team members: curtis mayberry, ben cao, thinh luong, ben jusufovic advisors: lee harker, jason boyd
TRANSCRIPT
Senior Design: Steam Heat Controller
Team Members: Curtis Mayberry, Ben Cao, Thinh Luong, Ben Jusufovic
Advisors: Lee Harker, Jason Boyd
Problem Statement Constraints High-level Design Expected deliverables Possible Issues Budget Schedule
Overview
Currently, the old section of Coover utilizes steam valves in order to heat adjacent rooms. In extreme cases, one steam valve controls the temperature in five different rooms through five radiators. This leads to temperature offset in the rooms and continuous adjustment of the valve in order to accommodate the individuals within each room.
Problem Statement
Temperature Sensors controlled by wireless Mechanical implementation Temperature differentiation between rooms Financial budget: $1000 (not finalized) Plant restrictions (heat output)
Constraints
Mechanical system Wireless interface between temperature
sensor and controller PID Temperature Controller Network interface Room temperature profiling Temperature sensor located in control panel LCD user interface building profiling Interface with Johnston Control equipment?
High-level Design
Overall Design
User Interface
Controller Box
One controller per valve◦ Ability to communicate through ISU network
Functional control panel◦ LCD interface◦ Communicate with controller◦ One temperature sensor per room
Expected Deliverables
Conflicting Temperature Preferences ◦ 2 to 5 rooms with multiple control panels
Limited mechanical experience Part’s lead time Need an adaptable system
◦ Variety of environments
Possible Issues
Controller Box Budget
MODULE ITEM DESCRIPTION VENDOR COUNT PRICE/UNIT PRICEDC motor 12VDC/21RPM Gearhead Motor/Tach-Used MPJA 1 36.95$ 36.95$ Motor driver circuit LMD18200T Digikey 1 17.78$ 17.78$ Metal platform 1 15.00$ 15.00$ Tranceiver Digi Zigbee PRO XBee Digi 1 20.00$ 20.00$ AC to DC power supply 1 20.00$ 20.00$ Miscellaneous Components ECPE 1 5.00$ 5.00$ Micro-controller 1 30.00$ 30.00$ Malfunction alarm beeper 1 1.00$ 1.00$ Ethernet controller 1 10.00$ 10.00$ PCB 1 33.00$ 33.00$ Total 188.73$
Controller Box
Control Panel Budget
MODULE ITEM DESCRIPTION VENDOR COUNT PRICE/UNIT PRICETemperature sensor IC TEMP-VOLT CONV PREC SOT23B Digikey 1 0.70$ 0.70$ LCD NHD-C12864MZ-NSW-BTW or F-55472GNBJ-LW-CAN Digikey 1 16.00$ 16.00$ Transceiver Digi Zigbee PRO XBee Digi 1 20.00$ 20.00$ Miscellaneous Components ECPE 1 5.00$ 5.00$ Micro-controller 1 20.00$ 20.00$ Malfunction alarm beeper 1 1.00$ 1.00$ Battery 2 AA batteries 1 4.00$ 4.00$ PCB 1 33.00$ 33.00$ TOTAL AMOUNT 99.70$
Control Panel
Total Cost Estimate
MODULE ITEM DESCRIPTION VENDOR COUNT PRICE/UNIT PRICEController Panel 3 99.70$ 299.10$ Controller Box 1 188.73$ 188.73$ Zigbee Development Kit 1 200.00$ 200.00$ Subtotal 1 200.00$ 687.83$ LABOR COST Hours Pay/Hour PRICEBen Jusufovic 300 28.84$ 8,652.00$ Ben Cao 300 28.84$ 8,652.00$ Curtis Mayberry 300 28.84$ 8,652.00$ Thinh Luong 300 28.84$ 8,652.00$ TOTAL AMOUNT 35,295.83$
Total Estimate
Based on $60000 /year estimate from Career services
Gantt Chart
Testing and Verification of Prototype
Fabrication and Integration of Prototype
Detailed Design
Order Prototype Components
Design Research
Project Proposal
Discuss Roles
8/10/2010 8/30/2010 9/19/2010 10/9/2010 10/29/2010 11/18/2010 12/8/2010 12/28/2010
Gantt Chart
Start Date Completed Remaining
https://spreadsheets.google.com/viewform?formkey=dFE5Qk1aaGVuNXJfNjgwUW4zbTZ2ZFE6MQ
Tracking Our Progress
Questions?