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In recent years, demands on electronic implantable medical devices (IMDs) are significantly increasing. It is quite challenging to design energy-efficient IMDs. IMDs requiring wireless connection have two types of communications, i.e., the sensor data transmission, and the command/control information exchange. The design considerations for wireless IMD transceiver is reviewed, and a dual-band/mode...
Personal Micro Grid Package (PMGP) is a basic package of home application that realizes power generation, power storage and power interchange between individual users. In the future, the power sharing by individual generation is proposed to be the model of future grid. We propose PMGP as the basic concept of future power grid which allows the power interchange among individuals. As a sample case,...
The presented SoC is an 8-bit MCU based processor with 32-bit encryption algorithm acceleration and special security mechanism dedicated to mobile one-time password (MOTP) applications. The encryption algorithm accelerator can perform several 32-bit key operations for hash function computation, with each in one clock cycle. The SoC also features protection mechanisms which can prevent attackers from...
This paper proposes a new wireless power transfer (WPT) system for the endoscopic capsule. In the system, a group of vertically segmented primary coils around the human body are adopted as the transmitting coils. According to the position of the endoscopic capsule, one of the transmitting coils is intelligently selected to transfer the power with the highest efficiency. This paper also presents a...
A high-energy-efficiency wireless communication link scheme is proposed for portable medical applications with strict resource constraints. The scheme is especially optimized for the application systems with the star-topology master-slave network, i.e., the network formed by a portable data-logger (master) and several sensor nodes (slaves). The proposed scheme eliminates “non-effective” operation...
This paper presents an energy-efficient SoC dedicated for portable medical monitoring and intervention systems capable of closed-loop control. The SoC contains a 0.9V/165μW MCU and a dual-band RF block including a 403MHz transceiver for data link and a 915MHz receiver for wake-up link. The data link transceiver is composed of a 200kbps FSK transmitter and a 64kbps OOK receiver, consuming 5.58mW and...
A zero standby power remote control system used for household appliances is presented in this paper. The system consists of two parts. One is transmitting unit and power amplifier which send RF modulated signal. The other is receiving unit and power management block which recover energy, demodulate the RF signal and control the power switch of the household appliances. Both transmit and receive ends...
This paper presents an energy-efficient implementation of a real-time on-demand MAC protocol for medical wireless body sensor network (WBSN). Medical WBSN is focused on pervasive healthcare and medical applications, such as monitoring vital signs, making basic drug delivery, etc. The sensor nodes in the heterogeneous WBSN generally require different data rates, due to their differing functions. Additionally,...
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