基于微型能量采集的无线传感器网络自供电与传输系统
发布时间：2019-01-30 15:21
【摘要】：随着能源危机的加剧,能量采集技术飞速发展,与此同时为了满足人类经济社会的发展需要,物联网传感器种类和数目急速增长,因此利用能量采集技术和无线传感器技术结合创造“无电池”无线传感器网络已经是大势所趋。本文在深入研究多种能量采集转换技术和无线传感器网络技术的基础上,首先分析了该课题国内外的研究现状,随后阐述了太阳能和温差能采集技术原理,最后进行课题的相关硬件、软件设计和相关应用场景理论探究。本文设计了针对太阳能和热能采集的能量采集电路,并结合实际的应用场景设计了可编程电源管理电路,经过测试该电源管理电路的能量管理效率可达90%。在设计中为了能够充分保证系统的稳定性,采用了超低功耗的无线收发模块,针对能量采集的动态性,通过编码实现对于无线收发模块信号发射频率的动态控制,实现了能量的均衡。本文还探究了动态能量采集下的无线信道分时隙最优功率分配策略。确立了动态功率受限条件下的无线信道吞吐量数学模型,在此基础上提出了一种改进型的注水算法,经测试该算法实现了课题研究目标。本文还研究了动态能量采集下的无线视频摘要传输方案。首先确立了动态能量采集下的视频摘要传输模型,然后采用优化策略对模型进行优化,最后采用冒泡法确定了能量采集下的最优的视频摘要。经仿真验证,该算法具有很好的收敛性的同时,运算复杂度也在可控的范围内。
[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.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP212.9;TN929.5
本文编号：2418265
[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.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP212.9;TN929.5
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