Building structure strain wireless monitoring system based on Internet of Things

Abstract

The invention discloses a building structure strain wireless monitoring system based on the Internet of Things. The system comprises a front-end acquisition module, a wireless transmission module anda background management server; the front-end acquisition module comprises a stress sampling signal amplification circuit, a composite stabilizing circuit, a noise reduction filter circuit, an A / D converter and a microprocessor; the stress sampling signal amplification circuit adopts a measurement amplifier to amplify a detection signal of a stress sensor; zero drift interference precision is avoided; system errors are effectively reduced; the composite stabilizing circuit performs amplitude stabilization and ripple elimination on an output signal of the stress sampling signal amplification circuit, and the resolution of the system is improved; the noise reduction filter circuit can well eliminate external electromagnetic interference by utilizing the principle of a low-pass filter, so that the processing precision of a stress detection signal is improved; the system provided by the invention is high in monitoring precision and strong in anti-interference capability, achieves high-precision acquisition and wireless transmission of strain signals of a building structure, and achieves a better monitoring effect.

Description

technical field [0001] The invention relates to the technical field of building structure strain monitoring, in particular to a building structure strain wireless monitoring system based on the Internet of Things. Background technique [0002] The monitoring of building structure mainly includes the monitoring of construction process and operation phase of superstructures such as reinforced concrete structure, wood structure and steel structure. Building structure monitoring is an important means to understand the health status of structures at the current stage, and can also be used as a reference for building structure identification and safety and reliability assessment. In recent years, bridges, houses, tunnels and other large-scale building collapse accidents have occurred frequently, causing major economic losses to the country. However, the traditional strain monitoring technology for building structures has poor accuracy, large errors, and cumbersome wiring, and ther...

AI Technical Summary

Problems solved by technology

The current wireless monitoring system for building structure strain based on the Internet of Things is mainly composed of a front-end acquisition module, a wireless transmission module and a background management module. The transmission will be interfered by external factors, such as external electromagnetic interference, temperature influence, and zero drift phenomenon caused by the manufacturing process, etc., which will cause errors in the measurement data, thus affecting the monitoring accuracy of the entire wireless monitoring system

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