CN115273404A - Mountain torrent early warning monitoring method, system, terminal and storage medium - Google Patents
Mountain torrent early warning monitoring method, system, terminal and storage medium Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000001514 detection method Methods 0.000 claims description 18
- 238000005303 weighing Methods 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 6
- 238000006424 Flood reaction Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 description 9
- 238000005070 sampling Methods 0.000 description 5
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Abstract
The invention discloses a mountain torrent early warning monitoring method, a system, a terminal and a storage medium, wherein the mountain torrent early warning monitoring method comprises the following steps: acquiring rainfall data and water level data of the environment; determining an early warning level according to the rainfall data and the water level data; obtaining topographic data of the environment; adjusting the early warning level according to the terrain data; and determining the authority level of the user according to the user information, and generating an early warning signal according to the authority level and the early warning level. According to the technical scheme, the accuracy of the early warning data can be guaranteed, and the early warning efficiency is improved.
Description
Technical Field
The invention relates to the technical field of mountain torrent early warning, in particular to a mountain torrent early warning monitoring method, a mountain torrent early warning monitoring system, a mountain torrent early warning monitoring terminal and a storage medium.
Background
Due to the special geographical position of China, the complex and various geological features in China are determined, and precipitation distribution is uneven. The characteristics of the southern and southwest areas are particularly remarkable, and various natural disasters caused by mountain floods can happen every flood season, so that immeasurable loss is brought to the property of the masses of people, and the good life of the common people is seriously influenced. The prediction and early warning of the mountain torrents is a popular subject discussed in the field, and how to start the mountain torrent early warning at a proper moment and track the development state of the flood in real time is a problem to be solved urgently.
However, most of the existing mountain torrent early warning and monitoring systems need to be deployed with large consumption of manpower, and the equipment consumption is relatively large; the manpower early warning mode needs to consume a large amount of manpower resources, and the early warning effect is low because a key area often lacks manpower.
Disclosure of Invention
The invention mainly aims to provide a mountain torrent early warning and monitoring method, aiming at guaranteeing the accuracy of early warning data and improving the early warning efficiency.
The above problems to be solved by the present invention are achieved by the following technical solutions:
a mountain torrent early warning and monitoring method comprises the following steps:
acquiring rainfall data and water level data of the environment;
determining an early warning level according to the rainfall data and the water level data;
obtaining topographic data of the environment;
adjusting the early warning level according to the terrain data;
and determining the authority level of the user according to the user information, and generating an early warning signal according to the authority level and the early warning level.
Preferably, in the step of acquiring rainfall data and water level data of the environment, the method includes:
detecting the water volume weight formed by precipitation or snowfall in the environment, and acquiring rainfall data of the environment according to the water volume weight; and obtaining a rate of change in weight of the amount of water.
Preferably, the step of obtaining the data rate of the change of the water amount weight includes the following steps:
when the change data of the water volume and the weight is larger than a preset change value, outputting a measured value of the water volume and the weight within a first preset time; and outputting the measurement value a first preset number of times.
Preferably, the step of obtaining the data rate of change of the water amount weight further includes the steps of:
when the change data of the water volume and the weight is smaller than the preset change data, judging whether the total measured value of the water volume and the weight exceeds a first preset weight value within a second preset time period;
if the total measured value of the water volume and the weight exceeds the first preset weight value within the second preset time, outputting the total measured value of the water volume and the weight at the moment to the control module;
and discharging the water stored in the weighing detection part if the total measured value of the weight of the water amount does not exceed the first preset weight value within the second preset time period.
Preferably, the step of acquiring the topographic data of the environment includes the following steps:
and acquiring video data or image data of the environment in real time through a view acquisition component, and acquiring region data of the environment according to the video data or the image data.
Preferably, in the step of adjusting the early warning level according to the terrain data, the method includes:
comparing the region data of the real-time monitoring environment with the initially stored region data;
if the real-time environment difference data obtained by the comparison is larger than first preset environment difference data, the first early warning level is increased and adjusted to be the second early warning level;
and if the real-time environment difference data obtained by the comparison is smaller than or equal to first preset environment difference data, adjusting the first early warning level to be lower than the second early warning level.
Preferably, determining the authority level of the user according to the user information, and generating the early warning signal according to the authority level and the early warning level includes:
determining whether the authority level of the user accords with a first level or a second level according to the user information;
if the authority level of the user accords with the first level authority, generating a broadcast type early warning signal according to the first level authority and the early warning level;
and if the authority level of the user accords with the second level authority, generating a broadcast type early warning signal and an instruction type early warning signal according to the second level authority and the early warning grade.
Preferably, a mountain torrent early warning monitoring system comprises;
the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring rainfall data and water level data of an environment and acquiring topographic data of the environment;
and the control module is used for determining an early warning grade according to the rainfall data and the water level data, adjusting the early warning grade according to the terrain data, determining the authority grade of the user according to the user information, and generating an early warning signal according to the authority grade and the early warning grade.
Preferably, a mountain torrent early warning monitor terminal, mountain torrent early warning monitor terminal includes: the system comprises a memory, a processor and a torrential flood warning and monitoring program stored on the memory and capable of running on the processor, wherein the torrential flood warning and monitoring program when executed by the processor realizes the steps of the torrential flood warning and monitoring method.
Preferably, a storage medium for mountain torrent early warning and monitoring is provided, and a mountain torrent early warning and monitoring program is stored on the computer readable storage medium, and when being executed by the processor, the mountain torrent early warning and monitoring program implements the steps of the mountain torrent early warning and monitoring method.
Has the advantages that: the technical scheme of the invention comprises the steps of firstly, acquiring rainfall data and water level data of the environment; then analyzing the rainfall data and the water level data, and determining an early warning grade according to the rainfall data and the water level data, so that the early warning grade at the moment is determined as a preliminary early warning grade; secondly, acquiring topographic data of the environment, and adjusting early warning levels according to the topographic data, so that the final early warning level can be judged and generated by combining the preliminary early warning level and the topographic data, and early warning information with higher accuracy can be generated; finally, determining the authority level of the user according to the user information, and generating an early warning signal according to the authority level and the early warning level so as to be suitable for early warning of more different situations; therefore, the requirement of hierarchical management can be met, corresponding feedback is made according to the early warning level, the early warning efficiency is improved, and the occurrence of accidents is reduced.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a flowchart of an embodiment of a method for monitoring a mountain torrent early warning according to the present invention.
Fig. 2 is a schematic structural diagram of a water amount detection component used in an embodiment of the method for early warning and monitoring of torrential flood according to the present invention.
The reference numbers indicate:
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that, if the present invention relates to directional indications (such as up, down, left, right, front, back, 8230; \8230;), the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a mountain torrent early warning and monitoring method.
As shown in fig. 1, in an embodiment of the present invention, the method for monitoring mountain torrents; the method comprises the following steps:
s1, acquiring rainfall data and water level data of an environment;
s2, determining an early warning grade according to the rainfall data and the water level data;
s3, acquiring topographic data of the environment;
s4, adjusting the early warning level according to the terrain data;
and S5, determining the authority level of the user according to the user information, and generating an early warning signal according to the authority level and the early warning level.
The technical scheme of the invention comprises the steps of firstly, acquiring rainfall data and water level data of the environment; then analyzing the rainfall data and the water level data, and determining an early warning grade according to the rainfall data and the water level data, so that the early warning grade at the moment is determined as a preliminary early warning grade; secondly, acquiring topographic data of the environment, and adjusting early warning levels according to the topographic data, so that the final early warning level can be judged and generated by combining the preliminary early warning level and the topographic data, and early warning information with higher accuracy can be generated; finally, determining the authority level of the user according to the user information, and generating an early warning signal according to the authority level and the early warning level so as to be suitable for early warning of more different situations; thereby, the requirements of graded management can be realized, corresponding feedback is made according to the early warning grade, the early warning efficiency is improved, and the occurrence of accidents is reduced
The terrain data includes terrain variation and terrain pre-deformation (where the pre-deformation refers to an impending wear condition or a condition capable of withstanding an external force).
Specifically, in some embodiments, in S1, in the step of acquiring rainfall data and water level data of an environment, the method includes:
detecting the water volume weight formed by precipitation or snowfall in the environment through a weighing detection part 1, and acquiring rainfall data of the environment according to the water volume weight; and obtaining a rate of change in weight of the amount of water.
Wherein, in the step of obtaining the change rate of the water amount weight, the method comprises the following steps:
when the change data of the water volume weight is larger than a preset change value, outputting a measured value of the water volume weight within a first preset time; and outputting the measurement value a first preset number of times.
In some embodiments, when the change data of the water amount weight is greater than a preset change value (that is, the change range of the weighing data is large), that is, the corresponding rainfall intensity is greater than 0.1 mm/min, the measured value of the water amount weight at each time can be output within 1 min, so that real-time output data can be obtained, and the detection reaction time is prolonged, so that the detected data has a rainfall output value with correct intensity; after the precipitation time is 5 first preset durations, namely 5 min, a total measurement result is output, so that the rainfall volume output can be detected more accurately; and further, the accumulated detection of real-time data and non-real-time data is realized, the accuracy of rainfall detection is guaranteed, and the early warning efficiency is improved.
Wherein, in the step of obtaining the change rate of the water amount weight, the method further comprises the following steps:
when the change data of the water volume and the weight is smaller than the preset change data, judging whether the total measured value of the water volume and the weight exceeds a first preset weight value within a second preset time period;
if the total measured value of the water volume and the weight exceeds the first preset weight value within the second preset time, outputting the total measured value of the water volume and the weight at the moment to the control module;
and if the total measured value of the water quantity and the weight does not exceed the first preset weight value within the second preset time, discharging the water stored in the weighing detection part 1 for the next detection and early warning.
That is to say, when precipitation or snowfall occurs, although the intensity of the precipitation is not so large, the time range is large, and the accumulated weight can reach a first preset weight value, at this time, the detection data output value control module is also required to be used for early warning; when the accumulated weight does not reach the first preset weight value, the state can be regarded as a safe state by default, and only the weight detection component 1 needs to store data and does not need to send the data to the control module; and after a certain time, discharging water in the weighing detection part 1 for the next detection and early warning.
Among them, in some embodiments, as shown in fig. 2, the weight detecting unit 1 includes a main housing, an accommodating inner case 11, a weight sensor 14, and a discharge control valve 16; the inner accommodating box 11 is connected inside the main shell, and the top of the inner accommodating box 11 is provided with at least two sampling channels 13, and the sampling channels 13 are communicated with the inner cavity of the inner accommodating box 11; the weight sensor 14 is connected to the inner bottom of the inner accommodating box 11; the discharge control valve 16 is connected to the main housing and communicates with the inner chamber of the accommodating inner case 11.
Wherein, the weighing detection component 1 also comprises a first heating body 12 and a second heating body 15; the first heating body 12 is connected to the main casing and abuts against the outer side wall of the containing inner box 11 close to the sampling channel 13; the second heating body 15 is connected to the main casing and abuts against the outer side wall of the middle part of the inner box 11. Snow accumulation outside the sampling channel can be prevented through the first heating body 12, the effective sampling area is prevented from being influenced, and the weighing data accuracy is prevented from being influenced; through second heating member 15 can be effectively for holding the inner box and heat preservation, avoid phenomenon such as inside water freezes, influence the accurate nature of weighing data.
Wherein, the first heating body 12 and the second heating body 15 both adopt heating tubes.
Specifically, in some embodiments, in S1, in the step of acquiring rainfall data and water level data of an environment, the method includes:
the water level detection component is used for monitoring the water level condition of the ponding area in the environment so as to monitor the water level data of the environment in real time. Wherein, the water level detection part adopts a water level monitor. The water level monitor transmits radar pulses from the sensor antenna which receives the pulses reflected from the water surface and records the time (T) which, since the propagation speed (C) of the electromagnetic waves is constant, yields the distance (D) to the water surface. The time from transmitting to receiving of the electromagnetic waves is in direct proportion to the distance from the electromagnetic waves to the water surface, and nanosecond time measurement is converted into millisecond time measurement, so that the measurement accuracy is greatly improved.
Specifically, in some embodiments, in S1, in the step of acquiring rainfall data and water level data of an environment, the method further includes:
the temperature, relative humidity, wind speed, wind direction, atmospheric pressure and photoelectric radiation of the environment are transmitted through a high-integration structure through a meteorological sensor to determine other factor data of the environment. The comprehensiveness of monitoring data is provided through various data, and the early warning accuracy is provided.
Specifically, in some embodiments, in S3, the step of acquiring the topographic data of the environment includes the following steps:
and acquiring video data or image data of the environment in real time through a view acquisition component, and acquiring region data of the environment according to the video data or the image data. Wherein, the view acquisition part adopts a network camera.
Specifically, in some embodiments, in S4, in the step of adjusting the early warning level according to the terrain data, the method includes:
comparing the region data of the real-time monitoring environment with the initially stored region data;
if the real-time environment difference data obtained by the comparison is larger than first preset environment difference data, the first early warning level is increased and adjusted to be the second early warning level;
and if the real-time environment difference data obtained by the comparison is smaller than or equal to first preset environment difference data, adjusting the first early warning level to be lower than the second early warning level.
That is to say, when the loss degree of the real-time environmental data of monitoring is too big relatively, alright heighten early warning level to guarantee the accuracy of early warning, make emergency personnel can make corresponding emergency measure.
Specifically, in some embodiments, in S5, in the step of determining the authority level of the user according to the user information, and generating the warning signal according to the authority level and the warning level, the method includes:
the control module determines whether the authority level of the user accords with a first level or a second level according to the user information;
if the authority level of the user accords with the first level authority, generating a broadcast type early warning signal according to the first level authority and the second early warning level;
and if the authority level of the user accords with the second level authority, generating a broadcast type early warning signal and an instruction type early warning signal according to the second level authority and the second early warning level.
That is, when the authority level of the user is too low, only the preset early warning information can be controlled to be sent and broadcasted; when the authority level of the user is too high, new early warning indication information can be edited and broadcasted according to actual conditions, and the preset early warning information can be controlled to be sent and broadcasted; therefore, the requirement of hierarchical management is realized, and hierarchical user management is supported. The new warning indication information may include a text message, a voice call, or a video call.
The invention also provides a mountain torrent early warning and monitoring system; comprises the following steps of;
the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for monitoring rainfall data and water level data of an environment in real time and monitoring region data of the monitored environment in real time;
and the control module is used for determining a first early warning grade according to the rainfall data and the water level data, adjusting the first early warning grade to a second early warning grade according to the region data, determining the authority grade of the user according to the user information, and generating a first early warning signal according to the authority grade and the second early warning grade.
The invention also provides a mountain torrent early warning and monitoring terminal.
The torrential flood early warning monitoring terminal provided by the embodiment of the invention can be an electronic product with a display screen, and can comprise terminal equipment such as a touch screen mobile phone, a Personal Computer (PC), a tablet Personal Computer, a portable Computer and a server.
Wherein, the terminal may include: a processor (e.g., CPU), a communications bus, a user interface, a network interface, and memory.
The present invention further provides a storage medium, on which a load paging program is stored, and the load paging program, when executed by a processor, implements the steps of the load paging method according to any one of the above embodiments. Wherein the steps include:
acquiring rainfall data and water level data of the environment;
determining an early warning level according to the rainfall data and the water level data;
obtaining topographic data of the environment;
adjusting the early warning level according to the terrain data;
and determining the authority level of the user according to the user information, and generating an early warning signal according to the authority level and the early warning level.
Further, in the step of acquiring rainfall data and water level data of the environment, the method includes:
detecting the water volume weight formed by precipitation or snowfall in the environment through a weighing detection part 1, and acquiring rainfall data of the environment according to the water volume weight; and obtaining a rate of change in weight of the amount of water.
Wherein, in the step of obtaining rainfall data and water level data of the environment, the method comprises the following steps:
detecting the water volume weight formed by precipitation or snowfall in the environment, and acquiring rainfall data of the environment according to the water volume weight; and obtaining a rate of change in weight of the amount of water.
Further, the step of obtaining the data rate of the change of the water amount weight includes the following steps:
when the change data of the water volume weight is larger than a preset change value, outputting a measured value of the water volume weight within a first preset time; and outputting the measurement value a first preset number of times.
Further, the step of obtaining the data rate of the change of the water amount weight further includes the following steps:
when the change data of the water volume and the weight is smaller than the preset change data, judging whether the total measured value of the water volume and the weight exceeds a first preset weight value within a second preset time period;
if the total measured value of the water quantity and the weight exceeds the first preset weight value within the second preset time, outputting the total measured value of the water quantity and the weight at the moment to the control module;
and discharging the water stored in the weighing detection part if the total measured value of the weight of the water amount does not exceed the first preset weight value within the second preset time period.
Further, the step of acquiring the topographic data of the environment includes the following steps:
and acquiring video data or image data of the environment, and acquiring region data of the environment according to the video data or the image data.
Further, in the step of adjusting the early warning level according to the terrain data, the method comprises:
comparing the region data of the real-time monitoring environment with the initially stored region data;
if the real-time environment difference data obtained by the comparison is larger than first preset environment difference data, the first early warning level is increased and adjusted to be the second early warning level;
and if the real-time environment difference data obtained by the comparison is smaller than or equal to first preset environment difference data, adjusting the first early warning level to be lower than the second early warning level.
Further, determining the authority level of the user according to the user information, and generating an early warning signal according to the authority level and the early warning level includes:
determining whether the authority level of the user accords with a first level or a second level according to the user information;
if the authority level of the user accords with the first level authority, generating a broadcast type early warning signal according to the first level authority and the early warning level;
and if the authority level of the user accords with the second level authority, generating a broadcast type early warning signal and an instruction type early warning signal according to the second level authority and the early warning grade.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The mountain torrent early warning and monitoring method is characterized by comprising the following steps of:
acquiring rainfall data and water level data of the environment;
determining an early warning level according to the rainfall data and the water level data;
obtaining topographic data of the environment;
adjusting the early warning level according to the terrain data;
and determining the authority level of the user according to the user information, and generating an early warning signal according to the authority level and the early warning level.
2. The method for monitoring mountain torrent early warning according to claim 1, wherein the step of obtaining rainfall data and water level data of the environment comprises:
detecting the water volume weight formed by precipitation or snowfall in the environment, and acquiring rainfall data of the environment according to the water volume weight; and obtaining a rate of change in weight of the amount of water.
3. The mountain torrent early warning and monitoring method according to claim 2, wherein the step of obtaining the data rate of the change of the water volume and the weight comprises the following steps:
when the change data of the water volume weight is larger than a preset change value, outputting a measured value of the water volume weight within a first preset time; and outputting the measurement value a first preset number of times.
4. The mountain torrent early warning and monitoring method according to claim 2 or 3, wherein the step of obtaining the data rate of the change of the water volume and the weight further comprises the steps of:
when the change data of the water volume and the weight is smaller than the preset change data, judging whether the total measured value of the water volume and the weight exceeds a first preset weight value within a second preset time period;
if the total measured value of the water quantity and the weight exceeds the first preset weight value within the second preset time, outputting the total measured value of the water quantity and the weight at the moment to the control module;
and discharging the water stored in the weighing detection part if the total measured value of the weight of the water amount does not exceed the first preset weight value within the second preset time period.
5. The method for monitoring mountain torrent early warning according to claim 1, wherein the step of obtaining topographic data of the environment comprises the following steps:
and acquiring video data or image data of the environment, and acquiring region data of the environment according to the video data or the image data.
6. The method for monitoring mountain torrent early warning according to claim 1, wherein the step of adjusting the early warning level according to the terrain data comprises:
comparing the region data of the real-time monitoring environment with the initially stored region data;
if the real-time environment difference data obtained by the comparison is larger than first preset environment difference data, the first early warning level is increased and adjusted to be the second early warning level;
and if the real-time environment difference data obtained by the comparison is smaller than or equal to first preset environment difference data, adjusting the first early warning level to be a second early warning level.
7. The method for monitoring and warning torrential flood according to claim 1, wherein determining the authority level of a user according to user information, and generating a warning signal according to the authority level and the warning level comprises:
determining whether the authority level of the user accords with a first level or a second level according to the user information;
if the authority level of the user accords with the first level authority, generating a broadcast type early warning signal according to the first level authority and the early warning level;
and if the authority level of the user accords with the second level authority, generating a broadcast type early warning signal and an instruction type early warning signal according to the second level authority and the early warning grade.
8. A mountain torrent early warning monitoring system is characterized by comprising;
the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for monitoring rainfall data and water level data of an environment in real time and monitoring region data of the monitored environment in real time;
and the control module is used for determining a first early warning grade according to the rainfall data and the water level data, adjusting the first early warning grade to a second early warning grade according to the region data, determining the authority grade of the user according to the user information, and generating a first early warning signal according to the authority grade and the second early warning grade.
9. The utility model provides a mountain torrent early warning monitor terminal which characterized in that, mountain torrent early warning monitor terminal includes: a memory, a processor and a torrential flood warning monitoring program stored on the memory and executable on the processor, the torrential flood warning monitoring program when executed by the processor implementing the steps of the torrential flood warning monitoring method according to any one of claims 1 to 7.
10. A storage medium for monitoring and warning of torrential floods, wherein the storage medium stores thereon a torrential floods warning and monitoring program, and when the torrential floods warning and monitoring program is executed by a processor, the steps of the method for monitoring and warning of torrential floods according to any one of claims 1 to 7 are implemented.
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| CN202210736689.9A CN115273404A (en) | 2022-06-27 | 2022-06-27 | Mountain torrent early warning monitoring method, system, terminal and storage medium |
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