CN109813763A - A kind of double solenoid coil type multi-parameter oil contaminant detection sensor - Google Patents
A kind of double solenoid coil type multi-parameter oil contaminant detection sensor Download PDFInfo
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- CN109813763A CN109813763A CN201910195184.4A CN201910195184A CN109813763A CN 109813763 A CN109813763 A CN 109813763A CN 201910195184 A CN201910195184 A CN 201910195184A CN 109813763 A CN109813763 A CN 109813763A
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Abstract
The present invention provides a kind of double solenoid coil type multi-parameter oil contaminant detection sensor.Including micro-fluidic detection chip, sensing unit and impedance analyzer；Micro-fluidic detection chip includes the chip body of substrate of glass and setting on the glass substrate；Chip body includes: that the one end being arranged in chip body is provided with oil liquid entrance, the other end is provided with the microchannel that oil liquid exports；Sensing unit is arranged by two faces and the identical solenoid coil of structure forms, and sensing unit connects impedance analyzer by insulated conductor.It is single that technical solution of the present invention solves detection parameters in the prior art, cannot effectively be detected to multi-pollutant, the lower problem of detection accuracy.
Description
Technical field
The present invention relates to oil liquid detection technical fields, specifically, more particularly to a kind of double solenoid coil type multi-parameter
Oil contaminant detection sensor.
Background technique
Abrasion is to lead to all kinds of machinery equipment operation irregularities and one of the most common failure mode that fails, equipment internal friction
With the inevitable outcome of abrasion --- it is suspended in the wear particle in lubricating system oil liquid, is reflection equipment inter deterioration situation (journey
Degree, position and type) important information carrier.When oil system works normally, pollution grain diameter is maintained at 20 μm or less.
Machinery is abnormal abrasion, and the solid grain size of generation increases rapidly, and even up to 100 μm or more, is also easy to produce dangerous working condition,
Cause systemic breakdown.Therefore oil liquid detection technology can detect big particle and can judge its material, to know abrasion rapidly
Position, replace oil liquid in time.There are a series of method for fast determination of pollutants at present, it is different based on its principle, accordingly
There are many methods.Such as acoustic wave detection, optical detection, inductance detection method and capacitance detecting method etc..Acoustic wave detection and light
It is high to learn detection method detection accuracy, the former influences vulnerable to the conditions such as noise and vibration, and the latter is vulnerable to temperature and oil liquid permeability
Equal environment influence.Inductance detection method can distinguish ferromagnetism and non-ferromagnetic debris, and factor affected by environment is small.
In order to realize the quick detection of oil contaminant, this patent on the basis of inductance detection method and capacitance detecting method,
A kind of opposed double solenoid coil is devised, inductance and capacitance detecting may be implemented.The present apparatus and existing hydraulic oil pollution quality testing
Survey technology is compared, and is had multi-parameter detection, is made simple and fast, low in cost, the advantages such as detection accuracy height.
Summary of the invention
According to technical problem set forth above, and provide a kind of double solenoid coil type multi-parameter oil contamination analyte detection biography
Sensor.The present invention mainly on the basis of inductance detection method and capacitance detecting method, devises a kind of opposed double solenoid coil, can
To realize inductance and capacitance detecting.
The technological means that the present invention uses is as follows:
A kind of double solenoid coil type multi-parameter oil contaminant detection sensor, including micro-fluidic detection chip, sensing
Unit and impedance analyzer；The impedance analyzer provides high-frequency ac electric excitation, and the micro-fluidic detection chip includes glass
The chip body of glass substrate and setting on the glass substrate；The chip body includes:
The one end being arranged in chip body is provided with oil liquid entrance, the other end is provided with the microchannel that oil liquid exports；
The sensing unit is arranged by two faces and the identical solenoid coil of structure forms, and the sensing unit passes through
Insulated conductor connects impedance analyzer.
Further, the sensing unit is divided into inductance detection and capacitance detecting according to the difference of insulated conductor connection type
Two kinds of operating modes, described two operating modes can switch at any time；
In use, the impedance analyzer provides high-frequency ac electric excitation, when oil contaminant is ferromagnetic metal particle
When with non-ferromagnetic metal particle, the double solenoid coil type multi-parameter oil contaminant detection sensor is in inductance detection
Mode；When oil contaminant is water and air, at the double solenoid coil type multi-parameter oil contaminant detection sensor
In capacitance detecting mode.
Further, the microchannel is made of cast material, and the microchannel is passed through from sensing unit inner hole.
Further, the microchannel diameter is 100-300 microns；The solenoid coil is formed by enameled wire coiling,
Solenoid coil internal diameter is 150-350 microns, and enameled wire line footpath is 40-80 microns, and the number of turns is 400-600 circle.
The present invention also provides a kind of double solenoid coil type multi-parameter oil contamination object detecting method, the detection methods
It is realized, and included the following steps: using the double solenoid coil type multi-parameter oil contaminant detection sensor
Step S1: oil liquid to be detected is delivered to microchannel by oil liquid entrance；
Step S2: flowing through the oil liquid to be detected of sensing unit, applies high-frequency signal injection, bipitch by impedance analyzer
Pipeline ring type multi-parameter oil contaminant detection sensor switches the connection side of insulated conductor according to the difference of pollutant in oil liquid
Formula selects different modes to distinguish detection to the pollutant in oil liquid；
Step S3: oil liquid after tested is exported from oil liquid and is discharged.
The present invention also provides a kind of production method of double solenoid coil type multi-parameter oil contaminant detection sensor,
The following steps are included:
Step 1: using two solenoid coils of coil winding machine coiling；
Step 2: the mold for making microchannel being passed through by two face arrangements and the identical solenoid coil of structure forms
Sensing unit, and be fixed in above substrate of glass, be finally poured PDMS, after heated at constant temperature solidifies 1 hour, form PDMS
Matrix；
Step 3: the mold of extraction production microchannel, punching production oil liquid entrance and oil liquid outlet.
Compared with the prior art, the invention has the following advantages that
1, double solenoid coil type multi-parameter oil contaminant detection sensor provided by the invention, can distinguish 4 kinds not
Connatural Hydraulic oil pollutants.
2, double solenoid coil type multi-parameter oil contaminant detection sensor provided by the invention, by sensing unit
Two face arrangements and the identical solenoid coil of structure, realize the switching at any time of inductance and capacitance detecting mode, are easy production,
It is at low cost.
3, multi-pollutant oil liquid detection sensor provided by the invention, enamel-cover linear diameter thinner line more using the number of turns
Circle, detectability are stronger.
The present invention can be widely popularized in fields such as oil liquid detections based on the above reasons.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is inventive sensor structure chart.
Fig. 2 is sensing unit side view of the present invention.
Fig. 3 is sensing unit sectional view of the present invention.
Fig. 4 is working sensor mode schematic diagram.
Fig. 5 inductance detection iron particle signal graph.
Fig. 6 is inductance detection copper particle signal figure.
Fig. 7 is capacitance detecting water signal figure.
Fig. 8 is capacitance detecting air signal figure.
In figure: 1, oil liquid entrance；2, oil liquid exports；3, microchannel；4, sensing unit；5, PDMS matrix；6, substrate of glass；
7, solenoid coil；8, impedance analyzer.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.It is real to the description of at least one exemplary embodiment below
It is merely illustrative on border, never as to the present invention and its application or any restrictions used.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be clear that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.Technology known for person of ordinary skill in the relevant, side
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part of book.In shown here and discussion all examples, appointing should be construed as merely illustratively to occurrence, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need that it is further discussed in figure.
In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical,
Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate that
It must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manage
Solution is limiting the scope of the invention: the noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under its device or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of invention protection scope.
As shown in Figure 1, the present invention provides a kind of double solenoid coil type multi-parameter oil contaminant detection sensor, packet
Include micro-fluidic detection chip, sensing unit 4 and impedance analyzer 8；Impedance analyzer 8 provides high-frequency ac electric excitation, miniflow
Control detection chip includes the chip body of substrate of glass and setting on the glass substrate；Chip body includes: to be arranged in chip master
One end on body is provided with oil liquid entrance 1, the other end is provided with the microchannel 3 that oil liquid exports 2；As shown in Figure 2,3, microchannel 3
It is passed through from the central bore of two solenoid coils 7, sensing unit 4 is arranged by two faces and the identical solenoid coil of structure
7 compositions, the oil liquid with pollutant are driven into sensor from oil liquid entrance 1, flow through sensing unit 4 via microchannel 3, finally
Again by microchannel 3 to oil liquid outlet 2.As a preferred embodiment of the present invention, 3 diameter of microchannel is 100-300 microns；Spiral shell
Spool coil 7 is formed by enameled wire coiling, and 7 internal diameter of solenoid coil is 150-350 microns, and enameled wire line footpath is 40-80 microns,
The number of turns is 400-600 circle.
As shown in figure 4, sensing unit 4 connects impedance analyzer 8 by insulated conductor, sensing unit 4 is according to insulated conductor
The difference of connection type is divided into two kinds of operating modes of inductance detection and capacitance detecting, and two kinds of operating modes can switch at any time；It uses
When, impedance analyzer 8 provides high-frequency ac electric excitation, when oil contaminant is ferromagnetic metal particle and non-ferromagnetic metal
When grain, two solenoid coils 7 are connected in parallel according to A-B connection type, double solenoid coil type multi-parameter oil contamination quality testing
It surveys sensor and is in inductance detection mode；When oil contaminant is water and air, two solenoid coils 7 are connected according to A-C
Mode is connected in series, and two solenoid coils 7 are equivalent at two annular capacitor pole plates, double solenoid coil type multi-parameter oil at this time
Liquid pollutant monitoring sensor is in capacitance detecting mode.
The present invention also provides a kind of production method of double solenoid coil type multi-parameter oil contaminant detection sensor,
The following steps are included:
Step 1: using two solenoid coils of coil winding machine coiling；
Step 2: the mold for making microchannel being passed through by two face arrangements and the identical solenoid coil of structure forms
Sensing unit, and be fixed in above substrate of glass, be finally poured PDMS, after heated at constant temperature solidifies 1 hour, form PDMS
Matrix；
Step 3: the mold of extraction production microchannel, punching production oil liquid entrance and oil liquid outlet.
The present invention also provides a kind of double solenoid coil type multi-parameter oil contamination object detecting method, the detection methods
It is realized, and included the following steps: using the double solenoid coil type multi-parameter oil contaminant detection sensor
Step S1: oil liquid to be detected is delivered to microchannel by oil liquid entrance；
Step S2: flowing through the oil liquid to be detected of sensing unit, applies high-frequency signal injection, bipitch by impedance analyzer
Pipeline ring type multi-parameter oil contaminant detection sensor switches the connection side of insulated conductor according to the difference of pollutant in oil liquid
Formula selects different modes to distinguish detection to the pollutant in oil liquid；
Step S3: oil liquid after tested is exported from oil liquid and is discharged.
Embodiment
The present invention also provides a kind of double solenoid coil type multi-parameter oil contaminant detection sensors, in use, passing
There are two types of operating modes for sensor: inductance detection mode and capacitance detecting mode；
When oil contaminant is ferromagnetic metal particle and non-ferromagnetic metal particle, impedance analyzer 8 provides high frequency
Alternating current (1-2V, 1-2MHz) excitation, two solenoid coils 7 are connected in parallel according to A-B connection type, double solenoid coil type
Multi-parameter oil contaminant detection sensor is in inductance detection mode；As shown in figure 5, when ferromagnetic particle passes through sensing unit
When, since magnetization will generate positive inductance signal pulse, as shown in fig. 6, when non-ferromagnetic debris passes through sensing unit
When, since eddy current effect will generate the inductance signal pulse of negative sense, to realize to ferromagnetic particle in oil liquid and non-ferromagnetic
Property particle differentiation detection.
When oil contaminant is water and air, impedance analyzer 8 provides high-frequency alternating current (1-2V, 0.3-1MHz) and swashs
It encourages, two solenoid coils 7 are connected in series according to A-C connection type, and two solenoid coils 7 are equivalent at two annular electros at this time
Hold pole plate, double solenoid coil type multi-parameter oil contaminant detection sensor is in capacitance detecting mode.Due in oil liquid
The relative dielectric constant of water and air is different, and different capacitance signals can be generated when passing through capacitor plate, as shown in fig. 7, water passes through
Out-of-date to generate upward signal, as shown in figure 8, air can generate downward signal when passing through, therefore capacitance detecting can be with area
Divide the water and air in oil liquid.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (6)
1. a kind of double solenoid coil type multi-parameter oil contaminant detection sensor, which is characterized in that including micro-fluidic detection
Chip, sensing unit and impedance analyzer；The impedance analyzer provides high-frequency ac electric excitation, the micro-fluidic detection core
Piece includes the chip body of substrate of glass and setting on the glass substrate；The chip body includes:
The one end being arranged in chip body is provided with oil liquid entrance, the other end is provided with the microchannel that oil liquid exports；
The sensing unit is arranged by two faces and the identical solenoid coil of structure forms, and the sensing unit passes through insulation
Conducting wire connects impedance analyzer.
2. double solenoid coil type multi-parameter oil contaminant detection sensor according to claim 1, which is characterized in that
The sensing unit is divided into two kinds of operating modes of inductance detection and capacitance detecting according to the difference of insulated conductor connection type, described
Two kinds of operating modes can switch at any time；
In use, the impedance analyzer provides high-frequency ac electric excitation, when oil contaminant is ferromagnetic metal particle and non-
When ferromagnetic metal particle, the double solenoid coil type multi-parameter oil contaminant detection sensor is in inductance detection mould
Formula；When oil contaminant is water and air, the double solenoid coil type multi-parameter oil contaminant detection sensor is in
Capacitance detecting mode.
3. a kind of double solenoid coil type multi-parameter oil contaminant detection sensor according to claim 1, feature
It is, the microchannel is made of cast material, and the microchannel is passed through from sensing unit inner hole.
4. a kind of double solenoid coil type multi-parameter oil contaminant detection sensor according to claim 1, feature
It is, the microchannel diameter is 100-300 microns；The solenoid coil is formed by enameled wire coiling, in solenoid coil
Diameter is 150-350 microns, and enameled wire line footpath is 40-80 microns, and the number of turns is 400-600 circle.
5. a kind of double solenoid coil type multi-parameter oil contamination object detecting method, which is characterized in that the detection method utilizes
Double solenoid coil type multi-parameter oil contaminant detection sensor described in claim 1 is realized, and is included the following steps:
Step S1: oil liquid to be detected is delivered to microchannel by oil liquid entrance；
Step S2: flowing through the oil liquid to be detected of sensing unit, applies high-frequency signal injection, bipitch pipeline by impedance analyzer
Ring type multi-parameter oil contaminant detection sensor switches the connection type of insulated conductor according to the difference of pollutant in oil liquid,
Different modes is selected to distinguish detection to the pollutant in oil liquid；
Step S3: oil liquid after tested is exported from oil liquid and is discharged.
6. a kind of production method of double solenoid coil type multi-parameter oil contaminant detection sensor, which is characterized in that including
Following steps:
Step 1: using two solenoid coils of coil winding machine coiling；
Step 2: the mold for making microchannel is passed through into the biography that by two face arrangements and the identical solenoid coil of structure forms
Feel unit, and be fixed in above substrate of glass, be finally poured PDMS, after heated at constant temperature solidifies 1 hour, forms PDMS base
Body；
Step 3: the mold of extraction production microchannel, punching production oil liquid entrance and oil liquid outlet.
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| CN110243737A (en) * | 2019-07-30 | 2019-09-17 | 大连海事大学 | A kind of solenoid type hydraulic oil abrasive grain classified Monitoring device |
| CN110426426A (en) * | 2019-08-29 | 2019-11-08 | 大连海事大学 | Oil contaminant multi-parameter based on phase shift technology is detecting device integrated and method |
| CN112986344A (en) * | 2021-02-05 | 2021-06-18 | 大连海事大学 | Inductance-electric capacity fluid pollutant synchronous detection device |
| CN113267540A (en) * | 2021-04-28 | 2021-08-17 | 大连海事大学 | Embedded high gradient magnetic field oil multi-pollutant detection device |
| CN113325045A (en) * | 2021-05-14 | 2021-08-31 | 大连海事大学 | Bridge type capacitance measuring device for liquid pollutant detection, manufacturing method and detection method |
| CN113418968A (en) * | 2021-06-01 | 2021-09-21 | 大连海事大学 | Cross capacitive sensor, manufacturing method of sensor and oil detection system |
| CN113533441A (en) * | 2021-07-19 | 2021-10-22 | 瑞得设备科技(江苏)有限公司 | Cross capacitance solenoid type sensor and preparation device and detection method thereof |
| CN114965184A (en) * | 2022-04-15 | 2022-08-30 | 大连海事大学 | Oil detection sensor based on LC passive wireless sensing and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243737A (en) * | 2019-07-30 | 2019-09-17 | 大连海事大学 | A kind of solenoid type hydraulic oil abrasive grain classified Monitoring device |
| CN110426426A (en) * | 2019-08-29 | 2019-11-08 | 大连海事大学 | Oil contaminant multi-parameter based on phase shift technology is detecting device integrated and method |
| CN112986344A (en) * | 2021-02-05 | 2021-06-18 | 大连海事大学 | Inductance-electric capacity fluid pollutant synchronous detection device |
| CN113267540A (en) * | 2021-04-28 | 2021-08-17 | 大连海事大学 | Embedded high gradient magnetic field oil multi-pollutant detection device |
| CN113325045A (en) * | 2021-05-14 | 2021-08-31 | 大连海事大学 | Bridge type capacitance measuring device for liquid pollutant detection, manufacturing method and detection method |
| CN113418968A (en) * | 2021-06-01 | 2021-09-21 | 大连海事大学 | Cross capacitive sensor, manufacturing method of sensor and oil detection system |
| CN113418968B (en) * | 2021-06-01 | 2023-02-21 | 大连海事大学 | Cross capacitive sensor, manufacturing method of sensor and oil detection system |
| CN113533441A (en) * | 2021-07-19 | 2021-10-22 | 瑞得设备科技(江苏)有限公司 | Cross capacitance solenoid type sensor and preparation device and detection method thereof |
| CN114965184A (en) * | 2022-04-15 | 2022-08-30 | 大连海事大学 | Oil detection sensor based on LC passive wireless sensing and manufacturing method thereof |
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