A stress state monitoring system and method for a large amusement facility

A technology of amusement facilities and stress state, which is applied in the transmission system, the measurement of the change force of the optical properties of the material when it is stressed, and the measurement of the force. Problems such as metal structure monitoring of large amusement facilities, to achieve the effect of improving accuracy, long service life and high precision

Active Publication Date: 2022-01-04
CHINA SPECIAL EQUIP INSPECTION & RES INST
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  • Abstract
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  • Application Information

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Problems solved by technology

The safety monitoring of large amusement facilities by arranging resistance strain gauges on metal structures mainly has the following defects: (1) The arrangement of resistance strain gauges on metal structures belongs to single-point measurement, and there are few measuring points, so it is difficult to realize the safety of large amusement facilities. Distributed measurement of metal structures; (2) only short-term strain measurement can be realized, and long-term monitoring of metal structure strain of large amusement facilities cannot be carried out; (3) technical requirements for high-precision and long-distance monitoring cannot be met

Method used

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  • A stress state monitoring system and method for a large amusement facility
  • A stress state monitoring system and method for a large amusement facility
  • A stress state monitoring system and method for a large amusement facility

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Embodiment 1

[0036] Such as figure 1As shown, it is a schematic topology diagram of a stress state monitoring system for a large-scale amusement facility provided by an embodiment of the present invention. The system specifically includes: a fiber grating sensor, a fiber grating demodulator, a workstation, a system platform, and a remote data center The fiber grating sensor is arranged on the structural surface of the key part of the large-scale amusement facility and is connected with the fiber grating demodulator through a distributed optical fiber strain cable for sensing the strain on the structural surface, and the sensed The strain is converted into an optical signal, and the optical signal is sent to the fiber grating demodulator; the fiber grating demodulator is used for mediating the optical signal into an electrical signal, and passing the electrical signal through an optical fiber The transmission network is transmitted to the workstation; the workstation is used to transmit the...

Embodiment 2

[0051] Embodiments of the present invention also provide a stress state monitoring method for large amusement facilities, such as Figure 4 As shown, the method includes:

[0052] S1, setting the installation fulcrum of the optical fiber grating sensor on the large amusement facility according to the spatial resolution, and installing the optical fiber grating sensor according to the set installation fulcrum;

[0053] S2. The optical fiber grating demodulator receives the optical strain signal of the structural surface of the large-scale amusement facility collected by the optical fiber grating sensor, and adjusts the received optical strain signal into an electrical strain signal;

[0054] S3, the system platform receives the strain electrical signal sent by the fiber grating demodulator, and calculates the fatigue cumulative damage of the large amusement facility based on the strain electrical signal and the stress spectrum, and based on the four-peak-valley rainflow countin...

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Abstract

The present invention mainly relates to the technical field of stress monitoring, and provides a stress state monitoring method for large-scale amusement facilities, including: setting the installation fulcrum of the fiber grating sensor on the large-scale amusement facility according to the spatial resolution and installing the optical fiber according to the set installation fulcrum The grating sensor collects the strain optical signal on the structural surface of large amusement facilities and sends it to the fiber grating demodulator. The fiber grating demodulator adjusts the strain optical signal into a strain electrical signal and sends it to the system platform. The stress spectrum is based on the four-peak valley rainflow counting method to calculate the fatigue cumulative damage of large amusement facilities, and the service life of large amusement facilities is calculated according to the fatigue cumulative damage and fatigue load spectrum. Improve the efficiency of stress monitoring with high reliability, and at the same time monitor the safety status of large amusement facilities in real time and for a long time.

Description

technical field [0001] The invention relates to the technical field of stress monitoring, in particular to a stress state monitoring system and method for large amusement facilities. Background technique [0002] At present, large-scale amusement facilities have penetrated into the foundation of economic and social development, involving many fields and aspects of the national economy and people's lives, and playing a pivotal role in the development of the national economy and society. At the same time, the movement forms of large-scale amusement facilities are complex and diverse, resulting in diversified failure modes, variable loads and fast speeds on the large shaft and transmission system. Once an accident occurs, the economic loss will be heavy and the social impact will be bad. Therefore, the safety of large-scale amusement facilities is related to the protection of people's lives, as well as the safety of national economic operation and social stability. It is an imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/16G01L1/24
CPCG01L1/242G01B11/18H04L67/12
Inventor 丁克勤刘关四
Owner CHINA SPECIAL EQUIP INSPECTION & RES INST
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