Title:
PM2.5 CONCENTRATION DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/005312
Kind Code:
A1
Abstract:
A PM2.5 concentration detection system, comprising: an air pump (11) used for extracting air to be detected; a laser sensor (12) connected to the air pump (11) and used for detecting dust particles in the air to be detected and converting same into an electrical signal; an operation amplifier (13) connected to the laser sensor (12) and used for amplifying the electrical signal; a microcontroller (14) connected to the operation amplifier (13) and used for analysing, correcting and converting the amplified electrical signal according to a curve parameter obtained by a test; a display screen (15) connected to the microcontroller (14) and used for displaying the output result of the microcontroller (14); and a power supply system for supplying power for the system. The present invention is applicable to the field of environmental detection, and accurately and efficiently measures the PM2.5 concentration in real time by analysing and correcting the number concentration obtained by the detection of the laser sensor and converting same into the mass concentration using a microcontroller (14).
Inventors:
TONG ZHENG (CN)
Application Number:
PCT/CN2012/078226
Publication Date:
January 09, 2014
Filing Date:
July 05, 2012
Export Citation:
Assignee:
CHINAWAY ENVIRONMENTAL TECHNOLOGY CO LTD (CN)
TONG ZHENG (CN)
TONG ZHENG (CN)
International Classes:
G01N21/27
Foreign References:
| CN201607390U | 2010-10-13 | |||
| CN101598657A | 2009-12-09 | |||
| CN202013208U | 2011-10-19 | |||
| US5751423A | 1998-05-12 | |||
| US20050218351A1 | 2005-10-06 |
Other References:
YANG, YONGJIE ET AL.: "Research on a Particulate Matter Detection and Warning System", JOURNAL OF NANTONG UNIVERSITY (NATURAL SCIENCE EDITION), vol. 8, no. 3, September 2009 (2009-09-01), pages 21 - 25
WANG, HULI ET AL.: "Study of Pocket Multi-function Measuring Instrument of Dust", INSTRUMENT TECHNIQUE AND SENSOR, April 2005 (2005-04-01), pages 17 - 19
JIANG, LONGZHANG: "Principle and Maintenance of JKF-1 Laser Inhalation Dust Analyzer", INTRUMENTATION ANALYSIS MONITORING, January 1993 (1993-01-01), pages 9 - 11
WANG, HULI ET AL.: "Study of Pocket Multi-function Measuring Instrument of Dust", INSTRUMENT TECHNIQUE AND SENSOR, April 2005 (2005-04-01), pages 17 - 19
JIANG, LONGZHANG: "Principle and Maintenance of JKF-1 Laser Inhalation Dust Analyzer", INTRUMENTATION ANALYSIS MONITORING, January 1993 (1993-01-01), pages 9 - 11
Attorney, Agent or Firm:
SHENZHEN ZHONGYI PATENT AND TRADEMARK OFFICE (CN)
深圳中一专利商标事务所 (CN)
深圳中一专利商标事务所 (CN)
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