Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems最新文献

A Battery-Free Long-Range Wireless Smart Camera for Face Detection 一种无电池远程无线智能人脸检测相机

Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems Pub Date : 2020-11-16 DOI: 10.1145/3417308.3430273

Marco Giordano, Philipp Mayer, M. Magno

引用次数: 18

Analysing and Improving Robustness of Predictive Energy Harvesting Systems 预测能量收集系统鲁棒性分析与改进

Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems Pub Date : 2020-11-16 DOI: 10.1145/3417308.3430264

Naomi Stricker, L. Thiele

{"title":"Analysing and Improving Robustness of Predictive Energy Harvesting Systems","authors":"Naomi Stricker, L. Thiele","doi":"10.1145/3417308.3430264","DOIUrl":"https://doi.org/10.1145/3417308.3430264","url":null,"abstract":"Internet of Things (IoT) systems can rely on energy harvesting to extend battery lifetimes or even to render batteries obsolete. Such systems employ an energy scheduler to optimize their behavior and thus performance by adapting the node operation. Predictive models of harvesting sources, which are inherently non-deterministic and consequently challenging to predict, are often necessary for the scheduler to optimize performance. Therefore the accuracy of the predictive model inevitably impacts the scheduler and system performance. This fact has been largely overlooked in the vast amount of available results on energy management systems. We define a novel robustness metric for energy-harvesting systems that describes the effect prediction errors have on the system performance. Furthermore, we show that if a scheduler is optimal when predictions are accurate, it is not very robust. Thus there is a tradeoff between robustness and performance. We propose a prediction scaling method to improve a system's robustness and demonstrate the results using energy harvesting data sets from both outdoor and indoor scenarios. The method improves a non-robust system's performance by up to 75 times in a real-world setting.","PeriodicalId":386523,"journal":{"name":"Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124059872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Energy-aware HW/SW Co-modeling of Batteryless Wireless Sensor Nodes 无电池无线传感器节点的能量感知软硬件协同建模

Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems Pub Date : 2020-11-16 DOI: 10.1145/3417308.3430272

S. C. B. Wong, Sivert T. Sliper, William Wang, A. Weddell, S. Gauthier, G. Merrett

{"title":"Energy-aware HW/SW Co-modeling of Batteryless Wireless Sensor Nodes","authors":"S. C. B. Wong, Sivert T. Sliper, William Wang, A. Weddell, S. Gauthier, G. Merrett","doi":"10.1145/3417308.3430272","DOIUrl":"https://doi.org/10.1145/3417308.3430272","url":null,"abstract":"Energy harvesting wireless sensor nodes are sensitive to spatial and temporal fluctuations in energy availability. This issue is especially prevalent in batteryless systems, where devices are directly connected to power sources with little or no buffering. The strong coupling of energy supply and demand introduces a new dimension to the problem of designing robust networked sensing systems. We propose a modeling framework for this class of batteryless systems with an emphasis on the interactions between energy and function. The tool models energy harvesters, power management circuitry, energy storage, microcontrollers, sensors, radio modules, environmental models, and is fully extensible. The microcontroller model is based on cycle-accurate instruction set simulators from Fused, with various peripheral extensions to enable board-level functionality, such as SPI, DMA, hardware multiplier etc. The tool enables virtual prototyping of self-powered wireless sensor nodes, but is especially useful for studying intermittent operation and developing application specific software, hardware, or combined solutions. The simulator is capable of executing real workloads under realistic conditions and this is demonstrated through a case study where the same compiled binary is executed on a virtual prototype and its corresponding physical wireless sensor system to yield matching digital traces and current profiles","PeriodicalId":386523,"journal":{"name":"Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124812211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Zero Power Energy-Aware Communication for Transiently-Powered Sensing Systems 瞬态供电传感系统的零功耗能量感知通信

Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems Pub Date : 2020-11-16 DOI: 10.1145/3417308.3430269

A. Torrisi, D. Brunelli, K. Yıldırım

引用次数: 9

Adaptive Energy Budgeting for Atomic Operations in Intermittently-Powered Systems 间歇供电系统原子运行的自适应能量预算

Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems Pub Date : 2020-11-16 DOI: 10.1145/3417308.3430277

J. Zhan, A. Weddell, G. Merrett

引用次数: 1

Energy Harvesting Systems Need an Operating System Too 能量收集系统也需要一个操作系统

Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems Pub Date : 2020-11-16 DOI: 10.1145/3417308.3430274

S. Venkat, Marshall Clyburn, Bradford Campbell

引用次数: 1

On Securing Persistent State in Intermittent Computing 间歇计算中持久状态的保护

Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems Pub Date : 2020-11-16 DOI: 10.1145/3417308.3430267

H. Asad, E. Wouters, Naveed Anwar Bhatti, L. Mottola, T. Voigt

{"title":"On Securing Persistent State in Intermittent Computing","authors":"H. Asad, E. Wouters, Naveed Anwar Bhatti, L. Mottola, T. Voigt","doi":"10.1145/3417308.3430267","DOIUrl":"https://doi.org/10.1145/3417308.3430267","url":null,"abstract":"We present the experimental evaluation of different security mechanisms applied to persistent state in intermittent computing. Whenever executions become intermittent because of energy scarcity, systems employ persistent state on non-volatile memories (NVMs) to ensure forward progress of applications. Persistent state spans operating system and network stack, as well as applications. While a device is off recharging energy buffers, persistent state on NVMs may be subject to security threats such as stealing sensitive information or tampering with configuration data, which may ultimately corrupt the device state and render the system unusable. Based on modern platforms of the Cortex M* series, we experimentally investigate the impact on typical intermittent computing workloads of different means to protect persistent state, including software and hardware implementations of staple encryption algorithms and the use of ARM TrustZone protection mechanisms. Our results indicate that i) software implementations bear a significant overhead in energy and time, sometimes harming forward progress, but also retaining the advantage of modularity and easier updates; ii) hardware implementations offer much lower overhead compared to their software counterparts, but require a deeper understanding of their internals to gauge their applicability in given application scenarios; and iii) TrustZone shows almost negligible overhead, yet it requires a different memory management and is only effective as long as attackers cannot directly access the NVMs.","PeriodicalId":386523,"journal":{"name":"Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems","volume":"54 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123342382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Can Crystal Oscillators Keep Time Without Power? 晶体振荡器不通电也能计时吗?

Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems Pub Date : 2020-11-16 DOI: 10.1145/3417308.3430278

Arwa Alsubhi, Nicole Tobias, Simeon Babatunde, Jacob M. Sorber

引用次数: 3

Estimating Harvestable Energy in Time-Varying Indoor Light Conditions 时变室内光照条件下可收获能量的估算

Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems Pub Date : 2020-11-16 DOI: 10.1145/3417308.3430270

Xinyv Ma, S. Bader, B. Oelmann

引用次数: 5

Intermittence Anomalies not Considered Harmful 间歇性异常不认为是有害的

Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems Pub Date : 2020-11-16 DOI: 10.1145/3417308.3430266

A. Maioli, L. Mottola

引用次数: 3