POWER METERABSTRACTPowerPoint PresentationMember ContributionsBLOCK DIAGRAMVOLTAGE SENSING CIRCUITCURRENT SENSING CIRCUITMICROCONTROLLERLCD DISPLAYMEMORYTEST SPECIFICATIONSMOTIVATIONFUTURESUMMARYPOWER METERPOWER METERSENIOR DESIGN I ECE 4512MISSISSIPPI STATE UNIVERSITYELECTRICAL ENGINEERINGABSTRACTABSTRACTPower consumption is a major concern of consumers and industry. Everyone is billed for electric power. There is a need for an accurate and affordable means of determining the amount of energy usage by a particular device. The Power Meter provides an independent and tangible means of estimating energy costs on a per device scale. The Power Meter's ability to calculate energy cost and usage perceivably has numerous applications of both technical and economic importance to industry and consumer markets.TEAM MEMBERSTEAM MEMBERSTeam Advisor:Dr. Raymond WintonTeam Leader:Wei-Keat QuekTeam Member:Matt HemphillTeam Member:James NixonTeam Member:Scott FredrickMember ContributionsMember ContributionsWei-Keat Quek- A/D Converter, LCD Display, Board designMatt Hemphill- Voltage sensing circuit, Simulation, Battery unitScott Fredrick- Current sensing circuit, Software,Web pageJames Nixon- Microprocessor, Hardware, DocumentationBLOCK DIAGRAMBLOCK DIAGRAMVOLTAGE SENSING CIRCUITVOLTAGE SENSING CIRCUIT0 TO 120 VrmsFREQUENCY 60 HzFILTERED FOR NOISE REDUCTIONCURRENT SENSING CIRCUITCURRENT SENSING CIRCUIT0 TO 10 AFILTERED FOR NOISE REDUCTIONAMPLIFIED FOR STABILITYMICROCONTROLLERMICROCONTROLLERMICROCHIP'S PIC16C84GENERAL-PURPOSE, LOW-COST, 18-PIN, 8-BITON-CHIP EEPROM MEMORY, C PROGRAMMABLELCD DISPLAYLCD DISPLAYLOW POWER CONSUMPTION3 1/2 DIGITSEASY TO READMEMORYMEMORY128K SRAM5 VOLTSPEED 80μsTEST SPECIFICATIONSTEST SPECIFICATIONSRequirement Circuit Simulation Firmware Software Oscilloscope & Test Equipment Size & Packaging Power Range Voltage Range Current Range Energy Range Power Waveform Power Frequency Memory Capacity Power Accuracy Energy Accuracy Physical SizeMOTIVATIONMOTIVATIONPROVIDES AN INDEPENDENT & DIRECT MEANS OF ACCURATELY CALCULATING ENERGY CONSUMPTION PROVIDES A SAFE, LOW-COST USER-FRIENDLY METHOD OF DETERMINING POWER USAGEHELPS TO CONSERVE ENEGRYFUTUREFUTUREEXPAND FUNCTIONS FOR BOTH AC & DC MEASUREMENTSEXPAND MEASURING RANGEIMPROVE TOLERENCE LEVELSUSE RECHARGEABLE BATTERY UNITALLOW PC CONNECTIVITYIMPROVE INTERNAL POWER CONSUMPTIONSUMMARYSUMMARYRANGE: 1 TO 1000 WATTSACCURACY: ±3% OF READINGENERGY RANGE: 1 WHr - 24 KWHr ENERGY ACCURACY: ±3% OF READINGLOAD VOLTAGE: 0 TO 120 VrmsWAVEFORM: SINE, MODSINE, SQUARE,TRIANGLEFREQUENCY: 60 HzMEMORY:
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