Distribution cable channel temperature measurement monitoring system and method

Abstract

The invention provides a distribution cable channel temperature measurement monitoring system and method, and relates to the technical field of cable channel temperature measurement monitoring, and the system comprises a temperature measurement host, a temperature measurement optical fiber, and a 5G communication module. Wherein the temperature measurement optical fiber is arranged in a cable channel, penetrates through the cable channel and is used for acquiring environment temperature information in the cable channel, and the temperature measurement optical fiber is further connected with the temperature measurement host and transmits the acquired environment temperature information to the temperature measurement host; and the temperature measurement host is in communication connection with the 5G communication module, and the temperature measurement host performs real-time temperature monitoring based on the environment temperature information and outputs alarm information to the 5G communication module according to a temperature monitoring result. According to the invention, the temperature information in the cable channel can be detected in real time through the temperature measurement host and the temperature measurement optical fiber, and when the temperature is abnormal, corresponding alarm information can be sent out to prompt a worker, so that the real-time monitoring of the environment temperature of the cable channel is realized.

Description

Technical Field

[0001] The present application relates to the technical field of cable channel temperature measurement and monitoring, and in particular to a distribution cable channel temperature measurement and monitoring system and method. Background Art

[0002] Due to limited corridor resources in the core urban area, the 10 kV cable channel capacity designed in the early urban planning is difficult to meet the rapid growth of load, resulting in the stacking of cables in local trunk cable channels. At the same time, a large number of low-voltage lines, communication cables, etc. are laid in the same trench as high-voltage cable channels. The low-voltage cables are prone to short-circuit fires, igniting the optical fibers and high-voltage cables in the same trench, causing major cable group damage incidents.

[0003] Some companies have explored the construction and application of multi-dimensional sensing systems for urban cables and channels. However, due to the problems of short built-in battery life, unstable communication, no state self-checking function, and low online rate, the multi-dimensional sensing terminal cannot adapt to the complex and harsh operating environment of the distribution cable channel. At the same time, the terminal can only monitor a single cable well and cannot effectively monitor a large number of cable trench areas, resulting in a low level of practicality of the existing cable channel fire monitoring system. Summary of the invention

[0004] The embodiments of the present application provide a temperature measurement and monitoring system and method for a power distribution cable channel to solve the technical problems existing in the prior art.

[0005] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0006] According to a first aspect of an embodiment of the present application, a temperature measurement and monitoring system for a power distribution cable channel is provided, comprising: a temperature measurement host, a temperature measurement optical fiber, and a 5G communication module;

[0007] The temperature measuring optical fiber is arranged in the cable channel and runs through the cable channel to obtain the ambient temperature information in the cable channel. The temperature measuring optical fiber is also connected to the temperature measuring host to transmit the obtained ambient temperature information to the temperature measuring host.

[0008] The temperature measuring host is communicatively connected to the 5G communication module. The temperature measuring host performs real-time temperature monitoring based on the ambient temperature information, and outputs alarm information to the 5G communication module according to the temperature monitoring result.

[0009] In some embodiments of the present application, based on the aforementioned solution, it further includes: a user end;

[0010] The user terminal is connected to the 5G communication module for communication to obtain the alarm information in the 5G communication module.

[0011] In some embodiments of the present application, based on the aforementioned solution, temperature measurement alarm software is installed on the temperature measurement host.

[0012] In some embodiments of the present application, based on the aforementioned solution, the internal material of the temperature measuring optical fiber is quartz glass, and the external armored outer sheath is Kevlar fiber.

[0013] In some embodiments of the present application, based on the aforementioned solution, the temperature measurement host is communicatively connected to the 5G communication module via an Ethernet port or an RS485 port.

[0014] According to a second aspect of an embodiment of the present application, a temperature measurement and monitoring method applied to the system as described in the first aspect is provided, comprising:

[0015] The temperature measuring host transmits a light pulse of a specific frequency to the temperature measuring optical fiber;

[0016] The temperature measuring optical fiber monitors the temperature of any point in the cable channel based on the optical pulse, and transmits the monitored ambient temperature information back to the temperature measuring host;

[0017] The temperature measuring host performs real-time monitoring based on the ambient temperature information and outputs alarm information according to the monitoring results.

[0018] In some embodiments of the present application, based on the above solution, the temperature measuring host performs real-time monitoring based on the ambient temperature information, and outputs alarm information according to the monitoring results, including:

[0019] Set the maximum temperature threshold, minimum temperature threshold, temperature rise rate threshold and temperature deviation threshold according to the cable operation needs;

[0020] The ambient temperature information is compared with the maximum temperature threshold, the minimum temperature threshold, the temperature rise rate threshold and the temperature deviation threshold, and an alarm message is output according to the judgment result.

[0021] The technical solution of the present application can detect the temperature information in the cable channel in real time through the temperature measuring host and the temperature measuring optical fiber. When the temperature is abnormal, a corresponding alarm message can be issued to prompt the staff, thereby realizing real-time monitoring of the ambient temperature of the cable channel.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0024] Figure 1 A schematic structural diagram of a temperature measurement and monitoring system for a power distribution cable channel according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0026] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0027] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0028] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiment 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.

[0030] Some embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0031] In order to solve the technical problems existing in the prior art, the embodiment of the present application provides a distribution cable channel temperature measurement and monitoring system, including: a temperature measurement host, a temperature measurement optical fiber and a 5G communication module;

[0032] The temperature measuring optical fiber is arranged in the cable channel and runs through the cable channel to obtain the ambient temperature information in the cable channel. The temperature measuring optical fiber is also connected to the temperature measuring host to transmit the obtained ambient temperature information to the temperature measuring host.

[0033] The temperature measuring host is communicatively connected to the 5G communication module. The temperature measuring host performs real-time temperature monitoring based on the ambient temperature information, and outputs alarm information to the 5G communication module according to the temperature monitoring result.

[0034] For example, see Figure 1 , showing a structural schematic diagram of a temperature measurement and monitoring system for distribution cable channels.

[0035] like Figure 1 As shown, a distribution cable channel temperature measurement and monitoring system is demonstrated, which includes: temperature measurement optical fiber, temperature measurement host, 5G communication module, cloud platform, etc.

[0036] Among them, the temperature measuring optical fiber is set in the cable channel, which can monitor the heat change of the channel environment in real time and issue an early warning. The factors of the heat change of the channel environment can be various fire sources such as open flames caused by overheating of the cable or external factors. One end of the temperature measuring optical fiber is connected to the temperature measuring host, and the temperature measuring host will obtain the ambient temperature information measured by the temperature measuring optical fiber in real time. When the ambient temperature information reaches the alarm threshold, it will output the corresponding alarm information to the cloud platform.

[0037] It should be noted that since the temperature measuring optical fiber passes through the entire cable channel, it effectively avoids the monitoring dead zone, so the overall operation status of the cable channel loop can be displayed on the temperature measuring host, and the temperature distribution curve in the channel and the temperature change curve of each point over time can be displayed in real time.

[0038] In some feasible embodiments, based on the above solution, it further includes: a user end;

[0039] The user terminal is connected to the cloud platform for communication to obtain the alarm information in the 5G communication module.

[0040] like Figure 1 As shown, the user terminal can be a PC or a mobile device. After the user logs in to the user terminal, he can receive the alarm information output by the temperature measurement host, which can ensure timely and effective feedback of the on-site conditions.

[0041] It should be noted that during the actual operation, when an alarm signal appears, the display can be switched to the alarm screen and the distribution map of the area where the fault signal is located, and the maximum temperature of the fault area or other relevant alarm indicators can be displayed.

[0042] In some feasible embodiments, based on the above-mentioned solution, temperature measurement alarm software is installed on the temperature measurement host.

[0043] It is understandable that a corresponding alarm program is provided in the temperature measurement alarm software, and the alarm program corresponds to the corresponding alarm logic. For example, an alarm is issued when the ambient temperature is higher or lower than a certain temperature value, or when the heating rate of the ambient temperature is greater than a certain value.

[0044] It should be noted that the maximum temperature, minimum temperature, temperature rise rate, temperature deviation, fiber breakage and other alarm functions can be set in the temperature measurement alarm software according to the cable operation needs; the relevant alarm thresholds can be set in the software according to the different on-site working environments to achieve customized alarm requirements.

[0045] In some feasible embodiments, based on the above-mentioned solution, the internal material of the temperature measuring optical fiber is quartz glass, and the external armored outer sheath is Kevlar fiber.

[0046] It can be understood that quartz glass has the characteristics of being non-corrosive, fire-resistant, water-resistant and having a long life, and is suitable as the internal material of the temperature measuring optical fiber in this embodiment.

[0047] In addition, the armored outer sheath and Kevlar fiber are used to improve the compression and tensile properties of the temperature measuring optical fiber, so that it can be used in various harsh environments without affecting its related performance. It can usually serve for up to 30 years. In addition, it also has the advantages of strong anti-electromagnetic interference ability, lightning protection, high sensitivity, and high measurement accuracy.

[0048] It should be noted that the temperature measurement principle of this embodiment is as follows:

[0049] In the actual temperature monitoring process, the temperature measuring host uses a light pulse of a specific frequency to illuminate the glass core in the optical fiber. When the light pulse moves down along the glass core of the optical fiber, Raman scattering will occur. Raman scattering is sensitive to temperature and can generate Stokes light and anti-Stokes light according to different mechanisms. The intensity of Stokes light is little affected by temperature and can be ignored, while the intensity of Anti-Stokes light changes with temperature. The ratio of the intensity of Anti-Stokes light to Stokes light provides a functional relationship with temperature. When light is transmitted in the optical fiber, a part of the Raman scattered light (backward Raman scattered light) returns along the original path of the optical fiber and is received by the temperature measuring host. The temperature measuring host monitors the external temperature change by measuring the change in the intensity ratio of Anti-Stokes light to Stokes light in the back Raman scattered light. Using optical time domain reflectometry (OTDR) technology, different temperature points can be located based on the transmission rate of light in the optical fiber and the time difference between the incident light and the back Raman scattered light. The temperature along the entire optical fiber can be obtained and accurately located.

[0050] It should be noted that since the interior of the temperature measuring optical fiber in this embodiment is made of quartz glass, according to the temperature measurement principle of the temperature measuring optical fiber, when the temperature measuring optical fiber is damaged, the temperature measuring host can locate the damaged point, and the optical fiber before the damaged point can still be in working condition.

[0051] It is understandable that, in actual application, the measurement area of ​​the temperature measuring optical fiber can be customized in length, and certain areas can be locally monitored, with the total number of monitoring areas being no less than 500.

[0052] It can be understood that this system uses optical time domain reflectometry (OTDR) for positioning, with a positioning accuracy of ≤1m. It can accurately locate each key area according to on-site needs.

[0053] In some feasible embodiments, based on the aforementioned solution, the temperature measurement host is communicatively connected to the 5G communication module via an Ethernet port or an RS485 port.

[0054] Based on the same inventive concept, an embodiment of the present application further provides a temperature measurement and monitoring method applied to a system as described in any of the above embodiments, comprising:

[0055] The temperature measuring host transmits a light pulse of a specific frequency to the temperature measuring optical fiber;

[0056] The temperature measuring optical fiber monitors the temperature of any point in the cable channel based on the optical pulse, and transmits the monitored ambient temperature information back to the temperature measuring host;

[0057] The temperature measuring host performs real-time monitoring based on the ambient temperature information and outputs alarm information according to the monitoring results.

[0058] In some feasible embodiments, based on the above solution, the temperature measuring host performs real-time monitoring based on the ambient temperature information, and outputs alarm information according to the monitoring results, including:

[0059] Set the maximum temperature threshold, minimum temperature threshold, temperature rise rate threshold and temperature deviation threshold according to the cable operation needs;

[0060] The ambient temperature information is compared with the maximum temperature threshold, the minimum temperature threshold, the temperature rise rate threshold and the temperature deviation threshold, and an alarm message is output according to the judgment result.

[0061] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. It should be understood that the present application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A temperature measurement and monitoring system for a power distribution cable channel, characterized in that: include: Temperature measurement host, temperature measurement optical fiber and 5G communication module; The temperature measuring optical fiber is arranged in the cable channel and runs through the cable channel to obtain the ambient temperature information in the cable channel. The temperature measuring optical fiber is also connected to the temperature measuring host to transmit the obtained ambient temperature information to the temperature measuring host. The temperature measuring host is communicatively connected to the 5G communication module. The temperature measuring host performs real-time temperature monitoring based on the ambient temperature information, and outputs alarm information to the 5G communication module according to the temperature monitoring result.

2. The system according to claim 1, characterized in that Also includes: User end; The user terminal is connected to the 5G communication module for communication to obtain the alarm information in the 5G communication module.

3. The system according to claim 1, characterized in that The temperature measurement host is installed with temperature measurement alarm software.

4. The system according to claim 1, characterized in that The temperature measuring optical fiber is made of quartz glass inside, armored outer sheath and Kevlar fiber outside.

5. The system according to claim 1, characterized in that The temperature measurement host is connected to the 5G communication module through an Ethernet port or an RS485 port.

6. A temperature measurement and monitoring method applied to the system as claimed in any one of claims 1 to 5, characterized in that: include: The temperature measuring host transmits a light pulse of a specific frequency to the temperature measuring optical fiber; The temperature measuring optical fiber monitors the temperature of any point in the cable channel based on the optical pulse, and transmits the monitored ambient temperature information back to the temperature measuring host; The temperature measuring host performs real-time monitoring based on the ambient temperature information and outputs alarm information according to the monitoring results.

7. The method according to claim 6, characterized in that The temperature measuring host performs real-time monitoring based on the ambient temperature information and outputs alarm information according to the monitoring results, including: Set the maximum temperature threshold, minimum temperature threshold, temperature rise rate threshold and temperature deviation threshold according to the cable operation needs; The ambient temperature information is compared with the maximum temperature threshold, the minimum temperature threshold, the temperature rise rate threshold and the temperature deviation threshold, and an alarm message is output according to the judgment result.

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