Bridge structure safe state emergency monitoring and early warning method and system based on wireless sensor network

Abstract

The invention discloses a bridge structure safe state emergency monitoring and pre-warning method based on a wireless sensor network. The network with a sensor module which is arranged on the two sides or bottom stress point of the bridge or stress bearing parts of beams and columns is used for collecting bridge temperature and humidity, vibration amplitude, stress strain data of the beams and the columns, and data of the frequency and the amplitude of the bridge structure change. The sensor module wirelessly receives and sends with a collection node and a base station node by a wireless communication module, and sends the collected and processed data; the wireless receiving and sending collection node is connected with the base station node, and the base station node is connected with a computer by the network. The wireless sensor network realizes bridge structure safe state emergency monitoring and pre-warning, the sensor system processes, systematically decomposes and transforms the data to obtain the required parameters, and is connected to the computer by the network, and various software and hardware with realizable diagnostic function diagnose the received data.

Description

1. Technical field: [0001] The invention relates to emergency monitoring and early warning control technology of bridge structure safety state, in particular to an emergency monitoring and early warning system of bridge structure safety state of intelligent wireless sensor network. 2. Background technology: [0002] In recent years, when long-span bridges suffer from natural or man-made disasters such as earthquakes, floods, hurricanes, and explosions, as well as the safety problems caused by the degradation of material properties, people have attracted widespread attention. People realize that the bridge is not a public transportation infrastructure that can be left alone after a one-time investment. Its health is also related to the lives of the people and the security of the national economy. General bridge structural damage can be divided into two categories: damage caused by sudden events (strong earthquakes, explosions, ship collisions, etc.), and cumulative damage tha...

AI Technical Summary

Problems solved by technology

[0003]The monitoring of bridges can be carried out by using sensor technology and dynamic testing technology, and by signal processing. However, the traditional method to deal with cumulative damage is manual inspection, but manual inspection The cycle is relatively long, the efficiency is low, and it is difficult to ensure the safety of the bridge structure

Using traditional sensors and measurement and monitoring equipment to monitor bridge health requires laying signal and power cables on the entire bridge deck, which not only wastes resources but also makes the laying complex and huge, making the system installation and maintenance costs very high

At present, there is no emergency monitoring and early warning method and system for the safety status of bridge structures

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