2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing最新文献_第2页

Automatic Design of Low-Power VLSI Circuits: Accurate and Approximate Multipliers 低功耗VLSI电路的自动设计:精确和近似乘法器

2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing Pub Date : 2015-10-21 DOI: 10.1109/EUC.2015.20

Vojtěch Mrázek, Z. Vašíček

{"title":"Automatic Design of Low-Power VLSI Circuits: Accurate and Approximate Multipliers","authors":"Vojtěch Mrázek, Z. Vašíček","doi":"10.1109/EUC.2015.20","DOIUrl":"https://doi.org/10.1109/EUC.2015.20","url":null,"abstract":"In order to satisfy a constant need of reducing energy consumption of electronic devices, the approximate computing paradigm has been introduced in recent years. This paradigm is based on the fact that there are applications that are inherently capable of absorbing some errors in computation. Multimedia signal processing represents a typical example that allows for quality to be traded off for power. Typicaly, the approximate circuits are designed at gate level. This paper introduces an automatic design method that is able to operate directly at transistor level which offers a great potential for discovering novel implementations of approximate circuits. The method combines a stochastic search algorithm with transistor-level circuit simulator and is able to handle the circuits consisting of hundreds of transistors. The goal of the search strategy is to improve the power consumption. To estimate power consumption, an algorithm based on transistor switching activity is proposed. A design of 4-bit multiplier was chosen as a case study. Two scenarios were considered. Firstly, the proposed method is applied to improve the power consumption of a common 4-bit multiplier and a 4-bit multiplier consisting of manually designed 2-bit multipliers. In both cases, approx. 3% power reduction was achieved. Then, it is demonstrated that a noticeable improvement can be obtained when the multipliers are designed using a hybrid approach operating at transistor as well as gate level. We discovered a novel implementation of an approximate 4-bit multiplier which has approximately by 40% better power-delay product and exhibits 14% lower worst-case error compared to the best known 4-bit multiplier consisting of 2-bit manually optimized approximate multipliers.","PeriodicalId":299207,"journal":{"name":"2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116726884","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: 5

Evaluation of a Systematic Approach in Variant Management for Safety-Critical Systems Development 安全关键系统开发中变体管理系统方法的评估

2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing Pub Date : 2015-10-21 DOI: 10.1109/EUC.2015.12

Michael Käßmeyer, David Santiago Velasco Moncada, Markus Schurius

{"title":"Evaluation of a Systematic Approach in Variant Management for Safety-Critical Systems Development","authors":"Michael Käßmeyer, David Santiago Velasco Moncada, Markus Schurius","doi":"10.1109/EUC.2015.12","DOIUrl":"https://doi.org/10.1109/EUC.2015.12","url":null,"abstract":"The development of highly integrated, safety-relevant automotive functions is faced with the challenge of increasing complexity resulting from product customization and variants in implementation through software-hardware solutions. In order to reduce time to market in this scenario, systematic reuse of engineering artifacts is important. This paper introduces a systematic model-based engineering approach that combines architecture design, requirements engineering, and safety analyses with variant management and provides evaluation results to address these challenges. In detail, this tool-supported approach achieves a new level of seamless safety engineering across variants by enabling typical safety lifecycle artifacts to be represented in a homogeneous, UML-compliant model notation. Safety-related information is no longer scattered in various isolated tools and formats but instead consolidated and integrated. A further and decisive benefit of this notation is that variability can now be expressed and managed easily by regular variant management tools with UML adapters. Together with changeimpact analysis which is facilitated equally by this model-based foundation, the ultimate goal of developing and maintaining modular safety cases can be achieved. Examples on how to use this model-based safety engineering method for variant-rich automotive functions are presented for a hazard analysis, a fault tree analysis and for a safety concept specification.","PeriodicalId":299207,"journal":{"name":"2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133722582","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: 11

A Holistic Approach for Advancing Robots in Ambient Assisted Living Environments 在环境辅助生活环境中推进机器人的整体方法

2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing Pub Date : 2015-10-21 DOI: 10.1109/EUC.2015.37

Fynn Schwiegelshohn, P. Wehner, J. Rettkowski, D. Göhringer, M. Hübner, G. Keramidas, Christos P. Antonopoulos, N. Voros

引用次数: 12

Exploring Embedded Symmetric Multiprocessing with Various On-Chip Architectures 探索嵌入式对称多处理与各种片上架构

2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing Pub Date : 2015-10-21 DOI: 10.1109/EUC.2015.19

Gorker Alp Malazgirt, Bora Kiyan, Deniz Candas, K. Erdayandi, A. Yurdakul

{"title":"Exploring Embedded Symmetric Multiprocessing with Various On-Chip Architectures","authors":"Gorker Alp Malazgirt, Bora Kiyan, Deniz Candas, K. Erdayandi, A. Yurdakul","doi":"10.1109/EUC.2015.19","DOIUrl":"https://doi.org/10.1109/EUC.2015.19","url":null,"abstract":"Multicore embedded systems have evolved to appear in different domains. In this paper, we explore and compare various on-chip architectures with respect to a number design metrics. Unlike earlier published works that majorly concern with optimizations in processor, memory and cache hierarchies, in this paper, we aim to ascertain the best on-chip architectures for given processor cores, Level 1-2-3 caches modeled from Intel Atom embedded processor family. We investigate topologies that haven't been considered before for symmetric multiprocessing in embedded systems domain. These architectures consist of shared instruction caches between cores and heterogenous cache topologies that feature bypassing a level in the cache hierarchy. Through our experiments with multithreaded workloads, we elicit the unconventional topologies that could provide more performance and energy efficiency than regular topologies. In addition, using our experimental data, we conclude that certain design metrics could depend on given workload, however there also exists some metrics that are more dependent on the the underlying topologies. Thus, we urge the need for future exploration tools to gather the necessary metrics while choosing the appropriate SMP architectures.","PeriodicalId":299207,"journal":{"name":"2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133493294","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: 3

A Positioning Technology Switch Algorithm for Ubiquitous Pedestrian Navigation Systems 无所不在行人导航系统的定位技术切换算法

2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing Pub Date : 2015-10-21 DOI: 10.1109/EUC.2015.26

Wiem Fekih Hassen, F. Najjar

{"title":"A Positioning Technology Switch Algorithm for Ubiquitous Pedestrian Navigation Systems","authors":"Wiem Fekih Hassen, F. Najjar","doi":"10.1109/EUC.2015.26","DOIUrl":"https://doi.org/10.1109/EUC.2015.26","url":null,"abstract":"Nowadays, with the development of ubiquitous and pervasive computing, pedestrian navigation systems are gaining significant momentum for location based services. To perform a seamless navigation service, a mobile unit MU is capable of capturing several positioning technologies, running simultaneously or independently according to user's needs. This paper proposes a dynamic selection algorithm to evaluate and determine the best positioning technology from available candidates, in the process of switching between technologies during an indoor outdoor pedestrian navigation procedure. This choice depends on many factors related to user preferences and service parameters such as power consumption, positioning accuracy and the number of visible GPS satellites. The proposed algorithm is based on a fuzzy analytic hierarchy process -- AHP as the most wellknown multiple criteria decision making -- MCDM approach that provides a description and a manipulation of several criteria information to infer the need for initializing the switch process. The introduced algorithm employs the AHP method to calculate criteria weight and define a selection function that ensures the determination of the convenient positioning technology.","PeriodicalId":299207,"journal":{"name":"2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134152261","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: 5

Architecture-Driven Development Approach for WSAN Applications WSAN应用的架构驱动开发方法

2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing Pub Date : 2015-10-21 DOI: 10.1109/EUC.2015.15

Taniro Rodrigues, T. Batista, Flávia Coimbra Delicato, Paulo F. Pires

{"title":"Architecture-Driven Development Approach for WSAN Applications","authors":"Taniro Rodrigues, T. Batista, Flávia Coimbra Delicato, Paulo F. Pires","doi":"10.1109/EUC.2015.15","DOIUrl":"https://doi.org/10.1109/EUC.2015.15","url":null,"abstract":"Wireless Sensor and Actuator Networks (WSANs) are highly heterogeneous regarding hardware, software, and application requirements. Developing WSAN applications is a hard task, as it requires domain and network knowledge and there is a lack of methodologies, architectures, and patterns to help software developers with such task. Moreover, non-functional requirements play an essential role to ensure the application and network performance, and must be taken into account from the early stages of application development. We propose a ModelDriven Architecture framework to develop WSAN applications that enables developers to express functional and non-functional requirements. The framework encompasses a generic middleware meta-model including: (i) features shared among different WSAN middleware, (ii) meta-model of a target middleware including features of a specific WSAN middleware, and (iii) model transformations. We evaluate our approach by verifying the support to specify non-functional requirements and the automatic code generation of a middleware tailored to the requirements ofa target application.","PeriodicalId":299207,"journal":{"name":"2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing","volume":"277 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121296160","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: 5

A Framework to the Design and Programming of Many-Core Focal-Plane Vision Processors 一种多核焦平面视觉处理器的设计与编程框架

2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing Pub Date : 2015-10-21 DOI: 10.1109/EUC.2015.24

J. Y. Mori, C. Llanos, M. Hübner

{"title":"A Framework to the Design and Programming of Many-Core Focal-Plane Vision Processors","authors":"J. Y. Mori, C. Llanos, M. Hübner","doi":"10.1109/EUC.2015.24","DOIUrl":"https://doi.org/10.1109/EUC.2015.24","url":null,"abstract":"The Focal-Plane Image Processing area aims to bring processing elements as near as possible to the pixels and to the camera's focal-plane. Most of the works reported in the literature uses only simple processing elements, in general analog ones, with few flexibility. With the technology advances, a new generation of Vision Processors is emerging. It is expected that multi/many-core systems will be integrated to the pixel sensors, offering several opportunities for parallelism exploration, resulting in high performance and flexible processing systems. The programmability is one of the main problems in this area, since most programmers are not able to create parallel algorithms and applications. In this work, we propose a methodology to the design and programming of many-core focal-plane vision processors. The application is described using a Domain Specific Language, from which the parallelism characteristics are extracted. Afterwards, a new abstract model is derived using techniques such as Program Slicing (PS) and Task-Graph Clustering (TGC). The abstract model is then transformed in a SystemC/TLM2.0 description, in order to allow for different timing accuracy simulations. The results of the simulations are used together with an ASIP design tool in order to determine both the microarchitecture of processing elements and the communication structure of the new system. Finally, from the model derived before, a new source code is generated and programmed into the new platform. In this context, the main concepts and ideas are described in this work, as well as some partial results.","PeriodicalId":299207,"journal":{"name":"2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124752733","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: 5

Efficient Algorithms for Accelerometer-Based Wearable Hand Gesture Recognition Systems 基于加速度计的可穿戴手势识别系统的高效算法

2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing Pub Date : 2015-10-21 DOI: 10.1109/EUC.2015.25

Gorka Marques, Koldo Basterretxea

引用次数: 18

Advancing Integrated and Personalized Healthcare Services, the AEGLE Approach 推进综合和个性化医疗保健服务，即AEGLE方法

2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing Pub Date : 2015-10-21 DOI: 10.1109/EUC.2015.35

Andreas Raptopoulos, Vasileios Tsoutsouras, D. Soudris

引用次数: 2

Methods and Algorithms for the Interaction of Residential Smart Buildings with Smart Grids 住宅智能建筑与智能电网交互的方法与算法

2015 IEEE 13th International Conference on Embedded and Ubiquitous Computing Pub Date : 2015-10-21 DOI: 10.1109/EUC.2015.17

Giovanni Bettinazzi, A. A. Nacci, D. Sciuto

引用次数: 9