DELTA Smart House Duke University Mark Younger [email protected] 2.13.2004 Scope - Educating the student through hands-on, outside the classroom, team-oriented, project-based learning - Differentiator: students live in.
Download ReportTranscript DELTA Smart House Duke University Mark Younger [email protected] 2.13.2004 Scope - Educating the student through hands-on, outside the classroom, team-oriented, project-based learning - Differentiator: students live in.
DELTA Smart House Duke University Mark Younger [email protected] 2.13.2004 Scope - Educating the student through hands-on, outside the classroom, team-oriented, project-based learning - Differentiator: students live in house, continually updating it with new ideas and technologies while experiencing the effects of their own designs Research Research within the DELTA Smart Home will benefit home occupants within the three E’s: Energy & Efficiency, Environment & Health, and Entertainment & Communications Simultaneously, the fourth E, Education, will be evident in all aspects of the project as we seek to educate first the student and secondly the consumer Benefits to Departments • Augment Curriculum • Cross-Disciplinary •Project Mgmt & Communications Experience Publications & Publicity Relationships with Corporations • Potential Intellectual Property Benefits to Community •Sustainability / LEED Test Bed •Educational Outreach • High Profile Timeline 2003 2004 2005 Student Examples DELTA Smart House Remote Patient Monitoring System Neil NeilAbraham Abraham February February13,2004 13,2004 Our Vision the freedom to at anytime, observe anywhere. Our Vision Visiting hours have just been extended. system overview EKG Internet Windows PC Patient “Server”-side implementation ? PDA Cell phone PC “Client”-side consumption phase one EKG Patient • Patient hooked up to EKG • Heart rate the source of data phases two - four Internet Windows PC • 2: Patient’s vital signs sent to PC • 3: Data extracted from EKG software • 4: Patient’s data exposed as a Web service to the Internet phase five Internet ? PDA Cell phone PC Data can be accessed from any Netenabled device, allowing real-time monitoring of the patient. system overview EKG Internet Windows PC Patient “Server”-side implementation ? PDA Cell phone PC “Client”-side consumption benefits • Real-time patient monitoring • Low-cost implementation • Software runs on existing, legacy infrastructure • High ROI, hospitals provide better healthcare • Doctors make fewer rounds • End-users have the ability to monitor loved ones anytime, anywhere Want to Help? • BME Professors/ Medical Instrumentation experts • CS Professors/Web services/.NET experts • Patenting Email: [email protected] Adaptive Filtering Background noise from within bandpass PROBLEM: range are remain, such as the stereo or television SOLUTION: Adaptive filters • REQUIREMENTS – Real-time application – Reference signal • SPECIFICATIONS – – – – – TMS320C67x TI DSK x6711, x6713 MATLAB STEREO cable speakers, microphone LMS Algorithm The adaptive filter, W, is adapted using the least mean-square algorithm, which is the most widely used adaptive filtering algorithm. First the error signal, e[n] , is computed as e[n] =d[n] −y[n] , which measures the difference between the output of the adaptive filter and the output of the unknown system. On the basis of this measure, the adaptive filter will change its coefficients in an attempt to reduce the error. LMS block diagram REFERENCE: http://cnx.rice.edu/content/m10481/latest/ Data Flow • Texas Instruments DSP – TMS320C6711, x6713 – Code Composer Studio v2.0 – C code, compiled and assembled for TI chip Anti-Aliasing A programmable digital low pass filter is used for antialiasing. FREQUENCY DEVICES 844 Series Digitally Programmable 4-Pole Active Filter Fs = 10kHz, so the anti-aliasing frequency should be set at 5kHz (Fs/2) A 4-Pole Low Pass Butterworth filter is created by setting DIP switches to 00110001b Measurements show the filter working with a cutoff of 5.033kHz DELAY Hudson Lab 01-A Data Current Issues Recent Problems & Solutions -No coherence for room analysis computer sound card the problem? Pursuing MATLAB analysis and RTDX channels -Multithreading / Parallell Processing do we need two cards / chips? Architectural Design Electricity Monitoring Group Goals: -log and display electricity usage for every circuit in the house -create a portable monitoring system that can log and display data for a single device -be able to network all this information together -create a website that will display graphs of electricity use that can then be added to the DELTA home page Plan: -acquire (purchase/donation) a system to monitor the whole house -build a portable monitoring station from scratch Indoor Air Quality GOALS: •Choosing pollutant-free building materials •Ensuring adequate ventilation and thorough filtration •Monitoring & Reporting Pollutant Levels HEALTH CONCERNS: •Indoor air pollutant levels are generally 2-5 higher than outdoor air pollutants, and in some cases 100 times higher. •EPA Studies have shown that people spend as much as 90% of their time indoors Radon •Standard air control systems in residential areas are typically only about 15% effective, and only affect dust and other large particles. Media-on-Demand System Movies/ Music Stored Playback of any media file Playback of any media file TV Recordings Stored Photovoltaics • • Ultimate goal: Maximize cost efficiency, produce 15% house energy Considerations: – Maximize efficiency • • – Angle of panels Location in non-shaded area (drastic drop if shaded) Technologies • Flat panels – • expensive, more powerful w/ no shade Thin film – – – BP solar panels Less expensive, Less power unless shaded, bulky Aesthetically pleasing Purpose • – power lighting and devices with low energy consumption • Laptop recharging Grid connection and storage • Converter, Disconnect switch, Meter • Batteries, Inverters • Schematic of connected system with solar hot water heater and Thin film laminated roof Water Catchment and Purification • Environmental Initiatives: ~ Sewage reduction ~ Constructed wetland - Water Purification - Sewage Reduction ~ Roof-top garden ~ Water conservation awareness ~ Gray water heat recovery ~ LEED Standards • Water: ~ Rain water catchment and purification ~ Grey water purification and reuse ~ Water conservation - low-flow toilets - faucet aerators and lowflow showerheads - water efficient appliances LED Lighting in Smart House Key Benefits of LED Lights • • • • • • • • • • • • Lasts up to 100,000 hours Cost saving on maintenance More energy efficient Design Flexibility Superior Color range Robust solid state technology Dynamic color control Fully Dimmable No Mercury content Low heat and UV output Cold start capable Low voltage operation Pictures from http://www.lrc.rpi.edu Building Materials • Energy efficient insulation • Green roof • Recycled and salvaged materials Solar Air Conditioning System • 4kw Flat Plateat Exchanger Ammonia Absorption Other 1. Fiber Optic Lighting 2. RFID Tracking 3. Improved Fire Detection Reporting 4. Permaculture Garden 5. Grey-Water Heat Recovery 6. Home Automation 7. Structural Foundation Monitoring (cracks & moisture) Why bother? Georgia Tech: Aware Home UPenn: Weiss Tech House Carnegie Mellon: Intelligent Workplace MIT: Project Aire Columbia: Biosphere 2 DELTA Project Duke University www.DELTA.pratt.duke.edu