資源描述:
《基于非視距鑒別的井下精確定位技術(shù)研究》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在工程資料-天天文庫(kù)。
1、第44卷第7期煤炭科學(xué)技術(shù)Vol.44No.72016年7月CoalScienceandTechnologyJuly2016基于非視距鑒別的井下精確定位技術(shù)研究1,2,3溫良(1?煤炭科學(xué)技術(shù)研究院有限公司,北京100013;2?煤炭資源高效開(kāi)采與潔凈利用國(guó)家重點(diǎn)實(shí)驗(yàn)室,北京100013;3?北京市煤礦安全工程技術(shù)研究中心,北京100013)摘要:針對(duì)煤礦井下動(dòng)目標(biāo)精確定位系統(tǒng)定位精度低且受非視距條件限制嚴(yán)重的問(wèn)題,研究信號(hào)飛行時(shí)間TOF和信號(hào)接收強(qiáng)度指示RSSI定位算法的特點(diǎn)及其技術(shù)局限性,提出利用已知的錨節(jié)點(diǎn)之間的距離,通過(guò)TOF和RSSI方法分別得到2組盲節(jié)
2、點(diǎn)到2個(gè)錨節(jié)點(diǎn)的距離比公式的方法,并根據(jù)時(shí)間差和接收信號(hào)強(qiáng)度差分別進(jìn)行測(cè)距運(yùn)算,以提高定位精度;研究TOF算法和RSSI算法對(duì)非視距條件的敏感性,發(fā)現(xiàn)RSSI算法對(duì)非視距條件的敏感性明顯高于TOF方法,并以此作為鑒別非視距條件的依據(jù),通過(guò)仿真和試驗(yàn)方法表明,該方法可以得到小于5m的精確定位誤差。關(guān)鍵詞:精確定位;煤礦井下;TOF定位算法;RSSI算法;非視距鑒別中圖分類(lèi)號(hào):TD655文獻(xiàn)標(biāo)志碼:A文章編號(hào):0253-2336(2016)07-0109-07Studyonaccuratepositioningtechnologyinundergroundmineba
3、sedonnonlineofsightdistinguishment1,2,3WenLiang(1?ChinaCoalResearchInstituteCompanyLimited,Beijing100013,China;2?StateKeyLaboratoryofCoalMiningandCleanUtilization,Beijing100013,China;3?BeijingResearchCenterofMineSafetyEngineeringandTechnology,Beijing100013,China)Abstract:Accordingtoth
4、elowpositioningaccuracyofthemovingobjectsintheundergroundmineandseriouslimitedproblembythenonlineofsightcondition,thepaperhadastudyonthefeaturesandtechnicallimitationsoftheTOFandRSSIpositioningalgorithms.Thepa?perprovidedthattwogroupofformulaofratioofdistancebetweentheblindnodeandtwoa
5、nchornodescouldbeobtainedbyusingTOFandRSSImethods,withtheapplicationofthecertaindistancebetweentheboltingnodes.Accordingtotheparametersofthetimedifferenceandreceivedsignalstrengthdifference,thecalculationofthedistancemeasurementcouldbeindividuallyconductedinordertoimprovethepositionin
6、gaccuracy.ThepaperhadstudyonthesensitivityoftheTOFandRSSIalgorithmstotheconditionofthenonlineofsightandob?tainedthatthesensitivityofRSSIalgorithmtononlineofsightconditionwasobviouslyhigherthanthatofTOFmethod,whichcouldbethebasisfordistinguishingthenonlineofsightcondition.Simulationand
7、experimenthavebeenconductedandresultsindicatedthattheaccu?ratepositioningerrorcouldbelessthanfivemeters.Keywords:accuratepositioning;undergroundmine;TOFlocationalgorithm;RSSIalgorithm;nonlineofsightdistinguishment確定位系統(tǒng)可以獲得盲節(jié)點(diǎn)到錨節(jié)點(diǎn)的距離,其0引言相對(duì)于不具備測(cè)距功能的區(qū)域定位系統(tǒng),效率更煤礦動(dòng)目標(biāo)位置監(jiān)測(cè)系統(tǒng)能夠?qū)崟r(shí)感知井下高,實(shí)用性更強(qiáng)。
8、但由于井下