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Fiber grating sensor insert for mould pressing product detection and manufacturing method thereof

A technology of optical fiber grating and molded products, which is applied in the direction of using optical devices, instruments, and measuring heat. It can solve problems such as damage and fiber softness, and achieve the effects of reducing installation costs and improving survival rate and operability.

Active Publication Date: 2016-06-01
SHANDONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Optical fiber can be used for on-line detection of temperature and strain after engraving grating. However, the optical fiber is soft and vulnerable to damage by high temperature and high pressure environment when the product is molded.
Therefore, implanting FBG sensors in molded articles is a technical challenge

Method used

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  • Fiber grating sensor insert for mould pressing product detection and manufacturing method thereof
  • Fiber grating sensor insert for mould pressing product detection and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] An on-line detection fiber grating sensor insert for a filter plate of a filter press formed by a molding process

[0059] like figure 1 As shown in , the insert consists of a fiber grating for temperature measurement and a fiber grating for strain measurement, and six grating units are engraved on each fiber (schematic figure 1 Only three are drawn in the figure), each grating unit is an independent sensor, and the central wavelengths of the grating units are 1512nm, 1516nm, 1520nm, 1524nm, 1528nm, 1532nm. The material of the optical fiber protective layer and the grating encapsulator is the same as that of the filter plate of the filter press, all of which are polypropylene. The thickness of the grating protective layer polypropylene is 1mm. The grating unit is protected by grating wrappers. Each optical fiber has six grating wrappers. A hard and temperature-resistant fiber optic connector embedded joint is installed at one end of each optical fiber.

[0060] The sp...

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Abstract

The invention discloses a fiber grating sensor insert for mould pressing product detection and a manufacturing method thereof. The insert comprises a temperature fiber grating, a strain fiber grating, grating wrappers, protection layers and connectors, wherein the temperature fiber grating and the strain fiber grating are arranged side by side, and each of the temperature fiber grating and the strain fiber grating comprises a plurality of conducting fibers and grating cell regions arranged at intervals; the temperature fiber grating and the strain fiber grating are provided with grating wrappers for protecting the grating cell regions; the conducting fibers are coated with the protection layers; and the end parts of the temperature fiber grating and the strain fiber grating are provided with the connectors. The fiber grating sensor insert can be implanted conveniently and reliably during the product mould pressing and forming process, the temperature sensor and the strain sensor are buried in the product, the sensors can be positioned, the sensors can be ensured to survive in the high temperature and high pressure conditions of the mould pressing and forming process, the sensors are seamlessly embedded inside the product, and the measurement accuracy and the service life of the sensors can be improved significantly.

Description

technical field [0001] The invention relates to an optical fiber grating sensor insert used for detecting molded products and a manufacturing method thereof. Background technique [0002] The manufacturing industry is the main body of the national economy, the foundation of the country, the instrument of rejuvenating the country, and the foundation of a strong country. The realization of "Made in China 2025" puts forward higher requirements for the intelligence of the manufacturing industry. Therefore, the intelligent detection, intelligent control, and intelligent The demand for diagnosis, intelligent decision-making, and intelligent maintenance continues to increase. In modern industrial production, especially in the automated production process, it is necessary to use various sensors to monitor and control various parameters in the production process, to maintain the best condition of the equipment, and to strive for good product quality and low production costs. Industr...

Claims

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Application Information

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IPC IPC(8): G01K11/32G01B11/16G01K11/3206
CPCG01B11/165G01K11/32
Inventor 贾玉玺郭云力安立佳董琪高琳琳叶慧王庆林周勇
Owner SHANDONG UNIV
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