Automatic temperature 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 temperature calibration and a use method thereof, and is characterized in that a beam output end of a coupler is connected with a beam input end of a thermotank, and a temperature controlling module is arranged inside the thermotank, which is doubly connected with a data acquisition unit, and compared with traditional optical fiber temperature measuring and sensing devices, the distributed optical fiber temperature measuring and sensing device 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 realizes self calibration, thus maintaining continuously precise measurement for a long time; 3. the accuracy and precision of temperature calibration is greatly improved; 4. 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 equipment, in particular to an automatic temperature calibration type distributed optical fiber temperature sensing device and its use method, and in particular to its internal mechanical 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, ...

AI Technical Summary

Problems solved by technology

[0006] 1. Because it is the average value of the temperature measured many times by the thermocouple sensor, the accuracy and precision are very small;

[0007] 2. Due to the need for technicians to measure and calibrate the temperature of the system, a lot of manpower and material resources are required, and the accuracy will also be affected;

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