Difference between revisions of "S15: Automated Meeting Room Reservation"
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Revision as of 20:53, 24 May 2015
Contents
Grading Criteria
- How well is Software & Hardware Design described?
- How well can this report be used to reproduce this project?
- Code Quality
- Overall Report Quality:
- Software Block Diagrams
- Hardware Block Diagrams
- Schematic Quality
- Quality of technical challenges and solutions adopted.
Project Title
Automated Meeting Room Reservation
Abstract
To implement a wireless automated meeting room reservation system using Nordic Wireless modules and SJONE boards. Each SJOne board will communicate with a central Board to convey the status of meeting room in use through.
Objectives & Introduction
The automated meeting room reservation is achieved through the built-in Nordic Wireless interface. Each board acts as a node in the mesh network which sends and receives information and communicates with a central node. The following objectives are to be implemented:
- Auto detection of room use
- Shortest Path routes
- Address nodes with auto-replies
- Track the rooms in use at the central server.
Team Members & Responsibilities
1. Sumeet Bhagwat
- Nordic Wireless Communication among nodes
- Integration of PIR sensors with Nordic
- Assembly setup in test environment
- Update Project Wiki
2. Ajinkya Khasnis
- Nordic Wireless Communication among nodes
- Develop Master Node Display App
- Assembly setup in test environment
- Update Project Wiki
3. Atresh Gummadavelly
- PIR sensor Interface and code to detect motion
- Integration of PIR sensors with Nordic
- Assembly setup in test environment
- Update Project Wiki
4. Sujay Kulkarni
- PIR sensor Interface and code to detect motion
- Hardware Assembly with USB Power Supply
- Assembly setup in test environment
- Update Project Wiki
Schedule
Show a simple table or figures that show your scheduled as planned before you started working on the project. Then in another table column, write down the actual schedule so that readers can see the planned vs. actual goals. The point of the schedule is for readers to assess how to pace themselves if they are doing a similar project.
| Week# | Start | End | Task | Actual |
|---|---|---|---|---|
| 1 | Apr 7, 2015 | Apr 21, 2015 | Identify hardware requirement, Order parts, Researching about datasheets | Complete |
| 2 | Apr 21, 2015 | May 10 , 2015 | Configuring Nordic communication peripheral and testing with wireless.h API to send and receive a message. | Complete |
| 3 | Apr 21, 2015 | Apr 28, 2015 | Test the motion sensors - Interfacing the PIR sensors to Sjone board, test them Developing an Algorithm | Complete |
| 4 | May 12, 2015 | May 18, 2015 | Integrating Nordic and motion sensors and testing the entire setup. | Complete |
| 5 | May 12, 2015 | Apr 18, 2015 | Working on Display App for Master Node. | Complete |
| 6 | May 18, 2015 | May 20, 2015 | Hardware Setup in test environment. | Complete |
| 6 | May 5, 2015 | May 12,2015 | Writing the project report and updating the wiki page accordingly. | |
| 7 | May 22, 2015 | May 22, 2015 | Project Demo. |
Parts List & Cost
| Item | Price | Quantity | Price |
|---|---|---|---|
| SJ One Board | $80 | 4 | $320 |
| PIR sensors | $2.40 | 14 | $33.5 |
| USB Battery Packs | $10 | 3 | $30 |
Design & Implementation
System Overview
The system diagram evidently shows that the project setup will be implemented with the help three separate rooms. One room will serve as a central monitoring or the server room while the other two rooms will be for meeting or conference sessions. Every meeting room will be equipped with an interface of a SJ-ONE microcontroller and a PIR sensor.
The interface is powered with the help of a 5V portable Dynex power unit which will be connected to the SJ-ONE board with the help of a simple USB to min-USB cable. The monitoring room will consist of a laptop-SJ One microcontroller interfaced setup which will help us obtain and analyze the motion detection values and deduce any movement that occurs in the room from it.
The PIR motion sensors will detect movement in the meeting rooms and accordingly communicate with the central SJ-One board through the on-board Nordic Wireless modules on each SJ-One board. Once the data is received, it will be updated on the GUI(WPF on Laptop) that has records of all the meeting rooms that are currently or had been occupied. The user can monitor this data and keep track of all the rooms being occupied , hence , eliminating need of manually verifying the occupancy of every meeting room of a certain building or structure.
The design and implementation of the project has been divided into sections pertaining to hardware and software design as given below:
Hardware Design
PIR Motion Sensor
PIR Motion Sensor plays the primary role of detecting motion in the vicinity, in this case,a room. It relies on heat changes in the environment by using temperature variations as an indicator. The sensor has 3 pins: Vcc, GND and a GPIO which can be used while interfacing with a micro-controller. Detection takes place in conical area(~120 degrees) in front of the sensor and the range is approximately 30 feet. This device is power compatible with 3.3V/500uA and 5V/800uA as well and will be interfaced with each of the SJ-One boards that are being used in this project.
Nordic Wireless Module
The Nordic module is an on-board wireless module which is configured to initiate wireless data transfers. Here, the modules are implemented with the purpose of establishing wireless communication with other SJ-One boards which will help send and receive the PIR sensor data resulting from motion detection. Nordic wireless module uses RF transmission with 2.4GHz ISM band. Along with RF transmission, it has a significant feature of operating at ultra-low power range of 1.9-3.6 V supply voltage (with 5 V tolerant pins) and 11.3mA Tx with 1mW output power.
Portable Dynex 5 V battery
Every SJ-One board in the meeting rooms is powered by using 5 V portable Dynex battery. It can be interfaced with the board using the USB 3.0 to mini USB converter cable. This device is power compatible with the SJ-One board since with input specs of 5V/1000mA and output specs of 5V/1000mA. Charging power of this device can range upto 2200mAh.
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.
Software Design
Show your software design. For example, if you are designing an MP3 Player, show the tasks that you are using, and what they are doing at a high level. Do not show the details of the code. For example, do not show exact code, but you may show psuedocode and fragments of code. Keep in mind that you are showing DESIGN of your software, not the inner workings of it.
Implementation
This section includes implementation, but again, not the details, just the high level. For example, you can list the steps it takes to communicate over a sensor, or the steps needed to write a page of memory onto SPI Flash. You can include sub-sections for each of your component implementation.
Testing & Technical Challenges
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My Issue #1
Discuss the issue and resolution.
Conclusion
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Project Video
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Project Source Code
References
Acknowledgement
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References Used
List any references used in project.
Appendix
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