The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Hyeong-seok Kim - One of the best experts on this subject based on the ideXlab platform.
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Circuit and System Designs of Ultra-Low Power Sensor Nodes With Illustration in a Miniaturized GNSS Logger for Position Tracking: Part II—Data Communication, Energy Harvesting, Power Management, and Digital Circuits
IEEE Transactions on Circuits and Systems I-regular Papers, 2017Co-Authors: Taekwang Jang, Dongkwun Kim, Zhiyoong Foo, Gyouho Kim, Benjamin Kempke, Michael B. Henry, Nikolaos Chiotellis, Carl Pfeiffer, Yejoong Kim, Hyeong-seok KimAbstract:This two-part paper reviews recent innovations in circuit design that have accelerated the miniaturization of Sensor nodes. In this second part of the paper, we focus on key building blocks of Miniaturized Sensor nodes, such as data transceivers, energy harvesters, power management units, and digital logic circuits. System level design considerations are also discussed to provide guidelines for the design of a Miniaturized system. As an example prototype design, a 2.7-cm3 global navigation satellite system (GNSS) logger is proposed. This paper includes a die-stacked Sensor platform composed of an ARM cortex M0 processor, energy harvester, power management unit, solar cell, optical receiver, Sensor layer, and RF transmitter that exploits the discussed design techniques for ultra-low power operation. The GNSS logger can store GNSS signals of >1 k positions on a single battery charging without additional energy harvesting.
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circuit and system designs of ultra low power Sensor nodes with illustration in a Miniaturized gnss logger for position tracking part i analog circuit techniques
IEEE Transactions on Circuits and Systems I-regular Papers, 2017Co-Authors: Taekwang Jang, Dongkwun Kim, Zhiyoong Foo, Gyouho Kim, Benjamin Kempke, Michael B. Henry, Nikolaos Chiotellis, Carl Pfeiffer, Yejoong Kim, Hyeong-seok KimAbstract:This paper, split into Parts I and II, reviews recent innovations in circuit design that have accelerated the miniaturization of Sensor nodes. Design techniques for key building blocks, such as Sensor interfaces, timing reference, data communication, energy harvesting, and power management are reviewed. In particular, Part I introduces analog circuit techniques and Sensor interfaces for Miniaturized Sensor nodes. The energy budget of such system is highly restricted due to the small battery volume. Therefore, ultra-low power design techniques are critical enablers and are reviewed. Design techniques for compact monolithic integration are also discussed.
Junichi Suzuki - One of the best experts on this subject based on the ideXlab platform.
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Cloud-assisted Wireless Body Area Networks
Information Sciences, 2014Co-Authors: Sana Ullah, Han-chieh Chao, Athanasios V. Vasilakos, Junichi SuzukiAbstract:Wireless Body Area Networks (WBANs) have emerged as a promising technology for medical and non-medical applications. WBANs consist of a number of Miniaturized, portable, and autonomous Sensor nodes that are used for long-term health monitoring of patients. These Sensor nodes continuously collect information of patients, which are used for ubiquitous health monitoring. In addition, WBANs may be used for managing catastrophic events and increasing the effectiveness and performance of rescue forces. The huge amount of data collected by WBAN nodes demands scalable, on-demand, powerful, and secure storage and processing infrastructure. Cloud computing is expected to play a significant role in achieving the aforementioned objectives. The cloud computing environment links different devices ranging from Miniaturized Sensor nodes to high-performance supercomputers for delivering people-centric and context-centric services to the individuals and industries. The possible integration of WBANs with cloud computing (WBAN-cloud) will introduce viable and hybrid platform that must be able to process the huge amount of data collected from multiple WBANs. This WBAN-cloud will enable users (including physicians and nurses) to globally access the processing and storage infrastructure at competitive costs. Because WBANs forward useful and life-critical information to the cloud – which may operate in distributed and hostile environments, novel security mechanisms are required to prevent malicious interactions to the storage infrastructure. Both the cloud providers and the users must take strong security measures to protect the storage infrastructure
I M Tiginyanu - One of the best experts on this subject based on the ideXlab platform.
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synthesis and characterization of cu doped zno one dimensional structures for Miniaturized Sensor applications with faster response
Sensors and Actuators A-physical, 2013Co-Authors: Lee Chow, Oleg Lupan, Guangyu Chai, Hani Khallaf, Luis K Ono, Roldan B Cuenya, I M TiginyanuAbstract:Abstract Detection of chemicals and biological species is an important issue to human health and safety. In this paper, we report the hydrothermal synthesis at 95 °C of Cu-doped ZnO low-dimensional rods for room-temperature (RT) sensing applications and enhanced Sensor performances. X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, Raman and photoluminescence are used to characterize the material properties. To demonstrate the suitability of the Cu-doped ZnO rods for gas Sensor applications and for comparison with pure ZnO, we fabricated a double rod device using Focused Ion Beam. The responses of pure-ZnO and Cu-doped ZnO rods studied in exactly the same condition are reported. We found that Cu-ZnO Sensors have enhanced RT sensitivity, faster response time, and good selectivity. Miniaturized Cu-ZnO rod-based Sensors can serve as a good candidate for effective H2 detectors with low power consumption.
Taekwang Jang - One of the best experts on this subject based on the ideXlab platform.
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Circuit and System Designs of Ultra-Low Power Sensor Nodes With Illustration in a Miniaturized GNSS Logger for Position Tracking: Part II—Data Communication, Energy Harvesting, Power Management, and Digital Circuits
IEEE Transactions on Circuits and Systems I-regular Papers, 2017Co-Authors: Taekwang Jang, Dongkwun Kim, Zhiyoong Foo, Gyouho Kim, Benjamin Kempke, Michael B. Henry, Nikolaos Chiotellis, Carl Pfeiffer, Yejoong Kim, Hyeong-seok KimAbstract:This two-part paper reviews recent innovations in circuit design that have accelerated the miniaturization of Sensor nodes. In this second part of the paper, we focus on key building blocks of Miniaturized Sensor nodes, such as data transceivers, energy harvesters, power management units, and digital logic circuits. System level design considerations are also discussed to provide guidelines for the design of a Miniaturized system. As an example prototype design, a 2.7-cm3 global navigation satellite system (GNSS) logger is proposed. This paper includes a die-stacked Sensor platform composed of an ARM cortex M0 processor, energy harvester, power management unit, solar cell, optical receiver, Sensor layer, and RF transmitter that exploits the discussed design techniques for ultra-low power operation. The GNSS logger can store GNSS signals of >1 k positions on a single battery charging without additional energy harvesting.
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circuit and system designs of ultra low power Sensor nodes with illustration in a Miniaturized gnss logger for position tracking part i analog circuit techniques
IEEE Transactions on Circuits and Systems I-regular Papers, 2017Co-Authors: Taekwang Jang, Dongkwun Kim, Zhiyoong Foo, Gyouho Kim, Benjamin Kempke, Michael B. Henry, Nikolaos Chiotellis, Carl Pfeiffer, Yejoong Kim, Hyeong-seok KimAbstract:This paper, split into Parts I and II, reviews recent innovations in circuit design that have accelerated the miniaturization of Sensor nodes. Design techniques for key building blocks, such as Sensor interfaces, timing reference, data communication, energy harvesting, and power management are reviewed. In particular, Part I introduces analog circuit techniques and Sensor interfaces for Miniaturized Sensor nodes. The energy budget of such system is highly restricted due to the small battery volume. Therefore, ultra-low power design techniques are critical enablers and are reviewed. Design techniques for compact monolithic integration are also discussed.
Gyouho Kim - One of the best experts on this subject based on the ideXlab platform.
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Circuit and System Designs of Ultra-Low Power Sensor Nodes With Illustration in a Miniaturized GNSS Logger for Position Tracking: Part II—Data Communication, Energy Harvesting, Power Management, and Digital Circuits
IEEE Transactions on Circuits and Systems I-regular Papers, 2017Co-Authors: Taekwang Jang, Dongkwun Kim, Zhiyoong Foo, Gyouho Kim, Benjamin Kempke, Michael B. Henry, Nikolaos Chiotellis, Carl Pfeiffer, Yejoong Kim, Hyeong-seok KimAbstract:This two-part paper reviews recent innovations in circuit design that have accelerated the miniaturization of Sensor nodes. In this second part of the paper, we focus on key building blocks of Miniaturized Sensor nodes, such as data transceivers, energy harvesters, power management units, and digital logic circuits. System level design considerations are also discussed to provide guidelines for the design of a Miniaturized system. As an example prototype design, a 2.7-cm3 global navigation satellite system (GNSS) logger is proposed. This paper includes a die-stacked Sensor platform composed of an ARM cortex M0 processor, energy harvester, power management unit, solar cell, optical receiver, Sensor layer, and RF transmitter that exploits the discussed design techniques for ultra-low power operation. The GNSS logger can store GNSS signals of >1 k positions on a single battery charging without additional energy harvesting.
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circuit and system designs of ultra low power Sensor nodes with illustration in a Miniaturized gnss logger for position tracking part i analog circuit techniques
IEEE Transactions on Circuits and Systems I-regular Papers, 2017Co-Authors: Taekwang Jang, Dongkwun Kim, Zhiyoong Foo, Gyouho Kim, Benjamin Kempke, Michael B. Henry, Nikolaos Chiotellis, Carl Pfeiffer, Yejoong Kim, Hyeong-seok KimAbstract:This paper, split into Parts I and II, reviews recent innovations in circuit design that have accelerated the miniaturization of Sensor nodes. Design techniques for key building blocks, such as Sensor interfaces, timing reference, data communication, energy harvesting, and power management are reviewed. In particular, Part I introduces analog circuit techniques and Sensor interfaces for Miniaturized Sensor nodes. The energy budget of such system is highly restricted due to the small battery volume. Therefore, ultra-low power design techniques are critical enablers and are reviewed. Design techniques for compact monolithic integration are also discussed.
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ultra low power circuit techniques for Miniaturized Sensor nodes
International Conference on Electron Devices and Solid-State Circuits, 2015Co-Authors: Seokhyeon Jeong, Gyouho Kim, Yejoong Kim, Wanyeong Jung, David Blaauw, Dennis SylvesterAbstract:Interest in Miniaturized wireless Sensor nodes has been growing rapidly over past years. These microsystems have unlimited potential applications, particularly in the sensing area. However, limited battery capacity and energy sources due to very small form factor leads to many design challenges. This paper highlights recent low power circuit techniques for Miniaturized systems and demonstrates implementation of a millimeter-scale ultra-low power Sensor node.