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Published byKristina Snow Modified over 8 years ago
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Team Gong FDR SDP10 1 /13 Final Design Review Team Gong: Jason Dodge Eric Every Andrew Hills Alan R Levin F.R.I.D.G.E.
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Team Gong FDR SDP10 2 /13 Outline Review of Project Final Design Demonstration Conclusions and Future Work
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Team Gong FDR SDP10 3 /13 Review Goal Increase frequency to 60Hz by reducing load on grid Implement a system that can adjust duty cycle on appliances based on user preferences and utility input.
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Team Gong FDR SDP10 4 /13 Review Continued Appliance Node Wired Communication Switch and thermometer retrofitted to refrigerator Voltage, Current, Frequency, and Energy measurements Customer Server Software Receives and sends messages to and from Appliance Node Utility Server Software Sends requests to Customer Control Software Collects information from Customer Server Software
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Team Gong FDR SDP10 5 /13 Block Diagram
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Team Gong FDR SDP10 6 /13 Multimeter Ammeter CSLA2CD Hall Effect Current Transformer 36.5 mV step size Voltmeter Hammond Manufacturing 161 Transformer 120VAC to 7VAC Voltage Divider 7VAC to 0.5VAC Metering IC ADE7753 RMS-to-DC Zero Crossing Frequency Detection
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Team Gong FDR SDP10 7 /13 Multimeter Schematic
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Team Gong FDR SDP10 8 /13 Switching Binary Switching with Thyristors (SCR) Photo Triac Driver Zero Voltage Triggering circuit Handles Inductive Loads
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Team Gong FDR SDP10 9 /13 Thermometer K- Type Thermocouple Thermal IC AD595 Thermocouple Amp 10mV/ o C -141 to 349 o C Adjustable freezing point
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Team Gong FDR SDP10 10 /13 Thermometer Schematic
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Team Gong FDR SDP10 11 /13 Microcontroller Scaled down to 32KB / 1 UART from 128KB / 4 UART Stayed with Arduino platform for code reuse Shared SPI bus for communication Modified Ethernet libraries Integrated ADE7753 communication libraries
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Team Gong FDR SDP10 12 /13 Demo Representation of System Fan represents inductive cooling element Light bulb represents heat When temperature rises, fan turns on When temperature falls, fan turns off Temperatures adjustable through GUI
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Team Gong FDR SDP10 13 /13 Conclusions and Future Work Conclusions Improved debugging techniques Check integrity of lab equipment Better understanding of Digital/Analog interaction Take into consideration shipping time Don't assume something works until it works Respect for AC voltage Future Work Low-Power Optimization Measure Power Factor More Advanced Software Control Scheme
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