RU2444449C1 - Method and system of diagnostics and remote monitoring of railway overhead contact system - Google Patents
Method and system of diagnostics and remote monitoring of railway overhead contact system Download PDFInfo
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- RU2444449C1 RU2444449C1 RU2010137656/11A RU2010137656A RU2444449C1 RU 2444449 C1 RU2444449 C1 RU 2444449C1 RU 2010137656/11 A RU2010137656/11 A RU 2010137656/11A RU 2010137656 A RU2010137656 A RU 2010137656A RU 2444449 C1 RU2444449 C1 RU 2444449C1
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Abstract
FIELD: transport.
SUBSTANCE: invention relates to remote measuring systems to be used for monitoring railway transport overhead contact systems. Proposed method comprises acquisition and transmission of data on health of contact system health, as well as its estimation. Transducers incorporated with appropriate units register acoustic and vibration characteristics, magnetic field and contact system element temperature variations to transmit obtained data to data concentrators. Remote diagnostics and monitoring system (RDMS) comprises data acquisition and transmission units located along the overhead contact system and made up of viroacoustics and vibrodiagnostics transducers, magnetic field and temperature transducers, as well as self-contained power supply, microprocessor device and device for radio communication between the unit and RDMS data concentrator.
EFFECT: higher safety of railway traffic.
2 cl, 4 dwg
Description
The invention relates to remote measuring systems and is intended for use in systems of supervisory control and monitoring of the contact network of railway transport.
High-speed train traffic places stringent requirements on objects and devices of railway transport infrastructure, in particular on a contact network, on the mechanical strength, geometric parameters and technical condition of the elements of which the safety and continuity of train traffic depends.
Today's widespread approach to maintenance and repair of the contact network of railway tracks is to identify the state of the elements of the contact network through periodic inspections and direct measurements. Manual measurements and periodic inspections of the contact network are not cost-effective and give insufficiently accurate results.
A known non-contact method for monitoring the technical condition of the contact network, which consists in assessing the wear and sag of the wires according to the results of their video shooting (RF patent No. 2066645, IPC B61K 9/08, 1996 publication). The main disadvantage of this method is the extremely low accuracy and reliability of the estimates due to the low spatial resolution of the camera and the noise of the generated image.
A known method of controlling the degree of wear of the contact wire, which consists in the use of matrix eddy current transducers placed on the collector ski of a laboratory car (RF patent No. 2108936, IPC BK 9/08, 1998 publication). The main disadvantages of this approach are: the inoperability of the method when assessing the wear of a two-wire contact network; significant difficulties in the interpretation and georeferencing of the results of electromagnetic measurements of the wire cross section.
A device is known for measuring and recording wear of a contact wire, comprising brackets mounted on a current collector of a moving tool with a linear illuminator of a contact drive located along the current collector skid and connected to the output of the power source, and assembling the light receivers, as well as an information processing and display unit, the light detectors used in one row parallel to the current collector runner and the linear illuminator television cameras with lenses, light filters and lenses multielement photodetectors with control circuits, and the object of observation of each camera when moving the laboratory car is a luminous strip on the contact wire, while the width of the wear area is determined by the number of camera cells having a higher brightness relative to neighboring elements (RF patent No. 2120866, V60M 1 / 12, B60M 1/13, 1998 publication).
A known method of monitoring the state of the contact wire, which consists in the fact that the contact wire is illuminated by an optical device mounted on the current collector of the vehicle, and the height of the contact wire is recorded, while using the optical device, the deformation dynamics of the contact wire is recorded - its elastic line (sag) when the movement of the vehicle, comparing the actual value of the moment of inertia of the studied section, based on the height of the contact wire, measured using the optical device and the estimated value of the moment of inertia of the same section obtained by measuring the elastic line wires (slack) (Russian patent №2134203, IPC V60M 1/12, publication 1999 YG).
A known method for monitoring the state of the contact wire is carried out by means of a device containing a base fixed to the current collector with an optical system mounted on it, consisting of a sensor including a light source and receiver located on opposite sides of the contact wire, the base being fixed by a lever system with the exception of direct contact with the contact wire, and the optical system installed on it includes a number of sensors placed along the axis of the contact wire, and each sensor is a system of two emitters located on opposite sides of the contact wire and configured to generate light rays of small divergence, and two receivers of light radiation.
A known method for diagnosing local wear of the contact network of the power supply of trains, including shooting the contact network by means of a thermal imaging scanner mounted on the roof of a moving train car, the subsequent formation of the image of the contact network using computer tools and analysis of the heterogeneity of the temperature field of each wire, then select sections characterized by increased temperature of each contact wire in relation to the set temperature limits, and you vlyayut degree of local wear of contact network and define the terrain of the local places, increased wear of the catenary wire to be replaced (RF patent №2264930, IPC V60M 1/12, G01N 3/56, published in 2005).
A known system of monitoring the parameters of the contact network of the railway, which is located on a pantograph equipped with a self-propelled mobile unit of railway transport and contains a height sensor for the suspension of the contact wire, a position sensor for the contact wire in plan, an ambient temperature sensor, a power source, a signal collection and transmission unit, a remote control control device for determining the position of the contact wire in the plan with n sensors of the position of the contact wire located in it (RF patent No. 68977, PC V60M 1/12, published in 2007).
Assessing the state of the contact network using a laboratory car makes it possible to measure the suspension height of the contact wire, its wear, pressing the current collector on the contact wire, and the voltage in the contact network during the passage of the car along the line.
A disadvantage of the known systems for monitoring the state of the contact network with the help of laboratory cars is that these measurements are periodic in nature, while it is not possible to monitor the stress-strain state of the elements of the contact network.
For early detection of changes in the state of the contact network, constant continuous monitoring of its elements is necessary. A modern system of the current content of the contact network requires the use of measuring systems that make it possible to automatically monitor the state of the elements of the contact network without a lot of time and with minimal staff involvement.
The objective of the present invention is to provide a method for the diagnosis and remote monitoring of the contact network of the railway, which allows to continuously detect automatically the early changes in the operational characteristics of the elements of the contact network at an early stage, analyze the obtained measurement results and issue emergency and emergency notification to the operating personnel.
Another objective of the invention is the creation of a diagnostic system and remote monitoring of the contact network of the railway, providing continuous monitoring of the parameters of the elements of the contact network in real time, analysis and identification of the nature of the causes of emergency situations for their timely warning.
The technical result of the invention is to obtain an objective assessment of the state of the contact network in real time and the possibility of taking timely preventive repair measures to replace defective sections of the contact network.
The invention consists in the following.
A method for diagnosing and remotely monitoring a railway contact network includes collecting information about the state of the contact network elements, transmitting the collected information, and then evaluating the technical condition of the contact network elements. The collection and transmission of information about the state of the elements of the contact network is carried out by means of the information collection and transmission units of the diagnostic and remote monitoring system (SDUM), which are stationary located along the contact network along its entire length, while acoustic sensors located in the information collection and transmission units are continuously recorded and vibrational characteristics, characteristics of changes in the magnetic field, temperature of the elements of the contact network, the measured values are transmitted over the radio channel in size aemye at junctions throughout the length of the catenary intermediate data concentrators that provide collection and analysis of information from a further data transmission blocks sensors in a single concentrator information about the state of the contact elements of the railway network.
The system of diagnostics and remote monitoring (SDUM) of the contact network of the railway contains sensors of the parameters of the technical state of the elements of the contact network, which includes consoles located on the anchor supports of the contact network, the bearing cable, strings, contact wire, load-compensating devices of the bearing cable and contact wire. Stationary units for collecting and transmitting information are installed along the entire length of the contact network on the carrier cable and contact wire directly behind the rollers of the blocks of load-compensating devices and / or above the garlands of load-compensating devices placed on the anchor supports of the contact network. Each information collection and transmission unit contains a set of sensors for the technical state of the contact network elements, including vibroacoustics and vibration diagnostics of the contact network elements, a magnetic field sensor and a temperature sensor, as well as an autonomous power source, a microprocessor device for primary analog-to-digital processing of information from block sensors , a radio communication device between the unit and the SDUM intermediate information concentrator located at the nodal station, which is connected by means of water and / or wireless communication with a single hub of information on the state of elements of the contact network of the railway.
Figure 1 shows a structural diagram of a unit for collecting and transmitting information of a diagnostic system and remote monitoring; figure 2 shows the installation location of the blocks for collecting and transmitting information.
The diagnostic and remote monitoring system (SDUM) of the railway contact network contains information collection and transmission units 1 fixed on sections of the support cable 2 and contact wire 3 directly to the rollers of the blocks 4 of the load-compensating devices and above the garlands of goods 5 of the load-compensating devices, which are placed on the anchor supports 6 contact networks located at a distance of 1200-1600 meters from each other along the entire length of the contact network.
To monitor the state of the contact network on one anchor section (between two adjacent anchor supports), it is sufficient to place two stationary units for collecting information.
Each unit for collecting and transmitting information 1 contains a set of 7 sensors, including a vibration acoustics sensor (passive sensor) and a vibration diagnostics sensor (three-axis accelerometer), a magnetic field sensor (movement detection), and a temperature sensor (not shown) integrated on a single chip.
The information collection and transmission unit 1 also contains an autonomous power supply 8, a microprocessor device (MPU) 9, a radio communication device 10 between the unit and the SDUM intermediate information concentrator located at the railway junction station, as well as the interface element 11 of the block data transmission system (SPD) 1 .
The intermediate information hub is connected via wired and / or wireless communication with a single hub of information about the state of the elements of the contact network of the railway.
The proposed method of time-continuous automated monitoring of the state of the elements of the contact network is based on the use of vibration diagnostics, acoustic emission by means of recording equipment (sensors) of the information collection and transmission unit.
In the event of damage to individual elements of the contact network, redistribution of internal forces occurs in them due to a decrease in stiffness, as a result of which the transfer functions and forms and vibrational energies change, as well as the frequencies of natural vibrations and the amplitude vibrations increase. The analysis of these phenomena is carried out by establishing the coercive force and physical characteristics of the resulting vibrations.
The information collection and transmission unit analyzes parameters (instantaneous actual values of the amplitudes of accelerations of forced vibrations, fundamental frequencies of natural vibrations, natural modes, logarithmic decrements of vibrations, voltages, temperatures, frequency spectrum) with a frequency of up to 500 times per second, recording fast-moving processes.
By means of a microprocessor device included in the information collection and transmission unit, control is carried out, primary processing of information from the sensors of the unit.
The interface element of the SPD block provides docking, registration, security in the network of the SPD devices of the SDUM system of the contact network. This is due to the need to fulfill the requirements for a secure connection to the general technological network of data transmission of the railway. Docking is carried out by including the following elements in the data transfer chain:
- dividing switch with software function hardware encryption (based on AIM-slot) and widely known Cisco IOS® software, which provides security when transmitting data over public networks;
- a hardware Firewall based on the Cisco Secure Private Internet Exchange (PIX) Firewall, which allows for the protection of corporate networks. The protection scheme is based on the use of the adaptive security algorithm (ASA). This robust algorithm provides connection-level security by monitoring information about the source and destination addresses, TCP packet numbering sequence (Transmission Control Protocol), port numbers, and additional TCP flags.
The obtained results are transmitted via a radio communication channel to the SDUM intermediate concentrators located 15-20 km away at the junction stations along the entire length of the contact network. SDUM intermediate concentrators provide for the collection and analysis of information received from information collection and transmission units, followed by data transfer to a single information concentrator on the state of elements of the railway contact network.
The state of the contact network is evaluated automatically according to the results of data analysis, which is performed by the software on the SDUM server located in the information and computer center of the road.
Analysis of the state of the elements of the contact network is based on an expert calculation method. This method is based on the fundamental properties of the contact network designs, which are related to the connection of its stiffness parameters with the parameters of natural and forced vibrations. Calculations are performed on a finite element model calibrated using experimentally determined parameters of the transfer function matrix, the spectrum of natural vibrations, and vibration modes using modal analysis. Thus, there are two stages of assessing the state of the elements of the contact network:
Express analysis - performed directly by the information collection and transmission unit. It consists in comparing the established (regulatory documents) boundary parameters of the controlled quantities with the measured ones. Based on the comparison results, a signal is generated in the system.
Mat analysis - a mathematical model is constructed from the values measured and transmitted by the unit, which makes it possible to assess the residual life of the elements of the contact network, to predict the behavior of the CS under adverse external influences.
The proposed method allows you to identify the following: open cable (one or more cores of the cable), open contact wire; the change in the tension of the bearing cable and / or contact wire in case of violation of the normal operation of compensating devices or the fall of foreign objects on the cable and / or contact wire; integrity control of cargo compensation elements; movement of goods under the influence of temperatures; slipping of the contact wire from the clamps; monitoring the breakage of one or more conductors of the carrier wire; the occurrence of resonant oscillations in the elements of the contact network.
The proposed method and diagnostic system allows for safe high-speed movement in actual weather (with strong winds, icing).
Using the proposed diagnostic system and remote monitoring allows you to reduce the cost of operating the contact network of the railway due to the timely detection of emergency and emergency situations and the possibility of taking preventive repair measures.
Claims (2)
1. A method for the diagnosis and remote monitoring of the contact network of the railway, including collecting information about the state of the elements of the contact network, transmitting the collected information and then evaluating the technical condition of the elements of the contact network, characterized in that the collection and transmission of information about the state of the elements of the contact network is carried out by means of collection units and transmitting information from the Diagnostic and Remote Monitoring System (SDUM), which are stationary located along the contact network along its entire length, while At the same time, acoustic and vibrational characteristics, characteristics of changes in the magnetic field, temperature of the contact network elements are continuously recorded in the sensor blocks, the measured values are transmitted via the radio channel to the intermediate information concentrators located at the nodal stations along the entire length of the contact network, which provide the collection and analysis of information from the sensor blocks with the subsequent transfer of data to a single hub of information about the state of the elements of the contact network of the railway.
2. The system of diagnostics and remote monitoring (SDUM) of the contact network of the railway, including consoles located on the anchor supports of the contact network, bearing cable, strings, contact wire, load-compensating devices of the bearing cable and contact wire and containing sensors of the technical state of the contact network elements, characterized the fact that in sections of the supporting cable and contact wire located directly behind the rollers of the blocks of the load-compensating devices and / or above the garlands of cargo monitoring devices that are located on the anchor supports of the contact network, information collection and transmission units are permanently fixed along the entire contact network, each information collection and transmission unit contains a set of sensors for the technical state of the contact network elements, including vibration sensors and vibration diagnostics of the contact network elements , a magnetic field sensor and a temperature sensor, as well as an autonomous power source, a microprocessor device for primary analog-to-digital information processing tion with the sensor unit, the radio unit between the unit and placed on the intermediate junction station information SDUM hub, which is connected via a wired and / or wireless communication with one hub state information elements of the railway catenary.
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| Application Number | Priority Date | Filing Date | Title |
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| RU2010137656/11A RU2444449C1 (en) | 2010-09-07 | 2010-09-07 | Method and system of diagnostics and remote monitoring of railway overhead contact system |
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| RU2010137656/11A RU2444449C1 (en) | 2010-09-07 | 2010-09-07 | Method and system of diagnostics and remote monitoring of railway overhead contact system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268364A (en) * | 2013-01-05 | 2013-08-28 | 中铁四局集团电气化工程有限公司 | Railway contact net support structure customization method |
| RU2538360C2 (en) * | 2012-11-13 | 2015-01-10 | Российская Федерация в лице Министерства промышленности и торговли РФ | Method and apparatus for acoustic emission diagnosis of defects of off-shore sleet-proof structures |
| RU2631891C1 (en) * | 2016-11-08 | 2017-09-28 | Акционерное общество "Институт "Стройпроект" | System of diagnostics and remote control of wire tension force and cables of railway overhead system |
| RU2644055C2 (en) * | 2012-09-18 | 2018-02-07 | Сименс Акциенгезелльшафт | Method of diagnostics of components ways of network of railway lines of railway transport |
| RU187243U1 (en) * | 2018-06-06 | 2019-02-26 | Акционерное общество "Фирма ТВЕМА" | Contact network device |
| RU2681777C1 (en) * | 2018-05-30 | 2019-03-12 | Открытое Акционерное Общество "Российские Железные Дороги" | System for monitoring tensions and displacements of wires of the high speed railway line catenary |
| WO2019125197A1 (en) * | 2017-12-19 | 2019-06-27 | Научно-Технический Центр "Радиотехнических Устройств И Систем" С Ограниченной Ответственностью | Method and system of automatically monitoring a contact conductor of an electric transport system |
| WO2019160434A1 (en) * | 2018-02-16 | 2019-08-22 | Научно-Технический Центр "Радиотехнических, Устройств И Систем" С Ограниченной Ответственностью | Automatic monitoring of the condition of an overhead transmission conductor |
| RU2701887C1 (en) * | 2018-08-10 | 2019-10-02 | Общество с ограниченной ответственностью "ЛокоТех-Сигнал" | System and method for continuous monitoring of state of contact network of rail transport |
| RU195428U1 (en) * | 2019-10-17 | 2020-01-28 | Общество С Ограниченной Ответственностью "Мобильные Системы Диагностики Холдинг" | Manual electronic contact wire wear meter |
| RU195537U1 (en) * | 2019-10-17 | 2020-01-30 | Общество С Ограниченной Ответственностью "Мобильные Системы Диагностики Холдинг" | Manual electronic contact wire wear meter |
| RU2720701C1 (en) * | 2019-09-18 | 2020-05-12 | Александр Леонидович Муха | Method for acoustic recording of current collection faults |
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| RU2187438C2 (en) * | 2000-04-18 | 2002-08-20 | Мрыхин Станислав Дмитриевич | Method of and device for revealing places of damaged insulation in contact system |
| RU68977U1 (en) * | 2007-09-03 | 2007-12-10 | Закрытое акционерное общество Научно-производственный центр информационных и транспортных систем (НПЦ ИНФОТРАНС) | Railway contact network control system |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2644055C2 (en) * | 2012-09-18 | 2018-02-07 | Сименс Акциенгезелльшафт | Method of diagnostics of components ways of network of railway lines of railway transport |
| US10131369B2 (en) | 2012-09-18 | 2018-11-20 | Siemens Aktiengesellschaft | Method for diagnosing railroad components of a railroad network for rail transport |
| RU2538360C2 (en) * | 2012-11-13 | 2015-01-10 | Российская Федерация в лице Министерства промышленности и торговли РФ | Method and apparatus for acoustic emission diagnosis of defects of off-shore sleet-proof structures |
| CN103268364B (en) * | 2013-01-05 | 2017-03-15 | 中铁四局集团电气化工程有限公司 | Railway contact net support structure customization method |
| CN103268364A (en) * | 2013-01-05 | 2013-08-28 | 中铁四局集团电气化工程有限公司 | Railway contact net support structure customization method |
| RU2631891C1 (en) * | 2016-11-08 | 2017-09-28 | Акционерное общество "Институт "Стройпроект" | System of diagnostics and remote control of wire tension force and cables of railway overhead system |
| WO2019125197A1 (en) * | 2017-12-19 | 2019-06-27 | Научно-Технический Центр "Радиотехнических Устройств И Систем" С Ограниченной Ответственностью | Method and system of automatically monitoring a contact conductor of an electric transport system |
| WO2019160434A1 (en) * | 2018-02-16 | 2019-08-22 | Научно-Технический Центр "Радиотехнических, Устройств И Систем" С Ограниченной Ответственностью | Automatic monitoring of the condition of an overhead transmission conductor |
| RU2681777C1 (en) * | 2018-05-30 | 2019-03-12 | Открытое Акционерное Общество "Российские Железные Дороги" | System for monitoring tensions and displacements of wires of the high speed railway line catenary |
| RU187243U1 (en) * | 2018-06-06 | 2019-02-26 | Акционерное общество "Фирма ТВЕМА" | Contact network device |
| RU2701887C1 (en) * | 2018-08-10 | 2019-10-02 | Общество с ограниченной ответственностью "ЛокоТех-Сигнал" | System and method for continuous monitoring of state of contact network of rail transport |
| RU2720701C1 (en) * | 2019-09-18 | 2020-05-12 | Александр Леонидович Муха | Method for acoustic recording of current collection faults |
| RU195428U1 (en) * | 2019-10-17 | 2020-01-28 | Общество С Ограниченной Ответственностью "Мобильные Системы Диагностики Холдинг" | Manual electronic contact wire wear meter |
| RU195537U1 (en) * | 2019-10-17 | 2020-01-30 | Общество С Ограниченной Ответственностью "Мобильные Системы Диагностики Холдинг" | Manual electronic contact wire wear meter |
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