Five-channel adaptive two-dimensional temperature field measurer and measurement method thereof

Abstract

The invention relates to the combustion field and the optical measurement technology and particularly relates to a five-channel adaptive two-dimensional temperature field measurer and a measurement method thereof. A flat light splitter is at the back of a combined lens comprising an industrial endoscope and a collimation objective, a light splitter set is mounted in a light splitting direction of the flat light splitter, a color CCD camera is mounted in another light splitting direction of the flat light splitter, black and white near-infrared CCD cameras are respectively mounted in two light splitting directions of the light splitter set, a light filter is arranged between the light splitter set and the black and white near-infrared CCD cameras, each camera is connected with a synchronization data image acquisition card, and the synchronization data image acquisition card is connected with an image processing system. According to the measurer, a before-the-lens light splitting and black and white CCD imaging measurement mode is employed, a four-channel light splitting and two-CCD-camera measurement mode is employed, an image processing method of image segmentation and partitioned area combination is employed, and measurement precision is improved.

Description

technical field [0001] The invention relates to the field of combustion and optical measurement technology, in particular to a five-channel self-adaptive two-dimensional temperature field measurement device and a measurement method thereof. Background technique [0002] Due to the complexity and importance of combustion, the measurement and monitoring of combustion has always been a very important issue in the field of combustion. The temperature range of the combustion field is often relatively large. Taking the combustion of pulverized coal boilers in power stations as an example, the lowest temperature in the combustion area is only 600-700°C, while the highest temperature in the combustion center can even reach more than 1500°C. The temperature difference between different areas at the same time values ​​up to several hundred degrees. [0003] At present, the general practice of visual measurement systems that use flame images for measurement is to directly obtain flame...

AI Technical Summary

Problems solved by technology

This method requires synchronous acquisition of thermal radiation images with different central wavelengths, and requires the same optical path and clear imaging. For two beam splits, imaging on the same CCD, the above conditions can be met, but for three beam splits, imaging on the same CCD, The hardware implementation of the above conditions is difficult, and it is not easy to meet the optical path and definition at the same time. It puts forward high requirements for the spectroscopic device itself and the connection of the entire system, and is not suitable for industrial applications.

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