Research Publications
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Item Embargo A Non-Intrusive and Cost-Effective IoT-Based System for Smart Monitoring of Power Consumption(Institute of Electrical and Electronics Engineers Inc., 2025) Jayasooriya, S; Malasinghe, LElectrical utility companies in developing countries traditionally employ non-smart energy meters to measure their users' electricity consumption, with billing conducted on a monthly or quarterly basis. However, there is an emerging market, especially in developing countries, for customers to measure their day-To-day energy usage, similar to how they track their internet data consumption. This project aims to contribute to addressing this demand by designing and developing a non-intrusive and cost-effective ESP-32-based optical measuring device that can autonomously and accurately take imagery measurements from electrical utility meters, carry out cloud-based extraction of data using optical character recognition and transmission to an interactive web application for users to access their current and historical electricity usage records remotely in a more informative way.Publication Embargo Enriching Resilience in Smart Manufacturing: Critical Analysis of Industry 4.0 Technologies on Sustainable Production Process(SLIIT, Faculty of Engineering, 2024-10) Karunarathne, P L D N; Gamage, H C T; Kawya, M V TIntegration of Industry 4.0 technologies in smart manufacturing in the context of sustainable production processes has opened new paths to enrich resilience. This research aims at how Industry 4.0 technologies can be applied to smart manufacturing which is empowered by sustainable production processes in order to achieve maximum resilience. Through a broad literature review, key theories, concepts, and practical and theoretical studies related to smart manufacturing, resilience, and sustainability of production processes are examined. And the theme itself drives to establish a couple of research questions in order to find solutions and derive research inventions as to how Industry 4.0 technologies can enrich resilience in manufacturing and what sustainability implications arise from their adoption. And data gathering is been done using a simple questionnaire and analyzed using an extensive as well as a comparative method after considering how production processes have been changed before and after applying Industry 4.0 technologies. Overall, Industry 4.0 not only creates a more efficient and higher quality production process, but it also enables the things like predictive and preventive maintenance and upgrades, which results in lower downtime and less capital expenditure over time.Publication Embargo ARCSECURE: Centralized Hub for Securing a Network of IoT Devices(Springer, Cham, 2021-07-06) Yapa Abeywardena, K; Abeykoon, A. M. I. S; Atapattu, A. M. S. P. B; Jayawardhane, H. N; Samarasekara, C. NAs far as it is considered, IoT has been a game changer in the advancement of technology. In the current context, the major issue that users face is the threat to their information stored in these devices. Modern day attackers are aware of vulnerabilities in existence in the current IoT environment. Therefore, securing information from being gone into the hands of unauthorized parties is of top priority. With the need of securing the information came the need of protecting the devices which the data is being stored. Small Office/Home Office (SOHO) environments working with IoT devices are particularly in need of such mechanism to protect the data and information that they hold in order to sustain their operations. Hence, in order come up with a well-rounded security mechanism from every possible aspect, this research proposes a plug and play device “ARCSECURE”.Publication Open Access IoT Focus on Security Using Blockchain(researchgate.net, 2021-05) Wijayarathne, S. NIn the area of information technology, cyber security plays a significant role. One of the biggest challenges in the present day is the privacy and security of the information we have. ‘Cybercrimes’ is the first thing that comes to mind whenever we think about cybersecurity. In order to prevent these cybercrimes, various governments and companies are taking many measures. One of the solutions that have come up for these cybercrimes is the usage of Blockchain. The introduction and implementation of the Industrial Internet of Things (IIoT) have started a worldwide insurgency. The volume and assortment of information that is gathered and prepared in businesses are consistently expanding because of the boundless acknowledgment of current advances such as the Internet of Things (IoT). With the exponential increment of IIoTassociated devices has also incremented the number of threats of security and privacy breaches. Disadvantages such as low processing power, limited capacity abilities, and poor productivity standards are often found on IoT devices. In this specific situation, blockchain innovation can assist with taking out the security weaknesses looked at by the IIoT frameworks and gives broad assurance from information robberies, cyberattacks, and information debasement. Blockchain, with its disseminated design, offers shared systems administration and empowers auditable and straightforward exchanges. This report explores the concept of the Internet of Things (IoT), focusing on security by the usage of Blockchain. We further explore the evolution of the IoT security and the evolution of Blockchain, the future development of the IoT devices with the security of Blockchain, under the topic of IoT focus on security using Blockchain.Publication Embargo E-tongue -A smart tool to predict safe consumption of groundwater(IEEE, 2020) Alahakoon, A. M. P. B; Nibraz, M. M; Gunarathna, P. M. S. S. B; Thenuja, S; Kahandawaarchchi, K. A. D. C. P; Gamage, N. D. U— In Sri Lanka, reportedly 59% of the population depends on water from natural sources. The government has taken necessary action to provide a quality water, there has always been a need to educate people about the importance of maintaining water quality, the importance of using betterquality water, and necessary precautions to be taken to avoid the Chronic Kidney Disease (CKD). Prior studies of the problems that has to induce to implement an E-Tongue: a smart device to predict safe consumption of groundwater, which is identify the quality of a groundwater in real-time by designing an Internet of Things (IoT) device to read the value of water quality parameters and GPS to fetch location which will be then transferred to cloud environment for an easy access by the machine learning model to process and identify the Water Quality Index (WQI). It will then predict the water quality parameter levels that could be changed in the future and check the possibility of CKD. All the outputs will be finally displayed via the mobile application with 73% accuracy.Publication Open Access Gesture driven smart home solution for bedridden people(Association for Computing Machinery, 2020-09-21) Jayaweera, N; Gamage, B; Samaraweera, M; Liyanage, S; Lokuliyana, S; Kuruppu, TConversion of ordinary houses into smart homes has been a rising trend for past years. Smart house development is based on the enhancement of the quality of the daily activities of normal people. But many smart homes have not been designed in a way that is user friendly for differently-abled people such as immobile, bedridden (disabled people with at least one hand movable). Due to negligence and forgetfulness, there are cases where the electrical devices are left switched on, regardless of any necessity. It is one of the most occurred examples of domestic energy wastage. To overcome those challenges, this research represents the improved smart home design: MobiGO that uses cameras to capture gestures, smart sockets to deliver gesture-driven outputs to home appliances, etc. The camera captures the gestures done by the user and the system processes those images through advanced gesture recognition and image processing technologies. The commands relevant to the gesture are sent to the specific appliance through a specific IoT device attached to them. The basic literature survey content, which contains technical words, is analyzed using Deep Learning, Convolutional Neural Network (CNN), Image Processing, Gesture recognition, smart homes, IoT. Finally, the authors conclude that the MobiGO solution proposes a smart home system that is safer and easier for people with disabilitiesPublication Embargo Air Visio: Air Quality Monitoring and Analysis Based Predictive System(2019 1st International Conference on Advancements in Computing (ICAC), SLIIT, 2019-12-05) Dissanayaka, A.D.; Taniya, W.A.D.; De Silva, B.P.A.N.; Senarathne, A.N.; Wijesiri, M.P.M.; Kahandawaarachchi, K.A.D.C.P.Sri Lanka is facing a serious air pollution problem that severely impacts the daily life of every Sri Lankan. The main source of ambient air pollution in Sri Lanka is vehicular emissions. A methodology to monitor the air quality in real-time with an overall coverage of Sri Lanka, and automatically process these huge data to identify air quality levels in a specific area is now becoming a timely research topic. An air quality monitoring and analysis based predictive system is proposed to monitor the ambient air quality, provides the best route with minimum polluted air, maps the heatmaps to identify the current air quality of an area easily and predict the future air quality of each area. The prototype was implemented by hierarchically deploying two different gas sensors, an Arduino Uno board and a wifi module, to implement in open spaces between smart buildings, and transfers the sensor data back to the information processing center by using IoT technology for real-time display. The information processing center stores real-time information which is collected from the sensors to the database. By reading sensor data stored in the database, the front-end system draws real-time, accurate air quality levels included maps and predicts the less polluted routes and the air quality level over an area. Further, an energy harvesting system is also presented for the power consumption of the device. A route is suggested in an accuracy of 70% from this system. The final product provides a low cost, highly portable and easily maintainable system for the users.Publication Embargo Water Quality Index Based Prediction of Ground Water Properties for Safe Consumption(2020 2nd International Conference on Advancements in Computing (ICAC), SLIIT, 2020-12-10) Alahakoon, A.M.P.B.; Nibraz, M.M.; Gunarathna, P.M.S.S.B.; Thenuja, T.; Kahandawaarchchi Faculty of Computing Sri Lanka Institute of Information Technology, K.A.D.C.P. Malabe, Sri Lanka; Gamage, N.D.U.Water as one crucial element for the survival of human beings is necessary to be handled with care. With a 59% of the Sri Lankan population depending themselves on this indispensable element, the authorities and the people must heed the importance of safe consumption to avoid severe consequences like Chronic Kidney Disease (CKD). In an attempt to address this social predicament, a smart device was fashioned as an initiative to predict safe consumption of groundwater and, to oblige and upskill the users to identify the quality of a groundwater sample in real-time. With the inclusion of machine learning techniques, the implementation was done by predicting the Water Quality Index (WQI) which is a single numeric index that mirrors the overall quality of any water sample, with an accuracy of 97.82 % . In addition, two more serviceable functionalities to predict possibilities of CKD outbreak and forecasting water quality parameters were also implemented with accuracies of 76.99% and 92% respectively. The sole of this research relies on the hardware device that embeds a set of sensors which accompanies the individual functionalities. The readings and outputs will be displayed through the mobile application which is real-time and of high performance with a friendly user-interface.Publication Embargo IoT Based Sign Language Recognition System(2020 2nd International Conference on Advancements in Computing (ICAC), SLIIT, 2020-12-10) Punsara, K.K.T.; Premachandra, H.H.R.C.; Chanaka, A.W.A.D.; Wijayawickrama, R.V.; Abhayasinghe, N.; De Silva, R.Sign language is the key communication medium, which deaf and mute people use in their day - to-day life. Talking to disabled people will cause a difficult situation since a non-mute person cannot understand their hand gestures and in many instances, mute people are hearing impaired. Same as Sinhala, Tamil, English, or any other language, sign language also tend to have differences according to the region. This paper is an attempt to assist deaf and mute people to develop an effective communication mechanism with non-mute people. The end product of this project is a combination of a mobile application that can translate the sign language into digital voice and loT-enabled, light-weighted wearable glove, which capable of recognizing twenty-six English alphabet, digits, and words. Better user experience provides with voice-to-text feature in mobile application to reduce the communication gap within mute and non-mute communities. Research findings and results from the current system visualize the output of the product can be optimized up to 25 % -35 % with an enhanced pattern recognition mechanism.Publication Embargo A Secure Corroboration Protocol for Internet of Things (IoT) Devices Using MQTT Version 5 and LDAP(IEEE, 2021-01-13) Vithanage, N. N. N; Thanthrige, S. S. H; Paththini Kapuge, M. C. K; Malwenna, T. H; Liyanapathirana, C; Wijekoon, J. LThe world is now shifting from Industry 4.0 to Industry 5.0 enabling the automation of the human livelihood by using Internet of Things (IoT). IoT can be attributed as a network that connects many sensor devices to collect data to provide automated smart environments. However, with a huge number of connected devices already deployed worldwide and organizations resorting to IoT development services more frequently because IoT security issues remain a matter of concern. One of the main identified reasons is IoT devices possess limited memory capacity, energy, processing which cause difficulties to run complex security algorithms, hindering the security services such as privacy and authentication, although those are crucial factors of IoT services. Hence, the adoption of adequate security and authentication techniques are necessary for a broad IoT deployment. To this end, this study proposes an authentication platform to improve the security and efficiency of data transmission between the IoT devices using LDAP and MQTT technologies. The implementation complies with IEEE 1451 standardization to uplift the MQTT with the help of LDAP features and GZip compression.