CN105136278B - A kind of bearing arrangement acoustic fault detection means - Google Patents
A kind of bearing arrangement acoustic fault detection means Download PDFInfo
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- CN105136278B CN105136278B CN201510450084.3A CN201510450084A CN105136278B CN 105136278 B CN105136278 B CN 105136278B CN 201510450084 A CN201510450084 A CN 201510450084A CN 105136278 B CN105136278 B CN 105136278B
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Abstract
A kind of bearing arrangement acoustic fault detection means, belong to fault detection technique field, it is characterized in that acoustic sensor and acceleration transducer are combined as a whole use, the sound and vibration signal of low frequency is detected with the stronger acceleration transducer of antijamming capability, the electret capacitor acoustic sensor detection larger to the sound and vibration signal bandwidth of high frequency and intermediate frequency, with reference to bearing temperature real-time processing data, identify bearing fault, and fault-signal is timely transmitted to staff with 3G wireless transport modules, the failure in bearing each stage can be identified, analyzing and processing in real time, radio alarming, with compact-sized, the advantages that easy for installation.
Description
Technical field
A kind of bearing arrangement acoustic fault detection means of the present invention, belongs to fault detection technique field, and the device is by acoustics
Sensor and acceleration transducer are combined as a whole uses, to the sound and vibration signal stronger acceleration biography of antijamming capability of low frequency
Sensor detects, the electret capacitor acoustic sensor larger to the sound and vibration signal bandwidth of high frequency and intermediate frequency detection, with reference to bearing
Temperature real-time processing data, bearing fault is identified, and fault-signal is timely transmitted to staff with 3G wireless transport modules,
The on-line monitoring and radio alarming to bearing arrangement failure can be achieved.
Background technology
In rotating machinery, bearing is crucial basic components, but the problem of presently, there are be bearing fault rate it is higher,
Bearing fault turns into one of failure main in machine driving, and the continuous operation to plant equipment unit and safety in production band
Carry out extreme influence.Therefore, the running status of real-time monitoring bearing, failure is diagnosed and alarmed in advance, reduced and shut down phenomenon
The probability occurred with accident, safeguards parts of bearings in time, and change disorderly closedown is realized into planned shut-down, and to bearing running status
Wireless remote monitering, have great importance.
The phenomenon of early stage is that first ultrasonic feature frequency occur in high band when bearing breaks down, afterwards when bearing occurs gently
During micro-damage, characteristic frequency slowly shifts to Mid Frequency, and when significantly damaging has occurred in bearing, characteristic frequency just appears in low
Frequency part, now temperature start significantly to rise.Existing bearing fault detection device is more using acceleration transducer measurement bearing
Vibration signal, and acceleration transducer can only measure single vibration signal, only bearing failure than it is more significant when
Failure can be found, therefore maintenance to bearing and the planned shut-down of equipment bring difficulty.
The content of the invention
A kind of bearing arrangement acoustic fault detection means of the present invention, its object is to solve existing bearing fault detection device
The drawbacks of, a kind of acoustic sensor detection bearing sound and vibration signal integrated with acceleration transducer is disclosed, with reference to bearing temperature, is led to
Cross signal transacting and analyze bearing fault in real time, and with 3G wireless transport module transmission of monitoring data and the bearing arrangement of fault-signal
The technical scheme of acoustic fault detection means, the failure in bearing each stage can be identified the program, in real time at analysis
Reason, radio alarming, have the advantages that compact-sized, easy for installation.
A kind of bearing arrangement acoustic fault detection means of the present invention, it is characterised in that by acoustic sensor and acceleration sensing
Device is combined as a whole use, and the sound and vibration signal of low frequency is detected with acceleration transducer, and the sound and vibration signal of high frequency and intermediate frequency is used
Electret capacitor acoustic sensor detects, and with reference to bearing temperature real-time processing data, identifies bearing fault, and be wirelessly transferred with 3G
Fault-signal is timely transmitted to staff by module.A whole set of bearing arrangement acoustic fault detection means 1 is by measurement apparatus and letter
Number process circuit two parts composition.Described measuring device part includes electret capacitor acoustic sensor 2,3-axis acceleration passes
Sensor 3, the first temperature sensor 7, first circuit board 4, second circuit board 9, tertiary circuit plate 10, the 4th circuit board 11, industry
Level 3G transport modules 15, bearing arrangement acoustic fault detection means shell 16, T-shaped threeway Aviation Connector 20 and second temperature sensing
Device 21 forms, and wherein electret capacitor acoustic sensor 2 uses sheet metal using the sound and vibration signal of the method measurement bearing of contact
Sensor probe is fixed on bearing arrangement acoustic fault detection means shell 16 with screw, output end passes through binding post 17
It is connected on the 4th circuit board 11,3-axis acceleration sensor 3 is welded on first circuit board 4, and 3-axis acceleration is passed
Sensor 3 is clinged with one layer of AB glue 5 and bearing arrangement acoustic fault detection means shell 16, beneficial to the conduction of vibration signal, then is used
First circuit board 4 is fixed on bearing arrangement acoustic fault detection means shell 16 by screw together with 3-axis acceleration sensor 3,
And be connected by winding displacement 6 with the 4th circuit board 11, the first temperature sensor 7 is arranged on second circuit board by binding post 17
On 9, for measuring environment temperature, technical grade 3G transport modules 15 are plugged on tertiary circuit plate 10；Bearing arrangement acoustic fault
Detection means 1 is connected by Aviation Connector 8 with the Centronics port of T-shaped threeway Aviation Connector 20 to realize the connection with outside, is made
Whole device simple to install and dustproof and waterproof are obtained, bearing arrangement acoustic fault detection means 1 passes through T-shaped threeway Aviation Connector 20
Left side port be connected with second temperature sensor 21, second temperature sensor 21 gos deep into bearing block in the preformed hole of bearing
The temperature of bearing is measured, and data are transferred back in the process chip in bearing arrangement acoustic fault detection means 1, with the first temperature
The data that degree sensor 7 gathers ask poor, effectively reduce the influence that environment temperature is measured bearing temperature, the event of bearing arrangement acoustics
Hinder the right port and bearing arrangement acoustic fault detection means host computer 22 of the detection means 1 by T-shaped threeway Aviation Connector 20
Connection, the power line of power supply is on the one hand accessed into bearing arrangement acoustic fault detection means 1, pass through the electricity of binding post 17 and second
Road plate 9 connects, and reaches the purpose to the signal processing circuit portion point power supply of bearing arrangement acoustic fault detection means 1, the opposing party
Face into bearing arrangement acoustic fault detection means host computer 22, goes through the signal output that signal processing circuit exports to preserve
History data and staff observe running status；Bearing arrangement acoustic fault detection means measuring circuit is in the event of bearing arrangement acoustics
Hinder and three layers of circuit design, including second circuit board 9, the circuit board 11 of tertiary circuit plate 10 and the 4th are used in detection means 1, three layers
Connected respectively by arranging pin 13 and mother row 12 between circuit board, the pre-configured slots of bearing arrangement acoustic fault detection means shell 16,
Second circuit board 9, the circuit board 11 of tertiary circuit plate 10 and the 4th are corresponding preset by arranging pin 13 and after mother row 12 connects as one
Slot is put into bearing arrangement acoustic fault detection means shell 16, is made the compact-sized of whole device and is stablized, hinge 18 connects
Joint bearing system acoustic failure detector shell 16 and lid, bearing arrangement acoustic fault detection means shell 16 connect with lid
Tactile position is equipped with sealing joint strip, preset shell fixing nut 19, is examined lid and whole bearing arrangement acoustic fault with screw
Survey crust of the device 16 to be connected as one, ensure whole device dustproof and waterproof, bearing arrangement acoustic fault detection means shell 16
Using stainless steel, bottom stainless steel plate thickness is 5mm, is easy to fixing and shaking for bearing arrangement acoustic fault detection means 1
The conduction of dynamic signal, in bottom, stainless steel plate stretches out the preset bearing arrangement sound in position of bearing system acoustic failure detector 1
Failure detector fixing hole 14 is learned, for bearing arrangement acoustic fault detection means 1 is firmly secured on bearing block.Institute
The signal processing circuit stated is by data processing module FPGA 29, the electret capacitor acoustic sensor 2, signal amplification circuit
23rd, bandpass filter 24, first temperature sensor 7, temperature/resistance change-over circuit 25, temperature transmission circuit 26, multichannel
A/D change-over circuits 27, the 3-axis acceleration sensor 3, the second temperature sensor 21, the technical grade 3G transport modules
15 and CAN communication module 28 form, wherein electret capacitor acoustic sensor 2, signal amplification circuit 23, bandpass filter
24 and multichannel A/D change-over circuits 27 form acoustic signal detecting system, and electret capacitor acoustic sensor 2 turns acoustic signal
Voltage signal is changed to, because the impedance of electret capacitor acoustic sensor 2 is very big, output voltage is small, therefore is amplified with signal
Signal is adjusted to the suitable voltage range of subsequent conversion circuit by circuit 23, and sampling front signal filters out high frequency by bandpass filter 24
Signal, it is ensured that sampling process is not in frequency alias phenomenon, and easily will bring interference to electret capacitor acoustic sensor 2
Low-frequency noise signal filter out, converting analog signals into data signal by multichannel A/D change-over circuits 27 delivers at data
Module FPGA 29 is managed, by data processing module FPGA 29 by the characteristic frequency in the processing such as spectrum analysis extraction signal；The
One temperature sensor 7, temperature/resistance change-over circuit 25, temperature transmission circuit 26, the temperature of multichannel A/D change-over circuits 27 and second
Spend sensor 21 and form system for detecting temperature, the temperature signal that the first temperature sensor 7 measures is through temperature/resistance change-over circuit 25
Resistance signal output is converted into, is amplified signal by temperature transmission circuit 26, will be simulated and believed by multichannel A/D change-over circuits 27
Number be converted to and to deliver to data processing module FPGA 29 after data signal the first temperature signal, i.e., current environment temperature is calculated
Degree, the bearing temperature signal that second temperature sensor 21 measures also deliver to data processing module FPGA 29 and the second temperature are calculated
Signal is spent, and asks poor with the first temperature signal, effectively prevent outdoor temperature change causes caused by bearing temperature change by mistake
The accidents such as alarm；3-axis acceleration sensor 3 measures vibration signal, establishes and communicates with data processing module FPGA 29, and by counting
According to processing module FPGA 29 by the characteristic frequency in the processing such as spectrum analysis extraction signal；Data processing module FPGA 29 will
Electret capacitor acoustic sensor 2,3-axis acceleration sensor 3, the first temperature sensor 7 and second temperature sensor 21 measure
Data Analysis Services after, transferred data to by CAN communication module 28 in bearing arrangement acoustic fault detection means
In the machine 22 of position, bearing fault signal is transferred in the mobile phone of staff by technical grade 3G transport modules 15.
A kind of the advantages of bearing arrangement acoustic fault detection means of the invention, is：
1st, the acoustic sensor that can survey dither and acceleration transducer are combined as a whole use, expand measurement bearing
The bandwidth range of vibration signal, it is all recognizable to each phase characteristic frequency of bearing fault, failure can be forecast in advance and make
Go out diagnosis, change disorderly closedown is planned shut-down.
2nd, bearing temperature and environment temperature can be measured respectively, and bearing temperature and environment temperature are asked poor, reduce the external world
Influence of the temperature change to temperature alarm system, improve the fault-tolerant ability of warning function.
3rd, device has real-time analyzing and processing data and a radio warning function in itself, and with reliability it is high, it is compact-sized,
The advantages that easy for installation.
Brief description of the drawings
Fig. 1 bearing arrangement acoustic fault structure of the detecting device schematic diagrames
1. the 3-axis acceleration of 2. electret capacitor acoustic sensor of bearing arrangement acoustic fault detection means 3. senses
The second circuit board of 4. first circuit board of device, 5. AB glue, 6. 7. first temperature sensor of winding displacement, 8. Aviation Connector 9.
10. the row of the 4th circuit board of tertiary circuit plate 11. 12. mother's bearing arrangement acoustic fault detection means of 13. row's pin 14.
The binding post 18. of 15. technical grade 3G transport modules of fixing hole, 16. bearing arrangement acoustic fault detection means shell 17.
19. shell fixing nut of hinge, the 20. T-shaped bearing arrangement acoustics of 21. second temperature sensor of threeway Aviation Connector 22.
Failure detector host computer
Fig. 2 bearing arrangement acoustic fault detection means signal processing circuit schematic diagrams
23. 25. temperature of bandpass filter of signal amplification circuit 24./temperature of resistance change-over circuit 26. becomes power transmission
The data processing module FPGA of 27. 28. CAN communication module of multichannel A/D change-over circuits of road 29.
Fig. 3 bearing arrangement acoustic fault detection means scheme of installations
30. the bearing block of bearing block 31. and the bearing block temperature of bearing arrangement acoustic fault detection means fixed screw 32.
Spend sensor preformed hole.
Embodiment
Embodiment 1：
1, accompanying drawing 2 and accompanying drawing 3 are further illustrated using a kind of bearing arrangement acoustic fault inspection of the present invention below in conjunction with the accompanying drawings
Survey the work of application and apparatus of the present invention of the device in bearing arrangement sound and vibration signal fault analysis, on-line checking and Realtime Alerts
Make principle and installation method.
It is according to accompanying drawing 1 that electret capacitor acoustic sensor 2,3-axis acceleration sensor 3, first circuit board 4, first is warm
Sensor 7, second temperature sensor 21, second circuit board 9, tertiary circuit plate 10, the 4th circuit board 11 and technical grade 3G is spent to pass
Defeated module 15 forms integrated bearing system acoustic failure detector, by second circuit board 9, the electricity of tertiary circuit plate 10 and the 4th
Road plate 11 by arranging mother 12 and row's line of pin 13 and fixation, forms the less circuit board of area occupied, loading bearing system respectively
The signal processing circuit of acoustic fault detection means, the TEMP 7 of electret capacitor acoustic sensor 2 and first is respectively by connecing
Line terminals 17 are connected on circuit board, play line and fixed effect, and the chip of 3-axis acceleration sensor 3 is welded to the first electricity
On the plate of road, by the 3-axis acceleration sensor 3 larger AB glue 5 of one layer of rigidity and bearing arrangement acoustic fault detection means shell
16 cling, and in favor of the conduction of vibration signal, then with screw are fixed on first circuit board 4 together with 3-axis acceleration sensor 3
On bearing arrangement acoustic fault detection means shell 16, it is connected by winding displacement 6 with the 4th circuit board 11, bearing arrangement acoustic fault
Detection means 1 passes through Aviation Connector 8 and T with second temperature sensor 21 and bearing arrangement acoustic fault detection means host computer 22
Type threeway Aviation Connector 20 connects, can be with dustproof and waterproof, and facilitates the dismounting of device.
According to accompanying drawing 2 by data processing module FPGA 29, electret capacitor acoustic sensor 2, signal amplification circuit 23,
Bandpass filter 24, the first temperature sensor 7, temperature/resistance change-over circuit 25, temperature transmission circuit 26, multichannel A/D conversions
Circuit 27,3-axis acceleration sensor 3, second temperature sensor 21, technical grade 3G transport modules 15 and CAN communication module
The signal processing circuit portions point of 28 composition bearing arrangement acoustic fault detection means, wherein electret capacitor acoustic sensor 2 with
Signal amplification circuit 23 is connected so that signal is adjusted into suitable voltage range, and frequency is caused when filtering out sampling by bandpass filter 24
The high-frequency signal of rate aliasing, and filter out the low-frequency noise signal that interference is easily brought to electret capacitor acoustic sensor 2, with more
Passage A/D change-over circuits 27 are sent into processing data in data processing module FPGA 29 after carrying out analog-to-digital conversion, extract signal characteristic
Frequency；First temperature sensor 7 is connected so that temperature signal is converted into resistance signal with temperature/resistance change-over circuit 25, and led to
Excess temperature transmission circuit 26 amplifies signal, is delivered to after multichannel A/D change-over circuits 27 in data processing module FPGA 29,
The bearing temperature signal that second temperature sensor 21 measures is delivered in data processing module FPGA 29 to be asked with the first temperature signal
Difference, effectively prevent outdoor temperature change causes bearing temperature to change the influence to temperature measurement system；3-axis acceleration senses
Device 3 is connected with data processing module FPGA 29, extracts the characteristic frequency of low-frequency range vibration signal；Data processing module FPGA 29
It is connected with CAN communication module 28, by the data transfer of analyzing and processing to bearing arrangement acoustic fault detection means host computer
In 22；Technical grade 3G transport modules 15 are connected with data processing module FPGA 29, and bearing fault signal is transferred into staff
Mobile phone in.
When bearing system acoustic failure detector 1 being installed according to accompanying drawing 3, the bearing block and bearing on bearing block 30 are backed out
System acoustic failure detector fixed screw 31, pass through the bearing arrangement acoustics in bearing arrangement acoustic fault detection means 1
Failure detector fixing hole 14, with bearing block and bearing arrangement acoustic fault detection means fixed screw 31 by bearing arrangement sound
Failure detector 1 is tightened with bearing block 30 to be connected as one, and is played a part of fixing device and is conducted beneficial to vibration signal,
Second temperature sensor 21 is inserted in bearing block temperature sensor preformed hole 32, bearing temperature is measured, by T-shaped threeway Aviation Connector
20 Centronics port is connected with Aviation Connector 8, left side port is connected with the output end of second temperature sensor 21, the right port with
Bearing arrangement acoustic fault detection means host computer 22 connects.
Claims (1)
1. a kind of bearing arrangement acoustic fault detection means, it is characterised in that be combined into acoustic sensor and acceleration transducer
One is used, and the sound and vibration signal of low frequency is detected with acceleration transducer, to the sound and vibration signal of high frequency and intermediate frequency electret electricity
Hold acoustic sensor detection, with reference to bearing temperature real-time processing data, identify bearing fault, and will be former with 3G wireless transport modules
Barrier signal is timely transmitted to staff, and a whole set of bearing arrangement acoustic fault detection means (1) is by measurement apparatus and signal transacting
Circuit two parts form, and described measuring device part includes electret capacitor acoustic sensor (2), 3-axis acceleration sensor
(3), the first temperature sensor (7), first circuit board (4), second circuit board (9), tertiary circuit plate (10), the 4th circuit board
(11), technical grade 3G transport modules (15), bearing arrangement acoustic fault detection means shell (16), T-shaped threeway Aviation Connector
(20) measured with second temperature sensor (21) composition, wherein electret capacitor acoustic sensor (2) using the method for contact
The sound and vibration signal of bearing, sensor probe is fixed on bearing arrangement acoustic fault detection means shell with sheet metal and screw
(16) on, 3-axis acceleration sensor (3) is welded on first circuit board (4), and 3-axis acceleration sensor (3) is firm with one layer
The larger AB glue (5) of property clings with bearing arrangement acoustic fault detection means shell (16), and with screw by first circuit board (4)
Fixed on bearing arrangement acoustic fault detection means shell (16), it is connected by winding displacement (6) with the 4th circuit board (11), first
Temperature sensor (7) is arranged on second circuit board (9) by binding post (17) is used for measuring environment temperature, technical grade 3G
Transport module (15) is plugged on tertiary circuit plate (10), and bearing arrangement acoustic fault detection means (1) passes through Aviation Connector
(8) it is connected with the Centronics port of T-shaped threeway Aviation Connector (20) to realize and external connection so that whole device simple to install
And dustproof and waterproof, bearing arrangement acoustic fault detection means (1) by the left side port of T-shaped threeway Aviation Connector (20) with
Second temperature sensor (21) connects, and second temperature sensor (21) gos deep into bearing block and bearing is surveyed in the preformed hole of bearing
Temperature, data are transferred back in the process chip in bearing arrangement acoustic fault detection means (1), with the first temperature sensor
(7) data of collection ask poor, effectively reduce the influence that environment temperature is measured bearing temperature, the detection of bearing arrangement acoustic fault
The right port and bearing arrangement acoustic fault detection means host computer (22) of the device (1) by T-shaped threeway Aviation Connector (20)
Connection, the power line of power supply is on the one hand accessed into bearing arrangement acoustic fault detection means (1), pass through binding post (17) and the
Two circuit boards (9) connect, and reach the mesh to the signal processing circuit portion point power supply of bearing arrangement acoustic fault detection means (1)
, on the other hand by the signal output of signal processing circuit output to bearing arrangement acoustic fault detection means host computer (22)
In, running status is observed with staff to save historical data, bearing arrangement acoustic fault detection means measuring circuit exists
Three layers of circuit design, including second circuit board (9), tertiary circuit plate are used in bearing arrangement acoustic fault detection means (1)
(10) and the 4th circuit board (11), connected respectively by arranging pin (13) and row female (12) between three layer circuit boards, bearing arrangement sound
Learn failure detector shell (16) pre-configured slots, second circuit board (9), tertiary circuit plate (10) and the 4th circuit board (11)
By arranging pin (13) and after row female (12) connects as one, corresponding pre-configured slots are put into outside bearing arrangement acoustic fault detection means
In shell (16), hinge (18) connection bearing system acoustic failure detector shell (16) and lid, bearing arrangement acoustic fault
The position of detection means shell (16) and cap contacts is equipped with sealing joint strip, preset shell fixing nut (19), will be covered with screw
Sub and whole bearing arrangement acoustic fault detection means shell (16) is connected as one, and guarantee whole device is dust-proof, waterproof, axle
Hold system acoustic failure detector shell (16) and use stainless steel, bottom stainless steel plate thickness is 5mm, is easy to bearing system
The fixation of acoustic fault detection means of uniting (1) and the conduction of vibration signal, the preset bearing in position that stainless steel plate stretches out in bottom
System acoustic failure detector fixing hole (14), for bearing arrangement acoustic fault detection means (1) is firmly secured at
On bearing block；Described signal processing circuit is by data processing module FPGA (29), the electret capacitor acoustic sensor
(2), signal amplification circuit (23), bandpass filter (24), first temperature sensor (7), temperature/resistance change-over circuit
(25), temperature transmission circuit (26), multichannel A/D change-over circuits (27), the 3-axis acceleration sensor (3), described second
Temperature sensor (21), the technical grade 3G transport modules (15) and CAN communication module (28) composition, wherein by electret
Electric capacity acoustic sensor (2) is connected with signal amplification circuit (23) signal being adjusted to suitable voltage range, passes through bandpass filtering
Device (24) filters out the high-frequency signal that frequency alias is caused when causing sampling, and carrying out modulus with multichannel A/D change-over circuits (27) turns
Processing data in data processing module FPGA (29) is sent into after changing, extracts signal characteristic frequency, the first temperature sensor (7) and temperature
Temperature signal is converted to resistance signal by the connection of degree/resistance change-over circuit (25), and by temperature transmission circuit (26) by signal
Amplification, delivered to after carrying out analog-to-digital conversion by multichannel A/D change-over circuits (27) in data processing module FPGA (29), second temperature
The bearing temperature signal that sensor (21) measures is delivered in data processing module FPGA (29) and asks poor with the first temperature signal, effectively
Avoiding outdoor temperature change causes bearing temperature to change influence to temperature measurement system, 3-axis acceleration sensor (3) with
Data processing module FPGA (29) connections, extract low-frequency range vibration signal characteristic frequency, data processing module FPGA (29) with
CAN communication module (28) connects, by the data transfer of analyzing and processing to bearing arrangement acoustic fault detection means host computer
(22) in, technical grade 3G transport modules (15) are connected with data processing module FPGA (29), and bearing fault signal is transferred into work
Make in the mobile phone of personnel；When bearing system acoustic failure detector (1) is installed, pass through bearing arrangement acoustic fault detection means
(1) the bearing arrangement acoustic fault detection means fixing hole (14) on, with bearing block and bearing arrangement acoustic fault detection means
Bearing arrangement acoustic fault detection means (1) is tightened and connected as one by fixed screw (31) with bearing block (30), second temperature
In sensor (21) insertion bearing block temperature sensor preformed hole (32), bearing temperature is measured, by T-shaped threeway Aviation Connector (20)
Centronics port be connected with Aviation Connector (8), left side port is connected with the output end of second temperature sensor (21), the right port
It is connected with bearing arrangement acoustic fault detection means host computer (22).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510450084.3A CN105136278B (en) | 2015-07-28 | 2015-07-28 | A kind of bearing arrangement acoustic fault detection means |
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| CN201510450084.3A CN105136278B (en) | 2015-07-28 | 2015-07-28 | A kind of bearing arrangement acoustic fault detection means |
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| CN105136278B true CN105136278B (en) | 2018-04-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105372080B (en) * | 2015-12-22 | 2018-04-24 | 成都市新筑路桥机械股份有限公司 | A kind of tramcar and its embedded tracks Coupled Dynamics test device and method |
| CN106644049B (en) * | 2016-09-29 | 2018-09-04 | 维沃移动通信有限公司 | A kind of measuring device and measuring method of capacitance sound |
| CN110793618B (en) * | 2019-10-28 | 2021-10-26 | 浙江优特轴承有限公司 | Method for detecting three-axis vibration of main shaft bearing by using high-frequency single-axis acceleration gauge |
| CN113340599A (en) * | 2021-06-03 | 2021-09-03 | 大连交通大学 | Bearing system acoustic fault detection device with strong anti-interference capability |
| CN113588269A (en) * | 2021-09-06 | 2021-11-02 | 四川安沃德轨道装备科技有限公司 | Bearing service state monitoring method and system |
| CN114152326A (en) * | 2021-11-25 | 2022-03-08 | 国网重庆市电力公司电力科学研究院 | Vibration measurement method for switch cabinet of power distribution room and surface-mounted digital sensor |
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| CN101696894A (en) * | 2009-10-16 | 2010-04-21 | 北京工业大学 | Data acquisition device for extracting multiple signals of low-speed heavy loading equipment |
| JP4966114B2 (en) * | 2007-06-28 | 2012-07-04 | 株式会社東芝 | Vibration measurement system |
| CN104303036A (en) * | 2012-04-24 | 2015-01-21 | Skf公司 | Method and arrangement of measuring a mechanical bearing oscillation |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4966114B2 (en) * | 2007-06-28 | 2012-07-04 | 株式会社東芝 | Vibration measurement system |
| CN101696894A (en) * | 2009-10-16 | 2010-04-21 | 北京工业大学 | Data acquisition device for extracting multiple signals of low-speed heavy loading equipment |
| CN104303036A (en) * | 2012-04-24 | 2015-01-21 | Skf公司 | Method and arrangement of measuring a mechanical bearing oscillation |
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