Team Bi-Team Bi-directionaldirectional

-Keith Beland-Keith Beland-Christian Brinegar-Christian Brinegar

-Justin Marsha-Justin Marsha

NRG SystemsNRG Systems

NRG Systems is a company that is NRG Systems is a company that is leading the global industry for wind leading the global industry for wind power development. They produce power development. They produce precise, reliable, and proven wind precise, reliable, and proven wind assessment and turbine control assessment and turbine control equipment. Prior to installing a wind equipment. Prior to installing a wind turbine, one would test the site for turbine, one would test the site for proper winds. We are to test the proper winds. We are to test the device used to measure wind direction.device used to measure wind direction.

Problem StatementProblem Statement

Our task here was to create a Our task here was to create a device that can be used to test the device that can be used to test the linearity, centering, and dead band of linearity, centering, and dead band of an NRG systems #200P Wind Direction an NRG systems #200P Wind Direction Vane. This testing must also be done Vane. This testing must also be done with at most 1.8 degree increments with at most 1.8 degree increments with a reasonable test time.with a reasonable test time.

NRG #200P Wind NRG #200P Wind VaneVane

• precision conductive plastic potentiometer

►Dead band <8 DegreesDead band <8 Degrees►LinearityLinearity►Centering <4 DegreesCentering <4 Degrees

Our SolutionOur Solution

►For our final design we decided to use For our final design we decided to use a stepper motor in unison with a 1 to a stepper motor in unison with a 1 to 1 ratio pulley system that will rotate 1 ratio pulley system that will rotate and test the device, while and test the device, while incorporating LabVIEW for running all incorporating LabVIEW for running all software aspects of the design.software aspects of the design.

System OverviewSystem Overview

Electrical SystemElectrical System

► JustinJustin Electrical System ComponentsElectrical System Components Motor Driver CircuitMotor Driver Circuit Other CircuitryOther Circuitry

Electrical Electrical SystemSystem

Motor Driver CircuitMotor Driver Circuit

This shows the FET driver circuit required to power the stepper motor using the DAQ digital outputs.

Other CircuitryOther CircuitryBreak-Beam Wind Vane

Software SystemSoftware System

►ChristianChristian What is LabVIEW?What is LabVIEW? Entire ProgramEntire Program Data Acquisition SoftwareData Acquisition Software Break-Beam SoftwareBreak-Beam Software

LabVIEW SoftwareLabVIEW Software

►NI LabVIEW graphical development has NI LabVIEW graphical development has revolutionized the development of revolutionized the development of scalable test, measurement, and control scalable test, measurement, and control applications. applications.

►Engineers can rapidly and cost-Engineers can rapidly and cost-effectively interface with measurement effectively interface with measurement and control hardware, analyze data, and control hardware, analyze data, share results, and distribute systems. share results, and distribute systems.

Entire ProgramEntire Program

Switch on activates LED search portion of the program.

Break-Beam SoftwareBreak-Beam Software

This portion steps the motor and tests the photoresistor simultaneously.

Data Acquisition SoftwareData Acquisition Software

This portion steps the motor and acquires data from the wind vane while writing it to an excel file.

Mechanical SystemMechanical System

►Keith Keith SolidWorksSolidWorks Wind Vane Test FixtureWind Vane Test Fixture Entire Physical SystemEntire Physical System

Design in SolidWorksDesign in SolidWorks

Wind Vane Test FixtureWind Vane Test Fixture

Entire Physical SystemEntire Physical System

Work BreakdownWork Breakdown► KeithKeith

Stepper motorStepper motor SolidWorks designSolidWorks design Rapid prototypingRapid prototyping

► ChristianChristian Web pageWeb page Physical assemblyPhysical assembly Circuit board assemblyCircuit board assembly SoftwareSoftware

► LabVIEW softwareLabVIEW software► DAQDAQ

► JustinJustin Electronic designElectronic design

► Break-beamBreak-beam► Circuit Board DesignCircuit Board Design

Physical design & assemblyPhysical design & assembly Software helpSoftware help

BudgetBudgetItemItem CostCost Price to TeamPrice to Team

Stepper MotorStepper Motor $12$12 $0 $0

Break Beam Break Beam SystemSystem(LED, Photo Sensor)(LED, Photo Sensor)

$2.50$2.50 $0$0

FET (4)FET (4) $2.00$2.00 $0$0

Shop MaterialsShop Materials(80-20 Alum Chan)(80-20 Alum Chan)

$16.95$16.95 $0$0

Misc. Misc. MechanicalMechanical(nuts, bolts, washers, (nuts, bolts, washers, composites, o-rings)composites, o-rings)

$40$40 $15$15

Misc. ElectricalMisc. Electrical(i.e. circuit board, wire, (i.e. circuit board, wire, terminal blocks, terminal blocks, resistors, switch)resistors, switch)

$20$20 $0$0

DAQ/LabVIEW DAQ/LabVIEW (S.E.)(S.E.) $150$150 $0$0

TotalTotal $243.45$243.45 $15.00$15.00

Next StepsNext Steps

►Printed circuit boardPrinted circuit board►HousingHousing►More efficient break-beam systemMore efficient break-beam system►Closer tolerances on pulleysCloser tolerances on pulleys

Thank you!!Thank you!!

►Roger Howes and Michael WrightRoger Howes and Michael Wright►Bob RoyceBob Royce►Chris Tall and others at NRG SystemsChris Tall and others at NRG Systems

Questions?Questions?