Research Symposium-2016

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Browsing Research Symposium-2016 by Subject "Automation"

Now showing 1 - 8 of 8
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    Automated Oil Pumping System for Sewing Machines
    (Uva Wellassa University of Sri Lanka, 2016) Jayasundara, J.M.S.M.B.; Samanthilake, U.D.
    Various types of sewing machines are available in the apparel industry. On the surface of such a machine, there is a movable contact that touches with any other point, which need to be lubricated. Different amounts of lubricant oil are carried from the oil bath of a sewing machine and this oil should be changed time to time and usually that is done by mechanics manually. The manual way of the oil changing is a time consuming task and may require some special skills. An automated oil changing system such as implemented in this research has the ability to overcome the issue. This system consists of an oil filling system that can be operated with push buttons on a panel, as the inputs. The Arduino platform acts as the control unit while an oil pump is considered as the output. As a feature of this automated oil changing system, the oil bath can be filled automatically by pressing the buttons according to the type of the sewing machine. Different buttons available on the system enable the users to select the appropriate type of sewing machines. When the relevant push button is being pressed, input signal is received by the Arduino. The oil pump will turn on through the relay device with respect to the controlling program that has been uploaded to the Arduino. After filling the oil bath to the standard level, oil pump will turn off automatically. By using the automated system, the efficiency of the sewing machine maintenance process has significantly improved. As a result of this study, the best results were obtained in double needle machine based on the factorial analysis with multiple comparisons. Keywords: Arduino, Sewing machine, Sewing machine maintenance
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    Development of Leader Follower Robot
    (Uva Wellassa University of Sri Lanka, 2016) Liyanapathirana, B.C.; Wanniarachchi, W.K.I.L.
    This paper discusses the development of a leader follower robot based on visual tracking. In leader follower approach, one robot acts as a leader whose motion defines the path for the follower robots. The entire follower robots use the path defined by the leader to achieve a defined task or to attain a certain goal. The advancement of the technology of video acquisition has made devices better and cost-effective. Thereby, many applications those will effectively utilize digital video can be identified. Compared to still images, video sequences provide more information about how objects and scenarios change over time. The strategy copes with the tracking and following of a single object in a sequence of frames and the co-ordinate of the object can be determined. The object tracking video is recorded using a wireless camera and then transmitted into a computer. Then using the software artifact named Roborealm', the video is processed and analysed, hence the object can be detected and coordinates of the detected object is calculated. The object is tracked by plotting a square bounding box around it in each frame. Co-ordinates of the centroid of that bounding box is determined and those coordinates are used for an algorithm which was specifically developed for the motion control of the follower robot. Then the commands related to the motion of the leader robot are transmitted to the follower robot enabling it to follow the leader robot. Keywords: Leader Follower, Video sequencing, Wireless, Tracking
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    Home Automation System
    (Uva Wellassa University of Sri Lanka, 2016) Somasiri, K.G.H.A.; Wanniarachchi, W.K.I.L.
    Home automation refers to the automatic and electronic control of household features, activities, and appliances. Some components of an automated home may include the centralized control of security locks on doors and gates, appliances, windows, lighting, surveillance cameras and HVAC systems (Heating, Ventilation and Air Conditioning). Most existing advanced home automation systems require a big and expensive change of infrastructure since majority of them rely on wired communication. So it is required to change the entire wiring system of the house or wire again for the new home automation system. Obviously, wireless systems may be reduce the burden. And most of the existing systems are only capable of turn ON and OFF the home appliances but do not facilitate to see the states of the load in real time. The main objectives of the research are to design and implement a home automation system that is capable of controlling most of the house appliance wirelessly through a user-friendly web interface and indicate the status of them individually while eliminating the necessity of re- wiring. Any PC or mobile that has internet facility can be used to control it. And also to show the real time status on the web page. In addition, this home automation system is capable of turn on and off lights, control different appliance connected to wall plugs, door locking and unlocking, Shading Level Control and monitor the status. Central control unit required to be connected to the internet all the time since a web server is run by an Arduino Ethernet shield attached to it. All the sub-units are connected to main unit wirelessly via RF transceivers and they communicate both directions. The system was successfully implemented and tested. Keywords: Automation, Surveillance, HVAC, Ethernet shield, Transceivers
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    Impact of Online Banking Service Quality on Customer Satisfaction
    (Uva Wellassa University of Sri Lanka, 2016) Madhushani, B.G.T.; Fernando, P.I.N.
    This study aims to investigate the impact of online banking service quality on customer satisfaction. The different dimensions such as efficiency, reliability, responsiveness, fulfilment and privacy can be identified as determinants of service quality. The research objectives aim to find, the relationship, most influential factor withal relative contribution of each influential factor of online service quality towards customer satisfaction. All online banking users of Badulla district were selected as population of the research. 60 online banking customers of five banks in Badulla, selected as the sample of the research. Multiple regression model and Correlation coefficient analysis were used to analyse the research. Research findings were emphasized that 66% of the total satisfaction is influenced by the five selected service quality dimensions withal findings of the research, Efficiency, Responsiveness, Fulfilment, and Privacy shows positive relationship with Customer Satisfaction. Positive relationship between Reliability Variable and Customer satisfaction is not significant under this study. Banks should pay more attention to improve speed, high security applications for protect customer Privacy. Keywords: Online banking, Service quality, Customer satisfaction.
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    Real Time Traffic Light Time Analyzer
    (Uva Wellassa University of Sri Lanka, 2016) Indika, I. K. K.; Thambawita, D.R.V.L.B.
    In urban arrears of all over the world, traffic lights are used to manage the traffic. However, congestion becomes worst and needed to increase the performance of traffic lights by focusing on increasing the capacity of transactions and minimizing the waiting time. By this research, a new fuzzy rule set is proposed for the cross and three-way (T-junction) junctions considering a number of vehicles on a road, time to complete a cycle, waiting time of the each road and the traffic condition of the road. The image processing technique is used to get dynamic data. The fuzzy logic system has been implemented to get decisions dynamically for the cycle time, green color light time and time to cross vehicle by analysing the waiting times using fuzzy outputs and other dependent data. MATLAB is used for fuzzy logic and image processing to generate unique output for each traffic condition. The performance of the new system is evaluated by comparing the waiting times in between current cycles and fuzzy cycles. The results obtained shows that the system has almost higher performance (Between 13% and 47%) and it is increased when congestion is low. Use of dynamic time cycles according to vehicle velocity causes to increase the performance of it. It was identified that performance is higher when using short cycle times for less congestion while medium cycle time is preferred for high congestion. The output results show that fuzzy system is better than the existing system because its waiting time near junctions is less than fixed cycle method. Keywords: Traffic congestion, Fuzzy logic, Delay estimation, Real time
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    Simultaneous Wall Following and Map Building Robot
    (Uva Wellassa University of Sri Lanka, 2016) Withanawasam, D.M.; Wanniarachche, W.K.I.L.
    In this research, an autonomous differential drive mobile robot is proposed to follow the wall on its right side, while avoiding any obstacles on its way and builds the map of the moved path. The importance of the study is that it can be used in a quarantined building where it is unable to send a human directly, but is important to send some device to collect information about the area. The proposed method can also be used to replace prevailing automated guided vehicle (AGV) system. The wall following algorithm is based on the method that a person find the way in a dark building. Even though the person cannot see, the person can understand the surrounding in the hand distance by touching the wall and then the person pursues to follow the wall. The robot platform includes three ultrasonic range sensors, microcontroller board, a motor driver and a power source. The programmed microcontroller gathers the distance information of surrounding area through the ultrasonic sensors and control the individual motor speed and direction according to the given logic. The speed of the individual motor is controlled by the pulse width modulation (PWM) signals. The developed robot communicates with nearby computer via a Bluetooth connection to gather the relevant information such as ultrasound sensor and wheel motion data. The recorded data are used to map the path of indoor mobile for the robot navigation. Keywords: Wall following, Mobile robot mapping, Microcontroller
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    Two-Wheeled Self Balancing Robot
    (Uva Wellassa University of Sri Lanka, 2016) Samarathunga, S.M.B.P.B.; Wanniarachchi, W.K.I.L.
    This paper presents a method to design and control a two-wheeled self-balancing robot by focusing on hardware description, Complimentary filter algorithm, system modelling and Proportional-Integral-Derivative (PID) back stepping controller design. In the system, signals from the digital Gyro sensor are filtered by a Complimentary filter before being fed to the Proportional-Integral-Derivative back stepping controller. The objectives of the proposed controller is to stabilize the robot while trying to keep the motion of robot to any direction. By experimenting, the values of Proportional-Integral-Derivative parameters such as, Proportional Gain Constant, Derivative Gain Constant and Integral Gain Constant have been obtained and applied for the Arduino board. The special software was complied to convert the digital data from the accelerometer to an acceleration magnitude vector. The magnitude is then compared to a predetermined mathematical function to infer the angle of tilt of the platform. The angle of tilt is then converted to angle of rotation for the gear motors to act on. Complimentary filter is used to filter the gyro data in order to reduce noise, drift, and horizontal acceleration dependency, for the fast estimation of angle. It was noticed that this approach promises much less lag than the low-pass filter alone, and not very processor-intensive. Tuning for Proportional-Integral-Derivative controller is depending upon the physical properties of the robot and the battery power, due to those reasons tuning the controller becomes a difficult task. Experimental results shows that the platform performed as expected. The two-wheeled robot was able to move towards any direction while keeping its balance. Keywords: Complimentary filter, Gyro sensor, Arduino board, Accelerometer, Proportional gain constant
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    Widespread Emergency Response System in Colombo District
    (Uva Wellassa University of Sri Lanka, 2016) Tamari, H.V.; Ihalagedara, I. K. K. B.
    Majority of fire emergency and rescue services struggle with the management due to the absence of efficient systems. In the current process of fire emergency and rescue management service, several issues have been identified. Therefore, the present study is suggested to overcome identified inconveniences by developing an efficient & effective automated system to manage time, resources and make correct & timely decisions. Data was collected from the both people who get and don't get the service from this department. Another new set of issues that contains in the current service were identified through the collected data. A method; Widespread Emergency Response System was developed to reengineer the current process using information technology. The objective of the research was to measure the effectiveness of the widespread emergency response system for Fire Rescue and Emergency Service. The literature survey was carried out in order to identify existing methods of controlling emergencies and understand their positive and negative features. Identified factors were applied to the proposed system. The system was developed with three mobile applications and controlled web application. A system which provides facilities to send emergency request with selecting emergency type was developed and after controlling process start user could view the route map and contact the service center. Control room officer assign the task through the system and allocated officer can view their task through the application. The system architecture was designed. The system was functional wise tested according to the test cases created. By using project network techniques, the collected data was analyzed from both current and developed systems. Overall and average values were used to determine more effective method. The results indicated that developed system has shown the less value. This system can be further developed and a method can be developed to find the location from the normal phone. Keywords: Rescue, Automated system, Project network techniques