CN201788149U - Light scattering type particulate matter on-line monitor with humidity correcting function - Google Patents
Light scattering type particulate matter on-line monitor with humidity correcting function Download PDFInfo
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- CN201788149U CN201788149U CN2010205270019U CN201020527001U CN201788149U CN 201788149 U CN201788149 U CN 201788149U CN 2010205270019 U CN2010205270019 U CN 2010205270019U CN 201020527001 U CN201020527001 U CN 201020527001U CN 201788149 U CN201788149 U CN 201788149U
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Abstract
A light scattering type particulate matter on-line monitor with a humidity correcting function consists of a particulate matter measuring module, a humidity measuring module, a control module, a filter buffering module, a sampling air pump and a power module. The control module controls operation of the particulate matter measuring module and the humidity measuring module, acquires states of the modules, realizes man-machine interaction through a display screen and a keyboard, is capable of realizing fusion of particulate matter measured data and humidity measured data by the aid of the algorithm embedded in the control module, corrects data of concentration of particulate matters by the aid of relative humidity data, obtains final measurement result, greatly eliminates influence to a common light scattering particulate matter measurer due to relative humidity data, and increases data measuring accuracy.
Description
Technical field
The utility model belongs to a kind of online environment monitoring instrument, especially for the online environment monitoring instrument of measuring atmospheric environment, source of atmospheric pollution pellet index.
Background technology
Along with developing rapidly of industrial economy, atmosphere polluting problem is more and more serious, and airborne pellet (hereinafter to be referred as particle) is given people has healthyly brought serious harm.According to statistics, the atmosphere major pollutants in national 75% city are pellets, and Beijing PM10 as the fate ratio of primary pollutant up to 95%.Thereby how discerning primary pollution source and take prophylactico-therapeutic measures to improve urban air-quality to pollution source, is the top priority of atmospheric environment improvement from now on.The disposal of pollutants situation and the Diffusion Law of particle be to effectively grasp, advanced monitoring means and a large amount of monitoring equipments needed.
The method that is used to monitor particulate in air at present mainly contains filter membrane weight method, microbalance method, β rays method and light scattering method.The filter membrane weight method is the basic skills of particle quality concentration determination, and principle is simple, and determination data is reliable, but measuring loaded down with trivial details, time-consuming, the heavy shortcoming of sampling instrument of process operation, can not provide test result immediately, can not realize on-line monitoring; The microbalance method can be implemented in line monitoring, and real-time is better, can a few minutes finish one-shot measurement, but temperature when measuring, humidity effect are bigger, and instrument heaviness, environmental requirement height, can not be in outdoor random installation; β radiation absorption method can be implemented in the line monitoring, but in cleaner air, needs the long cumulative time, and instrumental sensitivity and real-time are relatively poor; Light scattering flow assay method owned by France, concentration that can the real time on-line monitoring particulate in air, real-time and repeatability are very good, and the instrument volume is little, and is in light weight, easy and simple to handle, and noise is low, and good stability is that the ideal of particle on-line real time monitoring is selected.
Light scattering formula surveying instrument is used convenient and good stability, factor affecting is bigger but it is subjected to weather, particularly there is very big influence in relative humidity to the measurement data of instrument, therefore under the bigger weather of dense fog or sleet equal relative humidity, can cause light scattering formula particle monitoring instrument test data than mistake.
Summary of the invention
The purpose of this utility model provides a kind of light scattering formula atmosphere pellet on-line monitoring instrument with humidity calibration function, overcomes in traditional light scattering formula instrument because relative humidity is given the measuring error that instrument brought.
The accuracy of detection of this utility model can satisfy the requirement of country to the calibrating of pellet monitoring instrument, this apparatus measures cycle is short simultaneously, measured value accurately and reliably, integrated humidity sensor, and utilize humidity data that the particle concentration data are revised, both inherited the advantage of traditional light scattering formula particle surveying instrument, and can utilize the relative humidity data that instrument is surveyed the particle concentration data again in real time simultaneously and revise, improved the reliability of light scattering formula instrument greatly.
For achieving the above object, the technical solution of the utility model is: a kind of light scattering formula particle on-line monitoring instrument with humidity correction, it is characterized in that by the particle measurement module, the moisture measurement module, control module, filter buffer module, sampling air pump and power module are formed, the draft tube of particle measurement module communicates with atmosphere, the escape pipe of particle measurement module links to each other with the air intake opening that filters buffer module, the gas outlet of filtering buffer module links to each other with the sampling air pump, sample gas is by the particle measurement module, carrying out particle by the particle measurement module measures, the operation of control module control particle measurement module and moisture measurement module, the sampling air pump in the described sampling module adopts membrane pump.
Light scattering formula particle on-line monitoring instrument with humidity correction of the present utility model, the particle measurement module is made up of light source, light beam shaping module, measuring chamber, photoelectric conversion module and light trapping.
Light scattering formula particle on-line monitoring instrument with humidity correction of the present utility model, the moisture measurement module mainly is made up of humidity sensor and Acquisition Circuit thereof.
Light scattering formula particle on-line monitoring instrument with humidity correction of the present utility model, described control module is made up of controller, external interface and external unit, and its middle controller is made up of primary controller, data acquisition unit, and external unit comprises keyboard and display screen.
Light scattering formula particle on-line monitoring instrument with humidity correction of the present utility model, power module is made up of supply voltage modular converter, accumulator, sun controller and solar panel.
Instrument is by the sampling air pump, filter the gas communication passage of buffer module and particle measurement module and finish gas sampling jointly, the sample gas particle measurement module of flowing through, at the particle measurement module, the light that light source sent obtains required beam shape through the light beam shaping module shaping, just can the certain light of scattering when the sampling air flow that carries certain granules passes light beam, by collecting its scattered light, through photoelectric conversion module, change light signal into electric signal, finish the amplification of electric signal by signal conditioning circuit, filtering, the control module control instrument of instrument is finished this electrical signal collection and is gathered the humidity sensor signal, carry out the data fusion of two signals, finally obtain revised particle concentration data, eliminated greatly because relative humidity of atomsphere is given the influence that surveying instrument brought based on light scattering principle, improved measuring accuracy to a great extent.
Description of drawings
Below in conjunction with accompanying drawing the utility model is made an explanation.
Fig. 1 is the structural principle synoptic diagram of the utility model example.
Fig. 2 is the automatic measurement schematic flow sheet of the utility model example.
Fine rule is a signal wire among Fig. 1, comprises circuits such as signal output, input.
Embodiment
As shown in Figure 1: example with light scattering formula particle on-line monitoring instrument of humidity correction, instrument mainly is made up of following module, comprise: particle measurement module 8, moisture measurement module 6, control module 5, filter buffer module 9, sampling air pump 10 and power module 1, control module is controlled particle measurement module and moisture measurement module simultaneously, be control module by when obtaining the important evidence of electric signal that is produced by the particle scattered light signal, gather atmospheric environment relative humidity data by humidity sensor obtained as count particles substrate concentration data.
At first say gas sampling process, sampling process is the passive type sampling, the sampling air pump extracts sample gas with certain flow velocity, gas enters measuring chamber 17 by the draft tube of particle measurement module, measure, gas enters the filtration snubber assembly after by measuring chamber, after the outlet nozzle of sampling air pump is discharged tool housing.Mainly acting as of draft tube guarantees that gas passes through measuring chamber with certain speed, and the main effect of filtering snubber assembly then is to obtain stable air-flow, and the protection air pump.The stable assurance instrument of this gas sampling module normally moves.
Above-mentioned sampling air pump adopts membrane pump, adopts supporting pump line, selects different sampling pumps for use according to the traffic requirement of sampling.
The particle measurement module is responsible for collecting the scattered light of the particle in the sample gas that enters measuring chamber, finish final signal measurement, its light path part is mainly by LASER Light Source 16, beam shaping unit and light trapping 18 are formed, be equipped with supporting signal processing apparatus 7(signal condition multiplying arrangement), by the collection of control module realization signal, data acquisition module is finished the collection of data, the particle concentration value according to the curve primary Calculation of demarcating.
The moisture measurement module is mainly finished the measurement of atmospheric environment relative humidity, humidity sensor is by obtaining the voltage signal that relative humidity data in the air are converted into 0～3V, realize the collection of signal by control module, data acquisition module is finished the collection of data, calculates the relative humidity data of atmosphere according to the opisometer of demarcating.
Control module is made up of controller, external interface and external unit, as Fig. 1 middle controller 15 are control cores of instrument, form by primary controller, data acquisition unit etc., can be according to the sampling interval of stipulating in the kernel program, finish collection, and carry out data fusion, utilize the relative humidity data that the particle concentration data are revised by embedded algorithm to particle concentration data and relative humidity of atomsphere data, finally obtain revised particle concentration data, be The ultimate results.External unit mainly comprises keyboard 2 and display screen 3, and information such as the state of instrument, data show the user by display screen 3, realizes various feature operations by keyboard 2, and this is the function that peripheral hardware is partly finished.
The operation that power module 1 is mainly instrument provides power supply, voltage transformation module 14 mainly is that the 12V voltage transitions that accumulator 12 is exported is the required voltages of each components and parts of instrument, solar cell 11 is by controller for solar 13, can charge to accumulator, not only make instrument be applicable to the field operation of no civil power and energy-conserving and environment-protective.
As shown in Figure 1, external interface 4, promptly the peripheral interface of instrument is the RS232 communication interface, can finish the derivation of Monitoring Data by external relevant device, the reception and the transmission of serial ports instruction realize with outside mutual.
Can move automatically after instrument powers on, need not manually-operated.
The major function that instrument provides comprises: curvature correction, data storage, parameter are provided with etc.
Tell about the workflow of instrument below, as shown in Figure 2.During instrument work, the air pump extracting gases of at first sampling, sample gas enters measuring chamber by draft tube, in measuring chamber, particle produces light pulse signal by beam area in the sample gas, by photoelectric conversion module light pulse signal is converted to electric impulse signal, by signal conditioning circuit this pulse signal is carried out amplification filtering then, then this pulse signal is gathered by the high-speed data acquisition treatment circuit, detect, identification and counting, and this data transmission to microcontroller calculated with processing obtain the particle concentration data, meanwhile microcontroller receives the humidity sensor signal of gathering, obtain the relative humidity data by calculating with processing, and carry out data fusion by embedded algorithm, utilize the relative humidity data that the particle concentration data are revised, finally obtain revised particle concentration data, be The ultimate results, finish the one-shot measurement process.
Claims (5)
1. one kind has the light scattering formula particle on-line monitoring instrument that humidity is proofreaied and correct, it is characterized in that by the particle measurement module, the moisture measurement module, control module, filter buffer module, sampling air pump and power module are formed, the draft tube of particle measurement module communicates with atmosphere, the escape pipe of particle measurement module links to each other with the air intake opening that filters buffer module, the gas outlet of filtering buffer module links to each other with the sampling air pump, sample gas is by the particle measurement module, carrying out particle by the particle measurement module measures, the operation of control module control particle measurement module and moisture measurement module, the sampling air pump in the described sampling module adopts membrane pump.
2. the light scattering formula particle on-line monitoring instrument with humidity correction as claimed in claim 1, it is characterized in that: the particle measurement module is made up of light source, light beam shaping module, measuring chamber, photoelectric conversion module and light trapping.
3. have a light scattering formula particle on-line monitoring instrument that humidity is proofreaied and correct described in claim 1 or 2, it is characterized in that: the moisture measurement module mainly is made up of humidity sensor and Acquisition Circuit thereof.
4. the light scattering formula particle on-line monitoring instrument with humidity correction as claimed in claim 3, it is characterized in that: described control module is made up of controller, external interface and external unit, its middle controller is made up of primary controller, data acquisition unit, and external unit comprises keyboard and display screen.
5. the light scattering formula particle on-line monitoring instrument with humidity correction as claimed in claim 4, it is characterized in that: described power module is made up of supply voltage modular converter, accumulator, sun controller and solar panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205270019U CN201788149U (en) | 2010-09-14 | 2010-09-14 | Light scattering type particulate matter on-line monitor with humidity correcting function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205270019U CN201788149U (en) | 2010-09-14 | 2010-09-14 | Light scattering type particulate matter on-line monitor with humidity correcting function |
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| CN201788149U true CN201788149U (en) | 2011-04-06 |
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| CN2010205270019U Expired - Lifetime CN201788149U (en) | 2010-09-14 | 2010-09-14 | Light scattering type particulate matter on-line monitor with humidity correcting function |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706780A (en) * | 2012-06-14 | 2012-10-03 | 苏州苏净仪器自控设备有限公司 | Instrument for monitoring small particulate matters in air |
| CN103033399A (en) * | 2012-12-24 | 2013-04-10 | 南京埃森环境技术有限公司 | Atmospheric multiparameter transmitter for PM2.5 particulate matter monitor and use method thereof |
| CN103954541A (en) * | 2014-05-13 | 2014-07-30 | 中国科学院大气物理研究所 | Stereoscopic monitoring system for atmospheric fine particulate matter |
| CN104483248A (en) * | 2014-12-30 | 2015-04-01 | 中科宇图天下科技有限公司 | Regional particulate matter stereoscopic monitoring system and method |
| CN105806756A (en) * | 2016-01-30 | 2016-07-27 | 济南大陆机电股份有限公司 | Method for correcting indoor and outdoor PM2.5 monitoring results by virtue of meteorological parameters |
| CN114646102A (en) * | 2022-03-14 | 2022-06-21 | 青岛海尔空调器有限总公司 | Washing air conditioner and purification control method thereof |
-
2010
- 2010-09-14 CN CN2010205270019U patent/CN201788149U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706780A (en) * | 2012-06-14 | 2012-10-03 | 苏州苏净仪器自控设备有限公司 | Instrument for monitoring small particulate matters in air |
| CN102706780B (en) * | 2012-06-14 | 2014-01-08 | 江苏苏净集团有限公司 | Instrument for monitoring small particulate matters in air |
| CN103033399A (en) * | 2012-12-24 | 2013-04-10 | 南京埃森环境技术有限公司 | Atmospheric multiparameter transmitter for PM2.5 particulate matter monitor and use method thereof |
| CN103033399B (en) * | 2012-12-24 | 2015-02-04 | 南京埃森环境技术有限公司 | Atmospheric multiparameter transmitter for PM2.5 particulate matter monitor and use method thereof |
| CN103954541A (en) * | 2014-05-13 | 2014-07-30 | 中国科学院大气物理研究所 | Stereoscopic monitoring system for atmospheric fine particulate matter |
| CN104483248A (en) * | 2014-12-30 | 2015-04-01 | 中科宇图天下科技有限公司 | Regional particulate matter stereoscopic monitoring system and method |
| CN105806756A (en) * | 2016-01-30 | 2016-07-27 | 济南大陆机电股份有限公司 | Method for correcting indoor and outdoor PM2.5 monitoring results by virtue of meteorological parameters |
| CN105806756B (en) * | 2016-01-30 | 2019-01-18 | 济南大陆机电股份有限公司 | A method of indoor and outdoor pm2.5 monitoring result is corrected using meteorologic parameter |
| CN114646102A (en) * | 2022-03-14 | 2022-06-21 | 青岛海尔空调器有限总公司 | Washing air conditioner and purification control method thereof |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20110406 |
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