Pub Date : 2014-09-25DOI: 10.1109/AICERA.2014.6908281
Lidiya Mariam Koshy, J. Chandran
MOSFET scaling affects the leakage and delay of VLSI circuits. Moreover implementation of wide fan in gates increases leakage and delay. This paper shows the comparative analysis of power and delay of various domino logic which are implemented in wide fan-in gates. The effect on delay due to the variations in various factors such as supply voltage, temperature and signal strength has been presented. There are two kinds of delay that have been considered: D-Q delay and C-Q delay This will give a better understanding about different dynamic gates and make the decisions for designing high performance, low leakage and sizing of VLSI systems. The schematic entry as well as the simulations were done using Mentor Graphics tool kit. The circuit layout has been implemented in IC workstation and run in Calibre for physical verification using TSMC 180nm process technology at 1.8V.
{"title":"Sub- 0.18μm low leakage and high performance dynamic logic wide fan-in gates","authors":"Lidiya Mariam Koshy, J. Chandran","doi":"10.1109/AICERA.2014.6908281","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908281","url":null,"abstract":"MOSFET scaling affects the leakage and delay of VLSI circuits. Moreover implementation of wide fan in gates increases leakage and delay. This paper shows the comparative analysis of power and delay of various domino logic which are implemented in wide fan-in gates. The effect on delay due to the variations in various factors such as supply voltage, temperature and signal strength has been presented. There are two kinds of delay that have been considered: D-Q delay and C-Q delay This will give a better understanding about different dynamic gates and make the decisions for designing high performance, low leakage and sizing of VLSI systems. The schematic entry as well as the simulations were done using Mentor Graphics tool kit. The circuit layout has been implemented in IC workstation and run in Calibre for physical verification using TSMC 180nm process technology at 1.8V.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132204871","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 : 2014-09-25DOI: 10.1109/AICERA.2014.6908228
V. Veena, G. Kumar
Optical satellite images are the main source of geophysical information which can be used for various land surface studies. But one of the most challenging issue faced by these images are the severe cloud contamination. As far as optical satellite images are of concern, thick clouds will completely obstructs the observation of landscape and uneven illumination caused by thin clouds will further limits the processing of optical satellite images. So a method to eliminate the impact of clouds in optical satellite images is necessary to improve the effectiveness and availability of remote sensing data for various land surface studies. In this paper, a novel methodology for removing the uneven illumination caused by thick and thin clouds is intro-duced. For this approach, multitemporal cloud contaminated optical satellite images are required with the assumption that in each image cloud cover change significantly over a short duration of time. A cloud detection algorithm in frequency domain is used to detect the cloud contaminated portions in multitemporal optical satellite images. Suitable cloud free patch from reference images for reconstructing cloud contaminated portions in target image are selected based on lower amount of cloud rate and quality assessment technique. Some experimental analysis is conducted on collected Aqua MODIS sensor captured multitemporalsatellite images. Experimental result shows that the proposed algorithm can effectively remove majority of cloud contamination within the optical satellite images. Finally quantitative measures are performed to evaluate the feasibility of the methodology.
{"title":"Reconstruction of cloud contaminated information in optical satellite images","authors":"V. Veena, G. Kumar","doi":"10.1109/AICERA.2014.6908228","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908228","url":null,"abstract":"Optical satellite images are the main source of geophysical information which can be used for various land surface studies. But one of the most challenging issue faced by these images are the severe cloud contamination. As far as optical satellite images are of concern, thick clouds will completely obstructs the observation of landscape and uneven illumination caused by thin clouds will further limits the processing of optical satellite images. So a method to eliminate the impact of clouds in optical satellite images is necessary to improve the effectiveness and availability of remote sensing data for various land surface studies. In this paper, a novel methodology for removing the uneven illumination caused by thick and thin clouds is intro-duced. For this approach, multitemporal cloud contaminated optical satellite images are required with the assumption that in each image cloud cover change significantly over a short duration of time. A cloud detection algorithm in frequency domain is used to detect the cloud contaminated portions in multitemporal optical satellite images. Suitable cloud free patch from reference images for reconstructing cloud contaminated portions in target image are selected based on lower amount of cloud rate and quality assessment technique. Some experimental analysis is conducted on collected Aqua MODIS sensor captured multitemporalsatellite images. Experimental result shows that the proposed algorithm can effectively remove majority of cloud contamination within the optical satellite images. Finally quantitative measures are performed to evaluate the feasibility of the methodology.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116193813","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 : 2014-09-25DOI: 10.1109/AICERA.2014.6908288
K. S. Gayathri Devi, S. Arun, C. Sreeja
The diode-clamped multilevel topology has the problem of voltage unbalance of dc link capacitors. This problem can be solved by different methods such as using separate dc sources instead of dc link capacitors, or adding auxiliary circuits to the conventional diode clamped inverter or adopting space vector modulation control, up to three-level inverter applications. For more level applications, the use of separate dc sources is not viable and the control techniques for other two methods will be more complicated to implement. Hence the Hybrid Multilevel Inverter Based on Switched-capacitor and Diode-clamped units can be used for higher levels. This topology can balance the capacitor voltage and also boost the terminal voltage in the output with the help of switched capacitor converter. The boosting of output voltage reduces the transformation ratio of the input transformer or avoids it in low power applications, thereby reducing the cost and design complication of converters. The simulation of this topology is done using MAT lab simulink software and compared with other voltage balancing techniques.
{"title":"Comparison of capacitor voltage balancing techniques in multilevel inverters","authors":"K. S. Gayathri Devi, S. Arun, C. Sreeja","doi":"10.1109/AICERA.2014.6908288","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908288","url":null,"abstract":"The diode-clamped multilevel topology has the problem of voltage unbalance of dc link capacitors. This problem can be solved by different methods such as using separate dc sources instead of dc link capacitors, or adding auxiliary circuits to the conventional diode clamped inverter or adopting space vector modulation control, up to three-level inverter applications. For more level applications, the use of separate dc sources is not viable and the control techniques for other two methods will be more complicated to implement. Hence the Hybrid Multilevel Inverter Based on Switched-capacitor and Diode-clamped units can be used for higher levels. This topology can balance the capacitor voltage and also boost the terminal voltage in the output with the help of switched capacitor converter. The boosting of output voltage reduces the transformation ratio of the input transformer or avoids it in low power applications, thereby reducing the cost and design complication of converters. The simulation of this topology is done using MAT lab simulink software and compared with other voltage balancing techniques.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125860546","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 : 2014-09-25DOI: 10.1109/AICERA.2014.6908258
Betsy Baby, A. Shajilal
The current source inverter (CSI) topology is well suited for high power medium voltage (MV) drive applications. For decoupled control of the machine flux and torque, indirect vector control (IVC) method is preferred because of its less calculational complexity and reduced machine parameter dependence. Because of the absence of a flux control loop, conventional IVC CSI drives exhibit poor dynamic performance and transient field misorientation. Hence by incorporating two additional proportional integral controllers with machine current feedback signals, modifications are done on the conventional IVC CSI drive to ensure superior decoupling and field orientation operation. For the feed forward adjustment of slip frequency rotor resistance is required which undergoes considerable variation leading to the coupling of the d-q axes variables and produce sluggish response. In order to achieve proper flux orientation in IVC induction machine drive, a model reference adaptive controller (MRAC) utilizing reactive power is used for online estimation of rotor resistance. A load torque observer with feedforward control is also employed to enhance the dynamic performance of the induction motor drive. The performance of an induction motor under improved IVC method and rotor resistance updation scheme based on model reference adaptive control (MRAC) has been studied and confirmed by simulation using MATLAB /SIMULINK.
{"title":"An improved indirect vector controlled current source inverter fed induction motor drive with rotor resistance adaptation","authors":"Betsy Baby, A. Shajilal","doi":"10.1109/AICERA.2014.6908258","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908258","url":null,"abstract":"The current source inverter (CSI) topology is well suited for high power medium voltage (MV) drive applications. For decoupled control of the machine flux and torque, indirect vector control (IVC) method is preferred because of its less calculational complexity and reduced machine parameter dependence. Because of the absence of a flux control loop, conventional IVC CSI drives exhibit poor dynamic performance and transient field misorientation. Hence by incorporating two additional proportional integral controllers with machine current feedback signals, modifications are done on the conventional IVC CSI drive to ensure superior decoupling and field orientation operation. For the feed forward adjustment of slip frequency rotor resistance is required which undergoes considerable variation leading to the coupling of the d-q axes variables and produce sluggish response. In order to achieve proper flux orientation in IVC induction machine drive, a model reference adaptive controller (MRAC) utilizing reactive power is used for online estimation of rotor resistance. A load torque observer with feedforward control is also employed to enhance the dynamic performance of the induction motor drive. The performance of an induction motor under improved IVC method and rotor resistance updation scheme based on model reference adaptive control (MRAC) has been studied and confirmed by simulation using MATLAB /SIMULINK.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115802569","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 : 2014-09-25DOI: 10.1109/AICERA.2014.6908278
C. Jyothirmayi, A. Nasar
Building Integrated solar cell has now becoming the rising Trend in the area of industrial drives and energy conversion. This paper focuses on the interfacing of MPPT based Photovoltaic cell with Cascade Multilevel Inverter. Integrated PV panel has performance losses due to quick variation in solar light intensity and temperature of the solar panel. This constraint on PV side is managed by an effective Adaptive neuro fuzzy [ANFIS] based intelligent MPPT control algorithm. The system also incorporates a power conditioning unit (Inverter). The switching angle calculation for the inverter is determined by a novel algorithm. The innovation of paper lies on the interfacing of ANFIS based MPPT with a novel switching angle algorithm based MultiLevel Inverter.
{"title":"Step modulated multilevel inverter incorporated upon ANFIS based intelligent PV MPPT","authors":"C. Jyothirmayi, A. Nasar","doi":"10.1109/AICERA.2014.6908278","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908278","url":null,"abstract":"Building Integrated solar cell has now becoming the rising Trend in the area of industrial drives and energy conversion. This paper focuses on the interfacing of MPPT based Photovoltaic cell with Cascade Multilevel Inverter. Integrated PV panel has performance losses due to quick variation in solar light intensity and temperature of the solar panel. This constraint on PV side is managed by an effective Adaptive neuro fuzzy [ANFIS] based intelligent MPPT control algorithm. The system also incorporates a power conditioning unit (Inverter). The switching angle calculation for the inverter is determined by a novel algorithm. The innovation of paper lies on the interfacing of ANFIS based MPPT with a novel switching angle algorithm based MultiLevel Inverter.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129249008","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908210
Vishnu Keloth, M. Mijas, P. A. Manu, P. Thomas, Vishnu M. Menon, R. Praveen
The reduction of cogging torque in Permanent Magnet Brushless DC (PMBLC) Motor is very essential for high performance applications. This paper investigates on the development of a design which reduces the cogging torque to an optimum level. For this purpose, a comparative analysis on the conventional cogging torque reduction techniques as well as that of relatively new design techniques is analyzed. It has been found that cogging torque obtained with parallel magnetization is smaller than that obtained with radial magnetization. Three novel design models has been investigated and the result obtained for a model having one bifurcation on stator tooth with different magnet width on rotor poles offered least cogging torque both in terms of peak and average value of cogging torque. The result obtained from the combination of conventional as well as the relatively new methods to reduce cogging torque are found to reduce cogging torque up to 88% and hence can be applicable in high precision applications.
{"title":"Analysis of cogging torque reduction techniques of a slotless PMBLDC motor","authors":"Vishnu Keloth, M. Mijas, P. A. Manu, P. Thomas, Vishnu M. Menon, R. Praveen","doi":"10.1109/AICERA.2014.6908210","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908210","url":null,"abstract":"The reduction of cogging torque in Permanent Magnet Brushless DC (PMBLC) Motor is very essential for high performance applications. This paper investigates on the development of a design which reduces the cogging torque to an optimum level. For this purpose, a comparative analysis on the conventional cogging torque reduction techniques as well as that of relatively new design techniques is analyzed. It has been found that cogging torque obtained with parallel magnetization is smaller than that obtained with radial magnetization. Three novel design models has been investigated and the result obtained for a model having one bifurcation on stator tooth with different magnet width on rotor poles offered least cogging torque both in terms of peak and average value of cogging torque. The result obtained from the combination of conventional as well as the relatively new methods to reduce cogging torque are found to reduce cogging torque up to 88% and hence can be applicable in high precision applications.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114975402","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908221
J. George, N. Naveen, P. R. Madhava Panicker
A manipulator robot for crack detection and welding in underground process pipes is developed by the authors. Movement and crack detection ability of the robot are tested. Dye penetrant inspection technique is used for crack detection. The size of the robot is set to help easy movement in pipes of diameter as low as 450mm. This paper presents some of the features and other key design details of this robot.
{"title":"Manipulator robot for crack detection and welding in underground process pipes","authors":"J. George, N. Naveen, P. R. Madhava Panicker","doi":"10.1109/AICERA.2014.6908221","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908221","url":null,"abstract":"A manipulator robot for crack detection and welding in underground process pipes is developed by the authors. Movement and crack detection ability of the robot are tested. Dye penetrant inspection technique is used for crack detection. The size of the robot is set to help easy movement in pipes of diameter as low as 450mm. This paper presents some of the features and other key design details of this robot.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115353403","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908263
Reshma Rajan, M. Indu
Biometrics is mainly used for human identification using different physical traits. The traits that can be used as biometrics are face, palm print, voice, signature, gait etc. But use of these traits in biometrics is not perfectly reliable or secure. So, in order to overcome the security issue, a non-forgeable pattern has to be used. In terms of security and convenience, the finger-vein is a promising biometric pattern for human identification. Since the vein images can be taken from live body only and these patterns being attributes present inside the human body, they are extremely complex to forge. In this paper, the finger vein images are enhanced by incorporating the concept of local histogram equalization, which improves the local contrast of an image. The features are extracted from the enhanced images using a combination of Frangi filter, FAST(Features from Accelerated Segment Test) algorithm and FREAK (Fast Retina Keypoint) descriptors.
生物识别技术主要用于利用不同的身体特征对人体进行识别。可用于生物识别的特征有面部、掌纹、声音、签名、步态等。但在生物识别技术中使用这些特征并不完全可靠或安全。因此，为了克服安全问题，必须使用不可伪造的模式。在安全性和方便性方面，手指静脉是一种很有前途的生物识别模式。由于静脉图像只能从活体上拍摄，而且这些图案是存在于人体内部的属性，因此伪造起来非常复杂。本文通过引入局部直方图均衡化的概念对手指静脉图像进行增强，提高了图像的局部对比度。结合Frangi滤波、FAST(feature from Accelerated Segment Test)算法和FREAK (FAST Retina Keypoint)描述符，从增强图像中提取特征。
{"title":"A novel finger vein feature extraction technique for authentication","authors":"Reshma Rajan, M. Indu","doi":"10.1109/AICERA.2014.6908263","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908263","url":null,"abstract":"Biometrics is mainly used for human identification using different physical traits. The traits that can be used as biometrics are face, palm print, voice, signature, gait etc. But use of these traits in biometrics is not perfectly reliable or secure. So, in order to overcome the security issue, a non-forgeable pattern has to be used. In terms of security and convenience, the finger-vein is a promising biometric pattern for human identification. Since the vein images can be taken from live body only and these patterns being attributes present inside the human body, they are extremely complex to forge. In this paper, the finger vein images are enhanced by incorporating the concept of local histogram equalization, which improves the local contrast of an image. The features are extracted from the enhanced images using a combination of Frangi filter, FAST(Features from Accelerated Segment Test) algorithm and FREAK (Fast Retina Keypoint) descriptors.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115359702","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908225
M. Ajayan, P. Nishad
Vibrations are a common thing in flexible mechanical systems like robotic arm, gantry and tower crane system. A lot of researches are being carried out for reducing these mechanical vibrations. Input shaping is one of the most successful methods among them. The modelling of gantry crane in 3 dimension using Euler-Lagrange approach is done first. Input shaping using system inversion method is done to control the vibration and for precise positioning of the above derived system in 3 dimensions. It can done by specifying the required output function with required velocity and acceleration profile and designing an input function to achieve it. A third order exponential function is used here. Then the performance is compared with some other exponential functions. Simulations are done on MATLAB. The position and swing angle of gantry crane are simulated and plotted.
{"title":"Vibration control of 3D gantry crane with precise positioning in two dimensions","authors":"M. Ajayan, P. Nishad","doi":"10.1109/AICERA.2014.6908225","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908225","url":null,"abstract":"Vibrations are a common thing in flexible mechanical systems like robotic arm, gantry and tower crane system. A lot of researches are being carried out for reducing these mechanical vibrations. Input shaping is one of the most successful methods among them. The modelling of gantry crane in 3 dimension using Euler-Lagrange approach is done first. Input shaping using system inversion method is done to control the vibration and for precise positioning of the above derived system in 3 dimensions. It can done by specifying the required output function with required velocity and acceleration profile and designing an input function to achieve it. A third order exponential function is used here. Then the performance is compared with some other exponential functions. Simulations are done on MATLAB. The position and swing angle of gantry crane are simulated and plotted.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127079382","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908199
Greeshma Joseph, Almaria Joseph, Geevarghese Titus, R. Thomas, D. Jose
The use of optical sensors is nowadays very common in the area of non-invasive diagnosis. This is mainly because of their salient features like, simple construction, low cost, easy to use, relatively inexpensive nature etc. Photoplethysmography (PPG) sensor is one among the wide variety of optical sensors available, and is used to measure the blood volumetric changes occurring in the various parts of the body. PPG signal contains rich source of information related to cardio-pulmonary system. But the major problem associated with the signal is the motion artifacts, causing corruption in the original PPG signal. The aim of this study is to know in deep about the different parameters of PPG signal. Peak and transition points of the pulse signal are determined as a part of pulse wave analysis. Wavelet transform is now commonly used in a wide variety of signal processing applications. In this work wavelet de-noising is used for removing AWGN from the PPG signal. Various mother wavelets are studied and the performance of them are evaluated based on the cross correlation with the original signal.
{"title":"Photoplethysmogram (PPG) signal analysis and wavelet de-noising","authors":"Greeshma Joseph, Almaria Joseph, Geevarghese Titus, R. Thomas, D. Jose","doi":"10.1109/AICERA.2014.6908199","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908199","url":null,"abstract":"The use of optical sensors is nowadays very common in the area of non-invasive diagnosis. This is mainly because of their salient features like, simple construction, low cost, easy to use, relatively inexpensive nature etc. Photoplethysmography (PPG) sensor is one among the wide variety of optical sensors available, and is used to measure the blood volumetric changes occurring in the various parts of the body. PPG signal contains rich source of information related to cardio-pulmonary system. But the major problem associated with the signal is the motion artifacts, causing corruption in the original PPG signal. The aim of this study is to know in deep about the different parameters of PPG signal. Peak and transition points of the pulse signal are determined as a part of pulse wave analysis. Wavelet transform is now commonly used in a wide variety of signal processing applications. In this work wavelet de-noising is used for removing AWGN from the PPG signal. Various mother wavelets are studied and the performance of them are evaluated based on the cross correlation with the original signal.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"91 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127429656","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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