CN106940286A - Particle concentration detection means - Google Patents
Particle concentration detection means Download PDFInfo
- Publication number
- CN106940286A CN106940286A CN201710264246.3A CN201710264246A CN106940286A CN 106940286 A CN106940286 A CN 106940286A CN 201710264246 A CN201710264246 A CN 201710264246A CN 106940286 A CN106940286 A CN 106940286A
- Authority
- CN
- China
- Prior art keywords
- piezoelectric transducer
- detected
- gas
- control unit
- piezoelectric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N2015/0042—Investigating dispersion of solids
- G01N2015/0046—Investigating dispersion of solids in gas, e.g. smoke
Abstract
The present invention provides a kind of particle concentration detection means, belongs to environment monitoring equipment technical field.The device includes：Air inlet pipe, piezoelectric transducer and control unit, wherein, the first end of air inlet pipe and the connection of piezoelectric transducer；Piezoelectric transducer is connected with control unit；Air inlet pipe is used for the inner chamber that gas to be detected is delivered to piezoelectric transducer；Piezoelectric transducer is used under the shock of the particulate matter of gas to be detected, produces piezoelectric signal, and send piezoelectric signal to control unit；The pulse frequency that control unit, the flow of the gas to be detected for detecting input piezoelectric transducer, and flow according to gas to be detected and piezoelectric signal are produced determines the concentration of the particulate matter in gas to be detected.The particle concentration detection means that the present invention is provided, improves the detection efficiency of particle concentration.
Description
Technical field
The present invention relates to environment monitoring equipment technical field, more particularly to a kind of particle concentration detection means.
Background technology
Built environment friendly society is further emphasized in " 13 " planning, to technologies such as cleaning fire coal, combustion with reduced pollutants
The demand sustainable growth of development.Correlative study shows：The particulate matter that the high temperature such as motor vehicle, fire coal Combustion Source is produced is atmospheric environment
In a secondary source particulate matter main source.The particulate matter that Combustion Source is produced is small, such as engine emission particle concentration peak value grain
Footpath is less than 50 nanometers.Wherein, the superfine particulate matter (PM0.1) of fine particle (PM2.5), especially diameter less than 100 nanometers is right
The harm of environment and health is very big, and the deposition in human respiratory tract is higher than 50%, and tiny particulate matter gets over energy
Go deep into respiratory tract tip, it might even be possible to penetrate human body alveolar and enter blood, cause asthma, lung cancer and angiocardiopathy etc..
In the prior art, particulate matter (by taking nano-scale particle thing as an example) concentration detection method mainly has two kinds, and one is to pass through
Nuclei of condensation corpuscular counter grows up nano-scale particle thing to micron order, recycles optical particle counter metering, but this method
System complex, it is bulky, and operating temperature limitation it is larger；Two be by electrometer by the charged rear measurement count of particulate matter,
But because there is certain uncertainty in charged distribution so that electrometer is difficult to normal work at high temperature.
Therefore, using present particle concentration detection method so that the detection complexity of particle concentration is higher, so that
Cause the detection efficiency of particle concentration not high.
The content of the invention
The present invention provides a kind of particle concentration detection means, to improve the detection efficiency of particle concentration.
The embodiment of the present invention provides a kind of particle concentration detection means, including：
Air inlet pipe, piezoelectric transducer and control unit, wherein, the first end of the air inlet pipe and the piezoelectric transducer
Connection；The piezoelectric transducer is connected with described control unit；
The air inlet pipe is used for the inner chamber that gas to be detected is delivered to the piezoelectric transducer；The piezoelectric transducer is used
In under the shock in the particulate matter of the gas to be detected, piezoelectric signal is produced, and the piezoelectricity is sent to described control unit
Signal；Described control unit, the flow of the gas to be detected for detecting the input piezoelectric transducer, and according to described to be checked
Survey the flow of gas and the pulse frequency of piezoelectric signal generation determines the concentration of the particulate matter in the gas to be detected.
In an embodiment of the present invention, it is provided with the piezoelectric transducer in piezo-electric effect layer, the piezo-electric effect layer
Two corresponding faces on be coated with metal level, form electrode.
In an embodiment of the present invention, also include：
Escaping pipe, the first end of the escaping pipe is connected with the piezoelectric transducer, and with the first end of the air inlet pipe
Angle be the first predetermined angle, first predetermined angle be more than or equal to 60 degree and be less than or equal to 120 degree.
In an embodiment of the present invention, the opening that the first end of the air inlet pipe is connected with the piezoelectric transducer is first
Opening, the opening that the first end of the escaping pipe is connected with the piezoelectric transducer is the second opening, first opening and institute
The second opening is stated for same opening.
In an embodiment of the present invention, first opening is located at the centre position of the side wall of the piezoelectric transducer, and
The angle of the piezoelectric transducer and the escaping pipe is the second predetermined angle, second predetermined angle be more than or equal to 30 degree and
Less than or equal to 45 degree.
In an embodiment of the present invention, also include：
Aperture plate features, the aperture plate features are arranged in the escaping pipe, and the two ends of the aperture plate features are set respectively
There is pressure sensor.
In an embodiment of the present invention, also include：
High efficiency particulate air filter, the high efficiency particulate air filter is arranged in the escaping pipe.
In an embodiment of the present invention, also include：
Temperature sensor, the degree sensor is arranged in the piezoelectric transducer, and the temperature sensor is used to detect
The temperature value of gas to be detected in the piezoelectric transducer inner chamber, and the temperature value is transmitted to described control unit, so that
Described control unit controls the temperature of the piezoelectric transducer according to the temperature value.
In an embodiment of the present invention, also include：
Muff, the muff is wrapped in the outer surface of the piezoelectric transducer, and the outer surface of the muff is covered
It is stamped insulating materials.
In an embodiment of the present invention, also include：
Pump, the pump is arranged in the escaping pipe, and the pump is used for the gas to be detected in the air inlet pipe
It is delivered to the inner chamber of the piezoelectric transducer.
Particle concentration detection means provided in an embodiment of the present invention, piezoelectricity is delivered to by air inlet pipe by gas to be detected
The inner chamber of sensor so that piezoelectric transducer produces piezoelectric signal, and this is pressed under the shock of the particulate matter of gas to be detected
Electric signal is sent to control unit so that control unit detection input piezoelectric transducer gas to be detected flow it
Afterwards, the pulse frequency that can be produced according to the flow and piezoelectric signal of gas to be detected determines the particulate matter in gas to be detected
Concentration, reduces the detection complexity of particle concentration, so as to improve the detection efficiency of particle concentration.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description does one and simply introduced, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of particle concentration detection means provided in an embodiment of the present invention；
Fig. 2 is the structural representation of another particle concentration detection means provided in an embodiment of the present invention；
Fig. 3 is the structural representation of another particle concentration detection means provided in an embodiment of the present invention.
Description of reference numerals：
10：Particle concentration detection means；
101：Air inlet pipe；
102：Piezoelectric transducer；
1021：Piezo-electric effect layer；
1022：Temperature sensor；
103：Control unit；
104：Escaping pipe；
1041：Aperture plate features；
10411：Pressure sensor；
1042：High efficiency particulate air filter；
1043：Pump.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Term " first ", " second ", " the 3rd " in description and claims of this specification and above-mentioned accompanying drawing, "
The (if present)s such as four " are for distinguishing similar object, without for describing specific order or precedence.It should manage
The data that solution is so used can be exchanged in the appropriate case, so as to embodiments of the invention described herein, for example can be with
Order in addition to those for illustrating or describing herein is implemented.In addition, term " comprising " and " having " and their times
What is deformed, it is intended that covering is non-exclusive to be included, for example, contain the process of series of steps or unit, method, system,
Product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly or for
The intrinsic other steps of these processes, method, product or equipment or unit.
It should be noted that these specific embodiments can be combined with each other below, for same or analogous concept
Or process may be repeated no more in certain embodiments.
Fig. 1 is a kind of structural representation of particle concentration detection means 10 provided in an embodiment of the present invention, certainly, this hair
Bright embodiment is simply illustrated by taking Fig. 1 as an example, but does not represent that present invention is limited only by this.It is shown in Figure 1, the particle
Thing concentration detection apparatus 10 can include：
Air inlet pipe 101, piezoelectric transducer 102 and control unit 103, wherein, the first end and piezoelectric sensing of air inlet pipe 101
The connection of device 102；Piezoelectric transducer 102 is connected with control unit 103.
Air inlet pipe 101 is used for the inner chamber that gas to be detected is delivered to piezoelectric transducer 102；Piezoelectric transducer 102 is used for
Under the shock of the particulate matter of gas to be detected, piezoelectric signal is produced, and piezoelectric signal is sent to control unit 103；Control is single
Member 103, the flow of the gas to be detected for detecting input piezoelectric transducer 102, and according to the flow and pressure of gas to be detected
The pulse frequency that electric signal is produced determines the concentration of the particulate matter in gas to be detected.
In actual application, when detecting the particle concentration of gas to be detected, can first pass through air inlet pipe 101 will treat
Detection gas is delivered to the inner chamber of piezoelectric transducer 102 so that shock of the piezoelectric transducer 102 in the particulate matter of gas to be detected
Under, piezoelectric signal is produced, and the piezoelectric signal is sent to control unit 103, so that control unit 103 is inputted in detection
After the flow of the gas to be detected of piezoelectric transducer 102, it can be produced according to the flow and piezoelectric signal of gas to be detected
Pulse frequency determines the concentration of the particulate matter in gas to be detected, reduces the detection complexity of particle concentration, so as to improve
The detection efficiency of particle concentration.
It is further, shown in Figure 2 on the basis of the corresponding embodiments of Fig. 1 based on the corresponding embodiments of Fig. 1,
Fig. 2 is the structural representation of another particle concentration detection means 10 provided in an embodiment of the present invention, shown in Figure 2,
The particle concentration detection means 10 can also include：
It is provided with piezoelectric transducer 102 on two corresponding faces in piezo-electric effect layer 1021, piezo-electric effect layer 1021
Metal level is coated with, electrode is formed.
Wherein, metal level can be layer gold, can be silver layer, or layers of copper, it is of course also possible to be other metals
Layer, can specifically be configured, the present invention is not particularly limited herein according to actual needs.Example, in the embodiment of the present invention
In, the metal level is layer gold.
In embodiments of the present invention, by being provided with piezo-electric effect layer 1021 in piezoelectric transducer 102, and in the piezoelectricity
Metal level is coated with two corresponding faces in effect layer 1021, electrode is formed, its object is to：As of gas to be detected
When grain thing is impinged upon on electrode, the resonant frequency of piezoelectric transducer 102 changes, when the particulate matter of gas to be detected leaves electricity
During pole, resonant frequency becomes intrinsic frequency again, so as to produce the piezoelectric signal brought by the change of resonant frequency, and the piezoelectricity is believed
Number transmit to control unit 103, so that flow pressure of the control unit 103 according to the gas to be detected of input piezoelectric transducer 102
The pulse frequency that electric signal is produced determines the concentration of the particulate matter in gas to be detected.
Optionally, the particle concentration detection means 10 also includes：
Escaping pipe 104, the first end of escaping pipe 104 is connected with piezoelectric transducer 102, and with the first end of air inlet pipe 101
Angle be the first predetermined angle, the first predetermined angle is more than or equal to 60 degree and is less than or equal to 120 degree.
In embodiments of the present invention, by setting escaping pipe 104, its object is to：It can make it that gas to be detected passes through
The escaping pipe 104 flows out the particle concentration detection means 10.In addition, by by the first end of escaping pipe 104 and air inlet pipe 101
The angle of first end be set to 60 degree to 120 degree of any value, its object is to：The particle in gas to be detected can be caused
Thing can preferably enter escaping pipe 104, and then flow from escaping pipe 104 after the electrode of piezoelectric transducer 102 is struck
Go out.In embodiments of the present invention, the first predetermined angle be 90 degree, certainly, the embodiment of the present invention be using the first predetermined angle as
Illustrated exemplified by 90 degree, but do not represent that present invention is limited only by this.
Optionally, the opening that the first end of air inlet pipe 101 is connected with piezoelectric transducer 102 is the first opening, escaping pipe 104
The opening that is connected with piezoelectric transducer 102 of first end be the second opening, the first opening is same opening with the second opening.
In embodiments of the present invention, by the way that the first opening is set into same opening with the second opening, its object is to：Can
Make it that gas to be detected enters the inner chamber of piezoelectric transducer 102 by the first opening, and the electrode in impact inner chamber it
Afterwards, directly it can be entered directly into by the second opening in escaping pipe 104, to avoid particulate matter from being trapped in piezoelectric transducer 102
Inner chamber in.
Optionally, the first opening is positioned at the centre position of the side wall of piezoelectric transducer 102, and piezoelectric transducer 102 is with going out
The angle of tracheae 104 is the second predetermined angle, and the second predetermined angle is more than or equal to 30 degree and less than or equal to 45 degree.
Example, in embodiments of the present invention, the second predetermined angle is 45 degree, certainly, and the embodiment of the present invention is with the
Two predetermined angles are to illustrate exemplified by 45 degree, but do not represent that present invention is limited only by this.
Further, shown in Figure 3, Fig. 3 is that another particle concentration provided in an embodiment of the present invention detects dress
Put 10 structural representation, the particle concentration detection means 10 can also include：
Aperture plate features 1041, aperture plate features 1041 are arranged in escaping pipe 104, and the two ends of aperture plate features 1041 are set respectively
It is equipped with pressure sensor 10411.
In embodiments of the present invention, by setting aperture plate features 1041 in escaping pipe 104, its object is to：It can lead to
The pressure value for crossing the pressure sensor 10411 at the two ends of aperture plate features 1041 calculates pressure difference, and it is dense according to pressure difference to monitor the particulate matter
Whether the flow of the gas to be detected in degree detection means 10 changes, so as to control the flow of gas to be detected so that should
The flow of gas to be detected in particle concentration detection means 10 is in stationary value.
Optionally, the particle concentration detection means 10 can also include：High efficiency particulate air filter 1042, high efficiency particulate air filter 1042
It is arranged in escaping pipe 104.
In embodiments of the present invention, by setting high efficiency particulate air filter 1042 in escaping pipe 104, its object is to：Can be with
So that gas to be detected passes through the high efficiency particulate air filter 1042 when flowing out particle concentration detection means 10 by escaping pipe 104
The particulate matter of gas to be detected is filtered, so as to reduce environmental pollution.
Optionally, the particle concentration detection means 10 can also include：Temperature sensor 1022, degree sensor is arranged on
In piezoelectric transducer 102, temperature sensor 1022 is used for the temperature value for detecting gas to be detected in the inner chamber of piezoelectric transducer 102,
And transmit temperature value to control unit 103, so that control unit 103 controls the temperature of piezoelectric transducer 102 according to temperature value.
Further, the particle concentration detection means 10 can also include：Muff, muff is wrapped in piezoelectric transducer 102
Outer surface, and muff outer surface covered with insulating materials.
Example, the temperature sensor 1022 can be thermocouple temperature sensor 1022, it is of course also possible to be other classes
The temperature sensor 1022 of type, can specifically be configured according to actual needs, here, the embodiment of the present invention is simply with thermocouple
Illustrated exemplified by temperature sensor 1022, but do not represent that present invention is limited only by this.
In embodiments of the present invention, by setting temperature sensor 1022, its object is to：When the temperature of gas to be detected
When higher, in order to prevent that the volatile materials in gas to be detected from condensing, the temperature of gas to be detected can be detected by sensor
Angle value, and temperature value is transmitted to control unit 103, so that control unit 103 controls piezoelectric transducer 102 according to temperature value
Temperature, for example, piezoelectric transducer 102 can be heated to a certain temperature (such as 250 DEG C), in addition, by piezoelectric transducer 102
Outer surface coats muff, can efficiently reduce radiation loss, and ensure that the internal temperature of piezoelectric transducer 102 is tried one's best uniformly.
Optionally, the particle concentration detection means 10 can also include：Pump 1043, pump 1043 is arranged on escaping pipe 104
On, pump 1043 is used for the inner chamber that the gas to be detected in air inlet pipe 101 is delivered to piezoelectric transducer 102.
It should be noted that in embodiments of the present invention, control unit 103 can pass through external communications units (such as serial ports
Communication etc.) communicated with slave computer (such as screen, report control platform) and host computer (such as PC).Slave computer or this host computer
In be composed of program, the parameters of particle concentration detection means 10 can be shown and be set, while particulate matter can be realized
Concentration is continuously measured, and is shown in real time in the form of numeral and change collection of illustrative plates, here, the present invention does not do specific discussion.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, performs the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of particle concentration detection means, it is characterised in that including：
Air inlet pipe, piezoelectric transducer and control unit, wherein, the first end of the air inlet pipe and the company of the piezoelectric transducer
It is logical；The piezoelectric transducer is connected with described control unit；
The air inlet pipe is used for the inner chamber that gas to be detected is delivered to the piezoelectric transducer；The piezoelectric transducer is used for
Under the shock of the particulate matter of the gas to be detected, piezoelectric signal is produced, and the piezoelectric signal is sent to described control unit；
Described control unit, the flow of the gas to be detected for detecting the input piezoelectric transducer, and according to the gas to be detected
The pulse frequency that the flow of body and the piezoelectric signal are produced determines the concentration of the particulate matter in the gas to be detected.
2. device according to claim 1, it is characterised in that
Gold is coated with two corresponding faces being provided with the piezoelectric transducer in piezo-electric effect layer, the piezo-electric effect layer
Belong to layer, form electrode.
3. device according to claim 1, it is characterised in that also include：
Escaping pipe, the first end of the escaping pipe is connected with the piezoelectric transducer, and with the folder of the first end of the air inlet pipe
Angle is the first predetermined angle, and first predetermined angle is more than or equal to 60 degree and less than or equal to 120 degree.
4. device according to claim 3, it is characterised in that
The opening that the first end of the air inlet pipe is connected with the piezoelectric transducer is the first opening, the first end of the escaping pipe
The opening connected with the piezoelectric transducer is the second opening, and first opening and the described second opening are same opening.
5. device according to claim 4, it is characterised in that
First opening is located at the centre position of the side wall of the piezoelectric transducer, and the piezoelectric transducer and the outlet
The angle of pipe is the second predetermined angle, and second predetermined angle is more than or equal to 30 degree and less than or equal to 45 degree.
6. device according to claim 3, it is characterised in that also include：
Aperture plate features, the aperture plate features are arranged in the escaping pipe, and the two ends of the aperture plate features are respectively arranged with pressure
Force snesor.
7. device according to claim 3, it is characterised in that also include：
High efficiency particulate air filter, the high efficiency particulate air filter is arranged in the escaping pipe.
8. device according to claim 1, it is characterised in that also include：
Temperature sensor, the degree sensor is arranged in the piezoelectric transducer, and the temperature sensor is used to detect described
The temperature value of gas to be detected in piezoelectric transducer inner chamber, and the temperature value is transmitted to described control unit, so that described
Control unit controls the temperature of the piezoelectric transducer according to the temperature value.
9. device according to claim 8, it is characterised in that also include：
Muff, the muff is wrapped in the outer surface of the piezoelectric transducer, and the muff outer surface covered with
Insulating materials.
10. device according to claim 3, it is characterised in that also include：
Pump, the pump is arranged in the escaping pipe, and the pump is used to convey the gas to be detected in the air inlet pipe
To the inner chamber of the piezoelectric transducer.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264246.3A CN106940286A (en) | 2017-04-21 | 2017-04-21 | Particle concentration detection means |
| PCT/CN2018/073649 WO2018192283A1 (en) | 2017-04-21 | 2018-01-22 | Particulate matter concentration measurement apparatus |
| GB1900699.8A GB2570807A (en) | 2017-04-21 | 2018-01-22 | Particulate matter concentration measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264246.3A CN106940286A (en) | 2017-04-21 | 2017-04-21 | Particle concentration detection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106940286A true CN106940286A (en) | 2017-07-11 |
Family
ID=59464700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710264246.3A Pending CN106940286A (en) | 2017-04-21 | 2017-04-21 | Particle concentration detection means |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106940286A (en) |
| GB (1) | GB2570807A (en) |
| WO (1) | WO2018192283A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018192283A1 (en) * | 2017-04-21 | 2018-10-25 | 华津航（武汉）科技有限公司 | Particulate matter concentration measurement apparatus |
| CN109916783A (en) * | 2019-03-14 | 2019-06-21 | 北京航空航天大学 | Sonar particulate matter detecting devices |
| CN108828334B (en) * | 2018-04-09 | 2020-08-11 | 中国矿业大学 | Flat plate type particle charge quantity measuring device and method utilizing charge neutralization |
| CN112296022A (en) * | 2019-07-30 | 2021-02-02 | 理光高科技(深圳)有限公司 | Dry type cleaning device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693420B (en) * | 2020-06-23 | 2022-06-14 | 河北正态环境检测有限公司 | Automatic monitoring and collecting device for atmospheric particulate matters and application method thereof |
| CN113624652A (en) * | 2021-08-16 | 2021-11-09 | 济宁华源热电有限公司 | Boiler flue gas monitoring device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3842791A (en) * | 1970-05-14 | 1974-10-22 | Brey R De | Particle flow monitor |
| US3989311A (en) * | 1970-05-14 | 1976-11-02 | Debrey Robert J | Particle monitoring apparatus |
| US4114557A (en) * | 1970-05-14 | 1978-09-19 | Brey Robert J De | Particle monitoring system |
| CN101231228A (en) * | 2007-01-23 | 2008-07-30 | 上海理工大学 | Method and apparatus for on-line monitoring atmosphere particle concentration using piezoelectric crystal |
| CN102608005A (en) * | 2012-03-19 | 2012-07-25 | 华北电力大学 | Piezoelectric sensor-based on-line measurement device and method for particle size distribution |
| CN102854099A (en) * | 2012-09-17 | 2013-01-02 | 华北电力大学 | Automatic online detecting method for large-size particles in pneumatic conveying pipeline |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940286A (en) * | 2017-04-21 | 2017-07-11 | 北京航空航天大学 | Particle concentration detection means |
-
2017
- 2017-04-21 CN CN201710264246.3A patent/CN106940286A/en active Pending
-
2018
- 2018-01-22 GB GB1900699.8A patent/GB2570807A/en not_active Withdrawn
- 2018-01-22 WO PCT/CN2018/073649 patent/WO2018192283A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3842791A (en) * | 1970-05-14 | 1974-10-22 | Brey R De | Particle flow monitor |
| US3989311A (en) * | 1970-05-14 | 1976-11-02 | Debrey Robert J | Particle monitoring apparatus |
| US4114557A (en) * | 1970-05-14 | 1978-09-19 | Brey Robert J De | Particle monitoring system |
| CN101231228A (en) * | 2007-01-23 | 2008-07-30 | 上海理工大学 | Method and apparatus for on-line monitoring atmosphere particle concentration using piezoelectric crystal |
| CN102608005A (en) * | 2012-03-19 | 2012-07-25 | 华北电力大学 | Piezoelectric sensor-based on-line measurement device and method for particle size distribution |
| CN102854099A (en) * | 2012-09-17 | 2013-01-02 | 华北电力大学 | Automatic online detecting method for large-size particles in pneumatic conveying pipeline |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018192283A1 (en) * | 2017-04-21 | 2018-10-25 | 华津航（武汉）科技有限公司 | Particulate matter concentration measurement apparatus |
| GB2570807A (en) * | 2017-04-21 | 2019-08-07 | Huajinhang Wuhan Tech Co Ltd | Particulate matter concentration measurement apparatus |
| CN108828334B (en) * | 2018-04-09 | 2020-08-11 | 中国矿业大学 | Flat plate type particle charge quantity measuring device and method utilizing charge neutralization |
| CN109916783A (en) * | 2019-03-14 | 2019-06-21 | 北京航空航天大学 | Sonar particulate matter detecting devices |
| CN112296022A (en) * | 2019-07-30 | 2021-02-02 | 理光高科技(深圳)有限公司 | Dry type cleaning device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201900699D0 (en) | 2019-03-06 |
| GB2570807A (en) | 2019-08-07 |
| WO2018192283A1 (en) | 2018-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106940286A (en) | Particle concentration detection means | |
| CN107167402A (en) | The method and system sensed for exhaust particulate matter | |
| JP6505082B2 (en) | Particle counting device | |
| Marra et al. | Monitor for detecting and assessing exposure to airborne nanoparticles | |
| TW201027060A (en) | Sensor for sensing airborne particles | |
| CN110059726A (en) | The threat detection method and device of industrial control system | |
| CN112304820A (en) | Fluid composition sensor apparatus and method of use | |
| CN107631966B (en) | Method and system for exhaust particulate matter sensing | |
| CN107741392A (en) | A kind of mouth mask protection effect method for real-timely testing synchronous with load respiratory resistance | |
| WO2009074910A1 (en) | Device for characterizing a size distribution of electrically-charged airborne particles in an air flow | |
| CN108303962A (en) | A kind of ultrasonic fusing data monitoring device and method | |
| Dhaniyala et al. | Instruments based on electrical detection of aerosols | |
| CN103020269B (en) | A kind of method of data verification and device | |
| CN104181084B (en) | Aerosol sensor | |
| CN107271350A (en) | A kind of filter for installation detects workbench | |
| Yuk et al. | On the design of particle filters inspired by animal noses | |
| CN113627289B (en) | Power equipment identification method and device based on deep learning | |
| CN204269770U (en) | A kind of chip security detection system | |
| KR101668469B1 (en) | Device for characterizing the evolution over time of a size distribution of electrically-charged airborne particles in an airflow | |
| CN107300518A (en) | The method and system sensed for exhaust particulate matter | |
| CN204479442U (en) | The on-line measuring device of gas pipe line endoparticle and drop | |
| CN107339132A (en) | Method and system for exhaust particulate matter sensing | |
| EP3368889B1 (en) | A charging unit for a particle monitoring apparatus, and a particle monitoring apparatus | |
| CN106908421A (en) | A kind of multichannel dangerous substance detection method and detection means | |
| Yang et al. | A standardized ics network data processing flow with generative model in anomaly detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180427 Address after: 430223 -1, No. 13, Huazhong University of Science and Technology, East Lake New Technology Development Zone, Wuhan, Hubei, 3, No. 2, R & D building, 1, R & D building, modern service center, Huazhong University of Science and Technology park. Applicant after: Tianjin Airlines (Wuhan) Technology Co., Ltd. Address before: 100191 Beijing Haidian District Xueyuan Road 37 new main building of Beihang University D315 Applicant before: Beihang University |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170711 |