Atmospheric-particle sampler

An atmospheric particulate matter and sampler technology, applied in sampling devices and other directions, can solve the problems of single flow setting, unfavorable handling, and heavy weight, and achieve the effects of intuitive flow display, compact design structure, and light weight.

Inactive Publication Date: 2013-12-04
GRADUATE SCHOOL OF THE CHINESE ACAD OF SCI GSCAS
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  • Abstract
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Problems solved by technology

The main disadvantages of this type of commercial particle sampler: 1) Generally, it is bulky and heavy, which is not conducive to handling; 2) The most important thing is that when sampling, the volume flow rate of the sample will be changed due to the influence of daily changes in temperature and pressure. Unable to perform temperature and pressure compensation; 3) The general flow setting is single, which cannot meet the needs of multi-component analysis of particulate matter; 4) Commercial samplers are generally rarely able to collect meteorological parameters at the same time

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Embodiment Construction

[0010] Atmospheric particle sampler is mainly composed of sampling system, aerosol capture system, flow control system, human-computer interaction system, pneumatic system, single-chip microcomputer and some sensors. The specific implementation method is: 1. The air in the environment enters the aerosol sampler after the particle size selector (1); Three. Each channel is precisely controlled by the flow control board (3), flow sensor (5) and proportional valve (6) to reach the preset value; four. The single-chip microcomputer (15) collects the temperature sensor ( 11) and pressure sensor (12) data, and carry out temperature and pressure compensation calculation to sampling volume flow in real time; 5. Single-chip microcomputer (15) collects data of humidity sensor (10), wind speed and direction sensor (9) simultaneously; 6. Instrument operating parameters and operating status are displayed by the liquid crystal display (13), and sampling parameters, data storage and output par...

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Abstract

The application discloses a self-developed binary-channel atmospheric-particle sampler. The sampler employs a cyclone cutter for sorting, and therefore the total suspended particles, inhalable particles and particles capable of entering into lugs in the atmospheric environment can be collected and sampled by filtering membranes. The flow of each channel is set by a single chip microcomputer and the flows are accurately controlled by proportioning valves, flow sensors and control panels to reach a preset value. In addition, the single chip microcomputer can perform pressure and temperature compensating calculation for the flows so as to ensure that the volume flows of the introduction port are constant. The sampler can also collect pressure, temperature, humidity, wind speed, wind direction, and other meteorological parameters. The sampler has characteristics of compact structure of the complete machine design, small size, light weight, capability of automatic timing, visual flow display, safety, reliability, etc.. The sampler is suitable for being used on site.

Description

Technical field [0001] The present invention designs and develops a kind of atmospheric particulate matter sampler independently, can the total suspended particulate matter (TSP) in the atmosphere, respirable particulate matter (PM) 10 ), particulate matter that can enter the lungs (or fine particulate matter, PM 2.5 ) for accurate sampling. Background technique [0002] Atmospheric particulate matter refers to solid or liquid particles dispersed in the air with an aerodynamic equivalent diameter of 0.001-100 μm. Particulate matter with an aerodynamic equivalent diameter of ≤100 μm, ≤10 μm, and ≤2.5 μm are called total suspended particulate matter (TSP), respirable particulate matter (PM), respectively. 10 ) and particulate matter (PM 2.5 ). Particulate matter can be deposited in different positions of the respiratory tract due to different particle sizes, and has different impacts on human health. Therefore, the monitoring of particles of different particle sizes has b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22
Inventor 张阳张元勋王羽琴刘红杰邓建国
Owner GRADUATE SCHOOL OF THE CHINESE ACAD OF SCI GSCAS
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