Title:
BEAT EFFECT-BASED QUARTZ-ENHANCED PHOTOACOUSTIC SPECTROSCOPY GAS DETECTION APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO/2018/188429
Kind Code:
A1
Abstract:
A beat effect-based quartz-enhanced photoacoustic spectroscopy apparatus and method, the apparatus comprising a photoacoustic signal detection module, a gas chamber (2), a light source module and a data collection module; by means of detecting a beat signal generated by a process of mixing a piezoelectric signal output by a quartz tuning fork (1) and a demodulation signal of a lock-in amplifier (9), the present invention can accurately obtain electrical parameters of a quartz crystal oscillator and concentration of a gas to be detected on a millisecond time scale; the present invention can be used for online monitoring of gases in fields including environmental monitoring, food safety monitoring and industrial production control.
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Inventors:
DONG LEI (CN)
WU HONGPENG (CN)
TITTEL FRANK K (CN)
XIAO LIANTUAN (CN)
JIA SUOTANG (CN)
WU HONGPENG (CN)
TITTEL FRANK K (CN)
XIAO LIANTUAN (CN)
JIA SUOTANG (CN)
Application Number:
PCT/CN2018/078020
Publication Date:
October 18, 2018
Filing Date:
March 05, 2018
Export Citation:
Assignee:
UNIV SHANXI (CN)
International Classes:
G01N21/17
Domestic Patent References:
| WO2003104767A2 | 2003-12-18 |
Foreign References:
| CN107064012A | 2017-08-18 | |||
| CN106290165A | 2017-01-04 | |||
| CN104833660A | 2015-08-12 |
Other References:
WU, HONGPENG ET AL.: "Beat Frequency Quartz-enhanced Photoacoustic Spectroscopy for Fast and Calibration-free Continuous Trace-gas Monitoring", NATURE COMMUNICATIONS, vol. 8, 31 May 2017 (2017-05-31), XP055543221, ISSN: 2014-1723
Attorney, Agent or Firm:
TAIYUAN JINKE INTELLECTUAL PROPERTY ATTORNEY LAW OFFICE (SPECIAL GENERAL PARTNERSHIP) (CN)
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