Tunable Diode Laser Absorption Spectroscopy- Based Detection of Propane for Explosion Early Warning by Using a Vertical Cavity Surface Enhanced Laser Source and Principle Component Analysis Approach

Abstract

(2017). Tunable diode laser absorption spectroscopy based detection of propane for explosion early warning by using a vertical cavity surface enhanced laser source and principle component analysis approach. IEEE Sensors Journal, 17(15), pp. 4975-4982. doi: 10.1109/JSEN.2017 This is the accepted version of the paper.This version of the publication may differ from the final published version. Abstract-It is important in the petrochemical industry that there are high sensitivity, high accuracy, low-power consumption, and intrinsically safe methods for the detection of propane gas, to provide early warning of potential explosion hazards in oil-gas storage and transportation. Tunable diode laser absorption spectroscopy (TDLAS) technology has the potential to provide an excellent basis both for early warning of explosion hazards and additionally to achieve precise, quantitative detection. In this paper, an approach to TDLAS detection of propane by using vertical cavity surface enhanced laser (VCSEL) technology, coupled with principle component analysis (PCA) is reported. In the evaluation carried out, the minimum detectable concentration could reach as low as 300 ppm and relative errors of the gas concentrations measured in this way were all below 5%. The experimental results obtained demonstrate that the use of VCSEL sources and PCA together solves difficulties often seen in the quantitative detection of propane by TDLAS at wavelengths close to 1684 nm. The approach also provides a strong experimental basis for the development of sensor systems based on TDLAS for propane and other combustible gas early warning of explosions, which makes it have real applicability in the petrochemical industry and oil-gas storage and transportation. Permanent

Self-Calibrated Multiharmonic CO2 Sensor Using VCSEL for Urban In Situ Measurement

“…TDLAS is more suited for trace gas monitoring because of the tunable diode laser scans across the absorption line at an extremely small bandwidth, in an order of 1 × 10 −3 cm −1 or smaller, which is about one-tenth of the absorption linewidth [15]. Vertical-cavity surface-emitting laser (VCSEL) is a laser with low power consumption, wide tuning range, and fast frequency modulation responses than that of the traditional DFB laser [16], [17]. It scans across several absorption lines whose wavelength is more than 10 nm; thus, it can simultaneously measure 0018-9456 © 2018 IEEE.…”

Improvement of the Detection Sensitivity for Tunable Diode Laser Absorption Spectroscopy: A Review

“…Chen J et al employed VCSEL to achieve simultaneous detection of CO and CH 4 at 2.3 μm at an effective absorption path length of 20 cm, with detection accuracy reaching the ppm-level [38]. Wang Y et al used a VCSEL with output wavelengths over the range from 1,682.7 nm to 1,685.7 nm achieving a detectable concentration of 300 ppm with relative errors below 5% is sufficient for successful early warning of propane leaks in the petrochemical and oil-gas storage and transportation industries [39]. At the same time, VCSELs have well-developed uses in the near-infrared region for detecting the concentrations of CO, CO 2 , CH 4 , and other typical gas.…”

VCSEL-Based Atmospheric Trace Gas Sensor Using First Harmonic Detection

“…with the conventional distributedfeedback (DFB) laser, the vertical-cavity surface-emitting laser (VCSEL) has many unique features, such as low power consumption, fast and wide wavelength tuning range to cover several absorption lines. Thus, the wide tuning VCSEL can be used to simultaneously measure different gases [24]- [27].…”