CN208488363U - PM2.5 dust sensor - Google Patents
PM2.5 dust sensor Download PDFInfo
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- CN208488363U CN208488363U CN201821213365.2U CN201821213365U CN208488363U CN 208488363 U CN208488363 U CN 208488363U CN 201821213365 U CN201821213365 U CN 201821213365U CN 208488363 U CN208488363 U CN 208488363U
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- venthole
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- transmitting set
- shell
- optical transmitting
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Abstract
The utility model provides a kind of PM2.5 dust sensor, it includes shell, processor, the first optical transmitting set, the first optical receiver, the second optical transmitting set and the second optical receiver, third optical transmitting set and third optical receiver, main venthole, the first secondary venthole and the second secondary venthole are wherein provided in shell, main venthole penetrates through shell, first secondary venthole and the second secondary venthole are used to connection housing cavity and outside, and every group of optical transmitting set and optical receiver detect the air in the axially extending region of corresponding venthole respectively.The main venthole, the first secondary venthole and the second secondary venthole that the PM2.5 dust sensor of the utility model passes through setting connection, so that airintake direction is various, dust detection is carried out by the air in the axially extending region respectively to main venthole, the first secondary venthole and the second secondary venthole simultaneously, finally detection data is handled by processor, so as to obtain more accurate dust data.
Description
Technical field
The utility model relates to dust sensor field, in particular to a kind of high-precision PM2.5 dust sensor.
Background technique
Dust sensor is to utilize particle for perceiving the dust in air and detecting a kind of device of dust concentration
The scattering phenomenon of light can be generated under the irradiation of light with molecule so that when optical transmitting set a branch of collimated monochromatic ligth is incident on it is tested
When particle field, optical receiver can receive scattering light, while be influenced by scattering and absorbing around particle, and light intensity will be declined
Subtract, the size of light intensity is directly proportional with the electric signal power through photoelectric conversion, can be in the hope of relative attenuation by measuring electric signal
Rate, and the size of relative attenuation rate substantially can linear response field dust to be measured relative concentration；
A venthole is generally only arranged in dust sensor in the prior art, and after dust sensor fixed installation, leads to
The direction of stomata is substantially fixed, and the angular relationship in the flow direction of air and the direction of venthole comes and go, so that
Changeable air has certain deviation in air and ambient enviroment in venthole, while only with the precision of one group of detection data
It is lower, so that the practical dust concentration in the dust concentration and ambient air measured has certain deviation.
Therefore need to provide a kind of PM2.5 dust sensor to solve above-mentioned technical problem.
Utility model content
The utility model provides a kind of PM2.5 dust sensor, passes through the main venthole of setting connection, the first secondary ventilation
Hole and the second secondary venthole, while passing through the axial direction respectively to main venthole, the first secondary venthole and the second secondary venthole
Air in elongated area carries out dust detection, with solve dust sensor in the prior art be only arranged a venthole and
The problem for causing detection accuracy lower only with one group of detection data.
In order to solve the above technical problems, the technical solution of the utility model are as follows: a kind of PM2.5 dust sensor comprising:
Shell, is provided with main venthole and the first secondary venthole on the housing, and the main venthole penetrates through the shell
Body, the described first secondary venthole are located at the side of the shell for being connected to the housing cavity and outside；
Processor is arranged in the shell；
First optical transmitting set is arranged intracorporal one jiao in the shell；
First optical receiver is arranged in the shell, is in three with first optical transmitting set and the main venthole
Angle Position structure is electrically connected with the processor, the transmitting optical path of first optical transmitting set and first optical receiver
Receiving light path be crossed to form the first ecotone, first ecotone is located in the axially extending region of the main venthole,
So that the dust that the transmitting illumination of first optical transmitting set is mapped in the axially extending region of the main venthole is formed
Scattering luminous energy received by first optical receiver；
Second optical transmitting set is arranged in the shell, it is intracorporal same to be located at the shell with first optical transmitting set
Angle；
Second optical receiver is arranged in the shell, with second optical transmitting set and the first secondary venthole
It in angular position structure, is electrically connected with the processor, the transmitting optical path of second optical transmitting set connects with second light
The receiving light path for receiving device is crossed to form the second ecotone, and second ecotone is located at the axially extending of the described first secondary venthole
In region, so that the transmitting illumination of second optical transmitting set is mapped in the axially extending region of the described first secondary venthole
Dust is formed by scattering luminous energy and is received by second optical receiver.
In the present invention, using the one side of the shell maximum area as top surface or bottom surface, the axis of the main venthole
Be to direction it is vertical, the axial direction of the first secondary venthole is laterally.
In the present invention, first optical transmitting set and second optical transmitting set are connected as by the first connector
One.
In the present invention, it is additionally provided with the second secondary venthole, the described second secondary venthole and institute on the housing
State the two sides that the first secondary venthole is located at the main venthole；
The PM2.5 dust sensor further includes third optical transmitting set and third optical receiver, the third optical transmitting set
It is arranged in the shell and is located at the intracorporal same angle of the shell with first optical receiver, the third optical receiver is set
It sets in the shell and with the third optical transmitting set, the second secondary venthole in angular position structure, with the processing
Device is electrically connected；
The receiving light path of the transmitting optical path of the third optical transmitting set and the third optical receiver is crossed to form third friendship
Wrong area, the third ecotone is located in the axially extending region of the described second secondary venthole, so that the third light emitting
It is described that the dust that the transmitting illumination of device is mapped in the axially extending region of the described second secondary venthole is formed by scattering luminous energy
Third optical receiver receives.
Wherein, the described second secondary venthole is consistent with the described first secondary axial direction of venthole.
In addition, first optical receiver and the third optical transmitting set are connected as one by the second connector.
Further, the aperture of the described first secondary venthole is equal to the aperture of the described second secondary venthole, the main ventilation
The aperture in hole is greater than the aperture of the described first secondary venthole.
In the present invention, the shell includes lower casing and upper cover, is provided in the lower casing multiple with described the
One optical transmitting set, first optical receiver, first optical transmitting set and first optical receiver are solid correspondingly
Determine slot, when the upper cover is fixedly connected with the lower casing, the upper cover is by first optical transmitting set, first light-receiving
Device, first optical transmitting set and the first optical receiver pressing are in corresponding fixing groove.
In the present invention, one jiao in the shell maximum shell surface is provided with for the processor and external electricity
The connection terminal that source is electrically connected.
The utility model compared to the prior art, it has the advantage that: the PM2.5 dust sensor of the utility model passes through
The main venthole, the first secondary venthole and the second secondary venthole of connection are set, so that airintake direction is various, while passing through difference
Dust detection is carried out to the air in the axially extending region of main venthole, the first secondary venthole and the second secondary venthole, most
Detection data is handled by processor afterwards, so as to obtain more accurate dust data.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below in embodiment
Required attached drawing is briefly described, and the accompanying drawings in the following description is only that the section Example of the utility model is corresponding
Attached drawing.
Fig. 1 is the structural schematic diagram of the preferred embodiment of the PM2.5 dust sensor of the utility model.
Fig. 2 is the main view of the PM2.5 dust sensor of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those skilled in the art are obtained without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
A venthole is generally only arranged in dust sensor in the prior art, and after dust sensor fixed installation, leads to
The direction of stomata is substantially fixed, and the angular relationship in the flow direction of air and the direction of venthole comes and go, so that
Changeable air has certain deviation in air and ambient enviroment in venthole, while only with the precision of one group of detection data
It is lower, so that the practical dust concentration in the dust concentration and ambient air measured has certain deviation.
It the following is a kind of preferred reality of PM2.5 dust sensor that can solve the above technical problem provided by the utility model
Apply example.
Fig. 1 is please referred to, wherein Fig. 1 is the structural representation of the preferred embodiment of the PM2.5 dust sensor of the utility model
Figure.
The similar unit of structure is to be given the same reference numerals in the figure.
The preferred embodiment of PM2.5 dust sensor provided by the utility model are as follows: a kind of PM2.5 dust sensor,
It is connect including shell 11, processor 12, the first optical transmitting set 16, the first optical receiver 17, the second optical transmitting set 18 and the second light
Receive device 19, third optical transmitting set 1A and third optical receiver 1B.
Wherein, the secondary venthole 14 of main venthole 13, first and the second secondary venthole 15 are provided on shell 11, it is main logical
Stomata 13 penetrates through shell 11, and the first secondary venthole 14 is located at the two sides of shell 11 for being connected to the second secondary venthole 15
11 inner cavity of shell and outside；
Processor 12 is arranged in shell 11；
First optical transmitting set 16 is arranged in one jiao in shell 11；
First optical receiver 17 is arranged in shell 11, is in angular position with the first optical transmitting set 16 and main venthole 13
Structure is electrically connected, the receiving light path phase of the transmitting optical path of the first optical transmitting set 16 and the first optical receiver 17 with processor 12
It hands over and forms the first ecotone, the first ecotone is located in the axially extending region of main venthole 13, so that the first optical transmitting set
The dust that 16 transmitting illumination is mapped in the axially extending region of main venthole 13 is formed by scattering luminous energy by the first light-receiving
Device 17 receives；
Second optical transmitting set 18 is arranged in shell 11, is located at the same angle in shell 11 with the first optical transmitting set 16；
Second optical receiver 19 is arranged in shell 11, is in triangle with the second optical transmitting set 18 and the first secondary venthole 14
Positional structure is electrically connected, the reception light of the transmitting optical path of the second optical transmitting set 18 and the second optical receiver 19 with processor 12
Road is crossed to form the second ecotone, and the second ecotone is located in the axially extending region of the first secondary venthole 14, so that second
The dust that the transmitting illumination of optical transmitting set 18 is mapped in the axially extending region of the first secondary venthole 14 is formed by scattering luminous energy
It is received by the second optical receiver 19；
Third optical transmitting set 1A is arranged in shell 11 and is located at the same angle in shell 11 with the first optical receiver 17, the
Three optical receiver 1B are arranged in shell 11 and are in angular position structure with third optical transmitting set 1A, the second secondary venthole 15, with
Processor 12 is electrically connected；
The transmitting optical path of third optical transmitting set 1A and the receiving light path of third optical receiver 1B are crossed to form third ecotone,
Third ecotone is located in the axially extending region of the second secondary venthole 15, so that the transmitting light of third optical transmitting set 1A irradiates
Scattering luminous energy is formed by the dust in the axially extending region of the second secondary venthole 15 to be received by third optical receiver 1B.
The second secondary venthole 15 in this preferred embodiment is consistent with the first secondary axial direction of venthole 14.
In the preferred embodiment, using the one side of 11 maximum area of shell as top surface or bottom surface, the axial direction of main venthole 13
Direction be it is vertical, the axial direction of the first secondary venthole 14 is laterally.
Wherein, the first optical transmitting set 16 in this preferred embodiment and the second optical transmitting set 18 are connected by the first connector 1C
It is connected in one, the first optical receiver 17 and third optical transmitting set 1A are connected as one by the second connector 1D.
The connection of first optical transmitting set 16 and the second optical transmitting set 18, the first optical receiver 17 and third optical transmitting set 1A
Connection is able to achieve subsequent Fast Installation, and installation effectiveness is high, and makes compact-sized after installation, space utilization rate height
In addition, the aperture of the first secondary venthole 14 is equal to the aperture of the second secondary venthole 15, the aperture of main venthole 13 is big
In the aperture of the first secondary venthole 14.
The shell 11 of this preferred embodiment includes lower casing and upper cover, and multiple and the first optical transmitting set is provided in lower casing
16, the first optical receiver 17, the first optical transmitting set 16 and the one-to-one fixing groove of the first optical receiver 17, when upper cover is under
When shell is fixedly connected, upper cover is by the first optical transmitting set 16, the first optical receiver 17, the first optical transmitting set 16 and the first light-receiving
Fixed installation can be completed in corresponding fixing groove in 17 pressing of device.
Referring to figure 2., Fig. 2 is the main view of the PM2.5 dust sensor of the utility model.
In the preferred embodiment, one jiao in the maximum shell surface of shell 11 is provided with for processor 12 and external power supply
The connection terminal 121 of electric connection.
Working principle of the utility model is: air can be from the secondary venthole 14 of main venthole 13, first and the second secondary ventilation
Hole 15 is into or out, wherein the axially extending region of the first optical transmitting set 16 and the main venthole 13 of 17 pairs of the first optical receiver into
Row air detection, the second optical transmitting set 18 and the second optical receiver 19 carry out the axially extending region of the first secondary venthole 14 empty
Gas detection, third optical transmitting set 1A and third optical receiver 1B carry out air inspection to the axially extending region of the second secondary venthole 15
It surveys, finally detection data is handled by processor 12, so as to obtain more accurate dust data.
The detection process of the PM2.5 dust sensor of this preferred embodiment is completed in this way.
The PM2.5 dust sensor of this preferred embodiment by the main venthole of setting connection, the first secondary venthole and
Second secondary venthole, so that airintake direction is various, while by secondary logical to main venthole, the first secondary venthole and second respectively
Air in the axially extending region of stomata carries out dust detection, is finally handled by processor detection data, so as to
Obtain more accurate dust data.
Although above preferred embodiment is not used in conclusion the utility model is disclosed above with preferred embodiment
To limit the utility model, those skilled in the art can make without departing from the spirit and scope of the utility model
It is various to change and retouch, therefore the protection scope of the utility model subjects to the scope of the claims.
Claims (9)
1. a kind of PM2.5 dust sensor characterized by comprising
Shell, is provided with main venthole and the first secondary venthole on the housing, and the main venthole penetrates through the shell, institute
It states the first secondary venthole and is located at the side of the shell for being connected to the housing cavity and outside；
Processor is arranged in the shell；
First optical transmitting set is arranged intracorporal one jiao in the shell；
First optical receiver is arranged in the shell, is in triangle position with first optical transmitting set and the main venthole
Structure is set, is electrically connected with the processor, the transmitting optical path of first optical transmitting set and connecing for first optical receiver
It receives optical path and is crossed to form the first ecotone, first ecotone is located in the axially extending region of the main venthole, so that
First optical transmitting set the dust that is mapped in the axially extending region of the main venthole of transmitting illumination be formed by it is scattered
Luminous energy is penetrated to be received by first optical receiver；
Second optical transmitting set is arranged in the shell, is located at the intracorporal same angle of the shell with first optical transmitting set；
Second optical receiver is arranged in the shell, is in three with second optical transmitting set and the first secondary venthole
Angle Position structure is electrically connected with the processor, the transmitting optical path of second optical transmitting set and second optical receiver
Receiving light path be crossed to form the second ecotone, second ecotone is located at the axially extending region of the described first secondary venthole
It is interior, so that the transmitting illumination of second optical transmitting set is mapped to the dust in the axially extending region of the described first secondary venthole
Scattering luminous energy is formed by be received by second optical receiver.
2. PM2.5 dust sensor according to claim 1, which is characterized in that with the one side of the shell maximum area
For top surface or bottom surface, the axial direction of the main venthole be it is vertical, the axial direction of the described first secondary venthole is laterally.
3. PM2.5 dust sensor according to claim 1, which is characterized in that first optical transmitting set and described
Two optical transmitting sets are connected as one by the first connector.
4. PM2.5 dust sensor according to claim 1, which is characterized in that be additionally provided with second on the housing
Secondary venthole, the described second secondary venthole and the first secondary venthole are located at the two sides of the main venthole；
The PM2.5 dust sensor further includes third optical transmitting set and third optical receiver, the third optical transmitting set setting
It is located at the intracorporal same angle of the shell in the shell and with first optical receiver, the third optical receiver setting exists
It is in angular position structure in the shell and with the third optical transmitting set, the second secondary venthole, with the processor electricity
Property connection；
The receiving light path of the transmitting optical path of the third optical transmitting set and the third optical receiver is crossed to form third ecotone,
The third ecotone is located in the axially extending region of the described second secondary venthole, so that the hair of the third optical transmitting set
It penetrates the dust that illumination is mapped in the axially extending region of the described second secondary venthole and is formed by scattering luminous energy by the third light
Receiver receives.
5. PM2.5 dust sensor according to claim 4, which is characterized in that the second secondary venthole and described the
The axial direction of one secondary venthole is consistent.
6. PM2.5 dust sensor according to claim 4, which is characterized in that first optical receiver and described
Three optical transmitting sets are connected as one by the second connector.
7. PM2.5 dust sensor according to claim 4, which is characterized in that the aperture etc. of the described first secondary venthole
In the aperture of the described second secondary venthole, the aperture of the main venthole is greater than the aperture of the described first secondary venthole.
8. PM2.5 dust sensor according to claim 1, which is characterized in that the shell includes lower casing and upper cover,
Be provided in the lower casing it is multiple with first optical transmitting set, first optical receiver, first optical transmitting set and
The one-to-one fixing groove of first optical receiver, when the upper cover is fixedly connected with the lower casing, the upper cover is by institute
The first optical transmitting set, first optical receiver, first optical transmitting set and the first optical receiver pressing are stated right
In the fixing groove answered.
9. PM2.5 dust sensor according to claim 1, which is characterized in that one in the shell maximum shell surface
Angle is provided with the connection terminal being electrically connected for the processor and external power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821213365.2U CN208488363U (en) | 2018-07-27 | 2018-07-27 | PM2.5 dust sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821213365.2U CN208488363U (en) | 2018-07-27 | 2018-07-27 | PM2.5 dust sensor |
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| Publication Number | Publication Date |
|---|---|
| CN208488363U true CN208488363U (en) | 2019-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821213365.2U Active CN208488363U (en) | 2018-07-27 | 2018-07-27 | PM2.5 dust sensor |
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| Country | Link |
|---|---|
| CN (1) | CN208488363U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112649559A (en) * | 2019-10-09 | 2021-04-13 | 研能科技股份有限公司 | Gas detection module |
-
2018
- 2018-07-27 CN CN201821213365.2U patent/CN208488363U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112649559A (en) * | 2019-10-09 | 2021-04-13 | 研能科技股份有限公司 | Gas detection module |
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