CN203443879U - Oil particle pollution degree detection sensor - Google Patents
Oil particle pollution degree detection sensor Download PDFInfo
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- CN203443879U CN203443879U CN201320510929.XU CN201320510929U CN203443879U CN 203443879 U CN203443879 U CN 203443879U CN 201320510929 U CN201320510929 U CN 201320510929U CN 203443879 U CN203443879 U CN 203443879U
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- detection sensor
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- degree detection
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Abstract
The utility model discloses an oil particle pollution degree detection sensor. The detection sensor comprises a sleeve, a semiconductor laser unit, a measuring probe, a photoelectric conversion circuit and a signal processing circuit, wherein a plurality of lenses are arranged between the measuring probe and the semiconductor laser unit; a nozzle assembly, a first sliding block, a second sliding block, a fixed joint and a set of lenses are arranged in the sleeve; and a fixed collimating lens is embedded in the nozzle assembly, the first sliding block is connected with the nozzle assembly, a filter lens is fixed on the first sliding block, a Fourier lens is fixed in the second sliding block, a flange joint is connected to the other end of the sleeve, the fixed joint is connected with the flange joint, and the set of lenses are arranged in the fixed joint and fixed in the fixed joint through a threaded connection assembly. The detection sensor is based on the photoelectric principle, through reasonable arrangement of various optical lenses, oil to be detected passes through an oil inlet channel gap between the set of lenses, and laser produces current signals at two ends of a reception diode after passing through a plurality of lenses. The sensor has excellent characteristics of simple optical path design and high measuring accuracy.
Description
Technical field
The utility model relates to a kind of sensor, especially a kind of sensor that is applied to fluid particle detection.
Background technology
Fluid is the actuating medium of hydraulic system, and working conditions such as hydraulic pump, oil motor, valve element and serviceable life are all closely related with the performance of hydraulic oil.In research, find solid particle in fluid be cause transmitted light decay this factor design the multiple method of testing to solid particle in fluid.
But employing light blockage method of the prior art is measured the method for oil particle pollution degree, all exist light path design complicated, the problem that measuring accuracy is not high.
Utility model content
The purpose of this utility model is to provide a kind of oil particle pollution degree detection sensor, and this oil particle pollution degree detection sensor has solved light blockage method in prior art and measured the problem that light path design is complicated, measuring accuracy is not high that oil-liquid-solid particle pollution degree has.
For achieving the above object, the utility model provides a kind of oil particle pollution degree detection sensor, described oil particle pollution degree detection sensor comprises: sleeve, semiconductor laser, measuring sonde, photoelectric switching circuit and signal processing circuit, in described sleeve, be provided with measuring sonde, between measuring sonde and semiconductor laser, be provided with some lens, in described sleeve, be provided with successively nozzle assembly, be arranged in described nozzle assembly and be embedded fixing collimating mirror, the first slide block being connected with nozzle assembly, on described the first slide block, be fixed with filter mirror, with the second slide block, be fixed on the fourier lense in described the second slide block, the other end of described sleeve is connected with bump joint, the fixture splice being connected with bump joint, also comprise one group of lens being located in described fixture splice, described one group of lens are fixed in fixture splice through screwed assembly.
Preferably, in described measuring sonde, be folded with respectively up and down a catch.
Preferably, the thickness of described catch is 0.45mm, is provided with the width d=0.5mm in oil-feed gap in catch.。
Preferably, the wavelength of described semiconductor laser is 650nm.
Preferably, one end of described sleeve is provided with the first cover plate, and is connected with the second cover plate with described fixture splice end.
As mentioned above, a kind of oil particle pollution degree detection sensor of the present utility model, comprise sleeve, semiconductor laser, measuring sonde, photoelectric switching circuit and signal processing circuit, in described sleeve, be provided with measuring sonde, between measuring sonde and semiconductor laser, be provided with some lens, by all kinds of optical lenses of rational layout and between distance, oil particle pollution degree detection sensor is based on photovoltaic principals, oil inlet passage gap at fluid to be detected through between one group of lens is passed through, laser arrives the two ends generation current signal of reception diode after a plurality of lens, the light path design that this oil particle pollution degree detection sensor has is simple, simple to operate and the high good characteristic of measuring accuracy.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the utility model is described in further detail;
Fig. 1 is a kind of oil particle pollution degree detection sensor structural drawing of the present utility model;
Fig. 2 is the local amplification assumption diagram in A place in Fig. 1;
Fig. 3 is the baffle structure figure of sandwiched in measuring sonde;
Fig. 4 is one group of optical mirror slip installation dimension figure in Fig. 1 oil particle pollution degree detection sensor;
Fig. 5 is the principle module map of a kind of oil particle pollution degree detection sensor of the present utility model;
In Fig. 1 to Fig. 5,
Sleeve 1, nozzle assembly 2, collimating mirror 3, the first slide block 4, filter mirror 5, the second slide block 6, fourier lense 7, bump joint 8, screwed assembly 9, fixture splice 10, the second cover plate 11, the first cover plate 12, one group of lens 13, catch 14.
Embodiment
By specific instantiation, embodiment of the present utility model is described below, those skilled in the art can understand other advantages of the present utility model and effect easily by the disclosed content of this instructions.The utility model can also be implemented or be applied by other different embodiment, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present utility model.
Shown in Fig. 1, it is a kind of assembly structure figure of oil particle pollution degree detection sensor, this oil particle pollution degree detection sensor comprises: sleeve 1, semiconductor laser, measuring sonde, photoelectric switching circuit and signal processing circuit, in described sleeve 1, be provided with measuring sonde, between measuring sonde and semiconductor laser, be provided with some lens, in described sleeve 1, be provided with successively nozzle assembly 2, be arranged in described nozzle assembly 2 and be embedded fixing collimating mirror 3, the first slide block 4 being connected with nozzle assembly 2, on described the first slide block 4, be fixed with filter mirror 5, with the second slide block 6, be fixed on the fourier lense 7 in described the second slide block 6, the other end of described sleeve 1 is connected with bump joint 8, the fixture splice 10 being connected with bump joint 8, also comprise one group of lens 13 being located in described fixture splice 10.Shown in Fig. 2, it is oil particle pollution degree detection sensor A place partial structurtes enlarged drawing in Fig. 1, described one group of lens 13 are fixed in fixture splice 10 through screwed assembly 9, one end of described sleeve 1 is provided with the first cover plate 12, and is connected with the second cover plate 11 with described fixture splice 10 ends.Described oil particle pollution degree detection sensor, based on photovoltaic principals, passes through through the oil inlet passage gap of 13, one group of lens at fluid to be detected, and laser arrives the two ends generation current signal of reception diode after a plurality of lens.
Please refer to shown in Fig. 3, it is the structural drawing of this catch 14, is folded with respectively up and down a catch 14 in described measuring sonde, and described catch 14 makes fluid also between one group of lens 13, have a fixing passage at measuring sonde on the one hand; On the other hand, two or more being superimposed of particle possibility due to the fluid passage of flowing through, thereby examined less particle and then formed error, the limiting error that overlaps in order to reduce this error as far as possible, and is considered the measurement concentration limit of particle in every milliliter of the fluid passage of flowing through simultaneously, preferably, the thickness of described catch 14 is 0.45mm, is provided with the d=0.5mm of minimum place of oil-feed gap width in catch 14, to realize particle in accurate fluid, detects.
Please refer to shown in Fig. 4, it is that in oil particle pollution degree detection sensor of the present utility model, one group of optical mirror slip is arranged size installation diagram: wherein, the distance L 1=0.5mm that lasing light emitter and collimating mirror are 3, and the wavelength of semiconductor laser is 650nm, semiconductor laser is a kind of with certain semiconductor material be stimulated device of transmitting effect of material two generations of working.Its principle of work is by certain energisation mode, between being with of semiconductor substance, or semiconductor substance can be with and impurity level between, the population that realizes nonequilibrium carrier is sent out and is turned, when sending out in population while turning a large amount of electronics of state and hole-recombination, just produce the transmitting effect that is stimulated, and semiconductor laser has advantages of that volume is little, lightweight, running is reliable, little power consumption and efficiency high; Collimating mirror 3 and filter mirror 5 spacing L2=15mm, wherein said collimating mirror 3 becomes directional light by divergent rays through it, and described collimating mirror 3 can be selected K9 glass, be designed to biconvex lens, wherein, radius of curvature R 1=-R2=15.54, focal length F=16.144, diameter D=6.47; The distance L 3=110mm that filter mirror 5 and fourier lense are 7, described filter mirror 5 detects required wavelength for filtering light wave to stay, and on material, can select K9 glass, is made as plano-convex cylindrical lens, radius of curvature R 1=20.72, focal length F=40, diameter D=6.32; Fourier lense 7 and described one group of lens, 13 spacing L4=18.5mm, the gap L 5=0.5mm of described one group of lens 13, that is to say the thickness of catch 14; Distance L 6=1mm between one group of lens 13 right side edge and receiver, fluid flows through from the very little clearance channel of 13, one group of lens, directional light is irradiated in the fluid passage in measuring sonde, by the light beam after the photoextinction of fluid passage particle, the photoelectric commutator forming through light activated element, by signal, compare impulse output circuit output pulse signal, after rolling counters forward circuit count, export pulse number.
Incorporated by reference to the principle module map of the oil particle pollution degree detection sensor shown in Fig. 5, the light that semiconductor laser sends becomes directional light through collimating mirror 3; Directional light filters through 5 pairs of laser of filter mirror, and making can be by the wavelength period being absorbed by fluid particle to be measured; Light after focusing on by fourier lense 7 arrives one group of lens 13; when fluid flows through from the oil inlet passage in the middle of one group of lens 13; solid particle in fluid can be projected on photodiode; wherein; described photoelectric switching circuit mainly comprises photodiode; according to actual demand, can also adopt other light activated elements, for example phototriode or silicon photocell.When the light intensity that lasing light emitter is penetrated weakened, the two ends generation current signal of photodiode is also weakened accordingly, by signal, compare impulse output circuit, the signal level of output is directly proportional to solid particle size, again through pulse-scaling circuit, detect and determine particles contained quantity in fluid, according to impulse level, can determine grain size.In theory, after having a grain flow, after processing, the late-class circuit of photodiode obtains a pulse, particle is larger, and signal voltage is also larger, when particle is wandered about as a refugee measuring sonde or measurement window along with fluid, signal just disappears, so can reflect the quantity of particle in fluid according to the number of pulse, according to the level of pulse, can reflect the size of particle, the utility model reflects that by above principle of work the size of solid particulate matter in fluid is with how many.
A kind of oil particle pollution degree detection sensor of the present utility model, comprise sleeve 1, semiconductor laser, measuring sonde, photoelectric switching circuit and signal processing circuit, in described sleeve 1, be provided with measuring sonde, between measuring sonde and semiconductor laser, be provided with some lens, by all kinds of optical lenses of rational layout and between distance, based on photovoltaic principals, at fluid to be detected, through the gap of the oil inlet passage of 13, one group of lens, pass through, laser arrives the two ends generation current signal of reception diode after a plurality of lens, the light path design that this oil particle pollution degree detection sensor has is simple, simple to operate and the high good characteristic of measuring accuracy.So the utility model has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (5)
1. an oil particle pollution degree detection sensor, comprise: sleeve, semiconductor laser, measuring sonde, photoelectric switching circuit and signal processing circuit, in described sleeve, be provided with measuring sonde, between measuring sonde and semiconductor laser, be provided with some lens, it is characterized in that, in described sleeve, be provided with successively nozzle assembly, be arranged in described nozzle assembly and be embedded fixing collimating mirror, the first slide block being connected with nozzle assembly, on described the first slide block, be fixed with filter mirror, with the second slide block, be fixed on the fourier lense in described the second slide block, the other end of described sleeve is connected with bump joint, the fixture splice being connected with bump joint, also comprise one group of lens being located in described fixture splice, described one group of lens are fixed in fixture splice through screwed assembly.
2. oil particle pollution degree detection sensor according to claim 1, is characterized in that, is folded with respectively up and down a catch in described measuring sonde.
3. oil particle pollution degree detection sensor according to claim 2, is characterized in that, the thickness of described catch is 0.45mm, is provided with the width d=0.5mm in oil-feed gap in catch.
4. oil particle pollution degree detection sensor according to claim 1, is characterized in that, the wavelength of described semiconductor laser is 650nm.
5. oil particle pollution degree detection sensor according to claim 1, is characterized in that, one end of described sleeve is provided with the first cover plate, and is connected with the second cover plate with described fixture splice end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320510929.XU CN203443879U (en) | 2013-08-20 | 2013-08-20 | Oil particle pollution degree detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320510929.XU CN203443879U (en) | 2013-08-20 | 2013-08-20 | Oil particle pollution degree detection sensor |
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| CN203443879U true CN203443879U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320510929.XU Expired - Fee Related CN203443879U (en) | 2013-08-20 | 2013-08-20 | Oil particle pollution degree detection sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387888A (en) * | 2015-12-10 | 2016-03-09 | 宜昌惠科科技有限公司 | Lens testing apparatus |
| CN106153102A (en) * | 2015-04-09 | 2016-11-23 | 北京中联电科技术有限公司 | A kind of multiparameter integration fluid sensor based on iraser technology |
| CN109959586A (en) * | 2019-04-09 | 2019-07-02 | 山东航天电子技术研究所 | The granule detecting method and system of suspended particulate in a kind of oil liquid |
-
2013
- 2013-08-20 CN CN201320510929.XU patent/CN203443879U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153102A (en) * | 2015-04-09 | 2016-11-23 | 北京中联电科技术有限公司 | A kind of multiparameter integration fluid sensor based on iraser technology |
| CN106153102B (en) * | 2015-04-09 | 2019-05-03 | 北京中联电科技术有限公司 | A kind of multi-parameter integration oil liquid sensor based on infrared laser technology |
| CN105387888A (en) * | 2015-12-10 | 2016-03-09 | 宜昌惠科科技有限公司 | Lens testing apparatus |
| CN109959586A (en) * | 2019-04-09 | 2019-07-02 | 山东航天电子技术研究所 | The granule detecting method and system of suspended particulate in a kind of oil liquid |
| CN109959586B (en) * | 2019-04-09 | 2021-09-10 | 山东航天电子技术研究所 | Method and system for detecting granularity of suspended particles in oil |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20140820 |
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| EXPY | Termination of patent right or utility model |