A dish type light concentration based photothermal synergic high-temperature insect killing device and method

Abstract

The application discloses a kind of photothermal synergic high-temperature insect killing device and method based on dish type condensing, including dish type condensing mirror;Cavity type heat collection and killing assembly is arranged in focal region, and heat absorption cavity is formed in it;Light guide moth attracting component includes light guide cone and induction scattering ring, the input end of light guide cone extends to focal region, and output end is connected with induction scattering ring, induction scattering ring is arranged outside the entrance of cavity type heat collection and killing assembly, for scattering exported sunlight and forming moth attracting light field;Bionic light modulation system includes pulse LED light source, micro photovoltaic power supply module and microcontroller, and bionic optical modulation dynamic moth attracting algorithm is stored in microcontroller memory, generates auxiliary moth attracting light field of dynamic change, auxiliary moth attracting light field and the moth attracting light field formed by induction scattering ring are superposed, and act on target pest together.Solve the problems of low energy efficiency, frequent maintenance and easy to decay of insect attracting efficiency of existing solar insect killing device, improve the energy efficiency ratio and reliability of solar insect killing.

Description

Technical Field

[0001] This invention belongs to the field of solar thermal utilization and physical control of agricultural pests, and particularly relates to a photothermal synergistic high-temperature pest control device and method based on dish-type light concentration. Background Technology

[0002] Currently, the main methods for controlling agricultural and public health pests such as mosquitoes, flies, and horseflies fall into three categories: chemical spraying, electric insecticidal lamps, and sticky traps. While chemical pesticides are fast-acting, long-term use can lead to pesticide resistance in pests and pollute soil, water sources, and non-target organisms, which is inconsistent with the trend of green agriculture. Traditional electric insecticidal lamps rely on mains power or batteries, resulting in high deployment costs in remote areas and posing a risk of electric shock. Furthermore, their high-voltage grids are prone to short-circuiting and failure due to the accumulation of dead insects, requiring frequent maintenance.

[0003] Current solar-powered insecticidal lamps generally adopt a technical approach of "photovoltaic panels + batteries + insect-attracting lamps + high-voltage power grid". This model has significant drawbacks: solar photovoltaic power generation efficiency is low, and energy needs to undergo multiple conversions from light to electricity and back to light or electricity, resulting in significant losses. Batteries have a limited charge-discharge cycle life, requiring periodic replacement, which increases maintenance costs and environmental burden. Furthermore, high-voltage electric shocks are ineffective at killing larger flying insects, often resulting in insects with missing limbs or not completely dead, affecting the control effect.

[0004] On the other hand, dish solar concentrators are known for their high concentration ratios, ranging from hundreds to thousands of times, creating high-temperature zones exceeding 500°C at the focal point. They are widely used in Stirling power generation and industrial heating. However, current technologies have not yet directly and efficiently applied this high-intensity solar thermal energy to the field of biological inactivation, particularly lacking innovative structural designs that combine strong light heat collection with weak light insect attraction, thus failing to fully realize the potential of solar energy in physical pest control. Summary of the Invention

[0005] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a high-temperature insecticidal device and method based on dish-type concentrating photothermal synergy. By combining the photothermal conversion of dish-type concentrating with biomimetic light modulation based on critical fusion frequency, the invention solves the problems of low energy efficiency, frequent maintenance and easy decay of insect-attracting efficiency of existing solar insecticidal devices, thereby improving the energy efficiency ratio and reliability of solar insecticidal devices.

[0006] Technical solution: To achieve the above objectives, the present invention provides a high-temperature insecticidal device based on dish-type concentrating photothermal synergy, comprising:

[0007] A disc-shaped condenser is used to focus sunlight onto its focal area;

[0008] The cavity-type heat-collecting and insect-killing assembly is set in the focal area by a cavity assembly support frame connected to the dish-type concentrator, and a heat-absorbing cavity is formed inside it to absorb the concentrated solar energy and create a high-temperature lethal environment.

[0009] The light-guided insect-attracting component includes a light-guided cone and an induced scattering ring. The tip of the light-guided cone extends to the focal region as an input end to receive part of the sunlight, and its bottom end is connected to the induced scattering ring as an output end. The induced scattering ring is located outside the insect inlet of the cavity-type heat-collecting insect-killing assembly and is used to scatter the exported sunlight to form an insect-attracting light field.

[0010] The biomimetic light modulation system includes a pulsed LED light source disposed on the induced scattering ring, a micro photovoltaic power supply module for powering the pulsed LED light source, and a microcontroller. The microcontroller stores a biomimetic optical modulation dynamic insect-attracting algorithm, which is used to output a pulse width modulation signal to drive the pulsed LED light source according to the visual characteristics of the target pest, so as to generate a dynamically changing auxiliary insect-attracting light field. This auxiliary insect-attracting light field is superimposed with the insect-attracting light field formed by the induced scattering ring, and together they act on the target pest.

[0011] Furthermore, the cavity-type heat collection and insect-killing assembly also includes an inverted cone-shaped insect inlet, an insect-falling channel, and a vacuum insulation layer;

[0012] The inlet of the cavity-type heat collection and insect killing assembly is the inverted cone-shaped inlet. The light guide cone is connected to the inverted cone-shaped inlet through the light guide cone support frame. The inverted cone-shaped inlet is located at the top of the heat absorption cavity, and its inner wall is a smooth reflective surface to guide pests into it.

[0013] The insect discharge channel is located at the bottom of the heat-absorbing cavity and is coaxially connected with the inverted conical insect inlet, used to discharge the remains of pests that have been killed by high temperature.

[0014] The vacuum insulation layer covers the outer wall of the heat-absorbing cavity.

[0015] Furthermore, the light guide cone is made of high-temperature resistant quartz material, with its input end extending into the high-temperature zone inside the heat-absorbing cavity, its output end located outside the inverted conical insect inlet, and the side of the light guide cone has a micro-frosted structure for converting the output strong light into diffused light.

[0016] Furthermore, the surface of the induced scattering ring is coated with a diffuse reflection coating, the response band of which covers the phototactic sensitive band of the target pest.

[0017] Furthermore, the micro photovoltaic power supply module is connected to the cavity-type heat collection and insect-killing assembly via a ceramic heat insulation bracket, and the microcontroller is integrated into the bottom of the cavity-type heat collection and insect-killing assembly.

[0018] Furthermore, the biomimetic optical modulation dynamic insect-attracting algorithm is as follows: based on the critical fusion frequency of the compound eye of the target pest, at least two different pulse modulation modes are generated, and the pulse LED light source is controlled to cycle between the high-frequency stimulation mode and the low-frequency breathing mode to overcome the visual fatigue of the pest.

[0019] A photothermal synergistic high-temperature insecticidal method based on a dish-type concentrator includes the following steps:

[0020] Step S1: Use a dish-type concentrator to focus sunlight onto the focal area to generate high-temperature heat energy. At the same time, use a light guide cone to guide some of the sunlight from the focal area and scatter it through an induced scattering ring to form the first insect-attracting light field.

[0021] Step S2: The microcontroller starts the bionic optical modulation algorithm to generate a pulse width modulation signal according to the visual characteristics of the target pest, and drives the pulse LED light source to generate a dynamically changing second insect-attracting light field. The second insect-attracting light field and the first insect-attracting light field are superimposed in space to form a composite dynamic insect-attracting light field to lure pests into the cavity-type heat collection and insect-killing assembly.

[0022] Step S3: After the pests enter the heat-absorbing cavity of the hollow heat-collecting and insect-killing assembly, they are instantly killed by the high-temperature heat energy. The remains after being killed are discharged through the insect-falling channel under the action of gravity and hot air flow.

[0023] Furthermore, the biomimetic optical modulation dynamic insect-attracting algorithm in step S2 specifically includes:

[0024] Based on the target pest species, a high-frequency stimulation frequency f is set that matches the critical fusion frequency of its compound eyes. H ;

[0025] In the first time period T H The inner part is a high-frequency stimulation mode, with the high-frequency stimulation frequency f. H It outputs a pulse width modulation signal with a constant duty cycle to drive a pulsed LED light source to generate a high-frequency, strong-stimulation light field;

[0026] In the second period T that followed L Inside, it switches to low-frequency breathing mode and outputs a pulse width modulation signal with a periodic and continuous change in duty cycle to drive the pulsed LED light source to generate a low-frequency bionic breathing light field with a frequency of 1Hz to 2Hz.

[0027] The high-frequency stimulation mode and the low-frequency breathing mode are executed alternately in a cycle.

[0028] Furthermore, the high-frequency stimulation frequency f H Based on the target pest species, the following settings are made:

[0029] When the target pest is a mosquito or horsefly, f H Set to 45-55Hz;

[0030] When the target pest is a fly, f H Set to 65-80Hz;

[0031] When the target pest is a moth, f H Set to 30-40Hz.

[0032] Furthermore, in step S3, the temperature inside the heat-absorbing cavity reaches 300-600°C due to the convergence of sunlight, causing the proteins of the pests to denature and the tissues to carbonize instantly upon entering; at the same time, the air inside the heat-absorbing cavity forms an upward hot airflow, generating a chimney effect, which helps to expel the carbonized pest remains.

[0033] Beneficial effects: This invention uses a dish-type concentrator to focus sunlight at a high magnification to the focal area. The cavity-type heat-collecting and insect-killing assembly absorbs the light energy and converts it into high-temperature heat energy of 300~600℃, creating an instantaneous lethal environment. The light guide cone directs part of the light energy from the focal area to the induction scattering ring, forming a passive insect-attracting light field. At the same time, the microcontroller drives the pulsed LED light source to cycle between high-frequency stimulation mode and low-frequency breathing mode according to the critical fusion frequency of the compound eyes of the target pest, generating a dynamic biomimetic auxiliary light field. This light field is superimposed with the passive light field to form a composite dynamic insect-attracting light field, which significantly improves the insect-attracting efficiency and overcomes the visual fatigue of pests. After being lured into the heat-absorbing cavity, the pests are instantly carbonized and inactivated. The remains are automatically discharged through the insect-falling channel under the action of gravity and the chimney effect of the hot airflow. The entire device requires no external power supply, no chemical agents, and no manual cleaning, achieving fully automated operation from insect attraction and extermination to self-cleaning. Its energy utilization efficiency is significantly improved compared to traditional solar-powered insecticidal lamps, and the maintenance frequency is reduced to once per quarter. It completely solves the shortcomings of existing technologies such as low energy efficiency, reliance on batteries, frequent maintenance, easy decay of insect attraction efficiency, and incomplete extermination. It provides an efficient and reliable solution for green pest control in outdoor scenarios, and is particularly suitable for green pest control in outdoor scenarios such as farmland, pastures, orchards, and ecological parks without power grid coverage. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of a photothermal synergistic high-temperature insecticidal device.

[0035] Figure 2 This is a schematic diagram of the cavity-type heat collection and insecticidal assembly.

[0036] Figure 3 This is a schematic diagram of the cavity-type heat collection and insect-killing assembly and the light-guided insect-attracting component in the insect-killing state.

[0037] Figure 4 This is a schematic diagram of the insect-attracting process. Detailed Implementation

[0038] The invention will now be further described with reference to the accompanying drawings.

[0039] like Figure 1 and Figure 2 As shown, a high-temperature insect-killing device based on dish-type concentrators and photothermal synergy includes: a dish-type concentrator 4, used to concentrate sunlight to its focal region; a cavity-type heat-collecting insect-killing assembly 2, which is supported by a cavity assembly support frame 3 connected to the dish-type concentrator 4 and disposed in the focal region, and has a heat-absorbing cavity 24 inside, used to absorb the concentrated sunlight energy and create a high-temperature lethal environment; and a light-guiding insect-attracting component, including a light-guiding cone 1 and an induction scattering ring 7. The tip of the light-guiding cone 1 extends to the focal region as an input end to receive part of the sunlight, and its bottom end is connected to the induction scattering ring 7 as an output end. The induction scattering ring 7 is disposed outside the insect inlet of the cavity-type heat-collecting insect-killing assembly 2 to scatter the exported sunlight to form an insect-attracting light field. The biomimetic light modulation system includes a pulsed LED light source 11 disposed on the induced scattering ring, a micro photovoltaic power supply module 12 that powers the pulsed LED light source 11, and a microcontroller 14. The microcontroller 14 stores a biomimetic optical modulation dynamic insect-attracting algorithm, which outputs a pulse width modulation signal to drive the pulsed LED light source 11 according to the visual characteristics of the target pest, thereby generating a dynamically changing auxiliary insect-attracting light field. This auxiliary insect-attracting light field is superimposed with the insect-attracting light field formed by the induced scattering ring 7, and together they act on the target pest. The above technical solution of the present invention achieves two major functional integrations: first, it utilizes a dish-type focusing light source to simultaneously generate high-temperature killing energy and a passive insect-attracting light source, achieving "one light for two uses" without additional energy consumption; second, it introduces active biomimetic light modulation, giving the insect-attracting light field dynamic changing characteristics, overcoming the defect of static light sources that easily cause visual fatigue in pests. Among them, the induced scattering ring 7 is used to scatter the exported sunlight to form an "insect-attracting light field," which is the basic light field, while the pulsed LED light source 11 is used to generate an "auxiliary insect-attracting light field," which is an enhanced light field. By superimposing active and passive light fields, a composite dynamic light field with strong attraction to pests is formed at the insect inlet, significantly improving the insect-attracting efficiency.

[0040] like Figure 1 As shown, the present invention also includes a collection channel 5 and a collection box 6. The bottom of the disc condenser 4 is connected to the collection channel 5, and the outlet of the collection channel 5 is aligned with the inlet of the collection box 6.

[0041] The dish-type condenser lens 4 is designed with a light concentration ratio of approximately 500 times to achieve a focal temperature of over 500°C at midday on a sunny day. It is composed of multiple high-reflectivity aluminum alloy silver-plated curved units, forming a rotating parabolic structure. Reinforcing ribs are provided on the back to ensure structural rigidity.

[0042] like Figure 2 and Figure 3 As shown, the cavity-type heat-collecting and insect-killing assembly 2 also includes an inverted conical insect inlet 21, an insect-falling channel 25, and a vacuum insulation layer 23. The insect inlet of the cavity-type heat-collecting and insect-killing assembly 2 is the inverted conical insect inlet 21. The light guide cone 1 is connected to the inverted conical insect inlet 21 via a light guide cone support frame 22. The inverted conical insect inlet 21 is located at the top of the heat-absorbing cavity 24, and its inner wall is a smooth reflective surface used to guide pests into it. The insect-falling channel 25 is located at the bottom of the heat-absorbing cavity 24 and coaxially communicates with the inverted conical insect inlet 21, used to discharge the remains of pests killed by high temperature. The heat-absorbing cavity 24 is a blackbody cavity made of high-temperature resistant material, and its inner surface is sprayed with a high-temperature resistant coating to maximize the absorption of concentrated solar radiation. The vacuum insulation layer 23 covers the outer wall of the heat-absorbing cavity 24, effectively reducing heat loss. The inverted cone-shaped insect inlet 21 has a cone-shaped structure that is wider at the top and narrower at the bottom. Its throat diameter is smaller than the inlet diameter, forming a geometric constraint similar to a one-way valve. Once the pests are attracted by the light field, they cannot escape backwards. The smooth reflective surface of the inner wall reflects the insect-attracting light that shines on the wall back into the cavity, forming an optical guidance path pointing towards the heat-absorbing cavity 24, allowing the pests to fly naturally towards the high-temperature zone along the light path. The insect drop channel 25 is coaxially connected to the inverted cone-shaped insect inlet 21, ensuring that the extremely light debris carbonized by the high temperature falls vertically under the action of gravity, avoiding accumulation and blockage. At the same time, this channel is directly connected to the bottom of the heat-absorbing cavity 24, allowing the high-temperature hot airflow to rise smoothly and form a stable chimney effect. The vacuum insulation layer 23 adopts a double-layer structure with a vacuum in the middle. The extremely low thermal conductivity of the vacuum effectively blocks the high temperature inside the heat absorption cavity 24 from being conducted to the outer wall and support. On the one hand, it reduces heat loss and maintains the temperature inside the cavity in a stable high temperature range of 300-600℃. On the other hand, it protects the connecting parts and electronic components outside the cavity from heat damage and ensures the reliability of the device in long-term operation.

[0043] The light guide cone 1 is made of high-temperature resistant quartz material with a softening temperature of over 1200℃. It can withstand the high-temperature environment of over 500℃ inside the heat-absorbing cavity 24 for a long time without deformation or performance degradation, ensuring the stability of light transmission. Its input end extends into the high-temperature zone inside the heat-absorbing cavity 24, directly located in the center area of ​​the focused light spot, enabling it to efficiently capture high-energy-flux-density sunlight. Its output end is located outside the inverted cone-shaped insect inlet 21, guiding the light energy into the space where pests are active. The side of the light guide cone 1 has a micro-frosted structure to convert the exported strong light into diffused light. The micro-frosted structure on the side introduces micro-roughness into the smooth surface, disrupting the total internal reflection condition of light within the cone, allowing some of the transmitted light to escape evenly from the side. This transforms the originally highly concentrated, glaring direct light into diffused light with a wide angular distribution and soft brightness. On the one hand, this avoids the repulsive effect of strong light on pests; on the other hand, it expands the coverage of the insect-attracting light field, allowing pests in a larger area around the inverted cone-shaped insect inlet 21 to receive the insect-attracting signal.

[0044] It is worth noting that the surface of the induced scattering ring 7 is coated with a diffuse reflection coating, the response band of which covers the phototactic sensitive band of the target pests. The diffuse reflection coating uses a material with high reflectivity and specific spectral selectivity, such as a ceramic coating doped with phosphors. Its reflection spectrum matches the visual photosensitive peak band of the target pests (such as mosquitoes, flies, and moths), typically concentrated in the ultraviolet to blue-green light region of 365nm-500nm. When sunlight guided by the light guide cone 1 shines on the coating surface, the coating uniformly scatters the incident light in all directions, while adjusting the spectral energy to the most sensitive band for the pests through reflection or fluorescence conversion, significantly enhancing the bioavailability and spatial coverage uniformity of the light signal. Simultaneously, it simulates the bright spots that attract insects in nature, forming a soft yet conspicuous bait relative to the pests.

[0045] like Figure 2 As shown, the micro photovoltaic power supply module 12 is connected to the cavity-type heat collection and insect-killing assembly 2 via a ceramic heat insulation bracket 13, and the microcontroller 14 is integrated into the bottom of the cavity-type heat collection and insect-killing assembly 2. The micro photovoltaic power supply module 12 is independent of the main optical path and is connected to the heat-absorbing cavity 24 via the ceramic heat insulation bracket 13. The ceramic material has extremely low thermal conductivity, effectively blocking heat conduction from the heat-absorbing cavity 24 to the micro photovoltaic power supply module 12, ensuring that the photovoltaic cells and electronic components operate within a safe temperature range. The micro photovoltaic power supply module 12 continuously provides power to the microcontroller 14 and the pulsed LED light source 11 during the day, requiring no external power supply or battery, truly achieving zero-energy operation, making it particularly suitable for outdoor scenarios without grid coverage.

[0046] More specifically, the biomimetic optical modulation dynamic insect-attracting algorithm generates at least two different pulse modulation modes based on the critical fusion frequency of the target pest's compound eye, and controls the pulsed LED light source 11 to cycle between a high-frequency stimulation mode and a low-frequency breathing mode to overcome the visual fatigue of the pest. The critical fusion frequency is the highest frequency that the insect's visual system can distinguish from light flickering. Flickering light exceeding this frequency is perceived as continuous light, while light stimulation near this frequency strongly excites the visual nerve response. Based on this biological principle, the algorithm generates two modes with significant temporal characteristics: the high-frequency stimulation mode uses pulse signals close to or slightly higher than the target pest's critical fusion frequency, causing a strong neural excitation effect in the pest's compound eye; the low-frequency breathing mode uses a slowly changing signal of 1-2 Hz to simulate the rhythm of bioluminescence or object movement in nature, inducing the pest to approach. The two modes alternate cyclically over time, keeping the pest's visual system in a dynamically activated state, preventing the formation of neural adaptive inhibition, thus solving the problem of the decreasing trapping efficiency of traditional static light sources or single-frequency flickering light sources over time, and significantly improving the continuous insect-attracting ability.

[0047] A photothermal synergistic high-temperature insecticidal method based on a dish-type concentrator includes the following steps: Step S1: The dish-type concentrator 4 focuses sunlight onto the focal area to form high-temperature heat energy. At the same time, the light guide cone 1 guides part of the sunlight from the focal area and scatters it through the induced scattering ring 7 to form a first insect-attracting light field; Step S2: The microcontroller 14 starts a biomimetic optical modulation algorithm to generate a pulse width modulation signal according to the visual characteristics of the target pest, driving the pulse LED light source 11 to generate a dynamically changing second insect-attracting light field. The second insect-attracting light field and the first insect-attracting light field are superimposed in space to form a composite dynamic insect-attracting light field to lure pests into the cavity-type heat-collecting insecticidal assembly 2; Step S3: After the pests enter the heat-absorbing cavity 24 of the cavity-type heat-collecting insecticidal assembly 2, they are instantly killed by the high-temperature heat energy. The remains after being killed are discharged through the insect-falling channel 25 under the action of gravity and hot airflow. The above describes the three core stages of the photothermal synergistic high-temperature insect control method. In stage S1, the device simultaneously completes two energy conversions: the dish-type condenser mirror 4 converts solar radiation energy into heat energy in the focal area, providing an energy basis for insect control; the light-guiding insect-attracting component directs some light energy and converts it into a spatially optimized first insect-attracting light field, achieving "dual use of light" and obtaining a passive insect-attracting light source without additional energy consumption. In stage S2, the biomimetic light modulation system intervenes, generating a dynamic second insect-attracting light field based on the visual physiological characteristics of the target pest, and superimposing it with the first insect-attracting light field to form a composite dynamic light field with a strong neural stimulation effect. This light field is optimized in both the temporal and spectral domains, and can efficiently attract and guide pests to fly towards the cone-shaped inlet 21. In stage S3, once the pests enter the heat-absorbing cavity 24, they are immediately exposed to a high-temperature environment of 300-600℃. Their internal proteins instantly denature and coagulate, moisture evaporates, and tissues carbonize, achieving complete inactivation. The carbonized remains are extremely lightweight and fall naturally under gravity. Simultaneously, the air inside the heat-absorbing cavity 24 forms an upward hot airflow, creating a chimney effect that blows away and carries away any fine debris that may adhere to the walls, completing the self-cleaning process. These three steps are closely linked, forming an automated closed-loop process from attracting and killing pests to removing residue, requiring no human intervention throughout.

[0048] It should be noted that the first insect-attracting light field is the insect-attracting light field formed by the induced scattering ring 7 based on the derived sunlight; the second insect-attracting light field is the auxiliary insect-attracting light field generated by the pulsed LED light source 11 driven by the biomimetic light modulation system. The superposition of the two constitutes the composite dynamic insect-attracting light field of the present invention.

[0049] The biomimetic optical modulation dynamic insect-attracting algorithm in step S2 specifically includes: setting a high-frequency stimulation frequency f that matches the critical fusion frequency of the compound eye of the target pest species. H In the first time period T H The inner part is a high-frequency stimulation mode, with the high-frequency stimulation frequency f. HA pulse width modulation signal with a constant duty cycle is output to drive the pulsed LED light source 11 to generate a high-frequency, strong stimulation light field; in the subsequent second time period T L Inside, it switches to a low-frequency breathing mode, outputting a pulse width modulation signal with a periodically changing duty cycle to drive the pulsed LED light source 11 to generate a low-frequency biomimetic breathing light field with a frequency of 1Hz to 2Hz; the high-frequency stimulation mode and the low-frequency breathing mode are executed alternately in a cyclic manner. The algorithm first determines the matching high-frequency stimulation frequency f based on the preset or user-selected target pest species. H This frequency is typically located near the critical fusion frequency of the target pest, maximizing the stimulation of visual neural responses. This is followed by a cyclical control period: in the first time interval T... H Within (e.g., 10-30 seconds), the microcontroller 14 outputs a frequency of f. H A PWM waveform with a constant duty cycle drives the pulsed LED light source 11 to produce high-intensity, high-frequency flashing light, which strongly impacts the visual system of pests, breaking through their adaptation threshold; then, in the second time period T... L Within 5-15 seconds (for example), the system switches to a low-frequency breathing mode, outputting a PWM waveform with a duty cycle that continuously changes according to a sine or triangular wave pattern. This causes the brightness of the pulsed LED light source 11 to smoothly change from strong to weak, simulating biological respiration or natural light fluctuations, thus inducing the insects' instinct to approach. The two modes alternate and repeat, keeping the insect-attracting light field constantly changing, preventing the insects' visual nerves from adapting and maintaining a lasting attraction effect.

[0050] The high-frequency stimulation frequency f H The target pest is set as follows: when the target pest is a mosquito or horsefly, f H Set to 45-55Hz; when the target pest is flies, f H Set to 65-80Hz; when the target pest is a moth, f H The frequency was set to 30–40 Hz. Mosquitoes and horseflies have low critical fusion frequencies for their compound eyes, and a flashing frequency of 45–55 Hz can effectively stimulate their visual nerves. Flies' visual systems are more sensitive to high-frequency light, and stimulation at 65–80 Hz produces the best response. Moths are mostly nocturnal insects, and their visual systems are adapted to lower frequencies; flashes at 30–40 Hz are more easily perceived. By selectively choosing the frequency, selective trapping of specific target pests can be achieved, improving control efficiency while reducing interference with non-target insects.

[0051] To gain a clearer and deeper understanding of the working principle of the biomimetic optical modulation dynamic insect-attracting algorithm of this invention, combined with... Figure 4 As shown, the specific implementation steps are as follows:

[0052] Step A: System Power Supply and Initialization

[0053] When the system is powered on, the controller performs a power-on reset and initializes its internal software and hardware resources.

[0054] Step B: Select the target pest pattern

[0055] Users or the system select the type of target pest to be trapped through an external interface.

[0056] Step C: Set the matching frequency

[0057] Based on the selected mode, the system sets the high-frequency stimulation matching frequency f for the corresponding compound eye CFF of the pest. H In this embodiment:

[0058] Step C1: If the "Mosquito / Gadfly" mode is selected, set f H The frequency is 45~55Hz.

[0059] Step C2: If "Fly" mode is selected, set f H The frequency range is 65~80Hz.

[0060] Step C3: If the "Moth" mode is selected, set f H The frequency is 30~40Hz.

[0061] Step D: Enter the main control loop of the algorithm.

[0062] After initialization and frequency setting are completed, the system enters the main control loop and begins to run the trapping program in a loop.

[0063] Step E: Phase 1: Activate the high-frequency stimulation mode

[0064] The main loop begins, first entering the first stage.

[0065] Step F: At the set frequency f H Output a PWM wave with a constant duty cycle

[0066] The PWM wave controls the light source, aiming to awaken and strongly stimulate the visual nerves of pests.

[0067] Step G: "High-frequency timing T" H Finish?"

[0068] The system determines the duration T of the high-frequency stimulus. H End? If “No”, return to step F and continue outputting a PWM wave with a constant duty cycle; if “Yes”, proceed to stage two.

[0069] Step H: Phase Two: Switch to Low-Frequency Breathing Mode

[0070] The system has switched to the second phase.

[0071] Step I: Output a dynamic PWM wave with a sinusoidal gradually changing duty cycle.

[0072] By modulating the light source with a sinusoidal duty cycle, the light source is made to simulate biological respiration, and the respiration frequency band is set to 1~2 Hz.

[0073] Step J: "Low-frequency timing T" L Finish?"

[0074] The system determines the duration T of low-frequency breathing. L End? If “No”, return to step I and continue outputting dynamic PWM waves; if “Yes”, end one trapping cycle.

[0075] Step K: Check the system power supply status

[0076] After each trapping cycle, the system checks the power supply status, mainly whether the photovoltaic panels can supply power normally: if the detection result is "photovoltaic power supply is normal", it returns to step E and starts a new round of high-frequency-low-frequency trapping cycle; if the detection result is "cloudy / rainy night power shortage" (indicating that the photovoltaic has no output or the battery power is insufficient), it enters standby mode.

[0077] Step L: Stop modulation, and the system enters standby / sleep mode.

[0078] The system stops all PWM modulation outputs, the light source is turned off, and the entire system enters a low-power standby sleep state to protect the battery power.

[0079] Step M: "Restore power supply by illumination?"

[0080] The system periodically checks whether sunlight has been restored to determine whether power supply has been restored (for example, whether the output voltage of the photovoltaic module has reached the start-up threshold): if the detection result is "no", it returns to step L and continues to maintain the sleep state; if the detection result is "yes", it indicates that the photovoltaic can supply power normally, returns to step A, re-powers on the system and initializes it, and starts the trapping cycle again.

[0081] In step S3, the temperature inside the heat-absorbing cavity 24 reaches 300-600℃ due to the convergence of sunlight, causing the insect's proteins to denature and its tissues to carbonize instantly upon entry. Simultaneously, the air inside the heat-absorbing cavity 24 forms an upward hot airflow, creating a chimney effect that helps expel the carbonized insect remains. The high-magnification focusing effect of the dish-type condenser lens 4 results in a very high energy flux density in the focal region. The heat-absorbing cavity 24 efficiently absorbs this energy through the blackbody effect, causing the temperature to rapidly rise to 300-600℃. This temperature is far higher than the denaturation and carbonization temperatures of the insect's proteins. Once the insect enters, its internal water instantly vaporizes, its proteins coagulate, and its organic tissues decompose and carbonize. The entire process is completed within 0.5 seconds, ensuring complete inactivation and eliminating the risk of secondary reproduction due to escape or partial survival.

[0082] Simultaneously, the high temperature continuously heats the air inside the cavity, causing the hot air density to decrease and rise, forming a stable upward airflow (chimney effect). This airflow can blow the extremely small carbonized insect remains (mainly composed of inorganic carbon) away from the inner wall of the cavity and carry them out through the insect drop channel 25. This self-cleaning mechanism eliminates the need for manual cleaning of the cavity during long-term operation, reducing the maintenance frequency to only once a month or quarter, requiring only the cleaning of the collection box 6, significantly reducing operation and maintenance costs.

[0083] In summary, this invention uses a dish-type concentrator to focus sunlight at a high magnification onto the focal area. The cavity-type heat-collecting and insect-killing assembly absorbs the light energy and converts it into high-temperature heat energy of 300~600℃, creating an instantaneous lethal environment. The light guide cone directs part of the light energy from the focal area to the induced scattering ring, forming a passive insect-attracting light field. At the same time, the microcontroller drives the pulsed LED light source to cycle between a high-frequency stimulation mode and a low-frequency breathing mode according to the critical fusion frequency of the compound eyes of the target pest, generating a dynamic biomimetic auxiliary light field. This light field is superimposed with the passive light field to form a composite dynamic insect-attracting light field, significantly improving the insect-attracting efficiency and overcoming the visual fatigue of the pests. After being lured into the heat-absorbing cavity, the pests are instantly carbonized and inactivated. The remains are automatically discharged through the insect-falling channel under the action of gravity and the chimney effect of the hot airflow. The entire device requires no external power supply, no chemical agents, and no manual cleaning, achieving fully automated operation from insect attraction and extermination to self-cleaning. Its energy utilization efficiency is significantly improved compared to traditional solar-powered insecticidal lamps, and the maintenance frequency is reduced to once per quarter. It completely solves the shortcomings of existing technologies such as low energy efficiency, reliance on batteries, frequent maintenance, easy decay of insect attraction efficiency, and incomplete extermination. It provides an efficient and reliable solution for green pest control in outdoor scenarios, and is particularly suitable for green pest control in outdoor scenarios such as farmland, pastures, orchards, and ecological parks without power grid coverage.

[0084] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high-temperature insecticidal device based on dish-type light concentration and photothermal synergy, characterized in that: include: A disc-type condenser (4) is used to focus sunlight onto its focal area; The cavity-type heat-collecting and insect-killing assembly (2) is set in the focal area by a cavity assembly support frame (3) connected to the dish-type condenser (4), and a heat-absorbing cavity (24) is formed inside it to absorb the concentrated solar energy and form a high-temperature lethal environment. The light-guided insect-attracting component includes a light-guided cone (1) and an induced scattering ring (7). The tip of the light-guided cone (1) extends to the focal region as an input end to receive part of the sunlight. Its bottom end is connected to the induced scattering ring (7) as an output end. The induced scattering ring (7) is located outside the insect inlet of the cavity-type heat-collecting insect-killing assembly (2) to scatter the exported sunlight to form an insect-attracting light field. The biomimetic light modulation system includes a pulsed LED light source (11) disposed on the induced scattering ring, a micro photovoltaic power supply module (12) that powers the pulsed LED light source (11), and a microcontroller (14). The microcontroller (14) stores a biomimetic optical modulation dynamic insect-attracting algorithm, which is used to output a pulse width modulation signal to drive the pulsed LED light source (11) according to the visual characteristics of the target pest, so as to generate a dynamically changing auxiliary insect-attracting light field. The auxiliary insect-attracting light field is superimposed with the insect-attracting light field formed by the induced scattering ring (7) and acts together on the target pest.

2. The high-temperature insecticidal device based on dish-type focusing photothermal synergy according to claim 1, characterized in that: The cavity-type heat collection and insect killing assembly (2) also includes an inverted cone-shaped insect inlet (21), an insect drop channel (25), and a vacuum insulation layer (23). The inlet of the cavity-type heat collection and insect killing assembly (2) is the inverted cone-shaped inlet (21). The light guide cone (1) is connected to the inverted cone-shaped inlet (21) through the light guide cone support frame (22). The inverted cone-shaped inlet (21) is located at the top of the heat absorption cavity (24), and its inner wall is a smooth reflective surface, which is used to guide pests to enter. The insect drop channel (25) is located at the bottom of the heat absorption cavity (24) and is coaxially connected with the inverted cone-shaped insect inlet (21) to discharge the remains of pests that have been killed by high temperature. The vacuum insulation layer (23) covers the outer wall of the heat-absorbing cavity (24).

3. The high-temperature insecticidal device based on dish-type focusing photothermal synergy according to claim 2, characterized in that: The light guide cone (1) is made of high-temperature resistant quartz material. Its input end extends to the high-temperature zone inside the heat absorption cavity (24), and its output end is located outside the inverted cone-shaped insect inlet (21). The side of the light guide cone (1) has a micro-frosted structure, which is used to convert the output strong light into diffused light.

4. The high-temperature insecticidal device based on dish-type focusing photothermal synergy according to claim 1, characterized in that: The surface of the induced scattering ring (7) is coated with a diffuse reflection coating, the response band of which covers the phototactic sensitive band of the target pest.

5. The high-temperature insecticidal device based on dish-type focusing photothermal synergy according to claim 1, characterized in that: The micro photovoltaic power supply module (12) is connected to the cavity heat collection and insect killing assembly (2) through a ceramic heat insulation bracket (13), and the microcontroller (14) is integrated at the bottom of the cavity heat collection and insect killing assembly (2).

6. The high-temperature insecticidal device based on dish-type focusing photothermal synergy according to claim 2, characterized in that: The biomimetic optical modulation dynamic insect-attracting algorithm is as follows: based on the critical fusion frequency of the compound eye of the target pest, at least two different pulse modulation modes are generated, and the pulse LED light source (11) is controlled to switch cyclically between the high-frequency stimulation mode and the low-frequency breathing mode to overcome the visual fatigue of the pest.

7. The photothermal synergistic high-temperature insecticidal method based on a dish-type concentrating photothermal synergistic high-temperature insecticidal device according to claim 6, characterized in that: Includes the following steps: Step S1: Use a dish-type condenser (4) to focus sunlight to the focal area to form high-temperature heat energy. At the same time, use a light guide cone (1) to guide part of the sunlight from the focal area and scatter it through the induced scattering ring (7) to form the first insect-attracting light field. Step S2: The microcontroller (14) starts the bionic optical modulation algorithm, generates a pulse width modulation signal according to the visual characteristics of the target pest, drives the pulse LED light source (11) to generate a dynamically changing second insect-attracting light field, and the second insect-attracting light field and the first insect-attracting light field are superimposed in space to form a composite dynamic insect-attracting light field to lure pests into the cavity heat collection and insect killing assembly (2). Step S3: After the pests enter the heat-absorbing cavity (24) of the hollow heat-collecting and insect-killing assembly (2), they are instantly killed by the high-temperature heat energy. The remains after being killed are discharged through the insect-falling channel (25) under the action of gravity and hot air flow.

8. The photothermal synergistic high-temperature insecticidal method based on a dish-type concentrating photothermal synergistic high-temperature insecticidal device according to claim 7, characterized in that: The biomimetic optical modulation dynamic insect-attracting algorithm in step S2 specifically includes: Based on the target pest species, a high-frequency stimulation frequency f is set that matches the critical fusion frequency of its compound eyes. H ; In the first time period T H The inner part is a high-frequency stimulation mode, with the high-frequency stimulation frequency f. H Output a pulse width modulation signal with a constant duty cycle to drive a pulsed LED light source (11) to generate a high-frequency strong stimulation light field; In the second period T that followed L Inside, switch to low-frequency breathing mode, output pulse width modulation signal with periodic continuous change of duty cycle, drive pulse LED light source (11) to generate low-frequency bionic breathing light field with frequency of 1Hz to 2Hz; The high-frequency stimulation mode and the low-frequency breathing mode are executed alternately in a cycle.

9. The photothermal synergistic high-temperature insecticidal method based on a dish-type concentrating photothermal synergistic high-temperature insecticidal device according to claim 8, characterized in that: The high-frequency stimulation frequency f H Based on the target pest species, the following settings are made: When the target pest is a mosquito or horsefly, f H Set to 45-55Hz; When the target pest is a fly, f H Set to 65-80Hz; When the target pest is a moth, f H Set to 30-40Hz.

10. The photothermal synergistic high-temperature insecticidal method based on a dish-type concentrating photothermal synergistic high-temperature insecticidal device according to claim 7, characterized in that: In step S3, the temperature inside the heat-absorbing cavity (24) reaches 300-600°C due to the convergence of sunlight, causing the proteins of the pests to denature and the tissues to carbonize instantly after entering; at the same time, the air inside the heat-absorbing cavity (24) forms an upward hot airflow, generating a chimney effect, which helps to expel the carbonized pest remains.

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