EP0879421A2 - Procede et dispositif de determination d'un trajet de cable dans un systeme de guidage de cables d'une installation technique, et detecteur utilise a cet effet - Google Patents

Procede et dispositif de determination d'un trajet de cable dans un systeme de guidage de cables d'une installation technique, et detecteur utilise a cet effet

Info

Publication number
EP0879421A2
EP0879421A2 EP97915262A EP97915262A EP0879421A2 EP 0879421 A2 EP0879421 A2 EP 0879421A2 EP 97915262 A EP97915262 A EP 97915262A EP 97915262 A EP97915262 A EP 97915262A EP 0879421 A2 EP0879421 A2 EP 0879421A2
Authority
EP
European Patent Office
Prior art keywords
cable
test signal
detector
signal
route
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.)
Withdrawn
Application number
EP97915262A
Other languages
German (de)
English (en)
Inventor
Rudolf Stein
Peter Waber
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.)
Areva GmbH
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0879421A2 publication Critical patent/EP0879421A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
    • G01V3/06—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current using AC
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors
    • G01R31/60—Identification of wires in a multicore cable

Definitions

  • the invention relates to a method for determining a cable route in a cable routing system of a technical system. It further relates to a device that works according to this method and a detector used in the process.
  • the invention is therefore based on the object of specifying a method for determining a cable route in a cable routing system of a technical system, with which the course of a cable, i.e. whose cable path can be determined. Furthermore, a device which is particularly suitable for carrying out the method and a detector used therein are to be specified, with which the cable path can be determined reliably and effectively.
  • the first-mentioned object is achieved according to the invention by a method in which a test signal conducted through the cable is identified by means of a number of detectors arranged along the cable routing system.
  • the invention is based on the consideration that detection of the test signal, even in the case of a complex cable routing system or cable route network, only has to take place where there is more than one possibility for the course of the cable path, ie at branching points of cable guides or cable routes. Since it is not necessary to detect the area of a cable route between two branches, the use of individual stationary detectors is sufficient to uniquely determine a cable route.
  • a current signal is expediently used as the test signal in order to avoid coupling by interference systems, for example by switching power supplies and / or by transformers.
  • a carrier frequency the so-called feed frequency
  • This carrier frequency is therefore below the usual working frequency band of 20 to 70 kHz of the coupling-in interference systems
  • An identifier assigned to the respective cable is advantageously impressed on the test signal by means of modulation.
  • Frequency or pulse code modulation has proven to be particularly expedient.
  • the modulated test signal is inductively decoupled from the cable to be determined and is coupled into the or each detector.
  • the information associated with each cable and contained in the modulated test signal of the cable to be determined is expediently identified and stored in each detector and linked with its own detector data.
  • the modulated test signal is preferably conducted via the cable shield.
  • the test signal is advantageously fed into the shielding in the case of low-voltage cables, e.g. for process control cables.
  • the modulated test signal can also be routed via individual cable cores, e.g. with activated power cables.
  • the object is achieved according to the invention by a number of detectors arranged along the cable routing system and intended to identify a test signal conducted through the cable, the data of which can be evaluated by means of a central evaluation device.
  • the cable routing system for tion of a plurality of cables expediently a number of cable routes.
  • the central evaluation device serves to determine the cable path on the basis of the preferably modulated test signal.
  • a cable identifier modulated onto the test signal can be linked to detector data in the detector that is passed through.
  • the associated route of the cable i.e. the cable route, determined automatically and unambiguously.
  • the central evaluation device is connected online and / or offline to the detector.
  • a signal generator is provided for generating the test signal.
  • the signal generator expediently comprises a modulator, in particular a frequency or a pulse code modulator.
  • the modulator is advantageously connected to an amplitude limiter.
  • This amplitude limiter is expediently a voltage limiter. This limits the voltage to a range below the operating signal voltage, in particular in a voltage range of 0..10 V.
  • the task is solved by a detector with a demodulator connected on the input side with a filter and on the output side with an evaluation unit. gate, the detector being connected to a Rogowski coil enclosing the cable route for coupling out the test signal
  • test signal can be decoupled, for example, by means of a coil or by means of a plug-in converter.
  • the result of the variants is a signal voltage which contains all the information associated with the test signal and the cable identifier modulated onto the test signal.
  • the filter is preferably a band filter. Then the modulation frequency - and thus the information contained in the test signal - is separated from the carrier frequency of the test signal by means of the demodulator. The information, that is to say in particular the cable identifier, is then linked in the evaluation unit to data specific to each detector.
  • the results of these links are stored in a memory unit connected to the evaluation unit.
  • the stored results that is to say in particular the cable identifiers and the detector data, are then expediently passed online to the central evaluation device via the communication module of the evaluation unit.
  • data is transferred by means of transportable storage media, in particular by means of disks.
  • the detector can also be used to locate a cable defect along the cable route. This is done in particular by evaluating the detector data. In the event of an earth fault, the cable identification of the defective cable is only identified by those detectors that are between the Signal generator and the cable defect are arranged. The cable defect has thus occurred between the last addressed detector and the next unresponsive detector.
  • each cable route within a complex cable routing system can be determined automatically.
  • Each individual cable can be identified within a short time, even with a large number of cables.
  • cable defects can be located in a simple manner.
  • Figure 1 shows schematically a cable routing plan (logical cable route network) with several cable routes and a device for determining a cable route, and
  • FIG. 2 shows a detail II from FIG. 1 on a larger scale with a detector of the device according to FIG. 1.
  • FIG. 1 schematically shows a cable routing plan or a logical cable route network 2 of a cable routing system 3 with several cable routes 4.
  • Detectors 6 and 6 ′ of the device for determining the cable route are arranged along the cable routes 4.
  • the detectors 6, 6 1 routes depending on the cable network of paths 2, ie corresponding to the course of the cable ⁇ 4, positioned or disposed.
  • the device further comprises a signal generator 7 and a central evaluation device 8.
  • the signal generator 7 comprises a current source 10, a modulator 12 and an amplitude limiter 14.
  • a test signal PS is fed into the cable 16 by means of the signal generator 7.
  • the current source 10 of the signal generator 7 generates a current signal with a carrier frequency of e.g. 5 kHz.
  • the test signal PS is first fed to the modulator 12 to impress cable-specific data.
  • An identifier specific to this cable 16 is modulated onto the test signal PS in the modulator 12.
  • the now modulated test signal PS m is fed to the amplitude limiter 14.
  • the amplitude limiter 14 checks the potential difference occurring at the output of the signal generator 7 between the signal generator 7 and the earth potential. In the case of potential differences of, for example, greater than 2.5 V, the voltage amplitude of the modulated test signal PS- is limited to 2.5 V.
  • the modulated test signal PS m is then fed into the cable 16, for example in the case of process control cables into the (not shown) cable shielding and with activated power cables m a (not shown) cable core.
  • the modulated test signal PS m is identified only at the detectors 6 'arranged along the cable path to be determined. In contrast, the detectors 6, which are not arranged along the cable path to be determined, do not locate the modulated test signal PS m .
  • the modulated test signal PS m is registered in the detectors 6 '.
  • FIG. 2 shows one of the detectors 6 '.
  • the detector 6 ' comprises a bandpass filter 20, a demodulator 22 and an evaluation unit 24.
  • the evaluation unit 24 comprises a computer unit 26, a storage unit 28 and a communication module 30.
  • the detector 6' is connected to a Rogowski coil 32, that surrounds the cable route 4 that guides the cable 16 to be determined in front of and / or behind a route junction.
  • the modulated test signal PS "fed into the cable 16 is decoupled by means of the coil 32, whereby all the information contained in the modulated test signal PS n signal PS ' TM is fed to the bandpass filter 20. In the band filter 20 occurring interference frequencies are suppressed.
  • the filtered signal PS ' m is then fed to the demodulator 22.
  • the modulation frequency is separated from the carrier frequency in the demodulator 22.
  • the m is the modulation frequency enthal ⁇ tene information I m, that is, the cable identifier is, on closing fed to the evaluation 24th
  • the cable identifier is then included in the computer unit 26 for the
  • Detector 6 'linked specific data. The results of this linkage are then stored in the storage unit 28.
  • the communication module 30 takes the results, ie the cable identifier and the detector data, from the storage unit 28 as requested by the central evaluation device 8. The results are then sent to the central evaluation device 8 by means of the communication module 30.
  • the disks are read out in the central evaluation device 8.
  • the path of the cable 16 is then automatically and unambiguously determined on the basis of the cable identifier and detector data and the cable route network 2 stored in the central evaluation device 8. Due to the stationary arrangement of the detectors 6 and 6 ', each cable route within the cable route network 2 can be identified quickly and automatically.
  • the central evaluation device 8 ensures the identification of individual cable routes within a short time even with a large number of cables. Furthermore, cable defects, for example an earth fault or a break in the cable 16, can be located in a simple manner.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

Lors de la planification, de la construction, ou encore, de l'exploitation d'une installation technique, il est nécessaire d'établir le parcours exact suivi par un câble posé (16), à savoir, ce qui est appelé le trajet de câble. Conformément à l'invention, afin de pouvoir déterminer très facilement et rapidement le trajet d'un câble ou d'une pluralité de câbles (16), un signal de contrôle (PS, PSm) guidé, et de préférence modulé par le câble ou chaque câble (16), est identifié au moyen d'une pluralité de détecteurs (6, 6') agencés le long du système de guidage de câbles (3).
EP97915262A 1996-02-07 1997-01-22 Procede et dispositif de determination d'un trajet de cable dans un systeme de guidage de cables d'une installation technique, et detecteur utilise a cet effet Withdrawn EP0879421A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19604449 1996-02-07
DE19604449 1996-02-07
PCT/DE1997/000103 WO1997029381A2 (fr) 1996-02-07 1997-01-22 Procede et dispositif de determination d'un trajet de cable dans un systeme de guidage de cables d'une installation technique, et detecteur utilise a cet effet

Publications (1)

Publication Number Publication Date
EP0879421A2 true EP0879421A2 (fr) 1998-11-25

Family

ID=7784765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97915262A Withdrawn EP0879421A2 (fr) 1996-02-07 1997-01-22 Procede et dispositif de determination d'un trajet de cable dans un systeme de guidage de cables d'une installation technique, et detecteur utilise a cet effet

Country Status (2)

Country Link
EP (1) EP0879421A2 (fr)
WO (1) WO1997029381A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933333C1 (de) * 1999-07-16 2001-02-15 Hagenuk Kmt Kabelmestechnik Gm Verfahren und Vorrichtung zur Ortung einer metallischen Leitung
DE10224447C1 (de) * 2002-05-28 2003-07-17 Satelliten Und Kabelfernsehanl Vorrichtung zur Zuordnung von Koaxialkabeln
US7242178B2 (en) 2003-09-30 2007-07-10 Fluke Corporation Digital cable toning apparatus and method
CN112817050B (zh) * 2021-01-13 2021-12-07 陕西奇力达电子科技有限公司 一种变电站电缆路径探测装置及方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769440A (en) * 1972-09-27 1973-10-30 D Goodman Current monitoring system for electric arc furnace conductors
AT357634B (de) * 1976-12-14 1980-07-25 Oesterr Studien Atomenergie Vorrichtung zur identifizierung von elektrischen leitern
DE3708968C2 (de) * 1987-03-19 1996-05-09 Hdw Elektronik Gmbh Vorrichtung zur Ermittlung des Trassenverlaufes von Kabeln
US4937519A (en) * 1988-08-16 1990-06-26 Jupiter Toy Company Apparatus and method for identifying conductors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9729381A2 *

Also Published As

Publication number Publication date
WO1997029381A2 (fr) 1997-08-14
WO1997029381A3 (fr) 1997-10-30

Similar Documents

Publication Publication Date Title
EP0084098B1 (fr) Récepteur pour signaux à fréquences auditives
DE69019865T2 (de) Verfahren und Vorrichtung zum Identifizieren eines optischen Übertragungsmediums.
EP2403745B1 (fr) Dispositifs permettant de détecter si un tronçon de voie est libre ou occupé et procédés pour faire fonctionner de tels dispositifs
DE69322137T2 (de) Funktionsüberwachung und Fehlerlokalisierung für optische Anlage, System und Netzwerk
EP0959569A1 (fr) Méthode et appareille pour le couplage de signaux dans un càble haute ou moyenne tension
EP3786652B1 (fr) Procédé et système de localisation d'un court-circuit entre un conducteur et un blindage électroconducteur entourant ledit conducteur
DE69318769T2 (de) Automatische on-line-Überwachung und Optimierung von Vermittlungsknoten eines optischen Netzes
DE3115200A1 (de) Verfahren zur messung von impulslaufzeiten, fehlerorten und daempfung auf kabeln und lichtwellenleitern
DE69823609T2 (de) Überwachung der optischen Signalleistung mit einem Signaturbitmuster in WDM Systemen
EP0879421A2 (fr) Procede et dispositif de determination d'un trajet de cable dans un systeme de guidage de cables d'une installation technique, et detecteur utilise a cet effet
DE19909244C2 (de) Verfahren zum Übertragen von Daten über einen elektrischen Antriebsstrom für Fahrzeuge führenden Fahrstromleiter
DE19709840C2 (de) Einrichtung für die Achszählung zum Unterscheiden von Radbeeinflussungen und Nicht-Radbeeinflussungen
DE69328294T2 (de) Optisches ubertragungsnetzwerk
DE69929107T2 (de) Verfahren zum Lokalisieren eines Unterseekabels und Energieversorgungsschaltkreis für dieses Kabel
EP0256483B1 (fr) Système pour guider et informer le trafic
DE4405809C2 (de) Verfahren und Einrichtung zum Identifizieren einer Wechselspannung in einem Stromversorgungsnetz mit mehreren Wechselspannungen
DE69815421T2 (de) Installation zur Aufspürung und Ortung von Flüssigkeitsleckagen
EP0961125B1 (fr) Dispositif d'identification de l'affectation de phases de câbles à moyenne tension
WO1999060417A1 (fr) Procede permettant de verifier des cables electriques aeriens et dispositif de mesure et utilisation de ce dernier
DE102018128973B3 (de) Simulationsvorrichtung
DE3228526C2 (fr)
DE69219694T2 (de) Gerät zur Messung der vektoriellen Charakteristika eines frequenzverschobenen, amplitudenmodulierten elektrischen Signals
EP4211480B1 (fr) Surveillance du fonctionnement d'un ensemble de bobines électriques
AT504920B1 (de) Erdschlussortung durch fremdstrom
DE19826230C2 (de) Verfahren und Einrichtung zur Zustandsbewertung eines Bahngleises

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

17P Request for examination filed

Effective date: 19980720

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE CH DE ES FI FR GB LI SE

17Q First examination report despatched

Effective date: 19990205

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

Owner name: FRAMATOME ANP GMBH

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20030214