Method and system for measuring temperature position of sinusoidal arrangement temperature measurement optical fiber

Abstract

The invention provides a temperature position measuring method and system for sinusoidal arrangement temperature measuring optical fibers, and relates to the technical field of cable temperature monitoring. The method comprises the steps of determining a cable arrangement width direction perpendicular to a cable extension direction, and obtaining a width laying size in the cable arrangement width direction; the extension laying size of the cable in the extension direction of the cable is obtained, and sine temperature measurement laying analysis is carried out in combination with the width laying size to form sine temperature measurement laying data; performing temperature measurement laying according to the sine temperature measurement laying data; collecting real-time temperature measurement monitoring information, and performing temperature monitoring analysis to form real-time temperature monitoring data; and according to the real-time temperature monitoring data, temperature abnormal position positioning analysis is carried out in combination with the sine temperature measurement laying data, and temperature abnormal position positioning data is formed. According to the method, accurate positioning of an over-temperature position is realized by reasonably laying and arranging the temperature measuring optical fibers in a sine wave form.

Description

Technical Field

[0001] The present invention relates to the technical field of cable temperature monitoring, and in particular to a temperature position measurement method and system of a sinusoidally arranged temperature measuring optical fiber. Background Art

[0002] Distributed Temperature Sensing System (DTS) is a new temperature measurement technology that has emerged recently. Compared with traditional temperature measurement methods, it has the advantages of long measurement distance, high measurement accuracy, fast response speed, anti-electromagnetic interference, and suitable for flammable and explosive dangerous places. It can be widely used in high-voltage cable online monitoring, power current carrying capacity analysis, traffic tunnel fire monitoring, oil and gas storage tank fire monitoring, etc. When using the fiber optic temperature sensing system to measure the temperature of the cable, generally a fiber optic cable is fixed in parallel on a cable; the length of the cable is equal to the length of the fiber optic cable. Once the cable temperature rises, the number of meters of the high temperature point displayed in the system can accurately know the location of the cable high temperature. If the scene is a cable tray or cable shaft with many cables arranged, the temperature sensing fiber optic cable should be laid in the form of a sine wave. This method can accurately measure the temperature of a large number of cables without changing the existing cable arrangement. It is a reliable and economical wiring method. However, when using the sine wave wiring, the positioning accuracy of the fiber optic temperature sensing system is greatly reduced, and the high temperature point position given by the system cannot accurately correspond to the high temperature position of the cable. Because the optical fiber is laid out in a wavy pattern, the length of the optical fiber is greater than the length of the cable under test.

[0003] Therefore, it is an urgent problem to be solved to design a temperature position measurement method and system of sinusoidally arranged temperature measuring optical fibers, and to accurately locate the over-temperature position by reasonably laying out the temperature measuring optical fibers in a sinusoidal wave form. Summary of the invention

[0004] The purpose of the present invention is to provide a temperature position measurement method for a sinusoidally arranged temperature measuring optical fiber. The method obtains the laying size of the cable to carry out a sinusoidal laying design for the temperature measuring optical fiber. While saving the usage and cost of the temperature measuring optical fiber, since the laying size of the cable is fully considered in the initial stage of laying, the method can locate the temperature anomaly point on the cable size by obtaining the distance information of the temperature anomaly point of the temperature measuring pipeline, thereby fully ensuring the accuracy of cable temperature monitoring.

[0005] The present invention also aims to provide a temperature position measurement system of sinusoidally arranged temperature measuring optical fibers. The system forms an integral system for accurately locating the over-temperature position of the cable in real time by providing sinusoidally laid temperature measuring optical fibers for cable temperature monitoring, a signal processing unit for collecting the optical fiber temperature measurement signals, and an over-temperature monitoring and analysis unit for performing temperature monitoring and analysis on the collected optical fiber temperature measurement signals, thereby providing an important material basis for accurately locating the over-temperature position of the cable.

[0006] In a first aspect, the present invention provides a temperature position measurement method of a sinusoidally arranged temperature measurement optical fiber, comprising: determining the cable arrangement width direction perpendicular to the cable extension direction, and obtaining the width laying dimension of the cable arrangement width direction; obtaining the extension laying dimension of the cable in the cable extension direction, and performing sinusoidal temperature measurement laying analysis in combination with the width laying dimension to form sinusoidal temperature measurement laying data; performing temperature measurement laying according to the sinusoidal temperature measurement laying data; collecting real-time temperature measurement monitoring information, and performing temperature monitoring analysis to form real-time temperature monitoring data; performing temperature abnormality position positioning analysis according to the real-time temperature monitoring data and in combination with the sinusoidal temperature measurement laying data to form temperature abnormality position positioning data.

[0007] In the present invention, the method obtains the laying size of the cable to carry out the sinusoidal laying design of the temperature measuring optical fiber, which saves the usage and cost of the temperature measuring optical fiber. At the same time, since the laying size of the cable is fully considered in the initial stage of laying, the temperature anomaly point on the cable size can be located by obtaining the distance information of the temperature anomaly point of the temperature measuring pipeline, thereby fully ensuring the accuracy of cable temperature monitoring.

[0008] As a possible implementation method, the extended laying dimension of the cable in the extension direction of the cable is obtained, and combined with the width laying dimension, a sinusoidal temperature measurement laying analysis is performed to form sinusoidal temperature measurement laying data, including: obtaining the extended laying dimension L and the width laying dimension W, performing a full-coverage laying analysis on the width direction of the cable arrangement, and forming full-width laying information in the width direction; according to the full-width laying information in the width direction, establishing the temperature measurement position positioning relationship information along the extension direction of the cable in a single cycle; combining the full-width laying information in the width direction and the temperature measurement position positioning relationship information to form the sinusoidal temperature measurement laying data.

[0009] In the present invention, the determination of the sinusoidal temperature measurement laying data mainly includes two aspects. The first aspect is that the dimensional relationship of the sinusoidal laying needs to be able to provide accurate dimensional correspondence information for the subsequent positioning of the temperature anomaly point, so as to ensure accurate dimensional positioning. The second aspect is the correspondence between the position of the temperature measuring optical fiber on the complete cycle and the cable laying dimensional position. This correspondence can be achieved after obtaining the position of the temperature anomaly point of the sinusoidally laid temperature measuring optical fiber on the periodic path. It can quickly locate the length extension position of the cable, thereby achieving accurate position positioning.

[0010] As a possible implementation method, the extended laying dimension L and the width laying dimension W are obtained, and a full-coverage laying analysis is performed in the width direction of the cable arrangement to form full-width laying information in the width direction, including: laying half-cycle of the width laying dimension W in the cable extension direction in a sinusoidal laying manner, and laying the temperature measuring optical fiber along the cable extension direction with the width laying dimension W as half amplitude; obtaining a complete temperature measuring optical fiber laying path to form a laying path in the entire cable extension direction.

[0011] In the present invention, for the temperature measuring optical fiber laid in a sinusoidal pattern, to ensure that the temperature measuring optical fiber can cover the complete temperature measurement range of all cables, it is necessary to make the laid sinusoidal path cover the entire width span in the arrangement width direction, and at the same time consider the ability to accurately locate the temperature anomaly position with the help of the sinusoidal dimension information, and to associate the sinusoidal period with the dimension in the cable arrangement width direction, and to establish the dimension connection in the two directions. A relatively simple way is that the period length of the half-period is the same as the laying width dimension, so that the half-period area formed is a square area, and the position correspondence can be quickly performed without considering the laying angle problem.

[0012] As a possible implementation method, the laying path satisfies the following conditions: the arc paths at the crests and troughs of the sinusoidal shape formed by the laying path are tangent to the boundary in the width direction of the cable arrangement and the straight laying segments at both ends; the center of the arc paths at the crests and troughs of the sinusoidal shape formed by the laying path is located on a straight line perpendicular to the extension direction of the cable at the maximum amplitude.

[0013] In the present invention, of course, in order to ensure the accuracy of positioning in the area formed by the half-cycle which is a square area, it is necessary to ensure that the arc portion of the sinusoidal path is tangent to the width edge and the straight laying segments adjacent to both sides, so as to ensure a one-to-one correspondence between the position points on the laying path and the cable extension dimensions, and the center position of the arc path segment needs to ensure that the paths on both sides are mirrored, so as to facilitate accurate positioning analysis using the size information of the arc path segment.

[0014] As a possible implementation method, based on the full-width laying information in the width direction, the temperature measurement position positioning relationship information along the cable extension direction within a single cycle is established, including: extracting a single complete sinusoidal path on the laying path, and establishing a periodic path coordinate system with the starting point of the single-cycle path as the origin, and the cable extension direction and the cable arrangement width direction as the coordinate system direction; in the periodic path coordinate system, the positional relationship between the length dimension and the width dimension is established according to the length dimension in the cable extension direction and the width dimension of the sinusoidal path point corresponding to the length dimension in the cable arrangement width direction, to form a periodic temperature measurement position positioning function S=F(L).

[0015] In the present invention, the relationship between the temperature measurement optical fiber path size and the cable laying size within a complete cycle is established, which can more directly determine the correspondence between the position point of the temperature measurement pipeline and the cable position point at any point within the cycle, and is an important reference data for subsequent positioning of temperature abnormality points within the cycle.

[0016] As a possible implementation method, real-time temperature measurement monitoring information is collected and temperature monitoring analysis is performed to form real-time temperature monitoring data, including: setting an over-temperature threshold, collecting real-time monitoring temperatures at different locations on the paving path and performing the following analysis: if the real-time monitoring temperature is not greater than the over-temperature threshold, normal temperature information is generated; if the real-time monitoring temperature is greater than the over-temperature threshold, over-temperature information is generated, and the over-temperature location detection path distance S is output. over .

[0017] In the present invention, after establishing a reasonable sinusoidal laying path, the temperature data of the temperature measuring pipeline can be collected for analysis. Of course, for temperature monitoring, as long as the set threshold is exceeded, it can be considered that an over-temperature abnormality has occurred at the location point. Here, the over-temperature threshold can be set according to actual needs or determined based on big data analysis.

[0018] As a possible implementation method, based on real-time temperature monitoring data and combined with sinusoidal temperature measurement laying data, the temperature abnormality position location analysis is performed to form temperature abnormality position location data, including: based on the over-temperature position detection path distance S over , and combined with the sinusoidal characteristics of the paving path, the period of the over-temperature point is analyzed to form the over-temperature period positioning information; based on the over-temperature period positioning information, combined with the periodic temperature measurement position positioning function S=F(L), over-temperature positioning analysis is performed to form temperature anomaly position positioning data.

[0019] In the present invention, after determining that an overtemperature situation has occurred, the information that can be directly obtained is the length of the temperature anomaly point on the temperature measuring optical fiber. By combining the laying path characteristics of the temperature measuring optical fiber, the specific location of the temperature anomaly point can be accurately analyzed and determined.

[0020] As a possible implementation method, according to the over-temperature position detection path distance S over , and combined with the sinusoidal characteristics of the laying path, the cycle of the over-temperature point is analyzed to form the over-temperature cycle positioning information, including: according to the radius R of the arc path at the peak and trough of the laying path and the periodic cable length 2W, the positive period path length S corresponding to the laying path is determined t ,in:

[0021] Detection path distance S according to over-temperature position over and the positive periodic path length S t , determine the number of cycles M where the overtemperature occurs, where Indicates taking An integer.

[0022] In the present invention, it can be understood that since the temperature measuring optical fiber path laid in a sinusoidal shape has arc sections at the peaks and troughs of the sinusoidal wave, the temperature measuring optical fiber laid in the entire cycle needs to consider the influence of the arc sections on the path length, thereby forming the most accurate length dimension of the laid path within the cycle, thereby determining in which sequential cycle the temperature anomaly point appears, which also realizes the preliminary positioning of the temperature anomaly position point.

[0023] As a possible implementation method, based on the over-temperature period positioning information, combined with the periodic temperature measurement position positioning function S = F (L), over-temperature positioning analysis is performed to form temperature abnormality position positioning data, including: based on the over-temperature position detection path distance S over and the positive periodic path length S t , determine the relative length ratio P of the over-temperature period, where: Indicates taking The remainder; According to the relative length ratio P of the over-temperature period and the period cable length 2W, determine the over-temperature position point detection period distance S 0 , where: S 0 =P*2W; according to the over-temperature position point detection cycle distance S 0 , determine the over-temperature width distance of the over-temperature position point in the cable arrangement width direction; according to the over-temperature width distance, combined with the periodic temperature measurement position positioning function S = F (L), determine the periodic over-temperature distance S of the over-temperature position point along the cable extension direction during the detection period 1 ; According to the over-temperature distance S within the cycle 1 , the number of cycles where the overtemperature occurs M and the length of the cycle cable 2W, determine the extension distance S of the overtemperature location point 2 , where: S 2 =2W*(M-1)+S 1 .

[0024] In the present invention, after determining which cycle the temperature anomaly belongs to, it is necessary to accurately locate it in combination with the corresponding relationship between the temperature measurement optical fiber path size and the cable extension size. Of course, the position of the temperature anomaly point on the temperature measurement path within the cycle should be determined first, and then the periodic temperature measurement position positioning function should be combined to achieve accurate positioning.

[0025] In the second aspect, the present invention provides a temperature position measurement system of a sinusoidally arranged temperature measuring optical fiber, comprising: a temperature measuring optical fiber for laying a sinusoidal path along the extension direction of the cable; a signal processing unit connected to the temperature measuring optical fiber, for obtaining the real-time monitoring temperature of the temperature measuring optical fiber at different positions; an over-temperature monitoring and analysis unit, and the signal processing unit, for obtaining the real-time monitoring temperature collected by the signal processing unit, and performing positioning analysis of the over-temperature position point, and outputting the over-temperature position point.

[0026] In the present invention, a sinusoidally laid temperature measuring optical fiber for cable temperature monitoring, a signal processing unit for collecting optical fiber temperature measurement signals, and an over-temperature monitoring and analysis unit for temperature monitoring and analysis of the collected optical fiber temperature measurement signals are provided, forming an overall system for accurately locating the over-temperature position of the cable in real time, thereby providing an important material basis for accurately locating the over-temperature position of the cable.

[0027] The temperature position measurement method and system of a sinusoidally arranged temperature measuring optical fiber provided by the present invention have the following beneficial effects:

[0028] This method obtains the laying size of the cable to design the laying of the temperature measuring optical fiber in a sinusoidal wave form. While saving the usage and cost of the temperature measuring optical fiber, since the laying size of the cable is fully considered in the initial stage of laying, the method can locate the temperature anomaly point on the cable size by obtaining the distance information of the temperature anomaly point of the temperature measuring pipeline, thereby fully ensuring the accuracy of cable temperature monitoring.

[0029] The system forms an integral system for accurately locating the over-temperature position of the cable in real time by providing a sinusoidally laid temperature measuring optical fiber for cable temperature monitoring, a signal processing unit for collecting the optical fiber temperature measurement signal, and an over-temperature monitoring and analysis unit for temperature monitoring and analysis of the collected optical fiber temperature measurement signal, thereby providing an important material basis for accurately locating the over-temperature position of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of a method for measuring the temperature position of a sinusoidally arranged temperature measuring optical fiber provided in an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the sinusoidal size relationship of the temperature position measurement method of the sinusoidally arranged temperature measuring optical fiber provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] Distributed Temperature Sensing System (DTS) is a new temperature measurement technology that has emerged recently. Compared with traditional temperature measurement methods, it has the advantages of long measurement distance, high measurement accuracy, fast response speed, anti-electromagnetic interference, and suitable for dangerous places such as flammable and explosive. It can be widely used in high-voltage cable online monitoring, power current carrying capacity analysis, traffic tunnel fire monitoring, oil and gas storage tank fire monitoring, etc.

[0035] When using a fiber optic temperature sensing system to measure the temperature of a cable, an optical fiber is generally fixed parallel to a cable; the length of the cable is equal to the length of the optical fiber. Once the cable temperature rises, the number of meters of the high temperature point displayed in the system can accurately know the location of the high temperature of the cable. If the scenario is a cable tray or cable shaft with many cables arranged, the temperature-sensing optical fiber must be laid out in a sinusoidal wave form. This method can accurately measure the temperature of a large number of cables without changing the existing cable arrangement. It is a reliable and economical wiring method. However, when using sinusoidal wave wiring, the positioning accuracy of the fiber optic temperature sensing system is greatly reduced, and the high temperature point position given by the system cannot accurately correspond to the high temperature position of the cable. Because the fiber is laid out in a wavy shape, the length of the optical fiber is greater than the length of the cable being measured.

[0036] refer to Figure 1 , Figure 2 The embodiment of the present invention provides a temperature position measurement method of a sinusoidally arranged temperature measuring optical fiber. The method obtains the laying size of the cable to design the laying of the temperature measuring optical fiber in a sinusoidal wave form. While saving the usage and cost of the temperature measuring optical fiber, since the laying size of the cable is fully considered in the initial stage of laying, the temperature abnormality point on the cable size can be located by obtaining the distance information of the temperature abnormality point of the temperature measuring pipeline, thereby fully ensuring the accuracy of cable temperature monitoring.

[0037] The method specifically comprises the following steps:

[0038] S1: Determine the cable arrangement width direction perpendicular to the cable extension direction, and obtain the width laying dimension of the cable arrangement width direction.

[0039] Since the temperature measuring optical fiber is laid in a sinusoidal shape in order to monitor the temperature of the cable, it is necessary to obtain the size of the cable.

[0040] S2: Obtain the extension laying dimension of the cable in the extension direction of the cable, and perform sinusoidal temperature measurement laying analysis in combination with the width laying dimension to form sinusoidal temperature measurement laying data.

[0041] The extended laying dimension of the cable in the extension direction of the cable is obtained, and combined with the width laying dimension, a sinusoidal temperature measurement laying analysis is performed to form sinusoidal temperature measurement laying data, including: obtaining the extended laying dimension L and the width laying dimension w, and performing a full-coverage laying analysis of the amplitude in the width direction of the cable arrangement to form full-width laying information in the width direction; according to the full-width laying information in the width direction, the temperature measurement position positioning relationship information along the extension direction of the cable in a single cycle is established; the full-width laying information in the width direction and the temperature measurement position positioning relationship information are combined to form the sinusoidal temperature measurement laying data.

[0042] The determination of sinusoidal temperature measurement laying data mainly includes two aspects. The first aspect is that the dimensional relationship of sinusoidal laying needs to provide accurate dimensional correspondence information for the later positioning of temperature anomaly points to ensure accurate dimensional positioning. The second aspect is the correspondence between the position of the temperature measuring optical fiber on the complete cycle and the cable laying dimensional position. This correspondence can be achieved after obtaining the position of the temperature anomaly point of the sinusoidal temperature measuring optical fiber on the periodic path. It can quickly locate the length extension position of the cable, thereby achieving accurate position positioning.

[0043] The extended laying dimension L and the width laying dimension W are obtained, and a full-coverage laying analysis is performed in the width direction of the cable arrangement to form full-width laying information in the width direction, including: laying half-cycle of the laying in the cable extension direction in a sinusoidal laying manner with the width laying dimension W as the half amplitude, and laying the temperature measuring optical fiber along the cable extension direction; a complete temperature measuring optical fiber laying path is obtained to form a laying path in the entire cable extension direction.

[0044] For the temperature measuring optical fiber laid in a sinusoidal pattern, to ensure that the temperature measuring optical fiber can cover the full range of temperature measurement of all cables, it is necessary to make the laid sinusoidal path cover the entire width span in the arrangement width direction. At the same time, considering the ability to accurately locate the temperature anomaly with the help of the sinusoidal dimension information, it is necessary to associate the sinusoidal period with the dimension in the cable arrangement width direction and establish the dimension connection in the two directions. A relatively simple way is to make the period length of the half-period the same as the laying width dimension, so that the half-period area formed is a square area, and the position correspondence can be quickly performed without considering the laying angle problem.

[0045] The laying path satisfies the following conditions: the arc paths at the crests and troughs of the sinusoidal shape formed by the laying path are tangent to the boundary in the width direction of the cable arrangement and the straight laying segments at both ends; the center of the arc paths at the crests and troughs of the sinusoidal shape formed by the laying path is located on a straight line perpendicular to the extension direction of the cable at the maximum amplitude.

[0046] Of course, in order to ensure the accuracy of positioning in the square area formed by the half-cycle, it is necessary to ensure that the arc part of the sinusoidal path is tangent to the width edge and the adjacent straight laying segments on both sides. This can ensure a one-to-one correspondence between the position points on the laying path and the cable extension dimensions, and the center position of the arc path segment needs to ensure that the paths on both sides are mirrored, so that it is convenient to use the size information of the arc section for accurate positioning analysis.

[0047] According to the full-width laying information in the width direction, the temperature measurement position positioning relationship information along the cable extension direction within a single cycle is established, including: extracting a single complete sinusoidal path on the laying path, and establishing a periodic path coordinate system with the starting point of the single-cycle path as the origin, and the cable extension direction and the cable arrangement width direction as the coordinate system direction; in the periodic path coordinate system, the positional relationship between the length dimension and the width dimension is established according to the length dimension in the cable extension direction and the width dimension of the sinusoidal path point corresponding to the length dimension in the cable arrangement width direction, to form a periodic temperature measurement position positioning function S=F(L).

[0048] Establishing the relationship between the temperature measurement optical fiber path size and the cable laying size within a complete cycle can more directly determine the correspondence between the location point of the temperature measurement pipeline and the cable location point at any point within the cycle, which is an important reference data for locating the temperature anomaly point in the subsequent cycle.

[0049] S3: Perform temperature measurement laying according to the sinusoidal temperature measurement laying data.

[0050] After determining the size information of the temperature measuring optical fiber for sinusoidal laying, the laying and setting can be carried out.

[0051] S4: Collect real-time temperature measurement monitoring information, and perform temperature monitoring analysis to form real-time temperature monitoring data.

[0052] Collect real-time temperature monitoring information and perform temperature monitoring analysis to form real-time temperature monitoring data, including: setting an over-temperature threshold, collecting real-time monitoring temperatures at different locations on the laying path and performing the following analysis: if the real-time monitoring temperature is not greater than the over-temperature threshold, normal temperature information is generated; if the real-time monitoring temperature is greater than the over-temperature threshold, over-temperature information is generated and the over-temperature location detection path distance S is output over .

[0053] After establishing a reasonable sinusoidal laying path, the temperature data of the temperature measuring pipeline can be collected for analysis. Of course, for temperature monitoring, as long as the set threshold is exceeded, it can be considered that an over-temperature abnormality has occurred at the location point. Here, the over-temperature threshold can be set according to actual needs or determined based on big data analysis.

[0054] S5: Based on the real-time temperature monitoring data and combined with the sinusoidal temperature measurement laying data, the temperature anomaly position positioning analysis is performed to form the temperature anomaly position positioning data.

[0055] Based on the real-time temperature monitoring data and the sinusoidal temperature measurement laying data, the abnormal temperature position location analysis is performed to form the abnormal temperature position location data, including: based on the over-temperature position detection path distance S over , and combined with the sinusoidal characteristics of the paving path, the period of the over-temperature point is analyzed to form the over-temperature period positioning information; based on the over-temperature period positioning information, combined with the periodic temperature measurement position positioning function S=F(L), over-temperature positioning analysis is performed to form temperature anomaly position positioning data.

[0056] After determining that overtemperature has occurred, the information that can be directly obtained is the length of the temperature anomaly point on the temperature measuring optical fiber. By combining the laying path characteristics of the temperature measuring optical fiber, the specific location of the temperature anomaly point can be accurately analyzed and determined.

[0057] Detection path distance S according to over-temperature position over , and combined with the sinusoidal characteristics of the laying path, the cycle of the over-temperature point is analyzed to form the over-temperature cycle positioning information, including: according to the radius R of the arc path at the peak and trough of the laying path and the periodic cable length 2W, the positive period path length S corresponding to the laying path is determined t ,in:

[0058] Detection path distance S according to over-temperature position over and the positive periodic path length S t , determine the number of cycles M where the overtemperature occurs, where Indicates taking An integer.

[0059] It can be understood that since the temperature measurement optical fiber path laid in a sinusoidal shape has arc sections at the peaks and troughs of the sinusoidal wave, the temperature measurement optical fiber laid in the entire cycle needs to consider the influence of the arc sections on the path length, and then form the most accurate length dimension of the laid path within the cycle, so as to determine in which sequential cycle the temperature anomaly point appears, which also realizes the preliminary positioning of the temperature anomaly point.

[0060] Based on the over-temperature period positioning information, combined with the periodic temperature measurement position positioning function S = F (L), over-temperature positioning analysis is performed to form temperature abnormality position positioning data, including: based on the over-temperature position detection path distance S over and the positive periodic path length S t , determine the relative length ratio P of the over-temperature period, where: Indicates taking The remainder; According to the relative length ratio P of the over-temperature period and the period cable length 2W, determine the over-temperature position point detection period distance S 0 , where: S 0 =P*2W; according to the over-temperature position point detection cycle distance S 0 , determine the over-temperature width distance of the over-temperature position point in the cable arrangement width direction; according to the over-temperature width distance, combined with the periodic temperature measurement position positioning function S = F (L), determine the periodic over-temperature distance S of the over-temperature position point along the cable extension direction during the detection period 1 ; According to the over-temperature distance S within the cycle 1 , the number of cycles where the overtemperature occurs M and the length of the cycle cable 2W, determine the extension distance S of the overtemperature location point 2 , where: S 2 =2W*(M-1)+S 1 .

[0061] After determining which cycle the temperature anomaly belongs to, it is necessary to accurately locate it by combining the corresponding relationship between the temperature measurement optical fiber path size and the cable extension size. Of course, the location of the temperature anomaly on the temperature measurement path within the cycle should be determined first, and then the periodic temperature measurement position positioning function should be combined to achieve accurate positioning.

[0062] The present invention also provides a temperature position measurement system of a sinusoidally arranged temperature measuring optical fiber, comprising: a temperature measuring optical fiber, used for laying a sinusoidal path along the extension direction of the cable; a signal processing unit, connected to the temperature measuring optical fiber, used for obtaining the real-time monitoring temperature of the temperature measuring optical fiber at different positions; an over-temperature monitoring and analysis unit, and the signal processing unit, used for obtaining the real-time monitoring temperature collected by the signal processing unit, and performing positioning analysis of the over-temperature position point, and outputting the over-temperature position point.

[0063] The system provides a sinusoidally laid temperature measuring optical fiber for cable temperature monitoring, a signal processing unit for collecting the optical fiber temperature measurement signal, and an over-temperature monitoring and analysis unit for temperature monitoring and analysis of the collected optical fiber temperature measurement signal, forming an overall system for accurately locating the over-temperature position of the cable in real time, providing an important material basis for accurately locating the over-temperature position of the cable. The system provides a sinusoidally laid temperature measuring optical fiber for cable temperature monitoring, a signal processing unit for collecting the optical fiber temperature measurement signal, and an over-temperature monitoring and analysis unit for temperature monitoring and analysis of the collected optical fiber temperature measurement signal, forming an overall system for accurately locating the over-temperature position of the cable in real time, providing an important material basis for accurately locating the over-temperature position of the cable.

[0064] In summary, the temperature position measurement method and system of the sinusoidally arranged temperature measuring optical fiber provided in the embodiments of the present invention have the following beneficial effects:

[0065] This method obtains the laying size of the cable to design the laying of the temperature measuring optical fiber in a sinusoidal wave form. While saving the usage and cost of the temperature measuring optical fiber, since the laying size of the cable is fully considered in the initial stage of laying, the method can locate the temperature anomaly point on the cable size by obtaining the distance information of the temperature anomaly point of the temperature measuring pipeline, thereby fully ensuring the accuracy of cable temperature monitoring.

[0066] The system forms an integral system for accurately locating the over-temperature position of the cable in real time by providing a sinusoidally laid temperature measuring optical fiber for cable temperature monitoring, a signal processing unit for collecting the optical fiber temperature measurement signal, and an over-temperature monitoring and analysis unit for temperature monitoring and analysis of the collected optical fiber temperature measurement signal, thereby providing an important material basis for accurately locating the over-temperature position of the cable.

[0067] In the embodiments of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved by means of the arrangement order of each piece of information agreed in advance (for example, specified by the protocol), thereby reducing the indication overhead to a certain extent. At the same time, the common parts of each piece of information can also be identified and indicated uniformly to reduce the indication overhead caused by indicating the same information separately.

[0068] In addition, the specific indication method may also be various existing indication methods, such as but not limited to the above-mentioned indication methods and various combinations thereof. The specific details of the various indication methods can refer to the prior art and will not be repeated herein. As can be seen from the above, for example, when it is necessary to indicate multiple information of the same type, different indication methods may be used for different information. In the specific implementation process, the desired indication method can be selected according to specific needs. The embodiment of the present application does not limit the selected indication method. In this way, the indication method involved in the embodiment of the present application should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.

[0069] It should be understood that the information to be indicated can be sent as a whole, or divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different. The specific sending method is not limited in the embodiment of the present application. Among them, the sending period and / or sending time of these sub-information can be pre-defined, for example, pre-defined according to a protocol, or can be configured by the sending end device by sending configuration information to the receiving end device.

[0070] "Pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in the device, and the embodiments of the present application do not limit the specific implementation method. Among them, "saving" can mean saving in one or more memories. The one or more memories can be set separately or integrated in an encoder or decoder, a processor, or a communication device. The one or more memories can also be partially set separately and partially integrated in a decoder, a processor, or a communication device. The type of memory can be any form of storage medium, which is not limited by the embodiments of the present application.

[0071] The "protocol" involved in the embodiments of the present application may refer to a protocol family in the communication field, a standard protocol with a similar protocol family frame structure, or a related protocol used in future communication systems, and the embodiments of the present application do not make specific limitations on this.

[0072] In the embodiments of the present application, descriptions such as "when...", "in the case of...", "if" and "if" all mean that the device will make corresponding processing under certain objective circumstances. It does not limit the time, nor does it require the device to have a judgment action when implementing it, nor does it mean that there are other limitations.

[0073] In the description of the embodiments of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the embodiments of the present application is only a description of the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, in the description of the embodiments of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or its similar expression refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solution of the embodiments of the present application, in the embodiments of the present application, the words "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. Those skilled in the art will appreciate that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference. At the same time, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0074] It should be understood that the processor in the embodiments of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0075] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0076] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0077] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0078] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0079] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0080] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0081] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0082] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0083] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0084] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0085] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0086] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for measuring the temperature position of a sinusoidally arranged temperature measuring optical fiber, characterized in that: include: Determine the cable arrangement width direction perpendicular to the cable extension direction, and obtain the width laying dimension of the cable arrangement width direction; Acquire the extension laying dimension of the cable in the extension direction of the cable, and perform sinusoidal temperature measurement laying analysis in combination with the width laying dimension to form the sinusoidal temperature measurement laying data; Performing temperature measurement paving according to the sinusoidal temperature measurement paving data; Collect real-time temperature monitoring information, conduct temperature monitoring analysis, and form real-time temperature monitoring data; Based on the real-time temperature monitoring data and in combination with the sinusoidal temperature measurement laying data, temperature anomaly position location analysis is performed to form temperature anomaly position location data.

2. The temperature position measurement method of the sinusoidal arrangement temperature measuring optical fiber according to claim 1, characterized in that: The obtaining of the extension laying dimension of the cable in the extension direction of the cable and combining the width laying dimension to perform sinusoidal temperature measurement laying analysis to form the sinusoidal temperature measurement laying data includes: Obtaining the extended laying dimension L and the width laying dimension W, performing full coverage laying analysis in the width direction of the cable arrangement, and forming full width laying information in the width direction; According to the full-width laying information in the width direction, establishing the temperature measurement position positioning relationship information along the extension direction of the cable in a single cycle; The full-width paving information in the width direction and the temperature measurement position positioning relationship information are collected to form the sinusoidal temperature measurement paving data.

3. The temperature position measurement method of the sinusoidal arrangement temperature measuring optical fiber according to claim 2, characterized in that: The step of obtaining the extended laying dimension L and the width laying dimension W, performing full coverage laying analysis in the width direction of the cable arrangement, and forming full width laying information in the width direction includes: The temperature measuring optical fiber is laid along the extension direction of the cable using a sinusoidal laying method with the width W as the laying half period in the extension direction of the cable and the width W as the half amplitude; A complete laying path of the temperature measuring optical fiber is obtained to form a laying path in the entire extension direction of the cable.

4. The temperature position measurement method of the sinusoidal arrangement temperature measuring optical fiber according to claim 3, characterized in that: The paving path meets the following conditions: The arc paths at the crests and troughs of the sinusoidal shape formed by the laying path are simultaneously tangent to the boundary of the cable arrangement in the width direction and the straight laying segments at both ends; The center of the arc path of the sinusoidal crests and troughs formed by the laying path is located on a straight line perpendicular to the extension direction of the cable at the maximum amplitude.

5. The temperature position measurement method of the sinusoidal arrangement temperature measuring optical fiber according to claim 4, characterized in that: The step of establishing the temperature measurement position location relationship information along the extension direction of the cable in a single cycle according to the full width laying information includes: Extracting a single complete sinusoidal path on the laying path, and establishing a periodic path coordinate system with the starting point of the single-cycle path as the origin, and with the cable extension direction and the cable arrangement width direction as the coordinate system directions; In the periodic path coordinate system, the positional relationship between the length dimension and the width dimension is established according to the length dimension in the cable extension direction and the width dimension of the sinusoidal path point corresponding to the length dimension in the cable arrangement width direction, forming a periodic temperature measurement position positioning function S=F(L).

6. The temperature position measurement method of the sinusoidal arrangement temperature measuring optical fiber according to claim 5, characterized in that: The real-time temperature monitoring information is collected and analyzed to form real-time temperature monitoring data, including: Set an over-temperature threshold, collect real-time monitoring temperatures at different locations on the paving path, and perform the following analysis: If the real-time monitored temperature is not greater than the over-temperature threshold, normal temperature information is generated; If the real-time monitoring temperature is greater than the over-temperature threshold, over-temperature information is generated and the over-temperature position detection path distance S is output. over .

7. The temperature position measurement method of the sinusoidal arrangement temperature measuring optical fiber according to claim 6, characterized in that: The method of performing temperature abnormality location analysis based on the real-time temperature monitoring data and combining the sinusoidal temperature measurement laying data to form temperature abnormality location location data includes: According to the over-temperature position detection path distance S over , and combined with the sinusoidal characteristics of the paving path, analyze the period where the over-temperature point is located to form over-temperature period positioning information; Based on the over-temperature period positioning information, and in combination with the periodic temperature measurement position positioning function S=F(L), over-temperature positioning analysis is performed to form temperature abnormality position positioning data.

8. The temperature position measurement method of the sinusoidal arrangement temperature measuring optical fiber according to claim 7, characterized in that: The over-temperature position detection path distance S over , and combined with the sinusoidal characteristics of the paving path, analyze the period where the over-temperature point is located to form over-temperature period positioning information, including: According to the radius R of the arc path at the peak and trough of the laying path and the periodic cable length 2W, the positive periodic path length S corresponding to the laying path is determined. t ,in: According to the over-temperature position detection path distance S over and the positive cycle path length S t , determine the number of cycles M where the overtemperature occurs, where Indicates taking An integer.

9. The temperature position measurement method of the sinusoidal arrangement temperature measuring optical fiber according to claim 8, characterized in that: The over-temperature positioning analysis is performed based on the over-temperature period positioning information and in combination with the periodic temperature measurement position positioning function S=F(L) to form temperature abnormality position positioning data, including: According to the over-temperature position detection path distance S over and the positive cycle path length S t , determine the relative length ratio P of the over-temperature period, where: Indicates taking The remainder of According to the relative length ratio P of the over-temperature period and the periodic cable length 2W, the over-temperature position point detection period distance S0 is determined, where: S0=P*2W; According to the over-temperature position point detection cycle distance S0, determining the over-temperature width distance of the over-temperature position point in the cable arrangement width direction; According to the over-temperature width distance, and in combination with the periodic temperature measurement position positioning function S=F(L), the periodic over-temperature distance S1 of the over-temperature position point along the extension direction of the cable within the detection period is determined; According to the over-temperature distance S1 within the cycle, the number of cycles where the over-temperature occurs M, and the cable length 2W of the cycle, the distance S2 in the extension direction of the over-temperature location point is determined, where: S2 = 2W*(M-1)+S1.

10. A temperature position measurement system of a sinusoidally arranged temperature measuring optical fiber, using the temperature position measurement method of a sinusoidally arranged temperature measuring optical fiber according to any one of claims 1 to 9, characterized in that: include: Temperature measuring optical fiber, used for laying a sinusoidal path along the direction of cable extension; A signal processing unit connected to the temperature measuring optical fiber, used to obtain the real-time monitoring temperature of the temperature measuring optical fiber at different positions; The over-temperature monitoring and analysis unit and the signal processing unit are used to obtain the real-time monitoring temperature collected by the signal processing unit, perform positioning analysis on the over-temperature position point, and output the over-temperature position point.

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