Optical fiber sensors, and system for monitoring granary temperature and stock

A fiber optic sensor and monitoring system technology, applied in the field of monitoring systems, can solve problems such as lack of grain inventory monitoring capabilities, and achieve good anti-electromagnetic interference capabilities, cost reduction, and high measurement accuracy.

Inactive Publication Date: 2011-06-15
HENAN UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a monitoring system for granary temperature and inventory, to solve the problem that the existing granary monitoring system can only complete the monitoring of temperature and does not have the ability to monitor grain inventory, and provide a monitoring system used by the monitoring system Fiber Optic Sensor

Method used

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  • Optical fiber sensors, and system for monitoring granary temperature and stock
  • Optical fiber sensors, and system for monitoring granary temperature and stock
  • Optical fiber sensors, and system for monitoring granary temperature and stock

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Embodiment Construction

[0023] The present invention will be further introduced below in combination with specific embodiments.

[0024] Such as Figure 2 ~ Figure 3 Shown is a schematic structural view of the optical fiber sensor of the present invention, as can be seen from the figure, the optical fiber sensor includes a bare optical fiber 1 and a package body 2, the bare optical fiber 1 is packaged in the package body 2 along the central axis of the package body, and the package body on both sides of the bare optical fiber There are symmetrical side holes 3 on the top, the center of the bare optical fiber and the centers of the holes on both sides are on the same line, and guide grids 4 are arranged at intervals along the axial direction and in the direction of the center line between the two symmetrical side holes.

[0025] The guide gratings in this embodiment are evenly spaced between the side holes, and the guide gratings at the corresponding positions between the holes on both sides are alter...

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PUM

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Abstract

The invention relates to optical fiber sensors, and a system for monitoring granary temperature and stock. The system for monitoring the granary temperature and stock comprises a driver, a laser, a coupler, a detection circuit, a controller, a monitoring center and distributed strain sensitization optical fiber sensors distributed at all measurement points of a granary. Compared with other temperature sensors, the system for monitoring the granary temperature and stock by a nonlinear fusion technology has the advantages that: optical fibers are used as sensing and transfer media of granary temperature and stock information and are arranged in the whole granary; temperature along the optical fibers and strain distribution conditions can be measured; and with the growth of the optical fibers, and increasing of the number of measurement points, the temperature and the stock can be monitored simultaneously, and the cost of sampling points per unit is greatly reduced.

Description

technical field [0001] The invention relates to an optical fiber sensor and a monitoring system using the sensor, in particular to an optical fiber sensor and a granary temperature and inventory monitoring system using the sensor. Background technique [0002] Optical fiber sensing system is a device that uses optical fiber to modulate the light wave parameters transmitted in the optical fiber to the value to be measured, and demodulates and detects the modulated light wave signal to obtain the value to be measured. Distributed optical fiber sensor is a new type of sensing technology developed in recent years. Utilize optical fiber working frequency bandwidth, large dynamic range, suitable for telemetry and remote control, long-distance low loss, easy to bend, small size, light weight, low cost, waterproof, fireproof, explosion-proof, corrosion-resistant, anti-electromagnetic interference, good anti-radiation performance, It has many inherent advantages such as little i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/26G01K11/32G01K11/3206
Inventor 孙崇峰李智慧焦素敏徐晓光王学梅王彩红
Owner HENAN UNIVERSITY OF TECHNOLOGY
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