【摘要】：為了解決傳統(tǒng)圖書借閱形式帶來的諸多不便,運用ZigBee技術(shù)構(gòu)建了圖書檢索導(dǎo)航系統(tǒng)。將圖書館內(nèi)放置無線定位節(jié)點作為參考節(jié)點,內(nèi)置有ZigBee定位模塊的手持終端作為盲節(jié)點,來構(gòu)建一個ZigBee無線定位網(wǎng)絡(luò),在定位網(wǎng)絡(luò)中計算出的盲節(jié)點坐標(biāo)即為讀者的位置。根據(jù)系統(tǒng)需求,從硬件和軟件兩方面設(shè)計了系統(tǒng)的各個模塊,提出了一種改進的加權(quán)質(zhì)心算法,用于手持終端的定位。通過Matlab對改進的加權(quán)質(zhì)心算法進行了仿真實驗,結(jié)果表明:改進的加權(quán)質(zhì)心算法比質(zhì)心算法、PDR-WCL算法精度更高,定位誤差在1m以內(nèi)。
[Abstract]:In order to solve the inconvenience caused by the traditional book borrowing form, a book retrieval navigation system is constructed by using ZigBee technology. The wireless location node is used as the reference node in the library and the handheld terminal with the ZigBee positioning module is used as the blind node to construct a ZigBee wireless location network. The coordinates of the blind node calculated in the location network are the reader's position. According to the requirement of the system, each module of the system is designed from both hardware and software, and an improved weighted centroid algorithm is proposed to locate the handheld terminal. The simulation results of the improved weighted centroid algorithm by Matlab show that the improved weighted centroid algorithm is more accurate than the centroid algorithm and the positioning error is less than 1m.
【作者單位】： 陜西科技大學(xué)電氣與信息工程學(xué)院;
【基金】：陜西省教育廳項目“基于RSSI差值比例改進定位算法的研究”(12JK0521) 陜西省西安未央?yún)^(qū)科技項目“基于物聯(lián)網(wǎng)的信息監(jiān)控平臺研究”(2012-03)
【分類號】：TN92;TP391.3
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本文編號：2313195