Noise Analysis at Different Technological Solutions of Milking Devices

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F18%3A43897787" target="_blank" >RIV/60076658:12220/18:43897787 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.13031/aea.12717" target="_blank" >http://dx.doi.org/10.13031/aea.12717</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13031/aea.12717" target="_blank" >10.13031/aea.12717</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Noise Analysis at Different Technological Solutions of Milking Devices

Popis výsledku v původním jazyce

The aim of this article is to evaluate the noise levels of different milking systems. Noise was measured at 15 dairy farms in Slovakia, Finland, and the Czech Republic. Out of these, there were three herringbone, three tandem, three side-by-side, and three rotary milking parlors, and three automatic milking systems (AMS). Brüel&amp;Kjær type 2270 sound ana-lyser was used for measuring noise levels. Equivalent sound pressure level (LAeq), maximum sound pressure level (LAFmax), and peak values (LCPk) have been recorded in each milking system during the entire herd milking session. The average equivalent sound pressure level has been recorded in the group of evaluated rotary parlors on the level of 69.5 dB. In side-by-side parlors LAeq was 66.0 dB, in herringbone parlors 65.8 dB, in tandem parlors 63.7 dB, in the group of automatic milking systems it was only 60.7 dB on average. Similar tendencies were also observed in averages of maximum sound pressure levels (the highest in the group of evaluated rotary parlors – 90.1 dB and the lowest in AMS – 72.3 dB) and in averages of peak values (99.5 dB for rotary parlors and 87.1 for AMS). The highest sound levels were observed in rotary milking parlor with 72 milking places (average of LAeq = 71.8 dB, LAFmax= 91.8 dB and LCpk= 109.3 dB). Significant differ-ences were identified on the level of P≤0.05 between the two loudest rotary milking parlors and five quietest milking devices (all three AMS, one tandem, and one side-by-side in LAFmax; and only three AMS in LCpk) and between the group of rotary parlors and the group of AMS. Permanent exposure to noise, ranging from 85 to 95 dB, was not observed in any of the evaluated milking devices. However, 58% of LAFmax measured values exceeded 85 dB in several milking systems; furthermore, one tandem parlor, one herringbone, two side by side and two rotary milking parlors have shown that more than 90% of LAFmax measured values exceeded 85 dB and more than 70% exceeded 90 dB. In rotary milking parlor with 72 milking units, more than 27.2% of all cases of LCpk measured values were higher than 110 dB. Although significant differences between types and sizes of milking equipment have not been documented, in all cases results showed that larger parlors are noisier; and could negatively influence animals as well as personnel. Manufactures should thus take this into consideration in process of milking machines design and production.

Název v anglickém jazyce

Noise Analysis at Different Technological Solutions of Milking Devices

Popis výsledku anglicky

The aim of this article is to evaluate the noise levels of different milking systems. Noise was measured at 15 dairy farms in Slovakia, Finland, and the Czech Republic. Out of these, there were three herringbone, three tandem, three side-by-side, and three rotary milking parlors, and three automatic milking systems (AMS). Brüel&amp;Kjær type 2270 sound ana-lyser was used for measuring noise levels. Equivalent sound pressure level (LAeq), maximum sound pressure level (LAFmax), and peak values (LCPk) have been recorded in each milking system during the entire herd milking session. The average equivalent sound pressure level has been recorded in the group of evaluated rotary parlors on the level of 69.5 dB. In side-by-side parlors LAeq was 66.0 dB, in herringbone parlors 65.8 dB, in tandem parlors 63.7 dB, in the group of automatic milking systems it was only 60.7 dB on average. Similar tendencies were also observed in averages of maximum sound pressure levels (the highest in the group of evaluated rotary parlors – 90.1 dB and the lowest in AMS – 72.3 dB) and in averages of peak values (99.5 dB for rotary parlors and 87.1 for AMS). The highest sound levels were observed in rotary milking parlor with 72 milking places (average of LAeq = 71.8 dB, LAFmax= 91.8 dB and LCpk= 109.3 dB). Significant differ-ences were identified on the level of P≤0.05 between the two loudest rotary milking parlors and five quietest milking devices (all three AMS, one tandem, and one side-by-side in LAFmax; and only three AMS in LCpk) and between the group of rotary parlors and the group of AMS. Permanent exposure to noise, ranging from 85 to 95 dB, was not observed in any of the evaluated milking devices. However, 58% of LAFmax measured values exceeded 85 dB in several milking systems; furthermore, one tandem parlor, one herringbone, two side by side and two rotary milking parlors have shown that more than 90% of LAFmax measured values exceeded 85 dB and more than 70% exceeded 90 dB. In rotary milking parlor with 72 milking units, more than 27.2% of all cases of LCpk measured values were higher than 110 dB. Although significant differences between types and sizes of milking equipment have not been documented, in all cases results showed that larger parlors are noisier; and could negatively influence animals as well as personnel. Manufactures should thus take this into consideration in process of milking machines design and production.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40101 - Agriculture

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied engineering in agriculture

ISSN

0883-8542

e-ISSN

—

Svazek periodika

34

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

921-927

Kód UT WoS článku

000454981900004

EID výsledku v databázi Scopus

2-s2.0-85060015516