Display of Stability Data for Safe Tractor Operation

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 Sommer - 02/13/03 NIOSH Tractor Workshop 1

Fundamental Hypothesis n Operators can learn to avoid tractor overturn Safety training n On-line sensors and display n Sommer - 02/13/03 NIOSH Tractor Workshop 2

Fundamental Goals Display n Stability information n Safe operation n Sommer - 02/13/03 NIOSH Tractor Workshop 3

Past Efforts n 1/8 scale overturn tractor and terrain board n n n Farm safety presentations across the Northeast Scientific publications Full-size umbilical agricultural tractor n n Annual presentations at PA Ag Progress Days exposition Scientific publications Sommer - 02/13/03 NIOSH Tractor Workshop 4

Full-size Umbilical Tractor n Ford 2080, 3580 lbm, 36 HP, rear wheel drive, 300+ overturns Sommer - 02/13/03 NIOSH Tractor Workshop 5

Current Efforts n n n 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 Sommer - 02/13/03 NIOSH Tractor Workshop 6

FY 1 Accomplishments n n n 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 Sommer - 02/13/03 NIOSH Tractor Workshop 7

Full-size R/C Tractor n New Holland TN 65, 5300 lbm, 47 HP, four wheel drive, 30+ overturns Sommer - 02/13/03 NIOSH Tractor Workshop 8

Full-size R/C Tractor n New Holland TN 65, 5300 lbm, 47 HP, four wheel drive, 30+ overturns Sommer - 02/13/03 NIOSH Tractor Workshop 9

Ag Progress Days 08/20/02 (MPG) Sommer - 02/13/03 NIOSH Tractor Workshop 10

Side Overturn (On-board MPG) Sommer - 02/13/03 NIOSH Tractor Workshop 11

Near Miss (On-board MPG) Sommer - 02/13/03 NIOSH Tractor Workshop 12

Sensor Validation Sommer - 02/13/03 NIOSH Tractor Workshop 13

FY 2/FY 3 Plans n n n 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 Sommer - 02/13/03 NIOSH Tractor Workshop 14

Future Plans n n n Sensor/display interface standards Overturn tests with other implements Display n n n Ergonomics Cognition Psychology Sommer - 02/13/03 NIOSH Tractor Workshop 15

Major Resources n n n 1/8 scale tractor and terrain board 2 acre enclosed overturn test arena Full-size umbilical tractor Full-size R/C skid steer loader Sensor/microprocessor/display design Sommer - 02/13/03 NIOSH Tractor Workshop 16

Questions? n http: //www. me. psu. edu/sommer/projects/tractor/ Sommer - 02/13/03 NIOSH Tractor Workshop 17