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Differential strain type optical fiber Bragg raster-suspended belt scale

A strain type and belt scale technology, which is applied in the measurement of the changing force of the optical properties of the material when it is stressed, thermometers with physical/chemical changes, weighing, etc., to achieve the effect of strong anti-interference ability

Inactive Publication Date: 2010-07-14
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the belt scale devices actually used in the market so far, or in the patent literature, no corresponding technology that combines fiber Bragg gratings with belt scales has been found.

Method used

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  • Differential strain type optical fiber Bragg raster-suspended belt scale
  • Differential strain type optical fiber Bragg raster-suspended belt scale
  • Differential strain type optical fiber Bragg raster-suspended belt scale

Examples

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Embodiment Construction

[0033] This embodiment is based on the BEP belt scale of German Schenck Company, and adopts a cantilever beam of equal strength made of stainless steel. The dynamic beam 6 is integrated with the fixed base of the weighing idler 2, the stressed end of the equal-strength cantilever beam 5 is fixed to the dynamic beam 6 with screws 3, and the fixed end of the equal-strength cantilever beam 5 is fixed to the static beam 1 with screws 3 A fiber Bragg grating 4 is pasted along the centerline positions of the upper and lower surfaces of the equal-strength cantilever beam, and the fiber Bragg grating 4 is connected to the signal processing device 9 with a signal line.

[0034] 1. Equal-strength cantilever beam, the size parameters are: L=250mm, h=5mm, b 0 =200mm;

[0035] 2. Equal strength cantilever beam, the material parameters are: Young’s modulus of 45# steel is E=200GPa;

[0036] 3. The technical parameters of the fiber Bragg grating are: central wavelength λ B =1550.000nm, st...

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Abstract

The invention relates to a differential strain type optical fiber Bragg raster-suspended belt scale belonging to the technical field of photoelectronic measurement. A dynamic beam of the device and a fixed base of a weighing roller are connected into a whole, the stressed end of a constant-strength cantilever beam is fixedly connected with the dynamic beam, the fixed end of the constant-strength cantilever beam is fixed on a static beam, an optical fiber Bragg raster is respectively pasted along the upper and lower surfaces of the constant-strength cantilever beam, and the optical fiber Bragg raster is connected with a signal processing device by using a signal wire. The belt scale realizes real-time and precise weighing, can simultaneously measure temperature and pressure and has strong anti-electromagnetic interference capacity.

Description

technical field [0001] The invention relates to a differential strain type optical fiber Bragg grating suspension type belt scale, which belongs to the technical field of optoelectronic measurement. Background technique [0002] Belt scale is a kind of measuring equipment for continuous weighing of materials during the process of conveying solid bulk materials by belt conveyor. measure. Because most of the transducer elements of the suspension belt scale use resistance strain gauges, the measurement accuracy is affected by electromagnetic interference (Fang Yuanbai, "Electronic Belt Scale", Beijing: Metallurgical Industry Press, 2007). [0003] The information monitored by the fiber Bragg grating is transmitted through optical signals, which has anti-electromagnetic interference (EMI) and intrinsic safety in flammable and explosive occasions. Therefore, the fiber Bragg grating is used as the transducer of the load cell in the suspension belt scale Components can overcome e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G11/00G01G11/14G01K11/32G01L1/24G01K11/3206
Inventor 李川杨莉
Owner KUNMING UNIV OF SCI & TECH
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