Spatial variability characterization of acoustic discomfort and zone of admissible noise caused by micro-tractor

Q3 Agricultural and Biological Sciences Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-05-01 DOI:10.15446/rfnam.v75n2.96242

Fabiano Battermarco da Silva Martins, Gabriel Araújo e Silva Ferraz, João Paulo Barreto Cunha, Diego Bedin Marin, Luana Mendes do Santos, Lucas Santos Santana

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Abstract

Agricultural development requires greater adoption of machinery by producers to avoid damage to the worker’s health due to excessive noise. In this scenario, this study aimed to analyze the noise magnitude emitted by a micro-tractor using geostatistics and Statistical Process Control (SPC) in mapping spatial variability to identify healthy zones for workers. The study was carried out at the Federal University of Lavras (UFLA), where noise levels were collected at points distributed in a regular 2.0×2.0 m sample grid around the machine. The spatial dependence of noise was analyzed by adjusting the wave-type semivariogram and interpolating by ordinary kriging and the SPC through individual control charts. It was possible to observe alarming noise values above 85 dB(A) in a radius of up to 6 m around the tractor in operation. The maximum value of 91 dB(A) was obtained from the operator’s seat, thus allowing maximum daily exposure of 3.5 h. In addition, it was observed that people located at distances greater than 4 m from the micro-tractor do not need to wear personal protective equipment for an exposure of 8 h of work.

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微型拖拉机声不适及可接受噪声带的空间变异性特征

农业发展要求生产者更多地采用机械，以避免因噪音过大而损害工人的健康。在这种情况下，本研究旨在利用地质统计学和统计过程控制(SPC)来绘制空间变异图，分析微型拖拉机发出的噪声强度，以确定工人的健康区域。这项研究是在拉夫拉斯联邦大学(UFLA)进行的，在那里，噪音水平被收集在机器周围一个规则的2.0×2.0 m样本网格中分布的点上。通过调整波动型半变异函数，用普通克里格插值法和SPC法对单个控制图进行插值，分析了噪声的空间依赖性。在运行中的拖拉机周围6米范围内，可以观察到超过85 dB(A)的警报噪声值。最大值91 dB(A)来自操作人员的座位，因此允许最大每日暴露3.5小时。此外，观察到距离微型拖拉机大于4米的人在工作8小时时不需要佩戴个人防护设备。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Revista Facultad Nacional de Agronomia Medellin Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： La Revista Facultad Nacional de Agronomía Medellín (RFNA), de la Universidad Nacional de Colombia, Sede Medellín, Facultad de Ciencias Agrarias, es una publicación científica editada desde el año 1939, en formato impreso y digital y de acceso abierto desde la web —sin costo para autores y lectores—. Está orientada a investigadores que crean conocimiento disciplinar y multidisciplinar que articula la ciencia y la tecnología para hacer más productivo el campo a nivel empresarial y de economía campesina. La Revista tiene como objetivo divulgar resultados de investigación mediante artículos originales, inéditos y arbitrados (peer review) de carácter científico que respondan a preguntas específicas y que proporcionen sustento y pruebas a una hipótesis, en aspectos relacionados con las Ciencias Agronómicas, Producción animal, Ciencias Forestales, Ingeniería Agrícola, de Alimentos y otras afines que contribuyan a la solución de los limitantes del agro a nivel nacional, regional e internacional. La Revista recibe y publica, sin ningún costo, artículos en idioma inglés de investigación, revisión, reseñas y cartas al editor. Desde el 2017 la periodicidad de publicación es cuatrimestral, se publican tres números al año con circulación nacional e internacional, en los siguientes períodos: Enero - Abril Mayo - Agosto Septiembre - Diciembre This journal does not charge APCs or submission charges.