CN109724905A - Particle concentration detection device, method and air processor - Google Patents
Particle concentration detection device, method and air processor Download PDFInfo
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- 239000013618 particulate matter Substances 0.000 claims description 22
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- 239000000428 dust Substances 0.000 description 1
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Abstract
The present invention provides a kind of particle concentration detection device, method and air processor.Particle concentration detection device includes main body, is equipped with detection air duct and air duct control device in main body, detects and be equipped with photoelectric detector and air draft mechanism in air duct, main body is additionally provided with the first inlet section, the second inlet section, the first outlet section and the second outlet section；First inlet section and the second inlet section pass through air duct control device respectively and are connected with the air intake for detecting air duct, and the first outlet section and the second outlet section pass through air duct control device respectively and be connected with the outlet air end for detecting air duct；Air duct control device is used to select one in the first inlet section of control and the second inlet section to be connected with air intake, and for selecting one in the first outlet section of control and the second outlet section to be connected with outlet air end.Particle concentration detection device of the invention can be realized the accurate detection to the particle concentration of two environment, and detection accuracy is high, compact-sized.
Description
Technical field
The present invention relates to air detection fields, and in particular to a kind of particle concentration detection device, method and air-treatment
Device.
Background technique
Normal air particulate matter sensors currently on the market have a negative pressure outlet section, and an air intake vent is only capable of reality
Fine particle measurement in a kind of air of existing environment.But in some new application fields, such as new wind devices, vehicle-mounted clarifier
In equal fields, there are the environment that two are isolated, such as the demand that two environment of environment purification and natural environment are detected, it is existing
Air particle sensor cannot achieve the detection to two varying environments, cannot good meet demand.
Summary of the invention
The embodiment of the present invention provides a kind of particle concentration detection device, method and air processor, to not
It is detected with the particulate matter in the air of environment.
In order to achieve the above objectives, on the one hand the embodiment of the present invention provides a kind of particle concentration detection device, including master
Body, main body is interior to be equipped with detection air duct and air duct control device, detects and is equipped with photoelectric detector and air draft mechanism in air duct, main body is also
Equipped with the first inlet section, the second inlet section, the first outlet section and the second outlet section；First inlet section and the second inlet section lead to respectively
It crosses air duct control device and is connected with the air intake for detecting air duct, the first outlet section and the second outlet section pass through air duct control respectively
Device is connected with the outlet air end in detection air duct；Air duct control device is for selecting in the first inlet section of control and the second inlet section
One be connected with air intake, and for select control the first outlet section and the second outlet section in one and outlet air end phase
Connection.
Optionally, air duct control device is two six-way valves.
Optionally, air duct control device includes the first two position three-way valve and the second two position three-way valve, wherein the one or two three
Port valve connects the first inlet section, the second inlet section and air intake；Second two position three-way valve connects the first outlet section, the second outlet section
And outlet air end.
Optionally, two six-way valves are solenoid valve or hydraulic valve.
Optionally, the first two position three-way valve and the second two position three-way valve are solenoid valve or hydraulic valve.
It optionally, further include measuring circuit, driving circuit, signal output apparatus and processor；Measuring circuit, driving circuit
It is connected with processor with signal output apparatus；Measuring circuit is connected with photoelectric detector, for obtaining photoelectric detector
Detection signal；Driving circuit is separately connected with photoelectric detector, air duct control device and air draft mechanism, and according to processor
Control signal control photoelectric detector, air duct control device and air draft mechanism；Processor is used to generate detection according to detection signal
As a result, and to driving circuit send photoelectric detector, air duct control device and air draft mechanism control signal；Signal output apparatus
For output test result.
Optionally, the first inlet section and/or the second inlet section are equipped in filter device, heating device and drying device extremely
Few one kind.
Second aspect of the embodiment of the present invention provides a kind of airhandling equipment, sets using particle concentration above-mentioned detection
It is standby
The third aspect of the embodiment of the present invention provides a kind of particle concentration detection method, is examined using particle concentration above-mentioned
Measurement equipment, detection method includes the following steps: the first inlet section being connected with air intake, by the first outlet section and outlet air end phase
Connection obtains first detection signal from photoelectric detector；Or the second inlet section is connected with air intake, by the second outlet section
It is connected with outlet air end, obtains the second detection signal from the photoelectric detector.
Particle concentration detection device and air processor provided in an embodiment of the present invention can be realized to varying environment
Air in particulate matter detected, during to a certain environment measuring, surrounding air is inhaled into particulate matter from environment
Concentration detection device is flow back into environment again after tested, mixed flow will not occur with the air of other environment.Since air inlet goes out
Gas is in the same pressure and particle substance environment, no mixed flow phenomenon, can prevent because particle concentration detection device inlet section and
Outlet section is in different environment, not because of mixed flow caused by particle concentration is different, air-flow is different or pressure difference is different and measurement
Accurate problem realizes the precise measurement of the air to two varying environments, easy to operate, at low cost.
Particle concentration detection method provided in an embodiment of the present invention, by switching different inlet section and outlet section, point
The detection for not carrying out particulate matter using photoelectric detector, can obtain the accurate particulate matter numerical value of varying environment, measurement accuracy
Height, it is easy to operate.
Detailed description of the invention
Fig. 1 is the schematic diagram of the particle concentration detection device of the embodiment of the present invention；
Fig. 2 and Fig. 3 is the schematic diagram of another implementation of the particle concentration detection device of the embodiment of the present invention；
Fig. 4 is the electrical block diagram of the particle concentration detection device of the embodiment of the present invention；
Fig. 5 is the flow chart of the particle concentration detection method of the embodiment of the present invention.
Drawing reference numeral explanation:
11, the first inlet section；12, the second inlet section；21, the first outlet section；22, the second outlet section；3, air duct control dress
It sets；31, spool；32, the first two position three-way valve；33, the second two position three-way valve；3A, the first air inlet interface；3B, the second air inlet connect
Mouthful；3D, the first outlet air interface；3C, the first detection interface；3E, the second outlet air interface；3F, the second detection interface；100, particulate matter
Concentration detection device；200, first environment；300, second environment；4, air duct is detected；5, photoelectric detector；6, air draft mechanism；71,
Photoelectric detector driving circuit；72, air draft mechanism driving circuit；73, air duct control device driving circuit；8, measuring circuit；9,
Processor；10, signal output apparatus 10.
Specific embodiment
The disclosure for providing the following explanation with reference to attached drawing comprehensive understanding is helped to be limited by appended claims and their equivalents
Various embodiments.It includes various specific details to help to understand, but they should be regarded merely as schematically.Cause
This, it will be appreciated by those of ordinary skill in the art that various changes or modification can be made to various embodiments described, and
Without departing from the scope of the present disclosure and spirit.In addition, for clarity and conciseness, the description to known function and structure will be omitted.
It should be appreciated that singular " one ", "one" and "the" include plural form, it is not unless clearly indicated by the context
So.Thus, for example, also including the reference to surface as one or more to the reference of " assembly surface ".
When used herein, term " includes " and/or " comprising " specify depositing for disclosed function, operation or component
, but do not preclude the presence or addition of one or more other functions, operation or component.It will be further appreciated that when in this theory
In use, term " includes " and/or " having " specified illustrated feature, integer, operation, element and/or component in bright book
In the presence of, but do not preclude the presence or addition of other one or more features, integer, operation, element and/or component and/or its group.
When used herein, term "and/or" includes that one or more aforementioned any of item and wholes listed combine.Example
Such as, " A or B " may include A or including B or including A and B.
When herein in use, the ordinal number of " first ", " second " etc. can modify various groups of various embodiments
Part, but these components are not limited.For example, these terms do not limit the order and/or importance of component.These terms are only used
In a component is mutually distinguished with another component.For example, the first user equipment and second user equipment are use different from each other
Family equipment.For example, first assembly can be indicated as the second component, and vice versa, without departing from the scope of the present disclosure.
When a component " is connected to " another component, which can be connected directly or be couple to another group
Part, or other assemblies (or multiple) can be inserted therebetween.On the contrary, when a component " is directly connected to " another component
When, it cannot be inserted into component between two parties therebetween.
Embodiment one
As shown in Figure 1, embodiment one provides a kind of particle concentration detection device 100, including main body, it is equipped in main body
Air duct 4 and air duct control device 3 are detected, detects and is equipped with photoelectric detector 5 and air draft mechanism 6 in air duct 4, main body is additionally provided with first
Inlet section 11, the second inlet section 12, the first outlet section 21 and the second outlet section 22；First inlet section 11 and the second inlet section 12 are divided
It is not connected by air duct control device 3 with the air intake in detection air duct 4, the first outlet section 21 and the second outlet section 22 lead to respectively
It crosses air duct control device 3 and is connected with the outlet air end for detecting air duct 4；Air duct control device 3 is for selecting the first inlet section of control
11 and second one in inlet section 12 be connected with air intake, and for selecting the first outlet section 21 of control and the second outlet air
One in portion 22 is connected with outlet air end.
The particle concentration detection device 100 of the present embodiment, is respectively equipped with two inlet sections, two outlet sections, two into
Wind portion and two outlet sections pass through air duct control device 3 respectively and are connected with detection air duct 4, and air duct control device 3 can choose
One in first inlet section 11 and the second inlet section 12 is connected with air intake, and for selecting the first outlet section of control
21 and second one in outlet section 22 be connected with outlet air end, in this way can be by the first inlet section 11, the first outlet section 21 and
One environment 200 is connected, and the second inlet section 12, the second outlet section 22 are connected with second environment 300, passes through air duct control device
3 selection photoelectric detectors 5 detect the air from first environment 200 or the air from second environment 300, realize one
Particle concentration detection device 100 detects two environment.
Optionally, detection air duct 4 is curved channel structure, and the generation of dust accumulation can be effectively prevented.Optionally, as shown in figure 1
Shown, inlet section is horizontally extending, and air, by the detection pipeline of arc, switchs to edge after general horizontal direction enters
Generally vertical direction flowing.
Specifically, when needing to detect first environment 200, air duct control device 3 is by the first inlet section 11 and air intake phase
Connection, the first outlet section 21 is connected with outlet air end, the first inlet section 11 and the first outlet section 21 can be connected by connecting line
Connect first environment 200.Air draft mechanism 6 is opened, under the effect of air draft mechanism 6, the air of first environment 200 is through the first inlet section 11
It enters in detection air duct 4, photoelectric detector 5 detects the particle concentration in air, and then air is returned through the first outlet section 21
Into first environment 200, during this, the air of first environment 200 is inhaled into particle concentration inspection from first environment 200
Measurement equipment 100 is flow back into first environment 200 again after tested, will not be with other environment, such as the sky of second environment 300
Mixed flow occurs for gas.It is identical as the testing principle to first environment 200 to the detection of second environment 300, the difference is that air duct
Second inlet section 12 is connected by the control of control device 3 with air intake, and the second outlet section 22 is connected with outlet air end.
Since air inlet outlet is in the same pressure and particle substance environment, no mixed flow phenomenon can be prevented because of particle concentration
The inlet section and outlet section of detection device 100 are in different environment, not because of particle concentration difference, air-flow difference or pressure difference
With caused mixed flow and inaccurate problem is measured, realizes the precise measurement of the air to two varying environments, it is easy to operate, at
This is low.
Further, as shown in fig. 1, two six-way valves can be used in air duct control device 3.Specifically, this two six lead to
There is valve the first air inlet interface 3A, the second air inlet interface 3B, the first outlet air interface 3D, the first detection interface 3C, the second outlet air to connect
The detection of mouth 3E and second interface 3F amounts to six interfaces；First air inlet interface 3A passes through the first inlet section 11 and first environment 200
It is connected；First outlet air interface 3D is connected by the first outlet section 21 with first environment 200, and the second air inlet interface 3B passes through the
Two inlet sections 12 are connected with second environment 300；Second outlet air interface 3E is connected by the second outlet section 22 with second environment 300
It is logical；First detection interface 3C is connected with the air intake for detecting air duct 4；Second detection interface 3F and the outlet air end for detecting air duct 4
It is connected；Inside two six-way valves, the first air inlet interface 3A and the second air inlet interface 3B are connected with the first detection interface 3C；
First outlet air interface 3D, the second outlet air interface 3E are connected with the second detection interface 3F；Two six-way valves have spool 31, spool
31 can move between the first position and the second position.
Optionally, spool 31 is rod-shaped, and the both ends of spool 31 are respectively equipped with sealing, and spool 31 can be driven and then be controlled
Two sealings move synchronously, and as shown in fig. 1, when spool 31 moves upwards, the first air inlet of closing interface 3A and first goes out
Wind interface 3D opens the second air inlet interface 3B and the second outlet air interface 3E；When spool 31 moves downward, opens the first air inlet and connect
Mouth 3A and the first outlet air interface 3D, the second air inlet of closing interface 3B and the second outlet air interface 3E.
Specific detection process is illustrated below.
When needing the air to first environment 200 to detect, control valve core 31 moves to first position, and spool 31 closes
The second air inlet interface 3B and the second outlet air interface 3E are closed, the first air inlet interface 3A is detected into interface 3C with first and is connected, by the
One outlet air interface 3D is connected with the second detection interface 3F.In this way, after air draft mechanism 6 is opened, it can be by the air of first environment 200
It is introduced from the first inlet section 11, the air intake in detection air duct 4 is entered by the first detection interface 3C, then passes through Photoelectric Detection
After device 5 detects, the outlet air end in air duct 4 enters the second detection interface 3F after testing, then returns to the through the first outlet section 21
In one environment 200.In whole process air will not with the air of other environment occur mixed flow, it is ensured that measurement result it is accurate
Property.
When needing the air to second environment 300 to detect, control valve core 31 moves to the second position, and spool 31 closes
The first air inlet interface 3A and the first outlet air interface 3D are closed, the second air inlet interface 3B is detected into interface 3C with first and is connected, by the
Two outlet air interface 3E are connected with the second detection interface 3F.In this way, after air draft mechanism 6 is opened, it can be by the air of second environment 300
It is introduced from the second inlet section 12, the air intake in detection air duct 4 is entered by the first detection interface 3C, then passes through Photoelectric Detection
After device 5 detects, the outlet air end in air duct 4 enters the second detection interface 3F after testing, then returns to the through the second outlet section 22
In two environment 300.In whole process air will not with the air of other environment occur mixed flow, it is ensured that measurement result it is accurate
Property.
Optionally, two six-way valves are solenoid valve or hydraulic valve.More preferably, two six-way valves are solenoid valve, in this way can be with
The volume of two six-way valves is done it is compact, be conducive to reduce particle concentration detection device 100 overall volume.
Another implementation of the air duct control device 3 shown in Fig. 2 and Fig. 3, air duct control device 3 use two
A two position three-way valve is the first two position three-way valve 32 and the second two position three-way valve 33.First two position three-way valve 32 connection first into
Wind portion 11, the second inlet section 12 and the air intake for detecting air duct 4, and selectively by the first inlet section 11 and the second inlet section 12
In one be connected with air intake；Second two position three-way valve 33 connects the first outlet section 21, the second outlet section 22 and detection wind
The outlet air end in road 4, and selectively by one in the first outlet section 21 and the second outlet section 22 and the outlet air end in detection air duct 4
It is connected.First inlet section 11 and the first outlet section 21 are connected with first environment 200, the second inlet section 12 and the second outlet section
22 are connected with second environment 300.
Specifically, the first air inlet interface 3A, the second air inlet interface 3B and the first inspection are equipped with inside the first two position three-way valve 31
Interface 3C is surveyed, the first air inlet interface 3A is connected with the first inlet section 11, and the second air inlet interface 3B is connected with the second inlet section 12
It connects, the first detection interface 3C is connected with the air intake for detecting air duct 4.First two position three-way valve is optionally by the first air inlet
One in the air inlet of interface 3A and second interface 3B is connected with the first detection interface 3C.The internal junction of second two position three-way valve 32
Structure and connection relationship are similar to the first two position three-way valve, are no longer described in detail.
In this way, may be implemented will be to the detection of two environment by controlling two two position three-way valves respectively.Below to specific
Detection process be illustrated.
When needing the air to first environment 200 to detect, the first two position three-way valve 32 is controlled by the first inlet section
12 are connected with the first detection interface 3C, and interface 3F phase is detected in the first outlet section 21 and second by the second two position three-way valve 33 of control
Connection.In this way, the air of first environment 200 can be introduced from the first inlet section 11 after air draft mechanism 6 is opened, by the first inspection
The air intake that interface 3C enters detection air duct 4 is surveyed, then after the detection of photoelectric detector 5, the outlet air in air duct 4 after testing
End enters the second detection interface 3F, then returns in first environment 200 through the first outlet section 21.Air will not in whole process
Mixed flow occurs with the air of other environment, it is ensured that the accuracy of measurement result.
When needing the air to second environment 300 to detect, the first two position three-way valve 32 is controlled by the second inlet section
12 are connected with the first detection interface 3C, and interface 3F phase is detected in the second outlet section 22 and second by the second two position three-way valve 33 of control
Connection.In this way, the air of second environment 300 can be introduced from the second inlet section 12 after air draft mechanism 6 is opened, by the first inspection
The air intake that interface 3C enters detection air duct 4 is surveyed, then after the detection of photoelectric detector 5, the outlet air in air duct 4 after testing
End enters the second detection interface 3F, then returns in second environment 300 through the second outlet section 22.Air will not in whole process
Mixed flow occurs with the air of other environment, it is ensured that the accuracy of measurement result.
In addition, in the case where using two two position three-way valves, other measurement methods can also be realized, such as by the first ring
The air in border 200 introduces, and is drained into second environment 300 after the detection of photoelectric detector 5；Or by second environment 300
Air introduces, and is drained into first environment 200 after the detection of photoelectric detector 5.Embodiment of above is in the guarantor of the application
Within the scope of shield.
Optionally, the first two position three-way valve 32 and the second two position three-way valve 33 can use solenoid valve or hydraulic valve.It is preferred that
Using solenoid valve.
It should be noted that the air duct control device 3 in the present embodiment is not limited to two six-way valves and two position three-way valve
Mode, it is any can be realized air duct switching structure within the scope of the limitation of the application.
In addition, the present embodiment is not limited to two different environment of detection, it can also be by increasing or adjusting the side of control valve
Formula detects three or more varying environments, and any scheme using technical concept same as the present embodiment is in the present embodiment
Limitation within the scope of.
Further, as shown in Figure 4, particle concentration detection device 100 further includes measuring circuit 8, driving circuit, letter
Number output circuit 10 and processor 9；Measuring circuit 8, driving circuit and signal output apparatus 10 are connected with processor；Measurement
Circuit 8 is connected with photoelectric detector 5, for obtaining the detection signal of photoelectric detector 5；Driving circuit and photoelectric detector 5,
Air duct control device 3 and air draft mechanism 6 are separately connected, and control photoelectric detector 5, air duct according to the control signal of processor 9
Control device 3 and air draft mechanism 6；Processor 9 is used to generate testing result according to detection signal, and sends photoelectricity to driving circuit
The control signal of detector 5, air duct control device 3 and air draft mechanism 6；Signal output apparatus 10 is used for output test result.
Optionally, the transmission line (not shown) arranged in a crossed manner with detection air duct 4 is equipped in detection air duct 4,
Photoelectric detector 5 is arranged in transmission line.
Specifically, photoelectric detector 5 includes laser emitter and receiver (not shown), and laser emitter setting exists
The other side of transmission line is arranged in the side of transmission line, receiver, and the laser of laser transmitter projects passes through detection
It is received behind air duct 4 by receiver.
Intersection when detect has the air-flow for carrying particulate matter to pass through in air duct 4, across detection air duct 4 and transmission line
The particulate matter in region is scattered the laser beam in transmission line, and photoelectric detector 5 receives the optical signal of scattering, and will
Optical signal is converted into electric signal and is sent to measuring circuit 8, and measuring circuit 8 amplifies electric signal, filtering and analog-to-digital conversion process are
Processor 9 is sent to after digital signal, processor 9 is analyzed to obtain the testing result of particulate matter.
Specifically, measuring circuit 8 may include amplifying circuit, filter circuit and analog to digital conversion circuit.Due to laser emitter
The cross-sectional diameter very little of the laser beam exported, the optical energy density of unit area are very high.It detects air duct 4 and optical transport is logical
When road has air-flow to pass through, the small part particulate matter in air-flow passes through the irradiation area of laser beam, and each particulate matter passes through laser
The optical signal that beam irradiation area generates scattering can be detected by photoelectric detector 5, and particulate matter passes through laser beam
The time of irradiation area is very short (μ s magnitude), and therefore, the optical signal received can be converted into a μ s magnitude by photoelectric detector 5
Electric signal, measuring circuit 8 amplifies electric signal, filter and analog-to-digital conversion after can be obtained by the analysis of processor 9
The testing result of particulate matter into air-flow.
For PM2.5 or particle more smaller than PM2.5 diameter, due to the unit of the laser beam of laser output
Area optical energy density is very high, even if the diameter very little of particulate matter, particulate matter scatters generated optical signal to laser beam
Energy is also enough to be detected by photoelectric detector 5, improves the detection accuracy of particulate matter.
Receiver is used to absorb the laser beam transmitted through air-flow by transmission line.Laser emitter output swashs
Although particulate matter of the light light beam in the air-flow for being irradiated to detection air duct 4 and transmission line intersecting area can scatter,
It is that the laser beam of only fraction is scattered, most laser beam can also continue to transmit along optical transmission pathway, particle
The finite volume of object sensor needs to absorb unscattered most of laser beam using absorption means.
Optionally, receiver can be light trapping, such as can be pentagon light trapping, triangle light trapping or circular light
Trap.But it is not limited to this, and the receiver of other forms also can be used.
Specifically, measuring circuit 8 may include amplifying circuit, and the detection signal for the photoelectric detector 5 to acquisition carries out
Amplification.
Specifically, driving circuit may include photoelectric detector driving circuit 71, air draft mechanism driving circuit 72 and air duct control
Device driving circuit 73 processed.
Photoelectric detector driving circuit 71 is used to receive the first control signal of processor 9, and controls photoelectric detector 5
Working condition specifically controls laser emitter and receiver operation；
Air draft mechanism driving circuit 72 is used to receive the second control signal of processor 9, and controls the work of air draft mechanism 6
State；
Air duct control device driving circuit 73 is used to receive the third control signal of processor 9, and controls air duct control dress
Set 3 working condition.
Processor 9 is used to generate testing result according to detection signal, and sends photoelectric detector 5, air duct to driving circuit
The control signal of control device 3 and air draft mechanism 6.
Optionally, first inlet section 11 and/or second inlet section 12 are equipped with filter device, heating device and do
At least one of dry device.
Wherein, filter device can use filter screen, filter cotton, to the large granular impurity crossed in air filtering, such as willow
Wadding etc., to reduce interference of the impurity to testing result.
Heating device and drying device are used to remove the moisture in the air entered by inlet section, prevent air from entering inspection
Solidifying mist is generated after surveying in channel, and then influences the accuracy of test result.Electric heater unit, drying device can be used in heating device
Dehumidification device can be used, or made of hygroscopic material.
Embodiment two
Embodiment two provides a kind of airhandling equipment, and which employs the particle concentration detection devices of embodiment one
100.The airhandling equipment of the present embodiment can be that air purifier, fresh air mechanism, air-conditioning etc. are any to carry out air
The equipment of processing may be implemented to detect the particle concentration of the air of two varying environments.For example, airhandling equipment
It can be air conditioning for automobiles or vehicular air purifier, first environment 200 is vehicle external environment, and second environment 300 is interior drives
Environment in room, such airhandling equipment may be implemented to the particle concentration of vehicle external environment and in interior driver's cabin
The detection respectively of grain object concentration.
Embodiment three
Embodiment three provides a kind of particle concentration detection method, sets using the particle concentration detection of embodiment one
Standby 100.The flow chart of the particle concentration detection method of embodiment three is shown in Fig. 5.
Detection method includes the following steps for the particle concentration of the present embodiment:
First inlet section, 11 first inlet section 11 is connected by S03 with the air intake, by first outlet section
21 are connected with the outlet air end；
S04 obtains first detection signal from the photoelectric detector 5；
Or
Second inlet section 12 is connected by S05 with the air intake, by second outlet section 22 and the outlet air
End is connected,
S06 obtains the second detection signal from the photoelectric detector 5.
The particle concentration detection method of the present embodiment, can be real by executing step S03, S04 or step S05, S06
Now the particulate matter in the air of varying environment is detected, during to a certain environment measuring, surrounding air is from environment
It is inhaled into particle concentration detection device 100, is flow back into environment again after tested, will not be occurred with the air of other environment
Mixed flow.Since air inlet outlet is in the same pressure and particle substance environment, no mixed flow phenomenon can prevent from detecting because of particle concentration
The inlet section and outlet section of equipment 100 are in different environment, because particle concentration is different, air-flow is different or pressure difference difference is led
The mixed flow and the inaccurate problem of measurement of cause, realize the precise measurement of the air to two varying environments, easy to operate, cost
It is low.
Optionally, step S03, S04 or step S05, S06 are being executed, further includes: step S01 obtains control signal；
Step S02 determines detection first environment 200 or detects second environment 300.
It needs to detect first environment 200 according to external control signal confirmation or detects second environment 300, if desired
When detecting first environment 200, S03, S04 are thened follow the steps；If desired detect second environment 300 when, then follow the steps S05,
S06。
The particle concentration detection method that embodiment three provides, it is sharp respectively by switching different inlet section and outlet section
The detection of particulate matter is carried out with photoelectric detector, can obtain the accurate particulate matter numerical value of varying environment, and measurement accuracy is high, behaviour
Facilitate.
More than, only specific embodiments of the present invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with sheet
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover at this
Within the protection scope of invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (9)
1. a kind of particle concentration detection device, including main body, main body is interior to be equipped with detection air duct and air duct control device, the inspection
It surveys and is equipped with photoelectric detector and air draft mechanism in air duct, which is characterized in that the main body is additionally provided with the first inlet section, the second air inlet
Portion, the first outlet section and the second outlet section；First inlet section and second inlet section pass through the air duct respectively and control
Device is connected with the air intake in the detection air duct, and first outlet section and second outlet section pass through the wind respectively
Road control device is connected with the outlet air end in the detection air duct；
The air duct control device be used for select control first inlet section and second inlet section in one with it is described
Air intake is connected, and for selecting to control one in first outlet section and second outlet section and the outlet air
End is connected.
2. particle concentration detection device according to claim 1, which is characterized in that the air duct control device is one
Two six-way valves.
3. particle concentration detection device according to claim 1, which is characterized in that the air duct control device includes the
One two position three-way valve and the second two position three-way valve, wherein
First two position three-way valve connects first inlet section, second inlet section and the air intake；
Second two position three-way valve connects first outlet section, second outlet section and the outlet air end.
4. particle concentration detection device according to claim 2, which is characterized in that two six-way valves are solenoid valve
Or hydraulic valve.
5. particle concentration detection device according to claim 3, which is characterized in that first two position three-way valve and institute
Stating the second two position three-way valve is solenoid valve or hydraulic valve.
6. particle concentration detection device according to claim 3, which is characterized in that further include measuring circuit, driving electricity
Road, signal output apparatus and processor；
The measuring circuit, the driving circuit and the signal output apparatus are connected with the processor；
The measuring circuit is connected with the photoelectric detector, for obtaining the detection signal of the photoelectric detector；
The driving circuit is separately connected with the photoelectric detector, the air duct control device and the air draft mechanism, and root
The photoelectric detector, the air duct control device and the air draft mechanism are controlled according to the control signal of the processor；
The processor is used to generate testing result according to the detection signal, and sends the photoelectricity inspection to the driving circuit
Survey the control signal of device, the air duct control device and the air draft mechanism；
The signal output apparatus is for exporting the testing result.
7. particle concentration detection device according to claim 1, which is characterized in that first inlet section and/or institute
The second inlet section is stated equipped at least one of filter device, heating device and drying device.
8. a kind of air processor, it is characterised in that use such as particle concentration of any of claims 1-7
Detection device.
9. a kind of particle concentration detection method, which is characterized in that using such as particulate matter of any of claims 1-7
Concentration detection device, described detection method includes the following steps:
First inlet section is connected with the air intake, first outlet section is connected with the outlet air end, from
The photoelectric detector obtains first detection signal；Or
Second inlet section is connected with the air intake, second outlet section is connected with the outlet air end, from
The photoelectric detector obtains the second detection signal.
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| CN201711037738.5A CN109724905B (en) | 2017-10-30 | 2017-10-30 | Particulate matter concentration detection equipment, particulate matter concentration detection method and air treatment device |
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