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Abstract
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Article Information:
Design, Development and Evaluation of a Digital Tractor Dynamometer
Mohammad Reza Havasi, Mohammad Javad Shiekhdavoodi, Navid Alaei Shini and Móslem Sami
Corresponding Author: Móslem Sami
Submitted: January 19, 2012
Accepted: February 17, 2012
Published: March 26, 2012 |
Abstract:
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In this study, to measure drawbar pull of agricultural tractors, a digital dynamometer was designed,
developed and evaluated based on AT89C52 microcontroller. The microcontroller was programmed using
assembly language. The inputs of microcontroller supplied from a kind of S shape electronic loadcell that has
4 resistant strain gauges with Wheatstone Bridge configuration. The amplifier AD524 and an analogue to digital
converter ADC0804 were used in electronic parts of the set. During dynamometer calibration the correlation
coefficient (R2) between force and output voltage was 0.99. Ultimately, the laboratory tests and evaluation were
performed and the correct performance of set was proved.
Key words: Drawbar pull, loadcell, microcontroller, tractor, , ,
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Cite this Reference:
Mohammad Reza Havasi, Mohammad Javad Shiekhdavoodi, Navid Alaei Shini and Móslem Sami, . Design, Development and Evaluation of a Digital Tractor Dynamometer. Asian Journal of Agricultural Sciences, (2): 145-148.
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ISSN (Online): 2041-3890
ISSN (Print): 2041-3882 |
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