CN209296528U - A kind of sensor of dust concentration detection device - Google Patents
A kind of sensor of dust concentration detection device Download PDFInfo
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- CN209296528U CN209296528U CN201822215788.4U CN201822215788U CN209296528U CN 209296528 U CN209296528 U CN 209296528U CN 201822215788 U CN201822215788 U CN 201822215788U CN 209296528 U CN209296528 U CN 209296528U
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- sense channel
- dust
- light
- dust concentration
- sensor
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Abstract
The utility model discloses a kind of sensor of dust concentration detection devices, including cabinet, it is mounted on the intracorporal sense channel of case, the sampling head being connected at sense channel upper end opening, the fan assembly for being mounted on sense channel bottom end, for capturing dust-contained airflow and sucking dust-contained airflow in sense channel, dust-contained airflow distinguished and admirable is uniformly introduced in sense channel the sampling head by the fan assembly for providing to stablize；It further include laser generator, attenuator, light-receiving member and main circuit board, the laser generator can issue in laser beam to the sense channel, the attenuator is for absorbing the laser beam being emitted on sense channel inner wall, the light-receiving member is used to receive the reflected light of dust granule in the sense channel in dust-contained airflow and carries out that optical signal transmission to main circuit board is calculated dust concentration value by inside chip and software by the main circuit board after signal processing.By the above-mentioned means, the utility model can be improved detection accuracy.
Description
Technical field
The utility model relates to dust concentration testing equipment fields, detect and fill more particularly to a kind of sensor of dust concentration
It sets.
Background technique
Existing sensor of dust concentration detects dust concentration using light scattering method principle, and sense channel is detected using horizontal
Section is detected as sensor in channel.It is logical in detection due to Dust Characteristics when horizontal sense channel detects dust concentration for a long time
Dust can be accumulated on road tube wall, when dust reach a certain height, the light source in pipeline can also generate when shining on accumulation dust
Reflected light influences the precision of sensor detection dust concentration.
Utility model content
The utility model is mainly solving the technical problems that provide a kind of sensor of dust concentration detection device, using vertical
Formula sense channel falls the dust detected in section vertically, reduces the delay of dust, and attenuator is added in sense channel,
It avoids laser beam and is emitted on sense channel wall and generate reflective influence detection accuracy.
In order to solve the above technical problems, the technical solution that the utility model uses is: providing a kind of dust concentration biography
Sensor detection device, comprising: cabinet is mounted on the intracorporal sense channel of case, the sampling being connected at sense channel upper end opening
Head, the fan assembly for being mounted on sense channel bottom end, the sampling head are examined for capturing dust-contained airflow and sucking dust-contained airflow
It surveys in channel, dust-contained airflow distinguished and admirable is uniformly introduced in sense channel by the fan assembly for providing to stablize；
The sensor of dust concentration detection device further include: laser generator, attenuator, light-receiving member and main line
Plate, the laser generator and attenuator relative to the sense channel it is substantially symmetrical about its central axis be mounted on the sense channel before
Afterwards on the tube wall of two sides, the laser generator, which is capable of fixing, to be issued in 650nm point-like laser light beam to the sense channel, described
For attenuator for absorbing the laser beam being emitted on sense channel inner wall, the light-receiving member is mounted on the laser generator
On the sense channel tube wall among attenuator, the light-receiving member is for receiving in the sense channel in dust-contained airflow
The reflected light of dust granule and to reflected light carry out signal processing after by optical signal transmission to main circuit board, by the main circuit board
Dust concentration value is calculated by inside chip and software.
In one preferred embodiment of the utility model, the light-receiving member include convex lens in the shielding case and
The reflected light received is concentrated into a spot beam, is connect by the optical signal by optical signal receiving circuit plate, the convex lens
It receives board receiver and handles optical signal, convert optical signals into electric signal and amplify, the shielding case forms signal shielding, keeps away
Exempt from the peripheral interference of electromagnetic field.
In one preferred embodiment of the utility model, the fan assembly includes hollow-cup motor and blower, the sky
Heart cup motor is connect with external power supply, distinguished and admirable for driving blower rotation offer to stablize.
In one preferred embodiment of the utility model, offer air outlet below the cabinet, the air outlet with
The lower end of sense channel is connected to.
In one preferred embodiment of the utility model, the cabinet wall circumferential edge, which presses, sealing leather strap.
The beneficial effects of the utility model are: the utility model uses rectilinear sense channel, avoid in sense channel
Dust is detained, and attenuator is added in sense channel, avoid laser beam be emitted on sense channel inner wall generate it is reflective
Influence detection illuminance.The utility model is innovated by above structure, can be improved the detection accuracy of sensor.
Detailed description of the invention
Fig. 1 is a kind of main sectional view of sensor of dust concentration detection device of the utility model；
Fig. 2 is the left section view of sensor of dust concentration detection device shown in FIG. 1；
The components in the drawings are labeled as follows: 1, cabinet, 11, air outlet, 12, sealing leather strap, 2, sense channel, 3, sampling
Head, 4, fan assembly, 41, hollow-cup motor, 42, blower, 5, laser generator, 6, attenuator, 7, light-receiving member, 71, convex
Lens, 72, optical signal receiving circuit plate, 73, shielding case, 8, main circuit board.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear
Define.
Fig. 1, Fig. 2 are please referred to, the utility model embodiment includes:
A kind of sensor of dust concentration detection device, comprising: cabinet 1, is connected to the sense channel 2 being mounted in cabinet 1
Sampling head 3 at 2 upper end opening of sense channel, the fan assembly 4 for being mounted on 2 bottom end of sense channel, the sampling head 3 is for catching
It catches dust-contained airflow and sucks dust-contained airflow in sense channel 2, the fan assembly 4 is stablized distinguished and admirable by dust-contained airflow for offer
It is uniformly introduced in sense channel 2；
The sensor of dust concentration detection device further include: laser generator 5, attenuator 6, light-receiving member 7 and master
Wiring board 8, the laser generator 5 are mounted on the detection relative to the substantially symmetrical about its central axis of the sense channel 2 with attenuator 6
On the front and rear sides tube wall in channel 2, the laser generator 5, which is capable of fixing, issues 650nm point-like laser light beam to the detection
In channel 2, the attenuator 6 is installed for absorbing the laser beam being emitted on 2 inner wall of sense channel, the light-receiving member 7
On the tube wall of sense channel 2 among the laser generator 5 with attenuator 6, the light-receiving member 7 is described for receiving
The reflected light of dust granule in sense channel 2 in dust-contained airflow and to reflected light carry out signal processing after by optical signal transmission extremely
Main circuit board 8 calculates dust concentration value by inside chip and software by the main circuit board 8.
Wherein, the light-receiving member 7 includes the convex lens 71 and optical signal receiving circuit plate 72 in shielding case 73,
The reflected light received is concentrated into a spot beam by the convex lens 71, is received simultaneously by the optical signal receiving circuit plate 72
Optical signal is handled, electric signal is converted optical signals into and amplifies, the shielding case 73 forms signal shielding, avoids peripheral electromagnetic field
Interference.
The fan assembly 4 includes hollow-cup motor 41 and blower 42, and the hollow-cup motor 41 is connect with external power supply,
It is distinguished and admirable for driving the rotation offer of blower 42 to stablize.
The lower section of the cabinet 1 offers air outlet 11, and the air outlet 11 is connected to the lower end of sense channel 2, is used for
Dust-contained airflow is drawn into sense channel 2.
In the present embodiment, the 1 inner wall circumferential edge of cabinet, which presses, sealing leather strap 12, whole for improving cabinet 1
Dustproof and waterproof grade, improve its service life.
The concrete operating principle of the utility model sensor of dust concentration detection device are as follows:
External dc voltage is powered to main circuit board 8, and main circuit board 8 supplies electricity to fan assembly 4, and fan assembly 4 is to detection
Channel 2, which provides, stablizes distinguished and admirable, and sampling head 3 captures dust-contained airflow and simultaneously sucks dust-contained airflow in sense channel 2, while stablizing distinguished and admirable
Dust-contained airflow is uniformly introduced the detection section in sense channel 2, the laser generator 5 being mounted on 2 tube wall of sense channel
Fixed to issue 650nm point-like laser light beam, main body (dust particles in dust-contained airflow) is irradiated to and disappears laser beam after testing
It on light device 6, is all absorbed by attenuator, avoids generating the laser illuminance in reflected light influence sense channel 2, while laser light
Beam is irradiated to the reflected light generated in detection main body (dust particles in dust-contained airflow) and is absorbed by light-receiving member 7, light-receiving
The reflected light received is concentrated into a spot beam by the convex lens 71 in component 7, is received by optical signal receiving circuit plate 72
And handle optical signal, convert optical signals into electric signal and amplify, the electric signal of amplification is connected to main circuit board by shielding line
8, main circuit board 8 calculates dust concentration value by inside chip and software.
The utility model sensor of dust concentration detection device, it is structurally reasonable compact, using rectilinear sense channel, make to examine
The dust surveyed in section is vertically fallen, and directly leads out sense channel by the distinguished and admirable of blower generation, reduces the delay of dust, and examining
Addition attenuator in channel is surveyed, laser beam is avoided and is emitted on sense channel wall and generate reflective influence detection accuracy.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "inner", "outside" etc.
The orientation or positional relationship of instruction be based on the orientation or positional relationship shown in the drawings or the utility model product use when
The orientation or positional relationship usually put, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.The above descriptions are merely preferred embodiments of the present invention, and it is practical new to be not limited to this
Type, for those skilled in the art, the present invention may have various modifications and changes.All essences in the utility model
Mind and principle within, any modification, equivalent replacement, improvement and so on, should be included in the protection scope of the utility model it
It is interior.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (5)
1. a kind of sensor of dust concentration detection device characterized by comprising cabinet, be mounted on the intracorporal sense channel of case,
The fan assembly for being connected to the sampling head at sense channel upper end opening, being mounted on sense channel bottom end, the sampling head are used for
It captures dust-contained airflow and sucks dust-contained airflow in sense channel, the fan assembly is stablized distinguished and admirable by dust-contained airflow for offer
It is uniformly introduced in sense channel；
The sensor of dust concentration detection device further include: laser generator, attenuator, light-receiving member and main circuit board,
The front and back substantially symmetrical about its central axis for being mounted on the sense channel of the laser generator and attenuator relative to the sense channel
On the tube wall of two sides, the laser generator, which is capable of fixing, to be issued in 650nm point-like laser light beam to the sense channel, described to disappear
Light device for absorbing the laser beam being emitted on sense channel inner wall, the light-receiving member be mounted on the laser generator and
On sense channel tube wall among attenuator, the light-receiving member is used to receive the ash in the sense channel in dust-contained airflow
The reflected light of dirt particle and to reflected light carry out signal processing after by optical signal transmission to main circuit board, led to by the main circuit board
It crosses inside chip and software calculates dust concentration value.
2. sensor of dust concentration detection device according to claim 1, which is characterized in that the light-receiving member includes
The reflected light received is concentrated into a point by convex lens and optical signal receiving circuit plate in shielding case, the convex lens
Shape light beam receives and processes optical signal by the optical signal receiving circuit plate, converts optical signals into electric signal and amplify, described
Shielding case forms signal shielding, avoids the peripheral interference of electromagnetic field.
3. sensor of dust concentration detection device according to claim 1, which is characterized in that the fan assembly includes sky
Heart cup motor and blower, the hollow-cup motor are connect with external power supply, distinguished and admirable for driving blower rotation offer to stablize.
4. sensor of dust concentration detection device according to claim 1, which is characterized in that opened up below the cabinet
There is air outlet, the air outlet is connected to the lower end of sense channel.
5. sensor of dust concentration detection device according to claim 1, which is characterized in that the cabinet wall peripheral edge
Edge, which presses, sealing leather strap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822215788.4U CN209296528U (en) | 2018-12-27 | 2018-12-27 | A kind of sensor of dust concentration detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822215788.4U CN209296528U (en) | 2018-12-27 | 2018-12-27 | A kind of sensor of dust concentration detection device |
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| Publication Number | Publication Date |
|---|---|
| CN209296528U true CN209296528U (en) | 2019-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822215788.4U Active CN209296528U (en) | 2018-12-27 | 2018-12-27 | A kind of sensor of dust concentration detection device |
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| CN (1) | CN209296528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406360A (en) * | 2018-12-27 | 2019-03-01 | 常熟市德虞矿山机电有限公司 | A kind of sensor of dust concentration detection device |
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2018
- 2018-12-27 CN CN201822215788.4U patent/CN209296528U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406360A (en) * | 2018-12-27 | 2019-03-01 | 常熟市德虞矿山机电有限公司 | A kind of sensor of dust concentration detection device |
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