Field calibration method of engineering structure vibration acceleration monitoring equipment

Abstract

The invention relates to a field calibration method of engineering structure vibration acceleration monitoring equipment, which is used for calibrating a field sensor to be calibrated. The method comprises the following steps: determining the vertical weight m and impact angle range of a gravity pendulum based on the range and precision of the sensor to be calibrated, and planning the condition setting of a field calibration group; keeping the standard acceleration sensor and the sensor to be calibrated on site on the same high layer to realize synchronous measurement with the sensor to be calibrated; attracting the fixed support to a sensor installation plane through the magnet to be fixed, the gravity pendulum and the fixed support being connected through the movable pin shaft, combiningdifferent pin hole positions to obtain the proper swing arm length, and guaranteeing that the gravity pendulum can hammer the position of a sensor anti-base to be calibrated; acquiring a calibrationcoefficient of a to-be-calibrated sensor on site; and constructing a calibration parameter curve to complete calibration.

Description

technical field [0001] The invention relates to an on-site calibration method for real-time monitoring equipment of vibration acceleration of engineering structures. Background technique [0002] With the development of my country's ocean engineering, the digitization and intelligence of ocean platforms have gradually been valued and promoted. As an important equipment for marine structure health monitoring, the vibration acceleration sensor has the advantages of strong adaptability, convenient installation, and reliable monitoring data. It is one of the necessary equipment to realize the digitalization and intelligence of offshore platforms. However, after a long period of operation, the acceleration sensor will inevitably drift, which will lead to distortion of monitoring data, affect the data analysis of managers, and even cause false alarms in the monitoring system and interfere with the normal operation of the platform. [0003] At present, acceleration sensors are usu...

AI Technical Summary

Problems solved by technology

This calibration method, on the one hand, will terminate the continuity of monitoring data for a long time, so that the real-time performance of the monitoring system cannot be guaranteed; on the other hand, it requires an additional disassembly process on site, which interferes with the normal operation of the platform, which is time-consuming and laborious

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