Title:
AIR TEST STRUCTURE, AIR FILTRATION DEVICE AND BREATHING MACHINE
Document Type and Number:
WIPO Patent Application WO/2023/125449
Kind Code:
A1
Abstract:
An air test structure, an air filtration device and a breathing machine. The structure comprises an air flow channel (1) for air circulation, a laser light source (2), a fluorescence filter (3), a fluorescence receiver (4), and a signal conversion circuit (5), wherein the laser light source (2), the fluorescence filter (3) and the fluorescence receiver (4) are located in the air flow channel (1); the laser light source (2) excites biological particles in the air flow channel (1) to generate scattered light and fluorescent light; the fluorescence filter (3) reflects the scattered light and can be transmitted by the fluorescent light; the fluorescence receiver (4) converts the fluorescent light into a target current signal; and the signal conversion circuit (5) converts the target current signal into a target voltage signal, such that a signal processing system (8) collects the target voltage signal and then determines the number of biological particles according to a voltage value of the target voltage signal.
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Inventors:
LIU YAWEI (CN)
ZHUANG ZHI (CN)
ZHENG FANG (CN)
TIAN XIN (CN)
ZHUANG ZHI (CN)
ZHENG FANG (CN)
TIAN XIN (CN)
Application Number:
PCT/CN2022/142087
Publication Date:
July 06, 2023
Filing Date:
December 26, 2022
Export Citation:
Assignee:
BMC TIANJIN MEDICAL CO LTD (CN)
International Classes:
B01D46/44; B01D46/88; G01N21/64
Foreign References:
| CN114307443A | 2022-04-12 | |||
| CN108375530A | 2018-08-07 | |||
| US20200018683A1 | 2020-01-16 | |||
| CN109954341A | 2019-07-02 | |||
| CN110967284A | 2020-04-07 | |||
| CN103940709A | 2014-07-23 | |||
| US20180372609A1 | 2018-12-27 | |||
| CN102135492A | 2011-07-27 |
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)
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