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The WSN is employed with some sensor devices that sense and gather ambient context information which is transmitted to computation model. LEDs get power supply from photovoltaic solar panel systems that have inbuilt battery banks. Fuzzy rough set is a simplification of a rough set, obtained from the normalization of fuzzy set in a approximation of crisp value. Fuzzy is utilized for analyzing the energy consumed in the system additionally. Performance evaluation of proposed Auto-intelligent LED system is carried out based on the comparative analysis of energy consumption of ac-grid system with solar energy based dc-grid system. Result analysis shows that proposed system saves 78% of energy consumption as compared to the traditional AC power grid system. The proposed DC power grid system presents 3% of voltage drop and maximum power loss of 1.25%. The statistics of battery charger and LED drives are also represented experimentally.<\/jats:p>","DOI":"10.3233\/jifs-189640","type":"journal-article","created":{"date-parts":[[2021,1,8]],"date-time":"2021-01-08T13:45:42Z","timestamp":1610113542000},"page":"8173-8183","source":"Crossref","is-referenced-by-count":6,"title":["Fuzzy rough set based sustainable methods for energy efficient smart city development"],"prefix":"10.1177","volume":"40","author":[{"given":"Xi","family":"Wang","sequence":"first","affiliation":[{"name":"The Post-Doctoral Workstation for Theoretical Economics, Shenzhen University, Shenzhen, PR China"},{"name":"Qianhai Institute for Innovative Research, Shenzhen, PR China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qinyi","family":"Chen","sequence":"additional","affiliation":[{"name":"Medical Engineering Department, Chongqing Medical and Pharmaceutical College, Chongqing, 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