Distributed bridge real-time monitoring system based on LORA wireless communication

Abstract

The invention discloses a distributed bridge real-time monitoring device based on an LORA wireless communication. The device comprises three parts, namely a plurality of remote data acquisition nodes,a centralized monitoring terminal and an LORA wireless communication network, wherein networking is carried out through LORA wireless communication. By means of an analog switch gating, different operational amplifier gain feedback resistors are gated, different gain multiples are achieved, and different intensity signals are amplified under different working conditions; system working time synchronization and position positioning are realized through a GPS, and the synchronous work of the plurality of remote data acquisition nodes is ensured; a solar cell panel is used for generating electricity, a rechargeable battery is charged and accumulated through a battery management module, and a system power supply is provided for the remote data acquisition nodes; and an acoustic emission principle is applied to calculate and analyze acquired data in a centralized monitoring terminal, and positions and sizes of bridge cracks are determined. The device of the invention has the beneficial effects that accident potentials are found early, effective measures are taken, safe and healthy operations of bridges are ensured, and the safe service lives of the bridges are effectively prolonged.

Description

technical field [0001] The invention belongs to a bridge real-time monitoring system, in particular to a distributed bridge real-time monitoring system based on LORA wireless communication. Background technique [0002] According to statistics in my country, among the more than 700,000 road bridges, the number of various sick bridges has approached 100,000, of which nearly 20,000 are dangerous bridges. This is mainly due to construction errors, hydrogeological and natural disasters, and accidental collisions. Factors such as overloading and vehicle overloading lead to cracks in the bridge, which reduces the strength, stiffness, and stability of the bridge, and then becomes a dangerous bridge due to failure, and various vicious accidents occur frequently. However, except for some large bridges in my country, most of the bridges do not have any bridge monitoring devices. Therefore, it is of great significance to increase the real-time monitoring of the health status of bridges ...

AI Technical Summary

Problems solved by technology

However, except for some large bridges in my country, most of the bridges do not have any bridge monitoring devices. Therefore, it is of great significance to increase the real-time monitoring of the health status of bridges and carry out timely maintenance to effectively extend the safe service life of bridges.

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