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Transcript
Abstract Functional Requirements With increasing power consumption and costs in the home, many homeowners would like to monitor their energy usage. The Household Power Monitoring System (HPMS) will allow the homeowner to monitor the individual and total power used by household devices. With this information, the user can find ways to reduce their power costs. The system will also allow the user to identify devices that are becoming inefficient or those that are likely to break down. • • • • • • Introduction Technical Approach • General Background: • • • • • HPMS will record the power consumption of household devices so the user can analyze their usage. Technical Problem: The system will measure, encode, transmit, receive, decode, analyze, and display real and reactive power, voltage, and current as a function of time in a user-friendly manner. Operating Environment: HPMS will operate in any standard, residential setting. Intended Users and Uses: The system is intended for any homeowner interested in tracking their total power consumption and the consumption of individual devices. • System’s communications will be reliable Measurements of power will consider voltage irregularities Data will be displayed in an easily understood format The system must be safe for any home environment The system will not interfere with other household devices Utilize obsolete PC’s to compile and display the data collected. Use current transformers and digital meters to measure power usage. Transmit and receive data using household wiring; possibly X-10 protocol. TOTAL POWER MEASUREMENT HOME WIRING ENCODING (A / D) TRANSMISSION HARD WIRING SERIAL ANALYSIS DISPLAY Measurable Milestones • • • • SERIAL HOME WIRING SERIAL • • • • • System complexity Cost Available technology May 02-04 Team Information Design completed Prototype completed Testing completed Final product completed Testing Approach Design Constraints Advisors: Dr. John Lamont Dr. Ralph Patterson III RECEIVE DECODE The prototype will be a stand-alone system capable of recording total power usage of the home at the breaker box. Individual satellite modules will record the on / off cycles of home devices and communicate the data back to the PC. Total power usage and on / off cycles will be compiled by an obsolete PC that will analyze it and give the user a device by device breakdown of the power used. Assumptions & Limitations Team Members: Jason Muehlmeier Yohan Blount Steven Woerdehoff Paul Jonak HARD WIRE End Product Description The HPMS system will measure the total power consumption. It will have the ability to break it down on a device basis and report it in a useful manner to the homeowner. • • • APPLIANCE MODULE FOR ON / OFF TIME HARD WIRE Design Objectives Assumptions: • The user will be able to operate a simple computer interface. • The user will have a basic understanding of electricity and the concept of power. • The user will be knowledgeable of the local utility rate and billing schedule. Limitations: • The system can only operate with a modern, grounded electrical system. • The system can only operate with a 60Hz, 120/240V outlet format. Monitoring device can be attached to any 120/240V device Data collection components testing Data transmission testing Integration of components testing Data display testing Final system testing Budget Client: Herbert Harmison [email protected] Personal Effort Budget Financial Budget Steve Jason Budgeted Time Time Spent Paul Yohan 0 50 100 Equipment & Parts Personal Computer Poster 150 Hours Total Estimated Effort is 550 Hours Total Estimated Budget is $200