Strip mine area temperature real-time monitoring system and method based on distributed optical fiber sensing

Abstract

The invention discloses a strip mine area temperature real-time monitoring system and method based on distributed optical fiber sensing, and relates to the technical field of strip mine area temperature monitoring, and the system comprises a distributed optical fiber collection module which is used for carrying out the dense temperature collection of a strip mine area, and obtaining the temperature data; the data processing module is used for processing the temperature data to obtain a temperature processing result; the anomaly detection identification and early warning module is used for carrying out anomaly identification on the temperature processing result to obtain an anomaly judgment result; wherein the abnormity judgment result comprises short-time point temperature abnormity, short-time area temperature abnormity, long-time point temperature abnormity, long-time area temperature abnormity and normality; and early warning is carried out when the abnormity judgment result is short-time point temperature abnormity, short-time area temperature abnormity, long-time point temperature abnormity or long-time area temperature abnormity. According to the invention, accurate measurement, monitoring and real-time early warning of the ground temperature change of the whole strip mine area are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of open-pit mine area temperature monitoring, and in particular to an open-pit mine area temperature real-time monitoring system and method based on distributed optical fiber sensing. BACKGROUND

[0002] Dynamic changes in temperature can have a significant impact on safety production and personnel protection in open-pit mine areas. Accurate and timely temperature monitoring of the entire open-pit mine area is a key technical requirement for ensuring safe operation of the mine area.

[0003] Current technical means for open-pit mine area temperature monitoring include ground sensor monitoring, remote sensing monitoring, and numerical simulation. Among them, ground sensor monitoring mainly uses weather stations, wireless sensor networks (WSN), infrared thermometers, and other equipment to collect mine area temperature data, which can directly measure air or surface temperature, but has limited coverage, high maintenance costs, and different ground sensor data formats from different manufacturers, making integration difficult. Remote sensing monitoring mainly uses satellite remote sensing, unmanned aerial vehicle thermal infrared, and thermal infrared cameras to monitor the surface temperature of the entire mine area. Unmanned aerial vehicles can finely scan key areas, but have low time resolution, long satellite revisit periods, and difficulty in real-time monitoring. Thermal infrared data is easily affected by weather such as clouds and haze and requires additional correction. Numerical simulation has high computational costs, requires high input data, and relies on accurate surface parameters, making it difficult to apply in real time. SUMMARY

[0004] To solve the technical problems in the background art, the present application proposes an open-pit mine area temperature real-time monitoring system and method based on distributed optical fiber sensing.

[0005] The present application proposes an open-pit mine area temperature real-time monitoring system based on distributed optical fiber sensing, comprising:

[0006] A distributed optical fiber acquisition module for intensive temperature acquisition in the open-pit mine area to obtain temperature data.

[0007] A data processing module for processing temperature data to obtain temperature processing results.

[0008] An anomaly detection and identification and early warning module for anomaly identification of temperature processing results to obtain anomaly determination results. The anomaly determination results include short-term point temperature anomaly, short-term regional temperature anomaly, long-term point temperature anomaly, long-term regional temperature anomaly, and normal.

[0009] And when the anomaly determination result is a short-term point temperature anomaly, a short-term regional temperature anomaly, a long-term point temperature anomaly, or a long-term regional temperature anomaly, an early warning is performed.

[0010] Preferably, the temperature threshold and the abnormal time threshold are preset in the abnormality detection identification and early warning module;

[0011] When the temperature at a certain position exceeds the temperature threshold and the duration is less than or equal to the time threshold, the short-time point temperature abnormality is determined;

[0012] When the temperature at a certain position exceeds the temperature threshold and the duration is greater than the time threshold, the long-time point temperature abnormality is determined;

[0013] When the short-time point temperature abnormality exists at adjacent multiple positions, the short-time regional temperature abnormality is determined to exist;

[0014] When the long-time point temperature abnormality exists at adjacent multiple positions, the long-time regional temperature abnormality is determined to exist.

[0015] Preferably, the temperature processing result includes one or more of the real-time temperature of the optical fiber along the line, the temperature change broken line graph in time, the waterfall graph, the average temperature broken line graph and the average temperature orthographic map.

[0016] Preferably, the method further comprises:

[0017] The data storage module is used for storing the temperature data or the temperature data and the temperature processing result.

[0018] Preferably, the method further comprises:

[0019] The display module is used for displaying one or more of the temperature data, the temperature processing result and the abnormality determination result.

[0020] In a second aspect, the present application further provides an open-pit mine area temperature real-time monitoring method based on distributed optical fiber sensing, comprising:

[0021] Intensive temperature collection is performed on the open-pit mine area to obtain temperature data;

[0022] The temperature data is processed to obtain a temperature processing result;

[0023] The temperature processing result is subjected to abnormality identification to obtain an abnormality determination result; wherein the abnormality determination result includes short-time point temperature abnormality, short-time regional temperature abnormality, long-time point temperature abnormality, long-time regional temperature abnormality and normality;

[0024] When the abnormality determination result is short-time point temperature abnormality, short-time regional temperature abnormality, long-time point temperature abnormality or long-time regional temperature abnormality, early warning is performed.

[0025] Preferably, in the abnormality identification process, when the temperature at a certain position exceeds the temperature threshold and the duration is less than or equal to the time threshold, the short-time point temperature abnormality is determined;

[0026] When the temperature at a position exceeds the temperature threshold and the duration is greater than the time threshold, the long-time point temperature anomaly is determined;

[0027] When the short-time point temperature anomaly exists at adjacent positions, the short-time area temperature anomaly is determined to exist;

[0028] When the long-time point temperature anomaly exists at adjacent positions, the long-time area temperature anomaly is determined to exist.

[0029] Preferably, the temperature processing result includes one or more of the real-time temperature of the optical fiber at each position along the line, the temperature change broken line graph over time, the waterfall graph, the average temperature broken line graph, and the average temperature orthographic map.

[0030] Preferably, after obtaining the temperature data or the temperature data and the temperature processing result, the method further comprises:

[0031] Storing the temperature data or the temperature data and the temperature processing result.

[0032] In the embodiment, after obtaining the anomaly determination result, the method further comprises:

[0033] Displaying one or more of the temperature data, the temperature processing result, and the anomaly determination result.

[0034] In the present application, the open-pit mine area temperature real-time monitoring system and method based on distributed optical fiber sensing are proposed. The four-way communication optical cable in the open-pit mine area is converted into a high-density temperature sensor by using a distributed optical fiber acquisition module. The ground temperature of the monitored area, such as the real-time temperature change of the measured area and the long-time temperature curve, is calculated by a preset processing algorithm in the data processing module. Thus, the temperature processing result is subjected to anomaly recognition, the anomaly determination result is obtained, and a warning is given when the anomaly determination result is a short-time point temperature anomaly, a short-time area temperature anomaly, a long-time point temperature anomaly, or a long-time area temperature anomaly. The present application realizes accurate measurement, monitoring, and real-time warning of the ground temperature change in the whole open-pit mine area, and provides strong technical support and data basis for the safe production and potential risk avoidance of the mine area. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 The flowchart of the open-pit mine area temperature real-time monitoring method based on distributed optical fiber sensing in the embodiment of the present application is shown. DETAILED DESCRIPTION

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] In a first aspect, the present application provides an open-pit mine temperature real-time monitoring system based on distributed optical fiber sensing, comprising:

[0038] A distributed optical fiber acquisition module is configured to densely collect temperature data of the open-pit mine.

[0039] A data processing module is configured to process the temperature data to obtain a temperature processing result.

[0040] An abnormality detection and identification and early warning module is configured to identify abnormalities in the temperature processing result to obtain an abnormality determination result, wherein the abnormality determination result includes short-time point temperature abnormality, short-time area temperature abnormality, long-term point temperature abnormality, long-term area temperature abnormality, and normality.

[0041] When the abnormality determination result is short-time point temperature abnormality, short-time area temperature abnormality, long-term point temperature abnormality, or long-term area temperature abnormality, an early warning is performed.

[0042] Compared with the currently commonly used temperature monitoring techniques for open-pit mines, such as ground sensor monitoring and remote sensing monitoring, the present application converts the four-way communication optical cables in the open-pit mine into high-density temperature sensors by using the distributed optical fiber acquisition module, each sensor can independently monitor the temperature, and each data acquisition point position is fixed, so that the abnormal position can be directly found where the abnormality occurs, which can effectively make up for the shortcomings of traditional technology in space monitoring. The ground temperature of the monitored area, such as the real-time temperature change of the measured area and the long-time temperature curve, is calculated by the preset processing algorithm in the data processing module, so as to identify abnormalities in the temperature processing result, obtain an abnormality determination result, and perform an early warning when the abnormality determination result is short-time point temperature abnormality, short-time area temperature abnormality, long-term point temperature abnormality, or long-term area temperature abnormality. The present application realizes accurate measurement, monitoring, and real-time early warning of the ground temperature change of the open-pit mine, and provides strong technical support and data basis for the safety production and potential risk avoidance of the mine.

[0043] In the present embodiment, the distributed optical fiber acquisition module can convert the optical cables into dense temperature acquisition units by erecting optical cables or accessing existing communication optical cables in the area of the mine where temperature change needs to be monitored, the maximum bottom surface density can reach meters, and the temperature precision can reach 0.1℃.

[0044] Of course, the distributed optical fiber acquisition module in the present embodiment can also lay temporary optical cables in key areas to improve the accuracy of temperature monitoring.

[0045] The temperature processing result in the present embodiment includes one or more of the real-time temperature of the optical fiber along the line, the change broken line graph of the temperature over time, the waterfall chart, the average temperature broken line graph, and the average temperature orthographic map.

[0046] In the embodiment, further comprising:

[0047] A data storage module is configured to store the temperature data or the temperature data and the temperature processing result, so as to facilitate later statistical, display and retrieval processing.

[0048] In the embodiment, further comprising:

[0049] A display module is configured to display one or more of the temperature data, the temperature processing result and the abnormality determination result.

[0050] In order to accurately obtain the abnormality determination result, in the embodiment, the temperature threshold and the abnormal time threshold are preset in the abnormality detection and identification and early warning module;

[0051] When the temperature at a certain position exceeds the temperature threshold and the duration is less than or equal to the time threshold, the short-time point temperature abnormality is determined;

[0052] When the temperature at a certain position exceeds the temperature threshold and the duration is greater than the time threshold, the long-time point temperature abnormality is determined;

[0053] When the short-time point temperature abnormality exists at adjacent multiple positions, the short-time regional temperature abnormality is determined to exist;

[0054] When the long-time point temperature abnormality exists at adjacent multiple positions, the long-term regional temperature abnormality is determined to exist.

[0055] In a second aspect, as Figure 1 shown, the present application further provides an open-pit mine area temperature real-time monitoring method based on distributed optical fiber sensing, comprising:

[0056] Intensive temperature collection is performed on the open-pit mine area to obtain temperature data;

[0057] The temperature data is processed to obtain a temperature processing result;

[0058] The temperature processing result is subjected to abnormality identification to obtain an abnormality determination result; wherein the abnormality determination result includes short-time point temperature abnormality, short-time regional temperature abnormality, long-term point temperature abnormality, long-term regional temperature abnormality and normality;

[0059] When the abnormality determination result is short-time point temperature abnormality, short-time regional temperature abnormality, long-term point temperature abnormality or long-term regional temperature abnormality, early warning is performed.

[0060] In the embodiment, in the abnormality identification process, when the temperature at a certain position exceeds the temperature threshold and the duration is less than or equal to the time threshold, the short-time point temperature abnormality is determined;

[0061] When the temperature at a certain position exceeds the temperature threshold and the duration is greater than the time threshold, the long-time point temperature abnormality is determined;

[0062] When the short-time point temperature anomaly exists in the adjacent multiple positions, it is determined that the short-time regional temperature anomaly exists;

[0063] When the long-time point temperature anomaly exists in the adjacent multiple positions, it is determined that the long-time regional temperature anomaly exists.

[0064] In the embodiment, the temperature processing result includes one or more of the real-time temperature of the optical fiber at each position along the line, the change broken line graph of the temperature over time, the waterfall chart, the average temperature broken line graph, and the average temperature orthographic map.

[0065] In the embodiment, after obtaining the temperature data or the temperature data and the temperature processing result, the method further includes:

[0066] Storing the temperature data or the temperature data and the temperature processing result.

[0067] In the embodiment, after obtaining the abnormality determination result, the method further includes:

[0068] Displaying one or more of the temperature data, the temperature processing result, and the abnormality determination result.

[0069] The above merely provides the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical solution and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, should be covered within the protection scope of the present application.

Claims

1. A distributed optical fiber sensing based real-time temperature monitoring system for open pit mine area, characterized in that, The method comprises: collecting temperature data of the open-pit mine area by using a distributed optical fiber collection module; processing the temperature data to obtain temperature processing results; identifying abnormalities in the temperature processing results to obtain abnormality determination results, wherein the abnormality determination results include short-time point temperature abnormality, short-time area temperature abnormality, long-term point temperature abnormality, long-term area temperature abnormality, and normality; and when the abnormality determination results are short-time point temperature abnormality, short-time area temperature abnormality, long-term point temperature abnormality, or long-term area temperature abnormality, an alarm is given.

2. The distributed optical fiber sensing based real-time temperature monitoring system for open-pit mine area according to claim 1, characterized in that, The abnormality detection and identification and alarm module is preconfigured with a temperature threshold and an abnormality time threshold, when the temperature at a certain position exceeds the temperature threshold and the duration is less than or equal to the time threshold, the short-time point temperature abnormality is determined; when the temperature at a certain position exceeds the temperature threshold and the duration is greater than the time threshold, the long-time point temperature abnormality is determined; when a plurality of adjacent positions are short-time point temperature abnormality, the short-time area temperature abnormality is determined to exist; when a plurality of adjacent positions are long-time point temperature abnormality, the long-term area temperature abnormality is determined to exist.

3. The distributed optical fiber sensing based real-time temperature monitoring system for open-pit mine area according to claim 1, characterized in that, The temperature processing results include one or more of the real-time temperature at each position along the optical fiber, the temperature change line graph over time, the waterfall graph, the average temperature line graph, and the average temperature orthographic map.

4. The distributed optical fiber sensing based real-time temperature monitoring system for open-pit mine area according to claim 1, characterized in that, The method further comprises: a data storage module for storing the temperature data or the temperature data and the temperature processing results.

5. The distributed optical fiber sensing based real-time temperature monitoring system for open-pit mine area according to claim 1, characterized in that, The method further comprises: a display module for displaying one or more of the temperature data, the temperature processing results, and the abnormality determination results.

6. A real-time temperature monitoring method for open-pit mine area based on distributed optical fiber sensing, characterized in that, The method comprises: collecting temperature data of the open-pit mine area by using a distributed optical fiber collection module; processing the temperature data to obtain temperature processing results; identifying abnormalities in the temperature processing results to obtain abnormality determination results, wherein the abnormality determination results include short-time point temperature abnormality, short-time area temperature abnormality, long-term point temperature abnormality, long-term area temperature abnormality, and normality; and when the abnormality determination results are short-time point temperature abnormality, short-time area temperature abnormality, long-term point temperature abnormality, or long-term area temperature abnormality, an alarm is given.

7. The distributed optical fiber sensing based real-time temperature monitoring method of an open-pit mine area according to claim 6, characterized in that, In the abnormality identification process, when the temperature at a certain position exceeds the temperature threshold and the duration is less than or equal to the time threshold, the short-time point temperature abnormality is determined; when the temperature at a certain position exceeds the temperature threshold and the duration is greater than the time threshold, the long-time point temperature abnormality is determined; when a plurality of adjacent positions are short-time point temperature abnormality, the short-time area temperature abnormality is determined to exist; when a plurality of adjacent positions are long-time point temperature abnormality, the long-term area temperature abnormality is determined to exist.

8. The distributed optical fiber sensing based real-time temperature monitoring method of an open-pit mine area according to claim 6, characterized in that, The temperature processing results include one or more of the real-time temperature at each position along the optical fiber, the temperature change line graph over time, the waterfall graph, the average temperature line graph, and the average temperature orthographic map.

9. The distributed optical fiber sensing based real-time temperature monitoring method of an open-pit mine area according to claim 6, characterized in that, After obtaining the temperature data or the temperature data and the temperature processing results, the method further comprises: storing the temperature data or the temperature data and the temperature processing results.

10. The distributed optical fiber sensing based real-time temperature monitoring method of open-pit mine area according to claim 6, characterized in that, After obtaining the abnormality determination results, the method further comprises: displaying one or more of the temperature data, the temperature processing results, and the abnormality determination results.

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