SDMay06-08 Design Review Home Smart Ventilation System
Dec 26, 2015
SDMay06-08 Design Review
SDMay06-08 Design Review
Home Smart Ventilation System
SDMAY 06-08
Faculty Advisors
Dr. Zhao Zhang
Dr. Arun Somani
Client
National Instruments
Team members
Austin Kelling
Carson Junginger
Suwandi Chandra
Gerald Ahn
Outline
Project Overview Detailed Description Example of Use Problem Statement Operating Environment Intended users & uses Assumptions &
Limitations
Expected End-product Detailed Design
Network Setup Device Control Server Interface Design
Design Approach Future Changes
Project Overview
A system using miniature sensing and controlling nodes, to increase ease of use for common electronic devices and provide custom server managed operation of those devices.
Miniature sensor and processing nodes = QBX modules developed by National Instruments
Bluetooth communications for everything
QBX
By National Instruments
• Dimensions : 4 x 4 x 4 cm• Weight : 82g (2.9 Oz)• Modules:
• Bluetooth• MMC• Processor• RS232• Power• Extension
Detailed Description
Bluetooth - Wireless personal area network for short-range radio links between mobile computers, phones, and other portable devices
LabVIEW - Laboratory Virtual Instrument Engineering Workbench, a graphical programming language that used to program the QBX module
QBX - LabVIEW programmable hardware used to sense, process, store, and communicates via Bluetooth and serial port
VI (Virtual Instruments) - Sub-unit program in LabVIEW that represents the appearance and function of a physical implementation
Example of Use
Super Mom Scenario
It is another crazy morning with three kids. Super mom has to prepare each kid with their breakfast, lunch box, after school program items, and so on. Super mom also needs to check all the lights, TV, stereo. Time is limited. How can she do everything before taking the kids to school??
Wouldn’t she be really SUPER if she has a Bluetooth device that can control all of the devices at once!!
How our project will improve life
Time saving Efficient heating and cooling control Improved home security Ease the use of all QBX controlled devices Easy to use for both Technical and Non-
Technical users System Security
Why you need our system
It’s efficient and reliable It’s secure Saves you time Saves you money Allows for mass customization of home or small
office Uses existing technology to make your life easier
Problem Statement
Simplify control in the home or small office
Control different kinds of electrical devices
Affordable and easy to use for the user
System Outlook
This is a representation of how the system will be set up in a three-story house.
There are QBX modules connected to motors that control the vents on each level of the house.
When the temperature of one of the floors raises above or drops below the desired temperature, the QBX modules open the vents and turn on the appropriate temperature control device.
Operating Environment
Host Computer: Operating System: Windows XP and LabVIEW
Embedded. IOGear GBU311 Bluetooth adapter with range of 30ft. Remote desktop enabled
QBX module: Indoors with temperature between 32°F - 120°F. Rechargeable 3.6 V battery, and 110 V AC power.
Intended Users and Uses
Intended Users Able to use a basic windows operating system based
computer. Able to remote desktop into the host computer
Intended Uses Equalized temperature on all floors of a building Heating and Cooling of separate floors with an
advanced algorithm Remote control of temperature
Assumptions – 1/2
User Assumption:
User knows English in order to understand the user interface and manuals of the system.
User has a basic knowledge on how to operate personal computer.
User owns a computer with Windows XP operating system and Bluetooth adapter.
The host computer terminal can access by authorize users only.
User has a secure network which the server is connected to.
Assumptions – 2/2
System Assumption:
The system (including the server) is expected to run 24 hours.
The system will have a user-friendly graphical interface for the server.
QBX module should plug-in to AC power for power recharge and longer use
Modeling of ventilation control
Limitations
Need for a server computer running 24/7
Interference with Bluetooth communications
QBX module power dependencies
Data transfer rate fades at longer distances
System is customized for our prototype only
Benefits of our project
Cost efficient heating and cooling control of a multi-level building
Equal temperatures on all floors of a building Easy to use for both Technical and Non-
Technical users Remote control of temperature
Expected End-Product – 1/2
To have a GUI based LabVIEW program running on a host computer that can control one or more QBX module via Bluetooth.
To have uniquely customized QBX modules that control the airflow of the cooling and heating devices use.
Our system will be accessible through remote desktop access from anywhere that has an internet connection.
Expected End-Product and Deliverables – 2/2
A demonstration of the system consisting three QBX modules place inside each of three stack of plexiglass boxes that has heating and cooling element in two of the boxes, and a host computer.
A reference manual containing how to set up each QBX module, breadboard for power control, mobile devices and how to operate the host computer and use the GUI.
A collection of the VIs and sub-VIs for operating our system
Design Activity
A step-by-step list of what will occur when the system is activated. On the host computer:
The user will set the desired temperature control device (A/C or Heat). The user will then set the desired temperature that the house should stay at.
On the QBX modules: If the temperature of the floor that the QBX module is monitoring differs from
the temperature set by the user, the QBX will open the vent, and if the temperature control device is not already on, the QBX will turn it on.
The QBX modules will all work independently to ensure that each of the floors of the house are at the same temperature.
This system will eliminate large temperature differences between the floors of multi-story houses.
Technology Considerations
SHT11 Temperature Sensor This sensor comes fully calibrated
and offers long term stability at a low cost.
Bluetooth This technology is used because the QBX modules
are equipped with Bluetooth communication modules.
Technology Considerations
Labview Embedded This software was given to us by National
Instruments in order to communicate with the QBX modules.
Stepper Motors The most practical motor to use for vent control.
QBX Voltage Module This will be used to control the stepper motors and
turn the temperature control devices on or off.
Technology Considerations
Relays The system will use relays connected to the QBX
voltage module in order to turn the different devices on or off.
Working Model The team will construct a model to demonstrate
how the system would work in an actual home using these technologies.
Working Model
The model will be constructed of three shoebox sized compartments that will represent the floors of a house.
The front and rear of the model will be made from a clear material in order to see inside.
This model will demonstrate how the system works just as it would in an actual three-story house.
Implementation Activities
Interface – Host computer
VIs Host Computer QBX modules
Hardware Setup – Relay & Stepper Motor
Host Computer Interface
Host Computer VI
QBX Module VI
Personal Effort Requirement
Other Resources Requirement
Item Team Hours Other Hours Cost
Project Poster 14 2 $70.00
SHT11 Sensor 0 0 $43.84
Bluetooth Adapter 0 0 $52.00
Breadboard 0 0 Donated
QBX 0 0 Donated
Total 14 2 $165.84
Financial Requirement
Item W/O Labor With Labor
Parts/Materials
Project Poster $70.00 $70.00
SHT11 Sensor $43.84 $43.84
Bluetooth Adapter $52.00 $52.00
Subtotal $165.84 $165.84
Labor ($11.00/hour)
Carson Junginger $1,320.00
Austin Kelling $1,375.00
Gerald Ahn $1,419.00
Suwandi Chandra $1,287.00
Subtotal $5401.00
Total $165.84 $5,566.84
Schedule
Project Evaluation
Project Definition Fully Met
Technology Consideration Fully Met
End-Product Design Partially Met
End-Product Implementation Partially Met
End-Product Testing Partially Met
End-Product Documentation Not Attempted
End-Product Demonstration Not Attempted
Project Deliverables Partially Met
Commercialization
There are no commercialization consideration for our project.
Proof of our concept of the system in instead environmentally friendly.
Future Recommendation
Extension of the control devices to other electronic devices such as: TV, Radio, and Lights, etc.
Extend the controlling by using Bluetooth devices to control all the electronic devices.
More specific profile setting for specific user for all the devices.
Risk Management
Anticipated potential risks Loss of team member Loss of code
Unanticipated risks encountered Loss of documentation Constraints on usage of resources
Resultant changes due to risks encountered Changes in project goals Slow development
Lesson Learned
What went well? Good advisory meetings Good team communication
What did not go well? Defining the project Slow early development Bluetooth Connectivity
Lesson Learned Cont’d
Technical knowledge gained LabVIEW programming Experience with SHT11 sensor & Stepper motor Bluetooth Technology
Non-technical knowledge gained Project management skills Learned the importance of organizing project resources Learned the importance of meeting deadlines
Closing Summary
The goals of this project is to: Provide a user a cost efficient heating and cooling
control of a multi-level building that is easy to use for technical and non-technical users
Introduce a smart module with wireless capability to control air flows in home ventilation system
Thank You!!