Ceramic kiln temperature checking method based on optical fibre grating sensing

Abstract

The invention discloses a temperature detection method of ceramic kiln. The method adopts the fiber grating sensing technology to detect the temperature of the ceramic kiln. In the specific technical proposal, optical fibers are arranged on two outer sides and the outer top the ceramic kiln; each optical fiber is connected with a plurality of gratings in series to form a fiber grating sensing network to conduct the distributing measurement of the temperature of the ceramic kiln. The method changes the traditional detection mode of temperature of the ceramic kiln does not cause damage to the ceramic kiln; and the method belongs to a non-contact temperature detection method and can be applied in the temperature detection of the ceramic kiln. Moreover, the method has the advantages of real-time temperature measurement, high anti-interference performance, excellent stability, excellent dynamic characteristics, and so on.

Description

technical field [0001] The invention relates to sensing and detection technology, in particular to a ceramic kiln temperature detection method based on optical fiber grating sensing. Background technique [0002] At present, the temperature detection methods of ceramic kilns are as follows: temperature measuring cone, temperature measuring ring, temperature measuring brick, optical pyrometer, thermocouple. Among them, the temperature measuring cone (ring) is to determine the measured temperature according to the cone (ring) number of the temperature measuring cone (ring); the temperature measuring brick is to measure the temperature by using the principle that the object is heated and contracted; The filament brightness in the standard light bulb with known brightness and temperature relationship and the radiant brightness of the measured object can be used to obtain the temperature of the measured object; the thermocouple is made of two different heat-resistant and conducti...

AI Technical Summary

Problems solved by technology

The temperature measurement of the temperature measuring cone (ring) and the temperature measuring brick can only measure the temperature point, and the continuous temperature measurement cannot be realized, and the accuracy is not high enough (the temperature difference between two adjacent cone numbers is generally about 20 degrees); the optical pyrometer It is only used to measure the temperature above 800°C, and like the temperature measuring cone, it can only measure certain temperature points, and cannot realize the conversion of temperature signal and electrical signal; thermocouple can be matched with electronic equipment to realize ceramic The automatic control of the kiln, but because the thermocouple is directly inserted into the measured medium when measuring the temperature, it is destructive to the kiln body and has poor dynamic characteristics. Temperature distribution is affected and cannot be used for very high temperature measurements

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