8393 research outputs found
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SPEECH ANALYSIS AND SYNTHESIS
No full textIn this project, spectral analysis and synthesis with its two types, FFT technique and LPC
techniques was implemented using Matlab code and Matlab GUI to display the results of
analysis and synthesis, the GUI was named SAS abbreviations to Speech Analysis and Synthesis.Speech signals are important signals in the communication systems. It must analyze in
order to obtain its important parameters and to compress it to make the maximum use of the
available bandwidth.
Speech analysis and synthesis has many techniques, each one of them had its own
advantages and disadvantages. This project seeks to investigate some of speech analysis and
synthesis techniques and make a comparison between those techniques
In this project, spectral analysis and synthesis with its two types, FFT technique and LPC
techniques was implemented using Matlab code and Matlab GUI to display the results of
analysis and synthesis, the GUI was named SAS abbreviations to Speech Analysis and Synthesis
DESIGN AND IMPLEMENTATION OF EPS (ELECTRICAL POWER SYSTEM) OF A CUBESAT
No full textThis project is to design and implement an EPS for the KN-SAT1. The KN-SAT1 is a Cubesat that has been developed in the University of Khartoum as the first educational Cubesat in the Sudan. The design must provide a reliable power source by satisfying the requirements of charging the batteries with power from the solar cells, regulating the battery voltage to the requested bus voltage and protecting the Cubesat subsystems from the overcurrent associated with the device failure.Cubesats are picosatellites of standardized dimensions which can be operated from universites or radio amateur ground stations. They offer hands-on experience to engineering students in designing, developing, testing and operating a real spacecraft system and its ground segment. One of the most critical aspects of the Cubesat is the Electrical Power System (EPS) since the electrical power is necessary for a Cubesat to operate. The EPS of the Cubesat consists mainly of solar cells, batteries, voltage converters and protection circuits. The EPS is responsible of providing stable power to the Cubesat subsystems. The purpose of this project is to design and implement an EPS for the KN-SAT1. The KN-SAT1 is a Cubesat that has been developed in the University of Khartoum as the first educational Cubesat in the Sudan. The design must provide a reliable power source by satisfying the requirements of charging the batteries with power from the solar cells, regulating the battery voltage to the requested bus voltage and protecting the Cubesat subsystems from the overcurrent associated with the device failure
SECURITY MANAGEMENT TO THE MINISTRY OF HIGHER EDUCATION NETWORK
No full textThis project identified the design for a building wide LAN for the Ministry of Higher
Education new building. This institutional wide LAN will connect all workstations
and servers present throughout the building. A web-enabled information system will
be established that will use the LAN to deliver information and share resources. The
proposed systems design will enable the Access Control and Parking System security.This project identified the design for a building wide LAN for the Ministry of Higher
Education new building. This institutional wide LAN will connect all workstations
and servers present throughout the building. A web-enabled information system will
be established that will use the LAN to deliver information and share resources. The
proposed systems design will enable the Access Control and Parking System security.
Major systems to be designed include logical and physical network designs, IP
addressing schemes, IP security, data network security, Access control system
security and Parking area security for the Ministry of Higher Education new building.
The proposed design of the new network will have many benefits over the current
Ministry network systems such as sharing of data, equipment and providing
communication between the different departments and divisions of the Ministry. This
will prove beneficial in reduction of paper base communication, increase efficiency,
save the time and make availability of any type of data for simultaneous users within
the whole Ministry. In addition the Internet access and hands-on experience with
computer technology would enhance the Ministry’s goals of research and
development with modern skills and a global perspective.
An approach for the design of a high performance, reliable and manageable building
network is described. The approach is centered on utilization of a simulation software
program called OPNET to simulate different network designs and evaluate the results
of these networks’s response. In this approach, a model of the proposed network is
created, which will be further modified to develop a better network based on the
results of simulation modeling in OPNET.
The design approach used in this project involves firstly the creation of a similar
model of the proposed network for the new building, secondly converts this model
from flat to logical hierarchal model, after that simulate this network on OPNET to
find performance characteristics. The fourth step concern with the modification of the
existing model into different configurations by changing the network topology.
Further the simulation of each model on OPNET will take place to find their
respective performance characteristics. The final step will be the comparison of these
characteristic performances to determine and select the best performance model.
After running the simulations and evaluating the results, the network responsiveness
in each configuration was compared to other models based on various performance
attributes. Based on this approach it was concluded that the best configuration is the
second configuration namely "The original Proposed Network by the Ministry of
Higher Education"
WIND TURBINE AND DIESEL GENERATOR, HYBRID CONTROL SYSTEM.
No full textThe scope of the project is to design a station of hybrid system (wind turbine/ diesel generator) for a location (Soba, Khartoum) that provides sufficient power for a predetermined load. The reason why diesel generation is used is that the generation from wind turbines is not constant, which leads to is inefficient generation during the load cycle, hence, the rest of the load shall be supplied by the diesel generator.Hybrid power systems based on new and renewable energy sources, especially wind energy, are an effective option to solve the power-supply problem for remote and isolated areas far from the grids Combining two or more generating technologies such as wind and diesel creates a hybrid power system. For remote locations, far from the public power grid, this is an interesting alternative for self-sufficient power supply. If the wind conditions are good wind Diesel hybrids can usually provide electricity at the lowest cost for such places. The scope of the project is to design a station of hybrid system (wind turbine/ diesel generator) for a location (Soba, Khartoum) that provides sufficient power for a predetermined load. The reason why diesel generation is used is that the generation from wind turbines is not constant, which leads to is inefficient generation during the load cycle, hence, the rest of the load shall be supplied by the diesel generator. In order to generate from wind turbine; wind speed must be known for the location of generation, hence, the output power of the turbine. In order to achieve this, load was estimated for every month in the year. Next, wind speed was monitored and tabulated for every month of the year, as well. Hence, calculations were carried out to evaluate the output power of the wind turbine. If there the wind generation wasn't sufficient, the diesel unit shall compensate and keep the load supplied. For the purpose of power factor correction, a capacitor was included in the design Design was carried out and also simulation for this design for a certain study case using ETAP software for power system analysis for the sake of verification. The results were as expected and were quite satisfactory
Control of Power Generation Steam
No full textIn this project the steam of boiler in steam power plant consisting of four steam generators and four turbines was automatically controlled. The controlled variables were the water level in the boiler drum, the steam temperature (pressure) and the fuel-air ratio. These controlled variables were cascaded with the manipulative fuel flow rate and inlet water flow rate variables.In this study the steam of boiler in steam power plant consisting of four steam generators and four turbines was automatically controlled. The controlled variables were the water level in the boiler drum, the steam temperature (pressure) and the fuel-air ratio. These controlled variables were cascaded with the manipulative fuel flow rate and inlet water flow rate variables. The boiler drum level was paired with feedwater flow rate and the steam temperature was paired and cascaded with the fuel flow rate hoping that these pairings would give minimum interactions. Various types of controllers were tested; these were P, PI and PID. The control systems were tuned through Ziegler-Nichols and Routh Hurwitz techniques. The stability of the systems was investigated by Bode, Nyquist and Root locus stability criterions, and the most stable configuration was recommended
CAN Bus Servomotor Control
No full textThe main objective of this project is to implement monitoring and control system
for a DC-motor unit using the CANBUS protocol, where the monitoring and control
device is a PC.Generally any control system can be classified as open-loop or close-loop
{feedback}. The most common type of control systems used in process and security
control is the feedback control since. Feedback control is implemented by making a
continuous monitoring of the controlled output in order to generate a control signal
causing the system to move towards the desired operating point. The need of continuous
monitoring makes it necessary to introduce standard models for communication between
system components {controllers, sensors, actuators}. One of these communication
protocols is the Controller Area Network protocol {CANBUS} which we introduce in
this project. This project aims to built monitoring and control system for a DC servomotor
machine using the CANBUS protocol
RFID ASSET TRACKING SYSTEM
No full textThis project aims to design a system for asset tracking and locating. This system include: Design Implementation of a reader device that uses RFID technology to read the information of the asset’s tag. Use Ethernet network to transmit the data collected by the reader to the server.Being able to effectively and efficiently locate assets is essential for many entities (e.g. hospitals, manufacturing floors and warehouses). In order to utilize limited budget and resources efficiently, accurate locating or tracking is required in many fields. In this thesis, we will focus on how to locate an item using RFID in real time indoor tracking mechanism. The purpose of using RFID is to minimize the searching time, effort, and cost. Electronic tag is attached for each asset, where It’s information is pre-inserted into the system through user interface. The tag reader is composed of RFID sensor, microcontroller, and serial-to-Ethernet chip. The RFID sensor reads the serial number of the tag, within the given range, through radio waves then it passes the data serially to the MCU, which will transmit it through SPI to the serial-to-Ethernet chip. The Ethernet chip will convert the data to be transmitted through Ethernet network to remote server. When a tag number for any asset reaches the server, its associated information will be displayed through user interface and updated accordingly. Thus, this thesis presents design, implementation and testing of a system which use RFID and Ethernet for efficient asset location and tracking
Modeling and Simulation of an OSPF router
No full textThe objective of this project is to model and simulate OSPF router which will provide a
routing protocol to be used in networks. We use OSPF routing protocol because of its advantages
over all other routing protocols. The routing protocol should be capable of dealing with the
incoming traffic in proper way in addition to its ability to find the route paths.Communication Networks continues to evolve and the demand for a High-Speed Network infrastructure has been growing at an alarming rate. The routing protocol used before was the distance-vector protocol which was consuming a long time and generate a lot of control traffic which minimizing the available bandwidth for transmission.
This gives rise to the need for other routing protocol. The new link state routing protocol was extensively instrumental and monitored, and it was found to meet quite stringent performance goals, consuming less than 1 percent of link bandwidth for control traffic and less than 2 percent of router CPU for routing calculations, while responding to network changes at an average of less than 100ms.
The purpose of this project is to modelling and simulation of an Open Shortest Path First (OSPF) router, which is a link state protocol uses Dijkstra algorithm to find the shortest path from each router to each other routers in the same autonomous system. We have successfully write and implement a program that allow the programmer to determine the model of its network and then uses Dijkstra algorithm to calculate the shortest paths for each router and constructing the routing table for each router and also control the incoming traffic
Design and implementation of SmartParking System
No full textThe aim of this project to use a Proteus program to design and implement the Smart Parking System in University of Khartoum. To using sensors and microcontroller to record and transmit available parking spaces to the patron. To use a Variable Message Display (VMD) to provide patrons with available parking spaces.The SmartParking System is an in-vehicle parking meter, designed to take the hassle out of park, all this will happen through information collected about a suitable parking space availability and the coordination for drivers in order to guide them to the vacancy parking spots. SmartParking has intended to save time and effort of finding an empty parking spot. It combines hardware, software and data communication to manage a parking area. Available parking spaces have recorded and transmitted to the patron. The Closed Circuit Television (CCTV) video cameras and sensors have used to monitor the parking lot and update the database of available vacant parking spots. A Variable Message Display (VMD) has used to provide patrons with available parking spaces
POWER ELECTRONIC INVERTER CIRCUITS
No full textThis project aims to design an inverter circuit using PWM technology because of its
advantageous over others technologies.An inverter has the capability to convert the DC power into AC power that is useful for
generating equipment like household items, computers, power tools, etc.
This project aims to design an inverter circuit using PWM technology because of its
advantageous over others technologies.
The project objectives had been met successfully initially by illustrating the concept of
power inversion using a simple inverter circuit, then the PWM technology was clearly
demonstrated and PWM signals were generated using ATmega32 Microcontroller. The designs
of single-phase and three-phase inverters were successfully implemented by means of software
simulation