CN112986343B - High magnetic conductive material inductance-electric capacity binary channels fluid detection device - Google Patents
High magnetic conductive material inductance-electric capacity binary channels fluid detection device Download PDFInfo
- Publication number
- CN112986343B CN112986343B CN202110163987.9A CN202110163987A CN112986343B CN 112986343 B CN112986343 B CN 112986343B CN 202110163987 A CN202110163987 A CN 202110163987A CN 112986343 B CN112986343 B CN 112986343B
- Authority
- CN
- China
- Prior art keywords
- inductance
- capacitance
- detection
- planar coil
- channel
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
Abstract
The invention provides a high-permeability material inductance-capacitance double-channel oil detection device which comprises an excitation-acquisition unit and a detection unit connected with the excitation-acquisition unit through an insulated wire, wherein the detection unit comprises a capacitance detection unit and an inductance detection unit, and the capacitance detection unit comprises a capacitance detection runner, a left electrode and a right electrode which are oppositely arranged on two sides of the capacitance detection runner; the inductance detection unit comprises an inductance detection flow channel, a first planar coil, a second planar coil, a first high permeability magnetic alloy and a second high permeability magnetic alloy; the first high magnetic conductive alloy is provided with a first dovetail groove, and the second high magnetic conductive alloy is provided with a second dovetail groove; the device not only adopts a pair of high-permeability alloys to increase the magnetic field intensity in the sensing unit, but also designs the opening of the high-permeability alloys at the flow passage into a dovetail groove structure polymerization magnetic field to form the high-intensity polymerization magnetic field, thereby improving the detection precision. And the high-conductivity magnetic alloy is used as a capacitor plate for capacitance detection, so that the detection precision of a capacitance detection mode is improved.
Description
Technical Field
The invention relates to the technical field of oil system fault detection, in particular to a high-permeability material inductance-capacitance double-channel oil detection device.
Background
Solid particles in oil of a mechanical system contain abundant tribological information including components, shapes, sizes, quantities and the like, the information can reflect the running condition of equipment, and the method has very important function on judging the abrasion part, the abrasion type, the abrasion degree and the corrosion degree of the equipment. The tribology information of the abrasive particles is analyzed, and the mechanism which is abnormally abraded and the polluted oil liquid are replaced in time, so that more serious loss can be effectively avoided.
The current oil detection technology can be divided into off-line detection and on-line detection. Off-line detection, namely laboratory oil sample submission, has the defects of multiple detection procedures, long submission period and poor timeliness. The on-line detection is mainly classified into an ultrasonic detection method, an optical detection method, an inductance detection method, and a capacitance detection method. The ultrasonic detection method can distinguish metal particles from bubbles, but cannot distinguish ferromagnetic particles from non-ferromagnetic particles, and is greatly influenced by external temperature, noise and other environmental factors; the optical detection method has high detection precision, but the detection result is easily influenced by the definition and permeability of the oil liquid; the inductive detection method can distinguish ferromagnetic particles from non-ferromagnetic particles, but has low detection precision; according to the traditional capacitance detection method, water drops and bubbles in oil can be distinguished and detected according to different dielectric constants between polar plates, but metal particles cannot be distinguished and detected.
Disclosure of Invention
According to the technical problem that the detection precision of the oil detection sensor is limited, the inductance-capacitance double-channel oil detection device made of the high-permeability material is provided. The device not only adopts a pair of high-permeability alloys to increase the magnetic field intensity in the sensing unit, but also designs the opening of the high-permeability alloys at the flow passage into a dovetail groove structure polymerization magnetic field to form the high-intensity polymerization magnetic field, thereby improving the detection precision. And the high-conductivity magnetic alloy is used as a capacitor plate for capacitance detection, so that the detection precision of a capacitance detection mode is improved.
The technical means adopted by the invention are as follows:
the high-permeability material inductance-capacitance double-channel oil detection device comprises an excitation-acquisition unit and a detection unit connected with the excitation-acquisition unit through an insulated wire; the detection unit comprises a capacitance detection unit and an inductance detection unit, wherein:
the capacitance detection unit comprises a capacitance detection flow channel, a left electrode and a right electrode which are oppositely arranged at two sides of the capacitance detection flow channel;
the inductance detection unit comprises an inductance detection flow channel, a first planar coil, a second planar coil, a first high magnetic conductive alloy and a second high magnetic conductive alloy; the first planar coil comprises a first binding surface and a first non-binding surface; the second planar coil comprises a second binding surface and a second non-binding surface; the first binding surface is tightly attached to the second binding surface, the first non-binding surface is tightly attached to the first high-permeability alloy, and the second non-binding surface is tightly attached to the second high-permeability alloy; the first high magnetic conductive alloy is provided with a first dovetail groove, and the second high magnetic conductive alloy is provided with a second dovetail groove; the inductance detection flow channel penetrates through the first planar coil, the second planar coil, the first dovetail groove and the second dovetail groove;
the left electrode and the right electrode of the capacitance detection unit are respectively connected with the positive electrode and the negative electrode of the excitation-collection unit through insulated wires; and two end leads of the first planar coil and the second planar coil of the inductance detection unit are respectively connected with the positive electrode and the negative electrode of the excitation-acquisition unit through insulated wires to form a detection excitation and data acquisition loop.
Further, the minimum slits of the first dovetail groove and the second dovetail groove are tangent to the inductance detection flow channel.
Furthermore, one end of the capacitance detection flow channel is connected with one end of the inductance detection flow channel, and the connected port is a channel inlet; the other end of the capacitance detection flow channel is connected with the other end of the inductance detection flow channel, and a connected port is a channel outlet.
Further, the capacitance detection unit further comprises an electrode fixing bracket for fixing the left electrode and the right electrode; the inductance detection unit further comprises a coil fixing support for fixing the first planar coil, the second planar coil, the first high magnetic conductive alloy and the second high magnetic conductive alloy.
Furthermore, the high-permeability material double-channel oil detection device further comprises a PDMS matrix, and the detection unit is fixed inside the PDMS matrix.
Further, the inner diameters of the capacitance detection flow channel and the inductance detection flow channel are both 300 micrometers.
Furthermore, the first planar coil and the second planar coil are formed by winding enameled wires, a single planar coil is wound into three layers, the diameter of the coil is 70 micrometers, the inner diameter of the coil is 300 micrometers, and the number of turns is 120 turns.
Further, the left electrode and the right electrode are made of materials including permalloy, silicon steel sheets and magnetic nanoparticles.
Further, the first and second mu-metal comprise permalloy, silicon steel sheets and magnetic nano materials.
Furthermore, the excitation-collection unit is an impedance analyzer, and the capacitance detection unit and the inductance detection unit are electrically excited by high-frequency alternating current of 2V and 2 MHz.
Compared with the prior art, the invention has the following advantages:
according to the high-permeability material inductance-capacitance double-channel oil detection device, the permalloy sheets are respectively arranged outside the opposite coils on the two sides of the microfluidic channel, and the magnetic field in the detection area is gathered, so that the magnetic field intensity detected between the two planar coils is increased, the detection precision of an inductance detection mode is improved, and smaller metal particle pollutants can be detected; meanwhile, the high-conductivity material is used as a capacitor plate, so that the capacitance detection capability is greatly improved, the signal-to-noise ratio of water drops and bubbles is increased, and the detection precision of the water drops and bubbles in the oil is improved.
Based on the reason, the invention can be widely popularized in the fields of oil system fault detection 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 needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a detecting device according to the present invention.
FIG. 2 is a schematic structural diagram of a capacitance detecting unit according to the present invention.
Fig. 3 is a schematic structural diagram of an inductance detecting unit according to the present invention.
In the figure: 1. an excitation-collection unit; 2. a capacitance detection flow channel; 3. a left electrode; 4. a right electrode; 5. an inductance detection flow channel; 6. a first planar coil; 7. a second planar coil; 8. a first high permeability alloy; 9. a second high permeability alloy; 10. a channel inlet; 11. a channel outlet; 12. an electrode fixing bracket; 13. a coil fixing bracket; 14. a PDMS matrix.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present 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 invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the 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. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship 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 of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1, the invention provides an inductance-capacitance oil contamination synchronous detection device, which comprises an excitation-collection unit 1 and a detection unit connected with the excitation-collection unit 1 through an insulated wire; the detecting element includes electric capacity detecting element and inductance detecting element, wherein:
as shown in fig. 2, the capacitance detection unit includes a capacitance detection flow channel 2, a left electrode 3 and a right electrode 4 which are opposed to both sides of the capacitance detection flow channel 2; in specific implementation, as a preferred embodiment of the present invention, the material of the left electrode 3 and the right electrode 4 includes permalloy, silicon steel sheets, and magnetic nanoparticles.
As shown in fig. 3, the inductance detecting unit includes an inductance detecting flow channel 5, a first planar coil 6, a second planar coil 7, a first high permeability alloy 8 and a second high permeability alloy 9; wherein, the first planar coil 6 comprises a first binding surface and a first non-binding surface; the second planar coil 7 comprises a second binding surface and a second non-binding surface; the first binding surface is tightly attached to the second binding surface, the first non-binding surface is tightly attached to the first high permeability magnetic alloy 8, and the second non-binding surface is tightly attached to the second high permeability magnetic alloy 9; a first dovetail groove is formed in the first high magnetic conductive alloy 8, and a second dovetail groove is formed in the second high magnetic conductive alloy 9; the inductance detection flow channel 5 passes through the first planar coil 6, the second planar coil 7, the first dovetail groove and the second dovetail groove; the minimum slits of the first dovetail groove and the second dovetail groove are tangent to the inductance detection flow channel 5. In specific implementation, as a preferred embodiment of the present invention, the first mu-metal 8 and the second mu-metal 9 include permalloy, silicon steel sheets, and magnetic nano-materials. The high-permeability material is placed close to the coils, the magnetic field between the two planar coils can be enhanced, the dovetail groove structure can form magnetic field aggregation, the magnetic flux density at the position of the minimum slit is maximum, and the area is used as a detection area, so that the inductance signal-to-noise ratio can be increased, and the accuracy of the inductance type oil detection device is improved.
In specific implementation, as a preferred embodiment of the present invention, the first planar coil 6 and the second planar coil 7 are both formed by winding enameled wires, and a single planar coil is wound in three layers, wherein the diameter of the coil is 70 micrometers, the inner diameter of the coil is 300 micrometers, and the number of turns is 120 turns. The two planar coils are spaced 300 microns apart, i.e., the distance of one microfluidic channel.
With continued reference to fig. 1, one end of the capacitance detection flow channel 2 is connected to one end of the inductance detection flow channel 5, and the connected port is a channel inlet 10; the other end of the capacitance detection flow channel 2 is connected with the other end of the inductance detection flow channel 5, and the connected port is a channel outlet 11.
In further detail, referring to fig. 1, as a preferred embodiment of the present invention, the capacitive sensing unit further includes an electrode fixing bracket 12 for fixing the left electrode 3 and the right electrode 4; the inductance detection unit further comprises a coil fixing support 13 for fixing the first planar coil 6, the second planar coil 7, the first high permeability alloy 8 and the second high permeability alloy 9.
In specific implementation, as a preferred embodiment of the present invention, with reference to fig. 1, the high-permeability material dual-channel oil detection device further includes a PDMS matrix 14, and the detection unit is fixed inside the PDMS matrix 14.
With continued reference to fig. 1, a left electrode 3 and a right electrode 4 of the capacitance detection unit are respectively connected with the positive electrode and the negative electrode of the excitation-collection unit 1 through insulated wires; two end leads of a first planar coil 6 and a second planar coil 7 of the inductance detection unit are respectively connected with the positive electrode and the negative electrode of the excitation-acquisition unit 1 through insulated wires to form a detection excitation and data acquisition loop.
In specific implementation, as a preferred embodiment of the present invention, the excitation-collection unit 1 is an impedance analyzer, and the capacitance detection unit and the inductance detection unit are electrically excited by a high-frequency alternating current of 2V and 2 MHz. When current passes through the series circuit, the two planar coils form a magnetic field in the inductance detection channel due to the edge effect, and the oil pollutants can be detected by utilizing the magnetic field area. The detection principle is as follows:
fluid is by passageway entry 10 when getting into detection device, when water droplet, the bubble granule in fluid pass through electric capacity detecting channel 2 through electric capacity detecting element, and the more pure fluid of dielectric constant between two polar plates changes to some extent, because the dielectric constant of bubble is less than hydraulic oil, and the dielectric constant of water is greater than hydraulic oil, therefore bubble and water droplet will make the electric capacity change that produces not equidirectional between the polar plate to can distinguish the detection to bubble and water droplet in the hydraulic oil.
When oil enters the detection device from the channel inlet 10, when ferromagnetic particles and non-ferromagnetic particles in the oil pass through the inductance detection unit through the inductance detection channel 5, because the magnetization and eddy effect that two kinds of particles are subjected to are different, the inductance of the directions of the ferromagnetic particles and the non-ferromagnetic particles changes, and therefore the ferromagnetic particles and the non-ferromagnetic particles in the hydraulic oil can be distinguished and detected.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The high-permeability material inductance-capacitance double-channel oil detection device comprises an excitation-acquisition unit (1) and a detection unit connected with the excitation-acquisition unit (1) through an insulated wire; characterized in that, the detecting element includes electric capacity detecting element and inductance detecting element, wherein:
the capacitance detection unit comprises a capacitance detection flow channel (2), a left electrode (3) and a right electrode (4) which are oppositely arranged at two sides of the capacitance detection flow channel (2);
the inductance detection unit comprises an inductance detection flow channel (5), a first planar coil (6), a second planar coil (7), a first high magnetic conductive alloy (8) and a second high magnetic conductive alloy (9); the first planar coil (6) comprises a first binding surface and a first non-binding surface; the second planar coil (7) comprises a second binding surface and a second non-binding surface; the first binding surface is tightly attached to the second binding surface, the first non-binding surface is tightly attached to the first high-permeability alloy (8), and the second non-binding surface is tightly attached to the second high-permeability alloy (9); a first dovetail groove is formed in the first high magnetic conductive alloy (8), and a second dovetail groove is formed in the second high magnetic conductive alloy (9); the inductance detection flow channel (5) penetrates through the first planar coil (6), the second planar coil (7), the first dovetail groove and the second dovetail groove;
a left electrode (3) and a right electrode (4) of the capacitance detection unit are respectively connected with the positive electrode and the negative electrode of the excitation-collection unit through insulated wires; two end leads of a first planar coil (6) and a second planar coil (7) of the inductance detection unit are respectively connected with the positive electrode and the negative electrode of the excitation-acquisition unit (1) through insulated wires to form a detection excitation and data acquisition loop.
2. The inductance-capacitance dual-channel oil detection device with the high magnetic permeability material as claimed in claim 1, wherein the smallest slits of the first dovetail groove and the second dovetail groove are tangent to the inductance detection flow channel (5).
3. The inductance-capacitance dual-channel oil detection device with the high magnetic permeability material as claimed in claim 1, wherein one end of the capacitance detection flow channel (2) is connected with one end of the inductance detection flow channel (5), and the connected port is a channel inlet (10); the other end of the capacitance detection flow channel (2) is connected with the other end of the inductance detection flow channel (5), and the connected port is a channel outlet (11).
4. The inductance-capacitance dual-channel oil detection device with high magnetic permeability material as claimed in claim 1, wherein the capacitance detection unit further comprises an electrode fixing bracket (12) for fixing the left electrode (3) and the right electrode (4); the inductance detection unit further comprises a coil fixing support (13) used for fixing the first planar coil (6), the second planar coil (7), the first high permeability magnetic alloy (8) and the second high permeability magnetic alloy (9).
5. The inductance-capacitance dual-channel oil detection device with high magnetic permeability material as claimed in claim 1, further comprising a PDMS matrix (14), wherein the detection unit is fixed inside the PDMS matrix (14).
6. The inductance-capacitance dual-channel oil detection device with high magnetic permeability material as claimed in claim 1, wherein the inner diameters of the capacitance detection flow channel (2) and the inductance detection flow channel (5) are both 300 microns.
7. The inductance-capacitance dual-channel oil detection device with the high-permeability material according to claim 1, wherein the first planar coil (6) and the second planar coil (7) are formed by winding enameled wires, each planar coil is formed by winding three layers, the diameter of each planar coil is 70 micrometers, the inner diameter of each planar coil is 300 micrometers, and the number of turns of each planar coil is 120 turns.
8. The inductance-capacitance dual-channel oil detection device with high magnetic permeability material as claimed in claim 1, wherein the material of the left electrode (3) and the right electrode (4) comprises permalloy, silicon steel sheet and magnetic nano particles.
9. The inductance-capacitance dual-channel oil detection device with high permeability magnetic materials as claimed in claim 1, wherein the first and second high permeability magnetic alloys (8, 9) comprise permalloy, silicon steel sheets, and magnetic nano materials.
10. The inductance-capacitance dual-channel oil detection device with high magnetic permeability material as claimed in claim 1, wherein the excitation-collection unit (1) is an impedance analyzer, and the capacitance detection unit and the inductance detection unit are electrically excited by 2V and 2MHz high-frequency alternating current.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110163987.9A CN112986343B (en) | 2021-02-05 | 2021-02-05 | High magnetic conductive material inductance-electric capacity binary channels fluid detection device |
| JP2021081554A JP7224058B2 (en) | 2021-02-05 | 2021-05-13 | Inductance/capacitance two-path oil liquid detector using high magnetic permeability material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110163987.9A CN112986343B (en) | 2021-02-05 | 2021-02-05 | High magnetic conductive material inductance-electric capacity binary channels fluid detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112986343A CN112986343A (en) | 2021-06-18 |
| CN112986343B true CN112986343B (en) | 2022-05-10 |
Family
ID=76348404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110163987.9A Active CN112986343B (en) | 2021-02-05 | 2021-02-05 | High magnetic conductive material inductance-electric capacity binary channels fluid detection device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7224058B2 (en) |
| CN (1) | CN112986343B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116046622B (en) * | 2023-02-21 | 2023-06-13 | 山东中科普锐检测技术有限公司 | Oil magnetic particle monitoring unit, intelligent maintenance system and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331389A (en) * | 2010-11-30 | 2012-01-25 | 蒋伟平 | High-sensitivity oil abrasive grain on-line monitoring sensor |
| CN106093146A (en) * | 2016-08-29 | 2016-11-09 | 大连海事大学 | A kind of capacitive reactance formula oil liquid detection system and preparation method thereof |
| CN109115844A (en) * | 2018-08-29 | 2019-01-01 | 大连海事大学 | A kind of high sensitivity hydraulic oil liquid detection device and preparation method thereof |
| CN109342508A (en) * | 2018-11-02 | 2019-02-15 | 大连海事大学 | A kind of multi-pollutant oil liquid detection sensor |
| CN110315397A (en) * | 2019-05-27 | 2019-10-11 | 浙江工业大学 | Ultrasonic cavitation and magnetic field auxiliary low pressure abrasive Flow polishing method and device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2101330B (en) * | 1981-06-22 | 1985-02-27 | Smiths Industries Plc | Detecting particles in flowing fluids |
| GB9417763D0 (en) | 1994-08-31 | 1994-10-19 | Univ Edinburgh | Debris monitoring transducer |
| JP4889441B2 (en) | 2006-10-24 | 2012-03-07 | Ｎｔｎ株式会社 | Debris detection sensor |
| JP4889424B2 (en) | 2006-09-26 | 2012-03-07 | Ｎｔｎ株式会社 | Debris detection sensor |
| JP5355232B2 (en) | 2009-06-01 | 2013-11-27 | 国立大学法人豊橋技術科学大学 | Metal foreign object detection method and apparatus therefor |
| DE102014104843A1 (en) * | 2014-04-04 | 2015-10-08 | WTW Wissenschaftlich-Technische Werkstätten GmbH | Oil quality sensor and fryer with such an oil quality sensor |
| CN107340544B (en) | 2016-11-29 | 2019-09-03 | 北京理工大学 | A kind of the minute metallic particle on-line detecting system and method for high sensitivity |
| CN109115838B (en) | 2018-08-29 | 2021-04-23 | 大连海事大学 | Multi-parameter oil liquid detection device and manufacturing method thereof |
| CN111024574A (en) | 2019-12-30 | 2020-04-17 | 广研检测（广州）有限公司 | Oil metal particle detection device based on permanent magnet and high-frequency excitation |
| CN113035565B (en) | 2021-03-10 | 2023-03-28 | 远景能源有限公司 | Working solution metal particle detection equipment and coil manufacturing method thereof |
-
2021
- 2021-02-05 CN CN202110163987.9A patent/CN112986343B/en active Active
- 2021-05-13 JP JP2021081554A patent/JP7224058B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331389A (en) * | 2010-11-30 | 2012-01-25 | 蒋伟平 | High-sensitivity oil abrasive grain on-line monitoring sensor |
| CN106093146A (en) * | 2016-08-29 | 2016-11-09 | 大连海事大学 | A kind of capacitive reactance formula oil liquid detection system and preparation method thereof |
| CN109115844A (en) * | 2018-08-29 | 2019-01-01 | 大连海事大学 | A kind of high sensitivity hydraulic oil liquid detection device and preparation method thereof |
| CN109342508A (en) * | 2018-11-02 | 2019-02-15 | 大连海事大学 | A kind of multi-pollutant oil liquid detection sensor |
| CN110315397A (en) * | 2019-05-27 | 2019-10-11 | 浙江工业大学 | Ultrasonic cavitation and magnetic field auxiliary low pressure abrasive Flow polishing method and device |
Non-Patent Citations (1)
| Title |
|---|
| 采用柱形极板的电容式油液检测传感器;史皓天 等;<<仪表技术与传感器>>;20190831(第8期);第8-12页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112986343A (en) | 2021-06-18 |
| JP2022120762A (en) | 2022-08-18 |
| JP7224058B2 (en) | 2023-02-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109115838B (en) | Multi-parameter oil liquid detection device and manufacturing method thereof | |
| CN109916786B (en) | Double-coil inductive abrasive particle monitoring device and manufacturing method thereof | |
| CN109342508B (en) | Multi-pollutant oil detection sensor | |
| CN109115844B (en) | High-sensitivity hydraulic oil detection device and manufacturing method thereof | |
| Shi et al. | An impedance debris sensor based on a high-gradient magnetic field for high sensitivity and high throughput | |
| CN109630502B (en) | Multi-parameter oil comprehensive detection device and manufacturing method thereof | |
| CN110031373B (en) | Multi-signal synchronous feedback device for oil detection | |
| CN109283120B (en) | Three-coil oil detection device and manufacturing method thereof | |
| CN109100270B (en) | Annular micro-channel oil liquid detection device and manufacturing method thereof | |
| CN109470605B (en) | Inductance type oil detection sensor | |
| CN109813763A (en) | A kind of double solenoid coil type multi-parameter oil contaminant detection sensor | |
| CN109470606B (en) | Microfluid inductance type oil detection device | |
| CN112986343B (en) | High magnetic conductive material inductance-electric capacity binary channels fluid detection device | |
| CN109916785B (en) | Planar inductive abrasive particle monitoring device and manufacturing method thereof | |
| Shi et al. | An ultrasensitive debris microsensor for oil health monitoring based on resistance–inductance parameter | |
| CN109813762A (en) | A kind of inductance type magnetic nano material sensor and production method | |
| CN112986344A (en) | Inductance-electric capacity fluid pollutant synchronous detection device | |
| Wu et al. | Ferromagnetic metal particle detection including calculation of particle magnetic permeability based on micro inductive sensor | |
| Feng et al. | A novel integrated microfluidic platform based on micro-magnetic sensor for magnetic bead manipulation and detection | |
| CN109884169B (en) | Multifunctional oil liquid detection device and manufacturing method thereof | |
| Shi et al. | Comprehensive detection method for multi-contaminants in hydraulic oil based on inductance-resistance-capacitance analysis | |
| CN114137061A (en) | Metal abrasive particle detection sensor containing high-permeability material and oil detection method | |
| CN113325047B (en) | Lubricating oil cleanliness monitoring device based on multi-parameter bridge method | |
| CN113324874A (en) | Liquid viscosity measuring device | |
| CN113267540A (en) | Embedded high gradient magnetic field oil multi-pollutant detection device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |