Node order automatic deduction method of bridge health monitoring sensor network using signal strength

Abstract

The invention discloses a node order automatic deduction method of a bridge health monitoring sensor network using signal strength. The method comprises the steps as follows: (1) starting, an aggregation node transmitting a starting instruction to the bridge health monitoring sensor network, and the node order automatic deduction method is started; (2) data collection, the sensor node freely broadcasts a message after receiving an instruction and simultaneously monitors signals of other nodes, and records the signal strength, and returns the collected signal strength data back to the aggregation node; (3) data disposal, the aggregation node disposes the collected signal strength data according to a transmission node and the serial number of a data package to remove the incomplete data; (4) automatic sequence, the aggregation node executes the proposed sort algorithm to each group of disposed data and provides a relative node order; (5) ending, the aggregation node outputs a sorting sequence while obtaining same relative order for many times, and transmits to a terminating instruction to the network, and the sensor node stops broadcasting the message and collecting the data.

Description

1. Technical field [0001] The present invention proposes a practical node sequence derivation method for a sensor network with a linear topology arranged on a bridge, which can be used without adding additional hardware, without affecting the normal operation of the network, and only needing to add a small amount of code at the node end Next, the relative order of nodes is automatically deduced. The present invention is also applicable to sensor networks arranged on roads, straight trees and other linear topological structures. 2. Background technology [0002] The use of sensor networks for bridge health monitoring, road condition monitoring, and ecological data collection of Zhishu is a typical application of sensor networks. In these scenarios, sensor nodes present a one-dimensional layout or linear topology. We call this type of network " Linear Sensor Network". In a linear sensor network, the order of nodes refers to the ordering of nodes in physical space. For exampl...

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Problems solved by technology

[0003] At present, there is no practical way to derive the order of nodes

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