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1、第38卷第3期煤炭學(xué)報(bào)Vol.38No.32013年3月JOURNALOFCHINACOALSOCIETYMar.2013文章編號(hào):0253-9993(2013)03-0522-07煤礦井下基于RSSI的加權(quán)質(zhì)心定位算法1,2111韓東升,楊維,劉洋,張玉(1．北京交通大學(xué)電子信息工程學(xué)院,北京100044;2．華北電力大學(xué)電氣與電子工程學(xué)院,河北保定071003)摘要:針對(duì)基于無(wú)線傳感器網(wǎng)絡(luò)的礦井災(zāi)害無(wú)線監(jiān)測(cè)信息系統(tǒng),提出了一種基于接收信號(hào)強(qiáng)度(RSSI)的加權(quán)質(zhì)心定位算法。算法首先動(dòng)態(tài)獲取路徑衰落指數(shù),然后通過(guò)加權(quán)質(zhì)心算法計(jì)算出
2、自身位置。動(dòng)態(tài)獲取路徑衰落指數(shù)實(shí)時(shí)計(jì)算了定位區(qū)域下的路徑損耗指數(shù),能夠準(zhǔn)確反映巷道不同區(qū)域?qū)π盘?hào)衰落的影響,增強(qiáng)了測(cè)距算法對(duì)環(huán)境的適應(yīng)能力。加權(quán)質(zhì)心算法通過(guò)加權(quán)系數(shù)體現(xiàn)各參考節(jié)點(diǎn)對(duì)質(zhì)心坐標(biāo)決定權(quán)的大小,提高了定位精度。實(shí)驗(yàn)測(cè)試表明,算法提高了定位精度,計(jì)算量小,定位流程簡(jiǎn)單,適合用于煤礦井下環(huán)境。關(guān)鍵詞:加權(quán)質(zhì)心算法;接收信號(hào)強(qiáng)度;煤礦井下;人員定位;無(wú)線傳感器網(wǎng)絡(luò)中圖分類號(hào):TD676文獻(xiàn)標(biāo)志碼:AAweightedcentroidlocalizationalgorithmbasedonreceivedsignalstrength
3、indicatorforundergroundcoalmine1,2111HANDong-sheng,YANGWei,LIUYang,ZHANGYu(1．SchoolofElectronicandInformationEngineering,BeijingJiaotongUniversity,Beijing100044,China;2．SchoolofElectricalandElectronicEngineering,NorthChinaElectricPowerUniversity,Baoding071003,China)Abs
4、tract:Aweightedcentroidlocalizationalgorithmbasedonreceivedsignalstrengthindicator(RSSI)wasproposedforundergroundminedisastermonitoringsystemwhichbasedonwirelesssensornetwork(WSN).Itfirstlyaccessedtothepathofdeclineindexdynamically,andthencalculateditsownlocationbyweig
5、htedcentroidalgorithm.Whenitac-cessedtothepathofdeclineindexdynamically,pathlossexponentwascalculatedinlocationareaswhichaccuratelyreflectstheaffectofthesignalfadingindifferenttunnelareasandenhancesadaptivecapacitytotheenvironmentofdistancedetectionalgorithm.Weightedce
6、ntroidalgorithmembodiestheimpactofeachreferencenodetothecentroidcoordinatebyweightedcoefficients,whichimprovestheaccuracyofpersonnellocalization.Theexperimentalresultsshowthattheproposedalgorithmachievesbetterpositioningaccuracywithsimplecalculationandprocess,whichdem-
7、onstratesitissuitableforcoalmineenvironment.Keywords:weightedcentroidalgorithm;receivedsignalstrengthindication;undergroundcoalmine;personnelloca-tion;wirelesssensornetwork煤礦井下工況環(huán)境十分復(fù)雜,有線監(jiān)控系統(tǒng)由于通信方式,建立礦井災(zāi)害無(wú)線監(jiān)測(cè)信息系統(tǒng)可以對(duì)有自身的局限性難以對(duì)火災(zāi)、溫度、風(fēng)速、地壓、瓦斯、煤線監(jiān)控系統(tǒng)難以監(jiān)測(cè)的區(qū)域?qū)嵤┯行?、?shí)時(shí)和靈活的塵、礦塵等
8、對(duì)礦井安全生產(chǎn)具有重要影響的礦井環(huán)境監(jiān)測(cè)。無(wú)線傳感器網(wǎng)絡(luò)布點(diǎn)靈活,可根據(jù)煤礦井下實(shí)參數(shù)實(shí)施全面、有效的監(jiān)測(cè),而且有線監(jiān)控系統(tǒng)難以際情況布置、更換和增加監(jiān)測(cè)點(diǎn),能夠?qū)崿F(xiàn)對(duì)井下區(qū)監(jiān)測(cè)到的區(qū)域往往是安全隱患最為突出的地方,這樣域的全覆蓋,彌
