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In this paper, soft magnetic Mn–Zn ferrite samples have been prepared through oxide processes. The magnetic properties and the phase structures were investigated. It was found that the optimal sintering temperature is about 1360 °C. The initial permeability of the samples is 1700–2300, Curie temperature $T_{c}$ is about 140 °C−180 °C, and cutoff frequency fr is about 1 MHz. Moreover, the initial...
As the development of the information technology and intelligence of the society, wireless sensor networks have been widely applied in many fields of life and production [1-3]. In many practical engineering applications, it is often expected to be able to conduct real-time monitoring to the inner situation of some media. One ideal way to fulfill such objectives is to embed the wireless sensors inside...
This paper explores the vision of a dual-use sensing/communication system based on Cognitive Radio Network (CRN). The motivation of the paper is to push the convergence of sensing and communication systems into a unified cognitive network. The concept design of this sensing/communication system is presented along with potential functions and challenges. A through tree target detection using real data...
Wireless tomography, a novel approach to remote sensing, is proposed in Part I of this series. The methodology, literature review, related work, and system engineering are presented. Concrete algorithms and hardware platforms are implemented to demonstrate this concept. Self-cohering tomography is studied in depth. More research will be reported, following this initiative.
This is the second paper in a series on a new initiative of wireless tomography. The goal is to combine two areas: wireless communication and radio tomography. This paper studies wireless tomography from a system engineering's point of view. Machine learning and waveform diversity will be applied to wireless tomography. The potential system architecture for wireless tomography will also be given.
Health and usage monitoring (HUMS) as a technique for online test, diagnosis or prognosis of structures and systems has evolved as a key technology for future critical systems. The application of HUMS technology requires a portfolio of reliable miniaturized sensors, capable of delivering "intelligence" on the internal and external environment of a system or structure. This paper proposes...
Energy conservation, coverage and connectivity are three critical application requirements in wireless sensor networks, especially in sensor networks for vehicular applications. Related researches have either concerned coverage, connectivity and energy conservation separately or required sensing/transmission range restrictions. In this study, the authors aim to maximise the network lifetime by redundant...
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