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Emissivity coefficient self-calibration device and method for multi-spectral radiation temperature measurement system

A technology of emissivity coefficient and radiation temperature measurement, which is applied in the field of optical measurement and sensing, can solve problems such as complex data processing, achieve simple and reliable principles, overcome model errors, and improve measurement uncertainty

Active Publication Date: 2016-08-17
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

However, this method is based on the ε empirical model, which is easily limited by different flame parameters and has a large uncertainty. In addition, the data processing process is relatively complicated.

Method used

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  • Emissivity coefficient self-calibration device and method for multi-spectral radiation temperature measurement system
  • Emissivity coefficient self-calibration device and method for multi-spectral radiation temperature measurement system
  • Emissivity coefficient self-calibration device and method for multi-spectral radiation temperature measurement system

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Embodiment Construction

[0040] like figure 1 As shown, the emissivity coefficient self-calibration device of the present invention includes a wide-spectrum light source 1 and an incident collimating lens group 3 and an outgoing collimating lens group 5 on the outgoing light path of the wide-spectrum light source, and the flame 4 to be measured is arranged on the incident collimating lens Between the group 3 and the outgoing collimating lens group 5, the outgoing light of the wide-spectrum light source 1 is collimated by the incident collimating lens group 3, then passes through the area to be measured of the flame 4, and passes through the outgoing collimating lens group 5 to be coupled into the Spectrometer 6 for multispectral radiation temperature measurement.

[0041] The spectrometer 6 can be a spatial optical interface, and can also adopt such as figure 2 In the shown fiber optic spectrometer, one end of the fiber is connected to the exit of the outgoing collimating lens group 5, and the other...

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Abstract

The invention discloses an emissivity coefficient self-calibration device and method for a multi-spectral radiation temperature measurement system, comprising a wide-spectrum light source and an incident collimating lens group and an outgoing collimating lens group sequentially arranged on the outgoing light path of the wide-spectrum light source. The measuring flame is arranged between the incident collimating lens group and the outgoing collimating lens group. The present invention sets an emissivity coefficient self-calibration system on the same path that the multi-spectral radiation temperature measurement system passes through to measure the flame. By recording the spectral parameters of the wide-spectrum light source, the flame, and the combined flame of the wide-spectrum light source, the parameters obtained at different wavelengths are obtained. The flame emissivity coefficient is used in the parameter correction of the multi-spectral radiation temperature measurement system, which overcomes the model error in the correction of traditional theoretical calculations and improves the measurement uncertainty.

Description

technical field [0001] The invention relates to the field of optical measurement and sensing, and in particular provides an emissivity coefficient calibration device and method for a spectral radiation temperature measurement system. Background technique [0002] Flame temperature is an important state parameter in the combustion reaction. Using this parameter can better understand the heat energy change in the combustion process, as well as the heat transfer process in the form of radiation, convection and heat conduction in the combustion process. Flame temperature distribution measurement usually has contact method and non-contact method, and the non-contact method is widely used because it introduces less interference to the flame field. [0003] In the non-contact method of temperature parameter measurement, the temperature measurement method based on the principle of spectral radiation is a commonly used method. The temperature value is calculated by measuring the rela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/60G01N21/27
Inventor 陈绍武张磊陶蒙蒙刘福华吴勇冯刚赵海川
Owner NORTHWEST INST OF NUCLEAR TECH
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