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Optimization and reconstruction device and method for temperature field on the basis of minimum norm function

A temperature field and function technology, applied in the field of temperature field optimization and reconstruction, can solve problems such as prolonged time and complex algorithm, and achieve the effect of good temperature distribution, simple principle and easy realization.

Inactive Publication Date: 2019-08-27
TIANJIN UNIV
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Problems solved by technology

However, the simulated annealing algorithm contains multiple iterations in its implementation. Although it can reduce the number of measurement light paths, it also makes the algorithm relatively complex and greatly lengthens the time required for reconstruction.

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  • Optimization and reconstruction device and method for temperature field on the basis of minimum norm function
  • Optimization and reconstruction device and method for temperature field on the basis of minimum norm function
  • Optimization and reconstruction device and method for temperature field on the basis of minimum norm function

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Embodiment Construction

[0051]Aiming at the problems of slow reconstruction speed and difficult implementation in the TDLAS reconstruction process, the invention takes the modular function as the objective function and constructs an easy-to-implement temperature field reconstruction algorithm by using the least square principle. The principle of the algorithm is relatively simple, and the operation efficiency is higher. The real-time measurement capability of the TDLAS system has been improved, the functions of optimizing fuel usage and real-time detection of abnormal temperature have been realized, and finally the goal of improving the safety factor of heat source and fuel utilization rate has been achieved. It is of great significance to reduce combustion carbon emissions and protect the environment. In addition, the invention also has reference significance for the improvement and research of the TDLAS reconstruction algorithm.

[0052] In order to make the purpose, technical solution and advanta...

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Abstract

The invention relates to the technical field of laser and temperature field measurement, and puts forward a temperature field reconstruction method which is easy in implementation. The reconstructionstep is simple, operation efficiency is higher, and temperature anomaly can be detected in real time. In addition, the invention adopts the technical scheme that the optimization and reconstruction device and method for a temperature field on the basis of a minimum norm function utilizes a computer to control a laser to alternately generate two frequency sweep laser pulse signals of different frequency bands, after the laser signal passes through a heat source to be detected, a sensor receives the signal and deduces laser absorbance, and then, temperature field reconstruction is carried out bythe obtained laser absorbance. The method is mainly applied to a temperature field measurement occasion.

Description

technical field [0001] The invention proposes a laser temperature measurement algorithm applied to temperature field detection. The technology is based on tunable laser absorption spectrum technology and is mainly used to restore the temperature distribution in the area to be measured, that is, the temperature field in the area. Specifically, it relates to the optimal reconstruction method of temperature field based on the minimum square function. Background technique [0002] Utilizing the relationship between the laser absorbance of the absorbing medium and the temperature, Tunable Diode Laser Absorption Spectroscopy (TDLAS) is often used to detect the temperature field. Compared with traditional contact measurement, TDLAS has high sensitivity, good anti-noise performance, and short measurement cycle. It is an easy-to-implement non-contact measurement method. This technology is widely used in temperature detection in high-temperature environments such as boilers, power ge...

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Application Information

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IPC IPC(8): G01K11/00G06F17/17
CPCG01K11/00G06F17/17
Inventor 张潇曾周末李健
Owner TIANJIN UNIV
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