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Design and calibration of a fuel consumption measurement system for a diesel tractor CIGR Journal
Hamzeh Fathollahzadeh; Hossein Mobli; Ali Jafari; S.M.Hossein Tabatabaie.
 One of the best methods to measure fuel consumption of a tractor engine is using flow meter sensors on the tractor. In this study, a system for measuring fuel consumption was designed. The measurement system was installed on the engine of a 72.3 KW John Deere 3140 tractor. In this system, an electronic board was used to receive and save digital pulses sent by the flow meter sensors. One of the sensors was installed where fuel enters the injector pump, another flow meter was located where fuel returns to the tank. Accuracy of sensors in both the laboratory test and when working in field conditions were compared. Some capabilities of the system are:  measuring fuel consumption of the engine in temporal or local circumstances, showing...
Ano: 2011 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1408
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On-site measurement of soil moisture content using an acoustic system CIGR Journal
Elham Meisami-asl; A. Sharifi; Hossein Mobli; Afshin Eyvani; Reza Alimardani.
Precision agriculture is a farming management concept based on observing and responding to intra-field variations.  One of the most important soil properties in farming is soil moisture content and it is necessary to develop new technique for measuring this property in a precision farming system.  This study investigates the measurement of moisture content in soil using an on-site, easy to use and real-time acoustic wave system.  The system consists of the propagation of acoustic waves such as sweep frequency sound wave (10-300 Hz) and multiple tone sound waves (120 Hz) through the soil.  Some properties of these acoustic waves enable estimation of soil water content such as peak amplitude (A), total power (TP), total harmonic distortion (THD) and signal...
Palavras-chave: Keywords: acoustic waves; Soil moisture content; Sound properties.
Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2571
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