Analysis of Combine Harvester Sound Pressure Level in One-Third Octave Band Frequency
Journal Title: Journal of Agricultural Machinery - Year 2014, Vol 4, Issue 2
Abstract
Workplace factors such as sound must have the minimum impact on the operators of combine harvester, so that they can guide and control many functions of the combine. In this study, some factors affecting the noise generated by two combine harvesters John Deere 1055 and Sampo 3065 were evaluated. Research factors were engine speed, gear ratios, type of operation and microphone distance. The results of this study indicated that sound pressure level decreased with increasing center frequencies. The sound pressure level of John Deere and Sampo combine at center frequency of 4000 Hz were 87.96 and 84.73 db, respectively. The results showed also that the maximum sound pressure of John Deere and Sampo combines were116db at frequency of 250 Hz and 111.1db at frequency of 40 Hz, respectively.
Authors and Affiliations
A. Maleki,M. Lashgari,
Keywords
Related Articles
- EP ID EP717710
- DOI -
- Views 28
- Downloads 0
Effect of poultry fat oil biodiesel on tractor engine performance
Introduction: Depletion of fossil fuels and environmental degradation are two major problems faced by the world. Today fossil fuels take up to 80% of the primary energy consumed in the world, of which 58% is consumed by...
Ergonomic evaluation of tea farmers in north of Iran during plucking using body modeling
Introduction People in different jobs may face skeletal problems in their body due to poor physical conditions as a result of poor working conditions and inappropriate equipment. Harvesting tea is one of those jobs that...
Qualitative and quantitative analysis of biogas generated from co-digestion of cow dung, municipal sewage and kitchen waste
Introduction As reported by Sabetghadam (2005), 53.4, 36.3, 1.1, 8.9, and 0.2% of total energy consumption in Iran consisted of oil products, natural gas, coal, electricity energy, and modern energy sources, respectively...
Comparison of Four Different Methods for Agricultural Positioning Using GPS and IMU
In this research, four different positioning methods were compared in order to evaluate their accuracy, using a remotely controlled robot on a specific route. These methods included: using a single GPS module, combining...
Monitoring Rice Land Changes Using GIS and RS
IntroductionRice is the fourth most consumed grain worldwide. In recent years, monitoring the area under rice cultivation; as a strategic crop in Gilan province has become more important because of the uncontrolled migra...