Field calibration method of engineering structure vibration acceleration monitoring equipment

A vibration acceleration and on-site calibration technology, which is applied in the testing/calibration of speed/acceleration/shock measurement equipment, speed/acceleration/shock measurement, and measurement devices, etc., which can solve the problem that the real-time performance of the monitoring system cannot be guaranteed and the monitoring is terminated for a long time Problems such as data and interference with the normal operation of the platform, achieve the effect of fast speed, easy operation, and strong adaptability on site

Inactive Publication Date: 2020-05-15
TIANJIN UNIV
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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

Method used

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  • Field calibration method of engineering structure vibration acceleration monitoring equipment
  • Field calibration method of engineering structure vibration acceleration monitoring equipment
  • Field calibration method of engineering structure vibration acceleration monitoring equipment

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Embodiment Construction

[0021] The present invention will be described below in conjunction with the accompanying drawings and embodiments. Figure 1-3 The example of the gravity pendulum device provided for the inventive method is to meet the basic requirement that the measurement value of the reference system sensor has the same acceleration input as the sensor to be calibrated when the acceleration sensor is calibrated on site, that is, the gravity pendulum device has a stable support base And real-time adjustment of the angle limit mechanism.

[0022] Below in conjunction with this example, the specific implementation is described: the gravity pendulum device of the on-site calibration of the acceleration sensor is composed of a gravity pendulum 1, a fixed bracket 2, a standard acceleration sensor 3, a sensor calibration calibration system 4, a movable pin shaft 5, and an angular positioning The pin shaft 6 is composed of the weight pendulum 1 connected with the weight hammer 7; the end of the fi...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P21/00G01H17/00
CPCG01H17/00G01P21/00
Inventor 黄焱朱本瑞田育丰
Owner TIANJIN UNIV
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