High-temperature field measuring instrument of CCD image sensor

A measuring instrument and image technology, which is applied in the field of high-temperature temperature field measuring instruments, can solve problems such as narrow temperature measurement range and large temperature measurement error, and achieve the effects of improving product output and quality, ensuring normal and effective operation, and improving thermal efficiency

Inactive Publication Date: 2009-10-28
彭小奇 +2
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  • Abstract
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Problems solved by technology

However, due to some key problems that have not been effectively resolved, the existing high-temperature field measurement devices based on CCD image sensors have the disadvantages of large temperature measurement errors and narrow temperature measurement ranges, and have not been widely used in practice.

Method used

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  • High-temperature field measuring instrument of CCD image sensor
  • High-temperature field measuring instrument of CCD image sensor
  • High-temperature field measuring instrument of CCD image sensor

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Embodiment Construction

[0017] According to the spectral response characteristics and photoelectric conversion characteristics of CCD, the RGB channel output value of the color CCD image sensor reflects the brightness and chromaticity information of the radiated light on the surface of the measured object, and the radiated light of the object has a specific relationship with the temperature of the object. According to Thermal radiation theory, the surface temperature field of the radiator can be calculated from the thermal radiation image information output by the CCD.

[0018] figure 1 The described CCD image sensing high temperature field measuring instrument consists of a CCD camera, an image acquisition card, a computer and corresponding measurement software. The color CCD camera captures the light radiation image of the high temperature radiator, completes the photoelectric conversion process, outputs the RGB tricolor signal of the radiation image and converts it into a standard video signal. T...

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Abstract

The invention relates to a high-temperature field non-contact type measuring instrument based on a color CCD image sensor. The measuring instrument consists of the CCD image sensor, an image acquisition card, a computer system and a corresponding measuring software. A calibration experiment is implemented for correcting temperature-measuring results, and the CCD is guaranteed to work in a linear area all the time by automatically adjusting the inlet light quantity. The high-temperature radiator images acquired by the CCD are preprocessed to obtain red and green base-color values; a soft measuring model is used for calculating the surface temperature field of a radiator; and a smoke attenuation radiation energy compensator is used for compensating and correcting the temperature-measuring results. The pseudo-color display is conducted on the final calculation results of the temperature field.

Description

technical field [0001] The invention relates to a high-temperature temperature field measuring instrument. Background technique [0002] Temperature measurement methods are generally divided into two categories: contact measurement method and non-contact measurement method. Commonly used contact temperature measuring instruments mainly include thermocouple thermometers, thermal resistance thermometers and contact fiber optic pyrometers. Contact thermometers are technically mature and have played a very good role in the temperature measurement of industrial furnaces. However, these sensors usually can only measure the temperature value of one or more points in the high-temperature object at a time, and cannot obtain the temperature field distribution of the high-temperature object. Moreover, some of the sensors have a large thermal inertia, and it is difficult to establish a thermal balance. Real-time online continuous detection. In addition, the high-temperature productio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/52
Inventor 彭小奇孙元严军李阳保
Owner 彭小奇
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