CN117705900A - Multi-parameter coupled multi-pollutant distinguishing and detecting device and manufacturing method thereof - Google Patents
Multi-parameter coupled multi-pollutant distinguishing and detecting device and manufacturing method thereof Download PDFInfo
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- CN117705900A CN117705900A CN202311713039.3A CN202311713039A CN117705900A CN 117705900 A CN117705900 A CN 117705900A CN 202311713039 A CN202311713039 A CN 202311713039A CN 117705900 A CN117705900 A CN 117705900A
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- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 92
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 230000006698 induction Effects 0.000 claims abstract description 31
- 239000002923 metal particle Substances 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 15
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 13
- 231100000719 pollutant Toxicity 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 22
- 239000011521 glass Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 9
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- -1 polydimethylsiloxane Polymers 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 10
- 239000003990 capacitor Substances 0.000 abstract description 3
- 238000012806 monitoring device Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/226—Construction of measuring vessels; Electrodes therefor
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Abstract
The invention provides a multi-parameter coupled multi-pollutant distinguishing and detecting device and a manufacturing method thereof. The device is characterized in that a sensing unit is arranged in a microfluidic chip, a thin steel sheet is arranged opposite to a planar induction coil, a detection channel is arranged between the thin steel sheet and the planar induction coil, and when oil with various pollutants passes through the detection channel, the planar induction coil outputs an induction signal to realize induction parameter detection; the planar inductance coil and the thin steel sheet form two electrode plates of the capacitor, and when pollutant particles pass through the electrode plates, capacitance signals are output, so that capacitance parameter detection is realized. According to the difference of the inductance signal and the capacitance signal, the pollutants such as ferromagnetic metal particles, nonferromagnetic metal particles, water particles, bubbles and the like can be detected in a distinguishing mode. The technical scheme of the invention solves the technical problem that the multi-pollutant distinguishing detection cannot be realized in the existing oil liquid state monitoring device.
Description
Technical Field
The invention relates to the technical field of oil liquid state monitoring, in particular to a multi-parameter coupling multi-pollutant distinguishing and detecting device and a manufacturing method thereof.
Background
The oil plays roles in power transmission, lubrication and the like in the machine, and is widely applied to mechanical equipment. Contaminants in oil mainly include ferromagnetic metal particles, non-ferromagnetic metal particles, water, and air bubbles. When the quantity and the diameter of metal particles in the oil are too large, the abrasion of mechanical devices can be accelerated, and the service life of the mechanical devices is reduced. The water in the oil accelerates the oxidation and corrosion processes of mechanical equipment, can deteriorate the oil, and weakens various performances of the oil. Air bubbles in the oil liquid can generate cavitation and cavitation phenomena, and vibration and noise can also be generated, so that the service life of mechanical devices is shortened. Therefore, oil condition monitoring is of great importance to fault monitoring and prevention of mechanical equipment.
At present, the monitoring method of the oil particle pollutants mainly comprises an optical detection method, an acoustic detection method, an inductance detection method, a capacitance detection method and the like, and the single method can only monitor particles with one or two properties and cannot simultaneously distinguish and detect various pollutants.
Disclosure of Invention
According to the technical problem of multi-pollutant distinguishing and detecting in the existing oil liquid state monitoring device, the multi-parameter coupling multi-pollutant distinguishing and detecting device and the manufacturing method thereof are provided. The device is characterized in that a sensing unit is arranged in a microfluidic chip, a thin steel sheet is arranged opposite to a planar induction coil, a detection channel is arranged between the thin steel sheet and the planar induction coil, and when oil with various pollutants passes through the detection channel, the planar induction coil outputs an induction signal to realize induction parameter detection; the planar inductance coil and the thin steel sheet form two electrode plates of the capacitor, and when pollutant particles pass through the electrode plates, capacitance signals are output, so that capacitance parameter detection is realized. According to the difference of the inductance signal and the capacitance signal, the pollutants such as ferromagnetic metal particles, nonferromagnetic metal particles, water particles, bubbles and the like can be detected in a distinguishing mode.
The invention adopts the following technical means:
a multiparameter coupled multipollutant differential detection device comprising: a microfluidic detection chip, an inductance detection unit, a capacitance detection unit, and an excitation-detection unit, wherein:
the microfluidic detection chip comprises a glass substrate and a chip main body arranged on the glass substrate; wherein:
the chip main body comprises a micro-channel which is arranged on one end of the chip main body and provided with a micro-channel inlet and the other end of the chip main body and provided with a micro-channel outlet, and a sensing unit; the sensing unit comprises a planar inductance coil and a thin steel sheet; the planar inductance coil and the thin steel sheet are arranged opposite to each other; the micro-flow channel is clung to one side of the planar inductance coil and clung to one side of the thin steel sheet;
the inductance detection unit and the capacitance detection unit are respectively connected with the thin steel sheet and the plane inductance coil through insulated wires;
the excitation-detection unit is connected with the inductance detection unit and the capacitance detection unit through insulated wires.
Further, the inductance detection unit performs inductance detection by connecting the planar inductance coil, and the capacitance detection unit performs capacitance detection by connecting the planar inductance coil and the thin steel sheet; the excitation-detection unit applies alternating current excitation to the planar induction coil and the thin steel sheet respectively, and detects an inductance signal generated by the planar induction coil and a capacitance signal generated by the planar induction coil and the thin steel sheet.
Further, when the oil liquid with metal particles, water particles and bubble pollutants passes through the sensing unit by the micro-flow channel, inductance detection and capacitance detection are carried out, the excitation-detection unit excites alternating current with preset voltage and frequency for the plane inductance coil and the thin steel sheet, meanwhile, inductance change of the plane inductance coil and capacitance change between the plane inductance coil and the thin steel sheet can be detected, and collection of inductance signals and capacitance signals of the sensing unit is completed, so that differentiated detection of ferromagnetic metal particles, nonferromagnetic metal particles, water particles and bubbles in the oil liquid is realized.
Further, the micro flow channel passes between the planar inductor and the thin steel sheet, and is at the center of the planar inductor.
Further, the diameter of the thin steel sheet is 3-8 mm, and the height is 0.07-1 mm; the diameter of the micro flow channel is 0.1-2 mm.
Further, the sheet steel also includes other non-ferromagnetic materials.
The invention also provides a manufacturing method of the multi-pollutant distinguishing and detecting device based on the multi-parameter coupling, which comprises the following steps:
s1, fixing a micro-channel die, a planar inductance coil and a thin steel sheet on a glass substrate according to a set position;
s2, pouring a model material into the glass substrate, wherein the planar induction coil and the lead wires of the thin steel sheet are arranged outside the model material, so that the planar induction coil and the lead wires of the thin steel sheet are not poured by the model material;
s3, placing the micro-channel mold for pouring the model material into an oven, and baking at 80 ℃ for 1 hour to solidify the model material;
and S4, extracting the micro-channel die from the heated and solidified model material, and punching holes at two ends of the micro-channel by using a puncher to form a micro-channel inlet and a micro-channel outlet.
Further, the model material is polydimethylsiloxane.
Compared with the prior art, the invention has the following advantages:
according to the multi-parameter coupled multi-pollutant distinguishing and detecting device provided by the invention, a thin steel sheet is arranged opposite to the planar induction coil, so that induction detection and capacitance detection can be simultaneously carried out, and ferromagnetic metal particles, nonferromagnetic metal particles, water particles and bubbles in oil liquid can be distinguished and detected. Has important significance for preventing and diagnosing faults of ship machine equipment.
Based on the reasons, the invention can be widely popularized in the fields of oil liquid state monitoring and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a block diagram of a multi-contaminant separation detection device according to the present invention.
FIG. 2 is a top view of a sensor unit of the present invention.
FIG. 3 is a side view of a sensing unit of the present invention.
Fig. 4 is a schematic diagram of inductance detection according to the present invention.
In the figure: 1. a glass substrate; 2. a modeling material; 3. a microchannel inlet; 4. a microchannel outlet; 5. a sensing unit; 6. a microchannel; 7. a planar inductor; 8. and (3) a thin steel sheet.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
As shown in fig. 1, the present invention provides a multiparameter coupled multipollutant distinguishing detection device, comprising: a microfluidic detection chip, an inductance detection unit, a capacitance detection unit, and an excitation-detection unit, wherein:
the microfluidic detection chip comprises a glass substrate 1 and a chip main body arranged on the glass substrate 1; wherein:
the chip main body comprises a micro-channel 6 which is arranged on one end of the chip main body and provided with a micro-channel inlet 3 and a micro-channel outlet 4 at the other end, and a sensing unit 5; the oil with various particle pollutants is driven into the detection device from the micro-channel inlet 3, flows through the sensing unit 5 through the micro-channel 6, and then flows out from the micro-channel outlet 4.
As shown in fig. 2 and 3, the sensing unit 5 includes a planar inductor 7 and a thin steel sheet 8; the planar inductance coil 7 and the thin steel sheet 8 are arranged opposite to each other; the micro-channel 6 is clung to one side of the planar inductance coil 7 and clung to one side of the thin steel sheet 8; the inductance detection unit and the capacitance detection unit are respectively connected with the thin steel sheet 8 and the plane inductance coil 7 through insulated wires; the excitation-detection unit is connected with the inductance detection unit and the capacitance detection unit through insulated wires.
In specific implementation, as a preferred embodiment of the present invention, the inductance detection unit performs inductance detection by connecting the planar inductance coil 7, and the capacitance detection unit performs capacitance detection by connecting the planar inductance coil 7 and the thin steel sheet 8; the excitation-detection unit applies alternating current excitation to the planar inductor 7 and the thin steel sheet 8, respectively, and detects an inductance signal generated by the planar inductor 7 and a capacitance signal generated by the planar inductor 7 and the thin steel sheet 8. The detection principle is as follows:
when the oil liquid with metal particles, water particles and bubble pollutants passes through the sensing unit 5 by the micro-flow channel 6, inductance detection and capacitance detection are carried out, the excitation-detection unit excites alternating current with preset voltage and frequency for the plane inductance coil 7 and the thin steel sheet 8, meanwhile, inductance change of the plane inductance coil 7 and capacitance change between the plane inductance coil 7 and the thin steel sheet 8 can be detected, and collection of inductance signals and capacitance signals of the sensing unit 5 is completed, so that distinguishing detection of ferromagnetic metal particles, nonferromagnetic metal particles, water particles and bubbles in the oil liquid is realized.
In particular, as a preferred embodiment of the present invention, with continued reference to fig. 2, the micro flow channel 6 passes between the planar inductor 7 and the thin steel sheet 8, and is at the center of the planar inductor 7.
In specific implementation, as a preferred embodiment of the invention, the planar inductance coil 7 is formed by winding enamelled wires, the inner diameter of the coil is 0.5-2 mm, the diameter of the enamelled wires is 0.05-0.2 mm, and the number of turns is 10-300 turns; the thin steel sheet 8 is a circular thin steel sheet which is placed opposite to the planar induction coil 7, and the diameter of the circular thin steel sheet is 1-10 mm. The round sheet steel may be replaced by other non-ferromagnetic metallic materials. The diameter of the micro-channel 6 is 0.1-2 mm;
in specific implementation, as shown in fig. 4, when the inductance detection and the capacitance detection are performed, an excitation-detection unit is connected with the planar inductance coil 7, the excitation-detection unit applies high-frequency alternating current of 2-10v and 1-2MHz to the planar inductance coil 7, and the inductance signal of the planar inductance coil 7 is measured; the excitation-detection unit applies a predetermined voltage and frequency to the planar inductor 7 and the thin steel sheet 8, and detects a change in capacitance signal of a capacitor formed by the planar inductor 7 and the thin steel sheet 8. When ferromagnetic metal particles pass through the sensing unit 5, a forward inductance pulse signal is generated due to magnetization, and a forward capacitance pulse signal is also generated; when non-ferromagnetic metal particles pass through the sensing unit 5, a negative inductance pulse signal and a positive capacitance pulse signal are generated due to the eddy current effect; when water particles pass through the sensing unit 5, almost no inductance signal change is generated, but a positive capacitance pulse signal is generated; when the air bubble passes through the sensing unit 5, almost no inductance signal change is generated, but a negative capacitance pulse signal is generated; thereby realizing the distinguishing and detection of ferromagnetic metal particles and non-ferromagnetic metal particles in oil.
The invention provides a manufacturing method of a multiparameter coupled multipollutant distinguishing detection chip, which is realized by using the multiparameter coupled multipollutant distinguishing detection device and comprises the following steps of:
s1, fixing a micro-channel die, a planar induction coil 7 and a thin steel sheet 8 on a glass substrate 1 according to a preset position;
s2, pouring a model material 2 into the glass substrate 1, wherein the planar induction coil 7 and the lead wires of the thin steel sheet 8 are arranged outside the model material 2 so as not to be poured by the model material 2;
s3, placing the micro-channel mold for pouring the model material 2 in an oven, and baking at 80 ℃ for 1 hour to solidify the model material 2;
s4, extracting the micro-channel mold from the heated and solidified model material 2, and punching holes at two ends of the micro-channel 6 by using a puncher to form a micro-channel inlet 3 and a micro-channel outlet 4.
In specific embodiments, the mold material 2 is polydimethylsiloxane as a preferred embodiment of the present invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. A multiparameter coupled multipollutant differential detection device, comprising: a microfluidic detection chip, an inductance detection unit, a capacitance detection unit, and an excitation-detection unit, wherein:
the microfluidic detection chip comprises a glass substrate (1) and a chip main body arranged on the glass substrate (1); wherein:
the chip main body comprises a micro-channel (6) which is arranged on one end of the chip main body and provided with a micro-channel inlet (3) and the other end of the chip main body and provided with a micro-channel outlet (4), and a sensing unit (5); the sensing unit (5) comprises a planar inductance coil (7) and a thin steel sheet (8); the plane inductance coil (7) and the thin steel sheet (8) are arranged opposite to each other; the micro-channel (6) is clung to one side of the planar inductance coil (7) and clung to one side of the thin steel sheet (8);
the inductance detection unit and the capacitance detection unit are respectively connected with the thin steel sheet (8) and the plane inductance coil (7) through insulated wires;
the excitation-detection unit is connected with the inductance detection unit and the capacitance detection unit through insulated wires.
2. The multiparameter-coupled multipollutant distinguishing detection device according to claim 1, wherein the inductance detection unit performs inductance detection by connecting a planar inductance coil (7), and the capacitance detection unit performs capacitance detection by connecting the planar inductance coil (7) and a thin steel sheet (8); the excitation-detection unit applies alternating current excitation to the planar induction coil (7) and the thin steel sheet (8) respectively, and detects an induction signal generated by the planar induction coil (7) and a capacitance signal generated by the planar induction coil (7) and the thin steel sheet (8).
3. The multiparameter-coupled multi-pollutant distinguishing and detecting device according to claim 1, characterized in that when oil with metal particles, water particles and bubble pollutants passes through the sensing unit (5) by the micro-channel (6), inductance detection and capacitance detection are performed, the excitation-detection unit excites alternating current with given voltage and frequency to the planar induction coil (7) and the thin steel sheet (8), and meanwhile inductance change of the planar induction coil (7) and capacitance change between the planar induction coil (7) and the thin steel sheet (8) can be detected, and collection of inductance signals and capacitance signals of the sensing unit (5) is completed, so that distinguishing and detection of ferromagnetic metal particles, nonferromagnetic metal particles, water particles and bubbles in the oil is realized.
4. The multiparameter coupled multipollutant distinction detection device according to claim 1, characterized in that the microchannel (6) passes between the planar induction coil (7) and a thin steel sheet (8) and is at the centre of the planar induction coil (7).
5. The multiparameter coupled multipollutant distinction detection device according to claim 1, characterized in that the thin steel sheet (8) has a diameter of 3-8 mm and a height of 0.07-1 mm; the diameter of the micro flow channel (6) is 0.1-2 mm.
6. Multiparameter coupled multipollutant discrimination detection device as defined in claim 1, wherein said sheet of steel (8) further comprises other non-ferromagnetic material.
7. A method of manufacturing a multiparameter coupled multipollutant differential detection device as defined in any one of claims 1 to 6, comprising:
s1, fixing a micro-channel die, a planar induction coil (7) and a thin steel sheet (8) on a glass substrate (1) according to a preset position;
s2, pouring a model material (2) into the glass substrate (1), wherein the lead wires of the planar induction coil (7) and the thin steel sheet (8) are arranged outside the model material (2) so as not to be poured by the model material (2);
s3, placing the micro-channel mold for pouring the model material (2) in an oven, and baking at 80 ℃ for 1 hour to solidify the model material (2);
s4, extracting the micro-channel mold from the heated and solidified model material (2), and punching two ends of the micro-channel (6) by using a puncher to form a micro-channel inlet (3) and a micro-channel outlet (4).
8. The method of manufacturing according to claim 7, characterized in that the model material (2) is polydimethylsiloxane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311713039.3A CN117705900A (en) | 2023-12-13 | 2023-12-13 | Multi-parameter coupled multi-pollutant distinguishing and detecting device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311713039.3A CN117705900A (en) | 2023-12-13 | 2023-12-13 | Multi-parameter coupled multi-pollutant distinguishing and detecting device and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN117705900A true CN117705900A (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311713039.3A Pending CN117705900A (en) | 2023-12-13 | 2023-12-13 | Multi-parameter coupled multi-pollutant distinguishing and detecting device and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117705900A (en) |
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2023
- 2023-12-13 CN CN202311713039.3A patent/CN117705900A/en active Pending
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