CN217765970U - High-efficient accurate PM2.5 calibration device for sensor - Google Patents
High-efficient accurate PM2.5 calibration device for sensor Download PDFInfo
- Publication number
- CN217765970U CN217765970U CN202221617440.8U CN202221617440U CN217765970U CN 217765970 U CN217765970 U CN 217765970U CN 202221617440 U CN202221617440 U CN 202221617440U CN 217765970 U CN217765970 U CN 217765970U
- Authority
- CN
- China
- Prior art keywords
- calibration
- sensor
- accurate
- ventilating duct
- high efficiency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 16
- 239000002245 particle Substances 0.000 description 9
- 239000000428 dust Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000004994 reproductive system Anatomy 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to the technical field of calibration devices, in particular to a high-efficiency and accurate calibration device for a PM2.5 sensor, which comprises a PM2.5 sensor, wherein the PM2.5 sensor is detachably arranged on a calibration assembly, and a suction fan is fixedly arranged in the calibration assembly; this high-efficient accurate calibration device for PM2.5 sensor, the calibration gas that will let in that can be better is with the even PM2.5 sensor that passes of mode of air current for PM2.5 sensor can be better the normal atmospheric environment of simulation in order to obtain accurate demarcation measuring value, in addition, this calibration device is convenient to use, simple structure convenient operation, can not receive data transmission line's influence, can be fine avoid other structures influence calibration results at the calibration in-process, make and to possess better detection accuracy after the demarcation.
Description
Technical Field
The utility model relates to a calibration device technical field specifically is a high-efficient accurate calibration device for PM2.5 sensor.
Background
The PM2.5 sensor is also called a dust sensor, and has various detection principles, but the performance of an infrared method is poor, and three methods, namely a ray method, a micro-oscillation balance method and a weight method, are difficult to apply and have high price, so the laser scattering principle is more adopted to measure the PM2.5 concentration on the market at present, the PM2.5 sensor can be used for detecting the dust concentration in the ambient air, the PM2.5 refers to particles with the equivalent diameter of aerodynamics in the ambient air being less than or equal to 2.5 micrometers, although the PM2.5 is only a component with little content in the earth atmospheric components, the PM2.5 sensor has important influence on the air quality, the visibility and the like, the particle diameter of the PM2.5 is small, compared with the thicker atmospheric particles, the PM2.5 has small particle size, large area and strong activity, is easy to be accompanied by toxic and harmful substances and the like, has long conveying distance in the atmosphere, has great influence on the health of a human body and the quality of the atmospheric environment, can be suspended in the air for a long time, represents that the air pollution is more serious when the content concentration of the PM2.5 in the air is higher, the PM2.5 can enter the lung and blood, if the PM has germs, the PM can have great harm to the human body, including a respiratory system, a cardiovascular system and even a reproductive system, and the PM2.5 sensor can be used in outdoor weather stations, raise dust monitoring, libraries, archives, industrial plants and other places needing PM2.5 concentration monitoring;
the device adopts an industrial personal computer to control the concentration of mixed gas PM2.5 in a test cavity, the mixed gas is detected by a PM2.5 sensor and a standard sensor to obtain detection data, the PM2.5 sensor is calibrated by the industrial personal computer according to the error between the measurement values of the PM2.5 sensor and the standard sensor, the individual detection and calibration of the PM2.5 sensor produced in batch are realized, the measurement precision of the PM2.5 sensor is ensured, the precision of the PM2.5 sensor is improved, the consistency in use of products is ensured, the rework amount is reduced, and the production cost is reduced;
although the device can ensure the measurement precision of the PM2.5 sensor and improve the precision of the PM2.5 sensor, whether the PM2.5 sensor in use can normally carry out detection work or not cannot be judged in long-term use, so that the PM2.5 sensor can be calibrated regularly and conveniently, the calibration process is simple and convenient as far as possible, and meanwhile, the calibration precision is accurate. In view of this, we propose a calibration device for a PM2.5 sensor that is efficient and accurate.
SUMMERY OF THE UTILITY MODEL
In order to make up for above deficiency, the utility model provides a high-efficient accurate PM2.5 calibration device for sensor.
The technical scheme of the utility model is that:
an efficient and accurate calibration device for a PM2.5 sensor comprises the PM2.5 sensor, wherein the PM2.5 sensor is detachably arranged on a calibration assembly, and a suction fan is fixedly arranged in the calibration assembly;
the calibration assembly comprises a ventilating duct, two connecting holes which correspond to the air inlet in position are formed in the ventilating duct, and the air inlet is installed in the connecting holes which are matched with the corresponding positions in size in an inserting and matching mode.
Preferably, the PM2.5 sensor includes a module box, two air inlets are fixedly connected below the module box, and a plurality of airflow column holes distributed uniformly are formed in the air inlets.
Preferably, one side of each of the two air inlets is provided with a data connecting line, and the data connecting lines are fixedly arranged on the module box.
Preferably, a suction fan with a matched size is fixedly installed on one side of the ventilating duct, and the suction fan sucks calibration gas to enable the calibration gas to pass through the ventilating duct from the calibration injection port and then to be discharged.
Preferably, the other side of the ventilating duct is provided with a calibration injection port, and the calibration injection port needs to be far enough from the connecting hole for a proper distance.
Preferably, the module box is internally provided with a photoelectric sensor and a singlechip which are mutually connected in series.
Preferably, the data connecting line is connected with the single chip microcomputer inside the module box and is positioned outside the ventilating duct.
Compared with the prior art, the beneficial effects of the utility model are that:
this high-efficient accurate calibration device for PM2.5 sensor, the calibration gas that will let in that can be better is with the even PM2.5 sensor that passes of mode of air current for PM2.5 sensor can be better the normal atmospheric environment of simulation in order to obtain accurate demarcation measuring value, in addition, this calibration device is convenient to use, simple structure convenient operation, can not receive data transmission line's influence, can be fine avoid other structures influence calibration results at the calibration in-process, make and to possess better detection accuracy after the demarcation.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the overall structure of the present invention;
fig. 3 is a partially enlarged schematic view of the present invention.
The meaning of the individual reference symbols in the figures is:
1. a PM2.5 sensor; 11. a modular cartridge; 12. an air inlet; 121. an airflow column hole; 13. a data connection line;
2. calibrating the component; 21. a funnel; 22. connecting holes; 23. calibrating the injection port;
3. a suction fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1-3, the present invention details the above technical solution by the following embodiments:
a high-efficiency and accurate calibration device for a PM2.5 sensor comprises a PM2.5 sensor 1, a PM2.5 sensor 1 is detachably arranged on a calibration component 2, and a suction fan 3 is fixedly arranged in the calibration component 2;
the calibration component 2 comprises a ventilating duct 21, two connecting holes 22 corresponding to the positions of the air inlets 12 are formed in the ventilating duct 21, the PM2.5 sensor 1 comprises a module box 11, the two air inlets 12 are fixedly connected to the lower portion of the module box 11, a plurality of airflow column holes 121 uniformly distributed are formed in the air inlets 12, and calibration gas can be uniformly sucked through the airflow column holes 121 when being sucked.
One side of two air inlets 12 is equipped with data connecting wire 13, and data connecting wire 13 fixed mounting is on module box 11, and module box 11 is inside to be equipped with mutual photoelectric sensor and the singlechip of establishing ties, and data connecting wire 13 is connected and is lieing in the outside of draft tube 21 with the inside singlechip of module box 11, can avoid data connecting wire 13 in the inside of draft tube 21 and influence the gaseous evenly distributed of demarcation, also is convenient for data connecting wire 13 to connect outside receiving arrangement simultaneously.
The suction fan 3 with the matched size is fixedly installed on one side of the ventilating duct 21, the calibration injection hole 23 is formed in the other side of the ventilating duct 21, calibration gas is sucked by the suction fan 3 and is discharged after passing through the ventilating duct 21 from the calibration injection hole 23, the calibration injection hole 23 needs to be spaced from the connecting hole 22 by a sufficient and proper distance, in order to enable the calibration gas to flow out in a uniformly dispersed state under the suction action of the suction fan 3, and the accuracy of calibration timing detection is facilitated.
It should be noted that, in the present embodiment, a laser scattering measurement principle is adopted, and specifically, an RS-PM type dust sensor is used, the working principle of the sensor is developed according to a light scattering principle, particles and molecules can generate a light scattering phenomenon under the irradiation of light, when a beam of light is incident to a measured particle field, the light is affected by scattering and absorption around the particles, then, the mass concentration of the particles with equivalent particle size in a unit volume is calculated according to a scientific and unique algorithm, and finally, data output is performed by using the data connection line 13, and the suction fan 3 can uniformly disperse the calibration gas, so that the PM2.5 sensor 1 can detect the specific calibration gas concentration for calibration.
According to the efficient and accurate calibration device for the PM2.5 sensor, in the embodiment, a user inserts and installs the lower air inlet 12 of the RS-PM type dust sensor on a calibration component, the suction fan 3 is opened, so that the suction fan 3 sucks calibration gas to enable the calibration gas to pass through the ventilation barrel 21 from the calibration injection port 23 and then to be discharged, the calibration injection port 23 of the device keeps a proper distance from the connecting hole 22, the calibration gas is sucked by the air inlet 12 in a uniformly dispersed state under the suction action of the suction fan 3, and redundant calibration gas is discharged, then the RS-PM type dust sensor can measure a specific PM2.5 concentration value, the user compares the calibration gas with the known PM2.5 concentration of the calibration gas to perform calibration according to the concentration, and re-calibration is not needed if the test value is accurate in an error range.
The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a high-efficient accurate calibration device for PM2.5 sensor, includes PM2.5 sensor (1), its characterized in that: the PM2.5 sensor (1) is detachably arranged on the calibration component (2), and a suction fan (3) is fixedly arranged in the calibration component (2);
the calibration component (2) comprises a ventilating duct (21), two connecting holes (22) which correspond to the air inlet (12) in position are formed in the ventilating duct (21), and the air inlet (12) is installed in the connecting holes (22) which are matched with the corresponding positions in size in a plug-in matching mode.
2. A calibration arrangement for a high efficiency accurate PM2.5 sensor as claimed in claim 1, wherein: the PM2.5 sensor (1) comprises a module box (11), wherein two air inlets (12) are fixedly connected to the lower portion of the module box (11), and a plurality of airflow column holes (121) which are uniformly distributed are formed in the air inlets (12).
3. A calibration arrangement for a high efficiency accurate PM2.5 sensor as claimed in claim 2, wherein: and one side of each of the two air inlets (12) is provided with a data connecting line (13), and the data connecting lines (13) are fixedly arranged on the module box (11).
4. A calibration arrangement for a high efficiency accurate PM2.5 sensor as recited in claim 1, wherein: and a suction fan (3) with the matched size is fixedly installed on one side of the ventilating duct (21), and the suction fan (3) sucks calibration gas to enable the calibration gas to pass through the ventilating duct (21) from the calibration injection port (23) and then to be discharged.
5. A calibration arrangement for a high efficiency accurate PM2.5 sensor as recited in claim 4, wherein: the other side of the ventilating duct (21) is provided with a calibration injection port (23), and the calibration injection port (23) needs to be spaced from the connecting hole (22) by a sufficient proper distance.
6. A calibration arrangement for a high efficiency accurate PM2.5 sensor according to claim 3 wherein: and a photoelectric sensor and a singlechip which are mutually connected in series are arranged in the module box (11).
7. A calibration arrangement for a high efficiency accurate PM2.5 sensor as recited in claim 3, wherein: the data connecting line (13) is connected with the single chip microcomputer in the module box (11) and is positioned on the outer side of the ventilating duct (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221617440.8U CN217765970U (en) | 2022-06-24 | 2022-06-24 | High-efficient accurate PM2.5 calibration device for sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221617440.8U CN217765970U (en) | 2022-06-24 | 2022-06-24 | High-efficient accurate PM2.5 calibration device for sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217765970U true CN217765970U (en) | 2022-11-08 |
Family
ID=83894735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221617440.8U Expired - Fee Related CN217765970U (en) | 2022-06-24 | 2022-06-24 | High-efficient accurate PM2.5 calibration device for sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217765970U (en) |
-
2022
- 2022-06-24 CN CN202221617440.8U patent/CN217765970U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0713591B2 (en) | Improved multi-channel gas analyzer and method of use | |
| CN105651662B (en) | Aerosol mass concentration optical detection device and detection method thereof | |
| ITRM970314A1 (en) | PORTABLE SYSTEM FOR BREATH-BY-BREATH MEASUREMENT OF THE METABOLIC PARAMETERS OF A SUBJECT, WITH TRANSMISSION OF DATA IN TELEMETRY AND | |
| CN206648924U (en) | Survey haze device and include the particulate matter detector of the survey haze device | |
| WO2016197300A1 (en) | High-precision microminiaturized particle sensor | |
| CN109620233A (en) | A kind of portable breath detection device | |
| CN107607449A (en) | A kind of device and method for detecting particulate matter quality concentration | |
| CN217765970U (en) | High-efficient accurate PM2.5 calibration device for sensor | |
| CN209432182U (en) | A kind of city camera system with atmospheric ambient air quality-monitoring function | |
| CN207096098U (en) | A kind of infrared leak detector of high accuracy | |
| CN103487489A (en) | Self-calibration exhaled nitric oxide analyzer | |
| CN213689514U (en) | Parameter monitoring and calibration system of gas detection equipment | |
| CN106443031A (en) | Bionic smell detection and analysis device based on dynamic gas distribution and detection and analysis method of bionic smell detection and analysis device | |
| CN205426736U (en) | Aerosol concentration by mass optical detection device | |
| CN215894386U (en) | Infrared multi-light-source multi-detector gas detection device | |
| CN216747021U (en) | Constant-speed sampling system for directly measuring waste gas particulate matters of fixed pollution source | |
| CN205656130U (en) | Portable indoor air quality monitoring devices based on singlechip | |
| CN206479447U (en) | A kind of gas measurement device | |
| CN214408247U (en) | Flue gas sampling device of gas water heater and flue gas analyzer | |
| CN208206729U (en) | A kind of fan-free laser class dust sensor | |
| CN206804481U (en) | Particulate matter detector | |
| CN208140628U (en) | A kind of novel gaseous state pollutant concentration electrochemical sensor | |
| CN209513607U (en) | A kind of multi-mode gas analyzing apparatus | |
| CN217901483U (en) | On-spot calibrating device of PM2.5 detector | |
| CN207232127U (en) | A kind of CEMS systems of secondary correction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221108 |