Development of Digital Signal Processor Controlled Quantum Cascade Laser Based Trace Gas Sensor Technology
Development of Digital Signal Processor Controlled Quantum Cascade Laser Based Trace Gas Sensor Technology
复制标题
数字信号处理器控制的基于量子级联激光的痕量气体传感器技术的开发
DOI：
10.1109/jsen.2006.881350
复制
发表时间：
2006
影响因子：
4.3
通讯作者：
F. Tittel
中科院分区：
文献类型：
--
作者：
S. So;G. Wysocki;J. P. Frantz;F. Tittel
本文报道了一个定制的数字信号处理器（DSP）系统的设计和集成到脉冲量子级联激光（QCL）为基础的微量气体传感器，以提高其便携性，鲁棒性和操作性能。具体来说，本文介绍了一个定制的原型DSP数据采集和系统控制器的德州仪器公司的TMS320F2812嵌入式控制和处理的基础上实现。此外，该传感器通过利用嵌入在DSP中的模数转换器的高速转换能力来实现过采样。一氧化碳传感器，采用热电冷却，脉冲4.6 μ m分布反馈QCL作为中红外辐射源，用于评估这种DSP控制的光谱气体传感器的性能特性
This paper reports the design and integration of a custom digital-signal-processor (DSP) system into a pulsed quantum-cascade-laser (QCL)-based trace gas sensor to improve its portability, robustness, and operating performance. Specifically, this paper describes the implementation of a custom prototype DSP data acquisition and system controller based on the Texas Instruments TMS320F2812 for embedded control and processing. In addition, the sensor incorporates oversampling by taking advantage of the high-speed conversion capabilities of an analog-to-digital converter, which is embedded within the DSP. A carbon monoxide sensor, employing a thermoelectrically cooled, pulsed 4.6-mum distributed feedback QCL as a mid-infrared radiation source, is used to evaluate the performance characteristics of such a DSP controlled spectroscopic gas sensor