CN207081639U - Particle concentration sensor and sensor-based system - Google Patents
Particle concentration sensor and sensor-based system Download PDFInfo
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- CN207081639U CN207081639U CN201721086439.6U CN201721086439U CN207081639U CN 207081639 U CN207081639 U CN 207081639U CN 201721086439 U CN201721086439 U CN 201721086439U CN 207081639 U CN207081639 U CN 207081639U
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Abstract
The utility model provides a kind of particle concentration sensor and sensor-based system, is related to sensor technical field, and the particle concentration sensor includes processor, and the first Concentration Testing chamber and the second Concentration Testing chamber being connected respectively with processor；First Concentration Testing chamber is used to suck the first test air, the first electric signal corresponding to the test air of generation first, the first electric signal is sent to processor；Second Concentration Testing chamber is used to suck the second test air, the second electric signal corresponding to the test air of generation second, the second electric signal is sent to processor；Processor is used to receive the first electric signal and the second electric signal, and the first particle concentration corresponding with the first electric signal, and the second particle concentration corresponding with the second electric signal are exported to the associate device being connected with processor.The utility model can utilize binary channels to detect the particle concentration under two environment occasions simultaneously, preferably improve detection efficiency.
Description
Technical field
Sensor technical field is the utility model is related to, is more particularly, to a kind of particle concentration sensor and sensing
System.
Background technology
Particulate matter is solid or liquid particles shape material in air, including dust, cigarette, aerosol etc., and particulate matter is dense
Degree directly affects ambient air quality, closely bound up with health of people.
In view of the importance of particle concentration, particle concentration sensor is as people's monitoring of environmental air quality
Important devices, the sensor can be separately monitored particle concentration and output result, can also be integrated in such as air purifier
Deng in cleaning equipment.Utility model people has found that in some cases .., user wishes simultaneously to know without air in research process
The contrast situation of the environment of purification and the particle concentration of the environment Jing Guo purification of air.Such as, at the same know outdoor air
Quality, and be discharged into after via VMC, outdoor air is purified to the air quality of interior, in order to understand VMC
Purifying property.Again such as, while know in cabin and (purified by air purifier) and (purified out of my cabin without air purifier)
Particle concentration, with comparing difference.Because existing particle concentration sensor is only capable of detecting the particulate matter under an environment
Concentration, the air quality for comparing process when user is desired and purifying and not having two purified environment, or want to know that purification is set
During standby purifying property, it is common practice that particle concentration sensor is successively positioned over to two environment tests to be detected respectively
Particle concentration is surveyed, this detection mode is relatively complicated poorly efficient, wastes time and energy.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of particle concentration sensor and sensor-based system, can
The particle concentration under two environment occasions is detected simultaneously, preferably improves detection efficiency.
To achieve these goals, the technical scheme that the utility model embodiment uses is as follows：
In a first aspect, the utility model embodiment provides a kind of particle concentration sensor, including：Processor, and
The the first Concentration Testing chamber and the second Concentration Testing chamber being connected respectively with processor；First Concentration Testing chamber is used to inhale
Enter the first test air, the first electric signal corresponding to the test air of generation first, the first electric signal is sent to processor；Second
Concentration Testing chamber is used to suck the second test air, the second electric signal corresponding to the test air of generation second, by the second telecommunications
Number send to processor；Processor is used to receive the first electric signal and the second electric signal, is set to associating of being connected with processor
It is standby to export the first particle concentration corresponding with the first electric signal, and the second particle concentration corresponding with the second electric signal.
With reference in a first aspect, the utility model embodiment provides the first possible embodiment of first aspect, its
In, the first Concentration Testing chamber and the second Concentration Testing chamber be provided with blower fan, gas channels, testing light source, path channels,
Photodetector and light trapping；Wherein, blower fan is arranged at one end of gas channels, will for making gas channels form negative pressure
Test air is sucked into gas channels；Testing light source is arranged at one end of path channels, for the laser sent to be injected into light path
Passage；Light trapping is arranged at the other end of path channels, for absorbing laser；Gas channels connect with path channels, so as to swash
Light irradiation is in test air；Photodetector is arranged at the connected region of gas channels and path channels, is surveyed with gathering laser irradiation
Scattering light caused by air is tried, scattering light is converted into electric signal, and electric signal is sent to processor.
With reference to the first possible embodiment of first aspect, the utility model embodiment provides the of first aspect
Two kinds of possible embodiments, wherein, the first Concentration Testing chamber is also configured with air conduction pipe, and air conduction pipe leads to gas circuit
Road connects.
With reference to second of possible embodiment of first aspect, the utility model embodiment provides the of first aspect
Three kinds of possible embodiments, wherein, air conduction pipe is detachably connected with gas channels.
With reference to the first possible embodiment of first aspect, the utility model embodiment provides the of first aspect
Four kinds of possible embodiments, wherein, testing light source is semiconductor laser；Photodetector is photodiode.
With reference to the first possible embodiment of first aspect, the utility model embodiment provides the of first aspect
Five kinds of possible embodiments, wherein, sensor also includes housing, processor, the first Concentration Testing chamber and the inspection of the second concentration
Chamber is surveyed to may be contained within housing.
With reference to the 5th kind of possible embodiment of first aspect, the utility model embodiment provides the of first aspect
Six kinds of possible embodiments, wherein, the first air-in, the second air-in and data output are offered on housing
Mouthful；Wherein, the position of the first air-in is corresponding with the gas channels of the first Concentration Testing chamber, the second air-in
Position it is corresponding with the gas channels of the second Concentration Testing chamber；Data output is corresponding with the position of processor.
With reference to the 6th kind of possible embodiment of first aspect, the utility model embodiment provides the of first aspect
Seven kinds of possible embodiments, wherein, the first air-in and/or the second air-in are configured with dismountable air and drawn
Flow tube.
With reference to the 7th kind of possible embodiment of first aspect, the utility model embodiment provides the of first aspect
Eight kinds of possible embodiments, wherein, air conduction pipe is Collapsible structure.
Second aspect, the utility model embodiment also provide a kind of sensor-based system, including any one of first aspect is possible
The particle concentration sensor that embodiment is provided, in addition to associated with what the processor of particle concentration sensor was connected
Equipment；Wherein, associate device includes the one or more in display, air purifier, VMC.
The utility model embodiment provides a kind of particle concentration sensor and sensor-based system, has the first Concentration Testing
Chamber and the second Concentration Testing chamber, the air under two environment occasions can be detected simultaneously, and exported simultaneously respectively by processor
Particle concentration corresponding to environment occasion.With needing the cumbersome of the particle concentration under successively detection varying environment in the prior art
Program is compared, and said apparatus can utilize binary channels (that is, two inspections of the first Concentration Testing chamber and the second Concentration Testing chamber
Survey passage) while the particle concentration under two environment occasions is detected, test program is preferably simplified, when having saved test
Between, effectively increase detection efficiency.
Other feature and advantage of the disclosure will illustrate in the following description, or, Partial Feature and advantage can be with
Deduce from specification or unambiguously determine, or the above-mentioned technology by implementing the disclosure can be learnt.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 shows a kind of structural representation for particle concentration sensor that the utility model embodiment is provided；
Fig. 2 shows a kind of detection principle diagram for Concentration Testing chamber that the utility model embodiment is provided；
Fig. 3 shows the structural representation for another particle concentration sensor that the utility model embodiment is provided；
Fig. 4 shows a kind of structural representation for sensor-based system that the utility model embodiment is provided；
Fig. 5 shows a kind of operation principle schematic diagram for sensor-based system that the utility model embodiment is provided.
Icon：
The occasions of 1- first；The occasions of 2- second；10- processors；20- the first Concentration Testing chambers；30- the second Concentration Testing chambers
Room；40- housings；The air-ins of 40a- first；The air-ins of 40b- second；40c- data outputs；50- air conductions
Pipe；100- particle concentration sensors；200- associate devices.
Embodiment
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with accompanying drawing to this
The technical scheme of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Apply example, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belong to the scope of the utility model protection.
If at present user want obtain such as by purification and do not have two purified environment occasions particle concentration, it is necessary to
Successively detect respectively twice, it is cumbersome poorly efficient.To improve the problem, a kind of particle concentration that the utility model embodiment provides passes
Sensor and sensor-based system, binary channels can be utilized to detect the particle concentration of the air of two environment occasions simultaneously, below to this
Utility model embodiment describes in detail.
Embodiment one：
A kind of structural representation of particle concentration sensor shown in Figure 1, including：Processor 10, and respectively
The the first Concentration Testing chamber 20 and the second Concentration Testing chamber 30 being connected with processor 10；
First Concentration Testing chamber 20 is used to suck the first test air, the first telecommunications corresponding to the test air of generation first
Number, the first electric signal is sent to processor 10；
Second Concentration Testing chamber 30 is used to suck the second test air, the second telecommunications corresponding to the test air of generation second
Number, the second electric signal is sent to processor 10；
Processor 10 is used to receive the first electric signal and the second electric signal, defeated to the associate device being connected with processor 10
Go out the first particle concentration corresponding with the first electric signal, and the second particle concentration corresponding with the second electric signal.Wherein,
Processor 10 can be realized that electric signal has corresponding relation with particle concentration, specifically can refer to correlation by data processing circuit plate
Technology is realized, will not be repeated here.
The above-mentioned particle concentration sensor that the utility model embodiment provides, has the first Concentration Testing chamber and second
Concentration Testing chamber, the air under two environment occasions can be detected simultaneously, and each environment occasion pair is exported by processor simultaneously
The particle concentration answered.Compared with needing the complicated procedures of the particle concentration under successively detection varying environment in the prior art,
Said apparatus can utilize binary channels (that is, two sense channels of the first Concentration Testing chamber and the second Concentration Testing chamber) same
When detect two environment occasions under particle concentration, preferably simplify test program, saved the testing time, effectively improve
Detection efficiency.
In concrete application, above-mentioned particulate matter can be dust, cigarette, aerosol etc..
Specifically, above-mentioned Concentration Testing chamber includes blower fan, gas channels, testing light source, path channels, photodetector
And light trapping.Test air is referred to as the process by particulate matter sense channel by the process of Concentration Testing chamber.
That is, it is interior provided with blower fan, gas channels, testing light source, path channels, photodetector and light trapping Concentration Testing chamber can be with
Referred to as sense channel, the particulate matter sensors include the first Concentration Testing chamber and the second Concentration Testing chamber, namely including two
Individual sense channel, the air of two field settings is detected respectively.The structure of first Concentration Testing chamber and the second Concentration Testing chamber
Preferably same configuration is made, so that comparing result is more objective.
In Concentration Testing chamber, blower fan is arranged at one end of gas channels, will for making gas channels form negative pressure
Test air is sucked into gas channels；
Testing light source is arranged at one end of path channels, for the laser sent to be injected into path channels；Testing light source can
Think semiconductor laser.
Light trapping is arranged at the other end of path channels, for absorbing laser；Light trapping, light trapping structure is can be described as again,
It is mainly used for absorbing light beam, namely laser beam is then absorbed by path channels into light trapping, prevents reflected light,
So as to avoid reflected light Interference Detection, the accuracy of detection can be effectively ensured.During specific implementation, light trapping can use and light
Cavity structure angled Shu Fangxiang (namely path channels), multiple refrangible tortuous roads are set in cavity structure so that
Light beam is completely absorbed after entering the cavity structure by multiple reflections.
Gas channels connect with path channels, so that laser is irradiated in test air；Gas channels and path channels intersect,
The laser beam that path channels pass through is set to be irradiated in connected region on the test air in gas channels.
Photodetector is arranged at the connected region of gas channels and path channels, is produced with gathering laser irradiation test air
Scattering light, scattering light is converted into electric signal, and electric signal is sent to processor.In actual applications, photodetector
It can be light-sensitive device, photodiode etc..
Photodiode is also known as photodiode, is a kind of optical detection that can convert the light to electric current or voltage signal
Device, it that is to say the semiconductor devices that optical signal is become to electric signal.Tube core is often using a PN junction with photosensitive feature, to light
Change it is very sensitive, the electric current in circuit can be changed using illumination power.
By the above-mentioned means, effectively can be detected to the particulate matter in test air, corresponding electric signal is generated,
So that processor exports particle concentration corresponding with electric signal.
In practical application, visited because Concentration Testing chamber includes blower fan, gas channels, testing light source, path channels, photoelectricity
Survey device and light trapping.And first Concentration Testing chamber and the second Concentration Testing chamber configuration it is preferably identical, it can also be expected that first
Concentration Testing chamber includes the first blower fan, the first gas channels, the first testing light source, the first path channels, the first photodetection
Device and the first light trapping；By the first blower fan suction the first test air, the first photodetector is converted to first by light is scattered
Electric signal, and the first electric signal is sent to processor.Second Concentration Testing chamber include the second blower fan, the second gas channels,
Second testing light source, the second path channels, the second photodetector and the second light trapping；Pass through the test of the second blower fan suction second
Air, the second photodetector is converted to the second electric signal by light is scattered, and the second electric signal is sent to processor.
In order to make it easy to understand, a kind of detection principle diagram of Concentration Testing chamber shown in Figure 2, in fig. 2 with test
Light source is laser, and photodetector is to illustrate exemplified by light-sensitive device.Light trapping structure.Concrete operating principle is：Laser
Device sends laser beam, forms light path, and laser beam forms irradiation area in the top of light-sensitive device, and laser beam passes through light-sensitive device
Enter light trapping structure behind top.Test air containing tested particle forms air stream under the driving of blower fan, passes through photosensor
Scattering light pulse is sent after being irradiated during the top of part by laser beam, scattering light pulse is received and converted to telecommunications by light-sensitive device
Number, so as to which electric signal is sent to processor；Wherein, processor is connected with light-sensitive device.Specifically, laser can be half
Conductor laser.For sake of simplicity, path channels and gas channels are not shown in Fig. 2, light path and air stream are only depicted with arrows.
When two tested environment are room inside/outside, nacelle inside/outside or closing chamber inside/outside, and two environment occasions it
Between if be provided with test mouth (thief hatch), particulate matter sensors can be disposed therein in an environment occasion, particulate matter
The air intake for the Concentration Testing chamber for being used to test another environment occasion in sensor, which is directly set up, is directed at the test mouth.When
So, or Concentration Testing chamber configures air conduction pipe, and stretching to another environment occasion by air conduction pipe (can also
Air conduction pipe is set to penetrate thief hatch and stretch into), so as to which the air under another environment occasion is directly sucked in Concentration Testing
Chamber, so that particulate matter sensors detect to the air under two environment occasions simultaneously.Specifically, can be first dense
Degree detection chambers are configured with air conduction pipe, and air conduction pipe connects with gas channels.It should be noted that the first test environment
It should be what is isolated between the second test environment, to prevent the air intercommunication of two occasions.Therefore, either ad hoc sampling
Mouthful, or air conduction pipe is arranged, all it should be ensured that two occasion air insulateds.
Preferably, air conduction pipe is detachably connected with gas channels, in order to be selected according to practical matter using sky
Gas drainage tube removes air conduction pipe.In concrete application, air conduction pipe can be rubber tube etc., will not be repeated here.
The structural representation of another particle concentration sensor shown in Figure 3, figure 3 illustrates housing 40,
And the first air-in 40a, the second air-in 40b and the data output 40c that housing 40 opens up；Wherein, handle
Device, the first Concentration Testing chamber and the second Concentration Testing chamber may be contained within housing；First air-in 40a position with
The gas channels of first Concentration Testing chamber are corresponding, the second air-in 40b position and the second Concentration Testing chamber
Gas channels are corresponding；Data output 40c is corresponding with the position of processor.
The air conduction pipe 50 to connect with the first air-in 40a is also show in Fig. 3；First air-in
40a is detachably connected with air conduction pipe 50.
In actual applications, the first air-in and/or the second air-in are configured with dismountable air conduction
Pipe.That is, the sensor can flexibly configure according to practical application for the first air-in and/or the second air-in
Air conduction pipe.If the first air-in is identical with the bore of the second air-in, the air conduction Guan Jike of configuration
To be connected with the first air-in, can also connect with the second air conduction pipe；If the first air-in and second
The bore of air-in is different, then can be as needed that the first air-in or the second air-in are respectively configured
The air conduction pipe of corresponding bore.
It should be noted that it should be what is isolated between the first test environment and the second test environment, to prevent two fields
The air intercommunication of conjunction.The housing of particulate matter sensors is disposed therein a test environment, using be arranged at the second test environment as
Example illustrates, wherein, the second air-in need not configure air conduction pipe, and the air in the second test environment directly can be from
Second air-in enters to the second Concentration Testing chamber, and can be opened up between the first test environment and the second test environment
There is thief hatch, the first air-in is configured with air conduction pipe, and the first test is stretched to from thief hatch by air conduction pipe
In environment, thief hatch should match with air conduction pipe, between leave no gaps, to prevent air circulation.In this way,
Particulate matter sensors can detect to the air particle of the first test environment and the second test environment simultaneously, namely realize
Dual channel detection.
In addition, above-mentioned air conduction pipe can be detachably connected with air-in, empty without air conduction Tube Drain
During gas, then air conduction pipe can be pulled down, be simplified in order to the structure of particulate matter sensors, and be easy to carry.
Further, air conduction pipe can also be Collapsible structure, in order to change air conduction according to the actual requirements
The length of pipe, with suitable for a variety of occasions.
Certainly, it is additionally provided with the power supply for power supplies such as blower fan, testing light sources inside particulate matter sensors, can be with housing
Power interface is provided with, will not be repeated here.
Embodiment two：
A kind of structural representation of sensor-based system shown in Figure 4, including the particle concentration that previous embodiment provides
Sensor 100, in addition to the associate device 200 being connected with the processor of particle concentration sensor 100；Wherein, association is set
Standby 200 can include the one or more in display, air purifier, VMC etc..
A kind of operation principle schematic diagram of sensor-based system shown in Figure 5, the first occasion 1 and the second occasion 2 are shown,
Wherein, the first occasion 1 is to the first Concentration Testing chamber 20 input the first test air, and the first occasion 2 is to the first Concentration Testing chamber
The input of room 30 second test air, and processor 10 output test result to associate device 200.Wherein, test result includes
First particle concentration corresponding with the first test air, and second particulate matter corresponding with the second test air are dense
Degree.
It should be noted that the first occasion and the second occasion should be isolated from each other, air not intercommunication.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
Specific work process, the corresponding process in previous embodiment is may be referred to, will not be repeated here.
In addition, in the description of the utility model embodiment, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the utility model.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical scheme of utility model, rather than its limitations, the scope of protection of the utility model is not limited thereto, although with reference to foregoing
The utility model is described in detail embodiment, it will be understood by those within the art that：It is any to be familiar with this skill
For the technical staff in art field in the technical scope that the utility model discloses, it still can be to the skill described in previous embodiment
Art scheme is modified or can readily occurred in change, or carries out equivalent substitution to which part technical characteristic；And these modifications,
Change is replaced, and the essence of appropriate technical solution is departed from the spirit and model of the utility model embodiment technical scheme
Enclose, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be wanted with the right
The protection domain asked is defined.
Claims (10)
- A kind of 1. particle concentration sensor, it is characterised in that including：Processor, and be connected respectively with the processor The first Concentration Testing chamber and the second Concentration Testing chamber；The first Concentration Testing chamber is used to suck the first test air, the first electricity corresponding to generation the first test air Signal, first electric signal is sent to the processor；The second Concentration Testing chamber is used to suck the second test air, the second electricity corresponding to generation the second test air Signal, second electric signal is sent to the processor；The processor is used to receive first electric signal and second electric signal, to the pass being connected with the processor Join equipment and export corresponding with first electric signal the first particle concentration, and with second electric signal corresponding second Particle concentration.
- 2. sensor according to claim 1, it is characterised in that the first Concentration Testing chamber and second concentration Detection chambers are provided with blower fan, gas channels, testing light source, path channels, photodetector and light trapping；Wherein, the blower fan is arranged at one end of the gas channels, will test for making the gas channels form negative pressure Air is sucked into the gas channels；The testing light source is arranged at one end of the path channels, for the laser sent to be injected into the path channels；The light trapping is arranged at the other end of the path channels, for absorbing the laser；The gas channels connect with the path channels, so that the laser is irradiated in the test air；The photodetector is arranged at the connected region of the gas channels and the path channels, is irradiated with gathering the laser Scattering light caused by the test air, the scattering light is converted into electric signal, and the electric signal is sent to the place Manage device.
- 3. sensor according to claim 2, it is characterised in that the first Concentration Testing chamber is also configured with air and drawn Flow tube, the air conduction pipe connect with the gas channels.
- 4. sensor according to claim 3, it is characterised in that the air conduction pipe and the gas channels are detachable Connection.
- 5. sensor according to claim 2, it is characterised in that the testing light source is semiconductor laser；The photodetector is photodiode.
- 6. sensor according to claim 2, it is characterised in that the sensor also includes housing, the processor, institute State the first Concentration Testing chamber and the second Concentration Testing chamber may be contained within the housing.
- 7. sensor according to claim 6, it is characterised in that the first air-in, are offered on the housing Two air-ins and data output；Wherein, the position of first air-in is corresponding with the gas channels of the first Concentration Testing chamber, described The position of second air-in is corresponding with the gas channels of the second Concentration Testing chamber；The data output and institute The position for stating processor is corresponding.
- 8. sensor according to claim 7, it is characterised in that first air-in and/or second sky Gas input port is configured with dismountable air conduction pipe.
- 9. sensor according to claim 8, it is characterised in that the air conduction pipe is Collapsible structure.
- A kind of 10. sensor-based system, it is characterised in that including the particle concentration sensor described in any one of claim 1 to 9, Also include the associate device being connected with the processor of the particle concentration sensor；Wherein, the associate device includes aobvious Show the one or more in device, air purifier, VMC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721086439.6U CN207081639U (en) | 2017-08-28 | 2017-08-28 | Particle concentration sensor and sensor-based system |
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| CN201721086439.6U CN207081639U (en) | 2017-08-28 | 2017-08-28 | Particle concentration sensor and sensor-based system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356505A (en) * | 2017-08-28 | 2017-11-17 | 南京中科乾安智能科技有限公司 | Particle concentration sensor and sensor-based system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107356505A (en) * | 2017-08-28 | 2017-11-17 | 南京中科乾安智能科技有限公司 | Particle concentration sensor and sensor-based system |
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