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TDLAS是一种新型的气体检测技术,该技术利用气体对激光能量的选频吸收特性,实现高速率、高精度的气体浓度检测。在TDLAS检测技术应用中,使用高频调制技术与相应的频率提取技术获得被激光穿过的气体具体信息。为研究气体吸收激光能量过程中的信号变化过程,利用MATLAB软件仿真气体吸收激光能量过程,并将算法移植到ARM硬件平台上,模拟输出激光被气体吸收衰减后的波形信号,为后续系统研究与设计提供信号激励源,加速系统开发进程。
TDLAS is a new gas detection technology that utilizes the frequency-selective absorption of gas by laser energy to achieve high-speed, high-precision gas concentration detection. In the application of TDLAS detection technology, the use of high-frequency modulation technology and the corresponding frequency extraction technology to get the laser through the gas specific information. In order to study the process of signal change during the laser energy absorption, MATLAB software was used to simulate the process of gas absorption laser energy. The algorithm was transplanted to ARM hardware platform to simulate the waveform signal of the output laser attenuated by gas absorption. Designed to provide signal stimulus to accelerate system development.