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Building MechanoBeat 建筑MechanoBeat
IF 1 Q4 TELECOMMUNICATIONS Pub Date : 2023-02-01 DOI: 10.1145/3583571.3583573
Md. Farhan Tasnim Oshim, J. Killingback, Dave Follette, Huaishu Peng, Tauhidur Rahman
Knowing how and when people interact with their surroundings is crucial for constructing dynamic and intelligent environments. Despite the importance of this problem, an attainable and simple solution is still lacking. Current solutions often require powered sensors on monitored objects or users themselves. Many such systems use batteries [1-3], which are costly and time consuming to replace. Some powered systems connect to the grid, which may save swapping batteries, but at the price of restricted placement options. Other solutions use passive tags on monitored objects or require no tags at all, but many of these systems have prohibitive characteristics. For instance, camera-based systems [4,5] generally will not work if their view is occluded. Many other systems that rely on passive tags or do not use tags require direct line-of-sight or close proximity to work. As such, our goal was to design and develop small, cheap, easy-to-install tags that do not require any batteries, silicon chips or discrete electronic components, which can be monitored without direct line-of-sight.
了解人们如何以及何时与周围环境互动对于构建动态和智能环境至关重要。尽管这个问题很重要,但仍然缺乏一个可实现和简单的解决办法。目前的解决方案通常需要在被监控对象或用户本身上安装通电传感器。许多这样的系统使用电池[1-3],这是昂贵和耗时的更换。一些供电系统连接到电网,这可能会节省更换电池的时间,但代价是放置的选择受限。其他解决方案在被监视的对象上使用被动标签,或者根本不需要标签,但这些系统中的许多都具有令人望而却步的特性。例如,基于摄像头的系统[4,5]在视图被遮挡时通常无法工作。许多其他依赖被动标签或不使用标签的系统需要直接视距或靠近工作。因此,我们的目标是设计和开发小型,廉价,易于安装的标签,不需要任何电池,硅芯片或分立电子元件,可以在没有直接视线的情况下进行监控。
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引用次数: 0
Whisper 耳语
IF 1 Q4 TELECOMMUNICATIONS Pub Date : 2023-02-01 DOI: 10.1145/3583571.3583580
Tusher Chakraborty, Heping Shi, Zerina Kapetanovic, B. Priyantha, Deepak Vasisht, Binh Vu, Parag Pandit, Prasad Pillai, Y. Chabria, Andrew Nelson, Michael Daum, Ranveer Chandra
The epoch-making proliferation of Internet of Things (IoT) networks in recent years has brought connectivity to homes, cities, farms, and many other industries. ISM bands are accommodating most of these networks around the world. However, our experience from several global deployments has shown that such networks are bottlenecked by communication range and bandwidth. With these IoT deployment constraints in mind, we propose a new connectivity solution, Whisper [1], where IoT devices can opportunistically transmit data in the TV White Space (TVWS) spectrum, while protecting incumbents from receiving harmful interference.
近年来,物联网(IoT)网络具有划时代意义的扩散,为家庭、城市、农场和许多其他行业带来了连接。ISM频段正在适应世界上大多数这样的网络。然而,我们从几个全球部署的经验表明,这种网络受到通信范围和带宽的瓶颈。考虑到这些物联网部署限制,我们提出了一种新的连接解决方案Whisper[1],其中物联网设备可以在电视空白空间(TVWS)频谱中机会性地传输数据,同时保护现有设备免受有害干扰。
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引用次数: 7
A Low-Power mmWave Platform for the Internet of Things 物联网低功耗毫米波平台
IF 1 Q4 TELECOMMUNICATIONS Pub Date : 2023-02-01 DOI: 10.1145/3583571.3583575
M. Mazaheri, Omid Salehi-Abari
With the advancement of the Internet of Things (IoT), billions of devices will be connected to the Internet, enabling new applications such as digital twin, augmented reality, and smart home. These applications have placed a huge strain on today's wireless network. mmWave technology is promising to solve this problem by providing a large bandwidth over the very-high-frequency spectrum band. However, most mmWave radios and platforms have much higher power consumption than what IoT devices and their applications can afford. Hence, mmWave networks cannot be utilized in most IoT applications today. In this work, we present a novel low-power mmWave platform, which brings this technology to IoT applications. Our approach to design this platform is to take a holistic view and optimize the whole wireless system by considering practical challenges in mmWave communication. Our lowcost and low-power platform not only brings mmWave communication to IoT applications, but also enables researchers that do not have hardware background to work on mmWave research.
随着物联网(IoT)的发展,数十亿设备将连接到互联网,从而实现数字孪生、增强现实和智能家居等新应用。这些应用给今天的无线网络带来了巨大的压力。毫米波技术有望通过在非常高频的频谱带上提供大带宽来解决这个问题。然而,大多数毫米波无线电和平台的功耗远远高于物联网设备及其应用所能承受的功耗。因此,毫米波网络目前无法在大多数物联网应用中使用。在这项工作中,我们提出了一种新颖的低功耗毫米波平台,将该技术引入物联网应用。我们设计这个平台的方法是考虑毫米波通信中的实际挑战,以整体的观点和优化整个无线系统。我们的低成本和低功耗平台不仅为物联网应用带来毫米波通信,还使没有硬件背景的研究人员能够从事毫米波研究。
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引用次数: 0
PLatter
IF 1 Q4 TELECOMMUNICATIONS Pub Date : 2023-02-01 DOI: 10.1145/3583571.3583577
Junbo Zhang, Elahe Soltanaghai, Artur Balanuta, Reese Grimsley, Swarun Kumar, Anthony G. Rowe
Can we read ultra-low-power sensors in a large industrial or commercial building with a single reader using the power line system? As the manufacturing industry becomes more and more automated, IoT sensors are also being widely deployed inside industrial buildings. Given the significant cost associated with retrofitting an industrial building, a wired network for IoT installation might not be desirable. On the other hand, long-range wireless networks are either power-hungry (e.g., Wi-Fi or cellular), or support only a low data rate (e.g., LoRa). In this paper, we explore an alternative approach: leveraging the power line infrastructure to enable building-scale wireless backscatter communication.
我们可以在大型工业或商业建筑中使用电力线系统使用单个读取器读取超低功耗传感器吗?随着制造业的自动化程度越来越高,物联网传感器也被广泛部署在工业建筑中。考虑到与改造工业建筑相关的巨大成本,用于物联网安装的有线网络可能并不可取。另一方面,远程无线网络要么耗电(例如Wi-Fi或蜂窝网络),要么只支持低数据速率(例如LoRa)。在本文中,我们探索了一种替代方法:利用电力线基础设施实现建筑规模的无线反向散射通信。
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引用次数: 4
RF-Protect RF-Protect
IF 1 Q4 TELECOMMUNICATIONS Pub Date : 2023-02-01 DOI: 10.1145/3583571.3583579
Jayanth Shenoy, Zikun Liu, Bill Tao, Zachary Kabelac, Deepak Vasisht
In the last decade, both academia and industry have relied on FMCWradar based radio-frequency (RF) sensors to enable through-wall human tracking. These sensors capture reflections from human bodies to track occupancy of rooms [1], motion patterns of occupants [1,2], their daily activities [3], and their health metrics [4, 5]. Recently, Google has incorporated high frequency FMCW-based sensing into their smart home devices [6, 7], and Amazon received an FCC waiver [8] to conduct testing for the same.
在过去的十年中,学术界和工业界都依赖于基于FMCWradar的射频(RF)传感器来实现穿墙式人体跟踪。这些传感器捕获来自人体的反射,以跟踪房间的占用情况[1]、占用者的运动模式[1,2]、他们的日常活动[3]以及他们的健康指标[4,5]。最近,谷歌已经将基于高频fmcw的传感技术整合到他们的智能家居设备中[6,7],亚马逊也获得了FCC的豁免[8],可以对其进行测试。
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引用次数: 0
Bringing Underwater Networking to the 21st Century 将水下网络带入21世纪
IF 1 Q4 TELECOMMUNICATIONS Pub Date : 2023-02-01 DOI: 10.1145/3583571.3583578
Justin Chan, Tuochao Chen, Shyamnath Gollakota
The state of underwater networking today is similar to ARPANET back in the 1970s, when only a select few people with expensive hardware resources had access to the technology. We present the first acoustic system that brings underwater networking capabilities to existing mobile devices like smartphones and smart watches. Our software-only solution leverages audio sensors, i.e., microphones and speakers, ubiquitous in today's devices, to enable acoustic underwater communication between mobile devices. To achieve this, we design a communication system that adapts in real-time to differences in frequency responses across mobile devices, changes in multipath and noise levels at different locations and dynamic channel changes due to mobility. We evaluate our system in six different real-world underwater environments in the presence of boats, ships and people fishing and kayaking. With the release of Apple Watch Ultra that is specifically designed for underwater settings, our software-based approach has the potential to democratize underwater networking capabilities by making them widely available to anyone with a mobile device.
今天的水下网络状态类似于20世纪70年代的阿帕网,当时只有少数人拥有昂贵的硬件资源才能使用这项技术。我们展示了首个将水下网络功能引入智能手机和智能手表等现有移动设备的声学系统。我们的纯软件解决方案利用音频传感器,即麦克风和扬声器,在当今的设备中无处不在,以实现移动设备之间的声学水下通信。为了实现这一目标,我们设计了一种通信系统,该系统可以实时适应不同移动设备的频率响应差异、不同位置的多径和噪声水平变化以及由于移动性而导致的动态信道变化。我们在六种不同的真实水下环境中评估了我们的系统,这些环境中有船只、船只、钓鱼和划皮艇的人。随着专为水下环境设计的Apple Watch Ultra的发布,我们基于软件的方法有可能使水下网络功能大众化,让任何拥有移动设备的人都能广泛使用它们。
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引用次数: 0
The Future of Clean Computing May Be Dirty 清洁计算的未来可能是肮脏的
IF 1 Q4 TELECOMMUNICATIONS Pub Date : 2022-10-07 DOI: 10.1145/3568113.3568117
Colleen Josephson, W. Shuai, Gabriela Marcano, P. Pannuto, Josiah D. Hester, George Wells
The emergence of the Internet of Things and pervasive sensor networks have generated a surge of research in energy scavenging techniques. We know well that harvesting RF, solar, or kinetic energy enables the creation of battery-free devices that can be used where frequent battery changes or dedicated power lines are impractical. One unusual yet ubiquitous source of power is soil (earth itself) - or more accurately, bacterial communities in soil. Microbial fuel cells (MFCs) are electrochemical cells that harness the activities of microbes that naturally occur in soil, wetlands, and wastewater. MFCs have been a topic of research in environmental engineering and microbiology for decades, but are a relatively new topic in electronics design and research. Most low-power electronics have traditionally opted for batteries, RF energy, or solar cells. This is changing, however, as the limitations and costs of these energy sources hamper our ability to deploy useful systems that last for decades in challenging environments. If large-scale, long-term applications like underground infrastructure monitoring, smart farming, and sensing for conservation are to be possible, we must rethink the energy source.
物联网(Internet of Things)和无处不在的传感器网络的出现,催生了能量收集技术的研究热潮。我们很清楚,收集射频、太阳能或动能可以创造出无电池设备,这些设备可以在频繁更换电池或专用电源线不切实际的地方使用。一种不寻常但却无处不在的能源是土壤(土壤本身)——或者更准确地说,是土壤中的细菌群落。微生物燃料电池(mfc)是利用土壤、湿地和废水中自然存在的微生物活动的电化学电池。几十年来,mfc一直是环境工程和微生物学领域的研究课题,但在电子设计和研究中却是一个相对较新的课题。大多数低功耗电子产品传统上都选择电池、射频能量或太阳能电池。然而,这种情况正在改变,因为这些能源的局限性和成本阻碍了我们在具有挑战性的环境中部署持续数十年的有用系统的能力。如果地下基础设施监测、智能农业和保护传感等大规模长期应用成为可能,我们必须重新思考能源。
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引用次数: 0
LIMU-BERT LIMU-BERT
IF 1 Q4 TELECOMMUNICATIONS Pub Date : 2022-10-07 DOI: 10.1145/3568113.3568124
Huatao Xu, Pengfei Zhou, R. Tan, Mo Li, Guobin Shen
Deep learning greatly empowers Inertial Measurement Unit (IMU) sensors for a wide range of sensing applications. Most existing works require substantial amounts of wellcurated labeled data to train IMU-based sensing models, which incurs high annotation and training costs. Compared with labeled data, unlabeled IMU data are abundant and easily accessible. This article presents a novel representation learning model that can make use of unlabeled IMU data and extract generalized rather than task-specific features. With the representations learned via our model, task-specific models trained with limited labeled samples can achieve superior performances in typical IMU sensing applications, such as Human Activity Recognition (HAR).
深度学习极大地增强了惯性测量单元(IMU)传感器的广泛应用。大多数现有的工作需要大量精心策划的标记数据来训练基于imu的传感模型,这导致了高昂的注释和训练成本。与标记数据相比,未标记的IMU数据丰富且易于获取。本文提出了一种新的表征学习模型,该模型可以利用未标记的IMU数据并提取广义特征而不是特定于任务的特征。通过我们的模型学习表征,用有限的标记样本训练的特定任务模型可以在典型的IMU传感应用中获得优异的性能,例如人类活动识别(HAR)。
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引用次数: 1
A New Design Paradigm for Enabling Smart Headphonse 实现智能耳机的新设计范式
IF 1 Q4 TELECOMMUNICATIONS Pub Date : 2022-10-07 DOI: 10.1145/3568113.3568122
Xiaoran Fan, Longfei Shangguan, Siddharth Rupavatharam, Yanyong Zhang, Jie Xiong, Yunfei Ma, R. Howard
Headphones continue to grow more intelligent as new functions (e.g., touch-based gesture control) appear. These functions usually rely on auxiliary sensors (e.g., accelerometer and gyroscope) that are available in smart headphones. However, for those headphones that do not have such sensors, supporting these functions becomes a daunting task. This paper presents HeadFi, a new design paradigm for bringing intelligence to all headphones. Instead of adding auxiliary sensors into headphones, HeadFi turns the pair of drivers that are readily available inside all headphones into a versatile sensor to enable new applications, spanning across mobile health, user-interface, and context-awareness. HeadFi works as a plug-in peripheral connecting the headphones and the pairing device (e.g., a smartphone). The simplicity (can be as simple as just two resistors) and small form factor of this design lend itself to be embedded into the pairing device as an integrated circuit. We envision that HeadFi can serve as a vital supplementary solution to existing smart headphone design by directly transforming large amounts of existing "dumb" headphones into intelligent ones.
随着新功能(如基于触摸的手势控制)的出现,耳机的智能化程度不断提高。这些功能通常依赖于智能耳机中可用的辅助传感器(例如加速度计和陀螺仪)。然而,对于那些没有这种传感器的耳机来说,支持这些功能成为一项艰巨的任务。本文介绍了HeadFi,一种为所有耳机带来智能的新设计范例。HeadFi没有将辅助传感器添加到耳机中,而是将所有耳机中现成的一对驱动程序转换为多功能传感器,以实现跨越移动健康、用户界面和上下文感知的新应用。HeadFi是连接耳机和配对设备(例如智能手机)的外设。这种设计的简单性(可以简单到只有两个电阻器)和小尺寸使其能够作为集成电路嵌入到配对设备中。我们设想,HeadFi可以作为现有智能耳机设计的重要补充解决方案,直接将大量现有的“哑”耳机转变为智能耳机。
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引用次数: 1
Low-Latency Speculative Inference on Distributed Multi-Modal Data Streams 分布式多模态数据流的低延迟推测推断
IF 1 Q4 TELECOMMUNICATIONS Pub Date : 2022-10-07 DOI: 10.1145/3568113.3568121
Tianxing Li, Jin Huang, Erik Risinger, Deepak Ganesan
While multi-modal deep learning is useful in distributed sensing tasks like human tracking, activity recognition, and audio and video analysis, deploying state-of-the-art multi-modal models in a wirelessly networked sensor system poses unique challenges. The data sizes for different modalities can be highly asymmetric (e.g., video vs. audio), and these differences can lead to significant delays between streams in the presence of wireless dynamics. Therefore, a slow stream can significantly slow down a multimodal inference system in the cloud, leading to either increased latency (when blocked by the slow stream) or degradation in inference accuracy (if inference proceeds without waiting).
虽然多模态深度学习在人体跟踪、活动识别、音频和视频分析等分布式传感任务中很有用,但在无线网络传感器系统中部署最先进的多模态模型带来了独特的挑战。不同模式的数据大小可能是高度不对称的(例如,视频与音频),这些差异可能导致存在无线动态的流之间的显著延迟。因此,慢流会显著降低云中的多模态推理系统的速度,导致延迟增加(当被慢流阻塞时)或推理精度降低(如果推理不等待就进行)。
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引用次数: 13
期刊
GetMobile-Mobile Computing & Communications Review
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