Helicopter Data Acquisition System

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Helicopter Data Acquisition System

• ECE 4512 Senior Design I

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Team Members
David Paul
Robert McInnis
Dr. Rob King (Advisor)
Aaron Hill
Jason Schemmel
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Team Responsibilities

• Aaron Hill (Power)
• Circuit board layout, power consumption, and
  package design

• David Paul (Controls)
• Simulink, sensor pak installation, and control
  circuit design

• Jason Schemmel and Robert McInnis
  (Communications)
• RF design, circuit simulation, and antenna design

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Purpose

• To implement a helicopter data acquisition system
  obtaining real-time data from the fuselage and a
  rotating blade
• Data from rotating blade can only be obtained
  accurately with a wireless communications system

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Motivation
Pivot
Hub
Blade
POT
Strain Gauge
Nonlinear stiffness spring
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Motivation
Computer simulation of baseline case, blade lead
angles without Duffing stiffness spring
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Motivation
Computer simulation of baseline case, blade lead
angles with Duffing stiffness spring
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Project Abstract
Strain Gauge
Position Transducer
Battery Pack Power Source
Wheatstone Bridge
Wheatstone Bridge
Amplifier Signal Conditioner
21 Mux
KEY Power Signal EM Signal
Sampler/ A/D Converter
Transmitter
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Project Abstract
Receiver
KEY Power Signal EM Signal Data Enable
Internal Sensor Package
D/A Converter/ Buffer
12 Demux
Helicopter House Power
DAQ PCMCIA
Laptop
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Components
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Design Requirements

• Control Circuit
• Power
• Signal Conditioning
• Transmission Frequency

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Design Requirements

• Data Transmission
• Sampling Rate
• Antenna Polarization
• Calibration

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Test Requirements
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Summary
Transmitting/ Receiving System
Sensor Pak
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Future Improvements

• Implement transmitting on/off switch

• Automated helicopter control system

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References

• M.L. Deutsch, Ground Vibrations of Helicopters,
  Journal of the Aeronautical Sciences, Vol. 15,
  No.5, May 1946.
• R.W. Prouty, Helicopter Aerodynamics, PJS
  Publishers, Inc., Peoria, IL, 1985.
• B.P. Lathi, Modern Digital and Analog
  Communication Systems, Oxford University Press,
  New York, New York, 1998
• C.W. Sayer, The Complete RF Technicians
  Handbook, PROMPT Publications, Indianapolis,
  Indiana, 1998
• United Technologies Online. Available
  http//www.utc.com/discover/index.htm 2000,
  September 3.
• R.W. Prouty, Helicopter Performance, Stablility,
  and Control, PWS Publishers, Boston, MA, 1986.
• Title 47, Part 15 Radio Frequency Devices,
  Code of Regulations, Federal Communications
  Commission, USA, 16 April 1999.
• Omega Technologies Online. Available
  http//www.omega.com/literature/transactions/volum
  e3/strain2.html 2000, September 6.