Method and setup for determining the location or course of a cable

Abstract

Method and setup (1) for determining the location of a cable (3), where a cable source signal is picked up on the cable to be located by coil sets (4), each with a first coil (4a,b) and a second coil (4c,d), which are positioned at an angle of 0 - 180° to each other and which are each connected to a device (5) for measuring the signal strengths of the cable signal received by the coils and calculating from this the horizontal and vertical distance of the cable to the measuring device.

Description

Brief description: Method and setup for determining of the location or the course of a cable DESCRIPTION 10 The invention relates to a process and in- direction for determining the location or the course of a cable. The invention comprises a method for determining the 15 location or the course of a cable, comprising the steps of - providing a measuring device that has at least two, comprises coil sets installed at a measuring distance from each other, each spool set comprising a first spool and a second 20 spools, where the first and second spools of each spool set stand at a mutual angle of 0 - 180°, which first and the second coils of the coil sets are connected to a measuring and calculating device, designed for measuring the sig- needle strengths of the received by the individual coils 25 cable signal; - providing a cable source signal on the cable; - placing the measuring device at a location in the proximity to the cable and measuring the signal strengths of the cable signals picked up by the various coils 30 times and calculating the horizontal and vertical from that the distance from the cable to the measuring device. The invention also comprises a measuring device for the measuring posts of the location or the course of a cable that excites a cable source signal, comprising at least two, coil sets installed at a measuring distance from each other, each bobbin set comprising a first bobbin and a second bobbin, where the first and second spool of each spool set under stand at a mutual angle of 0 - 180° and where that first- the t and second coils of the coil sets are connected to a measuring and calculating device, designed for measuring the 10 signal strengths of the signal received by the individual coils cable signal and calculating the horizontal from it the vertical distance from the cable to the measuring device. The invention will now be discussed in more detail on the basis of 15 of the figure description below. Figure 1 schematically shows an example of implementation of a measuring device according to the invention, in- including a cable source signal generator and a cable lying in the ground, the location of which must be determined, including a vector slide gram for the purpose of trigonometric calculations ning of the cable location. 25 Figure 1a schematically shows an example of execution of a measuring device (1) according to the invention, a signal- generator (2) and a cable lying in the ground (3), where- from the position relative to the facility (1) must be the determined. In Figure 1, the signal generator (2) is at one end (3a) of the cable connected to one or possibly more cable conductors or possibly on a conductive cable sheath whereby, after switching on ling of the signal generator (2) a cable source signal on the cable (3) will be placed, so that over the entire length of the ka- bell or at least a large part of it around the cable (3) is excited in the ground. The frequency of the 5 cable signal, for example, lies in the range of 100 - 1000 Hz. It is noted that the cable source signal on the cable by can be done by means of a signal generator, or on- 10 closed by galvanic coupling (as proposed in figure 1a) or by inductive or capacitive coupling are. It is also possible to a signal that is already on the The cable can be used as the source signal. The source signal can be a continuous or non-continuous alternating current, but 15 also a digital signal. The actual measuring device (1) comprises in the figure 1 shown execution example two, at a measuring distance (m) each set of spools (4) includes, each set of spools 20 (4) comprising a first coil (4a or 4b), and a two- the coil (4c or 4d) which - viewed in the vertical plane - stand at a 90° angle to each other, so that- nig that the one coil (4a,b) electromagnetically speaking verti- caal and the other coil (4c,d) is horizontally oriented. 25 An angle other than 90° can also be chosen; the calculation (see below) must then be based on that past. All coils (4a-d) are connected to a measuring and re- 30 characteristic device (5), which is designed for measuring the sig- needle strengths of the individual spools (4a-d) received cable signal. After placing the measuring device (1) at a location in the proximity (within the measuring distance m) of the cable (3) will be the signal strengths (Sa-d) of the by the various coils (4a-d) of the cable (3) picked up cable signals 5 supplied to the measuring and calculating device (5), in which from that signal strengths (Sa-d) by, for example, trigonometric calculation of the horizontal distances (m1 and m2) and vertical distance (the depth, d) from the cable (3) to the measuring point direction is calculated. Figure lb shows a vector diagram to illustrate the trigonometric calculation of the cable location which calculate kene, for example, is as follows: In the shown vector triangle ABD, is a = tan-1 (Sa / Sc) R = tan-1(Sb / Sd), where Sa-Sd are the measured signal strengths of the by the respective coils (4a-d) are received by in- coupling of the electromagnetic radiation emitted by the cable 20 tic field of the cable signal. The depth d of the cable (3), represented by the line segment CD, is equal to (AB * sin (a) * sin (C3)) / sin(a+(3), 25 where the line segment AB represents the measuring distance AB. tan(a) = CD / AC, so AC = CD * tan(a), and tan((3) = CD / CB, so CB = CD * tan(0). 30 With an example of a measurement, carried out in practice with a device according to the invention, the measuring distance m, i.e. the distance between both reel sets 4, 100 cm was and where the following signal strengths are measured ten: Sa = 80 Sb = 34.2 5 Sc = 21.4 Sd = 59.1 a = tan-1(80 / 21.4) = 75° 8 = tan-1(34.2 / 59.1) = 30° The depth d of the cable (3), represented by the line segment CD, is equal to CD = (100*sin(30°)*sin(75°)) / sin(105°) = (100 x 0.5 x 0.966) / 0.966 = 50 cm tan(a) = CD / AC, so AC = CD / tan(a) = 50 / tan(30°) = 86.6 cm tan(P) = CD / CB, so CB = CD / tan((3) = 50 / tan(75°) = 13.4 cm Thus, in the manner described above, using of a device according to the invention the depth and the horizontal distance to the device according to the invention be determined.

Claims

1. Method for determining the location or the routing of a cable (3), comprising the steps of - providing a measuring device (1) that at least (m) spaced apart two, at a measuring distance includes spool sets (4), each spool set including a first- e coil (4a,b) and a second coil (4c,d), where the first and second spool of each spool set under an on- stand at an angle of 0 - 180° and where the first and second coils (4a-d) of the coil sets connected are equipped with a measuring and calculating device (5), for measuring the signal strengths of the by the indi- individual coils receive cable signal; - providing a cable source signal on the cable; - placing the measuring device at a location in the proximity of the cable and measuring the signal- strengths (Sa-d) of the by the different coils intercepted cable signals and calculating from them the horizontal (AC,CB) and vertical distance (CD) of the cable to the measuring device.

2. Measuring device (1) for determining the location respectively the course of a cable (3) that a cable source signal excites, comprising at least two, on a measuring distance (m) between coil sets (4), each coil set comprising a first coil (4a,b) and a second spool (4c,d), where the first and second spool each spool set standing at a mutual angle of 0 30 - 180° and where the first and second coils (4a-d) of the coil sets are connected to a measuring and calculating organ (5), designed for measuring the signal strengths (Sa-d) of the by the individual coils received cable signal and calculating the horizontal (AC,CB) and vertical distance (CD) of the cable to the measuring device. rrrrrr pt7 qt.„,jo\i 0V Z 0j7 PORT CONCERNING RESEARCH INTO THE STATE OF THE ART Patent application 1044964 1 1 classification of the subject : Investigated areas of technology : V3 / 08; G01R33 / 02 G01V PC files: Scope of the investigation: DOC, WPI Full um of the investigated conclusions: Uninvestigated conclusions: October 2024 - Relevant literature 2 Citation of literature with indication, where necessary, of relevance to gory conclusion(s) of text passages or figures of particular importance X US 8515689 B2 (LI KUN) August 20, 2013 1, 2 * figure 7; column 25, line 16 - column 26, line 35 * – – – X US 9151822 B2 (WAITE JAMES W) October 6, 2015 1, 2 * figures 1, 2, 4; column 2, lines 32-47; column 5, line 10 - column 7, line 28; column 9, lines 20-30 * – – – A US 2014 / 0139224 A1 (STOLAR RES CORP) May 22, 2014 1, 2 * figure 1; paragraphs [0025] - [0028], [0041] - [0057] * – – – – – Date on which the investigation was completed: The competent official: April 2025 KQP van Oers MSc. Netherlands Patent Office part of the Netherlands Enterprise Agency See explanation on the next page. direction: welding areas of engineering: defined according to International Patent Classification (IPC). Generosity of the cited literature: p state of T being of particular importance in itself: literature on theory or not published in time the technical principle underlying the invention in conjunction with other cited literature E: patent literature published on or after the filing a state of the art of particular importance date of the present application and of which the submission date or the priority date is before the something of importance belonging to category X or Y submission date of the present application being state of the art D: mentioned in the application referring to an unrecorded state of affairs e technique L: literature mentioned for other reasons literature published between priority and &: member of the same patent family; corresponding literature submission date APPENDIX Accompanying the Report on the State of the Art Survey Patent application 1044964 The appendix contains a list of patent applications or patents published elsewhere (so-called and of the same patent family), which correspond to patent specifications mentioned in the report. The statement has been compiled based on data from the computer file of the European severance agency as of April 8, 2025. The accuracy and completeness of this statement are neither guaranteed by the European Patent Office, nor guaranteed by the Netherlands Patent Office; the data are Provided for informational purposes. In the report mentioned Date of Corresponding Date of patent specification publication of patent specifications publication US 8515689 B2 20-08-2013 US 2009128156 A1 21-05-2009 US 9151822 B2 06-10-2015 US 2011156957 A1 30-06-2011 US 2014139224 A1 22-05-2014 (none) WRITTEN OPINION Patent application 1044964 Opening date: Priority date: October 2024 - 1 Applicant: classification of the subject : 1V3 / 08; G01R33 / 02 2Dutch Holding BV The written opinion contains an explanation of the following sections: Part I Basis of the written opinion Part II Priority Part III Determination of novelty, inventiveness and industrial applicability not possible Part IV The application relates to more than one invention Part V Reasoned statement regarding novelty, inventiveness and industrial applicability Part VI Other cited documents Part VII Other defects Other comments Part VIII The competent official: KQP van Oers MSc. Netherlands Patent Office part of the Netherlands Enterprise Agency Defined according to International Patent Classification (IPC). Written Opinion Patent application 1044964 Part I Basis of the written opinion The written opinion was prepared on the basis of the conclusions submitted on 21 October 2024. Part V Reasoned statement regarding novelty and inventiveness and industrial applicability Declaration Yourself Yes: conclusion(s) - No: conclusion(s) 1, 2 ventivity Yes: conclusion(s) - No: conclusion(s) - Industrial applicability Yes: conclusion(s) 1, 2 No: conclusion(s) - Literature and commentary the report concerning the state of the art study become the following publications names: 1: US 8515689 B2 (LI KUN) August 20, 2013 2: US 9151822 B2 (WAITE JAMES W) October 6, 2015 3: US 2014 / 0139224 A1 (STOLAR RES CORP) May 22, 2014 current 1 discloses a method for determining the location or course of a cable (see to 25, lines 16-19), comprising the steps of providing a measuring device ('cart-based line locator 700', see figure 7) that has at least two, on comprises coil sets ('EM detector coils 712') spaced at a measuring distance from each other, each coil set comprising a first coil and a second coil (see column 25, lines 55-60), where the first and the second spool of each spool set are at a mutual angle of 0-180° and where the first and the coils of the coil sets are connected to a measuring and calculating device ('locator receiver') ctronics 716'), configured for measuring the signal strengths of the individual coils capture cable signal (see column 26, lines 19-26); providing a cable source signal ('electric current', see column 25, lines 49-50) on the cable Arget line 704'); placing the measuring device at a location in the vicinity of the cable and measuring the needle strengths of the cable signals picked up by the various coils (see column 26, lines 5) and calculating from this the horizontal and vertical distance of the cable to the etinrichting (see column 26, lines 5-11).

Images