CN104132970B - Ferromagnetic particle detection sensor in lubricating oil in high precision - Google Patents
Ferromagnetic particle detection sensor in lubricating oil in high precision Download PDFInfo
- Publication number
- CN104132970B CN104132970B CN201410382436.1A CN201410382436A CN104132970B CN 104132970 B CN104132970 B CN 104132970B CN 201410382436 A CN201410382436 A CN 201410382436A CN 104132970 B CN104132970 B CN 104132970B
- Authority
- CN
- China
- Prior art keywords
- pcb board
- detection probe
- detection
- probe
- lubricating oil
- 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.)
- Expired - Fee Related
Links
Abstract
The invention discloses ferromagnetic particle detection sensor in a kind of high accuracy lubricating oil, including containing oil pocket, shell, detection probe, fixed block, Magnet, adapter and pcb board, described Sheng oil pocket is connected with shell, the bottom of described Sheng oil pocket arranges detection probe, this detection probe is connected with pcb board by fixed block, and this detection probe is electrically connected by linking probe and pcb board, Magnet is set between detection probe and pcb board, adapter is arranged on shell one end relative with containing oil pocket, pcb board is electrically connected with external circuit by adapter, the signal of detection is transferred to pcb board by linking probe by described detection probe, the signal that detection probe is detected by this pcb board is amplified, it is transferred to external circuit by adapter after detection and collection.Reach simple in construction, highly sensitive, low cost and the strong purpose of capacity of resisting disturbance.
Description
Technical field
The present invention relates to sensor field, in particular it relates to ferromagnetic particle detection sensor in a kind of high accuracy lubricating oil.
Background technology
Plant equipment lubricating oil is gradually mixed into substantial amounts of iron filings along with equipment runs up in equipment running process, and the friction being mixed into the equipment of exacerbating of iron filings, thus cause vicious cycle, aggravate equipment loss, reduce lubricant effect.Along with lubricating oil shows day by day in the operating effect of equipment, the most accurately detect ferromagnetic particle thing and increasingly come into one's own.In research that lubricating oil is deepened continuously, it has been found that shortly before wear out failure, wear rate or iron filings total amount can sharply increase and exceed certain level.
Iron filings analysis is by being analyzed iron filings contained by plant equipment lubricating oil, it is thus achieved that the information of wear and tear in machines situation, thus finds the detection of a kind of mechanical working condition and the fault diagnosis technology of accident potential in time.Iron filings analysis has multiple method, such as ferrum spectrometry, spectrographic method etc..And iron filings macroanalysis method is the most economic and practical the most relatively simple a kind of effective means.As long as the concentration of iron filings in lubricating oil can be detected, it is possible to according to the health status of the variation diagnostic equipment of its concentration, iron filings macroanalysis it is crucial that the equipment that can accurately measure scrap iron content should be had, and equipment it is crucial that its detection sensor.Existing lubricant iron magnetic-particle detection equipment mostly dependence on import, bulky, equipment cost is higher, is only suitable for laboratory environment application.And capacity of resisting disturbance is more weak during detection.
Summary of the invention
It is an object of the invention to, for the problems referred to above, propose ferromagnetic particle detection sensor in a kind of high accuracy lubricating oil, to realize simple in construction, highly sensitive, low cost and the strong advantage of capacity of resisting disturbance.
For achieving the above object, the technical solution used in the present invention is:
Ferromagnetic particle detection sensor in a kind of high accuracy lubricating oil, including containing oil pocket, shell, detection probe, fixed block, Magnet, adapter and pcb board, described Sheng oil pocket is connected with shell, the bottom of described Sheng oil pocket arranges detection probe, this detection probe is connected with pcb board by fixed block, and this detection probe is electrically connected by linking probe and pcb board, Magnet is set between detection probe and pcb board, adapter is arranged on shell one end relative with containing oil pocket, pcb board is electrically connected with external circuit by adapter, the signal of detection is transferred to pcb board by linking probe by described detection probe, the signal that detection probe is detected by this pcb board is amplified, it is transferred to external circuit by adapter after detection and collection.
Preferably, the circuit on described pcb board includes that operational amplifier, capacitance detecting chip and signal acquisition processing circuit, the information of described operational amplifier output are transferred to signal acquisition processing circuit after capacitance detecting chip.
Preferably, described signal acquisition processing circuit uses single-chip microcomputer Acquisition Circuit.
Preferably, described detection probe is for print a plurality of parallel wire in PCB, and this plurality of parallel wire forms capacitance group, and the surface coating of PCB.
Preferably, described Sheng oil pocket and shell junction use the 3rd sealing ring to seal.
Preferably, the first sealing ring is used to seal between described Sheng oil pocket and detection probe.
Preferably, the second sealing ring is used to seal between described detection probe and fixed block.
Preferably, described pcb board passes through epoxy sealing after installing.
Technical scheme has the advantages that
Technical scheme, the lubricating oil containing ferromagnetic particle is put in containing oil pocket, under the effect of Magnet, the ferromagnetic particle in lubricating oil is collected in around detection probe, so that the capacitance of detection probe changes, this capacitance is transferred to pcb board, capacitance is amplified, detects and gather by pcb board, thus completes the collection of data.This sensor construction is simple, highly sensitive and low cost.And pcb board is used epoxy sealing, reduce the interference to circuit of the external environment, strengthen the stability of system and play the effect of protection internal structure.Thus enhance the capacity of resisting disturbance of sensor.
Below by drawings and Examples, technical scheme is described in further detail.
Accompanying drawing explanation
Fig. 1 is ferromagnetic particle detection sensor construction schematic diagram in the high accuracy lubricating oil described in the embodiment of the present invention；
Fig. 2 is the structural representation of the detection probe described in the embodiment of the present invention；
Fig. 3 is the electrical principle block diagram of pcb board described in the embodiment of the present invention.
In conjunction with accompanying drawing, in the embodiment of the present invention, reference is as follows:
1. contain oil pocket；2. the first sealing ring；3. the second sealing ring；4. the 3rd sealing ring；5. shell；6. detection probe；7 fixed blocks；8. Magnet；9. linking probe；10.PCB plate；11. adapters；12,13. pad；14. operational amplifiers；15. capacitance detecting chips；16. signal acquisition processing circuits；17. PCB.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains the present invention, is not intended to limit the present invention.
nullAs shown in Figure 1，Ferromagnetic particle detection sensor in a kind of high accuracy lubricating oil，Including containing oil pocket 1、Shell 5、Detection probe 6、Fixed block 7、Magnet 8、Adapter 11 and pcb board 10，Contain oil pocket 1 to be connected with shell 5，The bottom containing oil pocket 1 arranges detection probe 6，This detection probe 6 is connected with pcb board 10 by fixed block 7，And this detection probe 6 is electrically connected by linking probe 9 and pcb board 10，Magnet 8 is set between detection probe 6 and pcb board 10，Adapter 11 is arranged on shell 5 one end relative with containing oil pocket 1，Pcb board 10 is electrically connected with external circuit by adapter 11，The signal of detection is transferred to pcb board 10 by linking probe 9 by detection probe 6，The signal that detection probe 6 is detected by this pcb board 10 is amplified、It is transferred to external circuit by adapter 11 after detection and collection.Pcb board 10 is by adapter 11 external power supply wire and numeral output line.
Preferably, the circuit on pcb board 10 includes that operational amplifier 14, capacitance detecting chip 15 and signal acquisition processing circuit 16, the information of operational amplifier output are transferred to signal acquisition processing circuit after capacitance detecting chip.
Signal acquisition processing circuit 16 uses single-chip microcomputer Acquisition Circuit.Data are passed to single-chip microcomputer Acquisition Circuit by IIC agreement by capacitance detecting chip, and single-chip microcomputer Acquisition Circuit is passed on peripheral bus by CAN interface.Pcb board passes through epoxy sealing after installing, and to reduce the interference to circuit of the external environment, strengthens the stability of system and plays the effect of protection internal structure.
Detection probe 6 is for print a plurality of parallel wire in PCB 17, and this plurality of parallel wire forms capacitance group, and the surface coating of PCB 17.Size can be done corresponding change, it is therefore an objective to optimize detection probe according to the testing requirement of ferromagnetic particle concentration in lubricating oil by capacitance group, it is ensured that pop one's head in sensitive to ferromagnetic particle.And surface coating, overlay film is relatively thin, to ensure the sensitivity of probe, simultaneously after surface coating, makes capacitance data more stable, reduces the error of sensor.PCB 17 is two pieces of different printed circuit boards with pcb board 10.
Contain oil pocket 1 and shell 5 junction uses the 3rd sealing ring 4 to seal.
Containing uses the first sealing ring 2 to seal between oil pocket 1 and detection probe 6.
The second sealing ring 3 is used to seal between detection probe 6 and fixed block 7.
Pcb board 10 passes through epoxy sealing after installing.
The body of sensor is columnar structures, and the body upper end of sensor is connected with containing oil pocket.The body lower end epoxy sealing of sensor, by adapter external power supply and CAN.
Technical scheme provides in a kind of portable high accuracy lubricating oil that can be applicable to wild environment ferromagnetic particle detection sensor, it is desirable to ferromagnetic particle can be detected to the sensor as ferromagnetic particle content >=5PPM in lubricating oil.
What sensor detection circuit employing was ripe is internally integrated chip, and high-accurate temperature measurement, standard capacitance, operational amplifier and comparator, adder related device are internally integrated, and decrease external interference, improve certainty of measurement.
The work process of pcb board 10: the pad 12,13 in detection probe 6 electrically connects with operational amplifier 14, thus the signal of detection probe collection is amplified and introduces capacitance detecting chip 15, the testing result of capacitance detecting chip 15 is input to signal acquisition processing circuit 16 by IIC agreement, uploads to external equipment by CAN protocol after treatment.
During detection, in order to guarantee accurately to measure the ferromagnetic particle content of trace in lubricating oil, generally measure the lubricating oil without ferromagnetic particle and the lubricating oil containing ferromagnetic particle by matching type, calculate the difference of two measurement data, judge the content of ferromagnetic particle in lubricating oil according to difference.The application of matching type, substantially reduces the measurement error of equipment, improves certainty of measurement.
Its operation principle is: detection probe 6 utilizes capacitance method to detect contact lubricated oil, and the structure of detection probe 6 takes into full account the trace of ferromagnetic particle content, and detection data are uploaded pcb board 10, then by adapter 11 based data output.Detection process wants the requirement of fully reference matching type.
In sum, technical solution of the present invention has the following characteristics that
Employing high precision test is popped one's head in, high sensitivity capacitive detection circuit, decrease the drift phenomenon during traditional capacitance detection, high to Microamount of Iron in Lubricating Oil magnetic-particle sensitivity, compared with existing ferromagnetic particle detection equipment, present configuration is simple, highly sensitive, stable performance, low cost, facilitate portable use.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention, although the present invention being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (6)
1. ferromagnetic particle detection sensor in a high accuracy lubricating oil, it is characterized in that, including containing oil pocket, shell, detection probe, fixed block, Magnet, adapter and pcb board, described Sheng oil pocket is connected with shell, the bottom of described Sheng oil pocket arranges detection probe, this detection probe is connected with pcb board by fixed block, and this detection probe is electrically connected by linking probe and pcb board, Magnet is set between detection probe and pcb board, adapter is arranged on shell one end relative with containing oil pocket, pcb board is electrically connected with external circuit by adapter, the signal of detection is transferred to pcb board by linking probe by described detection probe, the signal that detection probe is detected by this pcb board is amplified, it is transferred to external circuit by adapter after detection and collection；
Circuit on described pcb board includes that operational amplifier, capacitance detecting chip and signal acquisition processing circuit, the information of described operational amplifier output are transferred to signal acquisition processing circuit after capacitance detecting chip；
Described detection probe is for print a plurality of parallel wire in PCB, and this plurality of parallel wire forms capacitance group, and the surface coating of PCB.
Ferromagnetic particle detection sensor in high accuracy lubricating oil the most according to claim 1, it is characterised in that described signal acquisition processing circuit uses single-chip microcomputer Acquisition Circuit.
Ferromagnetic particle detection sensor in high accuracy lubricating oil the most according to claim 1 and 2, it is characterised in that described Sheng oil pocket and shell junction use the 3rd sealing ring to seal.
Ferromagnetic particle detection sensor in high accuracy lubricating oil the most according to claim 1 and 2, it is characterised in that use the first sealing ring to seal between described Sheng oil pocket and detection probe.
Ferromagnetic particle detection sensor in high accuracy lubricating oil the most according to claim 1 and 2, it is characterised in that use the second sealing ring to seal between described detection probe and fixed block.
Ferromagnetic particle detection sensor in high accuracy lubricating oil the most according to claim 1 and 2, it is characterised in that described pcb board passes through epoxy sealing after installing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382436.1A CN104132970B (en) | 2014-08-06 | 2014-08-06 | Ferromagnetic particle detection sensor in lubricating oil in high precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382436.1A CN104132970B (en) | 2014-08-06 | 2014-08-06 | Ferromagnetic particle detection sensor in lubricating oil in high precision |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104132970A CN104132970A (en) | 2014-11-05 |
| CN104132970B true CN104132970B (en) | 2016-08-17 |
Family
ID=51805733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410382436.1A Expired - Fee Related CN104132970B (en) | 2014-08-06 | 2014-08-06 | Ferromagnetic particle detection sensor in lubricating oil in high precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104132970B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973779A (en) * | 2016-05-12 | 2016-09-28 | 绍兴文理学院 | Method for monitoring wear particles on line by virtue of centrifugation, electric hammer adsorption and adjacent capacitance |
| CN111380927A (en) * | 2018-12-29 | 2020-07-07 | 北京致感致联科技有限公司 | Online grease detection sensor and detection method |
| CN111812305B (en) * | 2019-04-10 | 2022-12-27 | 北京致感致联科技有限公司 | On-line lubricating oil detection sensor |
| CN110926999B (en) * | 2019-12-12 | 2022-04-05 | 天津大学仁爱学院 | Machine oil ferromagnetic metal particle on-line measuring device |
| CN112345624A (en) * | 2020-10-27 | 2021-02-09 | 北京信息科技大学 | High-sensitivity metal wear particle detection sensor based on giant magnetoresistance effect |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2039831U (en) * | 1988-03-23 | 1989-06-21 | 中国人民解放军装甲兵工程学院 | Magnetic attraction strain type sensor for iron content |
| WO1992017772A1 (en) * | 1991-03-27 | 1992-10-15 | Kabushiki Kaisha Komatsu Seisakusho | Electrode structure of sensor for sensing metallic particles |
| JPH09318574A (en) * | 1996-05-27 | 1997-12-12 | Komatsu Ltd | Metal particle sensor and particle size measuring method |
| JPH09318576A (en) * | 1996-05-27 | 1997-12-12 | Komatsu Ltd | Apparatus for restoring electrode short-circuit of metal particle detection sensor and method therefor |
| CN2771858Y (en) * | 2005-02-23 | 2006-04-12 | 武汉理工大学 | Oil sample storage device for oil-hydraulic abrasive particle electomagnetic measurement |
| CN1815176A (en) * | 2006-02-10 | 2006-08-09 | 张超 | Piezoelectric sensor for on-line monitoring liquid viscosity and grain amount and measuring method |
| CN201034911Y (en) * | 2007-04-05 | 2008-03-12 | 张峰 | Portable oil-liquid iron magnelic properties abrasive grain amount and viscosity coefficient testing apparatus |
| CN102147230A (en) * | 2011-03-01 | 2011-08-10 | 北京工业大学 | Micro-inductance sensor used for detecting metal fragments in oil liquid |
| CN102243200A (en) * | 2011-05-05 | 2011-11-16 | 南京航空航天大学 | On-line monitoring sensor of lubricating oil |
| CN202486090U (en) * | 2012-03-14 | 2012-10-10 | 西安热工研究院有限公司 | Oil iron content online monitoring capacitance sensor |
| CN202947988U (en) * | 2012-08-21 | 2013-05-22 | 北京航峰科伟装备技术股份有限公司 | Capacitance sensor of portable type oil quality rapid analyzer |
-
2014
- 2014-08-06 CN CN201410382436.1A patent/CN104132970B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2039831U (en) * | 1988-03-23 | 1989-06-21 | 中国人民解放军装甲兵工程学院 | Magnetic attraction strain type sensor for iron content |
| WO1992017772A1 (en) * | 1991-03-27 | 1992-10-15 | Kabushiki Kaisha Komatsu Seisakusho | Electrode structure of sensor for sensing metallic particles |
| JPH09318574A (en) * | 1996-05-27 | 1997-12-12 | Komatsu Ltd | Metal particle sensor and particle size measuring method |
| JPH09318576A (en) * | 1996-05-27 | 1997-12-12 | Komatsu Ltd | Apparatus for restoring electrode short-circuit of metal particle detection sensor and method therefor |
| CN2771858Y (en) * | 2005-02-23 | 2006-04-12 | 武汉理工大学 | Oil sample storage device for oil-hydraulic abrasive particle electomagnetic measurement |
| CN1815176A (en) * | 2006-02-10 | 2006-08-09 | 张超 | Piezoelectric sensor for on-line monitoring liquid viscosity and grain amount and measuring method |
| CN201034911Y (en) * | 2007-04-05 | 2008-03-12 | 张峰 | Portable oil-liquid iron magnelic properties abrasive grain amount and viscosity coefficient testing apparatus |
| CN102147230A (en) * | 2011-03-01 | 2011-08-10 | 北京工业大学 | Micro-inductance sensor used for detecting metal fragments in oil liquid |
| CN102243200A (en) * | 2011-05-05 | 2011-11-16 | 南京航空航天大学 | On-line monitoring sensor of lubricating oil |
| CN202486090U (en) * | 2012-03-14 | 2012-10-10 | 西安热工研究院有限公司 | Oil iron content online monitoring capacitance sensor |
| CN202947988U (en) * | 2012-08-21 | 2013-05-22 | 北京航峰科伟装备技术股份有限公司 | Capacitance sensor of portable type oil quality rapid analyzer |
Non-Patent Citations (2)
| Title |
|---|
| A study of the effect of contaminant particles in lubricants using wear debris and vibration condition monitoring techniques;Z. Peng et al.;《Wear》;20051231;第258卷;第1651-1662页 * |
| An on-line ferromagnetic wear debris sensor for machinery condition monitoring and failure detection;K. W. CHAMBERS et al.;《Wear》;19881231;第128卷;第325-337页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104132970A (en) | 2014-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104132970B (en) | Ferromagnetic particle detection sensor in lubricating oil in high precision | |
| CN204422537U (en) | With the immunochromatographiassays assays instrument of centrifugal device | |
| CN106679841A (en) | Temperature detecting device and temperature detecting method | |
| CN103808911A (en) | Lubricating oil detection device | |
| CN104950096A (en) | Soil parameter detection equipment and method | |
| CN103675680B (en) | A kind of locomotive motor optical-electricity encoder detector and detection method | |
| MX360567B (en) | Apparatus and methods for reducing electrical shock hazard from biosensor meters. | |
| CN104155360A (en) | Pipeline-in detector signal activating and collecting device and pipeline defect detection method | |
| CN203164407U (en) | Ultrahigh-frequency partial discharge state detection instrument calibrating device | |
| CN202928609U (en) | Electric eddy current dynamometer test stand data acquisition system | |
| CN205120740U (en) | Motor rotational speed comprehensive testing system | |
| CN203216903U (en) | Steel wire rope harmless flaw detector based on PC (Personal Computer) | |
| CN203705439U (en) | Lubricating oil detecting device | |
| CN103076484B (en) | electrical test system and method | |
| CN204329943U (en) | A kind of device for detecting cylinder head valve sealing line and conduit concentricity | |
| CN106644828A (en) | Test system for testing comprehensive information of oil sample and method of test system | |
| CN105116212B (en) | The current detecting system and its method of GNSS module | |
| CN206576875U (en) | Blood oxygen measurement device | |
| CN205449716U (en) | Portable online richter scale sclerometer | |
| CN202814883U (en) | Device for detecting antitumor drugs | |
| CN103499320A (en) | Anchoring engineering quality detector and analysis method | |
| CN204142837U (en) | Portable online resistance conductance detector | |
| CN202975117U (en) | Capacitive-current separating apparatus for leakage current | |
| CN204330656U (en) | A kind of blood gas analyzer with W shape blood gas analysis room | |
| CN103743505A (en) | Acquisition method for automobile strain signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160426 Address after: 100055, Beijing, Guang'an, Xicheng District, No. 168, 1 Avenue, 12, 2-1501 Applicant after: Beijing Yuanrui Technology Co., Ltd. Address before: 100089, room 18, floor 21, No. 1812 West Third Ring Road, Beijing, Haidian District Applicant before: BEIJING HIGHCOM TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20180806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |