公开(公告)号：US11662301B1

公开(公告)日：2023-05-30

申请号：US17984859

申请日：2022-11-10

Applicant: Anhui University of Science and Technology

Inventor： Huawei Jin ,  Lei Fang ,  Haowei Wang

IPC: G01N21/17 ,  G01N1/24 ,  E21F17/18

CPC classification number: G01N21/1702 ,  E21F17/18 ,  G01N1/24 ,  G01N2021/1704 ,  G01N2201/06113

Abstract: Disclosed are a mine dust real-time detection system based on double-photoacoustic spectrometry and a detection method. The mine dust real-time detection system based on double-photoacoustic spectrometry includes a first sampling unit, a first photoacoustic detection cavity, a second sampling unit, a second photoacoustic detection cavity, a signal unit and a processing unit; the first sampling unit is used for sampling in respective, the first photoacoustic detection cavity provides a photoacoustic effect field to substances sampled by the first sampling unit, the second sampling unit is used for sampling in respective, the second photoacoustic detection cavity provides the photoacoustic effect field to substances sampled by the second sampling unit, the signal unit is used for providing a laser signal, and the processing unit is used for collecting and processing a photoacoustic signal.

公开(公告)号：US12123825B2

公开(公告)日：2024-10-22

申请号：US18432313

申请日：2024-02-05

Applicant: Anhui University of Science and Technology

Inventor： Huawei Jin ,  Xu Wang ,  Haowei Wang

IPC: G01N21/17 ,  G01N1/14 ,  G01N33/00

CPC classification number: G01N21/1702 ,  G01N1/14 ,  G01N33/0027 ,  G01N2021/1704 ,  G01N2201/06113 ,  G01N2201/0636

Abstract: Disclosed is a synchronous detection system for a trace nitrogen-oxygen compound based on photoacoustic spectrometry, including a NOx (Nitrogen Oxide) detection air channel, a dust detection air channel and a double-photoacoustic spectrometry detection mechanism which are mutually connected in parallel; the NOx detection air channel includes a background interference detection air pipe, a NO2 detection air pipe and a NO detection air pipe that are mutually connected in parallel, and a NOx photoacoustic detection cavity; and the dust detection air channel includes a dust detection air pipe and a dust photoacoustic detection cavity communicating with the dust detection air pipe.