Multi-degree-of-freedom micro-vibration diagnosis method and sensing terminal

Abstract

The invention relates to a multi-degree-of-freedom micro-vibration diagnosis method and a sensing terminal, which realize the calculation and observation of settlement and displacement values, and at the same time analyze the reliability of the settlement and displacement values ​​obtained by calculating the data samples collected at each collection time point, and improve the Accuracy of observations. The present invention triggers data collection through vibration detection, including acceleration data, magnetic field data, angle data, positioning data, etc. The synergy of each sensor is high, the data at the same time is highly correlated, and can reflect the dynamic changes of observation points in real time. The invention realizes non-contact sensing, edge computing, data storage, backup power supply, communication transmission, encryption chip, etc., can freely select wider acquisition frequency, freely perceive micro-vibration and magnetic force change; it can be implemented in dilapidated buildings, ancient buildings, Different application scenarios such as bridges, underground pipe galleries, dams, tunnels, and iron towers provide strong support for disaster monitoring and early warning and forecasting in my country.

Description

technical field [0001] The invention relates to the technical field of building safety observation, and more specifically, to a multi-degree-of-freedom micro-vibration diagnosis method and a sensing terminal. Background technique [0002] Traditional slope and building structure safety monitoring uses inclinometers, static levels, mechanical displacement meters or piezoelectric acceleration sensors. The functions of each instrument are single. For example, the inclinometer can only measure the inclination, and the static level can only measure the settlement. Displacement gauges can only measure displacement, and accelerations can only measure vibration. In addition, the commonly used inclinometer is single-axis measurement; the static level requires at least two terminals to work together to measure, and the sensing range is limited, not only the product cost is high, but also the installation and maintenance are high; the mechanical displacement meter can only measure Dis...

AI Technical Summary

Problems solved by technology

[0002] Traditional slope and building structure safety monitoring uses inclinometers, static levels, mechanical displacement meters or piezoelectric acceleration sensors. The functions of each instrument are single. For example, the inclinometer can only measure the inclination, and the static level can only measure the settlement. Displacement gauges can only measure displacement, acceleration can only measure vibration

In addition, the commonly used inclinometer is single-axis measurement; the static level requires at least two terminals to work together to measure, and the sensing range is limited, not only the product cost is high, but also the installation and maintenance are high; the mechanical displacement meter can only measure Displacement within the measurement range of the body and in the installation direction; when the piezoelectric acceleration sensor is stationary, it cannot measure the zero point, and the frequency range is small, which leads to insufficient freedom of product use and certain limitations

[0003] In addition, regarding the summary of data, the monitoring data collected by multiple sensors with a single function are exchanged in a variety of different ways and sent to the local or remote software platform. Different programs have different data transmission delays, resulting in time reference points This kind of asynchronous data cannot be truly synchronized to the 3D simulation platform (digital twin) to reflect the dynamic changes of the real physical structure in real time

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