System and method for measuring hearth temperature distribution by utilizing CCD camera

Abstract

The invention discloses a system and method for measuring hearth temperature distribution by utilizing CCD camera. The system comprises a boiler, the CCD camera, a signal collecting device and an operation processing system. The CCD camera comprises a CCD sensor area array consisting of a plurality of groups of sensors; the sensor comprises a micro lens, a fast moving optical filter group and a photosensitive element. An optical filter disc is arranged between the micro lens and the photosensitive element, and the fast moving optical filter group is embedded on the optical filter disc in an array mode. According to the method, the CCD camera is used for collecting signals, the signals are processed by the signal collecting device and enter the operation processing system, an image matrix is generated, a projection gray level image is formed, and an LFBP-SART algorithm is used for reconstructing a temperature field. All radiation irradiated on the sensor can be more accurately received,the measurement precision is high, the flame boundary can be accurately divided, the beneficial effects of radiation intake are obtained, and the requirements of actual production are met.

Description

technical field [0001] The invention belongs to the field of radiation temperature measurement, and in particular relates to a system and method for measuring the temperature distribution of a furnace by using a CCD camera. Background technique [0002] Temperature is one of the important parameters in the combustion process. With the increase of temperature and the development of science and technology, the importance of accurately measuring temperature distribution in national defense, military, scientific research and industrial production is becoming more and more significant. The traditional temperature measurement method, such as the thermocouple method, needs to be in contact with the target to be measured, which will interfere with the temperature field of the target to be measured. At the same time, the temperature measurement of the contact method can only obtain the temperature signal of a certain local position, and cannot obtain the entire combustion space. temp...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a system and method for measuring the temperature distribution of the furnace using a CCD camera to solve the problem of the traditional CCD camera measurement method in the prior art. When the sensor receives the radiation signal, due to the unevenness of light, the boundary flame Or the influence of pixel size and quantity, which will cause errors in the measurement results

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