Dam termite prevention and control system and method based on audio repelling

Abstract

The invention relates to the technical field of water conservancy project protection, in particular to a dam termite prevention and control system and method based on audio repellency, and the system comprises an audio frequency device and a monitoring feedback module, the sound source module is used for generating acoustic vibration signals and transmitting the acoustic vibration signals to soil to repel termites; the signal control module is used for controlling the working mode and sound wave output parameters of the sound source module; the energy supply unit is used for providing power for the signal control module and the sound source module, the audio frequency devices are linearly arranged along the outer side of the dam, and sound field coverage of the adjacent devices is overlapped and joined to form a continuous audio frequency barrier protection belt; and the monitoring feedback module is independently arranged at the termite source area side at the periphery of the audio barrier and is used for monitoring the termite activity condition in real time and feeding back the termite activity condition to the signal control module. The feasibility and effectiveness of termite repelling are achieved through sound vibration, and the special requirement of a water conservancy dam for termite prevention can be met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic engineering protection, and particularly relates to a dam termite prevention system and method based on audio repellence. BACKGROUND

[0002] Termite damage is one of the important safety hazards faced by water conservancy dams. Termites breed in soil dams, dig through the crisscrossed ant paths, which can cause dam seepage, piping and other dangerous situations, and even cause dam breach in severe cases. Traditional dam termite prevention techniques mainly include chemical barriers, physical barriers and repellent plants. Chemical barriers apply chemical agents (such as liquid termite-killing agents, toxic soil layers, etc.) in the dam body or surrounding soil to form a chemical barrier to prevent termite invasion. This method has obvious short-term effect, but has the risk of ecological environmental pollution: the agent may spread with the water flow, causing harm to the water body and surrounding organisms; and the agent needs to be replenished repeatedly after expiration. Physical barriers block termites by setting up physical isolation structures. For example, anti-termite soil layers (such as salt clay layers), sand and stone isolation layers, impermeable membranes, metal nets, etc. are laid during construction, or protective trenches are dug to block termite channels. The disadvantage of physical barriers is high construction cost, heavy workload, and difficulty in modifying existing dams. Once the barrier has a gap or is aged, termites may still bypass and invade. Repellent plants are planted around the dam to reduce termite approach by the chemical substances or odors emitted by certain plants claimed to have repellent effect on termites. For example, daisy, Schima superba and other plants are planted, which are believed to have repellent effect. This method is relatively environmentally friendly, but the actual effect needs to be verified: the repellent effect of plants may be limited and slow, and the growth of plants is limited by seasons and maintenance conditions.

[0003] In recent years, some intelligent prevention and control explorations for dam termites have also emerged. For example, a patent proposes a device integrating termite attraction, monitoring and identification, intelligent early warning and automatic pesticide killing, which realizes early detection and automatic disposal of dam termites. There are also studies on using sound sensing to detect termite activity in order to detect termite invasion as soon as possible. For example, the existing Chinese patent CN117031577A discloses a termite detection system, which realizes early detection of termites through sound collection technology. The system includes a detection module for termites to eat, a sound collection module, a signal preprocessing module, etc. When termites eat the detection body, the vibration sound is resonated and amplified in the cavity, converted into an electric signal by a pickup, and then processed to finally determine whether termites exist and the size of the group. However, this technology still focuses on detection and identification after termite invasion, which belongs to the passive response technical route, and lacks active prevention means for termite invasion. In addition, this technology relies on the eating behavior of termites to trigger detection, which has a response lag, and cannot effectively intercept termites before they approach the dam. Studies have shown that termites are highly sensitive to sound and substrate vibration, which is one of their main communication methods. They can make gathering, warning, avoidance and other behavioral responses according to specific acoustic vibration signals, but there is no active acoustic prevention technology for dam termites in water conservancy engineering at present. SUMMARY

[0004] Therefore, the present application provides a dam termite prevention and control system and method based on audio repulsion to solve the technical problems of existing termite prevention and control systems, such as response lag and difficulty in effectively intercepting termites before they approach the dam.

[0005] The technical solution of the present application is as follows: The present application provides a dam termite prevention and control system based on audio repulsion, which comprises an audio device and a monitoring feedback module, wherein the audio device comprises:

[0006] A protective shell partially buried in the dam soil, comprising a sealingly connected upper shell and a lower shell,

[0007] A sound source module housed in the lower shell for generating acoustic vibration signals and transmitting them into the soil, forming a repelling effect on termites through acoustic vibration;

[0008] A signal control module housed in the upper shell and electrically connected to the sound source module for controlling the working mode and sound wave output parameters of the sound source module; wherein the working mode includes a daily patrol mode and an alarm and driving mode, and the signal control module controls the sound source module to switch the working mode according to the termite activity;

[0009] An energy supply unit electrically connected to the signal control module and the sound source module for providing power for the signal control module and the sound source module;

[0010] The audio devices are linearly arranged along the outer side of the dam, the sound fields of adjacent devices overlap each other, and a continuous audio barrier protection belt is formed.

[0011] The monitoring feedback module is independently arranged at the side of the termite source area outside the audio barrier, is in communication connection with the signal control module, and is used for monitoring the termite activity in real time and feeding back to the signal control module.

[0012] On the basis of the above technical scheme, preferably, the sound source module comprises:

[0013] The vibration exciter is used for generating an acoustic vibration signal;

[0014] The vibration block is in a frustum structure, is rigidly connected with the vibration surface of the vibration exciter, and is used for receiving the vibration generated by the vibration exciter;

[0015] The stainless steel ground pile is connected with the vibration block at one end and is inserted into the soil at the other end, and is used for transmitting the acoustic vibration signal received by the vibration block to the soil;

[0016] The vibration exciter, the vibration block and the stainless steel ground pile form a rigid vibration conduction chain, and the acoustic vibration signal is transmitted to the soil medium.

[0017] On the basis of the above technical scheme, preferably, the acoustic vibration signal comprises a natural enemy signal and a repelling signal, the frequency of the natural enemy signal is 250-750 Hz, and the frequency of the repelling signal is 2000 Hz-10000 Hz.

[0018] On the basis of the above technical scheme, preferably, the signal control module comprises:

[0019] The MCU controller is used for executing control logic and processing feedback information;

[0020] The audio signal generation / modulation circuit is electrically connected with the MCU controller, and is used for generating and modulating an audio signal;

[0021] The power amplifier is electrically connected with the audio signal generation / modulation circuit and the sound source module, and is used for amplifying the audio signal and driving the sound source module;

[0022] The storage unit is electrically connected with the MCU controller, and is used for storing multiple groups of termite repelling audio signals and audio signal playing sequences;

[0023] The communication unit is electrically connected with the MCU controller, and is used for wireless communication and remote data transmission with the monitoring feedback module.

[0024] On the basis of the above technical solutions, preferably, in the daily patrol mode, the signal control module controls the sound source module to work by using a hierarchical timing scheduling mechanism, divides a continuous working period into macro period units and micro period units, each macro period unit is composed of a plurality of micro period units, and the frequency spectrum configuration, waveform modulation parameters and output timing of each micro period unit are dynamically adjusted through a randomization playing strategy to prevent the time domain characteristics and frequency domain characteristics of the acoustic signal from being predictable.

[0025] In the alert and drive mode, when the monitoring feedback module detects termite activity, the signal control module automatically reconstructs the driving parameters, increases the output gain of the device power amplifier within a radius of 40-60 m from the monitoring point by 40-60%, and simultaneously recombines the output sequence into a cyclic playing mode of the repelling signal, the natural enemy signal and the silent interval until the trigger pulse of the monitoring feedback module disappears.

[0026] On the basis of the above technical solutions, preferably, the randomization playing strategy specifically includes:

[0027] The signal control module allocates a group of main frequency intervals and main modulation types as the acoustic characteristic template of each macro period unit through the spectrum management mechanism, and manages the acoustic characteristic templates of 5-8 continuous macro period units to be different from each other through the historical record buffer.

[0028] In each micro period unit, the signal control module outputs 1-2 repelling signals and 1-2 natural enemy signals according to the timing arrangement logic, and inserts 2-4 silent intervals between the signal outputs.

[0029] The signal control module adjusts the number of silent intervals according to the diurnal period change, inserts 3-4 silent intervals in each macro period unit in the first time period range, inserts 2-3 silent intervals in each macro period unit in the second time period range, and the output order of adjacent macro period units is different.

[0030] On the basis of the above technical solutions, preferably, the signal control module further includes: monitoring the temperature of the power amplifier and the voltage of the functional unit in real time, and if the temperature is greater than 70 DEG C or the voltage drops by more than 10%, the silent interval is entered.

[0031] On the basis of the above technical solutions, preferably, the length of the macro period unit is 50-70 min, and the length of each micro period unit is 8-12 min; in the alert and drive mode, the playing time of the repelling signal in each cycle is 8-12 min, the playing time of the natural enemy signal is 15-25 min, and the length of the silent interval is 8-12 min.

[0032] On the basis of the above technical solutions, preferably, the monitoring feedback module includes:

[0033] The bait box is internally provided with bait material having an attracting effect on termites;

[0034] The visual sensor is arranged in the bait box and is used for monitoring the activity of termites entering the bait box;

[0035] The signal processing unit is electrically connected with the visual sensor and is used for identifying the activity characteristics of termites and generating a trigger signal;

[0036] The wireless communication unit is electrically connected with the signal processing unit and is used for sending the trigger signal to the signal control module.

[0037] The application further provides a control method of a dam termite prevention and treatment system based on audio repulsion.

[0038] S1, an audio device and a monitoring feedback module are arranged on the dam, a routine patrol mode is entered, acoustic vibration signals are periodically output and are conducted into soil medium through stainless steel ground piles, and a sustained repulsion effect on termites in the soil is formed;

[0039] S2, when the monitoring feedback module detects that termites enter the bait box, a trigger signal is sent to the audio device;

[0040] S3, after the audio device receives the trigger signal, the audio device is automatically switched to an alert and driving mode, the output intensity of the acoustic vibration signal is increased, and the output sequence is reorganized into a cyclic playing mode of the repulsion signal, the natural enemy signal and the silent interval;

[0041] S4, when the monitoring feedback module detects that the termite activity disappears, the audio device is automatically restored to the routine patrol mode.

[0042] The dam termite prevention and treatment system and method based on audio repulsion have the following beneficial effects relative to the prior art:

[0043] (1) The dam termite prevention and treatment system and method based on audio repulsion adopt an active acoustic repulsion technology, an effective protection barrier is formed before the termites approach the dam, and the technical route of the prior art of passive monitoring and lagging response is changed. The specific frequency band acoustic vibration signal emitted by the device includes a termite natural enemy bionic signal and a repulsion sensitive signal, is efficiently conducted into the soil medium through the stainless steel ground pile, continuously interferes with the vibration perception system of the termites, makes the termites produce an alert and avoidance reaction, and actively avoids the region. A plurality of devices are linearly arranged along the outer side of the dam, the sound field coverage ranges of adjacent devices overlap and connect with each other, a seamless continuous audio barrier protection belt is formed, termites can be effectively blocked from migrating into the dam interior in a large scale, the safety hidden dangers of leakage and piping caused by the termites nesting and breeding in the dam body are prevented from the source, and reliable long-term protection is provided for the water conservancy dam.

[0044] (2) Through the wireless communication linkage of the monitoring feedback device and the sound source device, the real-time perception of termite activity and the self-adaptive adjustment of protection intensity are realized, and an intelligent collaborative system of "peripheral monitoring-inside protection" is constructed. The monitoring feedback device is arranged on the side of the audio barrier in the peripheral termite source area, and the bait box body and the visual sensor are used to actively monitor the termite activity. When the invasion of termites is detected, the sound source device in the surrounding range is triggered to automatically switch to the alert and driving mode, so that the targeted strengthening driving is realized. When the termite activity disappears, the system automatically returns to the daily patrol mode to save energy. The whole process does not need manual intervention, and the closed-loop automatic control of monitoring-response-driving-recovery is realized. This intelligent response mechanism realizes the key defense when there are termites and energy-saving standby when there are no termites, which improves the reliability and timeliness of prevention and treatment, and optimizes the energy utilization efficiency. The communication unit can also report the termite activity alarm and the device running state to the remote monitoring platform, so that the management department can master the dam along the line in real time Termite threat dynamics and equipment working condition, provide data support for scientific decision-making and collaborative governance.

[0045] (3) By using the innovative hierarchical time sequence scheduling mechanism and randomization playing strategy in the daily patrol mode, the time domain characteristics and frequency domain characteristics of the acoustic signal present high unpredictability, which effectively prevents the termites from producing adaptive and habituation reactions to the fixed mode of acoustic signal through long-term exposure, ensures the long-term driving effect of the audio barrier, and overcomes the technical defects that the traditional single mode acoustic device is easy to be adapted by termites and loses effectiveness, thereby providing reliable and long-term protection for the dam.

[0046] (4) The device of the present application is powered by solar energy, and the operation cost is extremely low; the structure design is simple and firm, and the installation and disassembly are convenient. Compared with large-scale ditching, laying sandstone and other physical barrier engineering, the audio barrier is more flexible to deploy, and the initial investment and maintenance cost is low. The daily maintenance workload is very small, and only the regular cleaning of the surface of the solar panel and the checking of the battery state can ensure the long-term reliable operation of the system. In addition, compared with the traditional chemical agent prevention and treatment method, the audio barrier does not use any toxic and harmful substances, and has zero pollution to the water body and soil ecological environment, which ensures the safety of water source and does not harm the surrounding plants and animals, and meets the requirements of modern water conservancy engineering green construction and environmental protection operation. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0048] Figure 1 It is a structural schematic diagram of the dam termite prevention and treatment system of the present application.

[0049] Figure 2 This is a schematic diagram of the sound source module of the present invention;

[0050] Figure 3 This is a structural block diagram of the signal control module of the present invention;

[0051] Figure 4 This is a layout diagram of the termite control system for dikes according to the present invention.

[0052] Figure Labels

[0053] 1. Audio device; 2. Upper casing; 3. Lower casing; 4. Solar panel; 5. Monitoring and feedback module; 6. Termites; 7. Vibrator; 8. Vibrating block; 9. Ground; 10. Spiral pattern; 11. Stainless steel ground stake Detailed Implementation

[0054] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0055] like Figure 1 As shown, the present invention provides an audio-based termite control system for dams, comprising an audio device 1 and a monitoring feedback module 5, wherein the audio device 1 includes:

[0056] The protective shell, partially buried in the dam soil, includes a sealed upper shell 2 and a lower shell 3.

[0057] The sound source module, housed within the lower housing 3, is used to generate acoustic vibration signals and transmit them into the soil, thereby repelling termites 6 through acoustic vibration.

[0058] The signal control module, housed within the upper housing 2, is electrically connected to the sound source module and is used to control the working mode and sound wave output parameters of the sound source module. The working modes include a daily patrol mode and a warning and driving-away mode. The signal control module controls the sound source module to switch working modes according to the activity of the termites 6.

[0059] The power supply unit is electrically connected to the signal control module and the sound source module, and is used to provide power to the signal control module and the sound source module.

[0060] The audio device 1 is linearly arranged along the outer side of the dam, and the sound field coverage of adjacent devices overlaps and connects to form a continuous audio barrier protection zone.

[0061] The monitoring and feedback module 5 is independently deployed on the termite source area outside the audio barrier. It is connected to the signal control module and is used to monitor the activity of termites 6 in real time and feed it back to the signal control module.

[0062] This invention uses a buried vibration source to emit acoustic signals in a specific frequency band to disturb the activity of termites 6, causing them to feel uneasy and drive them away, thus forming an "audio barrier" around the dike. This prevents termites 6 from approaching and invading water conservancy projects in a green and low-cost manner. Unlike existing chemical or physical barriers, the acoustic device 1 of this system uses acoustic principles to repel termites 6, eliminating the need for pesticides or other chemicals and avoiding environmental pollution. Furthermore, the equipment is flexible in deployment, reusable, and has low overall maintenance costs. It can also be integrated with monitoring equipment.

[0063] In a specific embodiment of the present invention, such as Figure 2 As shown, the sound source module includes:

[0064] Exciter 7 is used to generate acoustic vibration signals;

[0065] The vibrating block 8 has a frustum-shaped structure and is rigidly connected to the vibration surface of the exciter 7 to receive the vibration generated by the exciter 7.

[0066] Stainless steel ground pile 11, one end is connected to vibrating block 8, and the other end is inserted into the soil, that is, below the ground surface 9, to transmit the acoustic vibration signal received by vibrating block 8 to the soil;

[0067] The exciter 7, the vibrating block 8, and the stainless steel ground pile 11 form a rigid vibration transmission chain, which transmits acoustic vibration signals to the soil medium.

[0068] Specifically, the exciter 7, as the primary acoustic signal generator, can produce frequencies ranging from 20Hz to 10000Hz to match the vibration frequency band most sensitive to the termites 6. The exciter 7 is electrically connected to a power amplifier, receiving the modulated and amplified audio drive signal. Its internal electromagnetic or piezoelectric transduction mechanism converts the electrical signal into mechanical vibration output. The vibration surface of the exciter 7 is designed as a planar or slightly convex structure to ensure close contact with the subsequent vibrating block 8 and effective force transmission.

[0069] The vibrating block 8 has a frustum-shaped structure and is made of high-rigidity metal materials such as stainless steel. Its upper surface is rigidly connected to the vibration surface of the exciter 7. The frustum-shaped geometry serves two purposes: firstly, the area of ​​the upper base of the frustum matches the vibration output surface of the exciter 7, enabling it to fully absorb all the vibration energy generated by the exciter 7; secondly, the downward-widening structure of the frustum facilitates the transfer of vibration energy. The mass and stiffness of the vibrating block 8 are optimized so that its natural frequency avoids the operating frequency band, preventing unnecessary resonance that could lead to energy waste or signal distortion.

[0070] The stainless steel ground stake 11 serves as the transmission channel for acoustic signals to ultimately enter the soil medium. Made of high-strength stainless steel, it possesses excellent corrosion resistance and rigidity, ensuring structural stability and transmission performance even after long-term burial in the soil. The ground stake has a rod-like structure, with one end fixed to the lower end face of the vibrating block 8 via a threaded connection or welding. The other end is designed with a pointed shape for easy insertion into the soil. The surface of the ground stake can be machined with helical patterns 10 or grooves to enhance mechanical engagement with the surrounding soil, ensuring efficient transmission of vibrational energy to soil particles rather than slippage loss at the contact interface. The length of the ground stake is determined based on soil type and target depth, typically ranging from 30cm to 80cm, allowing it to penetrate the loose topsoil and directly inject acoustic vibrations into the soil depth range where termites 6 may be active. When the vibrator 7 is working, the mechanical vibration generated is first transmitted to the vibrating block 8. The vibrating block 8 receives and gathers this vibration energy and then transmits it to the stainless steel ground pile 11 through its rigid connection interface with the ground pile. The ground pile then injects the vibration energy into the soil medium through its large-area contact with the soil, forming an acoustic wave field that spreads outward from the device.

[0071] The acoustic vibration signals output by the sound source module include two frequency bands with different mechanisms of action. The first type is the signal from termite predators, with a frequency range of 250Hz-750Hz. Experimental studies have shown that this frequency band can simulate the sound characteristics of termite predators. When termites (6) detect this type of acoustic signal through their highly sensitive vibration sensing system, they will produce an alarm and avoidance response, similar to the instinctive behavioral response when sensing the presence of predators in the natural environment. Because low-frequency sound waves have a longer wavelength and less attenuation in soil, the predator signal in this frequency band can propagate over a long distance in the soil, with an effective range of about 10m, thus creating a continuous psychological deterrent to termites (6) over a large area. The second type is the repellency signal, with a frequency range of 2000Hz-10000Hz. This frequency band is a sensitive frequency range that has a significant interference effect on the termite (6) sensing system, selected through a series of experiments. High-frequency acoustic signals can directly interfere with the vibrational communication and environmental perception capabilities of termites (Termite 6), causing them discomfort and even physiological stress responses, resulting in a more direct and significant repellent effect. Although the propagation distance of high-frequency signals in soil is relatively short, with an effective range of approximately 0.5m-3m, its strong repellent effect makes it an effective means of close-range defense. By using a signal control module to output acoustic signals from the two frequency bands according to a specific timing combination and power ratio, the synergistic repellent effect of the two types of signals can be maximized. If necessary, signals from other frequency bands can be superimposed to extend the interference effect on termites (Termite 6) and other dam-damaging animals.

[0072] In a specific embodiment of the present invention, such as Figure 3As shown, the signal control module is responsible for the driving control of the sound source module, the management of the working mode, the processing of the feedback information, and the remote communication, etc. The module is contained in the inside of the device upper shell 2, and is usually installed in a separate information box to realize circuit protection and electromagnetic shielding. The signal control module mainly consists of an MCU controller, an audio signal generation / modulation circuit, a power amplifier, a storage unit and a communication unit, and the components work cooperatively through electrical connection to realize accurate control and intelligent management of the acoustic vibration signal.

[0073] The MCU controller, as the central processing unit of the signal control module, mainly functions to execute the preset control logic program, process the trigger signal from the monitoring feedback module 5, manage the working mode switching, coordinate the timing of the functional circuits, and monitor the system running state, etc. The MCU controller is used to execute the control logic and process the feedback information, mainly including establishing data communication with the audio signal generation / modulation circuit, the communication unit and the storage unit through the general input / output interface, collecting the state parameters such as temperature and voltage of the power supply unit in real time through the analog-to-digital conversion interface, and sending control instructions to the power amplifier through the digital signal output interface.

[0074] The audio signal generation / modulation circuit is electrically connected with the MCU controller, and generates corresponding analog audio signals according to the frequency instructions, modulation parameters and amplitude settings issued by the MCU controller. In addition, the circuit also has the function of waveform modulation, which can perform amplitude modulation, frequency modulation or pulse width modulation on the basic sine wave, so as to generate complex acoustic signals with specific time domain and frequency domain characteristics. The generated audio signals are output to the power amplifier after filtering and pre-amplification processing.

[0075] The input end of the power amplifier is electrically connected with the audio signal generation / modulation circuit, and the output end is electrically connected with the exciter 7 in the sound source module. The main function of the power amplifier is to amplify the weak audio signal output by the audio signal generation / modulation circuit, and provide sufficient current and voltage to drive the exciter 7 to generate mechanical vibration of the required intensity. In the daily patrol mode, the power amplifier works in the medium gain state, and outputs a moderate intensity driving signal to maintain the basic audio barrier effect and take into account the energy consumption control; in the alert and driving mode, the output gain of the power amplifier can be increased by 40% to 60% according to the control instructions, so as to drive the sound source module to generate stronger acoustic vibration signals to achieve enhanced repelling effect.

[0076] The storage unit is electrically connected with the MCU controller, and provides data storage and program storage functions for the signal control module, including the playing order of termite natural enemy signals, repellent signals, audio signals in different frequency ranges, and various modulation parameter configurations, etc. These audio signal data are stored in the form of digital wave table or parameter list, and the MCU controller can read the corresponding waveform data from the storage unit and deliver it to the audio signal generation / modulation circuit for playing during operation. With the support of the data in the storage unit, the signal control module can realize a variety of acoustic output modes and ensure the strategy diversity in long-term operation.

[0077] The communication unit is electrically connected with the MCU controller, and is responsible for information interaction between the device and external systems. The communication unit mainly realizes two communication functions: one is to perform wireless communication with the independently arranged monitoring feedback module 5, receive the termite 6 activity trigger signal sent by the monitoring feedback module 5, and report to the MCU controller; the other is to perform data transmission with the remote monitoring platform, and report device operation status, termite 6 activity alarm information, system working log and other information, and receive parameter configuration instructions or control commands issued by the remote management platform. After receiving the termite 6 activity trigger pulse sent by the monitoring feedback module 5, the communication unit immediately delivers the signal to the MCU controller, triggering the switching of the working mode and the adjustment of the repellent strategy.

[0078] The signal control module realizes two main working modes through the cooperative work of the above-mentioned components: daily patrol mode and alarm driving mode. In the daily patrol mode, the signal control module uses a hierarchical time scheduling mechanism to manage the output of the sound source module. The continuous working time is divided into multiple levels of cycle units, and the acoustic signal characteristics in each cycle unit are dynamically adjusted through a randomization strategy, so as to prevent the termites 6 from adapting to the acoustic environment. Specifically, the mechanism divides the continuous working period into two levels of macro cycle units and micro cycle units, and each macro cycle unit is sequentially composed of a plurality of micro cycle units. In a preferred embodiment, the time length of the macro cycle unit is set to 50-70 minutes, preferably 60 minutes; the time length of each micro cycle unit is set to 8-12 minutes, preferably 10 minutes. In this way, a macro cycle unit usually contains 5-7 micro cycle units, preferably 6 micro cycle units. The hierarchical time scheduling mechanism gives the signal control module the dual ability of macroscopic planning and microscopic arrangement of acoustic output.

[0079] At the macro-cycle unit level, the signal control module allocates a set of acoustic feature templates for each macro-cycle unit through the spectrum management mechanism, which defines the main frequency range and the main modulation type of the acoustic signal in the macro-cycle. For example, the feature template of a certain macro-cycle unit can be set as "main frequency band 250-400 Hz with pulse modulation", while the feature template of the next macro-cycle unit can be "main frequency band 500-750 Hz with continuous sinusoidal wave", and the next macro-cycle can be "sweep signal with main frequency band 2000-4000 Hz", etc. The signal control module ensures that the acoustic feature templates of the continuous 5-8 macro-cycle units are different through the historical record buffer management mechanism, avoiding the repetition of the spectrum mode in the short term, and preferably 6 macro-cycle units. This macro-level diversity makes it difficult for termites 6 to form a habituation response to a specific acoustic mode when exposed to an audio barrier environment for a long time, maintaining the persistence of the acoustic repellent effect. The acoustic feature template of the macro-cycle unit is dynamically selected from the template library stored in the storage unit by the MCU controller, and the selection process can introduce a pseudo-random number generation mechanism, using the current date, site identification code, and historical trigger records of the monitoring feedback module 5 as random seeds to generate unpredictable template selection sequences and record them in the working log for subsequent reproduction and analysis.

[0080] At the micro-cycle unit level, the signal control module outputs several segments of different types of acoustic signals and silent intervals in each micro-cycle according to the timing arrangement logic, forming the specific playback content of the micro-cycle. The timing arrangement logic follows the acoustic feature template framework of the current macro-cycle unit, specifically arranging the playback sequence within the frequency range and modulation type defined by the template. A typical micro-cycle unit contains 1-2 segments of repellent signal playback, 1-2 segments of natural enemy signal playback, and 2-4 segments of silent interval insertion. Repellent signals have a direct interference effect on the vibration perception system of termites 6, and each segment usually lasts for 1-3 minutes. Natural enemy signals simulate the active acoustic characteristics of termite enemies, and each segment usually lasts for 2-5 minutes. Silent intervals refer to the period when the sound source module completely stops outputting, and each silent interval usually lasts for 1-3 minutes. The introduction of silent intervals has a dual effect: on the one hand, it can significantly reduce the average power consumption of the system, prolong the battery life and reduce the heat accumulation of the power amplifier; on the other hand, the intermittent sound output mode breaks the rhythm of the continuous sound field, making termites 6 unable to predict the occurrence time and characteristics of the next acoustic signal, enhancing the uncertainty of the repellent effect and preventing adaptation.

[0081] The signal control module also dynamically adjusts the number and distribution of the silent intervals according to the diurnal period, further enhancing the complexity of the randomized playing strategy. The termite 6 activity has a circadian rhythm, and is usually more frequent at night and early morning. The signal control module obtains the current time through the built-in real-time clock circuit, and divides 24h into two time period ranges: the first time period range is usually set as the daytime period such as 5:00 to 17:00, and the second time period range is the nighttime period such as 17:00 to 5:00 the next day. In the first time period range, since the termite 6 activity is relatively less, the signal control module appropriately increases the silent intervals to save energy, and inserts 3-4 silent intervals in each macrocycle unit; in the second time period range, the termite 6 activity is more active, and the signal control module correspondingly reduces the number of silent intervals to enhance the repellent intensity, and inserts 2-3 silent intervals in each macrocycle unit. In addition, in order to avoid forming a predictable playing rhythm between adjacent macrocycle units, the output order of adjacent macrocycle units is different, that is, the arrangement order of the repellent signal, the natural enemy signal and the silent interval on the time axis changes in each macrocycle. The comprehensive effect of this multi-level and multi-parameter randomized playing strategy makes the time domain characteristics and frequency domain characteristics of the acoustic signal present high unpredictability, effectively preventing the adaptive response of the termite 6 through long-term exposure.

[0082] In order to ensure the safe and reliable operation of the system, the signal control module also integrates real-time state monitoring and adaptive protection mechanism. The MCU controller continuously monitors the temperature of the power amplifier and the voltage of the functional units. When the temperature of the power amplifier exceeds 70℃, it indicates that the circuit cooling is poor or the load is too heavy, and the MCU controller immediately instructs the system to enter the silent interval to suspend the driving of the sound source module to reduce power consumption and heat dissipation pressure, and then restore normal work when the temperature falls to the safe range. When the battery voltage drops by more than 10%, it indicates that the energy storage is insufficient or the energy supply system is abnormal, and the MCU controller also triggers a protective silence to avoid excessive discharge causing battery damage or system key function failure. These adaptive protection mechanisms ensure the long-term reliability of the device under various environmental conditions and operating conditions.

[0083] In a specific embodiment of the present application, the monitoring feedback module 5, which can be selected as an intelligent termite 6 monitoring pile, is mainly used for real-time monitoring of termite 6 activity on the side of the termite source area outside the audio barrier, and sends a trigger signal to the signal control module of the audio device 1 in time when termite 6 approaches or invades, so as to start the enhanced repellent response mechanism. The monitoring feedback module 5 is independently arranged separately from the audio device 1, and establishes information interaction with the audio device 1 through wireless communication, forming a cooperative linkage defense system of "peripheral monitoring-inside protection". The monitoring feedback module 5 mainly consists of a bait box body, a visual sensor, a signal processing unit and a wireless communication unit, and the components work cooperatively to realize the automatic identification and alarm transmission functions of termite 6 activity.

[0084] The inside of the bait box is placed with bait materials with strong attraction to termites 6, such as pine blocks, paperboard, cellulose powder, etc., and if necessary, a trace amount of termite 6 pheromone or sugar substances can be added to enhance the trapping effect, and when termites 6 are detected to enter the box and eat the bait, a corresponding driving response is triggered. By counting the frequency and duration of termites 6 appearing in the nearby bait box, the frequency of termite 6 activity or the size of the colony is determined, and the strength of the subsequent driving strategy is determined.

[0085] The visual sensor is responsible for real-time monitoring and image collection of the activity of termites 6 inside the bait box. The visual sensor usually uses a small camera module, equipped with an infrared fill light or near-infrared LED light source, which can clearly capture the activity of termites 6 in the box even in insufficient light or complete darkness.

[0086] The signal processing unit is electrically connected with the visual sensor, and is the data analysis and decision center of the monitoring feedback module 5. The signal processing unit can analyze and process the image data transmitted by the visual sensor in real time, and when the signal processing unit confirms that termites 6 are active in the box, it immediately generates a trigger signal and transmits it to the wireless communication unit for transmission. The trigger signal usually contains data such as the unique identification code of the monitoring device, the trigger timestamp, the number of termites 6, and the geographic location information, which provides detailed basis for subsequent repellent response and data analysis.

[0087] The wireless communication unit is electrically connected with the signal processing unit, and is responsible for quickly and reliably transmitting the trigger signal to the signal control module of the audio device 1. The wireless communication unit also supports data communication between the device and the external management platform, the built-in SIM card wide-area communication module is used to upload device status and alarm information to the remote monitoring platform, the local-area communication module is used for short-range wireless networking, and the Beidou / GPS module is used to obtain the geographic location of the equipment. With these communication functions, management personnel can monitor the operation of each device and the surrounding termite situation in real time, and realize the coordinated linkage of multiple devices for prevention and control.

[0088] When the monitoring feedback module 5 detects signs of termite 6 activity, an alarm signal can be transmitted to the signal control module and the remote management terminal through the wireless communication unit, triggering the device to automatically increase the sound wave output (increase the volume or change the frequency spectrum combination) to enhance the driving effect. If no termite 6 activity is detected for a long time, the control module can reduce the power consumption to put the device into standby patrol mode, maintaining low-frequency intermittent sound output to save energy.

[0089] In a specific embodiment of the present application, the power supply unit includes a solar panel 4, a battery pack, etc. The solar panel 4 is installed at the top end of the upper shell 2, which converts light energy into electrical energy to charge the internal battery. During the day, the battery is charged, and at night or on rainy days, the battery is powered to ensure long-term continuous operation of the device.

[0090] In one specific embodiment of the present invention, the protective housing provides physical protection and installation space for internal functional components such as the sound source module, signal control module, and power supply unit. The protective housing adopts a split design, consisting of an upper housing 2 and a lower housing 3, which are assembled into a complete enclosed cavity through a sealed connection. The housing is waterproof and dustproof, achieving IP67 / IP68 protection levels, capable of withstanding rain, water immersion, and harsh outdoor environments (such as prolonged sun exposure and extreme temperature changes). The housing material is resistant to UV aging and corrosion, making it suitable for long-term burial in dam soil without damaging internal electronic components.

[0091] like Figure 4 As shown, in practical applications, the placement and spacing of multiple audio devices 1 can be planned according to the length of the dam and the distribution of termite threats. Several predetermined installation pits are dug along the outer side of the dam (at the boundary between the termite source area and the termite-infested area), and the lower shell 3 of the audio device 1 of this invention is buried and fixed in the soil. The upper shell 2 and the top solar panel are usually slightly above the ground surface to ensure sufficient sunlight. The spacing between each device is determined based on the sound field coverage radius, ensuring that the effective sound field areas of adjacent devices overlap and connect, thereby forming a continuous and seamless audio barrier around the dam. A typical deployment scheme is to install one device every 10m (the actual distance can be determined by field testing), forming multiple rows of sound wave defense lines along the outer edge of the dam section that needs protection. For the two ends of the dam or special terrain locations, the arrangement can be denser to prevent sound field gaps. The monitoring feedback module 5 is an intelligent termite monitoring stake, linearly distributed around the perimeter of the sound barrier (on the termite source area side), similar to the audio device 1. Each device is spaced 20 meters apart. It uses built-in visual sensors to monitor termite entry and determine nearby termite activity. After installation, the control module configures and debugs all units to ensure that parameters such as sound source frequency band, sound intensity, and monitoring thresholds match site requirements. The devices can network via built-in communication modules for synchronized operation and information sharing. For example, if a device in a certain area detects a significant increase in termite activity, it can notify neighboring devices to raise the alert level (increase sound output power and change frequency mode) to form a coordinated defense. Managers can also view the status and monitoring data of each device through a remote monitoring platform and manually adjust equipment parameters or deployment strategies as needed. Furthermore, this device can be used in conjunction with other termite control measures. For example, the audio barrier can be used as the first line of defense, supplemented by a small number of traps or chemical baits to eliminate any termites that breach the audio barrier. This forms a comprehensive prevention and control system of "avoidance + monitoring + extermination", further ensuring the safety of the dikes.

[0092] This invention also provides a control method for an audio-based termite control system for dams, comprising the following steps:

[0093] S1, set the audio device 1 and the monitoring feedback module 5 on the dam, enter the daily patrol mode, periodically output acoustic vibration signals and conduct them into the soil medium through the stainless steel ground pile 11, and form a persistent repelling effect on the termites 6 in the soil;

[0094] S2, when the monitoring feedback module 5 detects that the termites 6 enter the bait box, a trigger signal is sent to the audio device 1;

[0095] S3, after the audio device 1 receives the trigger signal, it automatically switches to the alert and repelling mode, increases the output intensity of the acoustic vibration signal, and reorganizes the output sequence into a cyclic playing mode of the repelling signal, the natural enemy signal and the silent interval;

[0096] S4, when the monitoring feedback module 5 detects that the termites 6 activity disappears, the audio device 1 automatically restores to the daily patrol mode.

[0097] Specifically, in actual application, first, according to the length of the dam and the distribution of termite 6 threat, the audio device 1 is arranged along the line at the junction of the ant source area and the ant damage area outside the dam to form an audio barrier belt. At the same time, the monitoring feedback device is linearly arranged on the ant source area side of the audio barrier periphery. After the device is installed and the parameter configuration is completed, the system automatically enters the daily patrol mode and starts running. In the daily patrol mode, the signal control module uses a hierarchical time sequence scheduling mechanism to periodically drive the sound source module to work, and outputs acoustic vibration signals according to the preset random playing strategy. The mechanical vibration generated by the exciter 7 is transmitted to the stainless steel ground pile 11 through the vibration block 8, the ground pile injects vibration energy into the soil medium to form a sound vibration wave field that spreads around, and forms a persistent repelling effect on the termites 6 that may be active in the soil. The daily patrol mode adopts intermittent low-intensity output method, which maintains the basic audio barrier effect while taking into account energy consumption and equipment life, and the controller maintains the protection state with low power consumption.

[0098] When the visual sensor of the monitoring feedback device detects the termites 6 entering the bait box, the signal processing unit immediately identifies the activity characteristics of the termites 6 and generates a trigger signal, which is sent to the signal control module of the audio device 1 in the vicinity through the wireless communication unit. After receiving the trigger signal, the signal control module of the audio device 1 automatically determines whether the device is located within a radius of 40-60 meters from the trigger monitoring point. For devices within the response range, the control module immediately executes the working mode switching, automatically switching from the daily patrol mode to the alert and driving mode. In the alert and driving mode, the signal control module performs driving parameter reconstruction operation, instructing the power amplifier to increase the output gain by 40-60% based on the original gain, so that the mechanical vibration output of the exciter 7 is stronger, and the output sequence of the acoustic signal is reorganized from the randomization playing strategy in the daily mode to the driving cycle playing mode. This mode adopts a three-section cycle playing structure of repelling signal, natural enemy signal and silence interval, to maximize the interference and drive away the invading termite 6 group. The start of the alert and driving mode is also accompanied by the communication unit reporting the termite 6 activity warning information to the remote monitoring platform, reminding the operation and management personnel to pay attention to the development of the termite situation.

[0099] The system continues to run in the alert and driving mode, and the monitoring feedback device continues to monitor the activity of the termites 6. When the visual sensor does not detect the activity of the termites 6 for a period of time, it indicates that the invading termite 6 group has been successfully driven away, and the monitoring feedback device stops sending the trigger signal. After the signal control module of the audio device 1 detects the disappearance of the trigger pulse of the monitoring feedback device, it determines that the driving task is completed, and automatically restores the working mode from the alert and driving mode to the daily patrol mode. The output gain of the power amplifier returns to the normal level, and the output sequence reuses the randomization playing strategy to reduce energy consumption and prolong the service life of the device. The whole control process realizes an automatic closed-loop control mechanism of monitoring-triggering-driving-restoring, which can respond to the invasion of termites 6 in a timely and effective manner without manual intervention, ensuring that the dam audio barrier protection system is always in the best working state.

[0100] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A termite control system for dikes based on audio repellency, characterized in that, It includes an audio device and a monitoring feedback module, wherein the audio device includes: The protective shell, partially buried in the dam soil, consists of a sealed upper shell and a lower shell. The sound source module, housed within the lower casing, is used to generate acoustic vibration signals and transmit them into the soil, thereby repelling termites through acoustic vibration. The signal control module, housed within the upper housing, is electrically connected to the sound source module and is used to control the working mode and sound wave output parameters of the sound source module. The working modes include a daily patrol mode and a warning and driving-away mode. The signal control module controls the sound source module to switch working modes according to the termite activity. The power supply unit is electrically connected to the signal control module and the sound source module, and is used to provide power to the signal control module and the sound source module. The audio devices are linearly arranged along the outside of the dam, and the sound field coverage of adjacent devices overlaps and connects to form a continuous audio barrier protection zone. The monitoring and feedback module is independently deployed on the termite source area outside the audio barrier. It is connected to the signal control module and is used to monitor termite activity in real time and feed it back to the signal control module.

2. The termite control system for dikes based on audio repellency as described in claim 1, characterized in that, The sound source module includes: A vibrator is used to generate acoustic vibration signals. The vibrating block has a frustum-shaped structure and is rigidly connected to the vibration surface of the exciter to support the vibration generated by the exciter. Stainless steel ground stakes, with one end connected to a vibrating block and the other end inserted into the soil, are used to transmit the acoustic vibration signals received by the vibrating block to the soil. The exciter, vibrating block, and stainless steel ground pile form a rigid vibration transmission chain, transmitting acoustic vibration signals to the soil medium.

3. The termite control system for dikes based on audio repellency as described in claim 1, characterized in that, The acoustic vibration signals include enemy signals and avoidance signals. The frequency of the enemy signals is 250-750Hz, and the frequency of the avoidance signals is 2000Hz-10000Hz.

4. The termite control system for dikes based on audio repellency as described in claim 1, characterized in that, The signal control module includes: The MCU controller is used to execute control logic and process feedback information; An audio signal generation / modulation circuit, electrically connected to the MCU controller, is used to generate and modulate audio signals; The power amplifier, electrically connected to the audio signal generation / modulation circuit and the sound source module, is used to amplify the audio signal and drive the sound source module; The storage unit, electrically connected to the MCU controller, is used to store multiple sets of ant-repelling audio signals and the playback order of the audio signals; The communication unit, electrically connected to the MCU controller, is used for wireless communication and remote data transmission with the monitoring feedback module.

5. The termite control system for dikes based on audio repellency as described in claim 1, characterized in that, In the daily patrol mode, the signal control module adopts a hierarchical timing scheduling mechanism to control the operation of the sound source module. The continuous working cycle is divided into macro-cycle units and micro-cycle units. Each macro-cycle unit is composed of several micro-cycle units. The spectrum configuration, waveform modulation parameters and output timing of each micro-cycle unit are dynamically adjusted through a randomized playback strategy to prevent the time domain characteristics and frequency domain characteristics of the acoustic signal from becoming predictable. In the warning and driving-away mode, when the monitoring feedback module detects termite activity, the signal control module automatically reconstructs the driving parameters, increases the output gain of the device power amplifier within a 40-60m radius of the monitoring point by 40-60%, and reassembles the output sequence into a loop playback mode of repelling signals, predator signals, and silent intermittents until the trigger pulse of the monitoring feedback module disappears.

6. The termite control system for dikes based on audio repellency as described in claim 5, characterized in that, The randomized playback strategy specifically includes: The signal control module allocates a set of main frequency ranges and main modulation types as acoustic feature templates for each macrocycle unit through a spectrum management mechanism, and manages the acoustic feature templates of 5-8 consecutive macrocycle units to be different through historical record buffer management. Within each microcycle unit, the signal control module outputs 1-2 segments of avoidance signals and 1-2 segments of predator signals according to the timing arrangement logic, and inserts 2-4 segments of silence intervals between the signal outputs. The signal control module adjusts the number of silent intervals according to the changes in day and night. In the first time period, 3-4 silent intervals are inserted into each macrocycle unit, and in the second time period, 2-3 silent intervals are inserted into each macrocycle unit, and the output order of adjacent macrocycle units is different.

7. The termite control system for dikes based on audio repellency as described in claim 6, characterized in that, The signal control module also includes: real-time monitoring of the power amplifier temperature and the voltage of the functional units; if the temperature is greater than 70°C or the voltage drops by more than 10%, it will enter a silent interval.

8. The termite control system for dikes based on audio repellency as described in claim 5, characterized in that, The duration of the macro-cycle unit is 50-70 min, and the duration of each micro-cycle unit is 8-12 min. In the alert and drive-away mode, the playback duration of the drive-away signal in each cycle is 8-12 min, the playback duration of the predator signal is 15-25 min, and the duration of the silent interval is 8-12 min.

9. The termite control system for dikes based on audio repellency as described in claim 1, characterized in that, The monitoring feedback module includes: The bait box contains bait material that attracts termites. A visual sensor, installed inside the bait box, is used to monitor the activity of termites entering the bait box; The signal processing unit, electrically connected to the visual sensor, is used to identify termite activity characteristics and generate trigger signals; The wireless communication unit is electrically connected to the signal processing unit and is used to send trigger signals to the signal control module.

10. A control method for a termite control system for dikes based on audio repulsion as described in any one of claims 1-9, characterized in that: The control method includes the following steps: S1. Install an audio device and a monitoring feedback module on the dam to enter the daily patrol mode. Periodically output acoustic vibration signals and transmit them to the soil medium through stainless steel piles to form a continuous repellent effect on termites in the soil. S2. When the monitoring feedback module detects that termites have entered the bait box, it sends a trigger signal to the audio device. S3. After receiving the trigger signal, the audio device automatically switches to the alarm and drive-away mode, increases the output intensity of the acoustic vibration signal, and reorganizes the output sequence into a loop playback mode of drive-away signal, predator signal and silent interval. S4. When the monitoring feedback module detects the disappearance of termite activity, the audio device automatically returns to the daily patrol mode.

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