D. G. Guo

National University of Singapore, Tumasik, Singapore

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Publications (7)4.2 Total impact

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    ABSTRACT: This paper proposes a remote vital signs monitoring system, which integrates wireless body area network (WBAN) and personal digital assistant (PDA) phone technology. Four different physiological signs, e.g., ECG, SpO2, temperature and blood pressure, can be continuously acquired or derived from two wireless sensor nodes—ECG sensor and integrated SpO2/temperature sensor. Once sentinel events happened or the request to real-time display vital signs is confirmed, all physiological signs and critical indices will be immediately transmitted to patient's PDA phone through Bluetooth and further relayed to doctor's PDA phone through global system for mobile communication (GSM) technology. A prototype of such system has been successfully developed and implemented, which will offer high standard of healthcare with a major reduction in cost for our society.
    Journal of the Franklin Institute 08/2009; 346(6-346):531-542. DOI:10.1016/j.jfranklin.2009.02.003 · 2.26 Impact Factor
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    ABSTRACT: This paper proposes a novel micromachined physiological recording electrode with hollow microneedles for electrocardiography (ECG) measurement. Compared to the standard commercial wet electrode, a unique characteristic of this device is that a hollow microneedle array, which is made of silicon, can pierce through the outer skin surface, lowering the electrode-skin-electrode impedance (ESEI) and eliminating the need for skin preparation. Furthermore, instead of the conventional electrolytic gel, NaCl solution is used to fill the hollow microneedles and the reservoir etched in the backside of the silicon die; it is more comfortable, easy to acquire and imposes no side-effects on human. Test results of this electrode showed that this device could acquire typical structures of ECG signal with high signal to noise ratio, which provides a potential for routine and repetitive measurement with convenience, and comfort for home health care management of aged population.
    Sensors and Actuators A Physical 04/2009; 151(1-151):17-22. DOI:10.1016/j.sna.2009.01.020 · 1.94 Impact Factor
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    ABSTRACT: This paper proposes a novel micromachined physiological recording electrode with hollow microneedles for Electrocardiography (ECG) measurement. Compared to the standard commercial wet electrode and other proposed dry electrodes, a unique characteristic of this device is that a hollow microneedle array is made of silicon, which can pierce through the outer skin surface, lowering the electrode-skin-electrode impedance (ESEI) thus eliminating the need for skin preparation. Furthermore, instead of the conventional electrolytic gel, NaCl solution is used to fill the hollow microneedles and the reservoir etched in the backside of the silicon die; it is more comfortable, easy to acquire and imposes no side-effects on human. Test results of this electrode agreed well with the signal from commercial wet electrodes. This device provides a great potential for ECG measurement with cost-effective, convenience, and comfortability for health care management of aged population.
    Sensors, 2008 IEEE; 11/2008
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    ABSTRACT: A wearable BSN-based ECG-recording system is proposed for long-term and continuous arrhythmia monitoring. A novel micromachined Pt electrode is specifically designed, fabricated and integrated into a wearable chest band. A miniaturized PCB for ECG analog front-end is fabricated, and can be plugged on the BSN node to wirelessly transmit the signal to a hand-held device. Wavelet denoising is implemented on the hand-held device to further reduce the noise induced by electrode contact. Once a beat is detected, it is characterized by a number of features such as width, amplitude and rhythm pattern, and different types of arrhythmias can then be real-time classified. Once sentinel events such as arrhythmia is detected, the abnormal ECG signal can be sent wirelessly by hand-held device through GPRS to doctors or caregivers for prompt analysis and further treatment.
    Medical Devices and Biosensors, 2008. ISSS-MDBS 2008. 5th International Summer School and Symposium on; 07/2008
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    ABSTRACT: Wearable medical devices provide great convenience to the elderly for the monitoring of vital signs at home. This paper describes a novel wrist-worn vital signs routine monitoring system which can measure physiological signs including ECG, SpO2 (Saturation of Arterial Oxygen) and systolic blood pressure in real-time and with almost no impact on quality of life. The proposed device is easy to wear and convenient to use. A miniaturized PCB integrates the ECG analog front-end and SpO2 LED drive circuit and can be attached on a BSN node. By simply press the top ECG electrode on the device using any finger from the other hand, the measured physiological signals will be wirelessly transmitted to a PDA, where the heart beat rate, SpO2 and systolic blood pressure is calculated and displayed on a hand-held device, such as PDA.
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    ABSTRACT: A system based on Body Area Network for detecting the onset of faint fall using motion sensors is presented. It is a portion of the project for elderly fall safety in which abnormal ECG and blood pressure vital signs are used to predict the imminent faint and fall onset is subsequently detected in activating the feedback systems. A statement of hypothesis, proof and experimental results are thoroughly discussed and presented.
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    ABSTRACT: MEMSWear is an initiative that takes advantage of MEMS technology and applies it in developing a wearable platform for monitoring of vital signs and other important events such as falls in the elderly. BAN facilitated MEMSWear transmits data wirelessly to designated users, such as doctors, caregivers or family members through Bluetooth-enabled PDAs/phones belong to wearers. The system offers high standard of health care at a major reduction in cost that our society needs
    International Semiconductor Conference, 2006; 10/2006