【摘要】：自2002年10月Zigbee Alliance成立以來,Zigbee協(xié)議從Zigbee 2004、Zigbee2006發(fā)展到Zigbee Pro(即Zigbee 2007)。作為物聯(lián)網(wǎng)技術(shù)的重要組成部分,Zigbee技術(shù)廣泛應(yīng)用于軍事、汽車、醫(yī)療、智能家居等領(lǐng)域,Zigbee網(wǎng)絡(luò)的穩(wěn)定性、可靠性和Zigbee網(wǎng)絡(luò)節(jié)點(diǎn)容量也成為人們關(guān)注的熱點(diǎn)。在使用Zigbee節(jié)點(diǎn)組網(wǎng)的過程中,我們發(fā)現(xiàn)隨著節(jié)點(diǎn)數(shù)量的增加,Zigbee網(wǎng)絡(luò)開始出現(xiàn)節(jié)點(diǎn)隨機(jī)掉線現(xiàn)象:當(dāng)節(jié)點(diǎn)達(dá)到一定數(shù)量時,新增的節(jié)點(diǎn)會隨時上線,在線的一個或幾個節(jié)點(diǎn)隨時會掉線,Zigbee網(wǎng)絡(luò)的拓?fù)浣Y(jié)構(gòu)會隨之變化,網(wǎng)絡(luò)變得不穩(wěn)定;此時,Zigbee網(wǎng)絡(luò)中的感知節(jié)點(diǎn)(溫度、濕度、壓力、光照、二氧化碳等)和控制節(jié)點(diǎn)(GPIO)等無法正常工作,從而導(dǎo)致該網(wǎng)絡(luò)無法正常運(yùn)行。本文根據(jù)Zigbee的基本原理,在大量可重復(fù)實(shí)驗(yàn)數(shù)據(jù)的基礎(chǔ)上,分析了Zigbee網(wǎng)絡(luò)節(jié)點(diǎn)掉線的原因,找到了本實(shí)驗(yàn)環(huán)境下Zigbee網(wǎng)絡(luò)穩(wěn)定工作時的最大節(jié)點(diǎn)容量,提出了一種改進(jìn)Zigbee網(wǎng)絡(luò)節(jié)點(diǎn)容量的方法。
[Abstract]:Since the establishment of Zigbee Alliance in October 2002, the Zigbee protocol has evolved from Zigbee 2004 / Zigbee2006 to Zigbee Pro (Zigbee 2007). As an important part of the Internet of things, Zigbee technology has been widely used in military, automobile, medical, smart home and other fields, such as the stability, reliability and Zigbee network node capacity. In the process of using Zigbee nodes to form a network, we find that with the increase of the number of nodes, the random drop of nodes begins to occur in the network: when the number of nodes reaches a certain number, the new nodes will go online at any time. One or more nodes on the line will drop the topology of the Zigbee network at any time, and the network will become unstable; at this point, the sensing nodes in the Zigbee network (temperature, humidity, pressure, light, etc.) Carbon dioxide, etc.) and control nodes, such as (GPIO), do not work properly, resulting in the network not functioning properly. According to the basic principle of Zigbee and on the basis of a lot of repeatable experimental data, this paper analyzes the reason of node dropping in Zigbee network, and finds out the maximum node capacity of Zigbee network when it works stably in this experimental environment. A method to improve the node capacity of Zigbee network is presented.
【學(xué)位授予單位】：長春大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN92

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本文編號：2189038