the oneM2M global initiative has been working to standardize horizontal machine-to-machine (M2M) and the Internet of things (IoT) service layer specifications for globally interoperable M2M/IoT solutions. However, the...
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ISBN:
(纸本)9781450336314
the oneM2M global initiative has been working to standardize horizontal machine-to-machine (M2M) and the Internet of things (IoT) service layer specifications for globally interoperable M2M/IoT solutions. However, there exist a myriad of embeddedsensorsystems not complying with oneM2M, such as de facto IoT standards (e.g., AllJoyn and IoTivity). In this paper, we present our effort in global interworking of IoT systems across multipleM2M/IoT standards, in particular, on a global scale. By implementing specialized oneM2M entities for interworking, interworking proxy entities (IPEs), we demonstrate a promise of globally interoperable IoT systems interconnected with all kinds of embeddedsystems.
this paper presents a non-invasive human activity monitoring system with a low-cost Doppler sensor and a pair of radio frequency (RF) sensors. this radio-based system combines the strengths of two sensing modalities: ...
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ISBN:
(纸本)9781450336314
this paper presents a non-invasive human activity monitoring system with a low-cost Doppler sensor and a pair of radio frequency (RF) sensors. this radio-based system combines the strengths of two sensing modalities: fine granularity from a Doppler sensor and large sensing coverage from an RF link. the system is capable of detecting subtle human motion such as breathing, as well as walking in a large area. We deploy the system and perform experiments in a 5.5 m by 7.5 m room to classify four activities. Experimental results show that the average classification rate is 90%, 31% more accurate than a single Doppler system.
Face recognition is one of the most popular research problems on various platforms. New research issues arise when it comes to resource constrained devices, such as smart glasses, due to the overwhelming computation a...
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ISBN:
(纸本)9781450336314
Face recognition is one of the most popular research problems on various platforms. New research issues arise when it comes to resource constrained devices, such as smart glasses, due to the overwhelming computation and energy requirements of the accurate face recognition methods. In this paper, we have prototyped a robust and efficient sensor assisted face recognition system on smart glasses by exploring the power of multimodal sensors including the camera and Inertial Measurement Unit (IMU) sensors. Evaluation shows that the prototyped system is up to 10% more accurate than the state-of-the-art face recognition methods while its computational cost is in the same order as an efficient benchmark method (e.g., Eigenface).
In this paper we propose a novel algorithm for tracking people in highly dynamic industrial settings, such as construction sites. We observed both short term and long term changes in the environment;people were allowe...
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ISBN:
(纸本)9781450336314
In this paper we propose a novel algorithm for tracking people in highly dynamic industrial settings, such as construction sites. We observed both short term and long term changes in the environment;people were allowed to walk in different parts of the site on different days, the field of view of fixed cameras changed over time withthe addition of walls, whereas radio and magnetic maps proved unstable withthe movement of large structures. To make things worse, the uniforms and helmets that people wear for safety make them very hard to distinguish visually, necessitating the use of additional sensor modalities. In order to address these challenges, we designed a positioning system that uses both anonymous and id-linked sensor measurements and explores the use of cross-modality training to deal with environment dynamics. the system is evaluated in a real construction site and is shown to outperform state of the art multi-target tracking algorithms designed to operate in relatively stable environments.
Cyber-physical systems (CPS) use distributed feedback loops to control physical processes. Designing practical distributed CPS controllers often benefits from a logically centralized approach, where each node computes...
ISBN:
(纸本)9781450342636
Cyber-physical systems (CPS) use distributed feedback loops to control physical processes. Designing practical distributed CPS controllers often benefits from a logically centralized approach, where each node computes the control law locally based on global knowledge of the system state. We present Mixer, an all-to-all communication scheme that enables all nodes in a multi-hop low-power wireless network to exchange sizable packets with one another. Mixer's design integrates synchronous transmissions with random linear network coding, harnessing the broadcast nature of the wireless medium. Results from testbed experiments with an early Mixer prototype show that our design reduces latency by 1.1-2.6× for 16-96-byte packets compared withthe state of the art, while providing a reliability above 99.9% in most settings we test.
Full-duplex wireless information and power transfer allows the implementation of wireless sensor networks without batteries. In a full-duplex wireless network, an access point and sensor nodes transmit information and...
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ISBN:
(纸本)9781450336314
Full-duplex wireless information and power transfer allows the implementation of wireless sensor networks without batteries. In a full-duplex wireless network, an access point and sensor nodes transmit information and power signals simultaneously. However, this simultaneous transmission leads to a collision problem. To solve this collision problem, we propose a media access control (MAC) protocol, namely the Full-Duplex Simultaneous Wireless Information and Power Transfer Medium Access Control (FD-SWIPT MAC) protocol, for full-duplex wireless information and power transfer. the evaluation results show that the proposed FD-SWIPT MAC protocol outperforms other MAC protocols.
We demonstrate the capabilities of Bolt, an ultra-low-power processor interconnect for the composable construction of new multi-processor wireless embedded platforms. Bolt provides asynchronous bidirectional communica...
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ISBN:
(纸本)9781450336314
We demonstrate the capabilities of Bolt, an ultra-low-power processor interconnect for the composable construction of new multi-processor wireless embedded platforms. Bolt provides asynchronous bidirectional communication between two processors with predictable message transfer times. In this way, Bolt solves the resource interference problem inherent in today's wireless embedded platforms, enabling simpler and more robust system designs with minimal resource overhead. Using our Bolt prototype implemented on a state-of-the-art microcontroller, we demonstrate Bolt's composability and decoupling in time, power, and clock domains.
Recently with a push towards "IoTification", the world foresees a sharp rise in the number of devices with wireless networking capabilities. It is inevitable to anticipate an enormous increase in both self a...
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the development of new communications protocols in the Internet Of things aim low power embeddedsystems. Protocols are designed to be reliable and not to have a large bandwidth. these technologies have each their spe...
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ISBN:
(纸本)9781509026715
the development of new communications protocols in the Internet Of things aim low power embeddedsystems. Protocols are designed to be reliable and not to have a large bandwidth. these technologies have each their specificities and try to become the reference standard. this article explain how researchers and manufacturers need to create new hybrid and multi-technologies networks in order to develop complex systems which can adapt themselves to the constraints.
Current Wireless sensor Networks (WSNs) approaches do not provide an efficient and secure code dissemination function due to emerging issues of IoT applications. In this work, we adopt a multicast approach instead of ...
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ISBN:
(纸本)9781450336314
Current Wireless sensor Networks (WSNs) approaches do not provide an efficient and secure code dissemination function due to emerging issues of IoT applications. In this work, we adopt a multicast approach instead of the existing end-toend or epidemic approaches. In order to enable the multicast approach, we propose an efficient/robust group key distribution scheme. We will evaluate and quantify the performance of our prototype implementation in a public testbed, while emulating several practical IoT settings, and show our security measures against known attack models.
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