Spatial variability of noise level in agricultural machines

Engenharia Agrícola

Tadayuki Yanagi Junior²  Leonardo Schiassi¹  Diogo F. Rossoni¹  Patrícia F. Ponciano¹  Renato R. De Lima¹ 

[1] ,Universidade Federal de Lavras Departamento de Engenharia Lavras MG

关键词: human environment;    acoustic comfort;    occupation health;    geostatistics;    ambiência humana;    conforto acústico;    saúde ocupacional;    geoestatística;   

DOI  :  10.1590/S0100-69162012000200002

来源: SciELO

【 摘 要 】

The knowledge of the spatial variability of noise levels and the build of kriging maps can help the evaluation of the salubrity of environments occupied by agricultural workers. Therefore, the objective of this research was to characterize the spatial variability of the noise level generated by four agricultural machines, using geostatistics, and to verify if the values are within the limits of human comfort. The evaluated machines were: harvester, chainsaw, brushcutter and tractor. The data were collected at the height of the operator's ear and at different distances. Through the results, it was possible to verify that the use of geostatistics, by kriging technique, made it possible to define areas with different levels for the data collected. With exception of the harvester, all of machines presented noise levels above than 85 dB (A) near to the operator, demanding the use of hearing protection.

【 授权许可】

CC BY   
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