Shanhong Xia

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This paper presents a design and a contrast test of an ultra-low power wireless health monitoring system capable of measuring a subject's ECG (Electrocardiography), respiration, and body temperature. The system is based on the BLE (Bluetooth Low Energy) technology which is most valued for its ultra-low power consumption. Compared to our former design using(More)
A novel algorithm for subtracting the artifacts from an electrocardiogram (ECG) signal and detecting the QRS complex based on empirical mode decomposition has been designed, tested, and evaluated. This method can remove both the noise of the power line interference and baseline wander from the ECG signal with minimum distortion, and R peaks can be exactly(More)
In second language learning, unawareness of the differences between correct and incorrect pronunciations is one of the largest obstacles for mispronunciation correction. In order to make the feedback more discriminatively perceptible, this paper presents a novel method for corrective feedback generation, namely, exaggerated feedback, for language learning.(More)
A novel method of temperature compensation for thermally excited silicon nitride beam resonant pressure sensors is described and some numerical modeling results for this scheme are presented. The proposed approach is based on measurement of resonant frequencies for two resonant beams inducing different axial stress under an applied pressure. The applied(More)
A multifunction wearable noninvasive ambulatory monitoring sensor based on Electrocardiogram (ECG) and Impedance Cardiography (ICG) has been designed, fabricated and tested. The electric function (with ECG) and mechanical function (with ICG) of the heart can be monitored simultaneously and continuously. Based the RR serials computed from ECG waveform, the(More)
This paper investigated two different modification methods of graphene (GN) on ultramicroelectrode array (UMEA) and applied the GN modified UMEA for the determination of dissolved oxygen (DO). The UMEAs were fabricated by Micro Electro-Mechanical System (MEMS) technique and the radius of each ultramicroelectrode is 10 μm. GN-NH2 and GN-COOH were modified on(More)