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Visual safety monitoring system and method for ice layer of natural ice rink

A technology for safety monitoring and ice layer, applied in measurement devices, instruments, optical devices, etc., can solve the problems of ice layer damage, inability to realize multi-point, real-time observation, etc., and achieve the effect of saving labor costs

Pending Publication Date: 2022-07-29
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is relatively reliable, but the measurement process itself needs to destroy the ice layer, and it cannot achieve multi-point, real-time observation

Method used

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  • Visual safety monitoring system and method for ice layer of natural ice rink
  • Visual safety monitoring system and method for ice layer of natural ice rink
  • Visual safety monitoring system and method for ice layer of natural ice rink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] like Image 6 As shown, it is a schematic structural diagram of a natural ice rink ice layer visual safety monitoring system of the present invention. The system includes a natural ice rink 3 , an original ice layer 2 , an optical fiber 27 , a distributed optical fiber sensing demodulator 30 , a monitoring host 31 and a handheld mobile terminal 32 . The optical fiber 27 is laid on the original ice layer 2 in close contact with the ice surface, and extends to the outside of the natural ice rink 3 at the end point 25 of the optical fiber laying, and is connected to the distributed optical fiber sensing solution set outside the natural ice rink 3 . The distributed optical fiber sensing demodulator 30 monitors the frequency shift and power of the scattered signal in the optical fiber 27 to obtain the strain distribution along the optical fiber 27 in the natural ice rink 3. The monitoring host 31 and the The distributed optical fiber sensing demodulator 30 is connected, and...

Embodiment 2

[0058] A method for installing an ice layer visualization safety monitoring system in a natural ice rink of the present invention includes the following steps:

[0059] Step 1. Determine the optical fiber laying path 11 according to the monitoring area;

[0060] Step 2, the optical fiber laying path 11 is provided with a starting point 12, first to twelfth inflection points 13-24, and an end point 25;

[0061] Step 3. Start laying the optical fiber 27 on the original ice layer 2 along the direction of the starting point 12 of the optical fiber laying path 11. First, fix the optical fiber 27 at the starting point 12. The rounded cube ice cube 26 at the starting point 12 and the original ice layer 2 There is a gap at the edge of the contact surface between the two, and the optical fiber 27 is placed in the gap; after that, the optical fiber 27 is wound around the ice cube 26 for 10 turns along the gap, and water is dripped onto the optical fiber 27 wound around the ice cube 26 u...

Embodiment 3

[0068] The visual safety monitoring method of ice layer in natural ice rink based on distributed optical fiber sensing includes the following steps:

[0069] Step 1. The distributed optical fiber sensing demodulator 30 demodulates the strain signal measured by the optical fiber 27 and sends it to the monitoring host 31;

[0070] Step 2. The monitoring host 31 extracts the strain signal measured by the optical fiber 27 in the monitoring area 4-10, such as Figure 9 shown;

[0071] Step 3: The monitoring host 31 further converts the strain signal of the optical fiber 27 in the monitoring area 4-10 into a two-dimensional strain distribution map of the monitoring area 4-10, such as Figure 10 shown, where different color depths correspond to different strain values ​​in the region. The larger the strain value, the higher the risk of ice damage and fracture safety hazards;

[0072] Step 4. When there is an area with a strain value greater than 100με, further safety inspection of...

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Abstract

The invention discloses a visual safety monitoring system and method for an ice layer of a natural ice rink. The system comprises the natural ice rink, an original ice layer, an optical fiber, a distributed optical fiber sensing demodulator, a monitoring host and a handheld mobile terminal, the distributed optical fiber sensing demodulator demodulates to obtain a strain signal measured by the optical fiber and sends the strain signal to the monitoring host; the monitoring host extracts a strain signal measured by the optical fiber in the monitoring area; the monitoring host further converts the strain signals of the optical fibers in the monitoring area into a two-dimensional strain distribution diagram of the monitoring area; and the monitoring host sends the two-dimensional strain distribution diagram to the handheld mobile terminal, and the two-dimensional strain distribution diagram is checked in real time through a mobile phone APP, so that visual safety monitoring of the ice layer of the natural ice rink is realized. Compared with the prior art, labor cost is saved, large-range and real-time monitoring is achieved, and potential safety hazards can be found timely and efficiently; and the ice layer safety can be monitored conveniently in real time.

Description

technical field [0001] The invention belongs to the technical field of distributed optical fiber sensing, and the monitoring system and method can be applied to the visual safety monitoring of the ice layers in various natural ice rinks, so as to grasp the safety status of the ice layers in time. Background technique [0002] A natural ice rink is a natural ice rink, which is made of dry ice or naturally frozen. It forms a flat ice surface on flat ground or water, and uses blade-shaped skates to play and skate. For natural ice rinks, since the ice layer is above lakes and rivers, the safety and reliability of the ice layer is very important. Once the ice surface is damaged or broken, the consequences will be disastrous. In addition, due to the lack of an effective early warning mechanism, the natural ice rink needs to invest a lot of manpower and material resources for maintenance and inspection every day. Taking Yingze Park in Shanxi as an example, the staff of the natural...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16
CPCG01B11/165
Inventor 刘铁根武瑞杰刘琨江俊峰王双丁振扬
Owner TIANJIN UNIV
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