WO1997029381A2 - Verfahren und vorrichtung zur bestimmung eines kabelweges in einem kabelführungssystem einer technischen anlage sowie dabei eingesetzter detektor - Google Patents
Verfahren und vorrichtung zur bestimmung eines kabelweges in einem kabelführungssystem einer technischen anlage sowie dabei eingesetzter detektor Download PDFInfo
- Publication number
- WO1997029381A2 WO1997029381A2 PCT/DE1997/000103 DE9700103W WO9729381A2 WO 1997029381 A2 WO1997029381 A2 WO 1997029381A2 DE 9700103 W DE9700103 W DE 9700103W WO 9729381 A2 WO9729381 A2 WO 9729381A2
- Authority
- WO
- WIPO (PCT)
- 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.)
- Ceased
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
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97915262A EP0879421A2 (de) | 1996-02-07 | 1997-01-22 | Verfahren und vorrichtung zur bestimmung eines kabelweges in einem kabelführungssystem einer technischen anlage sowie dabei eingesetzter detektor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19604449.9 | 1996-02-07 | ||
| DE19604449 | 1996-02-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1997029381A2 true WO1997029381A2 (de) | 1997-08-14 |
| WO1997029381A3 WO1997029381A3 (de) | 1997-10-30 |
Family
ID=7784765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1997/000103 Ceased WO1997029381A2 (de) | 1996-02-07 | 1997-01-22 | Verfahren und vorrichtung zur bestimmung eines kabelweges in einem kabelführungssystem einer technischen anlage sowie dabei eingesetzter detektor |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0879421A2 (de) |
| WO (1) | WO1997029381A2 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10224447C1 (de) * | 2002-05-28 | 2003-07-17 | Satelliten Und Kabelfernsehanl | Vorrichtung zur Zuordnung von Koaxialkabeln |
| WO2005033721A1 (en) | 2003-09-30 | 2005-04-14 | Fluke Corporation | Digital cable toning apparatus and method |
| EP1070939A3 (de) * | 1999-07-16 | 2005-12-21 | Hagenuk KMT Kabelmesstechnik GmbH | Verfahren und Vorichtung zur Ortung einer metallischen Leitung |
| CN112817050A (zh) * | 2021-01-13 | 2021-05-18 | 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)
| 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 |
-
1997
- 1997-01-22 EP EP97915262A patent/EP0879421A2/de not_active Withdrawn
- 1997-01-22 WO PCT/DE1997/000103 patent/WO1997029381A2/de not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1070939A3 (de) * | 1999-07-16 | 2005-12-21 | Hagenuk KMT Kabelmesstechnik GmbH | Verfahren und Vorichtung zur Ortung einer metallischen Leitung |
| DE10224447C1 (de) * | 2002-05-28 | 2003-07-17 | Satelliten Und Kabelfernsehanl | Vorrichtung zur Zuordnung von Koaxialkabeln |
| WO2005033721A1 (en) | 2003-09-30 | 2005-04-14 | Fluke Corporation | Digital cable toning apparatus and method |
| EP1673638A4 (de) * | 2003-09-30 | 2010-07-21 | Fluke Corp | Digitalkabel-toning-vorrichtung und -verfahren |
| CN112817050A (zh) * | 2021-01-13 | 2021-05-18 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1997029381A3 (de) | 1997-10-30 |
| EP0879421A2 (de) | 1998-11-25 |
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