Sommer - 02/13/03 NIOSH Tractor Workshop 1

Display of Stability Data for Safe Tractor Operation

D.J. Murphy and H.J. Sommer

The Pennsylvania State University

NIOSH Northeast Center for Agricultural Safety and Health

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Fundamental Hypothesis

Operators can learn to avoid tractor overturn Safety training On-line sensors and display

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Fundamental Goals

Display Stability information Safe operation

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Past Efforts

1/8 scale overturn tractor and terrain board Farm safety presentations across the Northeast Scientific publications

Full-size umbilical agricultural tractor Annual presentations at PA Ag Progress Days

exposition Scientific publications

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Full-size Umbilical Tractor

Ford 2080, 3580 lbm, 36 HP, rear wheel drive, 300+ overturns

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Current Efforts

Cost-effective commercial sensors Validate using full-size tractor Which implements are most often

involved in tractor overturn ? Overturn tests with implements Psychology and ergonomics of display

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FY1 Accomplishments

New full-size radio control (R/C) agricultural tractor

Selected MEMSIC dual axis accelerometer ($15) and Atmel processor ($5)

Temperature compensation for zero shift and sensitivity

On-line display and on-board camera Validation tests at Ag Progress Days 8/02

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Full-size R/C Tractor

New Holland TN65, 5300 lbm, 47 HP, four wheel drive, 30+ overturns

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Full-size R/C Tractor

New Holland TN65, 5300 lbm, 47 HP, four wheel drive, 30+ overturns

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Ag Progress Days 08/20/02 (MPG)

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Side Overturn (On-board MPG)

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Near Miss (On-board MPG)

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Sensor Validation

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FY2/FY3 Plans

CAN bus for sensor and display Overturn tests with rear deck mower Liaison with PA DOT (data logging on

mowers) Liaison with John Deere (CAN bus) Review overturn reports involving attached

implements

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Future Plans

Sensor/display interface standards Overturn tests with other implements Display

Ergonomics Cognition Psychology

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Major Resources

1/8 scale tractor and terrain board 2 acre enclosed overturn test arena Full-size umbilical tractor Full-size R/C tractor Full-size R/C skid steer loader Sensor/microprocessor/display design

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Questions?

http://www.me.psu.edu/sommer/projects/tractor/