本文選題：射頻識(shí)別 + 無(wú)線供電��； 參考：《哈爾濱理工大學(xué)》2014年碩士論文

【摘要】：針對(duì)目前電池供電的無(wú)線傳感器網(wǎng)絡(luò)節(jié)點(diǎn)能量受限和使用壽命不長(zhǎng)的問(wèn)題，本文基于電磁耦合諧振理論，設(shè)計(jì)了一種雙天線結(jié)構(gòu)的無(wú)線傳感器網(wǎng)絡(luò)節(jié)點(diǎn)。其中采用射頻識(shí)別技術(shù)實(shí)現(xiàn)對(duì)無(wú)線傳感器網(wǎng)絡(luò)節(jié)點(diǎn)的電能供應(yīng)，在2.4GHz頻段上完成無(wú)線傳感器網(wǎng)絡(luò)節(jié)點(diǎn)之間以及和數(shù)據(jù)終端之間的無(wú)線通信。針對(duì)無(wú)線傳感器網(wǎng)絡(luò)節(jié)點(diǎn)工作的穩(wěn)定性，數(shù)據(jù)精度以及是否能夠成無(wú)線傳感器網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)等問(wèn)題，搭建了相應(yīng)的測(cè)試系統(tǒng)，本系統(tǒng)中以工作在標(biāo)準(zhǔn)的超高頻段中的商業(yè)射頻識(shí)別閱讀器作為電磁波發(fā)射源，發(fā)射電磁波的頻率為915MHz，可以為分布在直徑為3米范圍內(nèi)的無(wú)線傳感器節(jié)點(diǎn)供電，系統(tǒng)中無(wú)線通信模塊采用nRF24L01芯片，用來(lái)實(shí)現(xiàn)短距離無(wú)線數(shù)據(jù)傳輸。選用低功耗的MSP430F149作為傳感器節(jié)點(diǎn)的處理器，以DS18B20和光敏電阻分為作為溫度和光強(qiáng)傳感器完成對(duì)溫度和光強(qiáng)信息的采集。 實(shí)驗(yàn)結(jié)果表明，隨著傳感器節(jié)點(diǎn)功耗的增加，供電距離變短。實(shí)驗(yàn)中溫度傳感器節(jié)點(diǎn)和光強(qiáng)傳感器節(jié)點(diǎn)的最大供電距離分別為2.8m和3.1m。在實(shí)驗(yàn)中傳感器節(jié)點(diǎn)的響應(yīng)時(shí)間最大為7s，與實(shí)驗(yàn)設(shè)備標(biāo)準(zhǔn)數(shù)據(jù)相比，精度偏差在5%以內(nèi)。針對(duì)其拓?fù)浣Y(jié)構(gòu)的實(shí)驗(yàn)表明，，無(wú)線供電的傳感器節(jié)點(diǎn)只能構(gòu)成簡(jiǎn)單的星狀網(wǎng)拓?fù)浣Y(jié)構(gòu)，由于傳感器節(jié)點(diǎn)對(duì)電磁波的屏蔽效應(yīng)而不能構(gòu)成拓?fù)浣Y(jié)構(gòu)更加復(fù)雜的傳感器網(wǎng)絡(luò)。
[Abstract]:Aiming at the problem of limited energy and short service life of battery-powered wireless sensor network nodes based on electromagnetic coupling resonance theory a dual-antenna wireless sensor network node is designed in this paper. Radio frequency identification (RFID) technology is used to realize the power supply to wireless sensor network nodes, and wireless communication between wireless sensor network nodes and data terminals is completed in the 2.4GHz band. Aiming at the stability, data precision and topology of wireless sensor network, a corresponding testing system is built. In this system, the commercial RFID reader, which works in the standard UHF band, is used as the electromagnetic wave emission source. The frequency of the electromagnetic wave emission is 915MHz, which can supply power to the wireless sensor nodes distributed in the range of 3 meters in diameter. The wireless communication module uses nRF24L01 chip to realize short-range wireless data transmission. MSP430F149 with low power consumption is chosen as the processor of sensor node, and DS18B20 and photosensitive resistor are used as temperature and light intensity sensors to complete the collection of temperature and light intensity information. The experimental results show that the power supply distance becomes shorter with the increase of sensor node power consumption. The maximum power supply distance of temperature sensor node and light intensity sensor node is 2.8 m and 3.1 m respectively. In the experiment, the maximum response time of sensor nodes is 7 s, and the precision deviation is less than 5% compared with the standard data of the experimental equipment. Experiments on its topology show that the sensor nodes powered by wireless can only form a simple stellate network topology. Because of the shielding effect of the sensor nodes to the electromagnetic waves, the sensor networks with more complex topology can not be constructed.
【學(xué)位授予單位】：哈爾濱理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP212.9;TN929.5

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 甘泉;胡桐逢;;藍(lán)牙技術(shù)與無(wú)線供電技術(shù)在智能家居中的應(yīng)用[J];自動(dòng)化與儀器儀表;2015年03期

相關(guān)博士學(xué)位論文 前1條

1 張曦煌;無(wú)線傳感器網(wǎng)絡(luò)的研究[D];江南大學(xué);2008年

本文編號(hào)：1811355