Pub Date : 2016-04-05DOI: 10.1109/MERCON.2016.7480116
A. Abeysinghe, S. Abeysiriwardena, Roshan Nanayakkarawasam, Walallawita Wimalsiri, T. Lalitharatne, Salinda Tennakoon
The foam mould making for Unmanned Aerial Vehicles should be efficient and accurate to improve research and manufacturing. Hot wire cutting is a widely used method in foam cutting. In hot wire cutting, accuracy and quality of the foam cut mainly depends on the variable cutting parameters which affect the cutting process. To perform a proper cut with required quality the cutting parameters should be set precisely and accurately. This research is done to identify the variations and inter dependency of cutting parameters. It is important to estimate appropriate cutting parameter values before the actual cut. The results of this research aid to improve the hot wire foam cutting by solving the limitations and drawbacks to select best cutting parameters of the Computer Numerically Controlled machine which is in progress.
{"title":"Development of a numerically controlled hot wire foam cutting machine for wing mould construction","authors":"A. Abeysinghe, S. Abeysiriwardena, Roshan Nanayakkarawasam, Walallawita Wimalsiri, T. Lalitharatne, Salinda Tennakoon","doi":"10.1109/MERCON.2016.7480116","DOIUrl":"https://doi.org/10.1109/MERCON.2016.7480116","url":null,"abstract":"The foam mould making for Unmanned Aerial Vehicles should be efficient and accurate to improve research and manufacturing. Hot wire cutting is a widely used method in foam cutting. In hot wire cutting, accuracy and quality of the foam cut mainly depends on the variable cutting parameters which affect the cutting process. To perform a proper cut with required quality the cutting parameters should be set precisely and accurately. This research is done to identify the variations and inter dependency of cutting parameters. It is important to estimate appropriate cutting parameter values before the actual cut. The results of this research aid to improve the hot wire foam cutting by solving the limitations and drawbacks to select best cutting parameters of the Computer Numerically Controlled machine which is in progress.","PeriodicalId":184790,"journal":{"name":"2016 Moratuwa Engineering Research Conference (MERCon)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122293470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-05DOI: 10.1109/MERCON.2016.7480120
U. Premarathne
Existing continuous authentication models use a fixed set of attributes and do not consider the application specific requirements and associated vulnerabilities in their selection. Selecting appropriate attributes for continuous authentication is essentially a multi-criteria decision making process. Existing multi-criteria decision making models are less competent in providing a preference for each attribute in a set of possible attributes. In this paper we propose a utility based approach: PROAASEL, prospect theory based continuous authentication attribute selection model. The main assumption of our approach is the associated risks for each attribute are pre-defined in terms of known vulnerabilities. The main advantage of our model is the ability to select the attributes based on application specific risk characterizations. We have evaluated PROAASEL using CVE data from [1]. Furthermore, we compared the selection method with existing MCDM techniques TOPSIS and N-model for plausible application scenarios. The results reveal that PROAASEL is more expressive and offer more reliable selection when the associated risks are fixed.
{"title":"PROAASEL: Prospect theory based continuous authentication attribute selection model","authors":"U. Premarathne","doi":"10.1109/MERCON.2016.7480120","DOIUrl":"https://doi.org/10.1109/MERCON.2016.7480120","url":null,"abstract":"Existing continuous authentication models use a fixed set of attributes and do not consider the application specific requirements and associated vulnerabilities in their selection. Selecting appropriate attributes for continuous authentication is essentially a multi-criteria decision making process. Existing multi-criteria decision making models are less competent in providing a preference for each attribute in a set of possible attributes. In this paper we propose a utility based approach: PROAASEL, prospect theory based continuous authentication attribute selection model. The main assumption of our approach is the associated risks for each attribute are pre-defined in terms of known vulnerabilities. The main advantage of our model is the ability to select the attributes based on application specific risk characterizations. We have evaluated PROAASEL using CVE data from [1]. Furthermore, we compared the selection method with existing MCDM techniques TOPSIS and N-model for plausible application scenarios. The results reveal that PROAASEL is more expressive and offer more reliable selection when the associated risks are fixed.","PeriodicalId":184790,"journal":{"name":"2016 Moratuwa Engineering Research Conference (MERCon)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130836186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-05DOI: 10.1109/MERCON.2016.7480145
R. S. M. Jothimuni, H. Wijerathne, C. Yapa, D. Wijethunga, J. R. Lucas, P. D. de Silva
Protection schemes are mandatory for the safety and reliability of power systems operations. A Power System Simulator has been built as a teaching tool in order to provide a clear picture of the system, including generation, transmission and distribution, for the Electrical Engineering undergraduate. The simulator is based on using real 11kV vacuum circuit breakers as the base of operations and is a voltage scaled down version of a power system. The implementation of a distribution system at 400V and the improvements to the controllability of the motor generator set which models generation in one area of the simulator are discussed. A PSCAD (Power System Computer Aided Design) simulation is presented to validate the physical model built. The Implementation and co-ordination of protection schemes for an interconnected network is a challenging task. Thus the paper discusses the implementation of a bus bar protection scheme and the integration of protection aspects with the overall system.
{"title":"Power System Simulator- a teaching tool protection integration","authors":"R. S. M. Jothimuni, H. Wijerathne, C. Yapa, D. Wijethunga, J. R. Lucas, P. D. de Silva","doi":"10.1109/MERCON.2016.7480145","DOIUrl":"https://doi.org/10.1109/MERCON.2016.7480145","url":null,"abstract":"Protection schemes are mandatory for the safety and reliability of power systems operations. A Power System Simulator has been built as a teaching tool in order to provide a clear picture of the system, including generation, transmission and distribution, for the Electrical Engineering undergraduate. The simulator is based on using real 11kV vacuum circuit breakers as the base of operations and is a voltage scaled down version of a power system. The implementation of a distribution system at 400V and the improvements to the controllability of the motor generator set which models generation in one area of the simulator are discussed. A PSCAD (Power System Computer Aided Design) simulation is presented to validate the physical model built. The Implementation and co-ordination of protection schemes for an interconnected network is a challenging task. Thus the paper discusses the implementation of a bus bar protection scheme and the integration of protection aspects with the overall system.","PeriodicalId":184790,"journal":{"name":"2016 Moratuwa Engineering Research Conference (MERCon)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131197549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-05DOI: 10.1109/MERCON.2016.7480130
H. Heendeniya, R. Ruwanthika, A. G. Buddhika P. Jayasekara
Historically extensive green roofs were designed for natural precipitation with a plant selection focusing on hardy succulents such as sedums that can survive harsh, water stressed conditions. Although this seems a convenient solution to establish and maintain a green roof system, at a much broader level this does not optimize the functions and performance of the green roof. In this paper the influence of irrigation on green roof functions and performance is presented for an extensive green roof by an extensive literature study. Green roof energy saving potential under Sri Lankan climatic conditions is significant. The average water retention of green roof substrate under different climatic zone conditions in Sri Lankan context is simulated with hypothetical twelve extensive green roof types. Results justify the artificial irrigation requirement and provide key directions to develop water balance model considering locational factors to maintain set soil moisture target.
{"title":"Potential for improving green roof performance through artificial irrigation","authors":"H. Heendeniya, R. Ruwanthika, A. G. Buddhika P. Jayasekara","doi":"10.1109/MERCON.2016.7480130","DOIUrl":"https://doi.org/10.1109/MERCON.2016.7480130","url":null,"abstract":"Historically extensive green roofs were designed for natural precipitation with a plant selection focusing on hardy succulents such as sedums that can survive harsh, water stressed conditions. Although this seems a convenient solution to establish and maintain a green roof system, at a much broader level this does not optimize the functions and performance of the green roof. In this paper the influence of irrigation on green roof functions and performance is presented for an extensive green roof by an extensive literature study. Green roof energy saving potential under Sri Lankan climatic conditions is significant. The average water retention of green roof substrate under different climatic zone conditions in Sri Lankan context is simulated with hypothetical twelve extensive green roof types. Results justify the artificial irrigation requirement and provide key directions to develop water balance model considering locational factors to maintain set soil moisture target.","PeriodicalId":184790,"journal":{"name":"2016 Moratuwa Engineering Research Conference (MERCon)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124258985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-05DOI: 10.1109/MERCON.2016.7480142
C. Sanjei, L. D. De Silva
This paper focuses the development of a three dimensional numerical model to simulate the behaviour of geocell reinforced sand using PLAXIS 3D. Numerical modeling of the geocell has been an immense challenge due to their curved shape. Most of researchers used equivalent composite approach (ECA) to model the geocells. However, the composite method has a number of limitations, including the disregard of the effect of shape. The shape has a major influence in stress distribution. Hence a realistic model approach is essential to simulate the same experimental condition in numerical analysis. In this study, a 3D cad model was imported to PLAXIS 3D and modeled using geogrid structural element. Then the model was validated using experimental results where the results satisfied each other. Thereafter the depth that gives the highest carrying capacity was estimated using numerical and experimental result, which was found at depth(U) /width(B)<;0.5 for a square pad footing.
{"title":"Numerical modelling of the behaviour of model shallow foundations on geocell reinforced sand","authors":"C. Sanjei, L. D. De Silva","doi":"10.1109/MERCON.2016.7480142","DOIUrl":"https://doi.org/10.1109/MERCON.2016.7480142","url":null,"abstract":"This paper focuses the development of a three dimensional numerical model to simulate the behaviour of geocell reinforced sand using PLAXIS 3D. Numerical modeling of the geocell has been an immense challenge due to their curved shape. Most of researchers used equivalent composite approach (ECA) to model the geocells. However, the composite method has a number of limitations, including the disregard of the effect of shape. The shape has a major influence in stress distribution. Hence a realistic model approach is essential to simulate the same experimental condition in numerical analysis. In this study, a 3D cad model was imported to PLAXIS 3D and modeled using geogrid structural element. Then the model was validated using experimental results where the results satisfied each other. Thereafter the depth that gives the highest carrying capacity was estimated using numerical and experimental result, which was found at depth(U) /width(B)<;0.5 for a square pad footing.","PeriodicalId":184790,"journal":{"name":"2016 Moratuwa Engineering Research Conference (MERCon)","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116122222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-05DOI: 10.1109/MERCON.2016.7480140
M. D. De Silva, M. Narayana
Cyclones are one of the most extensively used gas cleaning equipment in the industry. Current empirical model based cyclone designs and performance prediction have many limitations due to complex nature of the gas-solid flow field. Computational Fluid Dynamic (CFD) simulation could be useful to predict cyclone performance as an alternative approach. This paper represents a CFD simulation of a Lapple cyclone separator using OpenFOAM software. The flow field of cyclone was obtained by using Reynolds averaged Navier-Stockes equations combine with k-e closure model. Flow field pressure and velocity distribution were obtained from the simulation and they were compared with the literature to evaluate the model validity. Multiphase Particle in Cell (MPPIC) method was used for the particle modeling, in which particle interactions with other particles were represented by models. Tangential gas velocity profile, pressure drop and particulate collection efficiency of cyclone obtained from the model were comparable to experimental results in the literature. Optimum values for inlet gas-solid velocity and particulate loading rate for the Lapple cyclone were obtained by this analysis. Pressure drop variation with gas-solid inlet velocity which has been obtained by this analysis could be useful to minimize the energy requirement while maintaining the required collection efficiency.
{"title":"Analysis and derivation of optimum operating conditions of Lapple cyclone separator by using CFD","authors":"M. D. De Silva, M. Narayana","doi":"10.1109/MERCON.2016.7480140","DOIUrl":"https://doi.org/10.1109/MERCON.2016.7480140","url":null,"abstract":"Cyclones are one of the most extensively used gas cleaning equipment in the industry. Current empirical model based cyclone designs and performance prediction have many limitations due to complex nature of the gas-solid flow field. Computational Fluid Dynamic (CFD) simulation could be useful to predict cyclone performance as an alternative approach. This paper represents a CFD simulation of a Lapple cyclone separator using OpenFOAM software. The flow field of cyclone was obtained by using Reynolds averaged Navier-Stockes equations combine with k-e closure model. Flow field pressure and velocity distribution were obtained from the simulation and they were compared with the literature to evaluate the model validity. Multiphase Particle in Cell (MPPIC) method was used for the particle modeling, in which particle interactions with other particles were represented by models. Tangential gas velocity profile, pressure drop and particulate collection efficiency of cyclone obtained from the model were comparable to experimental results in the literature. Optimum values for inlet gas-solid velocity and particulate loading rate for the Lapple cyclone were obtained by this analysis. Pressure drop variation with gas-solid inlet velocity which has been obtained by this analysis could be useful to minimize the energy requirement while maintaining the required collection efficiency.","PeriodicalId":184790,"journal":{"name":"2016 Moratuwa Engineering Research Conference (MERCon)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125039255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-05DOI: 10.1109/MERCON.2016.7480167
S. Kajugaran, V. Weragoda
The modified asphalt is used to improve the performance of pavement when traffic loads are applied with changing environmental conditions. In this study, the bitumen was modified by adding Low Density Polyethylene as such as 2%, 4%, 6% and 8% of total bitumen content. The modification of bitumen was analysed under Fourier Transform Infrared Spectroscopy. These physical properties of modified bitumen samples were also investigated through conventional laboratories tests as such penetration test, softening point test and ductility test. The burning limestone, paddy husk ash and rubber dust were used as trial material to modify the asphalt with 1%, 2%, 3%, 4% and 5% of total aggregate content and Marshall Tests of asphalt samples were conducted with 4.6% bitumen content. The 3.2% of burning limestone was preferred to prepare for the asphalt mixture with optimum 6% Low Density Polyethylene content of modified bitumen. The Marshall Test was conducted to obtain the physical properties of modified asphalt mixture. The adhesion between aggregates and bitumen was analysed with bond mechanism which was confirmed that modified asphalt with burning limestone filler would be to increase the durability of pavements.
{"title":"Development of polymer modified asphalt using filler","authors":"S. Kajugaran, V. Weragoda","doi":"10.1109/MERCON.2016.7480167","DOIUrl":"https://doi.org/10.1109/MERCON.2016.7480167","url":null,"abstract":"The modified asphalt is used to improve the performance of pavement when traffic loads are applied with changing environmental conditions. In this study, the bitumen was modified by adding Low Density Polyethylene as such as 2%, 4%, 6% and 8% of total bitumen content. The modification of bitumen was analysed under Fourier Transform Infrared Spectroscopy. These physical properties of modified bitumen samples were also investigated through conventional laboratories tests as such penetration test, softening point test and ductility test. The burning limestone, paddy husk ash and rubber dust were used as trial material to modify the asphalt with 1%, 2%, 3%, 4% and 5% of total aggregate content and Marshall Tests of asphalt samples were conducted with 4.6% bitumen content. The 3.2% of burning limestone was preferred to prepare for the asphalt mixture with optimum 6% Low Density Polyethylene content of modified bitumen. The Marshall Test was conducted to obtain the physical properties of modified asphalt mixture. The adhesion between aggregates and bitumen was analysed with bond mechanism which was confirmed that modified asphalt with burning limestone filler would be to increase the durability of pavements.","PeriodicalId":184790,"journal":{"name":"2016 Moratuwa Engineering Research Conference (MERCon)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125269260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-05DOI: 10.1109/MERCON.2016.7480124
Y.V.A.C. Kumara, C. Wavegedara
Low-Density Parity check (LDPC) codes offer high-performance error correction near the Shannon limit which employs large code lengths and some iterations in the decoding process. The conventional decoding algorithm of LDPC is the Log Likelihood Ratio based Belief Propagation (LLR BP) which is also known as the `Sum-Product algorithm' which gives the best decoding performance and requires the most computational complexity and implementations with increased hardware complexity. Another simpler variant of this algorithm is used which is known as `min-sum algorithm' which reduces computational complexity as well as hardware complexity but with reduced accuracy. This paper analyzes the reason min-sum algorithm is more prone to errors when compared to the sum-product algorithm, and puts forward two improved algorithms which improve the performance of the min-sum algorithm with comparable algorithmic complexity.
{"title":"Improved LDPC decoding algorithms based on min-sum algorithm","authors":"Y.V.A.C. Kumara, C. Wavegedara","doi":"10.1109/MERCON.2016.7480124","DOIUrl":"https://doi.org/10.1109/MERCON.2016.7480124","url":null,"abstract":"Low-Density Parity check (LDPC) codes offer high-performance error correction near the Shannon limit which employs large code lengths and some iterations in the decoding process. The conventional decoding algorithm of LDPC is the Log Likelihood Ratio based Belief Propagation (LLR BP) which is also known as the `Sum-Product algorithm' which gives the best decoding performance and requires the most computational complexity and implementations with increased hardware complexity. Another simpler variant of this algorithm is used which is known as `min-sum algorithm' which reduces computational complexity as well as hardware complexity but with reduced accuracy. This paper analyzes the reason min-sum algorithm is more prone to errors when compared to the sum-product algorithm, and puts forward two improved algorithms which improve the performance of the min-sum algorithm with comparable algorithmic complexity.","PeriodicalId":184790,"journal":{"name":"2016 Moratuwa Engineering Research Conference (MERCon)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126583556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-05DOI: 10.1109/MERCON.2016.7480135
B. A. Y. Chathura, H. Punchihewa
Peripheral velocity, floor surface, contact pressure and patch area, acceleration and deceleration, camber angle, turning and contact slip, and type of rubber compounds are key determinants of tire life. However, there is no accepted method to measure tire wear against the factors mentioned above. At present, tire life is determined through field tests. Other methods include the use of a drum-type apparatus with bonded abrasive paper or abrasive particles between the tire and the drum. The limitations of these methods include the time requirement and inaccuracies in data to enable accurate analysis of tire life. As a result, the tire manufacturers find it difficult to specify the tire life with adequate degree of certainty to the customers. This gives rise to the need for a standard method to assure the life of tires for the benefit of the customers and to conduct tests to help improve tire performance. The proposed apparatus has the facility to change the operating speed, surface and the load at which the tires are tested. The overall designed length, width and height of the machine are respectively 3,000 mm, 1,150 mm and 3,350 mm. Computer-based simulation results for design evaluation suggest that the stress and strain are within allowable limits under typical loading conditions. Prototype tests proved that wear of samples are in congruence with DIN 53516. It also proved that heat buildup is present when compared with drum test results. Construction and testing of the apparatus and calibration of it are proposed as future work.
{"title":"A novel method to measure abrasion of solid tires","authors":"B. A. Y. Chathura, H. Punchihewa","doi":"10.1109/MERCON.2016.7480135","DOIUrl":"https://doi.org/10.1109/MERCON.2016.7480135","url":null,"abstract":"Peripheral velocity, floor surface, contact pressure and patch area, acceleration and deceleration, camber angle, turning and contact slip, and type of rubber compounds are key determinants of tire life. However, there is no accepted method to measure tire wear against the factors mentioned above. At present, tire life is determined through field tests. Other methods include the use of a drum-type apparatus with bonded abrasive paper or abrasive particles between the tire and the drum. The limitations of these methods include the time requirement and inaccuracies in data to enable accurate analysis of tire life. As a result, the tire manufacturers find it difficult to specify the tire life with adequate degree of certainty to the customers. This gives rise to the need for a standard method to assure the life of tires for the benefit of the customers and to conduct tests to help improve tire performance. The proposed apparatus has the facility to change the operating speed, surface and the load at which the tires are tested. The overall designed length, width and height of the machine are respectively 3,000 mm, 1,150 mm and 3,350 mm. Computer-based simulation results for design evaluation suggest that the stress and strain are within allowable limits under typical loading conditions. Prototype tests proved that wear of samples are in congruence with DIN 53516. It also proved that heat buildup is present when compared with drum test results. Construction and testing of the apparatus and calibration of it are proposed as future work.","PeriodicalId":184790,"journal":{"name":"2016 Moratuwa Engineering Research Conference (MERCon)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124548170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-04-05DOI: 10.1109/MERCON.2016.7480131
W. A. H. R. Weerathunge, D. Bandara, M. G. B. Amaratunga, A. C. De Silva
At present, 2 to 4 out of every 1000 births are affected with hearing impairments. In enforcing mandatory hearing screening for neonates, robust algorithms are required to make the process fast and efficient. In this paper, we present a novel algorithm to automate objective hearing screening using auditory brainstem response (referred to as ABR). An effective stimulus delivery mechanism, an efficient signal processing algorithm and an automatic peak detection algorithm are consolidated to reduce test time while maintaining accuracy. Simultaneously, compensation for ambient noise levels in clinical environments as opposed to sound proof environments are also considered. The Chirp Stimulus, Empirical Mode Decomposition and High Curvature Detection have been rigorously verified by MATLAB® simulations for data collected by ADInstruments® PowerLab. The algorithms utilized in screening reduce testing time to 8% of the gold standard hearing screening procedure, i.e. Click Stimulus based synchronized averaging. Moreover, the resultant ABR waveforms acquired are de-noised making them comparatively convenient to diagnose. The findings highlighted in the paper provide a superior methodology for robust and accurate newborn hearing screening compared to existing gold standard procedure.
{"title":"Robust algorithm for objective hearing screening of newborns using Automated Auditory Brain-stem Response","authors":"W. A. H. R. Weerathunge, D. Bandara, M. G. B. Amaratunga, A. C. De Silva","doi":"10.1109/MERCON.2016.7480131","DOIUrl":"https://doi.org/10.1109/MERCON.2016.7480131","url":null,"abstract":"At present, 2 to 4 out of every 1000 births are affected with hearing impairments. In enforcing mandatory hearing screening for neonates, robust algorithms are required to make the process fast and efficient. In this paper, we present a novel algorithm to automate objective hearing screening using auditory brainstem response (referred to as ABR). An effective stimulus delivery mechanism, an efficient signal processing algorithm and an automatic peak detection algorithm are consolidated to reduce test time while maintaining accuracy. Simultaneously, compensation for ambient noise levels in clinical environments as opposed to sound proof environments are also considered. The Chirp Stimulus, Empirical Mode Decomposition and High Curvature Detection have been rigorously verified by MATLAB® simulations for data collected by ADInstruments® PowerLab. The algorithms utilized in screening reduce testing time to 8% of the gold standard hearing screening procedure, i.e. Click Stimulus based synchronized averaging. Moreover, the resultant ABR waveforms acquired are de-noised making them comparatively convenient to diagnose. The findings highlighted in the paper provide a superior methodology for robust and accurate newborn hearing screening compared to existing gold standard procedure.","PeriodicalId":184790,"journal":{"name":"2016 Moratuwa Engineering Research Conference (MERCon)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127731444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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