Emergency debris flow ground sound early warning device and on-site rapid networking early warning method

Abstract

The application provides an emergency debris flow ground sound early warning device and a field rapid networking early warning method, the ground sound early warning device comprises a ground sound sensor, a ground sound telemetry terminal, an integrated live solar panel, an audible and visual alarm and a supporting assembly, the ground sound sensor is arranged at a to-be-measured position, the ground sound telemetry terminal, the integrated live solar panel and the audible and visual alarm are installed on the supporting assembly; the ground sound telemetry terminal is connected with the ground sound sensor and the audible and visual alarm respectively; the integrated live solar panel is connected with the ground sound sensor, the ground sound telemetry terminal and the audible and visual alarm respectively. The ground sound early warning device has good portability, small laying difficulty, can realize rapid laying and convenient debugging, and improves the accuracy and timeliness of the alarm through networking application.

Description

Technical Field

[0001] This invention belongs to the field of emergency monitoring technology, specifically relating to an emergency debris flow ground acoustic early warning instrument and a method for rapid on-site network early warning. Background Technology

[0002] Currently, a comprehensive monitoring method has been developed for long-term early warning and monitoring of debris flow disasters. This includes: intelligent rain gauges monitoring rainfall at different locations upstream, midstream, and downstream of debris flow gullies; soil moisture meters monitoring the moisture content of debris flow source areas; ground acoustic warning instruments capturing ground acoustic signals from debris flow source areas; infrasound monitoring instruments capturing infrasound signals from debris flow source areas; mud level gauges monitoring changes in gully water levels and debris flow deposit thickness; flow velocity meters monitoring changes in the flow velocity of mud and water in gullies; and video monitoring systems monitoring changes in imagery at debris flow sites. This comprehensive monitoring method can provide relatively accurate early warnings of debris flow disasters, but its deployment is difficult, time-consuming, and lacks real-time accuracy. According to incomplete statistics, less than one-third of existing geological disaster monitoring sites have been deployed. For sites without installed equipment, there is an urgent need for rapidly deployable and accurately warning emergency debris flow monitoring equipment when a disaster occurs. Summary of the Invention

[0003] To address the technical challenges of existing conventional monitoring equipment, such as the difficulty in deployment, long deployment period, large workload of debugging, and insufficient real-time performance of comprehensive early warning platforms, this invention provides an emergency debris flow ground acoustic early warning instrument and a rapid on-site network early warning method. It can directly enable multi-device linkage decision-making and early warning at the front end, and has the advantages of convenient installation, easy debugging, and high real-time early warning performance.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0005] This invention provides an emergency debris flow ground acoustic early warning device, comprising a ground acoustic sensor, a ground acoustic telemetry terminal, an integrated charged solar panel, an audible and visual alarm, and a support assembly. The ground acoustic sensor is disposed at the location to be measured, and the ground acoustic telemetry terminal, the integrated charged solar panel, and the audible and visual alarm are mounted on the support assembly. The ground acoustic telemetry terminal is connected to the ground acoustic sensor and the audible and visual alarm respectively. The integrated charged solar panel is connected to the ground acoustic sensor, the ground acoustic telemetry terminal, and the audible and visual alarm respectively.

[0006] Furthermore, the ground acoustic telemetry terminal includes a 4G communication module, a BeiDou satellite communication module, a LoRA communication module, a Bluetooth module, a storage module, and a video module; the 4G communication module is used for emergency communication; the BeiDou satellite communication module is used for time synchronization and emergency communication when the 4G signal is poor; the LoRA communication module is used for on-site network linkage early warning; the Bluetooth module is used for wireless debugging of the ground acoustic early warning instrument; the storage module is used for storing data and video files; and the video module is used for capturing images.

[0007] Furthermore, the ground acoustic sensor is a moving coil sensor with a natural frequency of 0.2 to 2 Hz, and the ground acoustic sensor and the ground acoustic telemetry terminal use a digital interface.

[0008] This invention provides a comprehensive early warning system, comprising at least three sets of ground acoustic warning instruments, with one set as the master device and the others as slave devices. The master device uses the aforementioned ground acoustic warning instrument. Each slave device includes a ground acoustic sensor, a ground acoustic telemetry terminal, an integrated charged solar panel, and a support assembly. The ground acoustic sensor is positioned at the location to be measured, and the ground acoustic telemetry terminal and the integrated charged solar panel are mounted on the support assembly. The ground acoustic telemetry terminal is connected to the ground acoustic sensor. The integrated charged solar panel is connected to both the ground acoustic sensor and the ground acoustic telemetry terminal. The ground acoustic telemetry terminal includes a LoRA communication module, a Bluetooth module, and a storage module. The LoRA communication module is used for on-site network-based linkage early warning, and the Bluetooth module is used for wireless debugging of the ground acoustic warning instrument.

[0009] This invention provides a method for rapid on-site networking and early warning of debris flow ground acoustic early warning devices, comprising the following steps:

[0010] At least three sets of ground acoustic warning devices are used, with one set as the main device and the others as slave devices, and the deployment locations are selected accordingly.

[0011] Each set of ground acoustic early warning instruments undergoes power-on, self-test, and time synchronization.

[0012] Confirm the network configuration of the master and slave devices;

[0013] Install and fix master and slave devices;

[0014] Both the master and slave devices are in the intermittent acquisition mode for debris flow ground acoustic sequences, and data is collected periodically.

[0015] If the average ground sound intensity value obtained by any ground sound early warning instrument in intermittent acquisition mode exceeds the ground sound intensity threshold, the ground sound early warning instrument will enter the debris flow ground sound sequence encrypted acquisition mode.

[0016] When two or more ground acoustic warning devices detect a debris flow warning event in encrypted acquisition mode, the main device sends an alarm message.

[0017] Furthermore, the intermittent acquisition mode specifically refers to,

[0018] When the ground acoustic warning instrument enters the intermittent acquisition mode cycle T1, it starts acquiring ground acoustic signals on site. The data acquisition duration for each cycle is t1n, and the number of sampling points are x1, x2, ..., xm respectively.

[0019] The average ground acoustic intensity for each cycle is calculated as [1 / m*(x1*x1+..xm*xm)]. 1 / 2 ;

[0020] If the average ground sound intensity is not greater than V 阈值1 If the intermittent acquisition mode is executed repeatedly, the encrypted acquisition mode will be entered.

[0021] Furthermore, the encrypted acquisition mode is as follows:

[0022] When the ground acoustic warning instrument enters the encrypted acquisition mode, it starts to acquire ground acoustic signals on site and acquires data packets according to the data duration t2n;

[0023] Calculate the time-domain energy, amplitude spectrum, and energy spectrum of each data packet;

[0024] Calculate the energy percentage factor for each data packet.

[0025] Ki = W1i / Wi

[0026] Where W1i is the sum of the energy values ​​of the ground acoustic signal in the energy spectrum of the i-th data packet within the frequency range of 0.2 to 50 Hz; Wi is the time-domain energy of the i-th data packet, 1≤i≤N;

[0027] If, in all data packets, more than half of the data packets consecutively exceed the energy percentage factor threshold, a debris flow early warning event is output; otherwise, the system enters the intermittent acquisition mode for debris flow ground acoustic sequences.

[0028] Furthermore, in the intermittent acquisition mode, the acquisition period T1 ranges from 30s to 60s; the acquisition duration t1n ranges from 10s to 30s; the ground sound intensity threshold is 3 to 5 times the background noise intensity; in the encrypted acquisition mode, the acquisition duration t2n is no greater than 2s, the number of data packets N ranges from 15 to 20, and the energy proportion factor threshold K ranges from 0.7 to 0.95.

[0029] Furthermore, if the slave device detects a debris flow warning event in encrypted acquisition mode, it sends the warning to the master device; otherwise, it enters intermittent acquisition mode.

[0030] If the master device detects a debris flow warning event in encrypted acquisition mode, it waits to see if the slave device detects a debris flow warning event. If it receives a debris flow warning event from at least one slave device, it sends an alarm message; otherwise, it enters intermittent acquisition mode.

[0031] When intermittent acquisition mode and encrypted acquisition mode overlap, encrypted acquisition mode shall be executed first.

[0032] Furthermore, the deployment location is centered on the main device and placed near the debris flow path. Multiple slave devices are evenly distributed with similar spacing from the main device, placed on both sides of the debris flow path and biased towards the vibration source direction. The main and slave devices are networked using LoRA communication to confirm the connection through handshake signals and response signals.

[0033] The beneficial effects of this invention compared to the prior art are as follows:

[0034] The ground acoustic early warning device for emergency debris flows designed in this invention can be quickly installed and deployed using support components; the ground acoustic telemetry terminal uses multiple communication methods to achieve rapid debugging and data communication, and uses a video module to acquire real-time images for easy early warning analysis; the integrated charged solar panel has a simple structure, small size, and is easy to carry and assemble. This ground acoustic early warning device is highly portable, easy to deploy, and can be quickly deployed and conveniently debugged.

[0035] This invention connects multiple sets of debris flow acoustic early warning instruments in a field network for coordinated monitoring, forming a comprehensive early warning system that can greatly improve the accuracy and timeliness of alarms.

[0036] The on-site rapid networking early warning method of the present invention can directly enable multi-device linkage decision-making and early warning at the front end, and has the advantages of convenient installation, convenient debugging, and high real-time early warning. Detailed Implementation

[0037] Specific embodiments of the present invention will now be described in detail. In the following description, specific details are set forth for purposes of explanation and not limitation, in order to aid in a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced in other embodiments departing from these specific details.

[0038] This invention provides an emergency debris flow ground acoustic early warning device, comprising a ground acoustic sensor, a ground acoustic telemetry terminal, an integrated charged solar panel, an audible and visual alarm, and a support assembly. The ground acoustic sensor is positioned at the location to be measured; the ground acoustic telemetry terminal, the integrated charged solar panel, and the audible and visual alarm are mounted on the support assembly; the ground acoustic telemetry terminal is connected to the ground acoustic sensor and the audible and visual alarm respectively, for signal acquisition, image acquisition, data storage, and transmission; the integrated charged solar panel is connected to the ground acoustic sensor, the ground acoustic telemetry terminal, and the audible and visual alarm respectively, providing power to each component.

[0039] The ground acoustic telemetry terminal is used for signal acquisition, image acquisition, data storage, and transmission. It includes a 4G communication module, a Beidou satellite communication module, a LoRA communication module, a Bluetooth module, a storage module, and a video module. The 4G communication module is used for emergency communication, the Beidou satellite communication module is used for time synchronization and emergency communication when the 4G signal is poor, the LoRA communication module is used for on-site network linkage early warning, the Bluetooth module is used for wireless debugging of the ground acoustic early warning instrument, and provides self-test, parameter status, configuration information, etc. The storage module is used to store data and video files, and the video module is used to capture images.

[0040] The ground acoustic early warning device for emergency debris flows designed in this invention can be quickly installed and deployed using support components; the ground acoustic telemetry terminal uses multiple communication methods to achieve rapid debugging and data communication, and uses a video module to acquire real-time images for easy early warning analysis; the integrated charged solar panel has a simple structure, small size, and is easy to carry and assemble. This ground acoustic early warning device is highly portable, easy to deploy, and can be quickly deployed and conveniently debugged.

[0041] The debris flow acoustic early warning instrument is one of the fastest responding monitoring devices among early warning methods. Considering that the single debris flow acoustic forecasting and early warning method has the disadvantage of a high false alarm rate, this invention connects multiple debris flow acoustic early warning instruments in the field for coordinated monitoring, forming a comprehensive early warning system, which can greatly improve the accuracy and timeliness of the alarm.

[0042] This invention provides a comprehensive early warning system that networks at least three sets of ground acoustic warning devices with networking capabilities. One set is the master device, and the others are slave devices. The master device is placed near the debris flow path, with multiple slave devices evenly distributed and spaced close to the master device, positioned on both sides of the debris flow path, biased towards the vibration source (to detect debris flow events earlier than the master device). Through rapid on-site deployment and networked early warning, a comprehensive early warning system is formed, which can greatly improve the accuracy and timeliness of alarms.

[0043] This invention provides a method for rapid on-site networking and early warning of debris flow ground acoustic early warning devices, comprising the following steps:

[0044] At least three sets of ground acoustic warning devices are used, with one set as the main device and the others as slave devices, and the deployment locations are selected accordingly.

[0045] Each set of ground acoustic early warning instruments undergoes power-on, self-test, and time synchronization.

[0046] Confirm the network configuration of the master and slave devices;

[0047] Install and fix master and slave devices;

[0048] Both the master and slave devices are in the intermittent acquisition mode for debris flow ground acoustic sequences, and data is collected periodically.

[0049] If the average ground sound intensity value obtained by any ground sound warning device in the intermittent acquisition mode exceeds the ground sound intensity threshold, the ground sound warning device enters the encrypted acquisition mode for the debris flow ground sound sequence.

[0050] When more than two sets of ground sound warning devices detect debris flow warning events in the encrypted acquisition mode, the main device sends an alarm message.

[0051] Preferably, after the main device receives debris flow warning events sent by at least one slave device, it takes a video photo, activates the sound and light alarm, and uploads the warning information and images to the center.

[0052] This method can directly perform joint decision-making and early warning on multiple devices at the front end, and has the advantages of convenient installation, easy debugging, and high real-time warning.

[0053] The technical solution of the present invention will be elaborated in detail below in combination with a specific embodiment.

[0054] A method for on-site rapid networking and early warning of a debris flow ground sound warning device for emergency use provided by the present invention has the main carrier as the debris flow ground sound warning device. At least three sets of devices need to be networked to complete the on-site rapid deployment and early warning method. One set of devices is used as the main device, and the other two sets of devices are used as slave devices.

[0055] The debris flow ground sound warning device of the main device mainly includes a ground sound sensor, a ground sound telemetry terminal, an integrated solar panel with electricity, a sound and light alarm, and a support component.

[0056] The ground sound sensor is a moving coil sensor with a natural frequency close to 0.2 - 2 Hz, which can be placed at a long distance to sense the vibration signal generated during the occurrence of debris flow. The sensor communicates with the ground sound telemetry terminal through a digital interface. Compared with the analog interface, it is more conducive to the long-distance distortion-free transmission of weak signals. Since the ground sound sensor is a super-low-frequency sensor, it can be placed 0.5 kilometers away from the debris flow source. In this way, even when debris flow occurs, there is enough time for safe evacuation.

[0057] The ground sound telemetry terminal is the core component of the debris flow ground sound warning device, mainly completing the functions of signal acquisition, storage, image capture, and data transmission of the on-site ground sound sensor. It integrates 4G communication, Beidou satellite timekeeping and communication functions, integrates LoRA rapid networking function, and integrates Bluetooth wireless debugging function. Among them, 4G is the main communication method of the emergency module. When the on-site 4G signal is not good, it will automatically switch to the Beidou communication method. Its LoRA communication is used for on-site networking and joint early warning, and it can be configured as a coordinator. In addition, using the Bluetooth wireless debugging function, convenient debugging can be carried out on-site.

[0058] The integrated charged solar panel is a small-sized structure that combines the battery and solar panel into one unit, and is used to power the debris flow ground acoustic early warning instrument.

[0059] Audible and visual alarms are on-site early warning devices for debris flow disaster sites.

[0060] The debris flow ground acoustic early warning device mainly consists of ground acoustic sensors, ground acoustic telemetry terminals, integrated charged solar panels, and supporting components. The ground acoustic sensors and integrated charged solar panels are identical to those in the main equipment. The ground acoustic telemetry terminal primarily performs signal acquisition, storage, and data transmission functions from the on-site ground acoustic sensors, integrating LoRA rapid networking and Bluetooth wireless debugging capabilities. LoRA communication is used for on-site network-based coordinated early warning and can be configured as a terminal.

[0061] A rapid on-site networking method for emergency debris flow acoustic early warning devices is proposed, primarily employing three or more sets of debris flow acoustic early warning devices equipped with LoRA networking for comprehensive on-site early warning. Three sets constitute a minimum emergency monitoring unit, arranged in a triangular pattern. One set is placed near the debris flow path, while the other two sets of acoustic sensors are placed on either side of the debris flow path, forming an inverted triangle. The on-site deployment and networking method is as follows:

[0062] 1. Select points according to the inverted triangle selection principle, with a spacing of approximately 50 meters between each point;

[0063] 2. Power on the three sets of debris flow acoustic warning devices and check their self-test status via Bluetooth. If they are normal, proceed to the next step; otherwise, the cause needs to be identified.

[0064] 3. Complete satellite time synchronization in an open area;

[0065] 4. Check via Bluetooth whether the master device configured as the coordinator has successfully paired with the two slave devices in a LoRA network. If successful, proceed to the next step; otherwise, the cause needs to be investigated.

[0066] 5. Dig three small pits, each 300mm*300mm*500mm, bury the ground acoustic sensors, and compact the soil.

[0067] 6. Securely attach the metal claws of the tripod supports of the three debris flow ground acoustic early warning devices to the ground.

[0068] A rapid on-site networking method for emergency debris flow ground acoustic early warning instruments is disclosed, which mainly uses ground acoustic signals generated during debris flow events for early warning. Both the master and slave devices have two acquisition modes: an intermittent debris flow ground acoustic sequence acquisition mode and a debris flow early warning encrypted acquisition mode. When the two acquisition modes overlap, the debris flow early warning encrypted acquisition mode is executed first.

[0069] A rapid on-site networking method for emergency debris flow ground acoustic early warning instruments is proposed. Its intermittent acquisition mode for debris flow ground acoustic sequences primarily performs energy analysis of the signal in the time domain. The parameters that need to be set are: the period of the intermittent acquisition mode is T1, the data acquisition duration of each period is t1n, and the ground acoustic intensity threshold is V. 阈值1 The sampling frequency is generally set to 200–500 Hz. Detailed steps for intermittent sampling mode are as follows:

[0070] 1. When the period T1 time of the debris flow ground acoustic early warning instrument has not arrived, the equipment is in standby mode;

[0071] 2. When the period T1 of the debris flow ground acoustic early warning instrument expires, the device will start collecting ground acoustic signals from the site for at least t1n duration, with the number of sampling points being x1, x2, ..., xm respectively;

[0072] 3. The debris flow ground acoustic early warning instrument calculates the average ground acoustic intensity value for each cycle t1n, [1 / m*(x1*x1+..xm*xm)]. 1 / 2 ;

[0073] 4. If the average ground acoustic intensity value is not greater than V 阈值1 Then the device will cycle through steps 1 to 3.

[0074] 5. If the average ground acoustic intensity value is greater than V 阈值1 If so, the device enters the early warning encrypted data collection mode;

[0075] 6. If the device exits the encrypted data acquisition mode, the device will repeatedly execute steps 1 to 3.

[0076] Preferably, T1 ranges from 30s to 60s; t1n < T1, and t1n ranges from 10s to 30s; the ground acoustic intensity threshold is V. 阈值1 The value should be 3 to 5 times the intensity of the background noise.

[0077] A rapid on-site networking early warning method for emergency debris flow ground acoustic early warning instruments is disclosed. Its encrypted acquisition mode for debris flow early warning primarily analyzes signals in the time and frequency domains. In the time domain, the total energy of the acquired signals is extracted. In the frequency domain, continuous FFT transformation is performed on the real-time acquired ground acoustic signals to obtain their amplitude spectrum and energy spectrum, followed by energy spectrum analysis. In this mode, the device continuously acquires data. To facilitate data processing, the data is collected in packets according to duration, and each packet is processed. The parameters that need to be set in this mode are: in the encrypted acquisition mode, the data acquisition duration is t2n, where t2n is no greater than 2 seconds; the number of data packets acquired is N (N is greater than or equal to 15 and less than or equal to 20); and the energy proportion factor threshold K (K ranges from 0.7 to 0.95). The detailed steps of the encrypted acquisition mode are as follows:

[0078] 1. When the device enters the early warning encryption data collection mode, the device starts collecting the first data packet. The continuous collection time is t2n, and the number of collection points are x11, x21, ..., xn1, where t2n is no greater than 2 seconds.

[0079] 2. The device collects the second data packet, with a continuous collection time of t2n, and the number of collection points are x12, x22, ..., xn2, where t2n is no greater than 2 seconds;

[0080] 3. Collect the Nth data packet sequentially, with a continuous collection time of t2n, i.e., x1N, x2N, ..., xnN, where t2n is no greater than 2 seconds;

[0081] 4. Calculate the time-domain energy of the first data packet. For example, the time-domain energy of the first data packet is W1 = (x11*x11 + ... xn1*xn1).

[0082] 5. Perform an FFT transform on the first packet of data to obtain its amplitude spectrum, and then calculate the energy spectrum of the first packet of data;

[0083] 6. Select energy values ​​within the frequency range of 0.2–50 Hz from the energy spectrum of the first packet of data, calculate the sum of all energy values ​​W11, and calculate K1 = W11 / W1.

[0084] 7. Calculate K2...KN sequentially using the methods from steps 4 to 6;

[0085] 8. Calculate the number N of values ​​greater than the threshold K in K1...KN sequentially. k ;

[0086] 9. If N k Not less than N / 2, and N k A continuous sequence of data packets indicates a debris flow warning event. The warning is then activated, exiting the debris flow warning encrypted acquisition mode and entering the debris flow ground acoustic sequence intermittent acquisition mode.

[0087] 10. If N k If the value is less than N / 2, exit the debris flow early warning encrypted acquisition mode and enter the debris flow ground sound sequence intermittent acquisition mode.

[0088] A method for rapid on-site networking and early warning of debris flow ground acoustic early warning devices is disclosed, which involves networking at least three sets of debris flow ground acoustic early warning devices. The workflow of the main device is as follows:

[0089] 1. After power-on, complete the self-test of all functional modules and send self-test information via Bluetooth;

[0090] 2. Complete the timing synchronization for BeiDou satellites;

[0091] 3. Check if handshake signals have been received from both slave devices (terminals);

[0092] 4. If received, send an acknowledgment response to both slave devices; if not received, it is necessary to determine whether the problem is caused by a device malfunction or signal obstruction in the field.

[0093] 5. The main equipment enters the intermittent acquisition mode for debris flow ground acoustic sequences.

[0094] 6. If the master device enters the debris flow warning encryption mode, and if it is determined to be a debris flow warning event, it waits at least 5 seconds to check whether it has received a debris flow warning event from the slave device; if the master device does not enter the debris flow warning encryption mode or does not determine to be a debris flow warning event, it continues to execute step 5.

[0095] 7. If any one or two debris flow warning events are received from the device, the video module will be switched on, the fast capture function will be activated, and the on-site sound and light alarm function will be activated. At the same time, the warning information and images will be uploaded to the center via 4G or Beidou. Otherwise, continue to step 5.

[0096] A method for rapid on-site networking and early warning of debris flow ground acoustic early warning devices for emergency use, employing at least three sets of debris flow ground acoustic early warning devices in a network, wherein the workflow of the devices is as follows:

[0097] 1. After power-on, complete the self-test of all functional modules and send self-test information via Bluetooth;

[0098] 2. Complete the timing synchronization for BeiDou satellites;

[0099] 3. Send a handshake signal to the master device via LoRA;

[0100] 4. Check if a response signal has been received from the main device; if so, proceed to step 5; otherwise, it is necessary to determine whether the problem is caused by a device malfunction or signal obstruction at the site.

[0101] 5. Enter the intermittent acquisition mode of debris flow ground acoustic sequence from the equipment.

[0102] 6. If the device enters the debris flow warning encryption mode and is determined to be a debris flow warning event, then the device sends the debris flow warning event status information to the master device via LoRa; if the device does not enter the debris flow warning encryption mode or is not determined to be a debris flow warning event, then continue to step 5.

[0103] The features described and / or illustrated above with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, and / or in combination with or in lieu of features in other embodiments.

[0104] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, components, or combinations thereof.

[0105] Many features and advantages of these embodiments are apparent from this detailed description, and therefore the appended claims are intended to cover all such features and advantages of these embodiments that fall within their true spirit and scope. Furthermore, since many modifications and alterations will readily occur to those skilled in the art, the embodiments of the invention are not intended to be limited to the precise structures and operations illustrated and described, but rather to encompass all suitable modifications and equivalents falling within their scope.

[0106] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0107] The parts of this invention not described in detail are techniques known to those skilled in the art.

Claims

1. A method for rapid on-site networking and early warning of debris flow ground acoustic early warning devices for emergency use, characterized in that, Includes the following steps, At least three sets of ground acoustic warning devices are used, with one set as the main device and the others as slave devices, and the deployment locations are selected accordingly. Each set of ground acoustic early warning instruments undergoes power-on, self-test, and time synchronization. Confirm the network configuration of the master and slave devices; Install and fix master and slave devices; Both the master and slave devices are in the intermittent acquisition mode for debris flow ground acoustic sequences, and data is collected periodically. If the average ground sound intensity value obtained by any ground sound early warning instrument in intermittent acquisition mode exceeds the ground sound intensity threshold, the ground sound early warning instrument will enter the debris flow ground sound sequence encrypted acquisition mode. When two or more ground acoustic warning devices detect a debris flow warning event in encrypted acquisition mode, the main device sends an alarm message. The main equipment's ground acoustic warning instrument includes a ground acoustic sensor, a ground acoustic telemetry terminal, an integrated charged solar panel, an audible and visual alarm, and a support assembly. The ground acoustic sensor is positioned at the location to be measured, and the ground acoustic telemetry terminal, the integrated charged solar panel, and the audible and visual alarm are mounted on the support assembly. The ground acoustic telemetry terminal is connected to the ground acoustic sensor and the audible and visual alarm, respectively. The integrated charged solar panel is connected to the ground acoustic sensor, the ground acoustic telemetry terminal, and the audible and visual alarm, respectively. The ground acoustic warning device includes a ground acoustic sensor, a ground acoustic telemetry terminal, an integrated charged solar panel, and a support assembly. The ground acoustic sensor is positioned at the location to be measured, and the ground acoustic telemetry terminal and the integrated charged solar panel are mounted on the support assembly. The ground acoustic telemetry terminal is connected to the ground acoustic sensor. The integrated charged solar panel is connected to both the ground acoustic sensor and the ground acoustic telemetry terminal. The ground acoustic telemetry terminal includes a LoRA communication module, a Bluetooth module, and a storage module. The LoRA communication module is used for on-site network-based linkage warning, and the Bluetooth module is used for wireless debugging of the ground acoustic warning device. The encrypted data collection mode is as follows: When the ground acoustic warning instrument enters the encrypted acquisition mode, it starts to acquire ground acoustic signals on site and acquires data packets according to the data duration t2n; Calculate the time-domain energy, amplitude spectrum, and energy spectrum of each data packet; Calculate the energy percentage factor for each data packet. Ki = W1i / Wi Where W1i is the sum of the energy values ​​of the ground acoustic signal in the energy spectrum of the i-th data packet within the frequency range of 0.2 to 50 Hz; Wi is the time-domain energy of the i-th data packet, 1≤i≤N; If, in all data packets, more than half of the data packets consecutively exceed the energy percentage factor threshold, a debris flow early warning event is output; otherwise, the system enters the intermittent acquisition mode for debris flow ground acoustic sequences.

2. The method for rapid on-site networking and early warning of emergency debris flow acoustic early warning devices according to claim 1, characterized in that, The intermittent acquisition mode is specifically as follows: When the ground acoustic warning instrument enters the intermittent acquisition mode cycle T1, it starts acquiring ground acoustic signals on site. The data acquisition duration for each cycle is t1n, and the number of sampling points are x1, x2, ..., xm respectively. The average ground acoustic intensity for each cycle is calculated as [1 / m*(x1*x1+..xm*xm)]. 1 / 2 ; If the average ground sound intensity is not greater than V 阈值1 If the intermittent acquisition mode is executed repeatedly, the encrypted acquisition mode will be entered.

3. The method for rapid on-site networking and early warning of emergency debris flow acoustic early warning devices according to claim 1, characterized in that, The acquisition period T1 of the intermittent acquisition mode ranges from 30s to 60s; the acquisition duration t1n ranges from 10s to 30s. The ground sound intensity threshold is 3 to 5 times the background noise intensity; the acquisition time t2n of the encrypted acquisition mode is no more than 2 seconds, and the number of data packets N is 15 to 20; the energy proportion factor threshold K is 0.7 to 0.

95.

4. The method for rapid on-site networking and early warning of emergency debris flow acoustic early warning devices according to claim 1, characterized in that, If the slave device detects a debris flow warning event in encrypted acquisition mode, it sends the warning to the master device; otherwise, it enters intermittent acquisition mode. If the master device detects a debris flow warning event in encrypted acquisition mode, it waits to see if the slave device detects a debris flow warning event. If it receives a debris flow warning event from at least one slave device, it sends an alarm message; otherwise, it enters intermittent acquisition mode. When intermittent acquisition mode and encrypted acquisition mode overlap, encrypted acquisition mode shall be executed first.

5. The method for rapid on-site networking and early warning of emergency debris flow acoustic early warning devices according to claim 1, characterized in that, The deployment location is centered on the main equipment and placed near the debris flow path. Multiple slave equipment are evenly distributed with similar spacing from the main equipment, placed on both sides of the debris flow path and biased towards the vibration source direction. The master and slave devices are networked using LoRA communication, which confirms each other through handshake and response signals.

6. The method for rapid on-site networking and early warning of emergency debris flow acoustic early warning instruments according to claim 1, characterized in that, The ground acoustic telemetry terminal includes a 4G communication module, a BeiDou satellite communication module, a LoRA communication module, a Bluetooth module, a storage module, and a video module. The 4G communication module is used for emergency communication; the BeiDou satellite communication module is used for time synchronization and emergency communication when the 4G signal is poor; the LoRA communication module is used for on-site network linkage early warning; the Bluetooth module is used for wireless debugging of the ground acoustic early warning instrument; the storage module is used to store data and video files; and the video module is used to capture images.

7. The method for rapid on-site networking and early warning of emergency debris flow acoustic early warning instruments according to claim 1, characterized in that, The ground acoustic sensor is a moving coil sensor with a natural frequency of 0.2 to 2 Hz, and a digital interface is used between the ground acoustic sensor and the ground acoustic telemetry terminal.

8. A comprehensive early warning system, characterized in that, It includes at least three sets of ground acoustic warning instruments, with one set as the master device and the others as slave devices; the integrated warning system adopts the on-site rapid networking warning method for emergency debris flow ground acoustic warning instruments as described in any one of claims 1 to 7.