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2020 31st Irish Signals and Systems Conference (ISSC)最新文献

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Low Cost Embedded Multimodal Opto-Inertial Human Motion Tracking System 低成本嵌入式多模态光惯性人体运动跟踪系统
Pub Date : 2020-06-01 DOI: 10.1109/ISSC49989.2020.9180190
Mariusz P. Wilk, M. Walsh, B. O’flynn
Human motion tracking systems are widely used in various application spaces, such as motion capture, rehabilitation, or sports. There exists a number of such systems in the State-Of-The-Art (SOA) that vary in price, complexity, accuracy and the target applications. With the continued advances in system integration and miniaturization, wearable motion trackers gain in popularity in the research community. The opto-inertial trackers with multimodal sensor fusion algorithms are some of the common approaches found in SOA. However, these trackers tend to be expensive and have high computational requirements. In this work, we present a prototype version of our opto-inertial, motion tracking system that offers a low-cost alternative. The 3D position and orientation are determined by fusing optical and inertial sensor data together with knowledge about two external reference points using a purpose-designed data fusion algorithm. An experimental validation was carried out on one of the use cases that this system is intended for, i.e. barbell squat in strength training. The results showed that the total RMSE in position and orientation was 32.8 mm and 0.89 degree, respectively. It operated in real-time at 20 frames per second.
人体运动跟踪系统广泛应用于各种应用领域,如运动捕捉、康复或运动。在最先进的(SOA)中存在许多这样的系统,它们在价格、复杂性、准确性和目标应用程序方面各不相同。随着系统集成和小型化的不断发展,可穿戴运动追踪器在研究界越来越受欢迎。采用多模态传感器融合算法的光惯性跟踪器是SOA中常见的一些方法。然而,这些跟踪器往往是昂贵的,有很高的计算需求。在这项工作中,我们展示了我们的光惯性运动跟踪系统的原型版本,提供了一种低成本的替代方案。利用专门设计的数据融合算法,通过融合光学和惯性传感器数据以及关于两个外部参考点的知识来确定三维位置和方向。对该系统的一个用例进行了实验验证,即力量训练中的杠铃深蹲。结果表明,在位置和方向上的总RMSE分别为32.8 mm和0.89°。它以每秒20帧的速度实时运行。
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引用次数: 1
Digital Image Exchange using a No-key(s) Protocol with Phase-only Encryption 数字图像交换使用无密钥(s)协议与阶段加密
Pub Date : 2020-06-01 DOI: 10.1109/ISSC49989.2020.9180215
J. Blackledge, N. Mosola
This paper considers an algorithm for transferring a digital image over an open network using a No-key(s) Protocol or Three-Way Pass and phase-only encryption/decryption. After providing a short study on the theoretical background to the method, an algorithm is presented on a step-by-step basis. Cryptanalysis is undertaken for the three intercept and single intercept cases, when it is assumed that the encrypted data is intercepted in its entirety for each pass or for any single pass, respectively. The algorithm focuses on the exchange of a JPEG image although in principle, the approach is independent of the format of the image file that is used. Prototype MATLAB functions are provided for the validation of the approach and for further development by interested readers.
本文研究了一种在开放网络上使用无密钥协议或三通和阶段加密/解密传输数字图像的算法。在对该方法的理论背景进行了简短的研究之后,逐步提出了一种算法。对三次拦截和单次拦截情况进行密码分析,分别假设加密数据在每次通过或任何单次通过时被全部拦截。该算法侧重于JPEG图像的交换,尽管原则上,该方法与所使用的图像文件的格式无关。提供了原型MATLAB函数,以验证该方法并供感兴趣的读者进一步开发。
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引用次数: 0
Time-Domain Multiply-Accumulator using Digital-to-Time Multiplier for CNN Processors in 28-nm CMOS 使用数字时间乘法器的时域乘加器用于CNN处理器在28纳米CMOS
Pub Date : 2020-06-01 DOI: 10.1109/ISSC49989.2020.9180202
Xutong Wu, T. Siriburanon, R. Staszewski
This paper proposes a time-domain multiply-accumulator (MAC) circuit exploiting the use of a digital-to-time multiplier (DTM) unit for performing convolutional operations and designed in 28nm CMOS. As the foundational calculation of state-of-the-art convolutional neural network (CNN) models, convolutional operation could normally be executed millions of times in one CNN task. The proposed circuit is designed to support this large computational resource requirement during the CNN computations. It is running in time-domain with 6-bit resolution (1 sign bit) and performs calculations based on corresponding time delays. Compared with other analog-domain propositions, time-domain designs perform better, with higher operating frequencies up to 50 MHz. In schematic simulations, the proposed DTM unit, operating with 5 bits, achieves 0.1 GOPS ideal throughput and consumes 74.79 µW at 1.0V supply.
本文提出了一种利用数字时间乘法器(DTM)单元进行卷积运算的时域乘加器(MAC)电路,并设计在28nm CMOS上。卷积运算作为最先进的卷积神经网络(CNN)模型的基础计算,在一个CNN任务中通常可以执行数百万次。所提出的电路旨在支持CNN计算期间的大量计算资源需求。它在6位分辨率(1符号位)的时域中运行,并根据相应的时间延迟进行计算。与其他模拟域方案相比,时域设计性能更好,工作频率高达50 MHz。在原理图仿真中,所提出的DTM单元以5位工作,在1.0V电源下达到0.1 GOPS的理想吞吐量和74.79µW的功耗。
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引用次数: 0
Detection of ringforts from aerial photography using machine learning 利用机器学习从航空摄影中检测环形堡垒
Pub Date : 2020-06-01 DOI: 10.1109/ISSC49989.2020.9180159
Keith Phelan, D. Riordan
Ringforts are one of the most populous field monuments in Ireland with approximately 45000 examples surviving to date. Their distribution and dispersal patterns are key to our understanding of the habitation patterns of our ancestors. Due to the nature of these structures and the construction materials used, centuries of abandonment means that they often go unnoticed at ground level, while being easily identified from an aerial perspective. The increased requirements of land use for the development of urban areas, infrastructure and increased industrialised farming practices means that these monuments are under threat. Recent developments in the field of machine learning coupled with access to hi-resolution multi-spectral satellite imagery from Open Data sources, presents the opportunity to investigate the development of a system for the automated detection of these features. If successful, such a system could provide an automated, efficient and cost effective tool for the detection of interference or destruction of known sites as well as the discovery of new ones.
Ringforts是爱尔兰最受欢迎的野外遗迹之一,至今约有45000个幸存下来。它们的分布和扩散模式是我们了解祖先居住模式的关键。由于这些结构的性质和所使用的建筑材料,几个世纪的废弃意味着它们通常在地面上不被注意,而从空中的角度很容易识别。城市地区、基础设施和工业化农业的发展对土地使用的要求越来越高,这意味着这些纪念碑正受到威胁。机器学习领域的最新发展,加上来自开放数据源的高分辨率多光谱卫星图像的访问,为研究自动检测这些特征的系统的开发提供了机会。如果成功,这种系统可以提供一种自动化、高效率和成本效益高的工具,用于探测对已知场址的干扰或破坏以及发现新的场址。
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引用次数: 4
Open Source Power Quality Meter with cloud monitoring 开源电能质量计与云监控
Pub Date : 2020-06-01 DOI: 10.1109/ISSC49989.2020.9180176
Cathal Ferry, J. Connolly
Energy saving and energy conservation are fast becoming key ideologies in the construction and creation of modern data centres and IT infrastructure. This applies to large scale deployments and on smaller to more intermediate scale sites. Data centres consume large quantities of energy and contribute to carbon dioxide (CO2) emissions. Reducing CO2output using methods such as sustainable power generation and better energy efficiency can help mitigate against the effects of global warming. This paper proposes methods of saving energy in IT equipment by monitoring key power statistics such as power factor to determine the efficiency of the power being used by network equipment. This is achieved using an open-source power factor meter which is not only low cost but also accurate. The meter measures power factor as well as true power, apparent power, reactive power, mains voltage, current, and mains frequency to determine the energy efficiency of the installation or equipment. Readings are measured using three primary sensors; a current transformer, voltage transformer, and a mains frequency sensor. The system is designed for use with single-phase systems and incorporates a local HMI and a cloud-based CMS system. All of the software and hardware elements used are open source and therefore low cost.
节能和节约能源正迅速成为建设和创建现代数据中心和信息技术基础设施的关键思想。这既适用于大规模部署,也适用于较小规模到中等规模的站点。数据中心消耗大量能源,并导致二氧化碳(CO2)排放。使用可持续发电和提高能源效率等方法减少二氧化碳排放量有助于缓解全球变暖的影响。本文提出了通过监控功率因数等关键功率统计数据来确定网络设备用电效率的IT设备节能方法。这是通过使用开源功率因数计实现的,该计不仅成本低,而且精度高。该仪表可测量功率因数以及真功率、视在功率、无功功率、市电电压、电流和市电频率,以确定装置或设备的能效。读数测量使用三个主要传感器;一个电流互感器,电压互感器和一个主频率传感器。该系统设计用于单相系统,并结合了本地HMI和基于云的CMS系统。所有使用的软件和硬件元素都是开源的,因此成本很低。
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引用次数: 1
On-demand updates after a node failure in a wireless network 无线网络中节点故障后的按需更新
Pub Date : 2020-06-01 DOI: 10.1109/ISSC49989.2020.9180207
Davide Villa, Chih-kuang Lin, Adam Kuenzi, Michael Lang
Wireless networks are ubiquitous in our modern world, and we rely more and more on their continuous and reliable operation for battery-powered devices. Networks that self-maintain and self-heal are inherently more reliable. We study efficient and effective network self-healing and update methods for routing recovery following routing failures in a wireless multi-hop network. Network update processes are important since they enable local nodes to maintain the latest and updated neighbor information for routing given the network changes caused by failures. Network update also introduces control signals overhead. In this paper, we investigate the trade-off between routing performance and overhead cost with different network update algorithms and we characterize the performance of the proposed algorithms using network simulations. We show that network updates have positive impacts on routing. In particular, the on-demand route update method provides better results among compared techniques. The improvement is varying depending on the network topology and failure condition scenario.
无线网络在我们的现代世界中无处不在,我们越来越依赖于电池供电设备的连续可靠运行。自我维护和自我修复的网络本质上更可靠。研究了无线多跳网络中路由故障后的自愈和更新方法。网络更新过程很重要,因为它们使本地节点能够在故障引起的网络更改的情况下维护最新和更新的邻居信息。网络更新也引入了控制信号开销。在本文中,我们研究了不同网络更新算法的路由性能和开销成本之间的权衡,并使用网络模拟来表征所提出算法的性能。我们发现网络更新对路由有积极的影响。其中,按需路由更新方法在比较技术中具有较好的效果。根据网络拓扑和故障条件场景的不同,改进的效果有所不同。
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引用次数: 0
Investigating Supervised Machine Learning Techniques for Channel Identification in Wireless Sensor Networks 无线传感器网络中信道识别的监督机器学习技术研究
Pub Date : 2020-06-01 DOI: 10.1109/ISSC49989.2020.9180209
George D. O’Mahony, Philip J. Harris, Colin C. Murphy
Knowledge of the wireless channel is pivotal for wireless communication links but varies for multiple reasons. The radio spectrum changes due to the number of connected devices, demand, packet size or services in operation, while fading levels, obstacles, path losses, and spurious (non-)malicious interference fluctuate in the physical environment. Typically, these channels are applicable to the time series class of data science problems, as the primary data points are measured over a period. In the case of wireless sensor networks, which regularly provide the device to access point communication links in Internet of Things applications, determining the wireless channel in operation permits channel access. Generally, a clear channel assessment is performed to determine whether a wireless transmission can be executed, which is an approach containing limitations. In this study, received in-phase (I) and quadrature-phase (Q) samples are collected from the wireless channel using a software-defined radio (SDR) based procedure and directly analyzed using python and Matlab. Features are extracted from the probability density function and statistical analysis of the received I/Q samples and used as the training data for the two chosen machine learning methods. Data is collected and produced over wires, to avoid interfering with other networks, using SDRs and Raspberry Pi embedded devices, which utilize available open-source libraries. Data is examined for the signal-free (noise), legitimate signal (ZigBee) and jamming signal (continuous wave) cases in a live laboratory environment. Support vector machine and Random Forest models are each designed and compared as channel identifiers for these signal types.
无线信道的知识对于无线通信链路是至关重要的,但由于多种原因而有所不同。无线电频谱由于连接设备的数量、需求、分组大小或运行中的业务而变化,而衰落水平、障碍物、路径损失和虚假(非)恶意干扰在物理环境中波动。通常,这些通道适用于数据科学问题的时间序列类,因为主要数据点是在一段时间内测量的。在物联网应用中,无线传感器网络定期为设备提供接入点通信链路,确定运行中的无线通道允许通道访问。通常,通过清晰信道评估来确定是否可以执行无线传输,这是一种有局限性的方法。在本研究中,使用基于软件定义无线电(SDR)的程序从无线信道中收集接收到的同相(I)和正交相(Q)样本,并使用python和Matlab直接进行分析。从接收到的I/Q样本的概率密度函数和统计分析中提取特征,作为所选择的两种机器学习方法的训练数据。数据是通过电线收集和产生的,以避免干扰其他网络,使用sdr和树莓派嵌入式设备,利用可用的开源库。在现场实验室环境中对无信号(噪声)、合法信号(ZigBee)和干扰信号(连续波)进行了数据检查。分别设计并比较了支持向量机和随机森林模型作为这些信号类型的通道标识符。
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引用次数: 3
Dynamic Countermeasure Knowledge for Intrusion Response Systems 入侵响应系统的动态对策知识
Pub Date : 2020-06-01 DOI: 10.1109/ISSC49989.2020.9180198
Kieran Hughes, K. Mclaughlin, S. Sezer
Significant advancements in Intrusion Detection Systems has led to improved alerts. However, Intrusion Response Systems which aim to automatically respond to these alerts, is a research area which is not yet advanced enough to benefit from full automation. In Security Operations Centres, analysts can implement countermeasures using knowledge and past experience to adapt to new attacks. Attempts at automated Intrusion Response Systems fall short when a new attack occurs to which the system has no specific knowledge or effective countermeasure to apply, even leading to overkill countermeasures such as restarting services and blocking ports or IPs. In this paper, a countermeasure standard is proposed which enables countermeasure intelligence sharing, automated countermeasure adoption and execution by an Intrusion Response System. An attack scenario is created on an emulated network using the Common Open Research Emulator, where an insider attack attempts to exploit a buffer overflow on an Exim mail server. Experiments demonstrate that an Intrusion Response System with dynamic countermeasure knowledge can stop attacks that would otherwise succeed with a static predefined countermeasure approach.
入侵检测系统的重大进步导致了警报的改进。然而,旨在自动响应这些警报的入侵响应系统是一个尚不够先进的研究领域,无法从完全自动化中受益。在安全运营中心,分析人员可以利用知识和过去的经验实施对策,以适应新的攻击。当新的攻击发生时,系统没有特定的知识或有效的应对措施,甚至导致重新启动服务和阻止端口或ip等过度的应对措施,自动入侵响应系统的尝试就会失败。本文提出了一种对抗标准,实现了入侵响应系统对对抗情报的共享、对对抗的自动采用和执行。使用Common Open Research Emulator在模拟网络上创建攻击场景,其中内部攻击试图利用Exim邮件服务器上的缓冲区溢出。实验表明,具有动态对抗知识的入侵响应系统能够有效阻止静态预定义对抗方法无法成功实施的攻击。
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引用次数: 4
Generative Augmented Dataset and Annotation Frameworks for Artificial Intelligence (GADAFAI) 面向人工智能的生成增强数据集和注释框架(GADAFAI)
Pub Date : 2020-06-01 DOI: 10.1109/ISSC49989.2020.9180200
P. Corcoran, Hossein Javidnia, Joseph Lemley, Viktor Varkarakis
Recent Advances in Artificial Intelligence (AI), particularly in the field of compute vision, have been driven by the availability of large public datasets. However, as AI begins to move into embedded devices there will be a growing need for tools to acquire and re-acquire datasets from specific sensing systems to train new device models. In this paper, a roadmap in introduced for a data-acquisition framework that can build the large synthetic datasets required to train AI systems from small seed datasets. A key element to justify such a framework is the validation of the generated dataset and example results are shown from preliminary work on biometric (facial) datasets.
人工智能(AI)的最新进展,特别是在计算视觉领域,是由大型公共数据集的可用性推动的。然而,随着人工智能开始进入嵌入式设备,将越来越需要工具来获取和重新获取来自特定传感系统的数据集,以训练新的设备模型。在本文中,介绍了数据采集框架的路线图,该框架可以构建从小种子数据集训练人工智能系统所需的大型合成数据集。证明这种框架的一个关键因素是对生成的数据集进行验证,并从生物特征(面部)数据集的初步工作中显示示例结果。
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引用次数: 0
Flexible Manufacturing using Automated Material Handling and Autonomous Intelligent Vehicles 使用自动化物料搬运和自动智能车辆的柔性制造
Pub Date : 2020-06-01 DOI: 10.1109/ISSC49989.2020.9180172
Con Cronin, A. Conway, Anshul Awasthi, Joseph Walsh
This paper details a proof-of-concept material handling system integrated to a small-scale, self-navigating AIV. The prototype has the ability to autonomously navigate from one manufacturing cell to another. It loads and unloads material from one fixed conveyor to another in an environment that includes confined and populated passageways. This paper advances the concept of the material handling system to communicate directly with the production equipment. A successful development of an material handling system with an AIV in automation proposes to increase productivity in manufacturing while securing jobs in a competitive market. AIVs promote flexibility within the factory floor and increase the realisation of Industry 4.0.
本文详细介绍了一种集成到小型自导航AIV上的概念验证材料处理系统。原型机具有从一个制造单元自动导航到另一个制造单元的能力。它将物料从一个固定的传送带装载和卸载到另一个固定的传送带,在一个环境中,包括封闭和拥挤的通道。提出了与生产设备直接通信的物料搬运系统的概念。成功开发具有自动化AIV的物料搬运系统,可以提高制造业的生产率,同时在竞争激烈的市场中确保就业机会。aiv促进了工厂车间的灵活性,并增加了工业4.0的实现。
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引用次数: 0
期刊
2020 31st Irish Signals and Systems Conference (ISSC)
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