Zamrath Nizam | University of Moratuwa (original) (raw)
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Papers by Zamrath Nizam
Photoplethysmography (PPG) is a non invasive technique of estimating Heart rate (HR) using wrist.... more Photoplethysmography (PPG) is a non invasive technique of estimating Heart rate (HR) using wrist. However motion artifacts (MA) cause the estimation of HR impractical when subjects perform intensive physical exercise. This study implements a fast algorithm based on statistical approach for extracting HR using MA corrupted PPG. The datasets were derived from subjects who were performing various forearm and upper arm activities. The datasets contain PPG signals with accelerometer data in 3-dimensions. The simultaneously recorded ECG signal was also available and used in verification of the algorithm. The algorithm first denoises the signal, and followed by focus reduction in spectrum and peak tracking. Finally the proposed algorithm computes Average Absolute Error (AAE) in each subject and overall AAE. The overall AAE was 1.5926 BPM. The Bland-Altman is used to compare ECG derived HR and PPG derived HR where Limit of Agreement (LOA) was ±7 BPM. This algorithm gives a great efficiency in time and robustness to track the HR on-the-go.
“My aim is simple: attract engineers into theoretical medicine where their expertise can improve ... more “My aim is simple: attract engineers into theoretical medicine where their expertise can improve the human condition” says author Edward R. Daugherty. Simply the mathematical modeling of cell structures is a long felt need that most of the researchers have emphasized on. As the future needs a translational platform for medicine into theoretical framework with signal processing functions of communication, control and information the models involving these aspects are highly stressed in the fields of system engineering.
… and Information Systems (ICIIS …, Jan 1, 2009
... JWKK Jayasundara∗, Rohan Munasinghe ∗ Department of Electronic and Telecommunication Univers... more ... JWKK Jayasundara∗, Rohan Munasinghe ∗ Department of Electronic and Telecommunication University of Moratuwa ... of Electronic and Telecommunication,University of Moratuwa, Email:rohan@ent.mrt ... Author thanks the extensive con-tribution that late Dr. DAI Munindradasa ...
Teaching Documents by Zamrath Nizam
Piduruthalagala (in Nuwara Eliya) is the highest top of the country and it is obvious that the Ai... more Piduruthalagala (in Nuwara Eliya) is the highest top of the country and it is obvious that the Airport and Aviation (A&A) service (pvt) ltd considered it with the favor of unique geographical feature to install the Sri Lanka‟s main radar system. On the other hand, Kikiliyamana is the second highest place in Nuwara Eliya urban area and several TV service providers such as; Swarnawahini, Hiru, Derana; have already established their TV base stations to provide their services across that geographical area. We visited only Swarnawahini base station.
Photoplethysmography (PPG) is a non invasive technique of estimating Heart rate (HR) using wrist.... more Photoplethysmography (PPG) is a non invasive technique of estimating Heart rate (HR) using wrist. However motion artifacts (MA) cause the estimation of HR impractical when subjects perform intensive physical exercise. This study implements a fast algorithm based on statistical approach for extracting HR using MA corrupted PPG. The datasets were derived from subjects who were performing various forearm and upper arm activities. The datasets contain PPG signals with accelerometer data in 3-dimensions. The simultaneously recorded ECG signal was also available and used in verification of the algorithm. The algorithm first denoises the signal, and followed by focus reduction in spectrum and peak tracking. Finally the proposed algorithm computes Average Absolute Error (AAE) in each subject and overall AAE. The overall AAE was 1.5926 BPM. The Bland-Altman is used to compare ECG derived HR and PPG derived HR where Limit of Agreement (LOA) was ±7 BPM. This algorithm gives a great efficiency in time and robustness to track the HR on-the-go.
“My aim is simple: attract engineers into theoretical medicine where their expertise can improve ... more “My aim is simple: attract engineers into theoretical medicine where their expertise can improve the human condition” says author Edward R. Daugherty. Simply the mathematical modeling of cell structures is a long felt need that most of the researchers have emphasized on. As the future needs a translational platform for medicine into theoretical framework with signal processing functions of communication, control and information the models involving these aspects are highly stressed in the fields of system engineering.
… and Information Systems (ICIIS …, Jan 1, 2009
... JWKK Jayasundara∗, Rohan Munasinghe ∗ Department of Electronic and Telecommunication Univers... more ... JWKK Jayasundara∗, Rohan Munasinghe ∗ Department of Electronic and Telecommunication University of Moratuwa ... of Electronic and Telecommunication,University of Moratuwa, Email:rohan@ent.mrt ... Author thanks the extensive con-tribution that late Dr. DAI Munindradasa ...
Piduruthalagala (in Nuwara Eliya) is the highest top of the country and it is obvious that the Ai... more Piduruthalagala (in Nuwara Eliya) is the highest top of the country and it is obvious that the Airport and Aviation (A&A) service (pvt) ltd considered it with the favor of unique geographical feature to install the Sri Lanka‟s main radar system. On the other hand, Kikiliyamana is the second highest place in Nuwara Eliya urban area and several TV service providers such as; Swarnawahini, Hiru, Derana; have already established their TV base stations to provide their services across that geographical area. We visited only Swarnawahini base station.