Dr. Peng Zhang Profile

Dr. Peng Zhang

at Qilu Univ of Technology (Shandong Academy of Sciences)

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 5 November 2020 Paper

Performance improvement of multi-point photoacoustic spectroscopy gas detection system by power compensation technique and fixed wavelength technique

Haifeng Qi, Peng Zhang, Xiangzhi Liu, Jun Chang

Proceedings Volume 11567, 115670H (2020) https://doi.org/10.1117/12.2574812

KEYWORDS: Photoacoustic spectroscopy, Absorption, Sensors, Optical fibers, Laser applications

Read Abstract +

Previous studies on the use of photoacoustic spectroscopy (PAS) techniques in the measurement of CH₄ concentrations have been mainly limited to a single point measurement using only one PAS cell. A single point measurement will not satisfy the detection need, for instance in a natural gas transmission pipeline or an underground coal mine, gas explosion may occur at any point of the pipe or tunnel. Therefore, simultaneous multi-point measurements are required to obtain the gas distribution profile along the tunnel. Here we proposed and demonstrated a multi-point photoacoustic spectroscopy gas detection system based on the power compensation technique and fixed wavelength technique for CH4 detection. In the multi-point photoacoustic spectroscopy gas detection system, the gas absorption of the first PAS cell would make the measurement of the second PAS cell inaccurate. Therefore, we proposed a power compensation technique to compensate the absorbed laser power. In addition, a simple fixed wavelength technique was used in multi-point photoacoustic spectroscopy gas detection system to improve the signal to noise ratio (SNR). Finally, the experiment results showed that the two PAS cells achieved the minimum detection limit of 7.72 ppmv and 5.14 ppmv, respectively.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years