Kingdom of Saudi Arabia King Saud University College of Food and Agricultural sciences Agricultural Engineering Dept MICROPROCESSOR UNIT FOR MONITORING ON-ROAD STABILTY FOR AGRICULTURAL TRACTORS BASED ON MS VISUAL C++ MS VISUAL C++ Abdulrahman A. Al-Janobi King Saud University Riyadh, Saudi Arabia

King Saud University College of Agriculture was established in College of Agriculture was established in Department of Agricultural Engineering was established in 1980 Department of Agricultural Engineering was established in 1980 We have 18 faculty members (power & machinery, Irrigation, Food processing, environment engineering) We have 18 faculty members (power & machinery, Irrigation, Food processing, environment engineering)

Introduction Implement Connection

Introduction Implement Connection

Tractor Jobs Off Road Tractor Performance: To get the most from the tractor. On Road Stability and Safety

The Importance of Stability and safety

The instrumented tractor

Instrumented Tractor In 1994, we established an instrumented tractor. In 1994, we established an instrumented tractor. The tractor was improved during these 11 years. The tractor was improved during these 11 years.

Objective The objective of this project was to develop a microprocessor unit for monitoring On-Road stability for agricultural tractors with mounted implements using MS Visual C++.

MICROPROCESSOR UNIT Hardware Hardware Software Software

MICROPROCESSOR UNIT FOR MONITORING ON-ROAD STABILTY FOR AGRICULTURAL TRACTORS BASED ON MS VISUAL C++ HARDWARE Data Collection Unit Distributed Box DBK11 DBK13 Torque on Rear Wheel Torque on Front Wheel Forces on TPL Stability MICROPROCESSOR UNIT FWS RWS 5 th S r.p.m Fuel

MICROPROCESSOR UNIT FOR MONITORING ON-ROAD STABILTY FOR AGRICULTURAL TRACTORS BASED ON MS VISUAL C++ HARDWARE Data Collection Unit DistributedDistributed Box DBK11 DBK13 Torque on Rear Wheel Torque on Front Wheel Forces on TPL Stability MICROPROCESSOR UNIT FWS RWS 5 th S r.p.m Fuel SOFTWARE

Torque on Front Wheel

Torque on Rear Wheel

Forces on TPL

Stability

Fifth Wheel

Engine Speed

Fuel Sensor

Distributed Unit MICROPROCESSOR UNIT

Processing Unit ASUS L4 SERIES P4 ASUS L4 SERIES P4 speed of 2.4 GHz speed of 2.4 GHz 40 G Byte hard Disk 40 G Byte hard Disk memory with 56MByte memory with 56MByte

start Information about Experiment Tractor Information Convert data to values based on Calibration Calculate the performance Save Data as Input File Save Data as output file Present Data in Figures, value, and indicator End Save the reading in Raw File Receive Data from Sensors Off Road

start Tractor Information Convert data to values based on Calibration Calculate the performance Save Converted data Save Data as output file Present Data in Figures, value, and indicator End Is tractor angle critical Warning Save Data in Raw File Data from Sensors Yes No On Road Experiment information

Advantages of the unit 2699 mm Wheel base Wt Wi 920 mm Φ 990 mm 1740 mm 1014 mm

Advantages of the unit About 10 reading per second About 10 reading per second 12 bit accuracy 12 bit accuracy Clear warning for the driver Clear warning for the driver Possibility to send a signal to stop tractor Possibility to send a signal to stop tractor

With this design, we may be able to reduce tractor accidence and improve the performance of the tractor

End