https://repositorio.ufpb.br/jspui/handle/123456789/13466 2026-04-07T12:48:58Z 2026-04-07T12:48:58Z Cavalcante Filho, Francisco Lima https://repositorio.ufpb.br/jspui/handle/123456789/35368 2025-07-31T06:08:08Z 2025-05-12T00:00:00Z

Título: Desenvolvimento de um dispositivo para a coleta de dados de vibração em drones utilizando uma FPGA Kria Kr260, acelerômetros ADXL345 e envio via Bluetooth Autor(es): Cavalcante Filho, Francisco Lima Orientador: Brito, Alisson Vasconcelos de Abstract: This work presents the development of an embedded device for vibration data acquisition in drones, focused on predictive maintenance and aligned with Industry 4.0 principles. The system was built using a Kria KR260 FPGA, leveraging its parallelism to integrate multiple MicroBlaze cores, each dedicated to reading ADXL345 accelerome ter sensors via the I²C protocol. The acquired data was stored, processed, and finally transmitted via UART to an HC-05 Bluetooth module, enabling wireless communication with external devices. The goal of the project is to enable efficient real-time vibration signal collection, allowing for the identification of mechanical faults through subsequent analysis. Experiments were conducted on a MARK4 drone operating under four distinct condition classes, including a healthy state and various simulated faults. A measurement range of ±16g was used, with a sampling rate of 400 Hz. The results demonstrated that the proposed solution is effective for embedded applications requiring low latency, high reliability, and scalability, serving as a viable tool for real-time diagnostic and monitoring systems. Editor: Universidade Federal da Paraíba Tipo: TCC

2025-05-12T00:00:00Z Cavalcante Filho, Francisco Lima https://repositorio.ufpb.br/jspui/handle/123456789/35366 2025-07-31T06:08:13Z 2025-05-12T00:00:00Z

Título: Desenvolvimento de um dispositivo para a coleta de dados de vibração em drones utilizando uma FPGA Kria Kr260, acelerômetros ADXL345 e envio via Bluetooth Autor(es): Cavalcante Filho, Francisco Lima Orientador: Brito, Alisson Vasconcelos de Abstract: This work presents the development of an embedded device for vibration data acquisition in drones, focused on predictive maintenance and aligned with Industry 4.0 principles. The system was built using a Kria KR260 FPGA, leveraging its parallelism to integrate multiple MicroBlaze cores, each dedicated to reading ADXL345 accelerome ter sensors via the I²C protocol. The acquired data was stored, processed, and finally transmitted via UART to an HC-05 Bluetooth module, enabling wireless communication with external devices. The goal of the project is to enable efficient real-time vibration signal collection, allowing for the identification of mechanical faults through subsequent analysis. Experiments were conducted on a MARK4 drone operating under four distinct condition classes, including a healthy state and various simulated faults. A measurement range of ±16g was used, with a sampling rate of 400 Hz. The results demonstrated that the proposed solution is effective for embedded applications requiring low latency, high reliability, and scalability, serving as a viable tool for real-time diagnostic and monitoring systems. Editor: Universidade Federal da Paraíba Tipo: TCC

2025-05-12T00:00:00Z Santos, Eduardo Luiz Araujo dos https://repositorio.ufpb.br/jspui/handle/123456789/34915 2025-06-26T06:07:43Z 2025-05-13T00:00:00Z

Título: Uma abordagem em três etapas para o problema de roteamento de veículos com múltiplas restrições de sincronização Autor(es): Santos, Eduardo Luiz Araujo dos Orientador: Bulhões Júnior, Teobaldo Leite Abstract: This work presents a three-stage approach to solve the Vehicle Routing Problem with Multiple Synchronization Constraints (VRPMS), a complex extension of the Vehicle Routing Problem with Time Windows (VRPTW), in which some customers require syn chronized visits from two or more distinct vehicles. The proposed method incorporates synchronization parameters (δ and γ) that enable its applicability to different problem variants involving synchronization constraints. The approach combines an Iterated Local Search (ILS) heuristic for efficient solution generation, an exact Set Partitioning (SP) mo del for solution refinement, and a final temporal validation stage using a synchronization model. The local search employs a subsequence concatenation strategy for constraint eva luation and a two-stage search mechanism to select the best move, aiming to mitigate the impact of synchronization. Additionally, a relaxed form of synchronization constraints is adopted in both the ILS and the SP model. Extensive experiments were conducted based on the instance set proposed by Hojabri et al. (2018), considering different sizes, instance classes, and synchronization levels. The results highlight the efficiency of the proposed approach in generating high-quality solutions in reduced computational times and emphasize the impact of synchronization constraints on solution feasibility and com putational cost. The exact stage showed strong potential for solution refinement, while the synchronization model enabled a rigorous verification of the relative time windows between routes. Editor: Universidade Federal da Paraíba Tipo: TCC

2025-05-13T00:00:00Z Dias, Wilter da Silva https://repositorio.ufpb.br/jspui/handle/123456789/19731 2021-03-16T06:50:07Z 2017-11-29T00:00:00Z

Título: Homologação do protocolo L3: uma aplicação para verificar o uso correto do protocolo em um periferico Autor(es): Dias, Wilter da Silva Orientador: Amorim, Mardson Freitas de Abstract: The L3 protocol is responsible for defining a data packet which will serve for communication between a peripheral and a master. It is a protocol used internally by the LMI (Laboratory of Measurements and Instrumentation) of the UFPB (Universidade Federal da Paraíba), thus already having its documentation specified. The idea of ​​a protocol homologator is to validate the sending of the packet in order to clarify whether the instruction was executed correctly or not. Thus the uses of these instructions vary according to the peripheral to be used. It is intended to register the peripherals, emphasizing the codes they implement and the fixed value fields of the package. From the documentation of the protocol and the domain that will be applied, it will be useful to register in the database for each peripheral attesting how it should receive and respond to a packages; to test it, and validate it by the application. It will also need: a peripheral to test the homologation, and the generation of a textual report by the homologador. In order to develop the application of the homologator, it will be necessary to specify its operation, structure the database, define the man-machine interfaces and the hardware interface, and use a peripheral to test the homologation. For this purpose, it is essential to use the use-case diagram, Entity- Relationship model, Model-View-Controller model in the application, to design the graphical interfaces, to draw up the application flowcharts and to define the development process. As a result, it is expected to reach the functional and non-functional requirements of the application, ranging from its desired operation, the characteristics and internal aspects of the system, to the manipulation of input and output data to the user. It is expected that the approval system will be used in future projects that use the L3 protocol, in order to verify that such projects have actually made the correct use of the protocol in their peripherals. Improvements to the approval system are still think, and future maintenance is welcome. Editor: Universidade Federal da Paraíba Tipo: TCC

2017-11-29T00:00:00Z