确保人体安全的无线可充电传感器网络系统优化算法研究

The recently developed wireless rechargeable sensor networks technology based on wireless power transfer allows sensor nodes to transfer the RF energy emitting from chargers to DC energy to power themselves, effectively alleviates the lifetime bottleneck of sensor networks. This technology was attracted intensive research and industry interests. The charging utility optimization is one of the most important research contents of wireless rechargeable sensor networks. The key limitations of prior optimum schemes is that they overlook the danger of electromagnetic radiation during the charging process. Exposure to high EMR, however, has been proved to probably lead to memory decay, gene changes, tissue impairment, brain tumor and abortion for pregnant women. The project carries on research on human safety issues, considers deployment, scheduling and moible stragtegy of wireless chargers. Especially, the project studies the problems of charger deployment, scheduling of directional wireless chargers, scheduling with charging fairness and mobile charging strategy with guaranteed human safety, and systematically evaluates the proposed methods by simulation analysis and real testbed experiments. The overall goal of the project is to optimize safe, realistic, fair and high-performance wireless charging strategies. The project plays an important role in designing wireless charging mechanism with guaranteed human safety, and removes the barriers for application and promotion of wireless rechargeable sensor networks.

近年来发展的基于无线电能传输的无线可充电传感器网络技术允许传感器节点将无线充电器发出的射频能量转化成直流电能为其供电，有效缓解了传统传感器网络生存周期瓶颈问题，受到了学术界和工业界的广泛重视。充电效用优化是目前无线可充电传感器网络重要研究内容之一。目前已有优化策略的局限是其往往忽视了充电过程中电磁辐射对人体带来的危害，而暴露在高电磁辐射中已被证实可能导致记忆力衰退、基因改变、组织损伤、脑肿瘤和孕妇流产等。本项目围绕人体安全这一核心问题，考虑无线充电器部署，调度，移动策略的优化，具体从确保人体安全的充电器部署策略，有向充电器调度，公平充电调度及充电器移动策略四方面展开研究，通过仿真分析及实际测试平台进行系统的验证，整体目标是设计安全、实用、公平、高效的无线充电策略。本项目对研究确保人体安全的无线充电机制具有重要意义，为无线可充电传感器网络技术的应用和推广扫清了障碍。

近年来发展的基于无线电能传输的无线可充电传感器网络技术允许传感器节点将无线充电器发出的射频能量转化成直流电能为其供电，有效缓解了传统传感器网络生存周期瓶颈问题，受到了学术界和工业界的广泛重视。充电效用优化是目前无线可充电传感器网络重要研究内容之一。目前已有优化策略的局限是其往往忽视了充电过程中电磁辐射对人体带来的危害，而暴露在高电磁辐射中已被证实可能导致记忆力衰退、基因改变、组织损伤、脑肿瘤和孕妇流产等。本项目围绕人体安全这一核心问题，兼顾实用化考虑，研究无线充电器部署，调度，移动策略的优化，具体从确保人体安全的实用充电器部署策略，确保人体安全的实用充电器调度问题，确保人体安全的公平充电调度问题，及实用化的充电器移动策略问题四方面展开研究，通过仿真分析及实际测试平台进行系统的验证，最终设计安全、实用、公平、高效，且具有理论性能保障的无线充电策略。本项目对研究确保人体安全的无线充电机制具有重要意义，为无线可充电传感器网络技术的应用和推广扫清了障碍。