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    Abstract
2012 (Vol. 4, Issue: 2)
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 

Key words:  Drawbar pull, loadcell, microcontroller, tractor, , ,
Vol. 4 , (2): 145-148
Submitted Accepted Published
January 19, 2012 February 17, 2012 March 26, 2012
Abstract:

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.
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  Cite this Reference:
Mohammad Reza Havasi, Mohammad Javad Shiekhdavoodi, Navid Alaei Shini and Móslem Sami, 2012. Design, Development and Evaluation of a Digital Tractor Dynamometer.  Asian Journal of Agricultural Sciences, 4(2): 145-148.
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ISSN (Online):  2041-3890
ISSN (Print):   2041-3882
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