Analysis and Classification of Noise Sources of Conveyor Systems by Sound Visualizing on the Postal Package Sorting Line

Abstract

Sound visualization tools are now widely used in industry. As a tool, acoustic cameras are also well-suited for faster identification of errors as well as individual states while operating devices. The aim of this paper was to locate and quantify noise sources on a packet sorting line using an acoustic camera and then to propose noise reduction measures. Localization of noise sources was performed by means of an acoustic camera with a microphone ring array. The result of these measurements and analyses was to sort the individual noise sources from less noisy to the noisiest, which gives a good assumption for better planning of spending on the implementation of noise reduction measures. The outputs of these measurements also give information on the character and frequency composition of the sound of individual sources, which will help out in the design of specific noise measures.

Contextual Design of Road Traffic Noise Reducing Devices

“…0, Issue 0, An economically efficient variant is a noise barrier made of recycled plastic. Despite the higher costs, we must consider not only its higher sound absorption [23] but also its environmental durability [24]. A big plus is also the use of secondary materials, where waste plastics are used for production, mainly from municipal waste [22], demolition waste [25] and waste from the automotive industry (recycled rubber products, technical textiles,…).…”

Monitoring of Rubber Belt Material Performance and Damage

“…Even though the number of lethal accidents is decreasing, there are still a large number of failures that could be predicted if monitored properly [8]. Among the large variety of the monitoring devices, the following can be noted: visual systems [9], including laser-based systems [10] and multispectral image acquisition systems [11][12][13], acoustic emission systems [14][15][16][17][18][19], ultrasound detectors [20], thermovisual systems able to detect the elevated temperature of the intensely worn belt surface [21], strain gauge measurement systems [22], and others [23][24][25]. Most of the proposed solutions require the introduction or adaptation of expensive devices and exhibit limited repeatability and accuracy of the measurement.…”

A Preliminary Studies of the Impact of a Conveyor Belt on the Noise Emission

“…The number of noise reduction methods are limited; therefore, developing new solutions is a major engineering challenge [21,22]. Studies have attempted to systematize knowledge about conveyor noise and classify noise sources [23][24][25][26][27]. It is important to consider the conveyor not as a linear noise source, but as a collection of point sources [28].…”