一種基于LoRa的動態(tài)識別和樓層判定方法
2021年電子技術應用第8期
韓一石,,曾祥威,李 賢,,陳佳瀚,,洪遠霖
廣東工業(yè)大學 信息工程學院,廣東 廣州510006
摘要: 針對室內(nèi)三維定位中垂直方向的樓層判定算法復雜度高,、準確率低等問題,,提出一種基于LoRa的動態(tài)識別和樓層判定方法。首先,在樓宇內(nèi)按需部署縱向定位設備,;然后,,建立室內(nèi)各層樓梯口的LoRa信號指紋庫,劃定對應不同樓層信號強度特征的判定閾值,;最后結合LoRa-RSSI動態(tài)識別和樓層判定方法,,捕捉室內(nèi)動態(tài)下無線信號強度的實時變化,實現(xiàn)上下樓活動動態(tài)識別,,提高樓層判定的準確率,。實驗結果表明,方法識別判定準確率達97.9%,,實現(xiàn)簡單,,不受外界環(huán)境影響,可快速按需部署,。結合室內(nèi)二維定位技術,,提供了一種新的室內(nèi)人、物三維定位方法和思路,。
中圖分類號: TN99
文獻標識碼: A
DOI:10.16157/j.issn.0258-7998.211349
中文引用格式: 韓一石,,曾祥威,李賢,,等. 一種基于LoRa的動態(tài)識別和樓層判定方法[J].電子技術應用,,2021,47(8):81-86.
英文引用格式: Han Yishi,,Zeng Xiangwei,,Li Xian,et al. A dynamic identification and floor determination method based on LoRa[J]. Application of Electronic Technique,,2021,,47(8):81-86.
文獻標識碼: A
DOI:10.16157/j.issn.0258-7998.211349
中文引用格式: 韓一石,,曾祥威,李賢,,等. 一種基于LoRa的動態(tài)識別和樓層判定方法[J].電子技術應用,,2021,47(8):81-86.
英文引用格式: Han Yishi,,Zeng Xiangwei,,Li Xian,et al. A dynamic identification and floor determination method based on LoRa[J]. Application of Electronic Technique,,2021,,47(8):81-86.
A dynamic identification and floor determination method based on LoRa
Han Yishi,Zeng Xiangwei,,Li Xian,,Chen Jiahan,Hong Yuanlin
School of Information Engineering,Guangdong University of Technology,,Guangzhou 510006,,China
Abstract: Aiming at the problems of high complexity and low accuracy of vertical floor determination algorithm in indoor three-dimensional positioning, this paper proposes a dynamic identification and floor determination method based on LoRa.First of all, this article on-demand deploys vertical positioning equipment within the building.And then, it sets up the indoor stairs LoRa signals in each layer fingerprint and draws corresponding to the different characteristics of signal strength floor for determining threshold. Finally, by combining with LoRa-RSSI dynamic identification and determination methods, it captures real-time change of indoor wireless signal strength in dynamic condition, achieves dynamic identification of up and down the stairs,,and enhances the accuracy in floor to judge.The experimental results show that the recognition accuracy of this method reaches 97.9%,and it is simple to implement and less affected by the external environment , which could be deployed quickly on demand.Combined with the indoor two-dimensional positioning technology, this method provides a new method and idea for indoor three-dimensional positioning of people and objects.
Key words : floor determination,;dynamic identification;LoRa,;RSSI,;rapid deployment
0 引言
針對室內(nèi)定位技術研究,近年來中外學者提出了多種定位方法,,例如基于ZigBee,、超聲波、紅外線,、RFID,、藍牙,、無線局域網(wǎng),、超寬帶(Ultra-Wideband,UWB),、可見光通信,、計算機視覺、地磁等技術研究,,這些定位算法普遍聚焦于二維平面的定位[1-3],,對三維樓層識別的關注度相對較少[4],難以應對當前建筑環(huán)境下室內(nèi)三維定位需求,。精準的樓層識別可以減少空間搜索域并提高本地化準確性,,在緊急情況下,準確的樓層信息對救援人員至關重要,,可提供有效的緊急服務,。
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作者信息:
韓一石,,曾祥威,,李 賢,陳佳瀚,,洪遠霖
(廣東工業(yè)大學 信息工程學院,,廣東 廣州510006)
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