Design of FPGA-based TDLAS aircraft fire detection system

Kui-hong Hao; Ji-xuan Wang

doi:10.1117/12.2678929

15 May 2023 Design of FPGA-based TDLAS aircraft fire detection system

Kui-hong Hao, Ji-xuan Wang

Proceedings Volume 12699, Third International Conference on Sensors and Information Technology (ICSI 2023); 126990A (2023) https://doi.org/10.1117/12.2678929
Event: International Conference on Sensors and Information Technology (ICSI 2023), 2023, Xiamen, China

Abstract

A new file detection system based on FPGA and TDLAS technology is proposed to solves the shortcomings of traditional fire detection sensors in airplane cabins, such as poor reaction time, high false alarm rate, and limited sensitivity. First, an FPGA-centered system architecture is constructed using gas molecule spectrum absorption theory. The FPGA is used to create a laser wavelength modulation signal generating module, as well as a high-speed data transmission module, a FIR digital low-pass filter module, and a digital phase-sensitive detector module. The system was used to evaluate the strength of gas absorption peaks at different concentrations. The second harmonic was extracted from the data while measuring and removing the interference from the external environment. The relative error of the final fitting results was less than 0.04%, which proves the feasibility of the design.

Citation Download Citation

Kui-hong Hao and Ji-xuan Wang "Design of FPGA-based TDLAS aircraft fire detection system", Proc. SPIE 12699, Third International Conference on Sensors and Information Technology (ICSI 2023), 126990A (15 May 2023); https://doi.org/10.1117/12.2678929

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KEYWORDS

Field programmable gate arrays

Tunable filters

Fire

Sensors

Digital filtering

Optical filters

Absorption

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