CN209673338U - Electrification railway contact net bracket loosened screw monitors system - Google Patents
Electrification railway contact net bracket loosened screw monitors system Download PDFInfo
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- CN209673338U CN209673338U CN201822259845.9U CN201822259845U CN209673338U CN 209673338 U CN209673338 U CN 209673338U CN 201822259845 U CN201822259845 U CN 201822259845U CN 209673338 U CN209673338 U CN 209673338U
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- bracket
- microprocessor
- contact net
- shock sensor
- loosened screw
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Abstract
The utility model belongs to electrification railway contact net bracket loosened screw monitoring field, it is that one kind passes through shock sensor, microprocessor and time domain turn the method that frequency domain algorithm obtains electrification railway contact net bracket vibration frequency spectrum and realize electrification railway contact net bracket loosened screw monitoring system, system includes shock sensor, microprocessor, external communication interface, power supply and shell, the vibration of bracket is converted to electric signal by shock sensor and is transferred to microprocessor by system, microprocessor turns the vibration frequency spectrum that frequency domain algorithm calculates bracket by time domain, the vibration frequency spectrum of calculated bracket is compared with the vibration frequency spectrum of the bracket normal condition of preservation, when there is deviation, i.e. it is believed that loosening occurs in bracket screw, to realize the monitoring to electrification railway contact net bracket loosened screw.
Description
Technical field
The present invention relates to a kind of electrification railway contact net bracket loosened screws to monitor system, is suitable for various electrified iron
The monitoring on road, subway, urban light rail contact network cantilever loosened screw.
Background technique
Microprocessor and sensor are the bases for constituting current and various from now on intelligent equipments, instrument, pass through micro process
The combination of device and sensor, may be constructed various intelligentized monitoring equipments, and high-precision simultaneously and dynamically monitors various equipment
Operating status, can not only effectively improve the precision and continuity of various monitorings, and related work can be greatly reduced
Make the labor intensity of personnel；Rail traffic is the most important traffic of China and means of transportation, with microprocessor and sensor
The various systems constituted widely apply the various aspects in rail traffic, such as the micro process that uses of power vehicle of each high-speed rail
Device and sensor have all largely used various micro- places just respectively more than 3000, in the control system of high-speed rail, electrical power trans mission/distribution system
Device and sensor are managed, in the construction of rail traffic, O&M, based on microprocessor and the various instruments of sensor technology, equipment
It will be the basis for promoting Chinese intelligent track-traffic.
To contact the mainstream power supply mode that net mode power supply is current rail, subway, urban light rail, contact net is mainly by connecing
It touches suspension, bracket, positioning device, pillar and foundation to form, wherein bracket is between contact net contact suspension and pillar
Coupling part is positioning important in entire contact net, support system, and bracket system is made from multiple components, between each component
It is screwed more, connects, when the screw in bracket system occurs to loosen, fall off, will cause leading height, pulling out for contact net
Equivalent variation, so that locomotive be caused to be unable to run, what is more, the screw to fall off on high-speed railway is also possible to bullet train
It causes serious injury；Currently about the monitoring of bracket system loosened screw there are mainly two types of mode: 1., personnel's cruising method, i.e.,
The loosening situation of bracket screw is observed in such a way that personnel are using eyes observation, not only inefficiency, but also monitor,
The accuracy of detection is completely dependent on related personnel professional qualities itself, it is difficult to ensure that the quality of monitoring, detection；2., video capture
High-speed camera is mounted on detection vehicle by method, detection vehicle bracket on the way under high-speed camera shooting when orbiting,
It is checked frame by frame by video recording of the people to shooting again after the completion of shooting, video capture method is simply to rise to one of personnel's cruising method
Grade, eliminates personnel and is replaced in the walking step of railway line by inspection car, to the inspection of bracket still by being accomplished manually, efficiency
Although slightly improving, overall efficiency is still very low, and the quality checked not can guarantee equally, especially to that
A bit just take place loosening and appearance without significant change the case where can not detected at all.
According to physics principle it is found that any rigid structure body has a fixed vibration frequency, when this structural body by
Resonance will occur on the fixed vibration frequency of structural body when to external force, and when structural body changes, such as screw
It loosens, the fixed frequency of structural body will also change, and resonance frequency can also change when by external force, electrified
Railway contact line bracket loosened screw monitors system and uses sensor technology, microelectric technique, acquires wrist by shock sensor
The vibration data of arm carries out the resonance frequency that processing obtains bracket to the data that shock sensor acquires using microprocessor, when
When bracket loosened screw, so that it may monitor that the resonance frequency of bracket changes, to realize the prison to bracket loosened screw
It surveys.
Nobody of contact network cantilever loosened screw may be implemented in electrification railway contact net bracket loosened screw monitoring system
Real-time monitoring on duty can effectively improve accuracy, the real-time of the monitoring of bracket loosened screw, greatly improve monitoring effect
Rate effectively avoids the contact net suspension as caused by bracket loosened screw, hits net accident, effectively improves the operation peace of rail traffic
Entirely.
Summary of the invention
The object of the present invention is to provide a kind of electrification railway contact net bracket loosened screws to monitor system.
The technical solution of the present invention is as follows: electrification railway contact net bracket loosened screw monitoring system includes vibration-sensing
Device, microprocessor, external communication interface, power supply and shell；The vibration of bracket is converted to electric signal by shock sensor, by logical
Communication interface is sent to microprocessor, and microprocessor, which is got, turns frequency algorithm meter by time domain after the data of shock sensor transmission
The vibration frequency spectrum of bracket is calculated, and data exchange is carried out by external communication interface and external system, power supply mentions for whole system
For the energy, inside the housing, when use, contacts electric railway for shock sensor, microprocessor, external communication interface installation
Net bracket loosened screw monitoring system is fixed on bracket.
Since electrification railway contact net bracket is a rigid structure body, itself has fixed resonance frequency, when
When loosened screw occurs, it is meant that this rigid structure body is changed, and resonance frequency will also be changed, and is led to
The variation for crossing the vibration frequency of electrification railway contact net bracket loosened screw monitoring system monitoring bracket realizes monitoring bracket
The monitoring of screw；The monitoring system work of electrification railway contact net bracket loosened screw is divided into two stages；1, the fixed frequency of bracket
Rate obtains the stage, and the fixed frequency of bracket is initially entered after electrification railway contact net bracket loosened screw monitoring system is installed
Rate obtains the stage, and the duration that bracket fixed frequency obtains the stage can be preset, and system will by built-in shock sensor
The physical shock of bracket is converted to electric signal and is transferred to microprocessor, and microprocessor turns frequency algorithm by time domain and calculates wrist
The vibration frequency frequency spectrum of arm, and with last time obtain bracket vibration frequency spectrum compared with pair, by repeatedly obtaining, occur every time in frequency spectrum
Frequency be bracket fixed frequency, the bracket fixed frequency that will acquire saves；2, bracket loosened screw monitors stage, electricity
Gasification railway contact line bracket loosened screw monitoring system is converted to the physical shock of bracket by built-in shock sensor
Electric signal is simultaneously transferred to microprocessor, and microprocessor turns the vibration frequency frequency spectrum that frequency algorithm calculates bracket, root by time domain
It searches according to the bracket fixed frequency and the positive negative value of error of bracket fixed frequency that have saved and to match from the frequency spectrum newly got
Frequency values then illustrate that bracket working state of system is normal if it exists, and otherwise illustrating bracket, there are loosened screw situations；Electrified iron
Road contact network cantilever loosened screw monitors system can be with the communication of external communication module realization and external system.
Detailed description of the invention
Fig. 1 system module figure.
Fig. 2 fixed frequency obtains flow chart.
Fig. 3 loosened screw monitors flow chart.
In figure, 1 shock sensor, 2 microprocessors, 3 external communication interfaces, 4 power supplys, 5 shells, 21 acquisition bracket shakes
Dynamic, 22 obtain sensing data, and 23 bracket vibration datas, 24, which calculate bracket, shakes frequency spectrum, and 25 brackets shake frequency spectrum data,
26 determine that bracket shakes fixed frequency, 27 bracket fixed frequencies, and 31 acquisition brackets shake, 32 acquisition sensing datas, 33
Bracket vibration data, 34, which calculate bracket, shakes frequency spectrum, and 35 brackets shake frequency spectrum data, and 36 frequencies compare, and 37 by external logical
Communication interface exports warning message.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
As shown in Figure 1, electrification railway contact net bracket loosened screw monitoring system includes shock sensor 1, micro process
Device 2, external communication interface 3, power supply 4, shell 5；Shock sensor 1 is connect with microprocessor 2 by communication interface, vibration-sensing
Device 1 is used to the physical shock of bracket being converted to electric signal, and transfers data to microprocessor 2, micro- place by communication interface
The data received from shock sensor 1 are turned the vibration frequency spectrum that frequency domain algorithm calculates bracket by time domain by reason device 2, and outside is logical
Data exchange of the communication interface 3 for realizing electrification railway contact net bracket loosened screw monitoring system and external system, power supply 4
The energy, shock sensor 1, microprocessor 2, external communication are provided for shock sensor 1, microprocessor 2, external communication interface 3
Interface 3, power supply 4 are mounted on inside shell 5, and shell 5 provides mounting hole, are used for electrification railway contact net bracket loosened screw
Monitoring system is fixed on contact network cantilever.
As shown in Figure 1 and Figure 2, electrification railway contact net bracket loosened screw monitoring system determines the fixed frequency of bracket
Workflow is as follows: after electrification railway contact net bracket loosened screw monitoring system is mounted on bracket, electric railway
The shock sensor 1 that contact network cantilever loosened screw monitors system acquires bracket vibration 21, and the vibration of bracket is converted to electricity
Signal, microprocessor 2 obtains sensing data 22 later, and saves as bracket vibration data 23, when then microprocessor 2 passes through
Domain turns frequency domain algorithm and calculates the vibration frequency spectrum 24 of bracket and frequency spectrum data is saved as bracket vibration frequency spectrum data 25, by multiple
After the calculating of the frequency spectrum data of calculating, the fixed frequency 26 that bracket vibrates is determined from the bracket of preservation vibration frequency spectrum data, and
Save bracket fixed frequency 27.
As shown in Figure 1, Figure 3, electrification railway contact net bracket loosened screw monitors system loosened screw monitoring stream
Journey is as follows: the shock sensor 1 that electrification railway contact net bracket loosened screw monitors system acquires bracket vibration 31, and by wrist
The vibration of arm is converted to electric signal, and microprocessor 2 obtains sensing data 32 later, saves as bracket vibration data 33, micro- place
Reason device 2 turns the vibration frequency spectrum 34 of frequency domain algorithm calculating bracket and frequency spectrum data is saved as bracket to shake frequency spectrum data by time domain
35, bracket vibration frequency spectrum data 35 and preservation bracket fixed frequency 27 are then subjected to frequency and compare 36, if comparison result one
It causes then to continue to acquire the circulation that bracket vibration 31 is compared to frequency, warning message is otherwise exported by external communication interface
37。
Above-mentioned specific embodiment is the preferred embodiment of the present invention, is not intended to restrict the invention, all based on contact
Net bracket shakes the scheme of spectrum monitoring bracket loosened screw all within protection scope of the present invention.
Claims (1)
1. electrification railway contact net bracket loosened screw monitors system, it is characterised in that including shock sensor (1), micro process
Device (2), external communication interface (3), power supply (4), shell (5)；Shock sensor (1) and microprocessor (2) pass through communication interface
Connection, shock sensor (1) is used to the physical shock of bracket being converted to electric signal, and is transferred data to by communication interface
The data received from shock sensor (1) are turned frequency domain algorithm by time domain and calculated by microprocessor (2), microprocessor (2)
The vibration frequency spectrum of bracket, external communication interface (3) for realizing electrification railway contact net bracket loosened screw monitoring system with
The data exchange of external system, power supply (4) is shock sensor (1), microprocessor (2), external communication interface (3) provide energy
Source, shock sensor (1), microprocessor (2), external communication interface (3), power supply (4) are mounted on shell (5) inside, shell (5)
Mounting hole is provided, for electrification railway contact net bracket loosened screw monitoring system to be fixed on contact network cantilever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259845.9U CN209673338U (en) | 2018-12-29 | 2018-12-29 | Electrification railway contact net bracket loosened screw monitors system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259845.9U CN209673338U (en) | 2018-12-29 | 2018-12-29 | Electrification railway contact net bracket loosened screw monitors system |
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| Publication Number | Publication Date |
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| CN209673338U true CN209673338U (en) | 2019-11-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612711A (en) * | 2018-12-29 | 2019-04-12 | 北京天高科科技有限公司 | Electrification railway contact net bracket loosened screw monitors system |
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2018
- 2018-12-29 CN CN201822259845.9U patent/CN209673338U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612711A (en) * | 2018-12-29 | 2019-04-12 | 北京天高科科技有限公司 | Electrification railway contact net bracket loosened screw monitors system |
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