A high-precision sensing device and method for sapphire inoculation points based on radiation spectrum

Abstract

The invention proposes a high-precision sensing device and method for sapphire inoculation points based on radiation spectrum, which belongs to the field of safety positioning technology; the purpose is to solve the problems of high misjudgment rate and low degree of automation in the current manual inoculation technology, and it is not necessary to detect the best inoculation The single correlation image feature of the point and the complex thermal field change; the technical scheme and technical effect are that the present invention utilizes the feature that the environment inside the crucible is a vacuum, which greatly reduces the loss in the process of electromagnetic wave propagation, and combines the wavelength emitted by the surface of the high-temperature melt For the highly sensitive feature of temperature, the stability of the temperature field can be judged by analyzing the change characteristics of the spectrum in real time. When the continuous spectrum curve gradually tends to be consistent, it means that the liquid surface temperature field is in a stable state at this time, and inoculation can be considered. By comparing the spectral curves at consecutive time points, the influence of system errors is effectively eliminated, the misjudgment rate of inoculation prediction is low, and the sampling period of spectral detection is short, which meets the requirements for real-time detection and automation.

Description

technical field [0001] The invention belongs to the technical field of safety positioning, and specifically relates to a high-precision sensing device and method for sapphire inoculation points based on radiation spectrum. Background technique [0002] Sapphire is an important semiconductor material with a large band gap and low mobility, and is widely used in industrial production. The current method of producing sapphire is mainly Kyropoulos synthetic sapphire. Put the raw material in the crucible, heat it in a high vacuum environment to melt it into a melt, adjust the temperature in the crucible, and guide the lower temperature seed crystal to contact the raw material melt under suitable conditions, and the seed crystal at the inoculation point begins to grow crystals, through Control the processes of seeding (seeding), shouldering, equal diameter, finishing and annealing, and finally grow a sapphire ingot with a complete shape in the crucible. [0003] At present, the ...

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the deficiencies of the prior art, and proposes a high-precision sensing device and method for sapphire inoculation points based on radiation spectrum, aiming to solve the problems of high misjudgment rate and low degree of automation in current manual inoculation technology

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