A system and method for measuring furnace temperature distribution by using ccd camera

Abstract

The invention discloses a system and method for measuring the temperature distribution of a furnace by using a CCD camera. The system includes a boiler, a CCD camera, a signal acquisition device and an operation processing system; the CCD camera includes a CCD sensor area array composed of several groups of sensors; the sensor Comprising a micro lens, a fast-moving filter group and a photosensitive element; a filter disc is arranged between the micro-lens and the photosensitive element, and the fast-moving filter group is embedded on the filter disc in a matrix form, and the method of the present invention utilizes a CCD The camera collects the signal, and the signal is processed by the signal acquisition device and enters the computing processing system to generate an image matrix, form a projected grayscale image, and use the LFBP-SART algorithm to reconstruct the temperature field. The invention can more accurately receive all the radiation irradiated on the sensor, has high measurement accuracy, can accurately divide the flame boundary, obtains the beneficial effect of absorbed radiation, and meets the requirements of actual production.

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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