via UART. The web server then alerts the user about the intrusion via email within couple of seconds. The base station also updates the status on the LCD. Anytime the System is armed, disarmed or the alarm is triggered, the MP3 decoder plays the sound.

System Design

Base Station Schematic

Sensor Node Schematic

Hardware Interface

In this section, you can describe how your hardware communicates, such as which BUSes used. You can discuss your driver implementation here, such that the Software Design section is isolated to talk about high level workings rather than inner working of your project.

The modular security system consists of many different hardware components. For the base station, the SJSU One Micron-controller is interfaced to a LCD, MP3 Decoder, a Wi-Fi module. The LCD is interfaced via Serial Peripheral Interface Bus. The port connections are shown in Table 1. The RN-XV WI-Fly module is interfaced to the micro-controller via UART2. The MP3 decoder is interfaced to the GPIO pins P0.0 and P0.1. The sensor nodes have a magnetic contact sensor and a PIR motion sensor interfaced to P0.0 and P0.1 respectively. Table 2 shows the interface connections between the micro-controller and the MP3 decoder.

Table 1

Table 2

Software Design

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Base Station

Software Architecture Design Base Station

Sensor Node

Flow Diagram Sensor Node

Android App

TCP Connection

Implementation

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Testing & Technical Challenges

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Testing Sensor Nodes

My Issue #1

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Conclusion

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Project Video

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Project Source Code

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References

Acknowledgement

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References Used

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Appendix

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