Energy Optimization of Smart Water Systems using UAV Enabled Zero-Power Wireless Communication Networks

Radhakrishnan, Varsha (2023) Energy Optimization of Smart Water Systems using UAV Enabled Zero-Power Wireless Communication Networks. Doctoral thesis, Birmingham City University.

Varsha Radhakrishnan PhD Thesis published_Final version_Submitted Mar 2023_Final Award Nov 2023.pdf - Accepted Version

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Real-time energy consumption is a crucial consideration when assessing the effectiveness and efficiency of communication using energy hungry devices. Utilizing new technologies such as UAV-enabled wireless powered communication networks (WPCN) and 3D beamforming, and then a combination of static and dynamic optimization methodologies are combined to improve energy usage in water distribution systems (WDS).

A proposed static optimization technique termed the Dome packing method and dynamic optimization methods such as extremum seeking are employed to generate optimum placement and trajectories of the UAV with respect to the ground nodes (GN) in a WDS.

In this thesis, a wireless communication network powered by a UAV serves as a hybrid access point to manage many GNsin WDS. The GNs are water quality sensors that collect radio frequency (RF) energy from the RF signals delivered by the UAV and utilise this energy to relay information via an uplink. Optimum strategies are demonstrated to efficiently handle this process as part of a zero-power system: removing the need for manual battery charging of devices, while at the same time optimizing energy and data transfer over WPCN.

Since static optimization does not account for the UAV's dynamics, dynamic optimization techniques are also necessary. By developing an efficient trajectory, the suggested technique also reduces the overall flying duration and, therefore, the UAV's energy consumption. This combination of techniques also drastically reduces the complexity and calculation overhead of purely high order static optimizations.

To test and validate the efficacy of the extremum seeking implementation, comparison with the optimal sliding mode technique is also undertaken. These approaches are applied to ten distinct case studies by randomly relocating the GNs to various positions. The findings from a random sample of four of these is presented, which reveal that the proposed strategy reduces the UAV's energy usage significantly by about 16 percent compared to existing methods.

The (hybrid) static and dynamic zero-power optimization strategies demonstrated here are readily extendable to the control of water quality and pollution in natural freshwater resources and this will be discussed at the end of this thesis.

Item Type: Thesis (Doctoral)
March 2023Submitted
November 2023Accepted
Uncontrolled Keywords: beamforming, energy optimization methods, unmanned aerial vehicle, water distribution network, wireless powered communication network
Subjects: CAH13 - architecture, building and planning > CAH13-01 - architecture, building and planning > CAH13-01-02 - building
Divisions: Doctoral Research College > Doctoral Theses Collection
Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment
Depositing User: Jaycie Carter
Date Deposited: 18 Jan 2024 16:01
Last Modified: 18 Jan 2024 16:01

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