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藍(lán)牙連接模式對室內(nèi)定位性能的影響
2021年電子技術(shù)應(yīng)用第7期
李 芳1,徐光明2,,劉 成3,相恒永4,,施滸立1,,江 娟5,寧永科6,,錢小龍6
1.中國科學(xué)院國家天文臺,,北京100012;2.太原衛(wèi)星發(fā)射中心,,山西 太原030000,; 3.北京跟蹤與通信技術(shù)研究所,北京100094,;4.中國科學(xué)院微電子研究所,,北京100029; 5.北京空間技術(shù)信息研究所,,北京100094,;6.桂林電子科技大學(xué) 信息與通信學(xué)院,廣西 桂林541004
摘要: 基于低功耗藍(lán)牙(BLE)接收信號強(qiáng)度標(biāo)識(RSSI)測量的位置指紋定位是最常見和有效的室內(nèi)定位方法之一,。然而,,BLE通信協(xié)議并非專門為定位而設(shè)計,不同通信連接方式下的藍(lán)牙設(shè)備測距性能差異較大,顯著影響著定位精度,。針對這一問題,,對不同連接模式下的BLE設(shè)備RSSI測距性能進(jìn)行了測試和分析;進(jìn)一步地,,利用自行搭建的室內(nèi)定位環(huán)境開展實驗,,驗證了其對用戶實際定位精度的影響。測試結(jié)果表明,,當(dāng)BLE模塊設(shè)置為“不可連接模式”時,,設(shè)備RSSI測距穩(wěn)定性提高了約60%、用戶在線定位精度由1.40 m提高到了0.58 m,,能夠獲得明顯更優(yōu)的性能,,是室內(nèi)BLE定位系統(tǒng)的優(yōu)選通信連接方式。
中圖分類號: TN926
文獻(xiàn)標(biāo)識碼: A
DOI:10.16157/j.issn.0258-7998.211292
中文引用格式: 李芳,,徐光明,,劉成,等. 藍(lán)牙連接模式對室內(nèi)定位性能的影響[J].電子技術(shù)應(yīng)用,,2021,,47(7):125-129.
英文引用格式: Li Fang,Xu Guangming,,Liu Cheng,,et al. Influence of BLE connection mode on indoor positioning performance[J]. Application of Electronic Technique,2021,,47(7):125-129.
Influence of BLE connection mode on indoor positioning performance
Li Fang1,,Xu Guangming2,Liu Cheng3,,Xiang Hengyong4,,Shi Huli1,Jiang Juan5,,Ning Yongke6,,Qian Xiaolong6
1.National Astronomical Observation,Chinese Academy of Sciences,,Beijing 100012,,China; 2.Taiyuan Satellite Launch Center,,Taiyuan 030000,,China; 3.Beijing Institute of Tracking and Telecommunication Technology,,Beijing 100094,,China,; 4.Institute of Microelectronics of Chinese Academy of Sciences,Beijing 100029,,China,; 5.Beijing Institute of Space Science and Technology Information,Beijing 100094,,China,; 6.School of Information and Communication,Guilin University of Electronic Technology,,Guilin 541004,,China
Abstract: Fingerprinting location based on received signal strength indication(RSSI) of Bluetooth low energy(BLE) is one of the most popular and effective indoor positioning methods. However, the BLE communication protocol is not specifically designed for location, and the ranging performance of the Bluetooth devices under different communication connection modes varies greatly, which significantly affects the positioning accuracy. In response to this problem, the paper tests and analyzes the BLE RSSI ranging performance under different connection modes. Further, experiments based on a self-built indoor positioning environment are carried out to verify its impact on the user′s actual positioning accuracy. The test results show that when the BLE module is set to "un-connectable mode", the RSSI ranging stability of the device is improved by about 60%, and the user′s online positioning accuracy is improved from 1.40 m to 0.58 m, which significantly improve the positioning performance.
Key words : indoor positioning;Bluetooth low energy(BLE),;received signal strength indication(RSSI),;fingerprinting;weight K-nearest neighbor(WKNN)

0 引言

    隨著物聯(lián)網(wǎng)和位置大數(shù)據(jù)時代的來臨,,室內(nèi)定位技術(shù)受到廣泛研究和重點關(guān)注,,室內(nèi)位置服務(wù)(Location Based Service,LBS)產(chǎn)業(yè)也已迅速規(guī)?;砷L,。距統(tǒng)計,都市人群80%以上的時間在室內(nèi)環(huán)境中度過,。室內(nèi)LBS可為消費(fèi)者提供商場導(dǎo)購,、停車場泊車/尋車、防走失,、社交交友,、展廳/景區(qū)自主導(dǎo)游等服務(wù),為企業(yè)提供人流監(jiān)控分析,、智慧倉儲物流、智能制造,、人員資產(chǎn)管理等應(yīng)用,,打破線下人與物的邊界,是實現(xiàn)萬物互聯(lián)的基礎(chǔ),。此外,,大量的位置數(shù)據(jù)得以產(chǎn)生和積累,通過數(shù)據(jù)的挖掘和分析,,將促進(jìn)行業(yè)效率提升與轉(zhuǎn)型,,并帶動新型產(chǎn)業(yè)生成[1-2]




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作者信息:

李  芳1,,徐光明2,劉  成3,相恒永4,,施滸立1,,江  娟5,寧永科6,,錢小龍6

(1.中國科學(xué)院國家天文臺,,北京100012;2.太原衛(wèi)星發(fā)射中心,,山西 太原030000,;

3.北京跟蹤與通信技術(shù)研究所,北京100094,;4.中國科學(xué)院微電子研究所,,北京100029;

5.北京空間技術(shù)信息研究所,,北京100094,;6.桂林電子科技大學(xué) 信息與通信學(xué)院,廣西 桂林541004)




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