A Novel Method for Classification of Wrist Pulse for Health Monitoring using Sparse Classifier

A wrist pulse system has been developed that can detect both normal and abnormal conditions in patients based on wrist pulse diagnosis. Pulse diagnosis are mainly done in three steps they are pulse preprocessing, feature extraction and classification. The acquired wrist pulse signal is passed through consecutive stages of denoising, baseline wander removal and period segmentation. The feature extraction is then done to extract time domain, frequency domain and wavelet features. Classification is then done for finding normal and abnormal conditions using SVM (Support Vector Machine) classifier. It is found that by using the SVM classifier, distributed features cannot be efficiently identified, classification accuracy is low and sub-classification cannot be done for abnormal condition as SVM supports only binary data. So SVM classifier is replaced by sparse classifier which has higher accuracy since it supports highly nonlinear data. T test is used in feature selection so that it needs low memory and less time consumption. Sub-classification has been done for the abnormal cases of Anemia, Arrhythmia, Tuberculosis and Wolff Parkinson White Syndrome

Chronopotentiometric studies of bipolar membrane in sodium chloride solution

796-799The electrical properties of bipolar membrane (BPM), have been examined in sodium chloride solution by chronopotentiometry. In this method, the membrane is placed between the two current carrying electrodes while its potential is recorded against the electrolysis time using two SCE electrodes closely placed on either sides. An inflection is observed in the membrane potential at the transition time, , The inflection which is fairly sharp in milli-molar concentrations of NaCI and becomes ill-defined as the concentration of the latter is increased to 0.05 M, and is not obtained in 0.1 M or higher concentration of NaCI. The measured value of i1/2 is found to be independent of the current density applied at the electrodes but it increases linearly as the concentration of the electrolyte increases as predicted by theoretical equations