Sustav za Internetom kontrolirani uzgoj riba

scientific master's theses

• Author: Krešimir Petrinec
• Mentor: Zdenko Kovačić (mentor)
• Committee member: Stjepan Bogdan (predsjednik povjerenstva)
• Committee member: Zdenko Kovačić (član povjerenstva)
• Committee member: Zvonimir Kozarić (član povjerenstva)
• Committee member: Mario Žagar (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Control and Computer Engineering); Zagreb
• Defense date and country: 2004-11-30, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering; Automation and Robotics
• Universal decimal classification (UDC): 638/639 - Apiculture. Keeping, breeding and management of insects and other arthropods. Hunting. Fishing. Fish breeding; 004 - Computer science and technology. Computing. Data processing

Abstract

Posljednjih nekoliko desetljeća došlo je do velikog napretka u tehnologiji uzgoja ribe što je rezultiralo smanjenjem cijene i globalnim povećanjem proizvodnje ribe. Nova, napredna tehnologija uzgoja zahtjeva neprestano praćenje kvalitete vode, odnosno, parametara koji su relevantni za rast ribe, a to su ponajprije temperatura vode, pH vrijednost vode i koncentracija kisika otopljenog u vodi. Za razumijevanje ekspertnih sustava ukratko je opisana teorija ekspertnih sustava koja je korištena u okviru ovog magistarskog rada, te je ukratko opisana tehnologija uzgoja slatkovodnih riba i način na koji je predstavljeno znanje o tehnologiji uzgoja u ekspertnom sustavu. U ovom magistarskom radu izrađen je, na temelju postojeće baze znanja vrhunskih eksperata iz područja uzgoja riba, ekspertni sustav čije usluge može koristiti veći broj korisnika u realnom vremenu. On omogućava korisnicima da pomoću razvijene i izvedene programske aplikacije Server promatraju ključne parametre proizvodnog sustava. Za tu svrhu razrađena je cjelovita koncepcija sklopovske i programske podrške. Projektiran je, izrađen i programiran prototip elektroničkog upravljačkog modula – ulazno-izlazne jedinice, koja omogućava upravljanje izvršnim uređajima (aeratorima, automatskim hranilicama) u ribnjaku putem računala. Sustav za Internetom kontrolirani uzgoj riba razvijen je na dva ribogojilišta u Hrvatskoj, na kojima je tijekom višemjesečne eksploatacije sustava ispitano djelovanje sustava na efikasnost proizvodnje direktnom usporedbom s dosadašnjim uhodanim načinom upravljanja proizvodnjom. Rezultati rada ekspertnog sustava pokazali su da se kontroliranom hranidbom mogu postići značajne uštede hrane u odnosu na nekontroliranu hranidbu uz ostvarenje istog prirasta biomase. Također se povećava kvaliteta ribljeg mesa što sve zajedno doprinosi većem profitu ribogojilišta. Zbog optimalnog utroška riblje hrane u ribnjacima, neposredno povezanih s prirodnim vodotocima, smanjuje se i zagađenje vodenih tokova.

Abstract (english)

The technology of fish farming has made great advances in the past decades. These advances have resulted in lower prices and a global increase in fish production. Such new and improved production technology also means that not only water quality, but also other parameters relevant to fish growth, such as water temperature, water pH and oxygen levels need to be monitored consistently. The thesis summarizes the theory behind the type of expert systems used for the project. The technology of freshwater fish farming and the way the technology was used within the expert system is described. The thesis outlines the creation of an expert system based on the expertise of top fish farming specialists. This expert system can be used by a number of users in real time. Moreover, it enables users to observe key parameters of the production system through the program application Server. The execution and development of the application was based on a complete model of hardware and software support. The prototype of an electronic module was designed, built, and programmed. The module consists of a computer-operated input-output unit that enables the control of actuators (aerators and automatic feeders) in the fish farm. The Internet-based System for Supervised Fish Farming was developed on two fish farms in Croatia. The system was used for several months. Its impact on production efficiency was compared directly to the previously used method of production. The results have shown that the use of the expert system to control feeding has significantly reduced the amount of food used, as opposed to unsupervised feeding, while the biomass growth remained the same. The results have also shown an increase in fish meat quality. All these factors have increased the fish farms’ profit. What is more, the optimal use of food in fish ponds directly connected to natural water resources has resulted in the decrease in water pollution.

• Keywords: Ekspertni sustavi; sustavi zasnovani na pravilima; uzgoj riba; hranidba riba; kvaliteta vode; Internet; upravljanje sustavima; mjerni i upravljački uređaji
• Keywords (english): Expert systems; rule-based systems; fish-farming; fish feeding; water quality; Internet; system control; control and measurement devices
• Language: croatian
• URN:NBN: urn:nbn:hr:168:811437
• Study programme: Title: Postgraduate master programme in electrical engineering; Study programme type: university; Study level: postgraduate; Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2019-06-26 08:21:56