CN103234881A - Atmospheric particulate matter monitor - Google Patents
Atmospheric particulate matter monitor Download PDFInfo
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- CN103234881A CN103234881A CN2013101209575A CN201310120957A CN103234881A CN 103234881 A CN103234881 A CN 103234881A CN 2013101209575 A CN2013101209575 A CN 2013101209575A CN 201310120957 A CN201310120957 A CN 201310120957A CN 103234881 A CN103234881 A CN 103234881A
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention discloses an Atmospheric particulate matter monitor comprising a sampling tube (12), a heater (13), a monitoring device (3), a mass flow controller (7), a dynamic humidity control system (14), and a gas suction pump (10). A flow dynamic control system (9) is arranged in the monitoring device (3). The flow dynamic control system (9) comprises an embedded microprocessor (4), an analog to digital converter (6), and a digital to analog converter (8). A temperature sensor (2) connected with the embedded microprocessor (4) is arranged on the sampling tube (12). An atmospheric pressure sensor (5) connected with the embedded microprocessor (4) is arranged on the flow dynamic control system (9). The mass flow controller (7) is connected with the analog to digital converter (6) and the digital to analog converter (8) in series. With the sampling flow dynamic control system, no matter how the environmental temperature and atmospheric pressure at a sampling port change, the flow at the sampling port can be dynamically adjusted within a preset precision range in real time. Because the flow at the sampling port is constant and stable, monitor measuring precision of atmospheric particulate matter concentration is improved.
Description
Technical field
The present invention relates to a kind of atmosphere particle monitoring instrument.
Background technology
When measuring the concentration of Atmospheric particulates with the atmosphere particle monitoring instrument, need know the flow value of thief hatch, the accuracy of flow value is more high, and the precision of the concentration value of measured Atmospheric particulates is just more high.Generally speaking, mass flowmeter is mounted in the airborne particulate monitor main frame, environment temperature and the atmospheric pressure at thief hatch place are not introduced the conversion that flow control system is marked condition and operating mode, so the flow value that records is the flow value at place in the atmosphere particle monitoring instrument main frame, so flow value that this value can not the actual response thief hatch, if flow is inaccurate, the atmosphere particle concentration value that converts according to flow is also just inaccurate so.
Summary of the invention
The objective of the invention is to solve the problem of accurate calculating atmosphere particle concentration value.
The technical solution used in the present invention is: a kind of atmosphere particle monitoring instrument, comprise sampling pipe, well heater, monitoring device, mass flow controller, dynamic psychrometric control system, aspiration pump, be provided with the flow dynamics control system in the described monitoring device, described flow dynamics control system comprises embedded microprocessor, analog to digital converter and digital to analog converter; Described sampling pipe is provided with the temperature sensor that is connected with embedded microprocessor; Described flow dynamics control system is provided with the atmosphere pressure sensor that is connected with embedded microprocessor.
As a further improvement on the present invention, described mass flow controller is connected in series with analog to digital converter and digital to analog converter.
The beneficial effect that the present invention adopts is: by the sampling flow kinetic-control system has been installed, and no matter environment temperature and atmospheric how variation of thief hatch, the flow of thief hatch all can dynamically be adjusted in the accuracy rating of setting in real time.Since the constant flow of thief hatch with stablize constantly, just improved so monitor is measured the precision of atmosphere particle concentration.
Description of drawings
Fig. 1 is synoptic diagram of the present invention.
Shown in the figure: 2 temperature sensors, 3 monitoring devices, 4 embedded microprocessors, 5 atmosphere pressure sensors, 6 analog to digital converters, 7 mass flow controllers, 8 digital to analog converters, 9 flow dynamics control system, 10 aspiration pumps, 12 sampling pipes, 13 well heaters, 14 dynamic psychrometric control system.
Embodiment
Below in conjunction with Fig. 1, present embodiment comprises sampling pipe 12, well heater 13, monitoring device 3, mass flow controller 7, dynamic psychrometric control system 14, aspiration pump 10, atmosphere vent pipe 11, be provided with flow dynamics control system 9 in the described monitoring device 3, described flow dynamics control system 9 comprises embedded microprocessor 4, analog to digital converter 6 and digital to analog converter 8; Described sampling pipe 12 is provided with the temperature sensor 2 that is connected with embedded microprocessor 4; Described flow dynamics control system 9 is provided with the atmosphere pressure sensor 5 that is connected with embedded microprocessor 4; Described mass flow controller 7 is connected in series with analog to digital converter 6 and digital to analog converter 8; How no matter the temperature of thief hatch change, how no matter atmospheric pressure change, and the operating mode flow at its thief hatch place all is to change in the tolerance band of setting.Because embedded microprocessor 4 is calculated the actual flow of thief hatch according to the thermometer of atmospheric pressure and thief hatch, when actual flow is higher than the flow value of setting, provide corresponding input voltage that its by-pass valve control turned down by digital to analog converter 8 to mass flow controller 7 by embedded microprocessor 4, thereby the actual flow of realizing thief hatch reduces, flow information after will reducing is input to embedded microprocessor 4 by analog to digital converter 6 again and calculates the value that whether reaches setting again, and so circulation is till the value that reaches setting.Equally, if the flow of thief hatch is less than the value of setting, the micrometer processor opens greatly the by-pass valve control on the mass flow controller by digital to analog converter, the purpose that increases with the actual flow that reaches thief hatch, flow information after will opening greatly by analog to digital converter simultaneously inputs to embedded microprocessor to carry out the signal processing and judges, is purpose to reach setting value.By the sampling flow kinetic-control system has been installed, no matter environment temperature and atmospheric how variation of thief hatch, the flow of thief hatch all can dynamically be adjusted in the accuracy rating of setting in real time.Since the constant flow of thief hatch with stablize constantly, just improved so monitor is measured the precision of atmosphere particle concentration.
Claims (2)
1. atmosphere particle monitoring instrument, comprise sampling pipe (12), monitoring device (3), well heater (13), mass flow controller (7), dynamic psychrometric control system (14), aspiration pump (10), it is characterized in that being provided with in the described monitoring device (3) flow dynamics control system (9), described flow dynamics control system (9) comprises embedded microprocessor (4), analog to digital converter (6) and digital to analog converter (8); Described sampling pipe (12) is provided with the temperature sensor (2) that is connected with embedded microprocessor (4); Described flow dynamics control system (9) is provided with the atmosphere pressure sensor (5) that is connected with embedded microprocessor (4).
2. according to claim 1, it is characterized in that described analog to digital converter (6) and digital to analog converter (8) are connected in series with mass flow controller (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101209575A CN103234881A (en) | 2013-04-09 | 2013-04-09 | Atmospheric particulate matter monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101209575A CN103234881A (en) | 2013-04-09 | 2013-04-09 | Atmospheric particulate matter monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103234881A true CN103234881A (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101209575A Pending CN103234881A (en) | 2013-04-09 | 2013-04-09 | Atmospheric particulate matter monitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020020A (en) * | 2014-06-11 | 2014-09-03 | 中国环境科学研究院 | Multifunctional onboard powerless sampler |
| CN104458522A (en) * | 2014-11-27 | 2015-03-25 | 中盟科创（深圳）科技发展有限公司 | Atmospheric particulate detection system based on mobile terminal and detection method |
| CN107045043A (en) * | 2017-05-26 | 2017-08-15 | 北京小米移动软件有限公司 | Detection of Air Quality method and device |
| CN108303356A (en) * | 2017-12-29 | 2018-07-20 | 安徽蓝盾光电子股份有限公司 | A kind of atmosphere particulate matter monitoring instrument |
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| US20030235926A1 (en) * | 2002-06-24 | 2003-12-25 | Particle Measuring Systems, Inc. | Molecular contamination monitoring system and method |
| JP2006226906A (en) * | 2005-02-18 | 2006-08-31 | Horiba Ltd | Instrument for measuring concentration of suspended particulate matter |
| WO2007060969A1 (en) * | 2005-11-28 | 2007-05-31 | Dkk-Toa Corporation | Floating particle measuring device |
| CN201355339Y (en) * | 2008-07-18 | 2009-12-02 | 上海市计量测试技术研究院 | Calibration device of automatic atmospheric particulate matter monitoring system |
| EP2237017A2 (en) * | 2009-03-31 | 2010-10-06 | Ibiden Co., Ltd. | Particulate matter concentration measuring apparatus |
| CN102608010A (en) * | 2012-03-28 | 2012-07-25 | 姚水良 | Particulate matter (PM) detecting method and equipment |
| CN102818905A (en) * | 2012-09-11 | 2012-12-12 | 河北先河环保科技股份有限公司 | Automatic two-channel atmospheric particulate monitoring device |
| CN202661356U (en) * | 2012-06-14 | 2013-01-09 | 苏州苏净仪器自控设备有限公司 | Instrument for monitoring tiny particulate matters in air |
| CN203148816U (en) * | 2013-04-09 | 2013-08-21 | 安徽省安光环境光学工程技术研究中心有限公司 | Atmospheric particle monitor |
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2013
- 2013-04-09 CN CN2013101209575A patent/CN103234881A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030235926A1 (en) * | 2002-06-24 | 2003-12-25 | Particle Measuring Systems, Inc. | Molecular contamination monitoring system and method |
| JP2006226906A (en) * | 2005-02-18 | 2006-08-31 | Horiba Ltd | Instrument for measuring concentration of suspended particulate matter |
| WO2007060969A1 (en) * | 2005-11-28 | 2007-05-31 | Dkk-Toa Corporation | Floating particle measuring device |
| CN201355339Y (en) * | 2008-07-18 | 2009-12-02 | 上海市计量测试技术研究院 | Calibration device of automatic atmospheric particulate matter monitoring system |
| EP2237017A2 (en) * | 2009-03-31 | 2010-10-06 | Ibiden Co., Ltd. | Particulate matter concentration measuring apparatus |
| CN102608010A (en) * | 2012-03-28 | 2012-07-25 | 姚水良 | Particulate matter (PM) detecting method and equipment |
| CN202661356U (en) * | 2012-06-14 | 2013-01-09 | 苏州苏净仪器自控设备有限公司 | Instrument for monitoring tiny particulate matters in air |
| CN102818905A (en) * | 2012-09-11 | 2012-12-12 | 河北先河环保科技股份有限公司 | Automatic two-channel atmospheric particulate monitoring device |
| CN203148816U (en) * | 2013-04-09 | 2013-08-21 | 安徽省安光环境光学工程技术研究中心有限公司 | Atmospheric particle monitor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020020A (en) * | 2014-06-11 | 2014-09-03 | 中国环境科学研究院 | Multifunctional onboard powerless sampler |
| CN104458522A (en) * | 2014-11-27 | 2015-03-25 | 中盟科创（深圳）科技发展有限公司 | Atmospheric particulate detection system based on mobile terminal and detection method |
| CN107045043A (en) * | 2017-05-26 | 2017-08-15 | 北京小米移动软件有限公司 | Detection of Air Quality method and device |
| CN108303356A (en) * | 2017-12-29 | 2018-07-20 | 安徽蓝盾光电子股份有限公司 | A kind of atmosphere particulate matter monitoring instrument |
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Application publication date: 20130807 |
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