Pub Date : 2017-11-01DOI: 10.1109/ROPEC.2017.8261601
Fernando U. Coronado-Martinez, F. Ruiz-Sánchez, D. A. Suarez-Cerda
In this paper, we present a Fault Detection and Diagnostic method for complex engineering systems and its application to a Fossil Fuel Electric Power Plant. It is a model-based approach with a multi-variable generation of residuals of the main fault situations, organized in a characteristic matrix of fault signatures, which establishes a reference pattern to continuously evaluate the residuals generated on-line in normal operation conditions. Residuals are calculated as the difference between the measured dynamics of the plant and a reference given by a simulated multi NNARX model presented in a companion paper. In our proposal, false detections are reduced by the introduction of hierarchic memories that filter spurious faults and threats compensated by the internal loops of control. The system identifies the kind of fault and the severity of the abnormal behavior in a four level scale, from threats to imminent faults. We describe the main procedures of the method and we illustrate them with examples obtained using data of the Steam Generation and Reheating/Super-heating Subsystem from the Electric Power Plant. We also present some results of the real time application implemented in a co-simulation architecture using a high performance simulator under the main faults situations of a Steam Generator sub-system.
{"title":"Fault detection and diagnosis of complex engineering systems based on a NNARX multi model applied to a fossil fuel electric power plant","authors":"Fernando U. Coronado-Martinez, F. Ruiz-Sánchez, D. A. Suarez-Cerda","doi":"10.1109/ROPEC.2017.8261601","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261601","url":null,"abstract":"In this paper, we present a Fault Detection and Diagnostic method for complex engineering systems and its application to a Fossil Fuel Electric Power Plant. It is a model-based approach with a multi-variable generation of residuals of the main fault situations, organized in a characteristic matrix of fault signatures, which establishes a reference pattern to continuously evaluate the residuals generated on-line in normal operation conditions. Residuals are calculated as the difference between the measured dynamics of the plant and a reference given by a simulated multi NNARX model presented in a companion paper. In our proposal, false detections are reduced by the introduction of hierarchic memories that filter spurious faults and threats compensated by the internal loops of control. The system identifies the kind of fault and the severity of the abnormal behavior in a four level scale, from threats to imminent faults. We describe the main procedures of the method and we illustrate them with examples obtained using data of the Steam Generation and Reheating/Super-heating Subsystem from the Electric Power Plant. We also present some results of the real time application implemented in a co-simulation architecture using a high performance simulator under the main faults situations of a Steam Generator sub-system.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124983573","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261602
Jose F. Tenesaca, Marco Carpio, R. Saltarén, G. Portilla
This article presents the nonlinear mathematical modeling of a proportional valve. In order to be able to determine the external and internal technical characteristics of the valve through experimental measurements of its parameters, it is possible to model and determine the parameters; however, it varies due to its aging effects and causes the system to respond incorrectly. Once the measurements were made it was possible to know that the model obtained experimentally approximates with the technical data of the manufacturer.
{"title":"Experimental determination of the nonlinear model for a proportional hydraulic valve","authors":"Jose F. Tenesaca, Marco Carpio, R. Saltarén, G. Portilla","doi":"10.1109/ROPEC.2017.8261602","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261602","url":null,"abstract":"This article presents the nonlinear mathematical modeling of a proportional valve. In order to be able to determine the external and internal technical characteristics of the valve through experimental measurements of its parameters, it is possible to model and determine the parameters; however, it varies due to its aging effects and causes the system to respond incorrectly. Once the measurements were made it was possible to know that the model obtained experimentally approximates with the technical data of the manufacturer.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133871422","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261692
Reagan Mbitiru, T. Ustun
Developed initially for pre-paid electricity meters in South Africa, the IEC 662055-41 standard is now the world's most ubiquitous open pre-paid metering standard. The standard is used in 35 million meters operated in 400 utilities in 30 countries. It now serves more users in Asia than in Africa. The standard uses 16 cycles of a block-cipher-like substitution and permutation process to both generate 20 digit tokens (through an encryption process) and to decode 20 digit tokens and determine the number of kWhs procured (through a decryption process), in conjunction with a 64 bit decoder key generated using the Data Encryption standard (DES). Despite its popularity, there is little work on the cryptology aspects of this standard. This paper discusses two types of cryptanalysis techniques used to attack this pre-paid metering standard. The first is a statistical analysis of the encrypted and decrypted inputs and outputs to determine if any correlation between them exists. The second is the use of slide attacks, a technique traditionally used for attacking block ciphers that use the same or ‘weak’ round keys for each encryption/decryption cycle. Using this second cryptanalysis attack, it is shown that 16 of the 64 bits of the decoder key can be exposed, an aspect not intended by its designers. Further combination with other techniques may be used to compromise the entire key.
{"title":"Using input-output correlations and a modified slide attack to compromise IEC 62055-41","authors":"Reagan Mbitiru, T. Ustun","doi":"10.1109/ROPEC.2017.8261692","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261692","url":null,"abstract":"Developed initially for pre-paid electricity meters in South Africa, the IEC 662055-41 standard is now the world's most ubiquitous open pre-paid metering standard. The standard is used in 35 million meters operated in 400 utilities in 30 countries. It now serves more users in Asia than in Africa. The standard uses 16 cycles of a block-cipher-like substitution and permutation process to both generate 20 digit tokens (through an encryption process) and to decode 20 digit tokens and determine the number of kWhs procured (through a decryption process), in conjunction with a 64 bit decoder key generated using the Data Encryption standard (DES). Despite its popularity, there is little work on the cryptology aspects of this standard. This paper discusses two types of cryptanalysis techniques used to attack this pre-paid metering standard. The first is a statistical analysis of the encrypted and decrypted inputs and outputs to determine if any correlation between them exists. The second is the use of slide attacks, a technique traditionally used for attacking block ciphers that use the same or ‘weak’ round keys for each encryption/decryption cycle. Using this second cryptanalysis attack, it is shown that 16 of the 64 bits of the decoder key can be exposed, an aspect not intended by its designers. Further combination with other techniques may be used to compromise the entire key.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132880972","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261610
M. del Rosario Rivera-Espinosa, Alfredo Y. Alejandre-López, Jesus E. Pedraza-Barrón, P. García-Vite, Héctor R. Robles-Campos
This paper exhibits the performance of a high step-up converter employed for maximum power extraction in a photovoltaic system. The proposed converter is conformed by a conventional boost followed by a diode-capacitor-based multiplier for increasing the nominal voltage gain of the boost converter, resulting in a lower duty cycle at the maximum power point. The main characteristics of the converters are analyzed in order to determine an optimal equivalent input impedance. Evaluation of the proposed converter using standard Perturb and Observe algorithm is carried out. Switching simulations evidence the good performance of the whole system under irradiance disturbances.
{"title":"A high step-up DC-DC converter with MPPT for PV application","authors":"M. del Rosario Rivera-Espinosa, Alfredo Y. Alejandre-López, Jesus E. Pedraza-Barrón, P. García-Vite, Héctor R. Robles-Campos","doi":"10.1109/ROPEC.2017.8261610","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261610","url":null,"abstract":"This paper exhibits the performance of a high step-up converter employed for maximum power extraction in a photovoltaic system. The proposed converter is conformed by a conventional boost followed by a diode-capacitor-based multiplier for increasing the nominal voltage gain of the boost converter, resulting in a lower duty cycle at the maximum power point. The main characteristics of the converters are analyzed in order to determine an optimal equivalent input impedance. Evaluation of the proposed converter using standard Perturb and Observe algorithm is carried out. Switching simulations evidence the good performance of the whole system under irradiance disturbances.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129221713","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261653
M. Quizhpi-Cuesta, F. Gómez-Juca, W. Orozco-Tupacyupanqui, F. Quizhpi-Palomeque
The classification of partial discharge (PD) or partial breakdown (PB) is an important issue that helps to identify the cause of this electrical phenomenon in pin type insulators. In this work, a PD classification method based on neural networks (NN) is proposed. This sorting technique consists of three parts. First, the detection and measurement of partial discharge are achieved by using a digital finite impulse response (FIR) filter, whose main objective is to obtain electrical charges with significant characteristics of the PB. The second part of the process deals with the classification of partial discharge. A statistical analysis is implemented to obtain PD patterns or fingerprints which are classified by a neural network. Finally, the third part of the proposed method focuses on interpreting the information obtained from the NN and determining the PD current in the pin isolator. The results show that this proposed technique of analysis and detection of partial discharge in pin type isolators is successful in optimizing the time of analysis and classification of PB.
{"title":"Classification of partial discharge in pin type insulators using fingerprints and neural networks","authors":"M. Quizhpi-Cuesta, F. Gómez-Juca, W. Orozco-Tupacyupanqui, F. Quizhpi-Palomeque","doi":"10.1109/ROPEC.2017.8261653","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261653","url":null,"abstract":"The classification of partial discharge (PD) or partial breakdown (PB) is an important issue that helps to identify the cause of this electrical phenomenon in pin type insulators. In this work, a PD classification method based on neural networks (NN) is proposed. This sorting technique consists of three parts. First, the detection and measurement of partial discharge are achieved by using a digital finite impulse response (FIR) filter, whose main objective is to obtain electrical charges with significant characteristics of the PB. The second part of the process deals with the classification of partial discharge. A statistical analysis is implemented to obtain PD patterns or fingerprints which are classified by a neural network. Finally, the third part of the proposed method focuses on interpreting the information obtained from the NN and determining the PD current in the pin isolator. The results show that this proposed technique of analysis and detection of partial discharge in pin type isolators is successful in optimizing the time of analysis and classification of PB.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127913709","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261662
Francisco Ramón Urquijo Ramos, J. Ramírez, J. Jiménez, L. Hernández
This paper presents a multi-level single-phase converter as an option to inject photovoltaic power into the grid and it is shown how at the same time it can be used to compensate power factor. The converter consists of three cell connected in cascade, each cell is an H-bridge inverter. A relatively low switching frequency and low size coupling inductance are used in order to achieve the power injection. In order to maintain regulated dc links a control strategy is carried out. Also, how this control strategy is capable to improve power quality, through to compensate reactive power and harmonic distortion, is shown in detail. The performance of the converter and its control is validated through simulation results on PSIM simulator.
{"title":"Multi-level inverter connected to the grid with harmonic mitigation for photovoltaic power injection","authors":"Francisco Ramón Urquijo Ramos, J. Ramírez, J. Jiménez, L. Hernández","doi":"10.1109/ROPEC.2017.8261662","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261662","url":null,"abstract":"This paper presents a multi-level single-phase converter as an option to inject photovoltaic power into the grid and it is shown how at the same time it can be used to compensate power factor. The converter consists of three cell connected in cascade, each cell is an H-bridge inverter. A relatively low switching frequency and low size coupling inductance are used in order to achieve the power injection. In order to maintain regulated dc links a control strategy is carried out. Also, how this control strategy is capable to improve power quality, through to compensate reactive power and harmonic distortion, is shown in detail. The performance of the converter and its control is validated through simulation results on PSIM simulator.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127937701","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261618
Luis Caiza, Albert Rosich-Oliva, C. Ocampo‐Martinez, D. Benítez
In this paper, we propose to use Model Predictive Control techniques to reduce the energy consumption in an industrial process by incorporating energy consumption restrictions in the problem formulation. We propose to use a Model Predictive Control supervisor to calculate the optimum references for simple control loops regulated by individual PID controllers. The results obtained are compared against those obtained when a traditional control strategy exclusively based on PID controllers was used. By using this supervisory control strategy a reduction on energy consumption of about 10% was achieved.
{"title":"Reducing energy consumption in an industrial process by using model predictive control","authors":"Luis Caiza, Albert Rosich-Oliva, C. Ocampo‐Martinez, D. Benítez","doi":"10.1109/ROPEC.2017.8261618","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261618","url":null,"abstract":"In this paper, we propose to use Model Predictive Control techniques to reduce the energy consumption in an industrial process by incorporating energy consumption restrictions in the problem formulation. We propose to use a Model Predictive Control supervisor to calculate the optimum references for simple control loops regulated by individual PID controllers. The results obtained are compared against those obtained when a traditional control strategy exclusively based on PID controllers was used. By using this supervisory control strategy a reduction on energy consumption of about 10% was achieved.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130899272","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261573
Marcelo Mogrovejo, E. Pinos-Vélez, Raul Redrovan, L. Serpa-Andrade
The objective of this study is make a communication system for people with Locked-in syndrome, these people have Quadriplegia and Anarthria, but intact cognitive abilities. In Ecuador, this type of studies are not performed for various reasons, for this reason, it seeks to generate a support tool for communication between people, seeking to improve their life style through a prototype that was evaluated by young health people from 19 to 25 years old, giving favorable results in terms of performance, optimization of time, flexibility, functionality and adaptability. The prototype have a matrix, where find the letters of the alphabet and special characters such as space or deleted depending of the idiom, in this case is Spanish, each letter have a light indicator, that will serve to character selection by scanning rows and columns; the selection is made by electromyography signals of the eyelid, that are the unique muscle controlled by the persona with quadriplegia.
{"title":"Communication system for people with locked-in syndrome through electromyography signals","authors":"Marcelo Mogrovejo, E. Pinos-Vélez, Raul Redrovan, L. Serpa-Andrade","doi":"10.1109/ROPEC.2017.8261573","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261573","url":null,"abstract":"The objective of this study is make a communication system for people with Locked-in syndrome, these people have Quadriplegia and Anarthria, but intact cognitive abilities. In Ecuador, this type of studies are not performed for various reasons, for this reason, it seeks to generate a support tool for communication between people, seeking to improve their life style through a prototype that was evaluated by young health people from 19 to 25 years old, giving favorable results in terms of performance, optimization of time, flexibility, functionality and adaptability. The prototype have a matrix, where find the letters of the alphabet and special characters such as space or deleted depending of the idiom, in this case is Spanish, each letter have a light indicator, that will serve to character selection by scanning rows and columns; the selection is made by electromyography signals of the eyelid, that are the unique muscle controlled by the persona with quadriplegia.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128342860","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261688
Gustavo Alvarez-Monroy, Arturo Mejia- Barron, Martin Valtierra- Rodriguez, D. Granados-Lieberman, J. C. Olivares-Galvan, R. Escarela-Perez
Today, transformers are basic elements and of great importance in electrical systems. Unfortunately, they are prone to failures, including short-circuit failures. Therefore, it is necessary to apply methodologies that help to detect faults in a timely manner to avoid damage to the transformer. In this paper, it is proposed a new methodology to identify short-circuit faults by means of a technique called Empirical Mode Decomposition (EMD), which decomposes the signals into new signals called Intrinsic Mode Functions (IMFs). These signals are analyzed with the entropy of Shannon in order to obtain indices that help to characterize the severity of the fault. The analyzed signals correspond to both a healthy condition and different short-circuited conditions, i.e., 10, 20, 30, and 40 turns. Results demonstrate the effectiveness of the proposal.
{"title":"A new EMD-Shannon entropy-based methodology for detection of inter-turn faults in transformers","authors":"Gustavo Alvarez-Monroy, Arturo Mejia- Barron, Martin Valtierra- Rodriguez, D. Granados-Lieberman, J. C. Olivares-Galvan, R. Escarela-Perez","doi":"10.1109/ROPEC.2017.8261688","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261688","url":null,"abstract":"Today, transformers are basic elements and of great importance in electrical systems. Unfortunately, they are prone to failures, including short-circuit failures. Therefore, it is necessary to apply methodologies that help to detect faults in a timely manner to avoid damage to the transformer. In this paper, it is proposed a new methodology to identify short-circuit faults by means of a technique called Empirical Mode Decomposition (EMD), which decomposes the signals into new signals called Intrinsic Mode Functions (IMFs). These signals are analyzed with the entropy of Shannon in order to obtain indices that help to characterize the severity of the fault. The analyzed signals correspond to both a healthy condition and different short-circuited conditions, i.e., 10, 20, 30, and 40 turns. Results demonstrate the effectiveness of the proposal.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122844878","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261606
Candy Obdulia Sosa-Jimenez, H. Rios-Figueroa, E. Rechy-Ramirez, A. Marín-Hernández, Ana Luisa Solís González-Cosío
The Mexican Sign Language (MSL) has its own structure and grammar different from the Spanish spoken in Mexico. The MSL is composed of more than 1000 signs used by the deaf community of this country. Few hearing people know and use MSL, therefore there is a communication barrier between hearing and deaf people. In order to overcome this issue, we propose a non-invasive sign detection application, so that the interlocutor interacts with the system in a natural way interpreting a set of signs of the MSL using a bimodal cognitive vision system. Our application uses a Kinect sensor to obtain the gestures, geometric moments and Hidden Markov models to process it. From experiments performed with 10 people, it was concluded that our application achieved an average sensitivity of 86% and an average specificity of 80%.
{"title":"Real-time Mexican Sign Language recognition","authors":"Candy Obdulia Sosa-Jimenez, H. Rios-Figueroa, E. Rechy-Ramirez, A. Marín-Hernández, Ana Luisa Solís González-Cosío","doi":"10.1109/ROPEC.2017.8261606","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261606","url":null,"abstract":"The Mexican Sign Language (MSL) has its own structure and grammar different from the Spanish spoken in Mexico. The MSL is composed of more than 1000 signs used by the deaf community of this country. Few hearing people know and use MSL, therefore there is a communication barrier between hearing and deaf people. In order to overcome this issue, we propose a non-invasive sign detection application, so that the interlocutor interacts with the system in a natural way interpreting a set of signs of the MSL using a bimodal cognitive vision system. Our application uses a Kinect sensor to obtain the gestures, geometric moments and Hidden Markov models to process it. From experiments performed with 10 people, it was concluded that our application achieved an average sensitivity of 86% and an average specificity of 80%.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121382136","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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