Automatic calibration type distributed optical fiber temperature measurement sensing equipment and its use method

Abstract

The invention discloses a distributed optical fiber temperature measuring and sensing device with automatic calibration and a use method thereof, and is characterized in that an output end of an optical maser is connected with an input end of a branching unit, an output end of the branching unit is respectively connected with an input end of a coupler and an optical signal detector, an output end of the optical signal detector is connected with an input end of an adjustor, an output end of the adjustor is connected with an input end of a signal amplifier, an output end of an isochronous controller is connected with an input end of the optical signal detector and a data acquisition unit, an input end of the isochronous controller is connected with an output end of a data processor, and an input end of the data processor is connected with an output end of the data acquisition unit. Compared with traditional optical fiber temperature measuring and sensing devices, the distributed optical fiber temperature measuring and sensing device with automatic calibration gain has the following advantages: 1. the device is not required to be returned to factories for measuring and debugging, thus saving resources and funds; 2. the device can maintain continuously precise measurement for a long time; 3. the time and number of the project operation and cease are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of distributed optical fiber temperature sensing, in particular to an automatic calibration type distributed optical fiber temperature sensing device and its use method, in particular to its mechanical connection structure. Background technique [0002] Optical fiber temperature measurement and sensing system is mainly used in transportation, construction, electric power, coal mine, petrochemical and other industries, and its function is to monitor the real-time temperature of these important places. It plays an important role in ensuring the normal operation of industrial system equipment and ensuring the safety of life and property. [0003] The existing optical fiber temperature measurement and sensing system is composed of a laser driver, a laser, a synchronous controller, a coupler, a constant temperature bath, a reference optical fiber, an optical filter, a photoelectric probe, a signal amplifier, a da...

AI Technical Summary

Problems solved by technology

[0004] In the distributed optical fiber temperature sensing system, the light intensity of the laser is a very important parameter, but with the increase of the use time of the laser, the light intensity of the laser will gradually weaken, which will affect the accuracy of the temperature measuring device; existing methods It is to return the equipment to the manufacturer regularly for testing and calibration

This not only requires a lot of manpower and material resources, but also interrupts the temperature detection.

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