smart air vents that enable equal temperature through air flow control rahul dendukuri, team leader...
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Smart Air Vents that Enable Equal Temperature through Air
Flow Control
Rahul Dendukuri, Team LeaderRahol Rajan, Web Master
Siddhanth GanesanJohn McShaneDanny Tibbetts
Georgia Institute of Technology School of Electrical and Computer Engineering
October 29, 2013
Project IntroductionMechanical Design Software Design Market Integration & Current Progress
Project Overview
• The centralized air conditioning system does not always cool or heat different regions of a building uniformly
• Network of Smart Air Vents that facilitates uniform cooling of a building through air flow control
• Owners of buildings with centralized air conditioning
• Cost of prototype: $143.31
Design Objectives
• Design a network of air vents that controls air flow to equalize temperatures in different rooms
• Unit will be comprised of a remote temperature sensing module and the air vent
• Independent of the centralized air conditioner• Easy installation• Automated after installation
Technical Details
• Temperature sensing module is comprised of:– Temperature sensor (TMP36)– Wireless transceiver (XBee Series 1)
• Air vent is comprised of:– Motor and gears– MCU (Mbed)– Wireless transceiver (XBee Pro)
Project IntroductionMechanical Design Software Design Market Integration & Current Progress
Prefabricated Air Vent
Renders of Vent – Side View
MCU Housing
Motor & Gears
Closed Vent Open Vent
Renders of Vent – Front View
MCU Housing
Project IntroductionMechanical Design Software Design Market Integration & Current Progress
Illustration of Design
Communication within the Unit
Alternative Network Topology
• XBee transmits to preconfigured addresses– Not possible to change destination addresses
during execution
Temperature Processing
Motor Control
• Depending on values of X1, X2 or X3 the positions are 0,1,2, or 3
TOP VIEW
Flap Open
Flap Closed
Project IntroductionMechanical Design Software Design Market Integration & Current Progress
Market AnalysisCompetitors:
– Keen Home’s Keen Vent• $40 per vent, $150 one time fee• Requires user survey of schedule
– Pautech’s Click Vent• $30 per vent• IR remote input
– Activent• $50 per vent• Requires target temperature to be set
Smart Air Vents:– $150 per vent– No user input– System response is to temperature comparison between rooms
Prototype Cost
Prototype Total: $143.31
Item Unit Cost Quantity Total
Pololu Mini Plastic Gear Motor $5.49 1 $5.49
NCV70501 Driver Motor $3.56 1 $3.56
Mbed Microcontroller $49.99 1 $49.99
XBee Wireless Transcievers $22.95/$42.95 2 $65.90
6” X 10” Wall Register $8.37 1 $8.37
Miscellaneous (Gears and Wires) $10.00 - $10.00
Milestones Accomplished
• Ordered XBee Pros, motor, motor driver, and the gears
• Built a Styrofoam model for the air vent• Successful communication between the MCU
and the temperature sensing module • Experimented with converting a pre
fabricated vent to meet our design requirements
Task SummaryTask Owner Deadline
1 Ordering Motor and Motor Driver Siddhanth G 10/30/2013
2 Testing of Analog Temperature Sensor Rahul D 11/7/2013
3 Communication of Analog Temperature Values Rahol R 11/10/2013
4 Node Failure Algorithm Rahul D 11/15/2013
5 Temperature Processing and Motor Control Implementation
Siddhanth G 11/15/2013
6 Attach Gears and motor to vent Danny T 11/15/2013
7 Perform Power Calculations - Motor Block John M. 11/20/2013
8 Perform Power Calculations - Sensor Block Danny T. 11/20/2013
9 Determine optimal power Supply John M. 11/22/2013
10 Determine Optimum Constant “K” for Process Rahol R 11/25/2013
Questions?