Friday Forum

DELTA Smart House: 

DELTA Smart House Duke University Mark Younger mark.younger@duke.edu 2.13.2004

Scope: 

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 Research

Benefits to Departments: 

Benefits to Departments Augment Curriculum Cross-Disciplinary Project Mgmt & Communications Experience Publications & Publicity Relationships with Corporations Potential Intellectual Property

Benefits to Community: 

Benefits to Community Sustainability / LEED Test Bed Educational Outreach High Profile

Timeline: 

Timeline 2004 2003 2005

Student Examples: 

Student Examples

Remote Patient Monitoring System: 

Remote Patient Monitoring System Neil Abraham February 13,2004 DELTA Smart House Neil Abraham February 13,2004

Our Vision: 

Our Vision freedom the to observe anytime, at anywhere.

Our Vision: 

Our Vision Visiting hours have just been extended.

system overview : 

Patient EKG Windows PC PDA Cell phone PC ? Internet “Server”-side implementation “Client”-side consumption system overview  ‚ ƒ „ …

Slide12: 

phase one Patient EKG  Patient hooked up to EKG Heart rate the source of data

Slide13: 

phases two - four 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 Windows PC ‚ ƒ Internet „

Slide14: 

PDA Cell phone PC ? Internet … phase five Data can be accessed from any Net-enabled device, allowing real-time monitoring of the patient.

system overview : 

Patient EKG Windows PC PDA Cell phone PC ? Internet “Server”-side implementation “Client”-side consumption system overview  ‚ ƒ „ …

Slide16: 

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

Slide17: 

Want to Help? BME Professors/ Medical Instrumentation experts CS Professors/Web services/.NET experts Email: ga14@duke.edu Patenting

Adaptive Filtering: 

Adaptive Filtering REQUIREMENTS Real-time application Reference signal SPECIFICATIONS TMS320C67x TI DSK x6711, x6713 MATLAB STEREO cable speakers, microphone PROBLEM: Background noise from within bandpass range are remain, such as the stereo or television SOLUTION: Adaptive filters

LMS Algorithm: 

LMS Algorithm LMS block diagram 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. REFERENCE: http://cnx.rice.edu/content/m10481/latest/

Data Flow: 

Data Flow Texas Instruments DSP TMS320C6711, x6713 Code Composer Studio v2.0 C code, compiled and assembled for TI chip

Anti-Aliasing: 

Anti-Aliasing A programmable digital low pass filter is used for anti-aliasing. 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: 

DELAY

Hudson Lab 01-A Data: 

Hudson Lab 01-A Data

Current Issues: 

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: 

Architectural Design

Slide26: 

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: 

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 Standard air control systems in residential areas are typically only about 15% effective, and only affect dust and other large particles. Radon

Media-on-Demand System: 

Movies/ Music Stored Playback of any media file Playback of any media file TV Recordings Stored Media-on-Demand System

Photovoltaics: 

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 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 BP solar panels Thin film laminated roof

Water Catchment and Purification: 

Water Catchment and Purification Water: ~ Rain water catchment and purification ~ Grey water purification and reuse ~ Water conservation - low-flow toilets - faucet aerators and low- flow showerheads - water efficient appliances Environmental Initiatives: ~ Sewage reduction ~ Constructed wetland - Water Purification - Sewage Reduction ~ Roof-top garden ~ Water conservation awareness ~ Gray water heat recovery ~ LEED Standards

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 LED Lighting in Smart House

Building Materials: 

Building Materials Energy efficient insulation Green roof Recycled and salvaged materials

Solar Air Conditioning System: 

Solar Air Conditioning System 4kw Flat Plateat Exchanger Ammonia Absorption

Other: 

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?: 

Why bother? Georgia Tech: Aware Home UPenn: Weiss Tech House Carnegie Mellon: Intelligent Workplace MIT: Project Aire Columbia: Biosphere 2

DELTA Project: 

DELTA Project Duke University www.DELTA.pratt.duke.edu