發(fā)布時(shí)間：2018-10-05 17:41

【摘要】：摘要：因價(jià)格低廉、易于安裝和耐久性好,無(wú)線傳感技術(shù)在土木工程領(lǐng)域中受到廣泛關(guān)注并被應(yīng)用于實(shí)際監(jiān)測(cè)中,但是采取電池供電的傳統(tǒng)無(wú)線傳感器存在長(zhǎng)期供能不足的問(wèn)題。從外部環(huán)境中獲取能量并給無(wú)線傳感節(jié)點(diǎn)供電已成為當(dāng)前研究熱點(diǎn),其中使用壓電效應(yīng)收集周圍環(huán)境中的機(jī)械能是一種比較高效的集能模式。本文利用這種效應(yīng),俘獲車輛運(yùn)動(dòng)引起的路面變形能,提出應(yīng)用于路面變形能俘獲的壓電俘能器,將變形能轉(zhuǎn)變成電能并存儲(chǔ)起來(lái),進(jìn)而可為道路基礎(chǔ)設(shè)施提供能量,還可利用俘能器的傳感效應(yīng)對(duì)路面交通進(jìn)行實(shí)時(shí)監(jiān)測(cè)。 文中將壓電俘能器埋設(shè)于路面中進(jìn)行道路變形能俘獲,共分為五章：第一章給出課題研究背景和意義；第二章對(duì)研究理論與方法進(jìn)行了介紹；第三章基于Euler-Bernoulli梁理論,將公路簡(jiǎn)化為彈性地基梁,路面運(yùn)動(dòng)車輛簡(jiǎn)化為移動(dòng)線荷載,通過(guò)應(yīng)用Fourier變換及柯西留數(shù)理論計(jì)算出了路面結(jié)構(gòu)的變形響應(yīng),并應(yīng)用正壓電效應(yīng)得到了壓電俘能器的電壓及功率輸出：第四章基于Kirchhoff板理論,將公路系統(tǒng)簡(jiǎn)化為彈性地基板,路面運(yùn)動(dòng)車輛簡(jiǎn)化為移動(dòng)均布荷載,與第三章的梁模型類似,進(jìn)行了俘能分析；第五章考慮實(shí)際情況,將運(yùn)動(dòng)車輛輪壓簡(jiǎn)化為四個(gè)移動(dòng)均布荷載,同樣基于板理論,給出了理論解析,并運(yùn)用Simulink模擬了壓電俘能器為電池充電的全過(guò)程。 通過(guò)本文的理論探討,為將來(lái)的俘能器選型及道路中俘能器應(yīng)用提供了一定的借鑒。
[Abstract]:Abstract: because of its low price, easy installation and good durability, wireless sensing technology has been widely concerned in the field of civil engineering and has been applied in practical monitoring. However, the traditional wireless sensor with battery power supply has the problem of insufficient power supply for a long time. Obtaining energy from the external environment and supplying power to wireless sensor nodes has become a hot research topic. Among them, the use of piezoelectric effect to collect mechanical energy in the surrounding environment is a more efficient energy collection mode. In this paper, by using this effect, the road deformation energy caused by the motion of the vehicle is captured, and a piezoelectric energy capture device applied to the road deformation energy capture is proposed, which can convert the deformation energy into electric energy and store it, thus providing energy for the road infrastructure. The sensor effect of the energy capture device can also be used to monitor the road traffic in real time. In this paper, the piezoelectric energy capture device is buried in the road for deformation energy capture, which is divided into five chapters: the first chapter gives the background and significance of the research, the second chapter introduces the research theory and methods, the third chapter is based on the Euler-Bernoulli beam theory. The highway is simplified as an elastic foundation beam, and the moving vehicle is simplified as a moving line load. The deformation response of the pavement structure is calculated by applying the Fourier transform and Cauchy residue theory. The voltage and power output of the piezoelectric energy capture device is obtained by using the positive piezoelectric effect. In chapter 4, based on the Kirchhoff plate theory, the highway system is simplified as the elastic foundation plate, and the moving vehicle is simplified as the moving uniform load, which is similar to the beam model in the third chapter. In the fifth chapter, considering the actual situation, the wheel pressure of moving vehicle is simplified to four moving uniform loads, and the theoretical analysis is given based on the plate theory, and the whole process of charging the battery with piezoelectric energy capture device is simulated by Simulink. Through the theoretical discussion in this paper, it provides some reference for the selection of energy capture device and the application of energy capture device in the road in the future.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U416.2;TM619

【共引文獻(xiàn)】

相關(guān)期刊論文 前1條

1 鄭學(xué)軍;梅靖羚;張勇;張智雄;費(fèi)明祥;;末端質(zhì)量塊對(duì)層合懸臂梁d_(15)模式壓電俘能器性能的影響[J];湘潭大學(xué)自然科學(xué)學(xué)報(bào);2014年02期

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本文編號(hào)：2254267