Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 155 for “"Battery Life"”.
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The Design of Ad Hoc Networks with Minimum Power and Maximum Battery Life
… most cases the terminals in these networks are battery powered and so, to maximise the lifetime of, the network, the power consumption of each node needs to be managed. This thesis studies the optimum design of a multi-hop ad hoc network. Each layer is analysed and cross layering is considered …
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SMART INTERSECTIONS: COOPERATIVE TRAFFIC CONTROL FOR LONGER BATTERY LIFE OF COMMUNICANT AUTONOMOUS VEHICLES
… impacts of cooperative control of traffic on the battery life of communicant autonomous vehicles (CAVs), however, are not necessarily positive. This research develops an analytical model for the battery-capacity loss rate of CAV platoons coordinated to pass through signal-free smart intersections …
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Optimal Architectures for Electric Vehicle Fast Charging and Impacts on Grid and Battery Life
… on the grid and accelerated degradation of EV battery life. Therefore, a optimally structured approach is required to achieve scalable megawatt-scale future EVFS. This thesis proposes optimal EVFS architecture that addresses both grid and battery related challenges posed by high-power fast …
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Innovative AI-Enabled Digital Twins for Smart Battery Management: Enhancing Battery Life and Performance in Smart Vehicles
L'abstract è presente nell'allegato / the abstract is in the attachment
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Development and trialling of a low-power wearable fall detector
… power-conserving technologies to achieve a long battery life, whilst remaining high fall detection accuracy. The prototypes devices were evaluated systematically using the data collected in several laboratory-based and free-living trials. The battery lives of the proposed fall detectors were …
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Lower power RF transceiver modeling and design for wireless microsensor networks
… The main design objective is to, maximize the battery life of the sensor nodes while ensuring reliable operations. To achieve this goal, the microsensor node has to be designed in a highly integrated fashion and optimized across all levels of system abstraction. For microsensor networks, the RF …
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An exploratory design of a 65 nm CMOS buck converter for maximum efficiency
Portable battery-operated consumer devices, such as mp3 players, cell phones, and digital cameras, are becoming ever more prevalent and so the need for long battery life is increasingly important. These small devices contain power converters that produce lower supply voltages from the fixed battery …
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Characterization of Uplink Transmit Power and Talk Time in WCDMA Networks
… the most attention as they draw significant battery current and continue to represent the largest power load on the battery. In order to improve the overall efficiency of a power amplifier, it is important to know the operating uplink transmit power levels of a mobile phone in the WCDMA …
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An Investigation of a Theoretical Zigbee-Based Border Crossing System
… allowing devices to have an exceptionally long battery life. Longer battery life results in cost-effective deployment of this proposed system while still supplying sufficient data throughput.
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On the economic and technological forces shaping mobile transceiver architecture
… systems, namely data rate, error rate, and battery life. A brief chapter discussing the dominant wireless communication network architecture, TDMA and CDMA, corroborates the bottleneck analysis and effectively assigns the error rate and battery life bottlenecks to the handset ODM and …
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Denial-of-Service Attacks on Battery-Powered Mobile Computers
… deprivation attacks is to rapidly drain the battery of the mobile devices, rendering the device inoperable long before the expected battery lifetime, thus denying the service the user expects from the mobile device. The purpose of this research is to investigate these types of attacks so that …
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Modeling of Power Consumption and Fault Tolerance for Electronic Textiles
… short circuit faults can disconnect or drain the battery respectively, affecting both battery life and the performance of the e-textile. This thesis describes the development of both of these models and their interfaces. It then presents simulation results of the performance of an acoustic …
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Minimalist Hardware Architectures for Agent Tracking and Guidance
… be obtained. This can lead to huge advantages in battery life, cost, and reliability. Even if cost is of no concern, battery life is often a limiting factor in many applications. Thus, a minimalist hardware system is critical in achieving the system requirements. In this thesis, we will discuss an …
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Design, Analysis and Implementation of Multiphase Synchronous Buck DC-DC Converter for Transportable Processor
… users expect more application features and long battery life, the processor current has to increase to response the demanding while the voltage has to decease to save the power loss. Therefore, it is necessary for a system designer to improve the efficiency of the voltage regulator converter …
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A reconfigurable root raised cosine filter for a mobile receiver
… cost. The major cost factor in mobile devices is battery life.
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A Secure Lightweight Wireless M-Bus Protocol for IoT: Leveraging the Noise Protocol Framework
… wM-Bus security issues, particularly in battery-operated smart meters, the study explores the NPF’s lightweight, adaptable security solutions. Implementation analysis focuses on NPF handshake patterns NX (non-interactive with public key transmission by the initiator) and XX (mutual public …
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Human-Centered Optimization of Mobile Sign Language Video Communication
The proliferation of mobile devices is greater than ever; however, bandwidth and battery life have not grown accordingly to support mainstream use of mobile video communication. This dissertation contributes to the continued effort of making mobile sign language communication more accessible and …
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In-depth study and analysis of lithium-ion battery states using battery degradation data from electrochemical impedance spectroscopy
… focuses on the study and analysis of lithium-ion battery (LIB) degradation mechanisms throughout the battery life. The performance of LIB deteriorates due to chemical and mechanical degradation that occurs during the battery operation affecting the health of the batteries. It is critical to …
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Scheduling of Stream-Based Real-Time Applications for Heterogeneous Systems
… more and more processing power and increasing battery life to their users. Heterogenous systems offer opportunities to solve this challenge. In this thesis, we study the scheduling of tasks in a real-time context on a heterogeneous system-on-chip. We develop a heuristic scheduling algorithm …
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Low power CMOS IC, biosensor and wireless power transfer techniques for wireless sensor network application
… due to the interest in healthcare. Traditional battery-powered devices suffer from large size, weight and secondary replacement surgery after the battery life-time which is often not desired, especially for an implantable application. Thus an energy harvesting method needs to be investigated. In …
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