A Temperature Measuring Lidar Double Gratings Spectrometer with High Linear Dispersion

Yang, 刘洋 Liu; Tianshu, 张天舒 Zhang; Xuesong, 赵雪松 Zhao; Liujun, 钟刘军 Zhong; Yibin, 付毅宾 Fu; Zhenyi, 陈臻懿 Chen; Yunsheng, 董云升 Dong; Guangqiang, 范广强 Fan

doi:10.3788/cjl201845.0911015

Cited by 2 publications

(1 citation statement)

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“…The measurement is done on a single optical path, which is more effective as regards one-dimensional temperature measurement, but for two-dimensional (2D) temperature-field measurement, more optical paths are needed to cover the whole measurement area. Therefore, at present, how to reconstruct the temperature field is still the main problem of this kind of temperature measurement [4][5][6]. The acoustic temperature-measurement method has the advantages of fast response, a wide temperaturemeasurement range; however, this method has high requirements as regards the acoustic waveguide medium and low accuracy, when measured in the high-temperature field [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

A study on surface-temperature measurement by means of a vacuum-arc cathode under different current conditions

Yang¹,

Dai²,

Zhang³

2022

Meas. Sci. Technol.

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Accurate detection and analysis of the cathode surface temperature delivers an important reference value as regards the prediction of electrode life and corrosion degree, a thorough study of the vacuum-breakdown phenomenon, design and application of the vacuum-arc ion source and vacuum switch. In this paper, multispectral true temperature measurement T of the surface temperature field of pulsed vacuum arc cathode materials under different discharge currents is carried out. Firstly, aiming at solving the problem of synchronous imaging measurement of the temperature field across the cathode of pulsed vacuum arc, a multi-wavelength monochromatic image-acquisition optical path is designed, based upon the image acquisition module of a high-speed monochrome camera. Also, multiple monochromatic spectral radiation images of the target are synchronously acquired on the focal plane of the same monochrome camera detector. As a result, the spectral-radiation image information of multiple wavelengths can be obtained in a single exposure time, which greatly shortens the temperature-field image acquisition time. Secondly, based upon the multispectral true-temperature calculation method, high-speed multispectral imaging measurement of the target temperature field is realized. Finally, the two-dimensional true temperature distribution of the cathode temperature field under different current conditions was studied by setting up an experimental platform for measuring the cathode temperature of the vacuum arc under different current conditions.

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Section: Introductionmentioning

confidence: 99%