EP1902923A2 - System zur Echtzeitüberwachung der Belegung von Eisenbahnstrecken - Google Patents

System zur Echtzeitüberwachung der Belegung von Eisenbahnstrecken Download PDF

Info

Publication number
EP1902923A2
EP1902923A2 EP07113574A EP07113574A EP1902923A2 EP 1902923 A2 EP1902923 A2 EP 1902923A2 EP 07113574 A EP07113574 A EP 07113574A EP 07113574 A EP07113574 A EP 07113574A EP 1902923 A2 EP1902923 A2 EP 1902923A2
Authority
EP
European Patent Office
Prior art keywords
sensors
optical
output
signal
ssens
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.)
Granted
Application number
EP07113574A
Other languages
English (en)
French (fr)
Other versions
EP1902923A3 (de
EP1902923B1 (de
Inventor
Aldo Antonelli
Giovanni Bocchetti
Giovanni Breglio
Andrea Cusano
Antonello Cutolo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Optosmart Srl
Hitachi Rail STS SpA
Original Assignee
OPTOSMART Srl
Ansaldo Segnalamento Ferroviario SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by OPTOSMART Srl, Ansaldo Segnalamento Ferroviario SpA filed Critical OPTOSMART Srl
Priority to PL07113574T priority Critical patent/PL1902923T3/pl
Publication of EP1902923A2 publication Critical patent/EP1902923A2/de
Publication of EP1902923A3 publication Critical patent/EP1902923A3/de
Application granted granted Critical
Publication of EP1902923B1 publication Critical patent/EP1902923B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/16—Devices for counting axles; Devices for counting vehicles
    • B61L1/163—Detection devices
    • B61L1/166—Optical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/16—Devices for counting axles; Devices for counting vehicles
    • B61L1/169—Diagnosis

Definitions

  • the present invention relates to a system for real-time monitoring of the state of occupation of railway lines.
  • One of the main methods for real-time monitoring of the state of occupation of railway lines is based upon the axle-count automatic-block system.
  • Said system is designed to detect the position of the railway vehicles moving with respect to sections of line, referred to as "block sections", identified on the rails of railway lines or stretches of line.
  • the automatic-block system produces information indispensable for operation of the signalling network that regulates the distance between trains and activation of switches, contributing to guaranteeing safe circulation.
  • control of occupation of a block section is carried out by means of purposely provided equipment, actuated by the movement of the railway vehicles, which count the axles of a vehicle entering the block section and leaving the block section.
  • Axle-count equipment is provided with sensors set at the ends of the block section and designed to measure the number of the axles entering and leaving said section.
  • the axle-count equipment compares the number of axles measured at entry to the section with the one measured at exit in order to obtain the information on the occupation of the block section considered.
  • the block section is free if the axles counted at entry to the section are equal in number to the axles counted at exit from the section.
  • the senor comprises a solenoid, mounted on the inside of the rail and designed to generate a magnetic field, and a magnetic-field meter.
  • the passage of each single axle is detected by analysing the perturbation of the magnetic field caused by the passage of the metal axle.
  • Another type of sensor comprises an electrical contact, set in the proximity of the internal edge of the rail and designed to behave as a switch actuated so that it closes upon passage of the axle of the vehicle.
  • a further type of sensor comprises a lever mechanism coupled to a switch, set on the internal edge of the rail, and actuated by the axle of the vehicle as the vehicle travels.
  • sensors have been devised comprising a fluid chamber set underneath the flange of the rail between two sleepers and having the function of detecting the deformations of the rail upon passage of the axle of the vehicle.
  • Axle-count block systems of a known type are subject to a series of drawbacks, such as wear (as regards the electromechanical systems) and electromagnetic incompatibility (as regards the systems based upon solenoids).
  • axle-count block systems of a known type can make erroneous detections that seriously jeopardize circulation of railway vehicles.
  • axle-count block systems of a known type are overcome by the present invention, in so far as it regards a system for real-time monitoring of the state of occupation of railway lines of the type described in Claim 1.
  • the system forming the subject of the present invention envisages the use of optical-fibre Bragg gratings for dynamic or static detection of the passage or possible stoppage of railway vehicles on a railway line, simultaneously guaranteeing high reliability, low wear of the sensing components, electrical insulation and full electromagnetic compatibility, thus enabling the limitations described above to be overcome.
  • a system 1 for real-time monitoring of the state of occupation of railway lines according to the present invention in which Bragg-grating sensors 4, 5, mounted on a rail 2, are connected to one another and to a querying system 10 by means of an optical fibre 3.
  • the system 1 is designed to detect the static and/or dynamic deformations of the rail 2 caused by the passage of the axles of a railway vehicle (not illustrated).
  • the system 1 uses an optical fibre 3, comprising at least two Bragg-grating sensors 4, 5 and, in general, N Bragg-grating sensors, set at a distance from one another in positions corresponding to end portions of one or more stretches of line, each stretch constituting a block section 6 to be monitored.
  • An optical-fibre Bragg-grating sensor is obtained by means of a spatial modulation of the index of refraction of the "core" of an optical fibre in order to bestow upon the latter the characteristics of an optical reflector that is selective for a particularly narrow range of wavelengths (tenths of a nanometre).
  • optical-fibre Bragg-grating sensors are readily available on the market and are used, for example, in the telecommunications sector on optical fibres as filters for selecting a channel in a WDM ("Wavelength Division Multiplexing") or DWDM ("Dense Wavelength Division Multiplexing”) coding.
  • WDM Widelength Division Multiplexing
  • DWDM Dense Wavelength Division Multiplexing
  • the optical fibre 3 is positioned along the rail 2 in such a way that each sensor 4, 5 will be stably fixed in contact with the rail 2 (for example, positioned under the head 2a or in contact with the stem 2b of the rail) in the point in which it is desired to make the detection.
  • the installation of the optical fibre 3 and of the sensors 4, 5 can occur by direct bonding of the optical fibre 3 and/or of the sensors 4, 5 on the external wall of the rail 2 or else by setting the optical fibre 3 and/or the sensors 4, 5 inside a metal package (not illustrated) and welding said package to the rail 2.
  • the deformations/vibrations transmitted to the rail by the passage of an axle of a railway vehicle are detected by the sensor 4 or by the reference sensor 5 (according to whether the passage of the axle occurs at entry to or at exit from the block section 6), which modifies its own optical characteristics.
  • a peculiarity of optical-fibre Bragg gratings lies in the fact that local variations, due for example to vibrations, of the physical state of the stretch of optical fibre in which the Bragg grating has been made are the cause of a translation of the central wavelength of the reflection spectrum of the optical signal back-reflected by the Bragg grating with respect to the case of absence of alterations of said stretch of optical fibre.
  • the sensors 4, 5 have wavelengths of maximum reflectivity that are different from one another. In fact, in the case where more than one sensor is used, each sensor must operate at a wavelength of maximum reflectivity that is different from that of all the other sensors.
  • the sensor 4, 5 provides an axle-passage detection point and can be used in both directions of travel, rendering possible not only the control of occupation of the block section 6, but also the direction of movement of the railway vehicles in both directions.
  • Said sensors 4, 5, in fact, detect transit of the axle of a railway vehicle each at a location of their own and are characterized by a reflection wavelength of their own.
  • the sensor 4 can have a wavelength of maximum reflectivity lower than 1550 nm (referred to hereinafter as "low wavelength”), whilst the sensor 5 can have a wavelength of maximum reflectivity higher than 1550 nm (referred to hereinafter as "high wavelength").
  • the optical fibre 3 communicates, through at least one end thereof, with the querying system 10 designed to supply at input to the optical fibre 3 to which it is connected an appropriate light radiation and designed to acquire the radiation of low and high wavelength back-reflected by the sensors 4, 5.
  • the optical fibre 3 and, consequently, the Bragg-grating sensors 4, 5 are mounted along the railway line, whilst the querying system 10 can be mounted in a remote location, for example in the railway station (not illustrated).
  • a single optical fibre 3 comprising Bragg-grating sensors 4, 5 can be used for monitoring several tens of kilometres of railway lines, and a single querying system 10 can query simultaneously a number of optical fibres 3 and corresponding sensors 4, 5.
  • FIG. 1 shows in greater detail the system 10 for querying the sensors 4, 5.
  • the querying system 10 comprises a wide-band optical source 11 (for example, obtained by means of a LED) designed to illuminate the optical fibre 3, which can be, for example, of the type used for phone and/or data communications, and in which the sensors 4, 5 are present, set at an appropriate distance from one another.
  • a wide-band optical source 11 for example, obtained by means of a LED
  • the optical fibre 3 can be, for example, of the type used for phone and/or data communications, and in which the sensors 4, 5 are present, set at an appropriate distance from one another.
  • the signal at output from the optical source 11 is supplied to a first three-way connector 12, having at least three ports, and in particular:
  • the multiplexer 14 has the function of separating the components of light back-reflected by the sensors 4, 5 and routing them each on a different output.
  • the component of light of low wavelength can be routed on a multiplexer output 14a and supplied to a first channel 15, whilst the component of light of high wavelength can be routed on a multiplexer output 14b and supplied to a second channel 15'.
  • the first and second channels 15 and 15' are each made up of an optoelectronic system, the optoelectronic systems being separate from one another but equivalent as regards the operating function performed. Consequently, in the following description, reference will be made just to the first channel 15.
  • the first channel 15 comprises:
  • the second connector 20, the first filter 21, the first detector 22, and the first electrical adapter 25 are cascaded to one another.
  • the first channel 15 further comprises a second optical detector 26, connected at input to a second output of the second connector 20 and at output to a second adapter port 25b of the first electrical adapter 25.
  • the outputs of the second detector 26 and of the first electrical adapter 25 are moreover connected respectively to a first acquisition port 30a and to a second acquisition port 30b of an acquisition system 30.
  • the first filter 21 has a spectral response of the transmissivity/reflectivity coefficient having a linear law as a function of the wavelength, so that variations in the wavelength of the light that illuminates it result in variations in the transmitted/reflected intensity.
  • the signal reflected by the first filter 21 reaches, through the second connector 20, the second detector 26, which converts the variations of amplitude of the light signal that it receives at input from the second connector 20 into a voltage signal Ssens_2(t).
  • the signal transmitted by the first filter 21 reaches the first detector 22 and from this is converted into a voltage signal Ssens_1(t).
  • Both of the voltage signals Ssens_1(t) and Ssens_2(t) are supplied at input to the first electrical adapter 25, respectively on the port 25a and 25b of the first electrical adapter 25, which processes them by means of an algorithm of ratiometric compensation, of a type known in the literature. Processing by means of the ratiometric-compensation algorithm becomes necessary in so far as the amplitude of the signals Ssens_1(t) and Ssens_2(t) can depend, not only upon the variation, due to the physical quantities to be monitored, of the wavelength of the component of light reflected by the sensors 4, 5, but also upon fluctuations of power of the optical source 11 or upon the variation in the losses in any point of the querying system 10 and/or of the optical fibre 3.
  • the ratiometric compensation made by the first electrical adapter 25 by processing Ssens_1(t) and Ssens_2(t), at output on a third adapter port 25c, there is a single signal Ssens_3(t), the amplitude variations of which are due exclusively to the variations in the tensional/vibrational state to which the corresponding sensor 4 is subject during passage of the axles of a railway vehicle in the point in which the sensor 4 is mounted.
  • the variation in amplitude of the signal Ssens_3(t) actually represents the variation in the quantity measured by the single sensor 4.
  • the second channel 15' is made and operates in a way similar to the first channel 15. In the same way as the first channel 15, also the second channel 15' generates, at output from a second electrical adapter 25', a voltage signal Ssens_3' (t), the amplitude variations of which are due exclusively to the passage of the axle of a railway vehicle at the end of the block section 6 where the corresponding sensor 5 is mounted.
  • the voltage signals Ssens_3(t), Ssens_3'(t) are then supplied at input, respectively, to the ports 30b and 30b', of the acquisition system 30, which has the function of acquiring said signals and processing them so as to obtain the information that is to define the number of axles of a railway vehicle that has entered and left the block section 6, at the end of which the sensors 4, 5 are installed.
  • the passage of an axle of the railway vehicle is detected when the signal Ssens_3(t) assumes a pre-set relationship with respect to (for example is higher than) a threshold value Slim.
  • a first counter (not shown) is activated, which detects the passage of the axle in a position corresponding to one between the sensor 4 and the sensor 5, for example the sensor 4. Similar operations can be performed for the sensor 5 by activating a second counter, which detects the passage of an axle on the sensor 5. The contents of said counters can be compared, according to a known technique, in order to detect the state of occupation of the block section 6.
  • testing element 31 performs functions of alarm and control of operation of the querying system 10, of the optical fibre 3 and of the sensors 4, 5 and can be activated, for example, by a remote location at a railway station (not illustrated) for a time interval in which passage of a railway vehicle is not expected.
  • the testing element 31 When the testing element 31 is active, it interacts with the optical source 11 in such a way as to generate a variation in the characteristic of emission of the optical source 11, for example modulating the amplitude of the output optical signal in a known way according to a pre-set law.
  • Any possible difformity of the signals Ssens_2(t), Ssens_2'(t) with respect to the expected response enables generation of an appropriate request for troubleshooting and/or an alarm for improper operation.
  • the analysis of the signals Ssens_2(t) and Ssens_2' (t) and sending of the request for troubleshooting or of alarm for improper operation are carried out by the acquisition system 30.
  • the system described can be integrated with systems that use spectral properties, tuning qualities and time profiles of the radiation emitted that are different from the ones explicitly considered and chosen appropriately according to the specific application.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Optical Communication System (AREA)
EP07113574A 2006-09-20 2007-07-31 System zur Echtzeitüberwachung der Belegung von Eisenbahnstrecken Active EP1902923B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07113574T PL1902923T3 (pl) 2006-09-20 2007-07-31 System do monitorowania w czasie rzeczywistym stanu zajętości linii kolejowych

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000004A ITBN20060004A1 (it) 2006-09-20 2006-09-20 Sistema di trasmissione in fibra ottica per il monitoraggio dei parametri ed il miglioramento della sicurezza di una linea ferroviaria

Publications (3)

Publication Number Publication Date
EP1902923A2 true EP1902923A2 (de) 2008-03-26
EP1902923A3 EP1902923A3 (de) 2008-06-11
EP1902923B1 EP1902923B1 (de) 2010-04-14

Family

ID=38823652

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07113574A Active EP1902923B1 (de) 2006-09-20 2007-07-31 System zur Echtzeitüberwachung der Belegung von Eisenbahnstrecken

Country Status (5)

Country Link
EP (1) EP1902923B1 (de)
AT (1) ATE464217T1 (de)
DE (1) DE602007005889D1 (de)
IT (1) ITBN20060004A1 (de)
PL (1) PL1902923T3 (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2112047A3 (de) * 2008-04-21 2010-01-27 ACE snc Verfahren und Anlage zur Messung und erweiterten Überwachung des Spannungszustands einer Langschiene
CN101863278A (zh) * 2010-06-03 2010-10-20 西南交通大学 基于光栅反射谱展宽的高速铁路计轴装置
KR101049552B1 (ko) * 2009-04-07 2011-07-14 주식회사 혁신전공사 집중형 디지털 통합 폐색시스템
WO2011113931A1 (en) * 2010-03-19 2011-09-22 Mer Mec S.P.A. Method and device for the real time detection of the state of occupation of railroad sections based on fbg sensors
WO2013001268A3 (en) * 2011-06-29 2013-03-07 University Of Strathclyde Optical fibre sensor interrogation system
WO2013114129A1 (en) * 2012-02-01 2013-08-08 Optasense Holdings Limited Detecting train separation
US9561812B2 (en) 2012-02-24 2017-02-07 Optasense Holdings Limited Monitoring transport network infrastructure
CN107128332A (zh) * 2017-07-03 2017-09-05 翟晓晨 铁路轨道光栅芯核碳纤传感器
EP3388812A1 (de) * 2017-04-14 2018-10-17 Palo Alto Research Center, Incorporated Überwachung von transportsystemen
US10272930B2 (en) * 2015-03-20 2019-04-30 Thales Deutschland Gmbh Axle counting method and axle counting device
US10604843B2 (en) 2017-05-10 2020-03-31 Xerox Corporation High registration particles-transferring system
EP3050774B2 (de) † 2009-09-03 2020-11-11 Siemens Mobility Limited Eisenbahnschienensysteme mit akustischer überwachung
CN113879358A (zh) * 2021-10-29 2022-01-04 国能朔黄铁路发展有限责任公司 轨道状态监测设备及方法、控制装置和存储介质
EP3978331A1 (de) * 2020-10-05 2022-04-06 Frauscher Sensor Technology Group GmbH Verfahren zur überwachung eines eisenbahngleises und überwachungseinheit zur überwachung eines eisenbahngleises

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060202860A1 (en) 2005-03-10 2006-09-14 Fibera, Inc. Fiber optic track circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5680489A (en) * 1996-06-28 1997-10-21 The United States Of America As Represented By The Secretary Of The Navy Optical sensor system utilizing bragg grating sensors
ES2401127T3 (es) * 2004-03-29 2013-04-17 The Hong Kong Polytechnic University Sistema y procedimiento para controlar vías ferroviarias

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060202860A1 (en) 2005-03-10 2006-09-14 Fibera, Inc. Fiber optic track circuit

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2112047A3 (de) * 2008-04-21 2010-01-27 ACE snc Verfahren und Anlage zur Messung und erweiterten Überwachung des Spannungszustands einer Langschiene
KR101049552B1 (ko) * 2009-04-07 2011-07-14 주식회사 혁신전공사 집중형 디지털 통합 폐색시스템
EP3050774B2 (de) † 2009-09-03 2020-11-11 Siemens Mobility Limited Eisenbahnschienensysteme mit akustischer überwachung
WO2011113931A1 (en) * 2010-03-19 2011-09-22 Mer Mec S.P.A. Method and device for the real time detection of the state of occupation of railroad sections based on fbg sensors
EP2368782A1 (de) * 2010-03-19 2011-09-28 Mer Mec S.P.A. Verfahren und Vorrichtung zur Echtzeit-Detektion des Belegungsstatus von Bahnstreckenabschnitten auf Grundlage von FBG-Sensoren
CN101863278A (zh) * 2010-06-03 2010-10-20 西南交通大学 基于光栅反射谱展宽的高速铁路计轴装置
WO2013001268A3 (en) * 2011-06-29 2013-03-07 University Of Strathclyde Optical fibre sensor interrogation system
US9310273B2 (en) 2011-06-29 2016-04-12 University Of Strathelyde Optical fibre sensor interrogation system
WO2013114129A1 (en) * 2012-02-01 2013-08-08 Optasense Holdings Limited Detecting train separation
CN104203713A (zh) * 2012-02-01 2014-12-10 光学感应器控股有限公司 检测列车分离
CN104203713B (zh) * 2012-02-01 2016-12-28 光学感应器控股有限公司 检测列车分离
RU2619148C2 (ru) * 2012-02-01 2017-05-12 Оптасенс Холдингз Лимитед Определение саморасцепа железнодорожного состава
US9561812B2 (en) 2012-02-24 2017-02-07 Optasense Holdings Limited Monitoring transport network infrastructure
US10272930B2 (en) * 2015-03-20 2019-04-30 Thales Deutschland Gmbh Axle counting method and axle counting device
EP3388812A1 (de) * 2017-04-14 2018-10-17 Palo Alto Research Center, Incorporated Überwachung von transportsystemen
US10604843B2 (en) 2017-05-10 2020-03-31 Xerox Corporation High registration particles-transferring system
US11732362B2 (en) 2017-05-10 2023-08-22 Xerox Corporation High registration particles-transferring system
CN107128332A (zh) * 2017-07-03 2017-09-05 翟晓晨 铁路轨道光栅芯核碳纤传感器
EP3978331A1 (de) * 2020-10-05 2022-04-06 Frauscher Sensor Technology Group GmbH Verfahren zur überwachung eines eisenbahngleises und überwachungseinheit zur überwachung eines eisenbahngleises
WO2022073842A1 (en) * 2020-10-05 2022-04-14 Frauscher Sensor Technology Group Gmbh Method for monitoring a railway track and monitoring unit for monitoring a railway track
AU2021356025B2 (en) * 2020-10-05 2023-12-21 Frauscher Sensor Technology Group Gmbh Method for monitoring a railway track and monitoring unit for monitoring a railway track
CN113879358A (zh) * 2021-10-29 2022-01-04 国能朔黄铁路发展有限责任公司 轨道状态监测设备及方法、控制装置和存储介质

Also Published As

Publication number Publication date
EP1902923A3 (de) 2008-06-11
DE602007005889D1 (de) 2010-05-27
PL1902923T3 (pl) 2010-10-29
ITBN20060004A1 (it) 2006-12-20
EP1902923B1 (de) 2010-04-14
ATE464217T1 (de) 2010-04-15

Similar Documents

Publication Publication Date Title
EP1902923B1 (de) System zur Echtzeitüberwachung der Belegung von Eisenbahnstrecken
KR102029784B1 (ko) 차축-계산 방법 및 차축-계산 장치(Axle-counting method and axle-counting device)
CA2106635C (en) Railway coded track circuit apparatus and method utilizing fiber optic sensing
AU2018202193B2 (en) Monitoring transportation systems
CN109269624B (zh) 基于波分与时分联合复用的分布式管道监测装置与方法
JP3908703B2 (ja) Ｏｔｄｒを用いた光ネットワーク試験のためのシステム
US10727938B2 (en) Overcoming Rayleigh backscatter in wavelength division multiplexed fiber optic sensor systems and fault detection in optical networks
CN103890557B (zh) 使用otdr测量的pon监管
CN104769860B (zh) 包括传感器的纤维网络
US7630641B1 (en) Optical network monitoring
CN101000267A (zh) 全并行分布式光纤光栅温度传感方法及其系统
CN100434894C (zh) 光传输线路的反射测试方法、光设备以及光发送和接收设备
CN103159103A (zh) 安全装置和电梯装置
CN102976172A (zh) 传感器、安全设备和电梯设备
CN109596251A (zh) 光纤传感道岔转换力检测方法及装置
CN102223176A (zh) 一种基于二维光正交码的无源光网络光层监控方法及装置
WO2013141765A1 (en) A system, a wavelength isolator and methods therein for supervision of a passive optical network
UA46054C2 (uk) Система, спосіб та пристрій для моніторингу оптоволоконного кабелю
CN104627205A (zh) 基于光纤光栅传感器闭环回路的铁路异物侵限监测系统
CN102104421A (zh) 光纤网络中分支光纤故障检测方法、装置以及光纤网络
CN202103671U (zh) 光接入网链路二维光正交码监控系统
CN204368189U (zh) 基于光纤光栅传感器闭环回路的铁路异物侵限监测系统
Popov et al. Distributed fiber-optic sensors for location monitoring of rolling stock
TWI359576B (de)
US5408091A (en) Device for measuring a physical quantity by time-division coding

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20081211

17Q First examination report despatched

Effective date: 20090112

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAC Information related to communication of intention to grant a patent modified

Free format text: ORIGINAL CODE: EPIDOSCIGR1

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: OPTOSMART S.R.L.

Owner name: ANSALDO STS S.P.A.

RIC1 Information provided on ipc code assigned before grant

Ipc: B61L 1/16 20060101AFI20090921BHEP

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602007005889

Country of ref document: DE

Date of ref document: 20100527

Kind code of ref document: P

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20100414

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCHNEIDER FELDMANN AG PATENT- UND MARKENANWAELTE

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20100414

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100725

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100814

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100526

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100816

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100731

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

26N No opposition filed

Effective date: 20110117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110201

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100715

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602007005889

Country of ref document: DE

Effective date: 20110201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CZ

Payment date: 20110624

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20120621

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100731

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101015

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100414

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: RO

Payment date: 20120719

Year of fee payment: 6

Ref country code: SE

Payment date: 20120712

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20120719

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20121024

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100714

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

Ref country code: CZ

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130801

Ref country code: RO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20120622

Year of fee payment: 6

REG Reference to a national code

Ref country code: PL

Ref legal event code: LAPE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230717

Year of fee payment: 17