无线传感器-角色系统的容错模型

Keiji Ozaki, Kenichi Watanabe, Satoshi Itaya, Naohiro Hayashibara, T. Enokido, M. Takizawa
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引用次数: 30

摘要

在无线传感器和参与者网络(WSAN)中,一组传感器和参与者在地理上分布并通过无线网络连接。传感器收集感知到的物理世界事件的信息,并将其发送给参与者。行动者通过对传感器接收到的感测信息作出决定,在致动装置上执行适当的动作。传感器是低成本、低功率的设备,具有有限的能量、计算和无线通信能力。传感器不仅可能因故障而停止,而且可能遭受任意故障。此外,由于传感器的噪声和功率不足,无线通信的可靠性较低。在WSAN应用中,传感器、参与者和驱动设备之间需要可靠的实时通信。我们提出了一个多参与者/多传感器(MAMS)模型。此外,多个参与者可以在接收到感测信息后执行操作。必须防止在每个设备上执行多个冗余操作,并且必须序列化来自多个参与者的每个设备上的冲突操作。在本文中,我们讨论了如何使WSAN可靠和可用,以及如何在实时约束下可靠和非冗余地执行操作。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A fault-tolerant model for wireless sensor-actor system
In a wireless sensor and actor network (WSAN), a group of sensors and actors are geographically distributed and linked by wireless networks. Sensors gather information sensed for an event in the physical world and send them to actors. Actors perform appropriate actions on actuation devices by making a decision on receipt of sensed information from sensors. Sensors are low cost, low powered devices with limited energy, computation, and wireless communication capabilities. Sensors may not only stop by fault but also suffer from arbitrary faults. Furthermore, wireless communication is less reliable due to noise and shortage of power of sensors. Reliable real time communication among sensors, actors, and actuation devices, is required in WSAN applications. We newly propose a multi-actor/multi-sensor (MAMS) model. In addition, multiple actors may perform actions on receipt of sensed information. Multiple redundant execution of an action on each device has to be prevented and conflicting actions on each device from multiple actors have to be serialized. In this paper, we discuss how to make WSAN reliable and available and how to reliably and non-redundantly perform actions with realtime constraints.
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