視頻論文：視頻編解碼匯集

1、【中文摘要】隨著電網(wǎng)規(guī)模的日益擴(kuò)大，以及數(shù)字化電網(wǎng)乃至智能化電網(wǎng)建設(shè)的縱深發(fā)展，對(duì)于實(shí)現(xiàn)電網(wǎng)智能化調(diào)度及安全運(yùn)行管理等，視頻圖像已成為必要的技術(shù)支撐和手段。在高度資源共享的前提下,于電網(wǎng)管理的各個(gè)層次（縣級(jí)、地市級(jí)、區(qū)域電網(wǎng)或省級(jí)電網(wǎng)、國(guó)家級(jí)電網(wǎng)）建立視頻監(jiān)控中心，已成為非?，F(xiàn)實(shí)的迫切需求。經(jīng)過(guò)近幾年的建設(shè),各地市級(jí)供電公司在所轄變電站大都安裝了視頻監(jiān)控系統(tǒng)且大部分供電公司也設(shè)置了視頻監(jiān)控中心，基本實(shí)現(xiàn)了對(duì)所轄變電站的遠(yuǎn)程視頻監(jiān)控功能。但是由于各個(gè)變電站使用的視頻監(jiān)控設(shè)備多來(lái)自不同的廠商，而各個(gè)廠商的視頻技術(shù)相對(duì)獨(dú)立，甚至同一廠商不同型號(hào)的設(shè)備都采用不同的編碼格式和控制協(xié)議，因此出現(xiàn)了一個(gè)監(jiān)控

2、中心有多套視頻監(jiān)控系統(tǒng)并存的情況，很難以實(shí)現(xiàn)有效的統(tǒng)一管理。如何這些不同廠商的視頻監(jiān)控系統(tǒng)整合起來(lái)，將不同廠商不同型號(hào)的設(shè)備的視頻圖像匯集到一個(gè)系統(tǒng)，已成為電網(wǎng)管理各個(gè)層次監(jiān)控中心一體化管理面臨的重要問(wèn)題。本系統(tǒng)旨在尋求一種整合不同廠商視頻監(jiān)控系統(tǒng)的方法，在保持現(xiàn)有視頻監(jiān)控系統(tǒng)的基礎(chǔ)之上，提出一種視頻圖像格式統(tǒng)一轉(zhuǎn)換的模型，實(shí)現(xiàn)對(duì)所有視頻圖像的匯集統(tǒng)一和視頻監(jiān)控聯(lián)動(dòng)控制。本系統(tǒng)由編解碼服務(wù)和WEB應(yīng)用服務(wù)兩大主要部分構(gòu)成。編解碼服務(wù)是通過(guò)對(duì)各個(gè)視頻監(jiān)控廠家的SDK進(jìn)行解析,將從監(jiān)控終端設(shè)備獲取的視頻圖像進(jìn)行解碼和編碼統(tǒng)一轉(zhuǎn)換成JPEG格式傳輸；WEB應(yīng)用服務(wù)提供視頻圖像發(fā)布和相關(guān)數(shù)據(jù)的存儲(chǔ)，以

3、及傳輸中可能需要的組播轉(zhuǎn)單播服務(wù)，最終實(shí)現(xiàn)各種視頻技術(shù)匯集統(tǒng)一的系統(tǒng)平臺(tái)。通過(guò)對(duì)所有變電站實(shí)時(shí)視頻和圖像信息的綜合統(tǒng)一管理，為電網(wǎng)現(xiàn)代化安全運(yùn)行管理的提供重要技術(shù)手段，同時(shí)也為電網(wǎng)應(yīng)急指揮系統(tǒng)提供重要技術(shù)支撐?！居⑽恼縒iththeexpandingscaleofpowergridandthedeeplyandfullydevelopmentindigitalpowergridconstructionandevenintelligentpowergridconstruction,videoimagehasbecomeanessentialtechnologicalsupportandapp

4、roachinrealizingpowergridintelligentdispatchandsafeoperationmanagement,etc.Onconditionsofhighlysharedresources,toestablishvideomonitorcentersindifferentmanagementevelsofpowergrid(county-level,city-level,region-levelorprovince-levelandstate-levelpowergrid)hasalreadybecomeapracticalpressingneed.Withse

5、veralyears'ofconstruction,manycity-levelpowersupplycompanieshaveinstalledvideomonitorsystemsinthesubstationswithintheirjurisdiction,andmostofthemhaveestablishedtheirvideomonitorcenters,basicallyrealizedthedistantvideomonitorfunctionsofthesubstationswithintheirjurisdiction.However,forthereasontha

6、tthevideomonitoringequipmentappliedinthosesubstationsaremostlyproducedbydifferentmanufacturers,whomaintainrelativelyindependentvideotechnologiesandevenadoptdifferentencodingformatsandcontrolagreementstoequipmentsproducedbythesamemanufacturerbutwithdifferentmodels,asaresult,severalsetsofvideomonitors

7、ystemsmaycoexistsinonemonitorcenter,whichmadeitdifficulttorealizeefficientanduniformmanagement.Therefore,howtointegratethosevideomonitoringsystemsmadebydifferentmanufacturershasbecomeanessentialissuefacedbyintegrationmanagementofmonitorcentersindifferentlevelsofpowergridmanagement.Thissystemaimstose

8、ekamethodthatcanintegratevideomonitoringsystemsproducedbydifferentmanufacturers,putforwardanunifiedvideoimageformattransfermodelonthebasisofcurrentvideomonitorsystem,andtorealizeunifiedcollectionandcoordinatedcontrolofallvideoimages.ThissystemisconsistedofEncodingandDecodingServiceandWEBkpplicationService.TheEncodingandDecodingServiceaimstoanalyzetheSoftwareDevelopmentKitofeachvideomonitormanufacturers,encodeanddecodethevideoimagescapturedfromthemonitor-endequipme