mote-cloud:大规模环境传感

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关于 MoteCloud WSN 与后端监控和管理系统的集成为企业提供了它们的全部价值,并使物理世界与互联网的连接成为现实,使下一代环境科学成为可能。 云计算概念用于定义基于 Internet 的计算范式,其中共享资源、软件和信息按需提供给计算机和其他设备。 这可以应用于使用无线传感器网络的环境监测。 但是,如果我们想提供有效且具有竞争力的解决方案,异构性和可扩展性的程度,以及这些场景中典型的服务质量和基于事件的交互方式,需要特定的支持技术。 MoteCloud 是一个基于 DDS 的系统,用于无线传感器网络的云监控。 DDS 提供高性能和支持质量的数据和事件分发基础架构。 通过基于 XMPP 的协议进行扩展,它支持一种架构,该架构允许创建全局数据空间,以 P2P 风格动态集成位于不同 Internet 点的 WSN。 此外,MoteCloud 提供了一组用户应用程序来执行环境监控所
mote-cloud-master.zip
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# About to MoteCloud The integration of WSNs with back-end monitoring and management systems delivers the full value of them to enterprises and makes the connection of the physical world with the internet a reality, enabling the next-generation environmental science. The cloud computing concept is being used to define an Internet-based computing paradigm where shared resources, software, and information are provided to computers and other devices on demand. This can be applied to ambient monitoring with wireless sensor networks. ![](https://github.com/jadianes/mote-cloud/blob/master/resources/body_pic.png?raw=true) However, the degree of heterogeneity and scalability, together with the quality of service and event-based style of interaction typical of these scenarios, requires of specific supporting technologies if we want to provide an effective and competitive solution. MoteCloud is a DDS-based system for cloud monitoring of wireless sensor networks. DDS provides the high-performance and quality-enabled data and event distribution infrastructure. Extended with an XMPP-based protocol, it supports an architecture that allows creating a global data space for dynamically integrate WSNs located at different Internet points, in a P2P style. Moreover, MoteCloud provides a set of user applications to perform the most usual and useful tasks required in ambient monitoring and that can be deployed in any location with Internet access. ## Architecture drivers Several quality attributes have shaped the MoteCloud architecture: - Heterogeneity: MC have to deal with different WSN platforms. This is achieved by the Sink API that translates WSN data to the DDS global data space. New modules can be developed using this API. - Performance: data must be delivered when generated, from WSN to applications. The applications do not need to check for new data all the time. Moreover, data quality of service (e.g. lost samples) have to be monitored. We achieve that using DDS quality of service parameters, its publish/subscribe model, and a "push" Web protocol (XMPP). Moreover, we avoid using centralized servers that can be overloaded, compromising performance. Our clouds have a P2P architecture. - Reliability: avoid single points of failure that could prevent applications to receive data. Our clouds have a P2P architecture. When a WSN fails, others keep serving its data to applications. There are not centralized servers that could stop the whole system from working. - Scalability: the architecture must be able to support locations with lots of data an requests. We achieve this using a DDS-distributed kernel in each location, that allows load-balancing thanks to its publish/susbcribe model and distributed global data space concept. - Dynamicity: the system must be able to change on run time either incorporating new WSN or new applications. This is achieved thanks to its microkernel architecture, where new modules can be plugged into the DDS backbone. Moreover, applications can appear at any moment since they use either the same DDS backbone or the XMPP Web protocol. - Complex event processing: an important part of monitoring applications is being able to define and detect complex events. This is achieved by introducing the concept of Complex Event Processor. A CEP is built on top of the DDS publish-subscribe model and incorporates user-defined routines. - Extensibility: MoteCloud must evolve, incorporating new WSN and new applications. It must promote a community based development. This is done by using standards. New WSNs are incorporated developing simple Java modules that use the Sink API (it has three operations) to put data in the DDS global data space. Web applications only have to deal with the XMPP standard protocol. Therefore, extensibility points are well defined, and are mostly based on standard technologies. ## IMPORTANT This is a research project. It is not intended for production. Moreover, some of its parts are not functional yet. However, there are some components and ideas here that worth to be shared among the DDS and RTSJ community. ## Publications MoteCloud is based on the [ServiceDDS research project](http://jadianes.me/service-dds/). - Dianes, J.A.; Díaz, M.; Rubio, B, ."*Using standards to integrate soft real-time components into dynamic distributed architectures"* Computer Standards and Interfaces. Elsevier. [Available online 15 October 2011](http://www.sciencedirect.com/science/article/pii/S0920548911000894) - Dianes, J.A.; Díaz, M.; Rubio, B.,*"ServiceDDS: A Framework for Real-Time P2P Systems Integration,*" Object/Component/Service-Oriented Real-Time Distributed Computing (ISORC), 2010 13th IEEE International Symposium on , vol., no., pp.233,237, 5-6 May 2010. [Available onlie](http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5479549)
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