Sensor and method for measuring billet surface temperature field

A technology for measuring sensors and surface temperature, applied in the field of sensors, can solve the problems of narrow measurement range, difficult to measure stably, and difficult to measure the real temperature of the slab surface accurately and stably, and achieve the effect of suppressing random noise and reducing additional errors
CN106644089BInactive Publication Date: 2019-04-19LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
Publication Date
2019-04-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a casting blank surface temperature field measurement sensor and a casting blank surface temperature field measurement method, wherein the casting blank surface temperature field measurement sensor and the casting blank surface temperature field measurement method relate to the technical field of sensors. The sensor and the method mainly aim to overcome a defect of temperature field measurement inaccuracy caused by casting blank surface emissivity uncertainty, smoke, steam and oxidation scale interference, thereby realizing accurate, stable and continuous measurement for the casting blank surface temperature field. The casting blank surface temperature field measurement sensor comprises the components of an optical lens, a stepping motor, an optical modulation turntable on which a light blocking plate and an attenuation plate are embedded, a three-spectrum thermal imaging unit, and a signal acquisition processor. The three-spectrum thermal imaging unit comprises the components of two spectroscopes, two narrowband optical plates with light transmittances which are different from wavelength, and three monochromatic surface arrays CCD.
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Description

technical field

[0001] The invention relates to the technical field of sensors, in particular to a sensor and method for measuring the surface temperature field of a slab. Background technique

[0002] In the continuous casting process, the surface temperature of the slab is of great significance to optimize the secondary cooling system and improve the quality of the slab, and its accurate online measurement is a technical problem that has not yet been solved in the metallurgical industry. The key issues are: the uncertainty of the surface emissivity of the slab and the interference factors such as smoke and water mist are difficult to achieve true temperature measurement; the influence of randomly distributed oxide scales on the surface is difficult to achieve stable measurement; the temperature gradient up to 400 °C is difficult to achieve for different species The steel billets are measured with equal precision at each temperature range.

[0003] At present, a number of ...

Claims

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