Mountain fire positioning control system and detection method thereof

Abstract

The invention provides a forest fire positioning control system and a detection method thereof. The forest fire positioning control system comprises a ground fault monitoring and positioning system, a forest fire monitoring platform and an unmanned aerial vehicle video acquisition and fire extinguishing system. The method has the beneficial effects that the fault line is quickly cut off by detecting the running state of the power grid in real time, analyzing and calculating the line grounding resistance value and the grounding site, and meanwhile, the unmanned aerial vehicle closest to the fault point in the unmanned aerial vehicle nest is awakened to perform video sampling, so that pure grounding or sparks and flames are analyzed, and the initial fire is extinguished. Leaf and trunk fire caused by power grid line faults is accurately positioned, and fire is extinguished at the initial stage. The fault location information and the video information are calculated and compared, and a result is sent to a worker for checking, so that the problems of low inspection efficiency and small inspection range in a traditional inspection mode are solved, the problem that fault points and ignition points of electric power lines are difficult to position is solved, timely onset and extinguishment of forest fires are facilitated, and the processing efficiency and first-aid repair efficiency of the forest fires are improved.

Description

Technical Field

[0001] The invention belongs to the field of wildfire positioning and control, and in particular relates to a wildfire positioning control system and a detection method thereof. Background Art

[0002] Once a wildfire occurs, it is difficult to control the fire if it is not dealt with immediately. Transmission lines usually cross forests, and fires caused by power line failures are common. Once a fire occurs, personnel cannot immediately find the fire location and know the burning situation of the forest, which brings many difficulties to the rescue workers. How to quickly locate the fault point and the fire situation is the key task of forest fire prevention. Summary of the invention

[0003] In view of this, the present invention aims to propose a wildfire positioning control system and a detection method thereof to solve at least one problem existing in the above-mentioned prior art, so as to facilitate power maintenance and firefighting personnel to quickly locate and judge the fire location and fire situation.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] In a first aspect, the present invention provides a wildfire positioning control system, including a ground fault monitoring and positioning system, a wildfire monitoring platform, and an unmanned aerial vehicle (UAV) video acquisition and fire extinguishing system; the ground fault monitoring and positioning system, the unmanned aerial vehicle (UAV) video acquisition and fire extinguishing system respectively exchange data with the wildfire monitoring platform through 5G wireless communication.

[0006] Furthermore, the ground fault monitoring and positioning system includes a high-precision voltage sampling circuit, a high-precision current sampling circuit, a high-precision ADC module and a core unit. The high-precision voltage sampling circuit and the high-precision current sampling circuit have their respective input ends connected to the positive and negative poles of the voltage and current sampling input terminals, and their output ends are communicatively connected to the input ends of the high-precision ADC module. The output end of the high-precision ADC module is bidirectionally communicatively connected to the core unit.

[0007] Furthermore, the drone video acquisition and fire extinguishing system includes a drone nest, a drone, a video monitor, and a fire extinguishing device. The drone nest uses solar power generation and wireless charging to charge the drone. The drone is mechanically connected to the video monitor, shares a power supply, and is equipped with a fire extinguishing device.

[0008] Furthermore, the wildfire monitoring platform includes a server, a monitoring screen, a processor, and a memory. The server is used to process real-time data from the ground fault monitoring and positioning system and the drone video acquisition and fire extinguishing system to determine whether there is a fire alarm or to send people to eliminate the power line ground fault.

[0009] Furthermore, the high-precision voltage sampling circuit includes an isolation voltage transformer, a filter capacitor, a filter inductor, a transient suppression tube and a sampling resistor. One end of the isolation voltage transformer is connected to the positive and negative electrodes of the high-precision sampling input terminal, and the other end is respectively connected to the filter capacitor, the transient suppression tube and the filter inductor. One end of the filter inductor is respectively connected to the transient suppression tube, the filter capacitor and the isolation voltage transformer, and the other end is connected to the sampling resistor.

[0010] Furthermore, the high-precision current sampling circuit includes an isolation current transformer, a filter capacitor, a filter inductor, a transient suppression tube and a sampling resistor. One end of the isolation current transformer is connected to the positive and negative electrodes of the high-precision sampling input terminal, and the other end is respectively connected to the filter capacitor, the transient suppression tube and the filter inductor. One end of the filter inductor is respectively connected to the transient suppression tube, the filter capacitor and the isolation current transformer, and the other end is connected to the sampling resistor.

[0011] In a second aspect, based on the same concept, the present invention also provides a detection method for a mountain fire positioning control system, comprising the following steps:

[0012] S1, determine whether to enter the detection program, if yes, go to step S2, otherwise go to step S6;

[0013] S2, the core unit will be connected to the high-precision ADC module through the serial port;

[0014] S3, read each voltage value;

[0015] S4, read each current value;

[0016] S5, master control data calculation;

[0017] S6: After the main control calculation is completed, if there is no ground fault, return to step S1; if there is a ground fault, go to step S7;

[0018] S7. Take off the nearest drone, enable video surveillance, and arrive at the landing point;

[0019] S8: If there is smoke or open flame, fire extinguishing is initiated and an alarm command is generated and transmitted back to the wildfire monitoring platform;

[0020] S9: There is no open flame or smoke. The grounding processing instruction is started and transmitted back to the wildfire monitoring platform, and the process returns to step S1.

[0021] Compared with the prior art, the wildfire location control system and detection method described in the present invention have the following advantages:

[0022] The mountain fire positioning control system and detection method described in the present invention can detect the power grid operation status in real time, analyze and calculate the line grounding resistance value and the grounding location, quickly cut off the faulty line, and wake up the drone in the drone nest closest to the fault point to take video samples, analyze whether it is simply grounded or there are sparks and flames, and extinguish the initial fire. It can accurately locate the leaves and trunks that are on fire due to power grid line faults, and extinguish the fire in the early stage. The fault location information and video information are calculated and compared, and the results are sent to the staff for viewing, avoiding the problems of low inspection efficiency and small inspection range in traditional inspection methods, adapting to the problem that the fault point and the fire point of the power line are difficult to locate, facilitating the timely occurrence and extinguishing of forest fires, and improving the efficiency of forest fire handling and emergency repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a block diagram of a wildfire positioning and control system according to an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a ground fault monitoring and positioning system according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the drone video acquisition and fire extinguishing system;

[0027] Figure 4 This is a schematic diagram of a high-precision voltage sampling circuit according to an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of a high-precision current sampling circuit according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of a high-precision ADC module according to an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of a core unit according to an embodiment of the present invention;

[0031] Figure 8 It is a logical schematic diagram of the detection method described in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0036] like Figures 1 to 8 As shown, a wildfire positioning control system includes a ground fault monitoring and positioning system, a wildfire monitoring platform, and a UAV video acquisition and fire extinguishing system.

[0037] The ground fault monitoring and positioning system, drone video acquisition and fire extinguishing system respectively exchange data with the wildfire monitoring platform through 5G wireless communication.

[0038] In a preferred embodiment of the present invention, the ground fault monitoring and positioning system includes a high-precision voltage sampling circuit, a high-precision current sampling circuit, a high-precision ADC module and a core unit, wherein the high-precision voltage sampling circuit and the high-precision current sampling circuit have their respective input ends connected to the positive and negative poles of the voltage and current sampling input terminals, and their output ends are communicatively connected to the input ends of the high-precision ADC module, and the output ends of the high-precision ADC module are bidirectionally communicatively connected to the core unit.

[0039] In a preferred embodiment of the present invention, the drone video acquisition and fire extinguishing system includes a drone nest, a drone, a video monitor, and a fire extinguishing device. The drone nest uses solar power generation and wireless charging to charge the drone. The drone is mechanically connected to the video monitor, shares a power supply, and is equipped with a fire extinguishing device.

[0040] In a preferred embodiment of the present invention, the wildfire monitoring platform includes a server, a monitoring screen, a processor, and a memory. The server is used to process real-time data from the ground fault monitoring and positioning system and the drone video acquisition and fire extinguishing system to determine whether there is a fire alarm or to send people to eliminate the power line grounding fault.

[0041] In a preferred embodiment of the present invention, the high-precision voltage sampling circuit includes an isolation voltage transformer, a filter capacitor, a filter inductor, a transient suppression tube and a sampling resistor. One end of the isolation voltage transformer is connected to the positive and negative electrodes of the high-precision sampling input terminal, and the other end is respectively connected to the filter capacitor, the transient suppression tube and the filter inductor. One end of the filter inductor is respectively connected to the transient suppression tube, the filter capacitor and the isolation voltage transformer, and the other end is connected to the sampling resistor.

[0042] In a preferred embodiment of the present invention, the high-precision current sampling circuit includes an isolation current transformer, a filter capacitor, a filter inductor, a transient suppression tube and a sampling resistor. One end of the isolation current transformer is connected to the positive and negative electrodes of the high-precision sampling input terminal, and the other end is respectively connected to the filter capacitor, the transient suppression tube and the filter inductor. One end of the filter inductor is respectively connected to the transient suppression tube, the filter capacitor and the isolation current transformer, and the other end is connected to the sampling resistor.

[0043] The present invention realizes long-distance and full-range fire positioning and control and can be widely used in forest fire fault point rapid positioning and fire control occasions.

[0044] The present invention detects the operation status of the power grid in real time, analyzes and calculates the grounding resistance value and grounding location of the line, quickly cuts off the faulty line, and wakes up the drone in the drone nest closest to the fault point to take video samples, analyzes whether it is simply grounded or has sparks or flames, and extinguishes the initial fire. It can accurately locate the leaves and trunks that are on fire due to power grid line faults, and extinguish the fire in the early stage. The fault location information and video information are calculated and compared, and the results are sent to the staff for viewing, avoiding the problems of low inspection efficiency and small inspection range in traditional inspection methods, adapting to the problem that the fault point and fire point of the power line are difficult to locate, facilitating the timely occurrence and extinguishing of forest fires, and improving the efficiency of handling and repairing forest fires.

[0045] In a preferred embodiment of the present invention, when performing fault location, the voltage and current reach the high-precision voltage and current sampling circuit through the positive and negative poles of the respective voltage and current sampling input terminals, and then reach the high-precision ADC module. The high-precision ADC module converts the analog signal into a digital signal and transmits it to the core unit to complete the ground voltage and current calculation and fault point location.

[0046] In a preferred embodiment of the present invention, the high-precision voltage sampling circuit includes an isolation voltage transformer, a filter capacitor, a filter inductor, a transient suppression tube and a sampling resistor. One end of the isolation voltage transformer is connected to the positive and negative electrodes of the high-precision sampling input terminal, and the other end is respectively connected to the filter capacitor, the transient suppression tube and the filter inductor. One end of the filter inductor is respectively connected to the transient suppression tube, the filter capacitor and the isolation voltage transformer, and the other end is connected to the sampling resistor.

[0047] In a preferred embodiment of the present invention, the ground fault monitoring and positioning system is characterized in that: the high-precision current sampling circuit includes an isolation current transformer, a filter capacitor, a filter inductor, a transient suppression tube and a sampling resistor. One end of the isolation current transformer is connected to the positive and negative poles of the high-precision sampling input terminal, and the other end is respectively connected to the filter capacitor, the transient suppression tube and the filter inductor. One end of the filter inductor is respectively connected to the transient suppression tube, the filter capacitor and the isolation current transformer, and the other end is connected to the sampling resistor. The above-mentioned finally realizes the calculation of ground zero-sequence voltage and zero-sequence current and the location of the fault point.

[0048] In a preferred embodiment of the present invention, the high-precision ADC module is a 16-bit high-precision analog-to-digital conversion chip, which realizes high-precision conversion between analog signals and digital signals.

[0049] In a preferred embodiment of the present invention, the core unit is composed of an STM32H743 series microprocessor and peripheral circuits, and is connected to a high-precision ADC module via a serial port to read the collected data.

[0050] In a preferred embodiment of the present invention, the present invention also provides a detection method for a mountain fire location control system, comprising the following steps:

[0051] S1, determine whether to enter the detection program, if yes, go to step S2, otherwise go to step S6;

[0052] S2, the core unit will be connected to the high-precision ADC module through the serial port;

[0053] S3, read each voltage value;

[0054] S4, read each current value;

[0055] S5, master control data calculation;

[0056] S6: After the main control calculation is completed, if there is no ground fault, return to step S1; if there is a ground fault, go to step S7;

[0057] S7. Take off the nearest drone, enable video surveillance, and arrive at the landing point;

[0058] S8: If there is smoke or open flame, fire extinguishing is initiated and an alarm command is generated and transmitted back to the wildfire monitoring platform;

[0059] S9: There is no open flame or smoke. The grounding processing instruction is started and transmitted back to the wildfire monitoring platform, and the process returns to step S1.

[0060] In this embodiment, the wildfire positioning and control system has the following steps, and the logic block diagram is as follows: Figure 8 :

[0061] When performing zero-sequence voltage and zero-sequence current detection, each measured voltage and current is connected to the positive and negative poles of the high-precision sampling input terminals of the ground fault monitoring and positioning system respectively, and the signal passes through the isolation voltage transformer, isolation current transformer, filter capacitor, transient suppression tube and filter inductor to the sampling resistor.

[0062] The signal at the end of the sampling resistor is converted into digital form by a high-precision ADC module and connected to the core unit through a serial port. The core unit STM32H743 microprocessor monitors the zero-sequence voltage and zero-sequence current in real time. When the zero-sequence current mutation (during the fault - before the fault) is greater than the set threshold, it is determined whether the zero-sequence voltage exceeds the limit. If both conditions are met, the next step is performed: find the fault start; then, find the mutation point of the zero-sequence current according to the actual sampling point, that is, the actual starting point of the fault; that is: use the startup algorithm combined with zero-voltage threshold startup + zero-current mutation startup to determine the first half-wave data and obtain the fault starting point.

[0063] After determining the first half-wave data, the product of the zero-sequence voltage and the zero-sequence current is calculated. If the product is negative, it is determined to be an internal fault; if it is positive, it is determined to be an external fault, and finally the conditions for determining the grounding fault point are met.

[0064] If there is a ground fault, the mountain fire monitoring platform sends the fault location information and take-off signal to the drone. The drone arrives at the fault point and starts video monitoring. If there is smoke or open flame, the fire extinguishing is started and an alarm command is generated and sent back to the mountain fire monitoring platform. If there is no smoke or open flame, the mountain fire monitoring platform determines whether there is still ground fault information. If not, the drone returns to the nest.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mountain fire location control system, characterized in that: It includes a ground fault monitoring and positioning system, a wildfire monitoring platform, and a drone video acquisition and fire extinguishing system; the ground fault monitoring and positioning system, the drone video acquisition and fire extinguishing system respectively exchange data with the wildfire monitoring platform through 5G wireless communication.

2. A mountain fire location control system according to claim 1, characterized in that: The ground fault monitoring and positioning system includes a high-precision voltage sampling circuit, a high-precision current sampling circuit, a high-precision ADC module and a core unit. The high-precision voltage sampling circuit and the high-precision current sampling circuit have their respective input ends connected to the positive and negative poles of the voltage and current sampling input terminals, and their output ends are communicatively connected to the input ends of the high-precision ADC module. The output end of the high-precision ADC module is bidirectionally communicatively connected to the core unit.

3. A mountain fire location control system according to claim 1, characterized in that: The drone video acquisition and fire extinguishing system includes a drone nest, a drone, a video monitor, and a fire extinguishing device. The drone nest uses solar power generation and wireless charging to charge the drone. The drone is mechanically connected to the video monitor to share power and is equipped with a fire extinguishing device.

4. A mountain fire location control system according to claim 1, characterized in that: The mountain fire monitoring platform includes a server, a monitoring screen, a processor, and a memory. The server is used to process real-time data from the ground fault monitoring and positioning system and the drone video acquisition and fire extinguishing system to determine whether there is a fire alarm or to send people to eliminate the power line ground fault.

5. A mountain fire location control system according to claim 2, characterized in that: The high-precision voltage sampling circuit includes an isolation voltage transformer, a filter capacitor, a filter inductor, a transient suppression tube and a sampling resistor; one end of the isolation voltage transformer is connected to the positive and negative poles of the high-precision sampling input terminal, and the other end is respectively connected to the filter capacitor, the transient suppression tube and the filter inductor; one end of the filter inductor is respectively connected to the transient suppression tube, the filter capacitor and the isolation voltage transformer, and the other end is connected to the sampling resistor.

6. A mountain fire location control system according to claim 2, characterized in that: The high-precision current sampling circuit includes an isolation current transformer, a filter capacitor, a filter inductor, a transient suppression tube and a sampling resistor; one end of the isolation current transformer is connected to the positive and negative poles of the high-precision sampling input terminal, and the other end is respectively connected to the filter capacitor, the transient suppression tube and the filter inductor; one end of the filter inductor is respectively connected to the transient suppression tube, the filter capacitor and the isolation current transformer, and the other end is connected to the sampling resistor.

7. A detection method for a mountain fire location control system, using a mountain fire location control system according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, determine whether to enter the detection program, if yes, go to step S2, otherwise go to step S6; S2, the core unit will be connected to the high-precision ADC module through the serial port; S3, read each voltage value; S4, read each current value; S5, master control data calculation; S6: After the main control calculation is completed, if there is no ground fault, return to step S1; if there is a ground fault, go to step S7; S7. Take off the nearest drone, enable video surveillance, and arrive at the landing point; S8: If there is smoke or open flame, fire extinguishing is initiated and an alarm command is generated and transmitted back to the wildfire monitoring platform; S9: There is no open flame or smoke. The grounding processing instruction is started and transmitted back to the wildfire monitoring platform, and the process returns to step S1.

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