Showing papers on "Sensor node published in 1990"

Local area network with star topology and ring protocol

Abstract: In a local area network all communication nodes are connected only to a centrally located star network coupler, but data is transmitted from one communication node to the next active communication node in a sequence defined by a ring protocol. The star network coupler may be implemented by switches capable of connecting a receiver for one communication node to a transmitter for the next communication node or to a bypass line for the next communication node. However, preferably the star network coupler comprises a selective multiplexer for each of the nodes. Each selective multiplexer has inputs connected to all of the communication nodes to receive therefrom transmission data and a line status signal indicating communication activity with each node so that inactive nodes can be bypassed.

A Distributed Sensor Network Structure With Fault-Tolerant Facilities

Abstract: In this paper, we discuss advanced architectures for distributed sensor networks. This includes the development of efficient algorithms for data-combination, noise removal, and information abstraction. Specifically, the we discuss the following issues in distributed signal processing: *A new signal processing architecture for networking spatially distributed sensors. *An improved method for integration of sensor information. *Fault-tolerance capabilities within the proposed signal processing architecture.