Realtime Monitoring and Diagnostic Solution for an HVAC System ECE Team 169 Anthony Bellantoni EE Greg Carmichael EngrPhys Joe Grassi EE Sponsored by Qualtech Systems Inc Advisor ID: 773574
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Real-time Monitoring and Diagnostic Solution for an HVAC System ECE Team 169 Anthony Bellantoni (EE) Greg Carmichael ( EngrPhys ) Joe Grassi (EE ) Sponsored by: Qualtech Systems Inc. Advisor: Professor John Chandy
Presentation Outline• Project Goals • Brief Explanation of Qualtech Systems, Inc. • Overview of TEAMS Software • HVAC Explanation • Updated and Completed Model • Overview of Detecting a Failure • Project Timeline & Budget • Project Limitations • Lessons Learned
Project Goals• Fix & Build Upon Previous Incomplete Senior Design Project - Update Diagnostic HVAC Model for ITEB • Obtain real-time data from the building sensors - Develop Failure-Detection Code • Combine model and code to detect for faults in real-time.
Qualtech Systems, Inc.•Located in East Hartford, Connecticut (Founded in 1993)• Provide advanced system health management, integrated diagnostics and telemaintenanceWorks on any system Helps improve equipment productivity•TEAMS - Testability Engineering and Maintenance System
TEAMS Testability Engineering and Maintenance System Consists of Multiple Components Designer RDS Remote Diagnostic Server RT “Real-Time” Data Collection http://tomgpalmer.com/wp-content/uploads/legacy-images/FLASH%20LIGHT.jpg
TEAMS - DesignerUsed to create a model of a system, including components with their respective test pointsCan be used to model any complex system (e.g.-MRI, Car, Building, etc.)
TEAMS - RDSOnline Server that connects all components of TEAMS softwareDecides Which Component is Most Likely Failing From the DesignerProvides Possible Solutions during Manual MaintenanceStores information gathered for future analyses
TEAMS - RTProvides Diagnostics in Real-TimeConnects Developed Code with Generated Sensor Values to RDSAllows for constant connection
What is HVAC?Heating Ventilation and Air ConditioningProcesses Air in a Building, Vehicle, or Other Structure Maximize Occupant(s) Comfort Of Enclosed AreaRange from “Central Air” in Residential Homes to Complex Multi-Building Systems
ITE HVAC SystemBasement (Heat Exchanger)Tunnel to COGEN plantPenthouse (Air Handler) VAV (Variable Air Volume) One For Each RoomMeasured on Every Floor at Every Point in System
ITE Penthouse Schematic
VAV Schematic
Procedure – ITEB Schematic
3rd Floor Schematics
Procedure - Designer
Last Year’s Designer Model
Our Updated Designer Model
Procedure - RDS
RDS Photos
Procedure – RT
Procedure – Detecting Failures
Failure Detection Code Process1) Extract sensor values from text file and determine whether or not a failure is occurring 2) Export results file into TEAMS-RT 3) TEAMS-RT combines test results with our model and determines possible failure points
How to Determine a FailureSet threshold value for maximum deviation from set point Cannot assume failure after one testInitiate a counter to determine number of tests in a row that fail If consecutive tests trend toward the set point, counter returns to 0 If deviation from the set point is less than the maximum allowed, counter returns to 0 If n tests in a row fail and do not approach set point, assume failure
Failure-Detection Method
Project Budgethttp://i.crn.com/images/free_cloud_400.jpghttp://blog.outreach.com/wp-content/uploads/2011/09/Church-events-on-no-Budget.jpg http://www.rosemarierealty.com/wp-content/uploads/2012/03/dreamstime_xs_17999966-300x300.jpg http://static.seekingalpha.com/uploads/2009/3/4/saupload_mar04_09_bm.jpg
Project TimelineTask September October November December January February March April Software access Gather & Review Schematics Research HVAC Update TEAMS Designer M odel Learn C ++ Syntax Develop Failure-Detection Code Merge Code With M odel in SDK and RDS Test - Debug - Cleanup
Final TasksConnect our Failure Results with TEAMS RT Connecting RT with RDS
Project LimitationsObtaining access to actual sensor values
Lessons LearnedTEAMS is capable of modeling large systemsDifficult for beginners and requires expert knowledge to buildHVAC systems are complexPrepare for setbacks Information from facilitiesRemote server issues
Questions?