【摘要】：隨著能源危機的加劇,能量采集技術飛速發(fā)展,與此同時為了滿足人類經濟社會的發(fā)展需要,物聯(lián)網傳感器種類和數目急速增長,因此利用能量采集技術和無線傳感器技術結合創(chuàng)造“無電池”無線傳感器網絡已經是大勢所趨。本文在深入研究多種能量采集轉換技術和無線傳感器網絡技術的基礎上,首先分析了該課題國內外的研究現狀,隨后闡述了太陽能和溫差能采集技術原理,最后進行課題的相關硬件、軟件設計和相關應用場景理論探究。本文設計了針對太陽能和熱能采集的能量采集電路,并結合實際的應用場景設計了可編程電源管理電路,經過測試該電源管理電路的能量管理效率可達90%。在設計中為了能夠充分保證系統(tǒng)的穩(wěn)定性,采用了超低功耗的無線收發(fā)模塊,針對能量采集的動態(tài)性,通過編碼實現對于無線收發(fā)模塊信號發(fā)射頻率的動態(tài)控制,實現了能量的均衡。本文還探究了動態(tài)能量采集下的無線信道分時隙最優(yōu)功率分配策略。確立了動態(tài)功率受限條件下的無線信道吞吐量數學模型,在此基礎上提出了一種改進型的注水算法,經測試該算法實現了課題研究目標。本文還研究了動態(tài)能量采集下的無線視頻摘要傳輸方案。首先確立了動態(tài)能量采集下的視頻摘要傳輸模型,然后采用優(yōu)化策略對模型進行優(yōu)化,最后采用冒泡法確定了能量采集下的最優(yōu)的視頻摘要。經仿真驗證,該算法具有很好的收斂性的同時,運算復雜度也在可控的范圍內。
[Abstract]:With the aggravation of energy crisis, energy acquisition technology develops rapidly. Meanwhile, in order to meet the needs of human economic and social development, the types and number of sensors in the Internet of things are increasing rapidly. Therefore, using energy acquisition technology and wireless sensor technology to create a "battery free" wireless sensor network has been the trend of the times. On the basis of deep research on various energy acquisition and conversion technologies and wireless sensor network technologies, this paper first analyzes the current research situation of this topic at home and abroad, and then expounds the principle of solar energy and temperature difference energy acquisition technology. Finally, the related hardware, software design and related application scene theory are explored. In this paper, an energy acquisition circuit for solar energy and thermal energy acquisition is designed, and a programmable power supply management circuit is designed in combination with practical application scenarios. The energy management efficiency of the power management circuit can reach 90% after testing. In order to fully guarantee the stability of the system, the ultra-low power wireless transceiver module is adopted in the design. In view of the dynamic nature of energy acquisition, the dynamic control of the signal transmitting frequency of the wireless transceiver module is realized by coding. The energy balance is realized. This paper also explores the optimal power allocation strategy for wireless channel time division based on dynamic energy acquisition. A mathematical model of wireless channel throughput under dynamic power constraints is established, and an improved water injection algorithm is proposed on the basis of which the research goal is achieved by testing the algorithm. The wireless video digest transmission scheme based on dynamic energy acquisition is also studied in this paper. Firstly, the video digest transmission model under dynamic energy acquisition is established, then the optimization strategy is adopted to optimize the model. Finally, the best video summary under energy acquisition is determined by bubbling method. The simulation results show that the algorithm has good convergence and the computational complexity is within a controllable range.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP212.9;TN929.5

【參考文獻】

相關期刊論文 前7條

1 范平;鄭壯豪;張東平;梁廣興;;熱電薄膜與薄膜溫差電池研究進展[J];真空科學與技術學報;2012年08期

2 周敬雯;鄧帥;代彥軍;王如竹;;一種利用半導體熱電效應的空調床的性能研究及其評價[J];制冷學報;2012年03期

3 朱紅松;孫利民;;無線傳感器網絡技術發(fā)展現狀[J];中興通訊技術;2009年05期

4 李林;郭隱彪;陳旭遠;;基于微機電系統(tǒng)的振動能量采集器件設計分析[J];機械工程學報;2009年09期

5 楊平;王威;;MSP430系列超低功耗單片機及應用[J];國外電子測量技術;2008年12期

6 王佩紅;戴旭涵;趙小林;;微型電磁式振動能量采集器的研究進展[J];振動與沖擊;2007年09期

7 許志建,徐行;塞貝克效應與溫差發(fā)電[J];現代物理知識;2004年01期

相關碩士學位論文 前1條

1 劉旭圓;獨立光伏發(fā)電系統(tǒng)協(xié)調控制技術研究[D];燕山大學;2011年

，

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