CN110530658A - A kind of high-speed railway vehicle vibration detecting system and its detection method - Google Patents
A kind of high-speed railway vehicle vibration detecting system and its detection method Download PDFInfo
- Publication number
- CN110530658A CN110530658A CN201910928306.6A CN201910928306A CN110530658A CN 110530658 A CN110530658 A CN 110530658A CN 201910928306 A CN201910928306 A CN 201910928306A CN 110530658 A CN110530658 A CN 110530658A
- Authority
- CN
- China
- Prior art keywords
- processing unit
- vibration
- transmitting device
- signal
- data
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
Abstract
The invention discloses a kind of high-speed railway vehicle vibration detecting systems, including several vibrating sensors, processing unit, transmitting device and display device, the vibrating sensor is mounted on rolling stock, the vibration signal of vehicle is detected, and be converted to analog signals, the processing unit receives the signal of vibrating sensor, and carry out processing analysis, last result is shown, the transmitting device is normally received the signal of vibrating sensor, then it transfers to processing unit, and after processing unit is handled signal, display device is transferred to by transmitting device, structure of the invention is scientific and reasonable, it is safe and convenient to use, the vibration signal of vehicle is converted to analog quantity by vibrating sensor, then processing unit is transferred to by transmitting device, processing unit carries out after being disposed Data, are then passed through transmitting device again and are transferred to display device, normally detected by analysis.
Description
Technical field
The present invention relates to railway art, specially a kind of high-speed railway vehicle vibration detecting system and its detection side
Method.
Background technique
High-speed rail has different regulations in country variant, different times and different scientific research spheres of learning.China national railway
Office by Chinese high-speed rail be defined as design start 250 kilometers of speed per hour or more, initial stage run Speed 200 km/h more than passenger train it is special
Line railway, and promulgated corresponding " Design of High-speed Railway specification " file, when Chinese high-speed rail is defined as by the China national Committee of Development and Reform
The new line or Existing Railway Line of 250 kilometers of speed and the above standard, and promulgated corresponding Mid-term and Long-term Plan of the Railway Network file, it will
The track circuit of part Speed 200 km/h is included in China Railway High-speed net scope；
But extraneous interference is received for detecting often data at present, and mistake of statistics is caused, it in this way can not for statistics
Reach vehicle problem or orbit problem, and followed by the speed of service, start vibration since speed does not reach specified speed
Degree, mid-term since speed reaches specified, but vehicle operation whether no problem, in the operation in later period, speed is certain, in track
Uncertain problem in the judgement of problem, is three different detection directions here, and the prior art does not also have what is referred to this to ask
Topic.
Summary of the invention
The present invention provides a kind of high-speed railway vehicle vibration detecting system and its detection method, can effectively solve above-mentioned back
It proposes to receive extraneous interference for detecting often data at present in scape technology, causes mistake of statistics, it in this way can not for statistics
Reach vehicle problem or orbit problem, and followed by the speed of service, start vibration since speed does not reach specified speed
Degree, mid-term since speed reaches specified, but vehicle operation whether no problem, in the operation in later period, speed is certain, in track
Uncertain problem in the judgement of problem, is three different detection directions here, and the prior art does not also have what is referred to this to ask
Topic.
To achieve the above object, the invention provides the following technical scheme: a kind of high-speed railway vehicle vibration detecting system, packet
Include several vibrating sensors, processing unit, transmitting device and display device；
The vibrating sensor is mounted on rolling stock, and the vibration signal of vehicle is detected, and is converted to
Analog signals；
The processing unit receives the signal of vibrating sensor, and carries out processing analysis, by last result
It is shown；
The transmitting device is normally received the signal of vibrating sensor, is then transferred to processing unit, and
After processing unit is handled signal, display device is transferred to by transmitting device.
According to the above technical scheme, the vibrating sensor is installed on vehicle interior, and periphery carries out etc. inside the vehicle
Distance installation.
According to the above technical scheme, the processing unit includes processing unit and predicting unit；
The information that vibrating sensor transmits is collected by the processing unit, and data are analyzed, to data
Handled, compared with existing standard, when there are too great deviations, can for vibration generate position and direction into
Row detection, after the completion of test, the route data of vehicle driving is carried out plan view and shown by processing unit, in second test, into
The comparison of row data.
According to the above technical scheme, the predicting unit converts the calculated digital quantity signal of processing unit, and
It is predicted in conjunction with the data measured, data vibration before is subjected to parameter comparison, calculates vibration number in error range
Value, when there is actual value and too great deviations occurs in parameter value, the processing unit is transmitted by transmitting device.
According to the above technical scheme, the transmitting device is that data line is transmitted, and the data line is three core wires, and interior
Side is cased with gauze screen；
The transmitting device includes screen unit, converting unit and record unit；
The screen unit is shielded on the outside of converting unit, and transmitting device is grounded；
The converting unit converts the signal of vibrating sensor, by analog signals first by the mould of vibrating sensor
Analog quantity signal is converted to digital quantity signal, is sent next to processing unit；
The information that the record unit handles processing unit well is recorded, and is stored into and is recorded memory block in unit, institute
Stating memory block is two, and is backed up to it, and the record unit can connect wifi, carries out cloud backup.
According to the above technical scheme, the display device is touch screen and buzzer；
The touch screen is connected with each other by RS485 data line and processing unit, is equipped with and is handled in the touch screen
The program of unit identical frequency, convenient for showing data in processing unit；
Processing unit occur vibrating sensor vibration data it is excessive when, show on the touchscreen, and in buzzing
It alarms in device, buzzer warning contact needs touch screen to be released.
According to the above technical scheme, it is that normally, deviation is greater than 5% that the deviation, which is within 5%, is carried out less than 10%
Data recordation, and alarmed by touch screen, and buzzing is automatically terminated after 3S, touch screen and bee are carried out after for 10%
Ring the same alarm of device, and touch screen is needed to carry out releasing buzzing alarm.
A kind of high-speed railway vehicle method for detecting vibration, includes the following steps:
S1, vibrating sensor is installed in the vehicle portion first, then by processing unit, transmitting device and display device with
Vibrating sensor is attached, and is tested；
It after the completion of S2, test, is run to vehicle, and vibration is detected；
S3, one-time detection is recorded as vibration in 1 minute after operation, is recorded as sequentially for vibration in the later period 1 minute secondary
Operation remaining time is recorded as detecting three times by detection；
S4, one-time detection and secondary detection are compared, and table is made.
According to the above technical scheme, the processing unit bottom end is equipped with damping base.
According to the above technical scheme, the display device has dual touch screen.
Compared with prior art, beneficial effects of the present invention: structure of the invention is scientific and reasonable, safe and convenient to use:
1, the vibration signal of vehicle is converted to analog quantity by vibrating sensor, is then transferred to processing dress by transmitting device
It sets, processing unit is analyzed after being disposed, and data are then passed through to transmitting device again and are transferred to display device, is carried out normal
Detection.
2, by the dual touch screen in display device, it is convenient for normal data record, and data is reported respectively
It is alert, occur error it is excessive when, alarm, reduce the pressure of staff, to ensure that vibration data just
Often monitoring.
3, while the signal transmitted being needed normally to be transmitted by transmitting device, external interference is shielded
It covers, reduces the influence of its signal interference bring, and in use, data are recorded, and be double memory area, be convenient for
Normal backup.
4, by detecting three times, three periods of vehicle are detected, consequently facilitating under different situations, vibration
The fluctuation of data reduces its influence of the vibration for passenger under bring error and different speed per hours due to extraneous influence.
5, possible for the processing unit data influence of vibration can be reduced by damping base, and by table into
Its data recordation of row, convenient for the arrangement and data to arrange in later period, and is prejudged by processing unit, improves vibration environment
Anticipation property.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
In the accompanying drawings:
Fig. 1 is system structure diagram of the invention；
Fig. 2 is method step flow diagram of the invention.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1: as shown in Figure 1, the present invention provides technical solution, a kind of high-speed railway vehicle vibration detecting system, packet
Include several vibrating sensors, processing unit, transmitting device and display device；
Vibrating sensor is mounted on rolling stock, and the vibration signal of vehicle is detected, and is converted to simulation
Measure signal；
Processing unit receives the signal of vibrating sensor, and carries out processing analysis, and last result is carried out
Display；
Transmitting device is normally received the signal of vibrating sensor, is then transferred to processing unit, and is being located
After reason device is handled signal, display device is transferred to by transmitting device.
According to the above technical scheme, vibrating sensor is installed on vehicle interior, and periphery progress is equidistant inside the vehicle
Installation.
According to the above technical scheme, processing unit includes processing unit and predicting unit；
The information that vibrating sensor transmits is collected by processing unit, and data are analyzed, and is carried out to data
Processing, compares with existing standard, and when there are too great deviations, the position and direction that can be generated for vibration are examined
It surveys, after the completion of test, the route data of vehicle driving is carried out plan view and shown by processing unit, in second test, is counted
According to comparison.
According to the above technical scheme, predicting unit converts the calculated digital quantity signal of processing unit, and combines
The data measured are predicted, data vibration before is carried out parameter comparison, calculates vibrating numerical, In in error range
When too great deviations occur in appearance actual value and parameter value, processing unit is transmitted by transmitting device.
According to the above technical scheme, transmitting device is that data line is transmitted, and data line is three core wires, and inside is cased with screen
Cover net；
Transmitting device includes screen unit, converting unit and record unit；
Screen unit is shielded on the outside of converting unit, and transmitting device is grounded；
Converting unit converts the signal of vibrating sensor, by analog signals first by the analog quantity of vibrating sensor
Signal is converted to digital quantity signal, is sent next to processing unit；
It records the information that unit handles processing unit well to record, is stored into and records memory block in unit, memory block
It is two, and it is backed up, recording unit can connect wifi, carry out cloud backup.
According to the above technical scheme, display device is touch screen and buzzer；
Touch screen is connected with each other by RS485 data line and processing unit, is equipped in touch screen identical as processing unit
The program of frequency, convenient for showing data in processing unit；
Processing unit occur vibrating sensor vibration data it is excessive when, show on the touchscreen, and in buzzing
It alarms in device, buzzer warning contact needs touch screen to be released.
According to the above technical scheme, it is that normally, deviation is greater than 5% that deviation, which is within 5%, and data are carried out less than 10%
It records, and is alarmed by touch screen, and automatically terminate buzzing after 3S, touch screen and buzzer are carried out after for 10%
Same alarm, and touch screen is needed to carry out releasing buzzing alarm.
The vibration signal of vehicle is converted to analog quantity by vibrating sensor, is then transferred to processing dress by transmitting device
It sets, processing unit is analyzed after being disposed, and data are then passed through to transmitting device again and are transferred to display device, is carried out normal
Detection normal data record is convenient for, and alarmed respectively for data by the dual touch screen in display device,
Occur error it is excessive when, alarm, reduce the pressure of staff, to ensure that the normal prison of vibration data
It surveys, while the signal transmitted being needed normally to be transmitted by transmitting device, external interference is shielded, it is reduced
Signal interference bring influences, and in use, data is recorded, and be double memory area, has been convenient for normal
Backup.
Embodiment 2: as shown in Fig. 2, a kind of high-speed railway vehicle method for detecting vibration, includes the following steps:
S1, vibrating sensor is installed in the vehicle portion first, then by processing unit, transmitting device and display device with
Vibrating sensor is attached, and is tested；
It after the completion of S2, test, is run to vehicle, and vibration is detected；
S3, one-time detection is recorded as vibration in 1 minute after operation, is recorded as sequentially for vibration in the later period 1 minute secondary
Operation remaining time is recorded as detecting three times by detection；
S4, one-time detection and secondary detection are compared, and table is made.
According to the above technical scheme, processing unit bottom end is equipped with damping base.
According to the above technical scheme, display device has dual touch screen.
By detecting three times, three periods of vehicle are detected, consequently facilitating under different situations, vibration number
According to fluctuation, reduce its influence of the vibration for passenger under bring error and different speed per hours due to extraneous influence, and pass through
Damping base can reduce vibration data influence possible for processing unit, and carry out its data recordation by table,
It convenient for the arrangement and data to arrange in later period, and is prejudged by processing unit, improves the anticipation of vibration environment.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely preferred embodiment of the invention, to the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, for those skilled in the art, still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of high-speed railway vehicle vibration detecting system, it is characterised in that: including several vibrating sensors, processing unit,
Transmitting device and display device；
The vibrating sensor is mounted on rolling stock, and the vibration signal of vehicle is detected, and is converted to simulation
Measure signal；
The processing unit receives the signal of vibrating sensor, and carries out processing analysis, and last result is carried out
Display；
The transmitting device is normally received the signal of vibrating sensor, is then transferred to processing unit, and is being located
After reason device is handled signal, display device is transferred to by transmitting device.
2. a kind of high-speed railway vehicle vibration detecting system according to claim 1, which is characterized in that the vibrating sensing
Device is installed on vehicle interior, and periphery carries out equidistant installation inside the vehicle.
3. a kind of high-speed railway vehicle vibration detecting system according to claim 1, which is characterized in that the processing unit
Including processing unit and predicting unit；
The information that vibrating sensor transmits is collected by the processing unit, and data are analyzed, and is carried out to data
Processing, compares with existing standard, and when there are too great deviations, the position and direction that can be generated for vibration are examined
It surveys, after the completion of test, the route data of vehicle driving is carried out plan view and shown by processing unit, in second test, is counted
According to comparison.
4. a kind of high-speed railway vehicle vibration detecting system according to claim 3, which is characterized in that the predicting unit
The calculated digital quantity signal of processing unit is converted, and the data measured is combined to be predicted, data before are shaken
It is dynamic to carry out parameter comparison, vibrating numerical is calculated in error range, too great deviations occurs with parameter value there is actual value
When, the processing unit is transmitted by transmitting device.
5. a kind of high-speed railway vehicle vibration detecting system according to claim 1, which is characterized in that the transmitting device
It is transmitted for data line, the data line is three core wires, and inside is cased with gauze screen；
The transmitting device includes screen unit, converting unit and record unit；
The screen unit is shielded on the outside of converting unit, and transmitting device is grounded；
The converting unit converts the signal of vibrating sensor, by analog signals first by the analog quantity of vibrating sensor
Signal is converted to digital quantity signal, is sent next to processing unit；
The information that the record unit handles processing unit well is recorded, and is stored into and is recorded memory block in unit, described to deposit
Storage area is two, and is backed up to it, and the record unit can connect wifi, carries out cloud backup.
6. a kind of high-speed railway vehicle vibration detecting system according to claim 3, which is characterized in that the display device
For touch screen and buzzer；
The touch screen is connected with each other by RS485 data line and processing unit, is equipped in the touch screen and processing unit
The program of identical frequency, convenient for showing data in processing unit；
Processing unit occur vibrating sensor vibration data it is excessive when, show on the touchscreen, and in buzzer
It alarms, buzzer warning contact needs touch screen to be released.
7. a kind of high-speed railway vehicle vibration detecting system according to claim 6, which is characterized in that the deviation is
It is that normally, deviation is greater than 5% within 5%, data recordation is carried out less than 10%, and alarm by touch screen, and in 3S
After automatically terminate buzzing, touch screen and the same alarm of buzzer are carried out after for 10%, and touch screen is needed to carry out releasing bee
Ring alarm.
8. a kind of high-speed railway vehicle method for detecting vibration according to claim 1-7, which is characterized in that including
Following steps:
S1, vibrating sensor is installed in the vehicle portion first, then by processing unit, transmitting device and display device and vibration
Sensor is attached, and is tested；
It after the completion of S2, test, is run to vehicle, and vibration is detected；
S3, one-time detection is recorded as vibration in 1 minute after operation, is recorded as secondary detection sequentially for vibration in the later period 1 minute,
Operation remaining time is recorded as detecting three times；
S4, one-time detection and secondary detection are compared, and table is made.
9. a kind of high-speed railway vehicle method for detecting vibration according to claim 8, which is characterized in that the processing unit
Bottom end is equipped with damping base.
10. a kind of high-speed railway vehicle method for detecting vibration according to claim 8, which is characterized in that the display dress
It is equipped with dual touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928306.6A CN110530658A (en) | 2019-09-28 | 2019-09-28 | A kind of high-speed railway vehicle vibration detecting system and its detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928306.6A CN110530658A (en) | 2019-09-28 | 2019-09-28 | A kind of high-speed railway vehicle vibration detecting system and its detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110530658A true CN110530658A (en) | 2019-12-03 |
Family
ID=68670752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910928306.6A Pending CN110530658A (en) | 2019-09-28 | 2019-09-28 | A kind of high-speed railway vehicle vibration detecting system and its detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110530658A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100651187B1 (en) * | 2004-12-24 | 2006-11-30 | 한국철도기술연구원 | Vibration testing system and the method of urban transit vehicles running |
| JP2007218790A (en) * | 2006-02-17 | 2007-08-30 | Railway Technical Res Inst | Rolling-stock-car vibrating system |
| CN101196433A (en) * | 2006-12-31 | 2008-06-11 | 瓦房店轴承集团有限责任公司 | Full-automatic dynamic quality detecting system for goods train bearing |
| CN202038323U (en) * | 2011-05-04 | 2011-11-16 | 广州市地下铁道总公司 | Online operation status detection display system for urban mass transit |
| CN102706572A (en) * | 2012-06-25 | 2012-10-03 | 北京海冬青机电设备有限公司 | Fault diagnosis and rehabilitation center for train wheel sets |
| CN206132406U (en) * | 2016-08-31 | 2017-04-26 | 上海王智测控技术有限公司 | High -speed rail train health condition monitoring devices |
| CN106687353A (en) * | 2014-09-12 | 2017-05-17 | Ntn株式会社 | Railroad car bearing abnormality sensing system |
| CN206427060U (en) * | 2017-01-10 | 2017-08-22 | 上海汇煦交通科技有限公司 | A kind of train vibration abnormality detection system |
| CN107314899A (en) * | 2017-06-07 | 2017-11-03 | 中国铁道科学研究院金属及化学研究所 | Railway locomotive and motor train unit bogie bearing on-line monitoring method |
| CN107943809A (en) * | 2016-10-13 | 2018-04-20 | 阿里巴巴集团控股有限公司 | Data quality monitoring method, device and big data calculating platform |
| CN107941533A (en) * | 2017-12-18 | 2018-04-20 | 中国铁道科学研究院 | EMU unstability detecting system and method based on Industrial Ethernet |
| CN208043413U (en) * | 2018-02-28 | 2018-11-02 | 江苏省徐州技师学院 | The failure detector of rail traffic gear train assembly |
| CN108885157A (en) * | 2016-03-23 | 2018-11-23 | Ntn株式会社 | Railway abnormity diagnostic system and transacter |
-
2019
- 2019-09-28 CN CN201910928306.6A patent/CN110530658A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100651187B1 (en) * | 2004-12-24 | 2006-11-30 | 한국철도기술연구원 | Vibration testing system and the method of urban transit vehicles running |
| JP2007218790A (en) * | 2006-02-17 | 2007-08-30 | Railway Technical Res Inst | Rolling-stock-car vibrating system |
| CN101196433A (en) * | 2006-12-31 | 2008-06-11 | 瓦房店轴承集团有限责任公司 | Full-automatic dynamic quality detecting system for goods train bearing |
| CN202038323U (en) * | 2011-05-04 | 2011-11-16 | 广州市地下铁道总公司 | Online operation status detection display system for urban mass transit |
| CN102706572A (en) * | 2012-06-25 | 2012-10-03 | 北京海冬青机电设备有限公司 | Fault diagnosis and rehabilitation center for train wheel sets |
| CN106687353A (en) * | 2014-09-12 | 2017-05-17 | Ntn株式会社 | Railroad car bearing abnormality sensing system |
| CN108885157A (en) * | 2016-03-23 | 2018-11-23 | Ntn株式会社 | Railway abnormity diagnostic system and transacter |
| CN206132406U (en) * | 2016-08-31 | 2017-04-26 | 上海王智测控技术有限公司 | High -speed rail train health condition monitoring devices |
| CN107943809A (en) * | 2016-10-13 | 2018-04-20 | 阿里巴巴集团控股有限公司 | Data quality monitoring method, device and big data calculating platform |
| CN206427060U (en) * | 2017-01-10 | 2017-08-22 | 上海汇煦交通科技有限公司 | A kind of train vibration abnormality detection system |
| CN107314899A (en) * | 2017-06-07 | 2017-11-03 | 中国铁道科学研究院金属及化学研究所 | Railway locomotive and motor train unit bogie bearing on-line monitoring method |
| CN107941533A (en) * | 2017-12-18 | 2018-04-20 | 中国铁道科学研究院 | EMU unstability detecting system and method based on Industrial Ethernet |
| CN208043413U (en) * | 2018-02-28 | 2018-11-02 | 江苏省徐州技师学院 | The failure detector of rail traffic gear train assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6847906B2 (en) | Inspection system for and method of confirming soundness of transported object | |
| CN101825894B (en) | SF6 high-voltage circuit breaker state intelligent monitoring and health management system | |
| CN107478350B (en) | A kind of Rolling Stock Bearing temperature checking method and digital-to-analog integrated form temperature sensor | |
| CN102706569B (en) | Method and device for detecting snaking motion instability of high speed train bogie | |
| CN104015672B (en) | For the method for registration of vehicle related data, sensor device and vehicle | |
| CN112543725A (en) | Railcar acoustic monitoring system and method of use thereof | |
| CN109396954B (en) | Embedded axis system abnormality intelligent measurement and information push-delivery apparatus | |
| CN103852271A (en) | High-speed train running gear fault diagnosis and remote monitoring system based on Internet of Things | |
| CN103033844A (en) | Single station earthquake P wave detection warning device | |
| CN203055478U (en) | Test system for whole leakage rate of containment vessel | |
| CN109353376A (en) | Rail vehicle monitors system and its monitoring method | |
| CN209942883U (en) | Mine disaster alarm system based on personnel positioning | |
| CN201725208U (en) | Intelligent monitoring and health managing system for sulfur hexafluoride high-voltage circuit breaker state | |
| CN106679999A (en) | Built-in-compartment high-speed train running part online fault detection device | |
| CN105136278B (en) | A kind of bearing arrangement acoustic fault detection means | |
| CN209055845U (en) | A kind of high-speed EMUs driving faults monitoring and fault diagnosis system | |
| CN205486358U (en) | Monitoring system of crowd's density and flow direction | |
| CN110095748A (en) | A kind of detection device and method based on Measuring and calibrating equipment | |
| CN110780347A (en) | Earthquake destructive power prediction device and method based on cyclic neural network | |
| CN110454229A (en) | A kind of mining Microseismic monitoring system | |
| CN102540021A (en) | Method for monitoring GIS (gas insulated switchgear) by aid of high-frequency partial discharge online system | |
| CN110530658A (en) | A kind of high-speed railway vehicle vibration detecting system and its detection method | |
| CN206475888U (en) | Rail clip working state of system real-time monitoring device and system | |
| US6289724B1 (en) | Method and apparatus for examining internal components of a sealed container | |
| CN108152661A (en) | Looped network cable initial failure early warning and alignment system and method based on transient disturbance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191203 |