CN102243200A - On-line monitoring sensor of lubricating oil - Google Patents
On-line monitoring sensor of lubricating oil Download PDFInfo
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- CN102243200A CN102243200A CN 201110115458 CN201110115458A CN102243200A CN 102243200 A CN102243200 A CN 102243200A CN 201110115458 CN201110115458 CN 201110115458 CN 201110115458 A CN201110115458 A CN 201110115458A CN 102243200 A CN102243200 A CN 102243200A
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- lubricating oil
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 23
- 239000003921 oil Substances 0.000 abstract description 15
- 239000002245 particle Substances 0.000 abstract description 13
- 230000005307 ferromagnetism Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000003745 diagnosis Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000001939 inductive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005294 ferromagnetic effect Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000005291 magnetic effect Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010291 electrical method Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012764 semi-quantitative analysis Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to an on-line monitoring sensor of lubricating oil and belongs to sensor field. The sensor comprises two concentric plane coils and four terminals. Through wiring sequence change of the four terminals, conversion between an inductance sensor and a capacitance sensor is realized, thereby ferromagnetism abrasive particle concentration of the lubricating oil is detected, and deterioration degree of an oil product is monitored. Thus necessary information for condition monitoring and fault diagnosis of machinery equipment is provided, and a maintenance system in dependence on equipment state is established.
Description
Technical field
The present invention relates to a kind of on-line monitoring sensor of lubricating oil, belong to the monitoring sensor field.
Background technology
Lubricating oil is plant equipment " blood ", and it plays sealing, lubricated, anti-attrition, cooling, cleaning, damping and vital role such as anticorrosion in plant equipment.The oil liquid monitoring technology be by analyze monitored machine with the performance change of lubricating oil and the wear particle situation of carrying, obtain the information of the lubricated and state of wear of machine, and then estimate the operating mode of machine and predict the technology of fault.
Oil liquid monitoring is divided into off-line monitoring and on-line monitoring, off-line monitoring is to gather oil sample at the scene, analyzes in the laboratory then, and analytical instrument commonly used has automatic particle collector, ferrograph, spectroanalysis instrument, precise electronic sky equality, this monitoring mode cycle is long, and apparatus expensive.On-line monitoring is by the sensor lubricating oil data of collecting device continuously or off and on, directly demonstrates the state of equipment fluid by the signal Processing transmission technology, has real-time characteristics.
For the on-line monitoring sensor, each company has developed the on-line monitoring sensor based on various principles such as optical Fiber Method, infrared method, ray method, image-recognizing methods both at home and abroad at present, but the most of complex structures of these on-line monitoring sensors cost an arm and a leg.Also have the monitoring sensor based on electrical method in addition, this sensor construction is simple, and cost is low, mainly comprises inductance type and capacitance type sensor.Wherein inductance type transducer is mainly used in the ferromagnetism abrasive particle that detects in the lubricating oil, and its primary structure is that helical is tubular.As the MetalSCAN sensor of Canadian GasTops company development, can measure the iron particle in the fluid.Capacitance type sensor is mainly used in the oil product degradation that detects lubricating oil, and its common structure is the pole plate type.Fluid moisture sensor as the research and development of Kavlico company can carry out semiquantitative analysis to moisture.Above-mentioned two class electric sensors can't satisfy whole demands in oil liquid monitoring field because of performance limitations can only detect oil product or abrasive particle in a certain respect.
Summary of the invention
The present invention proposes a kind of on-line monitoring sensor of lubricating oil, this sensor can detect the ferromagnetism wear particle concentration in the lubricating oil and the degradation of oil product simultaneously, thereby the lubricated and state of wear of monitoring equipment is better realized changing oil inspect and repair as necessary by matter.
The present invention adopts following technical scheme for solving its technical matters:
A kind of on-line monitoring sensor of lubricating oil comprises two concentric planar coils and four binding posts, it is characterized in that when from first binding post, when the 4th binding post is drawn wiring, coil just shows as capacitance characteristic; When from first binding post, the 3rd binding post or second binding post, when the 4th binding post is drawn wiring, coil just shows as single times of inductance characteristic; When second binding post, the 3rd binding post are communicated with, draw wiring from first binding post, the 4th binding post, coil just shows as 2 times of inductance characteristics.
Described concentric planar coil is circle, polygon or ellipse.
Described planar coil thickness be micron to mm-scale, the diameter of planar coil and live width and line-spacing be micron to mm-scale.
Beneficial effect of the present invention is as follows: the function of this sensor is integrated inductance and electric capacity, by follow-up circuit design, can detect the concentration of abrasive particle in the fluid and the rotten situation of fluid, thereby realize the foreseeability maintenance of machine and change oil the maintenance cost of saving machine by matter.Because this sensor is a planar structure, size to mm-scale, can be saved the volume of sensor at micron, alleviates the quality of sensor, has a wide range of applications at aviation field simultaneously.
Description of drawings
Fig. 1 is the planar coil construction figure of this sensor, and wherein 1,2,3,4 is binding post, and 5 is solenoid, and 6 is matrix.
Fig. 2 is that coil is the synoptic diagram of capacitive form sensor, draws wiring from 1,4 binding post.
Fig. 3 is that coil is the synoptic diagram of inductance form sensor, draws wiring from 1,3 binding post.
Fig. 4 is that coil is the synoptic diagram of inductance form sensor, and 2,3 binding posts are communicated with, and draw wiring from 1,4 binding post, and inductance value is the twice (two inductance series connection) among Fig. 3.
Embodiment
Below in conjunction with accompanying drawing the invention is described in further details.
As shown in Figure 1, a kind of on-line monitoring sensor of lubricating oil is made two concentric planar coils on matrix, the thickness of each coil be micron to mm-scale, the diameter of coil and live width and line-spacing are micron to mm-scale.Two planar coils pass through the variation of four binding post 1,2,3,4 orders of connection, realize the switching of inductive type sensor and capacitance type transducers.The inductive type sensor is used for the detection of fluid ferromagnetic particle, and capacitance type transducers is used for the detection of lubricating oil oil product; Thereby realize the detection of ferromagnetic particle in the fluid and the detection of lubricating oil oil product.The shape of ceoncentrically wound coil can be circular, polygon or ellipse etc.The matrix material of sensor can be selected copper-clad plate or other nonmetallic materials.On matrix material, make planar coil by technologies such as photoetching, corrosion or electro-deposition.This sensor can be installed in the oil pipe of oil circuit or in the fuel tank, as required single-point monitoring or form a monitoring network.
As shown in Figure 2, when when binding post 1,4 is drawn wiring, coil just shows capacitance characteristic.Because the specific inductive capacity of normal lubricating oil is about 2.0, and the specific inductive capacity of water is about 80.0, so if be mixed with water in the lubricating oil or owing to reasons such as oxidation produce remarkable deterioration, its specific inductive capacity will change, thereby make the electric capacity of sensor change.By back relevant detection circuit capacitance change is converted into voltage signal, thereby obtains the metamorphic grade of lubricating oil.
As shown in Figure 3, when when binding post 1,3 is drawn wiring, coil just shows as single times of inductance characteristic.When containing ferromagnetic particle in the lubricating oil, the relative permeability of coil magnetic circuit will change, and the variable quantity of magnetic permeability is relevant with the concentration of particle.The variation of magnetic permeability causes the inductance of coil to change, and by follow-up circuit the inductance variable quantity is converted into voltage signal, thereby obtains the content of ferromagnetic particle in the oil.
As shown in Figure 4, when binding post 2,3 is communicated with, draw wiring from binding post 1,4, sensor just becomes the inductance sensor that is together in series by two planar inductors, and coil just shows as 2 times of inductance characteristics.
Can be according to different needs, the wiring of binding post changes during by sensor installation, selects the inductance capacitance function of this sensor.Also can use other controllers such as single-chip microcomputer, DSP, use the method for making software, periodically realize the switching of binding post, thereby make sensor sheet reveal different characteristics.
Claims (3)
1. the on-line monitoring sensor of a lubricating oil comprises two concentric planar coils and four binding posts (1,2,3,4), it is characterized in that when from first binding post (1), the 4th binding post (4) when drawing wiring, coil just shows as capacitance characteristic; When from first binding post (1), the 3rd binding post (3) or second binding post (2), the 4th binding post (4) when drawing wiring, coil just shows as single times of inductance characteristic; When second binding post (2), the 3rd binding post (3) are communicated with, draw wiring from first binding post (1), the 4th binding post (4), coil just shows as 2 times of inductance characteristics.
2. the on-line monitoring sensor of a kind of lubricating oil according to claim 1 is characterized in that described concentric planar coil is circle, polygon or ellipse.
3. the on-line monitoring sensor of a kind of lubricating oil according to claim 1, it is characterized in that described planar coil thickness for micron to mm-scale, the diameter of planar coil and live width and line-spacing be micron to mm-scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110115458 CN102243200A (en) | 2011-05-05 | 2011-05-05 | On-line monitoring sensor of lubricating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110115458 CN102243200A (en) | 2011-05-05 | 2011-05-05 | On-line monitoring sensor of lubricating oil |
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| Publication Number | Publication Date |
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| CN102243200A true CN102243200A (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110115458 Pending CN102243200A (en) | 2011-05-05 | 2011-05-05 | On-line monitoring sensor of lubricating oil |
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Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519851A (en) * | 2011-12-29 | 2012-06-27 | 吴望东 | Capacitor type on-line iron spectrum detector |
| CN103674787A (en) * | 2013-11-27 | 2014-03-26 | 上海交通大学 | Miniaturized integration induction type on-line monitoring sensor for slide oil grains |
| CN104114998A (en) * | 2012-02-17 | 2014-10-22 | 纳博特斯克有限公司 | Lubricating oil deterioration sensor and machine provided with same |
| CN104132970A (en) * | 2014-08-06 | 2014-11-05 | 北京华安广通科技发展有限公司 | High-precision sensor for detecting ferromagnetic particles in lubricating oil |
| CN104390893A (en) * | 2014-11-24 | 2015-03-04 | 电子科技大学 | Oil mill grain sensor based on printed coil |
| WO2016083839A1 (en) * | 2014-11-28 | 2016-06-02 | Parker Hannifin Manufacturing Limited | Sensor apparatus |
| CN105806760A (en) * | 2016-05-19 | 2016-07-27 | 北京至感传感器技术研究院有限公司 | Online oil liquid quality sensor |
| CN105823711A (en) * | 2016-04-18 | 2016-08-03 | 上海电机学院 | Online monitoring method for oil abrasive particles |
| CN105865986A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Oil monitoring equipment based on full-band variable-structure working condition adaptive filtering and molding |
| CN105865987A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Method for monitoring oil by means of full-frequency-band variable-structure filtering, adsorbing and molding |
| CN105865984A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Oil monitoring method based on full-band variable-structure working condition adaptive filtering and molding |
| CN105866197A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Wear particle online monitoring device using filtering, centrifuge and adjacent capacitance |
| CN105866198A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Wear particle online monitoring device using filtering, centrifuge and adjacent capacitance |
| CN105891277A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Wear particle monitoring system adopting filtering, centrifugalization and adjacent capacitance |
| CN105891275A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Wear particle monitoring device adopting temperature control, cyclone centrifugation and adjacent capacitance |
| CN105891061A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Liquid oil monitoring device adopting full-band and variable-structure filtering, absorbing and shaping |
| CN105891058A (en) * | 2016-05-12 | 2016-08-24 | 李伟波 | Double-coil oil liquid monitoring method using full-band filtering, separating and shaping |
| CN105928844A (en) * | 2016-05-12 | 2016-09-07 | 绍兴文理学院 | Double-coil oil liquid monitoring equipment adopting wave suppression, separation and shaping |
| CN105973763A (en) * | 2016-05-12 | 2016-09-28 | 绍兴文理学院 | Liquid oil monitoring device adopting full-frequency-band-working-condition adaptive filtering, separating and molding |
| CN105973949A (en) * | 2016-05-12 | 2016-09-28 | 绍兴文理学院 | System for monitoring wear particles on line by virtue of hydraulic filtration, centrifugation and adjacent capacitance |
| CN106018192A (en) * | 2016-05-12 | 2016-10-12 | 绍兴文理学院 | Double-coil oil monitoring method with wave suppression, separation and molding |
| CN106018190A (en) * | 2016-05-12 | 2016-10-12 | 绍兴文理学院 | Oil monitoring method using full-band working condition adaptive filtering, separation and shaping |
| CN106018191A (en) * | 2016-05-12 | 2016-10-12 | 李伟波 | Double-excitation solenoid type particle detection method achieved through full-frequency-band work condition self-adaptive filtering |
| CN106018189A (en) * | 2016-05-12 | 2016-10-12 | 李伟波 | Particle sensitivity detection method using full-band variable-structure working condition adaptive filtering |
| CN106018217A (en) * | 2016-05-12 | 2016-10-12 | 李伟波 | Double-exciting solenoid type particle sensitive method with wave suppression |
| 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 |
| CN106383146A (en) * | 2016-08-29 | 2017-02-08 | 大连海事大学 | Inductive-reactance type oil detection system and manufacturing 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 |
| CN109813771A (en) * | 2019-03-14 | 2019-05-28 | 大连海事大学 | A kind of magnetocapacitance ferromagnetism wear particle detection sensor and production method |
| CN110031373A (en) * | 2019-05-17 | 2019-07-19 | 大连海事大学 | A kind of multi signal synchronous feedback plant of oil liquid detection |
| CN113405933A (en) * | 2021-06-18 | 2021-09-17 | 北京格谱检测科技有限公司 | Oil abrasive particle analyzer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175251A (en) * | 1978-04-20 | 1979-11-20 | Schlumberger Technology Corporation | Nuclear magnetism logging method and system |
| CN2310321Y (en) * | 1997-07-15 | 1999-03-10 | 西安交通大学 | Double-plane electric capacity type lubricating-oil quality testing sensor |
| CN2478101Y (en) * | 2001-05-18 | 2002-02-20 | 张钢柱 | Capacitor sensor of oil liquid quality detector |
| JP2006064410A (en) * | 2004-08-24 | 2006-03-09 | Denso Corp | Oil deterioration detector |
-
2011
- 2011-05-05 CN CN 201110115458 patent/CN102243200A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175251A (en) * | 1978-04-20 | 1979-11-20 | Schlumberger Technology Corporation | Nuclear magnetism logging method and system |
| CN2310321Y (en) * | 1997-07-15 | 1999-03-10 | 西安交通大学 | Double-plane electric capacity type lubricating-oil quality testing sensor |
| CN2478101Y (en) * | 2001-05-18 | 2002-02-20 | 张钢柱 | Capacitor sensor of oil liquid quality detector |
| JP2006064410A (en) * | 2004-08-24 | 2006-03-09 | Denso Corp | Oil deterioration detector |
Non-Patent Citations (2)
| Title |
|---|
| 《Microfluid and Nanofluid》 20100521 Li Du et al. Real-time monitoring of wear debris in lubrication oil using a microfluidic inductive Coulter counting device 1241-1242 第9卷, 第6期 * |
| 《电子器件》 20021231 唐晓莉等 一种新型无芯PCB平面电感器研究 319-323 第25卷, 第4期 * |
Cited By (37)
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| CN102519851A (en) * | 2011-12-29 | 2012-06-27 | 吴望东 | Capacitor type on-line iron spectrum detector |
| CN104114998A (en) * | 2012-02-17 | 2014-10-22 | 纳博特斯克有限公司 | Lubricating oil deterioration sensor and machine provided with same |
| CN103674787A (en) * | 2013-11-27 | 2014-03-26 | 上海交通大学 | Miniaturized integration induction type on-line monitoring sensor for slide oil grains |
| CN103674787B (en) * | 2013-11-27 | 2016-06-01 | 上海交通大学 | The induction type lubricating oil abrasive particle on-line monitoring sensor that miniatureization is integrated |
| CN104132970B (en) * | 2014-08-06 | 2016-08-17 | 北京远瑞科技有限公司 | Ferromagnetic particle detection sensor in lubricating oil in high precision |
| CN104132970A (en) * | 2014-08-06 | 2014-11-05 | 北京华安广通科技发展有限公司 | High-precision sensor for detecting ferromagnetic particles in lubricating oil |
| CN104390893A (en) * | 2014-11-24 | 2015-03-04 | 电子科技大学 | Oil mill grain sensor based on printed coil |
| WO2016083839A1 (en) * | 2014-11-28 | 2016-06-02 | Parker Hannifin Manufacturing Limited | Sensor apparatus |
| GB2548746A (en) * | 2014-11-28 | 2017-09-27 | Parker Hannifin Ltd | Sensor apparatus |
| CN105823711A (en) * | 2016-04-18 | 2016-08-03 | 上海电机学院 | Online monitoring method for oil abrasive particles |
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| CN105891275A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Wear particle monitoring device adopting temperature control, cyclone centrifugation and adjacent capacitance |
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| CN105973763A (en) * | 2016-05-12 | 2016-09-28 | 绍兴文理学院 | Liquid oil monitoring device adopting full-frequency-band-working-condition adaptive filtering, separating and molding |
| CN105973949A (en) * | 2016-05-12 | 2016-09-28 | 绍兴文理学院 | System for monitoring wear particles on line by virtue of hydraulic filtration, centrifugation and adjacent capacitance |
| CN106018192A (en) * | 2016-05-12 | 2016-10-12 | 绍兴文理学院 | Double-coil oil monitoring method with wave suppression, separation and molding |
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| CN106018191A (en) * | 2016-05-12 | 2016-10-12 | 李伟波 | Double-excitation solenoid type particle detection method achieved through full-frequency-band work condition self-adaptive filtering |
| CN106018189A (en) * | 2016-05-12 | 2016-10-12 | 李伟波 | Particle sensitivity detection method using full-band variable-structure working condition adaptive filtering |
| CN106018217A (en) * | 2016-05-12 | 2016-10-12 | 李伟波 | Double-exciting solenoid type particle sensitive method with wave suppression |
| CN105806760A (en) * | 2016-05-19 | 2016-07-27 | 北京至感传感器技术研究院有限公司 | Online oil liquid quality 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 |
| CN106383146A (en) * | 2016-08-29 | 2017-02-08 | 大连海事大学 | Inductive-reactance type oil detection system and manufacturing method thereof |
| CN106093146B (en) * | 2016-08-29 | 2019-01-18 | 大连海事大学 | A kind of capacitive reactance formula oil liquid detection system and preparation method thereof |
| CN106383146B (en) * | 2016-08-29 | 2019-02-12 | 大连海事大学 | A kind of induction 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 |
| CN109115844B (en) * | 2018-08-29 | 2021-03-19 | 大连海事大学 | High-sensitivity hydraulic oil detection device and manufacturing method thereof |
| CN109813771A (en) * | 2019-03-14 | 2019-05-28 | 大连海事大学 | A kind of magnetocapacitance ferromagnetism wear particle detection sensor and production method |
| CN110031373A (en) * | 2019-05-17 | 2019-07-19 | 大连海事大学 | A kind of multi signal synchronous feedback plant of oil liquid detection |
| CN113405933A (en) * | 2021-06-18 | 2021-09-17 | 北京格谱检测科技有限公司 | Oil abrasive particle analyzer |
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Application publication date: 20111116 |