In Surveillance Wireless Sensor Networks (SWSN), the nodes are distributed at the borders to detect unauthorized intrusions. In such applications, as the nodes are usually equipped with limited batteries and the network area is harsh to be accessible for humans, energy efficiency is considered as one of the main issues in designing the sensor networks. In the last years, Wireless Rechargeable Sensor Networks (WRSN) provides valuable insights into solving the energy constraint problem in WSNs. In a WRSN, Wireless Mobile Chargers (WMC) are responsible to recharge the batteries of the sensor nodes in order to enhance the operation time of the network. In most of the previous WRSN based schemes, the WMCs recharge the nodes singly and directly, which results in increasing the travel time of WMC and waiting time of sensor nodes. In addition, despite of using WMC, the permanent network lifetime has not been addressed in most of the previous schemes. Therefore, to overcome the limitations of existing literature, this research work focuses on the design and development of Broker-based Nodes Recharging Scheme (BNRS) which significantly contributes to improved lifetime and performance of SWSN. In the proposed scheme, power banks are employed as brokers between sensor nodes and WMC. The main duty of a power bank is to receive energy from WMC and transfer to the sensor nodes. Based on the simulation experiments the proposed BNRS achieves the permanent network operation which results in increasing security in the border of countries.

中文翻译：

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监视无线可充电传感器网络的基于代理的节点充电方案

在监控无线传感器网络（SWSN）中，节点分布在边界以检测未经授权的入侵。在这样的应用中，由于节点通常配备有有限的电池，并且网络区域很难被人类使用，因此能源效率被认为是设计传感器网络的主要问题之一。在过去的几年中，无线可充电传感器网络（WRSN）为解决WSN中的能量约束问题提供了宝贵的见识。在WRSN中，无线移动充电器（WMC）负责为传感器节点的电池充电，以延长网络的运行时间。在大多数先前的基于WRSN的方案中，WMC单独对节点进行直接充电，这导致WMC的行进时间和传感器节点的等待时间增加。此外，尽管使用了WMC，但大多数以前的方案都没有解决永久网络生存期的问题。因此，为了克服现有文献的局限性，本研究工作集中在基于代理的节点充值方案（BNRS）的设计和开发上，该方案显着有助于提高SWSN的寿命和性能。在提出的方案中，移动电源被用作传感器节点和WMC之间的代理。移动电源的主要职责是从WMC接收能量并传输到传感器节点。基于仿真实验，提出的BNRS实现了永久性网络运行，从而提高了国家边界的安全性。这项研究工作的重点是基于代理的节点充值方案（BNRS）的设计和开发，该方案对提高SWSN的寿命和性能做出了重大贡献。在提出的方案中，移动电源被用作传感器节点和WMC之间的代理。移动电源的主要职责是从WMC接收能量并传输到传感器节点。基于仿真实验，提出的BNRS实现了永久性网络运行，从而提高了国家边界的安全性。这项研究工作的重点是基于代理的节点充值方案（BNRS）的设计和开发，该方案对提高SWSN的寿命和性能做出了重大贡献。在提出的方案中，移动电源被用作传感器节点和WMC之间的代理。移动电源的主要职责是从WMC接收能量并传输到传感器节点。基于仿真实验，提出的BNRS实现了永久性网络运行，从而提高了国家边界的安全性。移动电源的主要职责是从WMC接收能量并传输到传感器节点。基于仿真实验，提出的BNRS实现了永久性网络运行，从而提高了国家边界的安全性。移动电源的主要职责是从WMC接收能量并传输到传感器节点。基于仿真实验，提出的BNRS实现了永久性网络运行，从而提高了国家边界的安全性。