Wearable body area network and sensors for healthcare applications = 웨어러블 헬스케어를 위한 저전력의 인체영역 센서 네트워크에 관한 연구

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With an increased demand of wearable healthcare systems, a low power body area network (BAN) becomes much more important for efficient and effective operation of the system. Among several wearable healthcare applications, sleep monitoring system should become much more convenient than other wearable healthcare systems since it always operates during sleep which is the uncontrolled state and its electrodes are placed on the very small area of the face. For maximum convenience, the following system requirements can be derived: 1) The electrodes should be as small as possible, 2) The wires outsides of the sleeper should be removed as much as possible, and 3) The weight of the total system should be as light as possible. In addition, compensation techniques are essential for the dynamic environment due to sleeper’s tossing and turning during sleep. This dissertation proposes a convenient sleep monitoring system that can deal with the whole above requirements. It consists of 3 low power SoCs for wearable BAN, and is implemented on the wearable circuit board technology, named Planar Fashionable Circuit Board (P-FCB). The first SoC is an ExG sensor. It includes 2 capacitive feedback instrumentation amplifiers for enough signal amplification and 10-bit SAR ADC for low power digitization. To deal with 4 different kinds of ExG signals including EEG, EOG, EMG, and ECG, it can control the amp gain and bandwidth. The sensing data is transmitted through the data transceiver in the SoC. It communicates with the WBAN controller chip with low power consumption. It adopts both low swing data transmission and duty-cycled operation so that it consumes only 0.33pJ/b with 20Mbps data rate in average. This sensor SoC is implemented in 0.18um CMOS process, and dissipates 25uW with 1.5V supply voltage. The second SoC is a WBAN controller which provides the real-time sensor network management of joining and leaving with low power consumption. For energy efficient network management, t...
Yoo, Hoi-Junresearcher유회준
한국과학기술원 : 전기및전자공학과,
Issue Date
568089/325007  / 020095115

학위논문(박사) - 한국과학기술원 : 전기및전자공학과, 2012.2, [ viii, 96 p. ]


Wearable Body Area Network (BAN); 가정형 수면다원검사; 저전력 네트워크 관리; 실시간 보상형 네트워크 컨트롤러; 저전력 인체영역 네트워크; 착용형 헬스케어; Low Power BAN Controller; Real-time Scalable Network Controller; Wearable Healthcare; Wearable Sleep Monitoring

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