Sapphire Fiber High-Temperature Sensor Based on Colorimetric Method

Wang, Botao; Niu, Yanxiong; Yu, Yang; Xudong, Qin; Ding, Ming

doi:10.1109/tim.2022.3189738

Cited by 5 publications

(1 citation statement)

References 21 publications

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“…[4,10]. In all the available optical methods, colorimetric thermometry utilizes the ratio of the radiation intensity images from the target object at two wavelengths to achieve its temperature distribution [11][12][13]. However, a camera is required for the radiation images at different wavelengths and elegant optical alignment is essential.…”

Section: Introductionmentioning

confidence: 99%

An FPGA-based dual-wavelength correlated imaging system with flexible frame rates for temperature distributions

Cao

Zhang

et al. 2023

Meas. Sci. Technol.

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A correlated imaging system with flexible frame rate was proposed and fabricated on the Field Programmable Gate Array (FPGA) for acquiring temperature images. Real-time images of temperatures are reconstructed on chip at a frame rate of 10 Hz, and higher rates up to 1280 frames per second are also achieved in case of resolution sacrifice. Compressive sensing method enables the flexible frame rate for dynamic temperature images. An incandescent filament was imaged and compared by the proposed imaging system and a commercial Charge-Coupled Device (CCD) camera. Reconstructed images of temperature distributions agreed well with those from the camera in the range from 1500 K to 2500 K. Moreover, the proposed system captured the excitation frequency of an acoustically excited flame by varying the frame rate. The simple structure and flexible frame rate provide an alternative to dynamical temperature imaging, especially in case the common CCD camera fails to work for its slow response.

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