Analiza senzorja za merjenje usmerjenosti imisije hrupa v okolju

Kitek, Jernej (avtor), Prezelj, Jurij (mentor)

Zaključna naloga obravnava delovanje merilnega sistema za detekcijo smeri vira hrupa v zunanjem urbanem okolju, opisuje dognanja ob uporabi merilnega sistema, izvlečke in zaključke teh meritev. Obsega meritev usmerjenosti merilnega sistema v različnih frekvenčnih območjih pod nadzorovanimi pogoji v okolju gluhe sobe. Namen naloge je bil ugotoviti, kako merilni sistem deluje v prostem zvočnem polju v okolju, s točkovnimi zvočnimi viri, in s kakšno ločljivostjo zaznava točkovne vire z namenom prikaza izmerjenih informacij v lažje razumljive oblike, ki se jih nato lahko primerja z ročnimi meritvami na standardiziranem merilniku. Naloga torej analizira možnost avtomatizacije meritev hrupa v okolju na osnovi prostorskega filtriranje zvočnih virov. Merilni sistem je bil postavljen na skrbno izbrana merilna mesta, kjer so potekale meritve različnih virov hrupa z namenom določanja njihove smeri in vpliva na rezultate merjenja dominantnega merjenega izvora hrupa, ter njihov učinek na obnašanje sistema. Po opravljenih meritvah je bilo ugotovljeno, da sistem nudi učinkovito in natančno določanje in ločevanje izvorov hrupa ozadja od hrupa merjenega vira. Z meritvami smo potrdili zasnovo merilnega sistema, ki omogoča hitro in preprosto obdelavo podatkov in njihovo vizualno predstavitev na razumljiv način.

• Jezik: Slovenski jezik
• Ključne besede: zvok, hrup, okolje, lokalizacija zvočnega izvora, avtomatizacija
• Vrsta gradiva: Diplomsko delo/naloga
• Organizacija: FS - Fakulteta za strojništvo
• Leto izida: 2018
• PID: 20.500.12556/RUL-105381
• Datum objave v RUL: 23.11.2018

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: Analysis of the sensor for measuring the direction of noise imissions in the enviroment

Izvleček

This bachelor’s thesis contains the analysis and results of the system for automatic measurement of noise source direction in the external urban surroundings, describing the findings using the measurement system, the extracts, and the conclusions of these measurements. It involves measuring the direction of the system in different frequency ranges under the controlled conditions in an anechoic chamber. The purpose of the thesis was to observe how the system operates in a free sound field with multiple directed noise sources and the resolution with which it detects those sources, with the intent to convey the gathered information into a more understandable form that can then be compared with manual measurements on a standardized meter. The task, therefore, analyzes the possibility of automating the measurement of noise in the environment based on spatial filtering of sound sources. Therefore, the system was set together with a control computing unit in a carefully selected area where measurements of different noise sources were carried out in order to determine their direction and the impact they have on the main observed source as well as the influence of multiple sources on the behavior of the system. After the measurements, it was determined that the system offers effective and precise determination and separation of the effects of the measured sources. It can also process and present the gathered information in an easily comprehensible way.

• Ključne besede: sound, noise, environment, sound source localization, automation