CN205941284U - Particle detection module and air quality detection device - Google Patents
Particle detection module and air quality detection device Download PDFInfo
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- CN205941284U CN205941284U CN201620816447.0U CN201620816447U CN205941284U CN 205941284 U CN205941284 U CN 205941284U CN 201620816447 U CN201620816447 U CN 201620816447U CN 205941284 U CN205941284 U CN 205941284U
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- air
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- particles
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Abstract
The utility model discloses a particle detection module and air quality detection device, including the shell, this shell includes the first casing and the second casing of mutual lock, still including setting up air inlet and the air outlet on the shell, printed circuit board divides particle detection module's inner space into upper space and lower floor space, the wind channel, at least including be located upper space and be close to air inlet first upper wind channel, be located the lower floor wind channel in lower floor space and be located upper space and be close to the second upper strata wind channel of air outlet, laser lamp -house for air to the wind channel of flowing through carries out laser irradiation, optical sensor sets up in the lower floor wind channel for scattered light that the detection was produced by the laser irradiation air is the signal of telecommunication with light signal conversion, the fan sets up and inclines at the air outlet for with air suction and this particle detection module that discharges, control module for the particle concentration by mass who detects in the air is handled to the signal of telecommunication to optical sensor sends.
Description
Technical field
This utility model is related to air particles detection and in particular to a kind of detection of particles module and Detection of Air Quality fill
Put.
Background technology
With China's industrialization and urbanization fast development, gross contamination emission sustainable growth, environmental problem is increasingly convex
Aobvious, the heavily contaminated weather especially with particulate matter as primary pollutant takes place frequently.Therefore, market occurs in that much to air particles
The device being detected.
The existing device that air particles are detected, after air enters air channel from air intake, in LASER Light Source
Under the laser sending irradiates, air particles produce scattered light, and scattered light is irradiated on optical pickocff, and last air is in fan
Device for detecting particles is discharged from air outlet slit under effect.Examine because air channel, LASER Light Source, optical pickocff and fan are located at particle
Survey the same plane of device, and need to meet the flow direction of LASER Light Source direction of illumination air in air channel, simultaneously
Need to leave enough spaces for air channel, therefore lead to existing device for detecting particles be sized for very big it has not been convenient to user
Installed and utilized this air particles detection means to make new product.
Utility model content
In view of this, this utility model provides a kind of detection of particles module and air quality detecting device, compact,
Fast response time, accuracy of detection are high, can draw in the air mass particle concentration in real time.
On the one hand, this utility model provides a kind of detection of particles module, and including shell, this shell includes mutually fastening
First housing and the second housing, also include：
Air intake；
Air outlet slit；
Printed circuit board (PCB), setting on the second housing, by the inner space of detection of particles module be divided into upper sheaf space and
Lower layer space；
Air channel, is circulation passage after air intake entrance for the air, this air channel at least includes positioned at upper sheaf space and leans on
First upper strata air channel of nearly air intake, it is located at the lower floor air channel of lower layer space and is located at upper sheaf space and near air outlet slit
The second upper strata air channel；
LASER Light Source, for carrying out laser irradiation to the air flowing through air channel；
Optical pickocff, is arranged in lower floor air channel, irradiates, by laser, the scattered light that air produces for detection, and by light
Signal is converted to the signal of telecommunication；
Fan, is arranged on air outlet slit side, is used for drawing air into and discharge this detection of particles module；
Control module, for being processed to the signal of telecommunication that optical pickocff sends detect the mass particle of in the air
Concentration.
Further, air intake and air outlet slit are arranged on the same side of shell.
Further, the first opening and near air outlet slit second that printed circuit board (PCB) is included near air intake is opened
Mouthful.
Further, the first opening is that air enters the passage in lower floor air channel from the first upper strata air channel, and the second opening is sky
Gas enters the passage in the second upper strata air channel from lower floor air channel.
Further, fan is arranged at the second opening.
Further, LASER Light Source, optical pickocff and fan are fixing on a printed circuit by support, wherein, swash
Radiant and optical pickocff are located at the side towards lower layer space for the printed circuit board (PCB), and fan is located at printed circuit board (PCB) towards upper strata
The side in space.
Further, also include the screen layer that is arranged on shell.
Further, screen layer is shielding gummed paper, and this shielding gummed paper is electrically connected by the earth terminal of Copper Foil and printed circuit board (PCB)
Connect.
Further, also include the data-interface on shell.
Second aspect, this utility model provides a kind of air quality detecting device, including the particle described in first aspect
Detection module.
Detection of particles module and air quality detecting device that this utility model provides, the inside of detection of particles module is empty
Between be divided into sheaf space and lower layer space, air channel is set to positioned at upper sheaf space and the first upper strata wind near air intake
Road, be located at lower layer space lower floor air channel and be located at upper sheaf space and near air outlet slit the second upper strata air channel, simultaneously will
LASER Light Source and optical pickocff are arranged on lower layer space, and fan is arranged on upper sheaf space.Thus reducing detection of particles mould
The volume of block, facilitates user to be installed and carries out secondary development using this detection of particles module, have simultaneously accuracy of detection high,
The output data advantage little, that in the air mass particle concentration can be drawn quickly, in real time of fluctuation.
Brief description
Accompanying drawing is used for embodiment of the present utility model is further described together with word description.Wherein：
Fig. 1 is the axonometric chart of the detection of particles module that this utility model embodiment provides.
Fig. 2 is the exploded view of the A-A1 line incision along Fig. 1, shows the internal junction of the upper sheaf space of detection of particles module
Structure.
Fig. 3 is the exploded view of the A-A1 line incision along Fig. 1, shows the internal junction of the lower layer space of detection of particles module
Structure.
Fig. 4 is the air channel schematic diagram of the detection of particles module that this utility model embodiment provides.
Fig. 5 is the circuit structure diagram of the detection of particles module that this utility model embodiment provides.
Specific embodiment
Describe embodiment of the present utility model below in conjunction with the accompanying drawings in detail.In all of the figs, identical label represents phase
Same element, and omit its repeat specification.
This utility model embodiment provide detection of particles module and air quality detecting device, can in the air
The mass concentration of grain thing carries out quick, real-time detection, and this particulate matter can include fine particle and coarseparticulate, wherein, carefully
Particulate matter（PM1.0、PM2.5）Refer to the particulate matter of in the air equivalent aerodynamic diameter≤2.5 μm, coarseparticulate refers to sky
Particulate matter in 2.5～10 μ m for the aerodynamics equivalent diameter.This utility model employ laser irradiate in the air
Grain thing, come the technology being detected, is irradiated to the granule of in the air by laser, using high-accuracy optical pickocff energy
The information such as the particle diameter of particle, intensity of light reflection are detected, reaches the letter such as high accuracy trapped particle kinestate, volume, quality
Breath, has the advantages such as small volume, high precision, fast response time, real-time be good, simple to operate.
In this utility model, the gaseous exchange system being formed by air intake, air outlet slit and fan makes outside air
Air channel is passed through with even speed.It is provided with high-precision optical sensor to obtain the intensity of light reflection information of particle in air channel.According to anti-
Intensity information can determine the particle diameter of particle.
The inner space of detection of particles module is divided into upper sheaf space and lower layer space, air channel is set to positioned at upper strata
The first upper strata air channel in space and the second upper strata air channel, and it is located at the lower floor air channel of lower layer space, make the velocity vector of particle
Negatively correlated with quality, the speed that is, the bigger particle of quality moves in atmosphere is slower, so claiming inverse relation to bear relation.From
And mass particle information is obtained by velocity vector.
Meanwhile, the number of particles flowing through in the unit interval being recorded by optical pickocff, Principle of Statistics in addition, then
Calculate the satisfactory mass particle of particle diameter.
Optical pickocff converts optical signals into the signal of telecommunication, and the signal of telecommunication is sent to control module, and control module is processed
The received signal of telecommunication simultaneously to control LASER Light Source and rotation speed of the fan accordingly.
Because overall ventilation is related to air channel, it is known conditions, so in the air particle of interest can be obtained in real time
Mass concentration.
The detection of particles module of this utility model embodiment offer to be provided in detail with reference to Fig. 1 to Fig. 5.
Fig. 1 is the axonometric chart of the detection of particles module that this utility model embodiment provides, as shown in Figure 1.This detection of particles
Module includes shell, and this shell includes the first housing 1 mutually fastening and the second housing 2, and detection of particles module also includes shielding
Layer 3, data-interface 4, retainer ring 5, air intake 6 and air outlet slit 7.
First housing 1 and the second housing 2 snap together the shell forming detection of particles module, and the material of this shell is permissible
For plastics.It should be noted that in this utility model embodiment, the first housing 1 can be the upper shell of shell, the second housing
2 is the lower house of shell, or, the first housing 1 can be the lower house of shell, and the second housing 2 is the upper shell of shell, this reality
With new, this is not limited.For convenience, this utility model embodiment is all with the first housing 1 as upper shell, second shell
Body 2 illustrates for as a example lower house.
Screen layer 3 is shielding gummed paper, and this shielding gummed paper can be copper foils for shielding gummed paper, is provided with the one side of Copper Foil
Substrate, arranges sticking glue on the another side of Copper Foil, thus shielding gummed paper is attached on the shell of detection of particles module.Should
Shielding gummed paper is electrically connected with the earth terminal of printed circuit board (PCB) by Copper Foil, makes shielding gummed paper play shielding action.
Data-interface 4 is, for example, 4PIN interface, is the port of data transfer, and user can connect this 4PIN by corresponding winding displacement
Interface, receives the detection numerical value of the detection of particles module that this utility model embodiment provides, and is shown as needed or control
System.Described shell is provided with opening in position, for exposing the 4PIN connector of the printed substrate 9 of circuit part,
So that this detection of particles module can connect printed substrate by winding displacement, realize power supply and detection data exchanges.
Retainer ring 5 is used for the both sides fixed this detection of particles module and be preferably arranged on shell in a symmetrical.
Air intake 6 and air outlet slit 7 are arranged on the same side of shell or are arranged on the opposite side of shell.In this reality
With, in new embodiment, all taking the same side that air intake 6 and air outlet slit 7 are arranged on shell as a example illustrating.
Fig. 2 is the exploded view of the A-A1 line incision along Fig. 1, shows the internal junction of the upper sheaf space of detection of particles module
Structure, as shown in Figure 2.Printed circuit board (PCB) 9 is fixedly installed in the support member of lower house 2, and upper shell 1 and lower house 2 are constituted
Inner space be divided into sheaf space and lower layer space.
Fan 8, LASER Light Source 12, optical pickocff 13 and control module are provided with printed circuit board (PCB) 9（Not shown）.Tool
Body ground, printed circuit board (PCB) 9 by support 11, fan 8 and LASER Light Source 12 is fixed on printed circuit board (PCB) 9, and support 11 can be
Plastic stent, fan 8 can be screwed, the leading portion of LASER Light Source 12 can by way of button bit, three of its back segment draw
Foot can be fixed on printed circuit board (PCB) 9 by way of welding, so that position in detection of particles module for the LASER Light Source 12 is not
Become and will not rock, and with optical pickocff 13 on a vertical line.It is empty towards upper strata that fan 8 is located at printed circuit board (PCB) 9
Between side, LASER Light Source 12 and optical pickocff 13 are located at the side towards lower layer space for the printed circuit board (PCB) 9.Photoelectric sensor
13rd, the part-structure of LASER Light Source 12 and support 11 constitutes the laser system of detection of particles module, enables laser spot just
It is in the center of photoelectric sensor 13, photosensitive effect reaches most preferably.
The first opening 10 near air intake 6 and near air outlet slit 7 second is additionally provided with printed circuit board (PCB) 9 open
Mouth 14, the first opening 10 is that air enters the passage in lower floor air channel from the first upper strata air channel, and the second opening 14 is air from lower floor
Air channel is drawn to the passage in the second upper strata air channel.Fan 8 is located at the second opening 14.
Specifically, as shown in figure 4, Fig. 4 is the air channel schematic diagram of the detection of particles module that this utility model embodiment provides.
Fan 8 passes through air outlet slit 7 outwardly exchange of air, produces negative pressure in work process, there is provided whole detection of particles module
Gas circulation power.Under Action of Wind pressure, air enters detection of particles module from air intake 6 in the direction of arrows, afterwards from the
One upper strata air channel flows to lower floor air channel after the first opening 10, and now, air is in and is made up of lower house 2 and printed circuit board (PCB) 9
Area of space, through positioned at the optical pickocff 13 in lower floor air channel and after the laser that sent by LASER Light Source 12 irradiates,
Flow to the second upper strata air channel after the second opening 14 in the presence of fan 8, eventually pass air outlet slit and discharge this detection of particles mould
Block, forms primary air circulation.
Preferably, it is provided with reinforcement in lower house 2 towards the side of upper shell 1 and near the side of the first opening 10
15, block, to play, the effect diffusing, it is to avoid detection of particles inside modules occur light pollution.
The below circuit structure of the detection of particles module that explanation this utility model embodiment provides.Fig. 5 is this utility model
The composition schematic diagram of the circuit structure of detection of particles module that embodiment provides.As shown in figure 5, this circuit structure preferably includes to supply
Electric module, blower module, testing circuit module, laser module and control module（CPU）, said structure is formed at printed wire
On plate 9.Wherein supply module includes connecting the structure of external power source and necessary blood pressure lowering chip etc..Blower module refers to for for wind
Fan 8 provides the part driving and according to CPU, rotation speed of the fan being adjusted.Testing circuit module include optical pickocff 13 and
Subsidiary signal processing circuit, can provide for optical pickocff 13 and drive, and the optical signal that optical pickocff 13 is received turns
It is changed to the signal of telecommunication.Laser module refers to provide, for LASER Light Source, the part driving and/or controlling.
External power source is whole detection of particles module for power supply by above-mentioned 4PIN interface, and supply voltage is in detection of particles module
In be divided into two-way, a road supply voltage is reduced to 3.3V via blood pressure lowering chip, is testing circuit module, control module（CPU）With
Laser module is powered；Another road supply voltage keeps external power source 5V constant, powers directly to blower module；Testing circuit module
The optical signal that optical pickocff 13 is received is converted into the signal of telecommunication and is sent to control module（CPU）.Control module（CPU）Control
Laser module, so that LASER Light Source sends light beam.In addition, control module（CPU）Control fan adjustment rotating speed, keep air-flow
Stable.
Preferably, the detection of particles module that this utility model embodiment provides may also include communication module（Not shown）, should
Communication module is electrically connected with foregoing circuit structure, and the mass concentration data is activation of the granule for exporting described circuit structure arrives
External equipment, this external equipment can be single-chip microcomputer or computer etc., detection of particles module can be examined by single-chip microcomputer or computer
The mass concentration of the granule surveyed is processed or is shown.This communication module can be wireless communication module, for example：Bluetooth
Module or Wifi module etc..
This utility model embodiment additionally provides a kind of air quality detecting device, and this air quality detecting device includes
The detection of particles module of embodiment offer is provided.Preferably, this detection of air quality module may also include formaldehyde sensor, an oxidation
Carbon sensor, Temperature Humidity Sensor etc..
Air quality detecting device described above is simultaneously not provided with data display or tip parts and its function, and it can lead to
Cross serial ports and transfer data to display or control terminal.It should be noted, however, that filling in this Detection of Air Quality as needed
Put configuration display element and corresponding control circuit, be also that those skilled in the art easily realizes as needed, this
The above example of utility model does not define to this.
The foregoing describe according to detection of particles module described in the utility model and air quality detecting device, there is volume
Compact, compact conformation, disclosure satisfy that the different demands of user, greatly facilitates and makes on the basis of this detection of particles module
New product, will this utility model provide detection of particles module and other sensors（Formaldehyde sensor, temperature and humidity sensing
Device, carbon monoxide transducer etc.）It is installed together, forms air quality detecting device, there is accuracy of detection height, output number simultaneously
Advantage that little, real-time is good, simple to operate etc. according to fluctuating.
Above in association with specific embodiment, the purpose of this utility model, technical scheme and beneficial effect are carried out further
Describe in detail.It should be understood that above describe specific embodiment of the present utility model merely for the sake of the purpose illustrating, and
It is not meant to limit this utility model.All any modifications made within spirit of the present utility model and principle, equivalent, change
Enter, should be included within protection domain of the present utility model.
Claims (10)
1. a kind of detection of particles module, including shell, this shell includes the first housing mutually fastening and the second housing, its feature
It is, also include：
Air intake；
Air outlet slit；
Printed circuit board (PCB), setting on the second housing, the inner space of detection of particles module is divided into upper sheaf space and lower floor
Space；
Air channel, is circulation passage after air intake entrance for the air, this air channel is at least included positioned at upper sheaf space and near empty
First upper strata air channel of gas entrance, it is located at the lower floor air channel of lower layer space and is located at upper sheaf space and near air outlet slit the
Two upper stratas air channel；
LASER Light Source, for carrying out laser irradiation to the air flowing through air channel；
Optical pickocff, is arranged in lower floor air channel, irradiates, by laser, the scattered light that air produces for detection, and by optical signal
Be converted to the signal of telecommunication；
Fan, is arranged on air outlet slit side, is used for drawing air into and discharge this detection of particles module；
Control module, for being processed to the signal of telecommunication that optical pickocff sends detect that the mass particle of in the air is dense
Degree.
2. detection of particles module according to claim 1 is it is characterised in that air intake and air outlet slit are arranged on shell
Same side.
3. detection of particles module according to claim 1 and 2 is it is characterised in that printed circuit board (PCB) includes entering near air
First opening of mouth and the second opening near air outlet slit.
4. detection of particles module according to claim 3 is it is characterised in that the first opening is air from the first upper strata air channel
Enter the passage in lower floor air channel, the second opening is that air enters the passage in the second upper strata air channel from lower floor air channel.
5. detection of particles module according to claim 4 is it is characterised in that fan is arranged at the second opening.
6. detection of particles module according to claim 1 and 2 is it is characterised in that LASER Light Source, optical pickocff and fan
Fixing on a printed circuit by support, wherein, LASER Light Source and optical pickocff are located at printed circuit board (PCB) towards lower floor's sky
Between side, fan be located at the side towards upper sheaf space for the printed circuit board (PCB).
7. detection of particles module according to claim 1 and 2 is it is characterised in that also include the shielding being arranged on shell
Layer.
8. detection of particles module according to claim 7 is it is characterised in that screen layer is to shield gummed paper, this shielding gummed paper
Electrically connected with the earth terminal of printed circuit board (PCB) by Copper Foil.
9. detection of particles module according to claim 1 is it is characterised in that also include the data-interface on shell.
10. a kind of air quality detecting device is it is characterised in that include the detection of particles described in claim 1-9 any one
Module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620816447.0U CN205941284U (en) | 2016-08-01 | 2016-08-01 | Particle detection module and air quality detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620816447.0U CN205941284U (en) | 2016-08-01 | 2016-08-01 | Particle detection module and air quality detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205941284U true CN205941284U (en) | 2017-02-08 |
Family
ID=57924728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620816447.0U Active CN205941284U (en) | 2016-08-01 | 2016-08-01 | Particle detection module and air quality detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205941284U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036481A (en) * | 2017-12-08 | 2018-05-15 | 武汉四方光电科技有限公司 | A kind of air quality detecting device and the vehicles |
| CN110132810A (en) * | 2019-05-09 | 2019-08-16 | 新立科技股份有限公司 | A kind of PM2.5 concentration detection method and its detection device |
| CN110884317A (en) * | 2019-05-31 | 2020-03-17 | 江苏日盈电子股份有限公司 | Air quality detection device and application thereof |
| CN110884317B (en) * | 2019-05-31 | 2024-05-24 | 江苏日盈电子股份有限公司 | Air quality detection device and application thereof |
-
2016
- 2016-08-01 CN CN201620816447.0U patent/CN205941284U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036481A (en) * | 2017-12-08 | 2018-05-15 | 武汉四方光电科技有限公司 | A kind of air quality detecting device and the vehicles |
| CN110132810A (en) * | 2019-05-09 | 2019-08-16 | 新立科技股份有限公司 | A kind of PM2.5 concentration detection method and its detection device |
| CN110884317A (en) * | 2019-05-31 | 2020-03-17 | 江苏日盈电子股份有限公司 | Air quality detection device and application thereof |
| CN110884317B (en) * | 2019-05-31 | 2024-05-24 | 江苏日盈电子股份有限公司 | Air quality detection device and application thereof |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210325 Address after: 100193, No. 5, building 8, No. three northeast Wang Xi Road, Beijing, Haidian District Patentee after: HANWANG TECHNOLOGY Co.,Ltd. Address before: 100193 room 322, 3 / F, building 5, 8 dongbeiwangxi Road, Haidian District, Beijing Patentee before: BEIJING HANWANG BLUE SKY TECHNOLOGY Co.,Ltd. |