Distributed optical fiber measurement method and system for long-distance fire protection pipeline leakage

Abstract

The present invention belongs to the field of measurement technology, and specifically relates to testing by means of measuring the physical properties of materials, and more particularly to a distributed optical fiber measurement method and a measurement system for long-distance fire protection pipeline leakage, wherein the distributed optical fiber measurement method for long-distance fire protection pipeline leakage comprises: a control module is suitable for obtaining an abnormal comparison range; the control module obtains pipeline corresponding waveform signals detected by a plurality of optical fiber sensors, and then recombines all the waveform signals to construct a plurality of recombined signals, and compares the abnormal comparison range with the plurality of recombined signals to determine the leakage of the pipeline, and only compares and determines one recombined signal at the same time point, and cyclically detects each recombined signal, thereby reducing the demand for computing power and realizing accurate detection of the leakage of the fire protection pipeline.

Description

Technical Field

[0001] The invention belongs to the field of measurement technology, and specifically relates to testing by means of measuring the physical properties of materials, and more particularly to a distributed optical fiber measurement method and a measurement system for long-distance fire protection pipeline leakage. Background Art

[0002] In the related technology, a variety of fiber optic sensors are used to judge the leakage of fire pipes. However, there are many types of fiber optic data, and real-time analysis is required. The data storage and processing volume are large, and the signal needs to be analyzed point by point, which requires high computing power.

[0003] Therefore, due to the technical problem of large processing volume and high computing power requirements for judging the leakage of fire-fighting pipes, it is necessary to design a distributed optical fiber measurement method and measurement system for long-distance fire-fighting pipe leakage.

[0004] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0005] The embodiments of the present disclosure at least provide a distributed optical fiber measurement method and measurement system for long-distance fire protection pipeline leakage.

[0006] In a first aspect, an embodiment of the present disclosure provides a distributed optical fiber measurement method for long-distance fire protection pipeline leakage, comprising:

[0007] The control module is adapted to obtain an abnormal comparison range;

[0008] The control module obtains the corresponding waveform signals of the pipeline detected by multiple optical fiber sensors, and then recombines all the waveform signals to construct multiple recombined signals. The leakage situation of the pipeline is determined by comparing the abnormal comparison range with multiple recombined signals. At the same time point, only one recombined signal is compared and judged, and each recombined signal is detected cyclically.

[0009] In an optional implementation, the control module obtains waveform signals corresponding to pipelines detected by multiple optical fiber sensors, and then recombines all waveform signals to construct multiple recombined signals, including:

[0010] At least two types of optical fiber sensors are arranged on the pipeline, each type of optical fiber sensor detects the pipeline to obtain a corresponding waveform signal, and the control module is suitable for dividing the waveform signal to obtain a number of waveform segments, and recombining the waveform segments into recombined signals with the same number as the waveform signals. The length of the recombined signal is the same as the length of the waveform signal. In each recombined signal, the proportion of the length of the waveform segment corresponding to each type of optical fiber sensor is the same, and each waveform segment appears only once in all recombined signals at the same time.

[0011] The number of recombined signals at the same time corresponds to the type of optical fiber sensor.

[0012] In an optional embodiment, the method for determining the leakage of a pipeline by comparing the abnormal comparison range with a plurality of recombined signals includes:

[0013] Inserting the abnormal comparison range into the recombined signal waveform diagram to determine whether part of the waveform in the recombined signal falls into the abnormal comparison range;

[0014] Each type of optical fiber sensor has a corresponding abnormal comparison range;

[0015] When the same waveform segment in the recombined signal is simultaneously in the abnormal comparison range corresponding to the water leakage of all optical fiber sensors, it is judged that the pipeline portion corresponding to the waveform segment is in a serious water leakage situation;

[0016] When the same waveform segment in the reconstructed signal is only within the abnormal comparison range corresponding to the water leakage of some optical fiber sensors, it is judged that the pipeline portion corresponding to the waveform segment is in a slight water leakage situation;

[0017] When the same waveform segment in the reconstructed signal is within the abnormal comparison range corresponding to the impending water leakage of some optical fiber sensors or the impending water leakage of all optical fiber sensors, it is determined that the pipeline portion corresponding to the waveform segment is in the impending water leakage situation.

[0018] In an optional embodiment, the method of comparing and judging only one recombination signal at the same time point and cyclically detecting each recombination signal includes:

[0019] When the control module determines that there is a serious water leakage in the current recombined signal, it will make a judgment in other recombined signals. If the judgment result of the same waveform in other recombined signals is the same as that of the current recombined signal, then the verification is consistent and a recombined signal is saved. If the judgment result of the same waveform in other recombined signals is different from that of the current recombined signal, then the verification is inconsistent and the optical fiber sensor needs to be maintained.

[0020] All reorganization signals at the same moment are numbered sequentially. If there is no serious leakage, slight leakage or impending leakage in the current reorganization signal, the pipeline is judged to be normal at this time. The next moment, the next numbered reorganization signal is judged. After all reorganization signals are judged, the first numbered reorganization signal is judged again.

[0021] In an optional implementation, the method by which the control module is adapted to obtain an abnormal comparison range includes:

[0022] Connect multiple comparison sections to the pipeline, and set the same type of optical fiber sensors as those on the pipeline on the comparison sections, with some of the comparison sections corresponding to water leakage and some corresponding to impending water leakage;

[0023] The control module obtains the waveform of the comparison section corresponding to the water leakage through the optical fiber sensor, and obtains the upper value point and the lower value point in the waveform. The range from the minimum value to the maximum value in the upper value point is the partial abnormal comparison range corresponding to the water leakage. When judging the pipeline condition, the partial abnormal comparison range corresponds to the peak part of the recombined signal. The range from the minimum value to the maximum value in the lower value point is another partial abnormal comparison range corresponding to the water leakage. When judging the pipeline condition, the partial abnormal comparison range corresponds to the trough part of the recombined signal.

[0024] The control module obtains the waveform of the comparison segment corresponding to the impending water leakage through the optical fiber sensor, and obtains the upper value point and the lower value point in the waveform. The range from the minimum value to the maximum value in the upper value point is the partial abnormal comparison range corresponding to the impending water leakage. This partial abnormal comparison range corresponds to the peak part of the reorganized signal when judging the pipeline condition. The range from the minimum value to the maximum value in the lower value point is another partial abnormal comparison range corresponding to the impending water leakage. This partial abnormal comparison range corresponds to the trough part of the reorganized signal when judging the pipeline condition.

[0025] In a second aspect, the present disclosure also provides a distributed optical fiber measurement system for long-distance fire protection pipeline leakage, including:

[0026] a range module configured to obtain an abnormal comparison range;

[0027] A recombining module is configured to control the module to obtain waveform signals corresponding to the pipelines detected by multiple optical fiber sensors, and then recombines all waveform signals to construct multiple recombined signals;

[0028] The comparison module is configured to determine the water leakage condition of the acquisition pipeline by comparing the abnormal comparison range with the multiple recombined signals.

[0029] In a third aspect, the embodiments of the present disclosure further provide a computer-readable storage medium having a computer program / instruction stored thereon, which, when executed by a processor, implements the steps of the above-mentioned distributed optical fiber measurement method for long-distance fire protection pipeline leakage.

[0030] In a fourth aspect, the embodiments of the present disclosure further provide a computer program product, including a computer program / instruction, which, when executed by a processor, implements the steps of the above-mentioned distributed optical fiber measurement method for long-distance fire protection pipeline leakage.

[0031] In a fifth aspect, the embodiments of the present disclosure further provide a distributed optical fiber measurement device for long-distance fire protection pipeline leakage, including:

[0032] A control module, and at least two optical fiber sensors electrically connected to the control module;

[0033] The optical fiber sensor is arranged on the pipeline, and the optical fiber sensor is suitable for detecting and acquiring a waveform signal corresponding to the pipeline;

[0034] The control module is configured to use the above-mentioned distributed optical fiber measurement method for long-distance fire protection pipeline leakage to judge the pipeline condition according to the waveform signal.

[0035] In an optional embodiment, a plurality of comparison sections are provided on the pipeline, and optical fiber sensors of the same type as those on the pipeline are provided on the comparison sections, and some of the comparison sections correspond to water leakage conditions, and some correspond to impending water leakage conditions;

[0036] The control module is electrically connected to the optical fiber sensor provided on the comparison section, and is configured to obtain a waveform corresponding to a water leakage situation and a waveform corresponding to an impending water leakage situation according to the waveform detected by the optical fiber sensor on the comparison section.

[0037] The beneficial effect of the present invention is that the distributed optical fiber measurement method for long-distance fire protection pipeline leakage includes: a control module suitable for obtaining an abnormal comparison range; the control module obtains pipeline corresponding waveform signals detected by multiple optical fiber sensors, and then recombines all waveform signals to construct multiple recombined signals, and judges the leakage of the pipeline by comparing the abnormal comparison range with the multiple recombined signals, and only compares and judges one recombined signal at the same time point, and cyclically detects each recombined signal, thereby reducing the demand for computing power and realizing accurate detection of the leakage of the fire protection pipeline.

[0038] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1A flow chart of a distributed optical fiber measurement method for long-distance fire protection pipeline leakage provided by an embodiment of the present disclosure;

[0042] Figure 2 A schematic diagram of a recombination signal provided in an embodiment of the present disclosure;

[0043] Figure 3 A partial schematic diagram of an abnormal comparison range of an optical fiber sensor provided in an embodiment of the present disclosure;

[0044] Figure 4 A schematic diagram of another part of an abnormal comparison range of an optical fiber sensor provided by an embodiment of the present disclosure;

[0045] Figure 5 A schematic diagram of recombination signal determination provided by an embodiment of the present disclosure;

[0046] Figure 6 A schematic diagram of the cooperation between a fire protection pipe and an optical fiber sensor provided in an embodiment of the present disclosure.

[0047] In the figure:

[0048] 1. Fire protection pipe; 2. Sensor optical fiber. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0051] There is a water leakage problem in the fire protection pipeline. Traditionally, distributed optical fiber is used to detect whether the pipeline is leaking. The inventor found that traditional detection requires a variety of sensor optical fibers to collect pipeline data, and the data processing volume is large, that is, there are many categories of optical fiber data, and real-time analysis is required, the data processing volume is large, and the data needs to be saved. Due to the large number of categories, the data storage volume is also large. Traditionally, the signal needs to be analyzed point by point, and the computing power requirements are high. Traditional classification analysis requires data integration to verify whether there is a leak. At the same time, the data of serious leakage, minor leakage, and impending leakage are different. On the one hand, after processing each type of data, it is necessary to integrate them uniformly. At the same time, it is not necessarily possible to judge an impending leak.

[0052] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0053] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0054] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0055] like Figure 1 As shown, at least one disclosed embodiment provides a distributed optical fiber measurement method for long-distance fire protection pipeline leakage, including: a control module is suitable for obtaining an abnormal comparison range; the control module obtains waveform signals corresponding to the pipeline detected by multiple optical fiber sensors, and then recombines all the waveform signals to construct multiple recombined signals, and judges the leakage of the pipeline by comparing the abnormal comparison range with the multiple recombined signals, and only compares and judges one recombined signal at the same time point, and cyclically detects each recombined signal, thereby reducing the demand for computing power and realizing accurate detection of the leakage of the fire protection pipeline 1.

[0056] Specifically, see Figure 6 A sensing optical fiber 2 is arranged on the fire-fighting pipeline 1, and the sensing optical fiber 2 integrates a variety of optical fiber sensors.

[0057] Specifically, long distance refers to more than 5 kilometers.

[0058] In this embodiment, if there are three types of optical fiber sensors, three recombined signals are obtained at the same time point. If one recombined signal determines that the fire pipe 1 is normal, the remaining two recombined signals at this time point (moment) are not detected, thereby reducing the amount of data processing and the demand for computing power. In one cycle, different recombined signals are detected at different times. Even if some recombined signals determine that the fire pipe 1 is normal, if there is a problem with the fire pipe 1, it can be detected in other recombined signals at other times. While reducing the amount of data processing and the demand for computing power, the fire pipe 1 can also be accurately detected.

[0059] like Figure 2 As shown, in an optional embodiment, the control module obtains waveform signals corresponding to pipelines detected by multiple optical fiber sensors, and then recombines all waveform signals to construct multiple recombined signals, including: at least two optical fiber sensors are arranged on the pipeline, each optical fiber sensor detects the pipeline (fire fighting pipeline 1) to obtain a corresponding waveform signal, the control module is suitable for dividing the waveform signal to obtain a number of waveform segments, and recombining the waveform segments into recombined signals with the same number as the waveform signals, the length of the recombined signal is the same as the length of the waveform signal, the proportion of the length occupied by the waveform segment corresponding to each optical fiber sensor in each recombined signal is the same, and each waveform segment appears only once in all recombined signals at the same time; the number of recombined signals at the same time corresponds to the type of optical fiber sensor.

[0060] In this embodiment, three types of optical fiber sensors may be arranged on the pipeline, and each type of optical fiber sensor may obtain a corresponding waveform signal from the fire fighting pipeline 1 .

[0061] Specifically, the optical fiber sensor can adopt vibration sensing optical fiber, temperature sensing optical fiber, humidity sensing optical fiber.

[0062] In this embodiment, the control module can first divide the waveform signal separately. For example, after the unit is unified, the length of each waveform signal is 9 units of length, each waveform signal is divided into 9 waveform segments, each waveform segment corresponds to a unit length, and the length of the reorganized signal is 9 units of length. Each reorganized signal contains three waveform segments of each optical fiber sensor, so that the length of each reorganized signal is equal to the length of the original waveform signal, the number of waveform segments corresponding to each optical fiber sensor in each reorganized signal is the same, and the waveform segments corresponding to each optical fiber sensor occupy the same proportion of the entire reorganized signal length, and each waveform segment appears only once in all reorganized signals at the same time. By dividing and reorganizing the waveform signals of each optical fiber sensor, the waveforms detected and obtained by all optical fiber sensors are involved in the detection and judgment process of a reorganized signal, thereby avoiding the situation where a single optical fiber sensor may have an abnormality and cause inaccurate judgment.

[0063] In this embodiment, the position of each waveform segment in the reconstructed signal is the same as its position in the waveform signal.

[0064] like Figure 5 As shown, in an optional embodiment, the method for determining the leakage of a pipeline by comparing an abnormal comparison range with a plurality of recombined signals includes: inserting a comparison graph corresponding to the abnormal comparison range into a recombined signal waveform graph, and determining whether part of the waveform in the recombined signal falls into the abnormal comparison range; each type of optical fiber sensor has a corresponding abnormal comparison range; when in the recombined signal, the same section of the waveform in its waveform is simultaneously in the abnormal comparison range corresponding to the leakage of all optical fiber sensors, it is determined that the portion of the pipeline corresponding to the section of the waveform is in a serious leakage situation; when in the recombined signal, the same section of the waveform in its waveform is only in the abnormal comparison range corresponding to the leakage of some optical fiber sensors, it is determined that the portion of the pipeline corresponding to the section of the waveform is in a slight leakage situation; when in the recombined signal, the same section of the waveform in its waveform is in the abnormal comparison range corresponding to the leakage of some optical fiber sensors or all optical fiber sensors are in the abnormal comparison range corresponding to the leakage of some optical fiber sensors, it is determined that the portion of the pipeline corresponding to the section of the waveform is in a serious leakage situation.

[0065] In this embodiment, each type of optical fiber sensor has an abnormal comparison range corresponding to water leakage and an abnormal comparison range corresponding to impending water leakage.

[0066] In this embodiment, when judging the leakage of the fire-fighting pipe 1 by the recombined signal, if, when judging the current recombined signal, there is a waveform in the recombined signal that is in the abnormal comparison range corresponding to the leakage of all optical fiber sensors, the control module judges that the position of the fire-fighting pipe 1 corresponding to the waveform is in a serious leakage state. At this time, the control module compares and verifies through the other two recombined signals. If the same position of the fire-fighting pipe 1 is also judged as a serious leakage in the other two recombined signals, it means that the comparison and verification are consistent. At this time, only one recombined signal needs to be stored, and the other two recombined signals may not be stored, thereby reducing the amount of data storage. If they are inconsistent, it is judged that there is a problem with the optical fiber sensor, and the management personnel need to inspect and repair the optical fiber sensor.

[0067] In this embodiment, in the case of three types of optical fiber sensors, if when judging the current recombined signal, there is a waveform in the recombined signal, and the waveform is in the abnormal comparison range corresponding to the leakage of one or two optical fiber sensors, and is not in the abnormal comparison range corresponding to the leakage of other remaining optical fiber sensors, then it is judged that the fire pipe 1 corresponding to the waveform is in a slight leakage state; at this time, the control module compares and verifies through the recombined signals at other times. For example, if there are three types of optical fiber sensors, the comparison and verification is performed from the recombined signals at the other two times. The current moment forms a cycle with the other two moments. At the other two moments, the section of the fire pipe 1 is also judged to be in a slight leakage state. At this time, the consistent verification judgment indicates that the corresponding optical fiber sensor is normal. At this time, only one recombined signal needs to be stored in the recombined signal at each moment. If the verification judgment is inconsistent, the optical fiber sensor is judged to be abnormal, and the management personnel need to inspect the optical fiber sensor.

[0068] In this embodiment, if there is a waveform in the recombinant signal when judging the current recombinant signal, and the waveform is in the abnormal comparison range corresponding to when part or all of the optical fiber sensors are about to leak, then it is judged that the fire protection pipe 1 corresponding to the waveform is about to leak; the same method is used for comparison and verification to determine whether the optical fiber sensor is abnormal.

[0069] In an optional embodiment, the method of comparing and judging only one recombinant signal at the same time point and cyclically detecting each recombinant signal includes: when the control module judges that there is a serious water leakage in the current recombinant signal, it is judged in other recombinant signals at this time. If the judgment result for the same waveform segment in other recombinant signals is the same as that of the current recombinant signal, then the verification is consistent at this time, and one recombinant signal is saved. If the judgment result for the same waveform segment in other recombinant signals is different from that of the current recombinant signal, the verification is inconsistent at this time, and the optical fiber sensor needs to be maintained; all recombinant signals at the same time are sequentially numbered. If there is no serious water leakage, slight water leakage and impending water leakage in the current recombinant signal, it is judged that the pipeline is normal at this time, and the next numbered recombinant signal is judged at the next moment. After all recombinant signals are judged, the first numbered recombinant signal is judged again.

[0070] In this embodiment, if there are three recombinant signals at the same moment, numbered 1, 2, and 3 respectively, if at the current moment, the recombinant signal No. 1 of the three recombinant signals at that moment is detected and judged, then at the next moment, the recombinant signal No. 2 of the three recombinant signals at that moment is detected and judged, and at the next moment, the recombinant signal No. 3 of the three recombinant signals at that moment is detected and judged, so as to form a cycle.

[0071] Specifically, the time refers to the period during which a type of optical fiber sensor collects data corresponding to the complete fire protection pipeline 1 .

[0072] like Figure 3 and Figure 4 As shown, in an optional embodiment, the control module is suitable for obtaining the abnormal comparison range by a method comprising: connecting multiple comparison sections on the pipeline, and providing the comparison sections with optical fiber sensors of the same type as those on the pipeline, wherein part of the comparison sections corresponds to a water leakage situation, and part corresponds to an impending water leakage situation; the fire-fighting pipeline 1 situation corresponding to the comparison sections is one of a water leakage situation and an impending water leakage situation;

[0073] The control module obtains the waveform of the comparison section corresponding to the water leakage through the optical fiber sensor, and obtains the upper value point and the lower value point in the waveform. The range from the minimum value to the maximum value in the upper value point is the partial abnormal comparison range corresponding to the water leakage. When judging the pipeline condition, the partial abnormal comparison range corresponds to the peak part of the recombined signal. The range from the minimum value to the maximum value in the lower value point is another partial abnormal comparison range corresponding to the water leakage. When judging the pipeline condition, the partial abnormal comparison range corresponds to the trough part of the recombined signal.

[0074] The control module obtains the waveform of the comparison segment corresponding to the impending water leakage through the optical fiber sensor, and obtains the upper value point and the lower value point in the waveform. The range from the minimum value to the maximum value in the upper value point is the partial abnormal comparison range corresponding to the impending water leakage. This partial abnormal comparison range corresponds to the peak part of the reorganized signal when judging the pipeline condition. The range from the minimum value to the maximum value in the lower value point is another partial abnormal comparison range corresponding to the impending water leakage. This partial abnormal comparison range corresponds to the trough part of the reorganized signal when judging the pipeline condition.

[0075] In this embodiment, the waveforms obtained by each optical fiber sensor in the comparison section corresponding to the water leakage situation, in one waveform, the minimum to maximum value in the upper value points above the waveform baseline is used as a partial abnormal comparison range of the waveform corresponding to the water leakage situation of the optical fiber sensor, and the minimum to maximum value in the lower value points below the waveform baseline is used as another partial abnormal comparison range of the waveform corresponding to the water leakage situation of the optical fiber sensor. A comparison graph can be constructed based on the abnormal comparison range corresponding to the upper value point, and the graph can be a rectangle, etc. The width of the rectangle can correspond to the range from the minimum value to the maximum value in the upper value point. A comparison graph can be constructed based on the abnormal comparison range corresponding to the lower value point. The graphic can be a rectangle, and the width of the rectangle can correspond to the range from the minimum to the maximum value in the lower value point. When judging the recombined signal, the comparison graphic corresponding to the upper value point is directly inserted into the waveform part above the baseline corresponding to the recombined signal, and the comparison graphic corresponding to the lower value point is directly inserted into the waveform part below the baseline corresponding to the recombined signal. The water leakage situation can be intuitively judged by the overlapping part between the comparison graphic and the recombined signal. The recombined signal and the comparison graphic can be directly displayed on the display screen, and the situation of the fire-fighting pipe 1 can be intuitively judged, and the situation of the fire-fighting pipe 1 can be judged more conveniently and accurately; the abnormal comparison range of the leakage can be obtained in the same way.

[0076] Specifically, see Figure 2 The first recombined signal takes the first segment of the first optical fiber sensor waveform, the second segment of the second optical fiber sensor waveform and the third segment of the third optical fiber sensor waveform. The second recombined signal takes the third segment of the first optical fiber sensor waveform, the first segment of the second optical fiber sensor waveform and the second segment of the third optical fiber sensor waveform. The third recombined signal takes the second segment of the first optical fiber sensor waveform, the third segment of the second optical fiber sensor waveform and the first segment of the third optical fiber sensor waveform.

[0077] In this embodiment, if there are three types of optical fiber sensors, then there are three recombined signals corresponding to one moment, and one cycle corresponds to three moments, with a total of nine recombined signals.

[0078] At least one other disclosed embodiment also provides a distributed optical fiber measurement system for long-distance fire protection pipeline leakage, including: a range module, which is configured to obtain an abnormal comparison range; a reorganization module, which is configured to control the module to obtain waveform signals corresponding to the pipeline detected by multiple optical fiber sensors, and then reorganize all the waveform signals to construct multiple recombined signals; a comparison module, which is configured to determine the leakage condition of the pipeline by comparing the abnormal comparison range with the multiple recombined signals.

[0079] At least one other disclosed embodiment further provides a computer-readable storage medium having a computer program / instruction stored thereon, which, when executed by a processor, implements the steps of the above-mentioned distributed optical fiber measurement method for long-distance fire protection pipeline leakage.

[0080] At least one other disclosed embodiment further provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the steps of the above-mentioned distributed optical fiber measurement method for long-distance fire protection pipeline leakage.

[0081] At least one other disclosed embodiment also provides a distributed optical fiber measurement device for long-distance fire protection pipeline leakage, comprising: a control module, and at least two optical fiber sensors electrically connected to the control module; the optical fiber sensors are arranged on the pipeline, and the optical fiber sensors are suitable for detecting and obtaining waveform signals corresponding to the pipeline; the control module is configured to use the above-mentioned distributed optical fiber measurement method for long-distance fire protection pipeline leakage to judge the pipeline condition according to the waveform signal.

[0082] In an optional embodiment, a plurality of comparison sections are provided on the pipeline, and optical fiber sensors of the same type as those on the pipeline are provided on the comparison sections, and some of the comparison sections correspond to water leakage conditions, and some correspond to impending water leakage conditions;

[0083] The control module is electrically connected to the optical fiber sensor provided on the comparison section, and is configured to obtain a waveform corresponding to a water leakage situation and a waveform corresponding to an impending water leakage situation according to the waveform detected by the optical fiber sensor on the comparison section.

[0084] In this embodiment, the comparison section is connected to the fire-fighting pipe 1, and the connection position is controlled by a solenoid valve. When it is necessary to obtain the abnormal comparison range, the solenoid valve is opened to allow water in the fire-fighting pipe 1 to enter the comparison section, causing the comparison section to leak or be about to leak.

[0085] In summary, the distributed optical fiber measurement method for long-distance fire protection pipeline leakage includes: a control module suitable for obtaining an abnormal comparison range; the control module obtains pipeline corresponding waveform signals detected by multiple optical fiber sensors, and then recombines all waveform signals to construct multiple recombined signals, and judges the leakage of the pipeline by comparing the abnormal comparison range with the multiple recombined signals, and only compares and judges one recombined signal at the same time point, and cyclically detects each recombined signal, thereby reducing the demand for computing power and realizing accurate detection of the leakage of the fire protection pipeline.

[0086] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A distributed optical fiber measurement method for long-distance fire protection pipeline leakage, characterized in that: include: Obtain the abnormal comparison range through the control module; as well as The control module obtains the corresponding waveform signals of the pipeline detected by multiple optical fiber sensors, and then recombines all the waveform signals to construct multiple recombined signals. The leakage of the pipeline is determined by comparing the abnormal comparison range with the multiple recombined signals. At the same time point, only one recombined signal is compared and judged, and each recombined signal is detected cyclically. The method of obtaining waveform signals corresponding to pipelines detected by multiple optical fiber sensors through a control module and then recombining all waveform signals to construct multiple recombined signals includes: At least two types of optical fiber sensors are arranged on the pipeline, each type of optical fiber sensor detects the pipeline to obtain a corresponding waveform signal, and the control module is suitable for dividing the waveform signal to obtain a number of waveform segments, and recombining the waveform segments into recombined signals with the same number as the waveform signals. The length of the recombined signal is the same as the length of the waveform signal. In each recombined signal, the proportion of the length of the waveform segment corresponding to each type of optical fiber sensor is the same, and each waveform segment appears only once in all recombined signals at the same time. The number of recombined signals at the same time corresponds to the type of fiber optic sensor; The method for determining the water leakage of a pipeline by comparing the abnormal comparison range with a plurality of recombined signals comprises: Inserting the abnormal comparison range into the waveform diagram of the recombined signal to determine whether part of the waveform in the recombined signal falls into the abnormal comparison range; Each type of optical fiber sensor has a corresponding abnormal comparison range.

2. The distributed optical fiber measurement method for long-distance fire protection pipeline leakage according to claim 1, characterized in that: The method for determining the water leakage of the pipeline by comparing the abnormal comparison range with the multiple recombined signals also includes: When the same waveform segment in the recombined signal is simultaneously in the abnormal comparison range corresponding to the water leakage of all optical fiber sensors, it is determined that the pipeline portion corresponding to the same waveform segment is in a serious water leakage situation; When the same waveform in the reconstructed signal is only in the abnormal comparison range corresponding to the water leakage of some optical fiber sensors, it is determined that the pipeline portion corresponding to the same waveform in the abnormal comparison range corresponding to the water leakage of some optical fiber sensors is in a slight water leakage situation; When the same section of the waveform in the reconstructed signal is in the abnormal comparison range corresponding to the situation where some optical fiber sensors are about to leak or where all optical fiber sensors are about to leak, it is judged that the pipeline portion corresponding to the same section of the waveform in the situation where some optical fiber sensors are about to leak or in the abnormal comparison range corresponding to the situation where all optical fiber sensors are about to leak is about to leak.

3. The distributed optical fiber measurement method for long-distance fire protection pipeline leakage according to claim 2, characterized in that: The method of comparing and judging only one recombination signal at the same time point and cyclically detecting each recombination signal includes: When the control module determines that there is a serious water leakage in the current recombined signal, it will make a judgment in other recombined signals. If the judgment result of the same waveform in other recombined signals is the same as that of the current recombined signal, then the verification is consistent and a recombined signal is saved. If the judgment result of the same waveform in other recombined signals is different from that of the current recombined signal, then the verification is inconsistent and the optical fiber sensor needs to be maintained. All reorganization signals at the same moment are numbered sequentially. If there is no serious leakage, slight leakage or impending leakage in the current reorganization signal, the pipeline is judged to be normal at this time. The next moment, the next numbered reorganization signal is judged. After all reorganization signals are judged, the first numbered reorganization signal is judged again.

4. The distributed optical fiber measurement method for long-distance fire protection pipeline leakage according to claim 1, characterized in that: The method for the control module to obtain the abnormal comparison range includes: Connect multiple comparison sections to the pipeline, and set the comparison sections with the same type of optical fiber sensors as those on the pipeline, with some of the comparison sections corresponding to water leakage and some corresponding to impending water leakage; The control module obtains the waveform of the comparison section corresponding to the water leakage through the optical fiber sensor, obtains the first upper value point and the first lower value point in the waveform of the comparison section corresponding to the water leakage, the range from the minimum value to the maximum value in the first upper value point is the partial abnormal comparison range corresponding to the water leakage, and the partial abnormal comparison range corresponds to the peak part of the recombined signal when judging the pipeline condition, and the range from the minimum value to the maximum value in the first lower value point is another partial abnormal comparison range corresponding to the water leakage, and the other partial abnormal comparison range corresponds to the trough part of the recombined signal when judging the pipeline condition; The control module obtains the waveform of the comparison segment corresponding to the impending water leakage through the optical fiber sensor, obtains the second upper value point and the second lower value point in the waveform of the comparison segment corresponding to the impending water leakage, the range from the minimum value to the maximum value in the second upper value point is the partial abnormal comparison range corresponding to the impending water leakage, and the partial abnormal comparison range corresponding to the impending water leakage corresponds to the peak part of the reorganized signal when judging the pipeline condition, and the range from the minimum value to the maximum value in the second lower value point is another partial abnormal comparison range corresponding to the impending water leakage, and the other partial abnormal comparison range corresponding to the impending water leakage corresponds to the trough part of the reorganized signal when judging the pipeline condition.

5. A distributed optical fiber measurement system for long-distance fire protection pipeline leakage using the distributed optical fiber measurement method for long-distance fire protection pipeline leakage as claimed in any one of claims 1 to 4, characterized in that: include: a range module configured to obtain an abnormal comparison range; A recombining module is configured to obtain waveform signals corresponding to pipelines detected by multiple optical fiber sensors through the control module, and then recombines all waveform signals to construct multiple recombined signals; The comparison module is configured to determine the water leakage condition of the acquisition pipeline by comparing the abnormal comparison range with the multiple recombined signals.

6. A computer-readable storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instruction is executed by a processor, the steps of the distributed optical fiber measurement method for long-distance fire protection pipeline leakage as described in any one of claims 1-4 are implemented.

7. A computer program product comprising computer instructions, characterized in that When the computer instructions are executed by the processor, the steps of the distributed optical fiber measurement method for long-distance fire protection pipeline leakage described in any one of claims 1-4 are implemented.

8. A distributed optical fiber measurement device for long-distance fire protection pipeline leakage, characterized in that: include: A control module, and at least two optical fiber sensors electrically connected to the control module; The optical fiber sensor is arranged on the pipeline, and the optical fiber sensor is suitable for detecting and acquiring a waveform signal corresponding to the pipeline; The control module is configured to use the distributed optical fiber measurement method for long-distance fire protection pipeline leakage as described in any one of claims 1-4 to judge the pipeline condition based on the waveform signal.

9. The distributed optical fiber measurement device for long-distance fire protection pipeline leakage according to claim 8, characterized in that: Several comparison sections are arranged on the pipeline, and the same type of optical fiber sensors as those on the pipeline are arranged on the comparison sections, and some of the comparison sections correspond to water leakage and some correspond to impending water leakage; The control module is electrically connected to the optical fiber sensor provided on the comparison section, and is configured to obtain the waveform of the comparison section corresponding to the leakage situation and the waveform of the comparison section corresponding to the impending leakage situation according to the waveform detected by the optical fiber sensor on the comparison section.

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