Localized Fault Detection of Separation in Wireless Sensors Network: A Review
The authors propose a distributed algorithm to detect \"Cuts\" in sensor networks, i.e., the failure of a set of nodes that separates the networks into two or more components. The algorithm consists of a simple iterative scheme in which every node updates a scalar state by communicating with its nearest neighbors. In the absence of cuts, the states converge to values that are equal to potentials in a fictitious electrical network. When a set of nodes gets separated from a special node, that they call a \"Source node\", their states converge to 0 because \"Current is extracted\" from the component but none is injected. These trends are used by every node to detect if a cut has occurred that has rendered it disconnected from the source.