CN102680368A - On-line oil particle sensor based on inductance measurement - Google Patents
On-line oil particle sensor based on inductance measurement Download PDFInfo
- Publication number
- CN102680368A CN102680368A CN201210167540XA CN201210167540A CN102680368A CN 102680368 A CN102680368 A CN 102680368A CN 201210167540X A CN201210167540X A CN 201210167540XA CN 201210167540 A CN201210167540 A CN 201210167540A CN 102680368 A CN102680368 A CN 102680368A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- resistance
- inductance
- operational amplifier
- sensor
- 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.)
- Granted
Links
- 239000002245 particle Substances 0.000 title claims abstract description 52
- 238000005259 measurement Methods 0.000 title abstract description 17
- 230000003321 amplification Effects 0.000 claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 7
- 239000003990 capacitor Substances 0.000 claims description 84
- 238000012360 testing method Methods 0.000 claims description 58
- 239000012530 fluid Substances 0.000 claims description 23
- 238000009413 insulation Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 4
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 abstract description 7
- 239000002923 metal particle Substances 0.000 abstract 3
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 10
- 239000013528 metallic particle Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003862 health status Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses an on-line oil particle sensor based on inductance measurement. The on-line oil particle sensor comprises a sensor main body and a sensor measurement circuit arranged in the sensor main body, wherein the sensor measurement circuit comprises three parts, namely a voltage-stabilized power source part, a high frequency measurement part and a two-stage amplification part; the voltage-stabilized power source outputs 12 V and accesses to the high frequency measurement part and the second-stage operation amplifier power supply end of the two-stage amplification part; the voltage-stabilized power source outputs 5 V and accesses to the first-stage operation amplifier power supply end of the two-stage amplification part; and the high frequency measurement part outputs a signal and accesses to the signal input end of the two-stage amplification part. The high frequency measurement part generates high-frequency oscillations; when metal particles in oil flow through the measurement coil, the inductance of the measurement coil is increased, the oscillation frequency of the high frequency measurement circuit is reduced and the current of the oscillation circuit is increased; and when metal particles flow through the measurement coil, the high frequency measurement part returns to the original fixed-amplitude oscillation state. The on-line oil particle sensor can continuously monitor the distribution and generated velocity of metal particles of 10 micro in grain size on line, does not need cleaning, and avoids the internal accumulation of particles.
Description
Technical field
The present invention relates to online oil liquid monitoring field, particularly a kind of continuous coverage wear particle quantity, Size Distribution, particle produce the online fluid particle sensor of speed.
Background technology
Wearing and tearing are important indicators of reflection tribology system running state, have determined the health status and the military service performance of machine to a great extent, for this reason, have become the important content of machinery and equipment health status monitoring.
Canadian National Research Council (National Research Council) research shows that the wearing and tearing of being induced by particle account for 82% of wear-out failure; Include three types of fatigue, abrasive material and corrosion etc.; And non-particulate wearing and tearing of inducing have adhesion, fine motion and other wearing and tearing, but only account for 18%.Hence one can see that, and particle is not only the main cause of wearing and tearing, also is an important indicator of reflection equipment attrition state.Thereby abrasive particle quantity, Size Distribution, geometric shape become the efficient ways of a kind of monitoring tribology system wear state in the on-line continuous monitoring fluid, and realize the diagnosis and the military service performance evaluation of machine health status with this.
The online fluid particle sensor of widespread use at present mainly contains two types:
One type is that HIAC PM4000 series of products with U.S. Pacific Ocean scientific instrument company are the online particle collector of fluid of representative; Be used for monitoring in real time the granularity of various hydraulic pressure and lubricating system; The I of measurable abrasive particle particle diameter reaches 4 μ m; But its measurement result output form is the interval abrasive particle number of abrasive particle certain size; Its grit size interval division receives the precision of instrument itself and the restriction of port number, and the typical channel number is four, so the shortcoming of this type of sensor is that the accurate dimension that can not export abrasive particle in the fluid distributes.
Another kind of is that MetalSACN with Canadian GasTOP company is the online fluid particle sensor of representative.It is simple and reliable for structure, has been widely used in pipeline road, marine vessel industry at present, and power generation industries and related industries field have been proved to be effectively and the reliable detection instrument.But its measurement range only limits to big abrasive particle, and measurable minimum metal abrasive particle is 100 μ m, and minimum nonmetal abrasive particle is 405 μ m; And its measuring accuracy receives the successional influence of abrasive particle.
In typical case, gear case gear pair normal wear grit size is lower than 15 μ m at length direction, and is most of below 2 μ m; The size of overload wear abrasive particle depends on the overload degree, can reach 1mm at length direction, and the initial stage overload produces 150 μ m or slightly little abrasive particle.The grit size scope of wearing and tearing of overrunning is below the 150 μ m; The fatigue wear grit size can reach 150 μ m at length direction, mainly drops in 15 ~ 25 mu m ranges greater than the big abrasive particle of 15 μ m.Gear case rolling bearing normal wear stratiform grit size is 10 ~ 30 μ m in the longitudinal direction; The sheet grit size that fatigue wear produces drops in the scope of 15 ~ 20 μ m below 150 μ m mostly.Gear case sliding contact normal wear, overload wear abrasive particle characteristic and gear wear abrasive particle feature class are seemingly; The wear debris size of overrunning depends on the degree of overrunning, and can reach 1mm on the length direction.Above-mentioned seeing for details " Hu Yuanzhe, the recognition feature of gear case abrasive particle on iron spectrum sheet. lubricated and sealing, 2006 (3): the 148-150 page or leaf. "
Hence one can see that, and generally below 10 μ m, the above abrasive particle of 10 μ m has been forgiven the sufficient state of wear information of tribology system to the normal wear grit size of most of pair of friction components.Above-mentioned two types of sensors perhaps can't be realized the measurement of single grit size, perhaps can't measure near the little abrasive particle of 10 μ m.Therefore, can fast, accurately monitor 10 μ m and above abrasive particle in the fluid, most important to the monitoring of the state of wear of pair of friction components.
Summary of the invention
In order to overcome the defective of above-mentioned prior art; The object of the present invention is to provide a kind of online fluid particle sensor of measuring based on inductance value; Can effectively detect the metallic particles of minimum 10 μ m in the fluid; For online wear condition monitoring provides effective technical means, has simple in structure, reliable characteristics.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A kind of online fluid particle sensor of measuring based on inductance value comprises sensor main body and is installed in its inner sensor test circuit;
Sensor main body comprises base plate 1, left joint 2, shell 3, insulation oil pipe 4, test coil 6, right connector 7, test circuit 9; Left side joint 2, right connector 7, test circuit 9 are fixed on the base plate 1 respectively through being threaded; Insulation oil pipe 4 is adhered on left joint 2 and the right connector 7 through the transition fit two ends; Be respectively equipped with standard thread hole 8 on a left side joint 2 and the right connector 7 and be used to be connected rapid-acting coupling, have a circular hole 5 on the shell 3, be used to draw sensor internal power lead and signal wire; Test coil 6 be enameled wire on insulation oil pipe 4 in the direction of the clock spiral twine 2.5 circles, test coil 6 two ends are respectively welded to capacitor C 4 two ends of test circuit 9;
The sensor test circuit comprises that stabilized voltage supply, high-frequency test and two-stage amplify three parts, stabilized voltage supply input termination direct current 24V power supply, and stabilized voltage supply output 12V inserts the second level operational amplifier power end of high-frequency test part and two-stage amplification; Stabilized voltage supply output 5V connects the first order operational amplifier power end of two-stage amplifier section, and high-frequency test output signal connects two-stage amplifying signal input end.
Described stabilized voltage supply partly comprises diode D1; Resistance R 1, capacitor C 1, capacitor C 2, capacitor C 3, three-terminal voltage-stabilizing pipe U1, three-terminal voltage-stabilizing pipe U2; Diode D1 positive pole meets 24V D.C. regulated power supply VCC; The end of negative pole connecting resistance R1, the input end of resistance R 1 another termination three-terminal voltage-stabilizing pipe U1 and three-terminal voltage-stabilizing pipe U2, capacitor C 1 is connected to input end and the ground of three-terminal voltage-stabilizing pipe U2; Capacitor C 2 is connected to output terminal and the ground of three-terminal voltage-stabilizing pipe U1, and capacitor C 3 is connected to output terminal and the ground of three-terminal voltage-stabilizing pipe U2.
Said high-frequency test partly comprises: resistance R 2, resistance R 3, resistance R 4, resistance R 5, inductance L 1, inductance L 2, capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 8, triode Q1; Inductance L 2 is test coil 6, the two ends of the corresponding test coil of two terminals of inductance L 2, and capacitor C 4 composes in parallel frequency selection network with inductance L 2, with the collector of a termination triode Q1 after the parallel connection; Another termination inductance L 1, its effect is a high frequency choke, between the other end of inductance L 1 and the base stage of triode and connecting resistance R2; Node between capacitor C 5 one termination inductance L 1 and the capacitor C 4, the base stage of another termination triode Q1, resistance R 4 one end ground connection; The emitter of another termination triode Q1, the base stage of capacitor C 6 one termination triodes, other end ground connection; Resistance R 3 one end ground connection, the base stage of another termination triode Q1, capacitor C 7 is connected to resistance R 4 two ends; Capacitor C 8 be attempted by capacitor C 7 two ends after resistance R 5 is connected, capacitor C 8 one end ground connection wherein, the output signal is taken from capacitor C 8 voltage.
Described two-stage amplifier section comprises operational amplifier U3A, operational amplifier U4A, capacitor C 9, capacitor C 10, capacitor C 11, resistance R 6, electric capacity R7, electric capacity R8, electric capacity R9, electric capacity R10, electric capacity R11, electric capacity R12; Capacitor C 9 one termination high-frequency test part output signals; Another termination operational amplifier U3A in-phase input end, connecting resistance R6 between operational amplifier U3A in-phase input end and the ground, connecting resistance R7 between inverting input and the ground; Connect capacitor C 10 between inverting input and the output terminal; Capacitor C 10 two ends and connecting resistance R8 connect capacitor C 11 between the in-phase input end of the output terminal of operational amplifier U3A and operational amplifier U4A, connecting resistance R9 between the in-phase input end of operational amplifier U4A and the ground; Connecting resistance R10 between the inverting input of operational amplifier U4A and the ground; Connecting resistance R11 between the inverting input of operational amplifier U4A and the output terminal, operational amplifier output terminal connecting resistance R12, signal is exported from resistance R 12 other ends.
The present invention compares with existing fluid particle sensor, and following advantage is arranged:
1, the accurate dimension of simple and reliable for structure, small size, micrometeor on-line continuous monitoring metallic particles distributes and particle produces speed.
2, test coil on the insulation oil pipe in the direction of the clock spiral twine 2.5 circles, it can measure the minimum metal grain diameter is 10 μ m.
3, do not need to clean, sensor internal is difficult for packed particle.
Description of drawings
Fig. 1 is a main body cut-open view of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is that stabilized voltage supply of the present invention partly connects synoptic diagram;
Fig. 4 is that high-frequency test of the present invention partly connects synoptic diagram;
Fig. 5 is that two-stage amplifier section of the present invention connects synoptic diagram;
Fig. 6 is the typical abrasive particle signal that the present invention is based on the online fluid particle sensor of inductance value measurement.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and principle of work are described in detail.
A kind of online fluid particle sensor of measuring based on inductance value comprises sensor main body and is installed in its inner sensor test circuit;
With reference to Fig. 1; Sensor main body comprises base plate 1, left joint 2, shell 3, insulation oil pipe 4, test coil 6, right connector 7, test circuit 9; Left side joint 2, right connector 7, test circuit 9 are fixed on the base plate 1 respectively through being threaded; Insulation oil pipe 4 is adhered on left joint 2 and the right connector 7 through the transition fit two ends, is respectively equipped with the standard thread hole on left joint 2 and the right connector 7 and is used to be connected rapid-acting coupling, and shell 3 is fixed on the base plate 1 through being threaded; Have a circular hole 5 on the shell 3; Be used to draw sensor internal power lead and signal wire, test coil 6 be enameled wire on insulation oil pipe 4 in the direction of the clock spiral twine 2.5 circles, test coil 6 two ends are respectively welded to capacitor C 4 two ends of test circuit 9.
With reference to Fig. 2, shell 3 is fixed on the base plate 1 through being threaded.
The sensor test circuit comprises that stabilized voltage supply, high-frequency test and two-stage amplify three parts, stabilized voltage supply input termination direct current 24V power supply, and stabilized voltage supply output 12V inserts the second level operational amplifier power end of high-frequency test part and two-stage amplification; Stabilized voltage supply output 5V connects the first order operational amplifier power end of two-stage amplifier section, and high-frequency test output signal connects two-stage amplifying signal input end.
With reference to Fig. 3, described stabilized voltage supply partly comprises diode D1, resistance R 1; Capacitor C 1, capacitor C 2, capacitor C 3; Three-terminal voltage-stabilizing pipe U1, three-terminal voltage-stabilizing pipe U2, diode D1 positive pole meets 24V D.C. regulated power supply VCC, the end of negative pole connecting resistance R1; The input end of resistance R 1 another termination three-terminal voltage-stabilizing pipe U1 and three-terminal voltage-stabilizing pipe U2; Capacitor C 1 is connected to input end and the ground of three-terminal voltage-stabilizing pipe U2, and capacitor C 2 is connected to output terminal and the ground of three-terminal voltage-stabilizing pipe U1, and capacitor C 3 is connected to output terminal and the ground of three-terminal voltage-stabilizing pipe U2.
With reference to Fig. 4, said high-frequency test partly comprises: resistance R 2, resistance R 3, resistance R 4, resistance R 5, inductance L 1, inductance L 2, capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 8; Triode Q1, inductance L 2 is test coil 6, the two ends of the corresponding test coil of two terminals of inductance L 2, capacitor C 4 composes in parallel frequency selection network with inductance L 2; With the collector of a termination triode Q1 after the parallel connection, another termination inductance L 1, its effect is a high frequency choke, between the other end of inductance L 1 and the base stage of triode and connecting resistance R2; Node between capacitor C 5 one termination inductance L 1 and the capacitor C 4, the base stage of another termination triode Q1, resistance R 4 one end ground connection; The emitter of another termination triode Q1, the base stage of capacitor C 6 one termination triodes, other end ground connection; Resistance R 3 one end ground connection, the base stage of another termination triode Q1, capacitor C 7 is connected to resistance R 4 two ends; Capacitor C 8 be attempted by capacitor C 7 two ends after resistance R 5 is connected, capacitor C 8 one end ground connection wherein, the output signal is taken from capacitor C 8 voltage.
With reference to Fig. 5, described two-stage amplifier section comprises operational amplifier U3A, operational amplifier U4A, capacitor C 9, capacitor C 10, capacitor C 11; Resistance R 6, electric capacity R7, electric capacity R8, electric capacity R9, electric capacity R10, electric capacity R11, electric capacity R12, capacitor C 9 one termination high-frequency test part output signals, another termination operational amplifier U3A in-phase input end; Connecting resistance R6 between operational amplifier U3A in-phase input end and the ground; Connecting resistance R7 between inverting input and the ground connects capacitor C 10 between inverting input and the output terminal, capacitor C 10 two ends and connecting resistance R8; Connect capacitor C 11 between the in-phase input end of the output terminal of operational amplifier U3A and operational amplifier U4A; Connecting resistance R9 between the in-phase input end of operational amplifier U4A and the ground, connecting resistance R10 between the inverting input of operational amplifier U4A and the ground, connecting resistance R11 between the inverting input of operational amplifier U4A and the output terminal; Operational amplifier output terminal connecting resistance R12, signal is exported from resistance R 12 other ends.
Principle of work of the present invention: sensor inserts the 24V direct supply, and 12V is partly exported in the voltage stabilizing of sensor test circuit and 5V is that high-frequency test and two-stage amplifier section provide energy, and high-frequency test partly produces the higher-order of oscillation; When the metallic particles in the fluid is flowed through test coil; Make that the quantitative change of test coil inductance is big, high-frequency test circuit oscillation frequency diminishes, and the oscillation circuit electrorheological is big; When metallic particles flow through test coil, high-frequency test partly came back to original fixed ampllitude oscillatory regime.Therefore, in fluid, have abrasive Flow out-of-date, high-frequency test part output pulse signal is enlarged into 0-10V through the two-stage amplifying circuit, a pulse signal amplitude representative size.
With reference to shown in Figure 6, typical abrasive particle signal of the present invention, pulse amplitude is represented the size of abrasive particle.Typical case's fluid particle on-line monitoring scheme:
1, builds auxiliary oil circuit: by micro pump the fluid circulation power is provided, monitored fluid is introduced into micro pump from fuel tank, export sensor left side joint 2 to by micro pump again, get back to fuel tank by 6 outputs of sensor right connector.
2, test system building: the 24V D.C. regulated power supply is connected to the probe power input end, and the sensor output terminal inserts data collecting card with differential mode, and data acquisition is a digital signal input PC with the analog signal conversion of this sensor output.
3, realize on-line testing: gather experimental data, calculate the pulse signal amplitude and obtain grain size, granule content in the record oil obtains accurate amounts of particles, particle size distribution and particle and produces speed, realizes the continuous on-line monitoring of particle in the oil.
Claims (4)
1. an online fluid particle sensor of measuring based on inductance value comprises sensor main body and is installed in its inner sensor test circuit, it is characterized in that:
Sensor main body comprises base plate (1), left joint (2), shell (3), insulation oil pipe (4), test coil (6), right connector (7), test circuit (9); Left side joint (2), right connector (7), test circuit (9) are individually fixed on the base plate (1); Insulation oil pipe (4) is adhered on left joint (2) and the right connector (7) through the transition fit two ends; Be respectively equipped with the standard thread hole on left side joint (2) and the right connector (7); Have a circular hole (5) on the shell (3); Be used to draw sensor internal power lead and signal wire, test coil (6) be enameled wire on insulation oil pipe (4) in the direction of the clock spiral twine 2.5 circles, test coil (6) two ends are respectively welded to capacitor C 4 two ends of test circuit (9);
The sensor test circuit comprises that stabilized voltage supply, high-frequency test and two-stage amplify three parts, stabilized voltage supply input termination direct current 24V power supply, and stabilized voltage supply output 12V inserts the second level operational amplifier power end of high-frequency test part and two-stage amplification; Stabilized voltage supply output 5V connects the first order operational amplifier power end of two-stage amplifier section, and high-frequency test output signal connects two-stage amplifying signal input end.
2. a kind of online fluid particle sensor of measuring based on inductance value according to claim 1, it is characterized in that: described stabilized voltage supply partly comprises diode D1, resistance R 1; Capacitor C 1, capacitor C 2, capacitor C 3; Three-terminal voltage-stabilizing pipe U1, three-terminal voltage-stabilizing pipe U2, diode D1 positive pole meets 24V D.C. regulated power supply VCC, the end of negative pole connecting resistance R1; The input end of resistance R 1 another termination three-terminal voltage-stabilizing pipe U1 and three-terminal voltage-stabilizing pipe U2; Capacitor C 1 is connected to input end and the ground of three-terminal voltage-stabilizing pipe U2, and capacitor C 2 is connected to output terminal and the ground of three-terminal voltage-stabilizing pipe U1, and capacitor C 3 is connected to output terminal and the ground of three-terminal voltage-stabilizing pipe U2.
3. a kind of online fluid particle sensor of measuring based on inductance value according to claim 1, it is characterized in that: said high-frequency test partly comprises: resistance R 2, resistance R 3, resistance R 4, resistance R 5, inductance L 1, inductance L 2; Capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 8, triode Q1, inductance L 2 is test coil 6; The two ends of the corresponding test coil of two terminals of inductance L 2, capacitor C 4 composes in parallel frequency selection network with inductance L 2, with the collector of a termination triode Q1 after the parallel connection; Another termination inductance L 1, its effect is a high frequency choke, between the other end of inductance L 1 and the base stage of triode and connecting resistance R2; Node between capacitor C 5 one termination inductance L 1 and the capacitor C 4, the base stage of another termination triode Q1, resistance R 4 one end ground connection; The emitter of another termination triode Q1, the base stage of capacitor C 6 one termination triodes, other end ground connection; Resistance R 3 one end ground connection, the base stage of another termination triode Q1, capacitor C 7 is connected to resistance R 4 two ends; Capacitor C 8 be attempted by capacitor C 7 two ends after resistance R 5 is connected, capacitor C 8 one end ground connection wherein, the output signal is taken from capacitor C 8 voltage.
4. a kind of online fluid particle sensor of measuring based on inductance value according to claim 1; It is characterized in that: described two-stage amplifier section comprises operational amplifier U3A, operational amplifier U4A, capacitor C 9, capacitor C 10, capacitor C 11, resistance R 6, electric capacity R7, electric capacity R8, electric capacity R9, electric capacity R10, electric capacity R11, electric capacity R12; Capacitor C 9 one termination high-frequency test part output signals; Another termination operational amplifier U3A in-phase input end, connecting resistance R6 between operational amplifier U3A in-phase input end and the ground, connecting resistance R7 between inverting input and the ground; Connect capacitor C 10 between inverting input and the output terminal; Capacitor C 10 two ends and connecting resistance R8 connect capacitor C 11 between the in-phase input end of the output terminal of operational amplifier U3A and operational amplifier U4A, connecting resistance R9 between the in-phase input end of operational amplifier U4A and the ground; Connecting resistance R10 between the inverting input of operational amplifier U4A and the ground; Connecting resistance R11 between the inverting input of operational amplifier U4A and the output terminal, operational amplifier output terminal connecting resistance R12, signal is exported from resistance R 12 other ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210167540.XA CN102680368B (en) | 2012-05-25 | 2012-05-25 | On-line oil particle sensor based on inductance measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210167540.XA CN102680368B (en) | 2012-05-25 | 2012-05-25 | On-line oil particle sensor based on inductance measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102680368A true CN102680368A (en) | 2012-09-19 |
| CN102680368B CN102680368B (en) | 2014-07-23 |
Family
ID=46812631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210167540.XA Expired - Fee Related CN102680368B (en) | 2012-05-25 | 2012-05-25 | On-line oil particle sensor based on inductance measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102680368B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471969A (en) * | 2013-09-12 | 2013-12-25 | 浙江中欣动力测控技术有限公司 | Method for evaluating performance of sensor for monitoring metal particles in flowing oil liquid on line |
| CN105588873A (en) * | 2016-03-18 | 2016-05-18 | 中国计量学院 | Externally-passing type low frequency electromagnetic testing device |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN109630502A (en) * | 2018-12-28 | 2019-04-16 | 大连海事大学 | A kind of multi-parameter oil liquid comprehensive detection device and preparation method thereof |
| CN109738338A (en) * | 2019-02-12 | 2019-05-10 | 重庆邮电大学 | A kind of online metallic particles monitoring device of heavy caliber lubricant passage way and its detection method |
| CN110231396A (en) * | 2019-05-31 | 2019-09-13 | 西安交通大学 | Abrasive grain based on the vortex-like coil penetration measurement of plane monitors sensor on-line |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2548147Y (en) * | 2002-05-28 | 2003-04-30 | 成都精新粉体测试设备有限公司 | Resistance-type grain-distribution detection instrument |
| CN101251395A (en) * | 2008-04-02 | 2008-08-27 | 罗放明 | Mineral slurry flux on-line detecting device and multi-parameter on-line detecting integrated system |
| US20110124269A1 (en) * | 2009-07-16 | 2011-05-26 | Mitsuo Tada | Eddy current sensor and polishing method and apparatus |
| CN102159934A (en) * | 2008-09-26 | 2011-08-17 | 株式会社堀场制作所 | Device for measuring physical property of particle |
| CN102192949A (en) * | 2010-02-02 | 2011-09-21 | 独立行政法人理化学研究所 | Differential mobility analyzer, particle measuring system, and particle sorting system |
-
2012
- 2012-05-25 CN CN201210167540.XA patent/CN102680368B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2548147Y (en) * | 2002-05-28 | 2003-04-30 | 成都精新粉体测试设备有限公司 | Resistance-type grain-distribution detection instrument |
| CN101251395A (en) * | 2008-04-02 | 2008-08-27 | 罗放明 | Mineral slurry flux on-line detecting device and multi-parameter on-line detecting integrated system |
| CN102159934A (en) * | 2008-09-26 | 2011-08-17 | 株式会社堀场制作所 | Device for measuring physical property of particle |
| US20110124269A1 (en) * | 2009-07-16 | 2011-05-26 | Mitsuo Tada | Eddy current sensor and polishing method and apparatus |
| CN102192949A (en) * | 2010-02-02 | 2011-09-21 | 独立行政法人理化学研究所 | Differential mobility analyzer, particle measuring system, and particle sorting system |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471969A (en) * | 2013-09-12 | 2013-12-25 | 浙江中欣动力测控技术有限公司 | Method for evaluating performance of sensor for monitoring metal particles in flowing oil liquid on line |
| CN103471969B (en) * | 2013-09-12 | 2016-01-06 | 浙江中欣动力测控技术有限公司 | A kind of appraisal procedure of flowing oil metal particle on-line monitoring sensor performance |
| CN105588873A (en) * | 2016-03-18 | 2016-05-18 | 中国计量学院 | Externally-passing type low frequency electromagnetic testing device |
| CN105588873B (en) * | 2016-03-18 | 2019-04-19 | 中国计量学院 | A kind of outer through mode low frequency electromagnetic detection device |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN109630502A (en) * | 2018-12-28 | 2019-04-16 | 大连海事大学 | A kind of multi-parameter oil liquid comprehensive detection device and preparation method thereof |
| CN109630502B (en) * | 2018-12-28 | 2021-02-12 | 大连海事大学 | Multi-parameter oil comprehensive detection device and manufacturing method thereof |
| CN109738338A (en) * | 2019-02-12 | 2019-05-10 | 重庆邮电大学 | A kind of online metallic particles monitoring device of heavy caliber lubricant passage way and its detection method |
| CN110231396A (en) * | 2019-05-31 | 2019-09-13 | 西安交通大学 | Abrasive grain based on the vortex-like coil penetration measurement of plane monitors sensor on-line |
| CN110231396B (en) * | 2019-05-31 | 2021-03-16 | 西安交通大学 | Abrasive particle on-line monitoring sensor based on planar vortex coil penetration measurement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102680368B (en) | 2014-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102680368B (en) | On-line oil particle sensor based on inductance measurement | |
| US4731578A (en) | Electrical sensing system for measuring ferrous particles within a fluid | |
| CN103808911A (en) | Lubricating oil detection device | |
| CN105352420A (en) | TBM hobbing cutter wear online real-time monitoring device and monitoring method | |
| CN108152361B (en) | Online engine oil metal abrasive particle and temperature integrated monitoring device and method | |
| CN205228983U (en) | Metering device of tank wagon crude oil and crude oil water content | |
| CN202947989U (en) | Spiral electrode capacitive sensor | |
| CN102519851A (en) | Capacitor type on-line iron spectrum detector | |
| CN105300853A (en) | Series resonance type oil liquid metal particle measurement apparatus and series resonance type oil liquid metal particle measurement method | |
| CN105738259B (en) | A kind of online heavy caliber oil return pipe fluid metal worn particle monitoring device and method | |
| CN102175579B (en) | Device for monitoring pollution degree of lubricating oil particles according to vibration characteristic | |
| CN107218984B (en) | Online diagnosis system and method for natural gas turbine flowmeter | |
| CN215375412U (en) | Industrial equipment lubricating oil state monitoring system | |
| CN108254029A (en) | Magnetoelectric induction continuous impulse wave pick-up device and measuring method | |
| CN111443113A (en) | Electrical tomography (ET for short) two-phase flow measuring system | |
| CN109654990B (en) | Continuous oil pipe wall thickness online measurement probe based on pulse ACFM | |
| CN202001276U (en) | Energy efficiency ratio measurement equipment of air compressor, air compressor and compressed air cost calculator | |
| CN207147558U (en) | A kind of binary channels wide-range than flowmeter | |
| CN203705439U (en) | Lubricating oil detecting device | |
| CN101608941B (en) | Intelligent magnetic vortex flow detection control system | |
| Shirazi et al. | Sand monitor evaluation in multiphase flow | |
| CN204903334U (en) | Fluid characteristic sensor module | |
| CN210979298U (en) | Low flow detection sensor | |
| CN201210061Y (en) | Intelligent magnetic whirlpool flow detection and control system | |
| CN205607437U (en) | Integration density liquid level temperature measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210414 Address after: No. 726-727, building 17, cotton apartment, Guodu Street office, Chang'an District, Xi'an City, Shaanxi Province, 710100 Patentee after: Xi'an Yongze Huazheng Information Technology Co.,Ltd. Address before: 710048 No. 28, Xianning Road, Xi'an, Shaanxi Patentee before: XI'AN JIAOTONG University |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 |