Embedded Device

This paper describes a new approach to implement Web Services in embedded devices connected to Wireless Sensor Networks. The sensor/actuator node is able to process standard requests (XML-RPC and SOAP), perform an action and generate a valid response. These stand-alone nodes show good interoperability with standard Web Services using just a transport protocol gateway.

Abstract: Modeling systems with Statecharts has become,standard practice in the de- sign of reactive embedded devices. However, the modeling of realistic applications with the paradigms,established so far often results in models that are difficult to comprehend and maintain, which severely compromises their practical use. The Kiel Integrated Envi- ronment for Layout (KIEL) is a modeling,environment,for the exploration of alternative editing and representation paradigms. We here report on an adaptation of KIEL to MAT- LAB Simulink/Stateflow, and on an automotive case study.

We now see an increasing need and opportunity to create interfaces between the physical world of sensors and actuators and the software world of enterprise systems. To eliminate much of the complexity and cost associated with integrating devices into highly distributed enterprise systems, we propose leveraging existing and emerging standards from both the embedded-device and IT domains within a service-oriented device architecture (SODA)

Near Field Communication (NFC)-based mobile phone services offer a lifeline to the under-appreciated multiapplication smart card initiative. The initiative could effectively replace heavy wallets full of smart cards for mundane tasks. However, the issue of the deployment model still lingers on. Possible approaches include, but are not restricted to, the User Centric Smart card Ownership Model (UCOM), GlobalPlatform Consumer Centric Model, and Trusted Service Manager (TSM). In addition, multiapplication smart card architecture can be a GlobalPlatform Trusted Execution Environment (TEE) and/or User Centric Tamper-Resistant Device (UCTD), which provide cross-device security and privacy preservation platforms to their users. In the multiapplication smart card environment, there might not be a prior off-card trusted relationship between a smart card and an application provider. Therefore, as a possible solution to overcome the absence of prior trusted relationships, this paper proposes the Trusted Platform Manager (TPM) concept for smart cards (embedded devices) that can act as a point of reference for establishing the necessary trust between the device and an application provider, and among applications.

Increasing hardware capabilities and application requirements in embedded systems demand additional software initialization and configuration during startup, which adversely affects system boot time. Fast boot is essential for consumer devices in ...

Wireless sensor and actuator networks (WS&ANs) are a new technology based on networks of small radio-enabled embedded devices that are being deployed in areas such as environmental monitoring, vehicle tracking, building management, body monitoring and other applications. Power sources for network nodes are often limited, which imposes restrictions on hardware resources and their use by the underlying embedded software. We propose a new wireless sensor network architecture that is especially designed for the task of home automation. Our system relies on a low power WS&AN that employs energy harvesting techniques to maximize node lifetime and an embedded residential gateway that offers user interaction and secure connectivity to the outside world. The advantages of our system are its scalability, low power, self sufficiency and versatility.

Structure pathology detection is an important security task in building construction, which is performed by an operator by looking manually for damages on the materials. This activity could be dangerous if the structure is hidden or difficult to reach. On the other hand, embedded devices and wireless sensor networks (WSN) are becoming popular and cheap, enabling the design of an alternative pathology detection system to monitor structures based on these technologies. This article introduces a ZigBee WSN system, intending to be autonomous, easy to use and with low power consumption. Its functional parts are fully discussed with diagrams, as well as the protocol used to collect samples from sensor nodes. Finally, several tests focused on range and power consumption of our prototype are shown, analysing whether the results obtained were as expected or not.

Dynamic Power Management or DPM refers to the problem ofjudicious application of various low power techniques based onruntime conditions in an embedded system to minimize the totalenergy consumption. To be effective, often such decisions takeinto account the operating conditions and the system-level designgoals. DPM has been a subject of intense research in thepast decade driven by the need for low power in modern embeddeddevices. We present an overview of the formal methods thathave been ...

Portable and embedded devices form an increasingly large group of computers, often referred to as Ambient Intelligence (AmI). This new variety in computing platforms will cause a corresponding diversity in software/hardware platforms and other context factors. Component-based middleware platforms offer a uniform environment for software, but they do not take away specific context differences, such as hardware resources, user identity/role and logical/physical location. Specialised component versions and/or configurations have to be made for each computing context if that computing context is to be used to its full extent. This is because the fine differences between component versions cannot be separated into finer components with the current component models. Aspect-oriented programming and generative programming technologies can be used to provide the fine-grained modularity that is necessary. In addition, the diversity of component-based platforms themselves form an extra reason ...