Portable optical fiber radiation thermodetector and measuring method thereof

Abstract

The invention discloses a portable optical fiber radiation thermodetector and a measuring method of the portable optical fiber radiation thermodetector, and belongs to the field of pyrometry. The thermodetector comprises a high-power optical fiber coupler, an energy transmitting optical fiber, a photoelectric detector, a pre-amplification module, an AD sampling module, a signal processing module, a display module, a keyboard input module, a digital-to-analog conversion module and a 4-20mA current loop. Thermal radiation energy at a broadband spectrum is coupled by the high-power optical fiber coupler and transmitted to the photoelectric detector by the energy transmitting optical fiber to convert optical signals into electrical signals, the electrical signals are sampled by the AD sampling module, obtained sampled signals are analyzed by the signal processing module through the curve-fitting algorithm, and a corresponding temperature value can be worked out finally through calibration. The portable optical fiber radiation thermodetector is very suitable for measuring crystal oven thermal fields due to the structure, easy and convenient to use and very practical.

Description

technical field [0001] The invention relates to a measuring instrument for the thermal field of a crystal furnace, in particular to a portable optical fiber type radiation thermometer for measuring the thermal field of a crystal furnace and a measuring method thereof. Background technique [0002] Radiation thermometers are often used in high temperature measurement in the fields of chemical industry, energy, metallurgy and scientific research. For the measurement range above 1800°C, the radiation thermometer calculates the corresponding temperature by means of non-contact measurement of the energy of infrared thermal radiation. The upper limit of measurement is not limited by the temperature resistance of the temperature sensing element, so there is no limit to the maximum measurable temperature in principle. Therefore, it has been widely used in the industrial field. Due to the advantages of high resolution, high temperature measurement accuracy and good repeatability, ra...

AI Technical Summary

Problems solved by technology

However, these instruments require sophisticated optical lenses and complex optical signal processing devices, so it is difficult to make compact and inexpensive measuring instruments

[0003] Traditional radiation thermometers generally have large structures, complex optical paths, are sensitive to environmental influences, and are expensive. Therefore, there is an urgent need for a simpler, more compact and more stable temperature measurement system.

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