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An intelligent modeling device and method for an SLD light source optical power temperature compensation model

A technology of optical power and model, applied in measurement devices, instruments, surveying and navigation, etc., can solve complex modeling and other problems, achieve high modeling efficiency, high tolerance, and solve complex modeling problems.

Active Publication Date: 2020-10-23
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above deficiencies, the present invention provides an intelligent modeling device and method for an SLD light source optical power temperature compensation model, which realizes high-efficiency and autonomous modeling under the collaborative work of multiple devices, and solves the complex problem in the average wavelength temperature control scheme of the SLD light source. modeling problem

Method used

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  • An intelligent modeling device and method for an SLD light source optical power temperature compensation model
  • An intelligent modeling device and method for an SLD light source optical power temperature compensation model
  • An intelligent modeling device and method for an SLD light source optical power temperature compensation model

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Embodiment

[0048] Embodiments are proposed for specific system parameters. In this system, the thermistor resistance value γ corresponding to the unit digital quantity RT is 0.18Ω; the rate of change of the core temperature corresponding to the average wavelength 1.65°C / nm; R-T coefficient κ of thermistor R-T It is 440Ω / ℃. SLD light source tube core temperature working set value T 0 is 25°C, the ambient temperature range of the model [T 1 , T 2 ] is [-40°C,60°C], the ambient temperature adjustment step size ΔT e is 1°C, the rough adjustment accuracy of the model in the system ε 1 Set to 3ppm, fine-tuning precision ε 2 Set to 0.5ppm. The example is as follows:

[0049] (1) According to figure 2 Connect each device and the SLD light source to be tested in the manner shown. Start SLD light source 5, computer 1 sends temperature control digital quantity D 0 , control the working point at 25°C. Thermostat 2 controls the ambient temperature to drop to -40°C, and spectrometer 3 ca...

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Abstract

The invention discloses an intelligent modeling device and method of an SLD (super luminescent diode) light source luminous power temperature compensation model. The device comprises a computer, a temperature box, a spectrograph, a light intensity feedback temperature compensation circuit and a tested SLD light source; the computer is connected with the temperature box; the computer is connected with the spectrograph and used for controlling the spectrograph to test SLD light source to output a spectrum and read out a mean wavelength; the computer is connected with the light intensity feedbacktemperature compensation circuit and used for sending a control command of the SLD light source to the light intensity feedback temperature compensation circuit and receiving light intensity and environmental temperature information collected by the light intensity feedback temperature compensation circuit; the SLD light source and the light intensity feedback temperature compensation circuit areplaced in the temperature box, the light intensity feedback temperature compensation circuit is used for controlling the temperature of an SLD light source tube core through electrical connection; the SLD light source outputs light and is connected with a coupler through optical fiber and respectively connected with an optical power meter and the spectrograph in the light intensity feedback temperature compensation circuit after divided into two parts by the coupler, light intensity is tested by the light intensity feedback temperature compensation circuit and sent to the computer, and the spectrograph is used for testing the mean wavelength.

Description

technical field [0001] The invention relates to the technical field of fiber optic gyroscopes, in particular to an intelligent modeling device and method for an SLD light source optical power temperature compensation model. Background technique [0002] As the key angular velocity sensitive unit in the modern inertial navigation system, the fiber optic gyroscope has the advantages of small size, light weight, all solid state, and strong adaptability, and has played an important role in the fields of aviation, aerospace, and navigation. [0003] The SLD (Super Luminescent Diode) light source is the core optoelectronic device of the fiber optic gyroscope, and the stability of the broadband light source directly affects the performance of the fiber optic gyroscope. The average wavelength stability of the light source is directly proportional to the scale factor stability of the fiber optic gyroscope. In order to achieve the scale factor stability index of the high-precision fib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C19/72G05B13/04
CPCG01C19/721G05B13/042
Inventor 张登伟邹康王磊杨建华舒晓武
Owner ZHEJIANG UNIV
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