prikaz prve stranice dokumenta SUSTAV ZA AUTOMATSKO OČITAVANJE VODOMJERA
Access restricted to students and staff of home institution
master's thesis
SUSTAV ZA AUTOMATSKO OČITAVANJE VODOMJERA
2017. urn:nbn:hr:190:044793
Slukić, Vedran
University of Rijeka
Faculty of Engineering

Cite this document

Slukić, V. (2017). SUSTAV ZA AUTOMATSKO OČITAVANJE VODOMJERA (Master's thesis). Rijeka: University of Rijeka, Faculty of Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:190:044793

Slukić, Vedran. "SUSTAV ZA AUTOMATSKO OČITAVANJE VODOMJERA." Master's thesis, University of Rijeka, Faculty of Engineering, 2017. https://urn.nsk.hr/urn:nbn:hr:190:044793

Slukić, Vedran. "SUSTAV ZA AUTOMATSKO OČITAVANJE VODOMJERA." Master's thesis, University of Rijeka, Faculty of Engineering, 2017. https://urn.nsk.hr/urn:nbn:hr:190:044793

Slukić, V. (2017). 'SUSTAV ZA AUTOMATSKO OČITAVANJE VODOMJERA', Master's thesis, University of Rijeka, Faculty of Engineering, accessed 16 March 2025, https://urn.nsk.hr/urn:nbn:hr:190:044793

Slukić V. SUSTAV ZA AUTOMATSKO OČITAVANJE VODOMJERA [Master's thesis]. Rijeka: University of Rijeka, Faculty of Engineering; 2017 [cited 2025 March 16] Available at: https://urn.nsk.hr/urn:nbn:hr:190:044793

V. Slukić, "SUSTAV ZA AUTOMATSKO OČITAVANJE VODOMJERA", Master's thesis, University of Rijeka, Faculty of Engineering, Rijeka, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:190:044793

Please login to the repository to save this object to your list.
Metadata
TitleSUSTAV ZA AUTOMATSKO OČITAVANJE VODOMJERA
AuthorVedran Slukić
MentorJonatan Lerga (mentor)
Committee memberNino Stojković (predsjednik povjerenstva)
GranterUniversity of Rijeka
Faculty of Engineering
Rijeka
Defense date and country2017-09, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Abstract
Tema ovog rada je realizacija sustava za automatsko očitanje vodomjera. Ugradbeni sustav je dizajniran na PIC32 platformi, te je osmišljen da pomoću CMOS VGA kamere uzima sliku i prepoznaje brojeve na slici. Za prepoznavanje brojeva na slici implementiran je jednostavni OCR algoritam. Implementirani OCR algoritam funkcionira tako da se dio slike gdje se nalazi znamenka podijeli na 6 dijelova, unutar tih dijelova program radi histogram aktivnih piksela. Histogrami se zatim uspoređuju s... More histogramima preddefiniranih znamenaka. Ona znamenka koja iz preddefiniranog seta ima najmanju grešku prilikom usporedbe uzima se kao prepoznata znamenka. Uštede električne energije postižu se na način da se sve procesorski zahtjevne operacije izvršavaju na višem radnom taktu, a sve ostale na nižem radnom taktu. Dodatne uštede podatkovnog prometa i energije postižu se time što sustav šalje samo znamenke, a ne cijelu sliku. Less
Abstract (english)
Topic of this thesis is development of system for automatic watermeter reading. Embedded system is designed on PIC32 platform and it communicates with CMOS VGA chip to retrive a picture of watermeter reading. From that picture it recognise numbers by applying simple OCR algorithm and sends reading thru RS485 communication interface. OCR algorithm takes part of picture where character is located, and divide it to six areas. From this six areas histogram of active pixels is calculated... More and compared with set of predefined ones. Result of comparsion is set of ten statistical values which are sorted in descending order. The smallest value has the highest statistical certainty and this character is considered as OCR result. To fulfil low power system requirement, code is designed in such manner that all CPU extensive work is done on high working frequency and all other on low frequency.Clock switchin is done by using prescalers, postscalers and PLL. GSM carrier cost savings are achieved by reducing data traffic. Data traffic has smaller amount because system does not sending whole picture to server, it sends just few bytes of OCR characters. Less
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:190:044793
Study programmeTitle: Electrical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike (magistar/magistra inženjer/inženjerka elektrotehnike)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2017-10-18 08:48:32
accessibility

closeAccessibilityrefresh

If you wish to permanently save changes, click on Save, if not - your settings will be reset when you restart the browser.