A cooling and smoke elimination control system capable of infrared camouflage
Patent Information
- Application Number
- CN202610783772.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-02
- Publication Date
- 2026-08-18
AI Technical Summary
[0004]针对现有技术的不足,本发明提供了一种可实现红外伪装的降温消烟控制系统,解决了降温与消烟技术联合使用时,冷气流冷却烟雾形成红外冷轮廓暴露目标且烟雾有效遮蔽时间缩短的问题
本发明通过回收降温系统排出冷气流与周围环境空气的温差能量实现系统自供电,同时精准感知冷气流边界层内不同空间位置的温度与流速分布,建立对应的三维物理参数分布模型,以此为基础对进入边界层的烟雾颗粒进行空间差异化的红外光谱调控,使被冷气流快速冷却的烟雾颗粒在不同高度和横向位置都能呈现出与对应背景环境一致的红外辐射特征,消除红外热成像画面中清晰的冷色轮廓,避免目标准确位置暴露。在此基础上,引入双波段红外光谱的逐点比对与动态修正机制,持续校准烟雾遮蔽层的红外光谱特性,确保在边界层温度和流速发生动态变化时,烟雾与背景的红外匹配度始终保持稳定。同时,光谱调控过程不改变烟雾颗粒的物理沉降特性,仅通过调节发烟生成器的发烟速率维持烟雾浓度稳定,延长烟雾的有效遮蔽时间,实现降温与消烟技术的协同高效应用,提升军事目标在复杂战场环境下的生存能力。
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Figure CN122593484A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of infrared camouflage technology, specifically to a cooling and smoke elimination control system capable of achieving infrared camouflage. Background Technology
[0002] Infrared camouflage alters the infrared radiation characteristics of a target, making it more consistent with the infrared radiation levels of the surrounding environment, thereby evading detection and tracking by enemy infrared detection equipment. Cooling technology can directly reduce the target's own thermal radiation intensity, while smoke suppression technology can form an infrared shielding barrier covering the target. The combined use of these two technologies is currently an effective way to improve the battlefield survivability of military targets.
[0003] When the cooling system is running, it creates a downward-flowing cold air boundary layer on the target surface. As the smoke particles ejected by the smoke suppression system rise, they come into contact with this cold air boundary layer, rapidly cooling their temperature in a very short time. The cooled smoke particles exhibit a significantly reduced infrared radiation intensity, creating a marked difference from the background environment. The smoke, originally intended to obscure the target, instead forms a clear, cool-colored outline in the infrared thermal imaging, revealing the target's precise location. Simultaneously, the accelerated settling velocity of the cooled smoke particles shortens the effective obscuring time. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides a cooling and smoke elimination control system that enables infrared camouflage. This system solves the problem that when cooling and smoke elimination technologies are used in combination, the cold airflow cools the smoke, forming an infrared cold outline that exposes the target, and the effective smoke concealment time is shortened.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a cooling and smoke elimination control system capable of infrared camouflage, comprising: The unit consists of a cold airflow energy capture and conversion unit, a spectral modulation smoke generation unit, a boundary layer spectral gradient construction module, a dual-band infrared calibration array, and a central spectral matching control unit. The cold airflow energy capture and conversion unit generates electrical energy by utilizing the temperature difference between the cold airflow discharged from the cooling system and the surrounding ambient air, providing a power source for the spectral modulation smoke generation unit. The boundary layer spectral gradient construction module monitors temperature and velocity data at multiple height positions within the cold airflow boundary layer in real time, and establishes a boundary layer physical parameter distribution model based on the monitoring data. The central spectral matching control unit calculates the infrared spectral modulation parameters corresponding to each spatial location in the boundary layer according to the boundary layer physical parameter distribution model, and outputs the corresponding electric field control signal to the spectral modulation smoke generation unit according to the infrared spectral modulation parameters. The smoke particles generated by the spectral modulation smoke generation unit have an electrically adjustable spectral modulation coating on their surface. Under the action of the electric field control signal, the smoke particles adjust their infrared spectrum to match the background environment at that location. The dual-band infrared calibration array simultaneously acquires infrared spectral data of the background environment and the smoke shielding layer and sends them to the central spectral matching control unit. The central spectral matching control unit compares the background spectral data and the smoke spectral data point by point, and adjusts the electric field control signal in real time to correct the infrared spectrum of the smoke particles based on the comparison results.
[0006] Furthermore, the boundary layer spectral gradient construction module includes multiple sets of temperature monitoring units and multiple sets of flow rate monitoring units; Each temperature monitoring unit includes multiple temperature sensors arranged at intervals along the vertical direction, and each flow rate monitoring unit includes multiple flow rate sensors arranged at intervals along the vertical direction. Each group of temperature monitoring units is arranged at different lateral positions along the direction of cold air flow, and each group of flow velocity monitoring units is arranged at different lateral positions along the direction of cold air flow. Each set of temperature monitoring units and flow velocity monitoring units has monitoring points set at the near-wall position, the middle section of the boundary layer, and the outer edge of the boundary layer within the coverage area of the cold airflow; The boundary layer spectral gradient construction module calculates the temperature gradient value and flow velocity gradient value corresponding to each monitoring point based on the temperature data and flow velocity data of each monitoring point. It then fits a temperature-flow velocity characteristic curve for each height layer based on the temperature gradient value and flow velocity gradient value, and establishes a boundary layer physical parameter distribution model based on the temperature-flow velocity characteristic curve of each height layer.
[0007] Furthermore, the central spectral matching control unit includes a spectral mapping unit and a signal generation unit; The spectral mapping unit reads the temperature and flow rate values corresponding to each height layer from the boundary layer physical parameter distribution model, and determines the set of infrared spectral modulation parameters for each height layer according to the preset infrared spectral mapping relationship. The infrared spectral mapping relationship includes the correspondence between temperature values and infrared absorption spectra, and the correspondence between flow rate values and infrared emission spectra. The signal generation unit generates a corresponding smoke control command based on the infrared spectral modulation parameter set for each altitude layer, and sends the smoke control command to the spectral modulation smoke generation unit.
[0008] Furthermore, when the boundary layer spectral gradient construction module detects a change in the temperature or velocity data of the cold airflow boundary layer, the boundary layer spectral gradient construction module updates the temperature gradient or velocity gradient value corresponding to the changed monitoring point, refits the temperature-velocity characteristic curve corresponding to the changed height layer, and updates the boundary layer physical parameter distribution model. The central spectral matching control unit re-extracts the temperature and flow rate values of each altitude layer based on the updated boundary layer physical parameter distribution model, recalculates the infrared spectral modulation parameter set of each altitude layer, regenerates the smoke generation control command, and sends it to the spectral modulation smoke generation unit.
[0009] Furthermore, the dual-band infrared calibration array includes multiple infrared detection units, each of which can operate in both the short-wave infrared band and the long-wave infrared band. The dual-band infrared calibration array simultaneously acquires infrared spectral data of the target background area to form a background spectral dataset, and simultaneously acquires infrared spectral data of the smoke shielding layer to form a smoke spectral dataset. The dual-band infrared calibration array sends the background spectral dataset and the smoke spectral dataset to the central spectral matching control unit; The central spectral matching control unit compares the data in the background spectral dataset and the smoke spectral dataset point by point, calculates the spectral deviation value of each comparison point, and determines the spatial position corresponding to the spectral deviation value when the spectral deviation value exceeds a preset threshold. Based on the spatial position, the electric field control signal of the corresponding spectral modulation smoke generation unit is corrected. The dual-band infrared calibration array continuously performs the acquisition, transmission, and comparison process to correct the infrared spectrum of the smoke shielding layer in real time.
[0010] Furthermore, the cold airflow energy capture and conversion unit includes a thermoelectric power generation component and an energy storage module; The thermoelectric power generation component is installed at the exhaust port of the cooling system. It collects the temperature of the cold air flow and the temperature of the surrounding ambient air, calculates the difference between the temperature of the cold air flow and the temperature of the surrounding ambient air, and starts the power generation mode to convert the temperature difference into electrical energy when the temperature difference reaches a preset capture threshold. The energy storage module receives and stores the electrical energy generated by the thermoelectric generator, and supplies power to each unit when the stored energy in the energy storage module reaches the system startup energy threshold. During normal operation of the system, the energy storage module continuously receives and stores the electrical energy generated by the thermoelectric generator to maintain the continuous operation of the system.
[0011] Furthermore, the spectral modulation smoke generation unit includes a smoke generator and a spectral modulation controller; The smoke particles emitted by the smoke generator have an electrically adjustable spectral modulation coating on their surface. The spectral modulation controller receives the electric field control signal sent by the central spectral matching control unit, and generates a corresponding electric field intensity value according to the electric field control signal, so that the spectral modulation coating dynamically adjusts the infrared absorption and emission spectra under the action of the corresponding electric field intensity. The spectral modulation controller receives the electric field control signal output by the central spectral matching control unit in real time, and synchronously adjusts the electric field intensity value of the spectral modulation coating. When a change in the electric field control signal is detected, the electric field intensity value is updated in real time according to the changed electric field control signal, so that the infrared spectral characteristics of the spectral modulation coating are matched with the current background environment.
[0012] Furthermore, after the smoke particles are ejected from the smoke generator, they enter the cold airflow boundary layer and are distributed around the target surface according to the flow pattern of the boundary layer driven by the cold airflow. The spectral modulation coating on the surface of smoke particles adjusts the infrared radiation characteristics of the smoke particles to match the background infrared radiation characteristics of the smoke particle's location under the action of an applied electric field. The central spectral matching control unit queries the background infrared radiation characteristic value corresponding to each spatial location based on the coordinates of each spatial location in the boundary layer physical parameter distribution model, and sends the corresponding electric field control signal to the spectral modulation smoke generation unit at that location. Smoke particles at different spatial locations receive different electric field control signals, enabling multi-point matching of the overall infrared radiation characteristics of the smoke shielding layer with the background environment.
[0013] Furthermore, the response time of the spectrally modulated coating loaded on the surface of the smoke particles is in the order of milliseconds; The central spectral matching control unit adjusts the electric field control signal in real time based on the spectral deviation information fed back by the dual-band infrared calibration array. After receiving the new electric field control signal, the spectral modulation coating completes the adjustment of the infrared spectrum within the response time. The infrared spectral adjustment process of the spectral modulation coating does not affect the physical sedimentation characteristics of smoke particles. The system maintains a stable smoke concentration by adjusting the smoke generation rate of the smoke generator, ensuring that the smoke cover time meets operational requirements.
[0014] Furthermore, the central spectral matching control unit includes a data receiving module, a parameter calculation module, a signal output module, and a feedback correction module; The data receiving module receives the boundary layer physical parameter distribution model sent by the boundary layer spectral gradient construction module, as well as the background spectral dataset and smoke spectral dataset sent by the dual-band infrared calibration array; The parameter calculation module calculates the infrared spectral modulation parameters corresponding to each spatial location based on the boundary layer physical parameter distribution model. The signal output module generates a corresponding electric field control signal based on the infrared spectral modulation parameters and sends it to the spectral modulation smoke generation unit. The feedback correction module compares the background spectral dataset and the smoke spectral dataset point by point. When the detected spectral deviation value exceeds the preset threshold, the correction process is triggered. The correction process includes determining the spatial location corresponding to the deviation, querying the current infrared spectral modulation parameters at that location, calculating the parameter correction amount based on the spectral deviation value, generating the corrected electric field control signal, and sending it through the signal output module.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves system self-powering by recovering the energy from the temperature difference between the cooled airflow discharged from the cooling system and the surrounding ambient air. Simultaneously, it precisely senses the temperature and velocity distribution at different spatial locations within the boundary layer of the cooled airflow, establishing a corresponding three-dimensional physical parameter distribution model. Based on this model, it performs spatially differentiated infrared spectral modulation on smoke particles entering the boundary layer. This ensures that smoke particles rapidly cooled by the airflow exhibit infrared radiation characteristics consistent with the corresponding background environment at different heights and lateral positions, eliminating clear cold-colored outlines in infrared thermal imaging and preventing the precise location of targets from being exposed. Furthermore, it introduces a point-by-point comparison and dynamic correction mechanism for dual-band infrared spectroscopy to continuously calibrate the infrared spectral characteristics of the smoke shielding layer, ensuring that the infrared matching degree between the smoke and the background remains stable even when the boundary layer temperature and velocity dynamically change. At the same time, the spectral modulation process does not alter the physical sedimentation characteristics of the smoke particles; it only maintains stable smoke concentration by adjusting the smoke generation rate of the smoke generator, extending the effective shielding time of the smoke. This achieves the synergistic and efficient application of cooling and smoke elimination technologies, enhancing the survivability of military targets in complex battlefield environments. Attached Figure Description
[0016] Figure 1 This is a diagram of the overall system architecture of the present invention; Figure 2 This is a flowchart illustrating the overall system operation of the present invention. Figure 3 This is a flowchart of the spectral matching closed-loop correction process of the present invention. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] Please see Figures 1-3 This invention provides a cooling and smoke elimination control system capable of infrared camouflage, comprising: a cold airflow energy capture and conversion unit, a spectral modulation smoke generation unit, a boundary layer spectral gradient construction module, a dual-band infrared calibration array, and a central spectral matching control unit; the cold airflow energy capture and conversion unit generates electrical energy using the temperature difference between the cold airflow discharged from the cooling system and the surrounding ambient air, providing power to the spectral modulation smoke generation unit; the boundary layer spectral gradient construction module monitors temperature and velocity data at multiple height positions within the cold airflow boundary layer in real time, and establishes a boundary layer physical parameter distribution model based on the monitoring data; the central spectral matching control unit calculates the boundary layer physical parameter distribution model based on the boundary layer physical parameter distribution model. The infrared spectral modulation parameters corresponding to each spatial location are used to output corresponding electric field control signals to the spectral modulation smoke generation unit. The smoke particles generated by the spectral modulation smoke generation unit have electrically adjustable spectral modulation coatings on their surfaces. Under the action of the electric field control signals, the smoke particles adjust their infrared spectra to match the background environment at that location. The dual-band infrared calibration array simultaneously collects infrared spectral data from the background environment and the smoke shielding layer and sends it to the central spectral matching control unit. The central spectral matching control unit compares the background spectral data and the smoke spectral data point by point and adjusts the electric field control signals in real time to correct the infrared spectra of the smoke particles based on the comparison results.
[0019] Specifically, this system requires no external power supply. It recovers waste cold energy generated during the cooling system's operation through a cold airflow energy capture and conversion unit, achieving self-powered operation and reducing the load on the target's original power supply system. The boundary layer spectral gradient construction module acquires the three-dimensional physical parameter distribution of the cold airflow boundary layer through distributed multi-point monitoring, overcoming the limitation of traditional smoke suppression systems that cannot detect changes in parameters within the boundary layer. The central spectral matching control unit establishes a mapping relationship between boundary layer physical parameters and infrared spectral modulation parameters, enabling spatially differentiated control of the infrared spectrum of smoke particles. The spectral modulation smoke generation unit alters the infrared radiation characteristics of smoke particles through an electrically controlled coating, allowing the cooled smoke particles to match the infrared radiation level of the background environment, avoiding the formation of a clear cold-colored outline in infrared thermal imaging. A dual-band infrared calibration array forms a closed-loop feedback link, ensuring that the infrared spectrum of the smoke shielding layer remains consistent with the background under complex environmental changes.
[0020] In one specific embodiment, the boundary layer spectral gradient construction module includes multiple sets of temperature monitoring units and multiple sets of flow velocity monitoring units. Each set of temperature monitoring units includes multiple temperature sensors spaced apart along the vertical direction, and each set of flow velocity monitoring units includes multiple flow velocity sensors spaced apart along the vertical direction. Each set of temperature monitoring units and flow velocity monitoring units are arranged at different lateral positions along the direction of cold air flow. Monitoring points are set at the near-wall position, the middle section of the boundary layer, and the outer edge of the boundary layer within the coverage area of the cold air flow for each set of temperature and flow velocity monitoring units. The boundary layer spectral gradient construction module calculates the temperature gradient value and flow velocity gradient value corresponding to each monitoring point based on the temperature and flow velocity data of each monitoring point. Based on the temperature gradient value and flow velocity gradient value, it fits a temperature-flow velocity characteristic curve for each height layer and establishes a boundary layer physical parameter distribution model based on the temperature-flow velocity characteristic curve of each height layer.
[0021] Specifically, the temperature monitoring unit employs a high-precision platinum resistance thermometer, while the flow velocity monitoring unit uses a hot-wire anemometer. The sensor density is determined based on the target surface size and the coverage area of the cold airflow. For an armored vehicle target with a length of 10 meters, five sets of temperature monitoring units and five sets of flow velocity monitoring units can be evenly arranged along the vehicle's length. Each monitoring unit has three monitoring points in the vertical direction, corresponding to a position near the target surface at 0.1 meters, a position in the middle of the boundary layer at 0.5 meters, and a position at the outer edge of the boundary layer at 1.0 meter. The temperature gradient value is calculated by the ratio of the temperature difference to the height difference between two adjacent height monitoring points, and the flow velocity gradient value is calculated by the ratio of the flow velocity difference to the height difference between two adjacent height monitoring points.
[0022] The temperature gradient is calculated using the finite difference method commonly used in fluid mechanics, and the formula is as follows: ; in For height Temperature gradient at that location, For height Temperature value at that location, For height The temperature value at that location.
[0023] The velocity gradient is also calculated using the finite difference method, and the formula is as follows: ; in For height velocity gradient at that point For height The flow velocity at that location, For height The flow velocity value at that location.
[0024] In the actual calculation, the height of the near-wall position is taken as 0.1 meters, the height of the middle section of the boundary layer is taken as 0.5 meters, and the height of the outer edge of the boundary layer is taken as 1.0 meters. If at a certain lateral position, the near-wall temperature is 15℃, the middle section of the boundary layer is 18℃, and the outer edge of the boundary layer is 22℃, then the temperature gradient between the near-wall and the middle section is (18-15) / (0.5-0.1)=7.5℃ / m, and the temperature gradient between the middle section and the outer edge is (22-18) / (1.0-0.5)=8℃ / m. Similarly, for velocity calculation, if the near-wall velocity is 0.3 m / s, the mid-section velocity is 0.8 m / s, and the outer edge velocity is 1.2 m / s, then the velocity gradient between the near-wall and the mid-section is (0.8-0.3) / (0.5-0.1) = 1.25 m / s / m, and the velocity gradient between the mid-section and the outer edge is (1.2-0.8) / (1.0-0.5) = 0.8 m / s / m.
[0025] For each altitude layer, the least squares method is used to linearly fit the temperature and velocity data of all lateral monitoring points at that altitude layer, resulting in the temperature-velocity characteristic curve for that altitude layer. The temperature fitting formula is as follows: ,in For height horizontal position Temperature value, For height The slope of temperature change with lateral position. For height The intercept of temperature variation with lateral position. The flow velocity fitting formula is: ,in For height horizontal position The flow rate value, For height The slope of the flow velocity as a function of lateral position. For height The intercept of velocity variation with lateral position is defined. By integrating the temperature-velocity characteristic curves of all height layers, a three-dimensional physical parameter distribution model of the cold air boundary layer is constructed. This model can accurately describe the temperature and velocity distribution at any spatial location within the boundary layer.
[0026] In one specific embodiment, the central spectral matching control unit includes a spectral mapping unit and a signal generation unit. The spectral mapping unit reads the temperature and flow rate values corresponding to each height layer from the boundary layer physical parameter distribution model, and determines the infrared spectral modulation parameter set for each height layer according to a preset infrared spectral mapping relationship. The infrared spectral mapping relationship includes the correspondence between temperature values and infrared absorption spectra, and the correspondence between flow rate values and infrared emission spectra. The signal generation unit generates corresponding smoke generation control commands based on the infrared spectral modulation parameter set for each height layer, and sends the smoke generation control commands to the spectral modulation smoke generation unit.
[0027] Specifically, the infrared spectral mapping relationship was obtained through pre-experimental calibration. In a standard experimental environment, an experimental platform simulating a cold airflow boundary layer was constructed, capable of precisely controlling the temperature and velocity of the cold airflow. Smoke particles loaded with a spectral modulation coating were placed in the simulated boundary layer, and the infrared absorption and emission spectra of the coating under different electric field intensities were measured using a Fourier transform infrared spectrometer. During the experiment, the temperature and velocity of the cold airflow were changed sequentially, and the spectral data corresponding to each set of temperature, velocity, and electric field intensity were recorded. Through statistical analysis of a large amount of experimental data, the correspondence between temperature values and the peak wavelength and absorption coefficient of the infrared absorption spectrum, as well as the correspondence between velocity values and the peak wavelength and emissivity of the infrared emission spectrum, were established. These correspondences were stored in the non-volatile memory of the spectral mapping unit, forming an infrared spectral mapping relationship database.
[0028] The spectral mapping unit retrieves the corresponding infrared absorption and emission spectral parameters from a database based on the temperature and velocity values at each spatial location in the boundary layer physical parameter distribution model, and combines them to form a set of infrared spectral modulation parameters for that location. The signal generation unit converts this set of infrared spectral modulation parameters into a corresponding electric field intensity control signal. The mapping relationship between the electric field intensity and the spectral parameters is obtained through fitting experimental data, as shown in the formula: ; in For electric field strength, Infrared absorption coefficient, Infrared emissivity, and These are the weighting coefficients.
[0029] The weighting coefficients were determined through experimental calibration under normal temperature and pressure conditions. for , for If at a certain spatial location, the infrared absorption coefficient obtained from the temperature query is... The infrared emissivity obtained from the flow velocity query is 0.7, therefore the corresponding electric field strength is... The signal generation unit simultaneously generates a smoke emission rate control signal, adjusting the smoke emission rate at different locations based on the velocity distribution within the boundary layer. The smoke emission rate is appropriately increased at locations with higher velocity and appropriately decreased at locations with lower velocity, ensuring that smoke particles are evenly distributed within the cold airflow boundary layer.
[0030] In one specific embodiment, when the boundary layer spectral gradient construction module detects a change in the temperature or velocity data of the cold airflow boundary layer, the boundary layer spectral gradient construction module updates the temperature gradient or velocity gradient value corresponding to the changed monitoring point, refits the temperature-velocity characteristic curve corresponding to the changed height layer, and updates the boundary layer physical parameter distribution model; the central spectral matching control unit re-extracts the temperature and velocity values of each height layer according to the updated boundary layer physical parameter distribution model, recalculates the infrared spectral modulation parameter set of each height layer, regenerates the smoke generation control command, and sends it to the spectral modulation smoke generation unit.
[0031] Specifically, the boundary layer spectral gradient construction module collects temperature and velocity data at a fixed sampling frequency, determined based on the dynamic characteristics of the cold airflow boundary layer and set to 10Hz. When the difference between the temperature or velocity data at a monitoring point and the data from the previous sampling period exceeds a preset threshold, the parameter at that monitoring point is considered to have changed. The threshold values are determined based on the ambient noise level; the temperature threshold is set to 0.5℃, and the velocity threshold is set to 0.2m / s. The boundary layer spectral gradient construction module only updates the temperature and velocity gradient values corresponding to the monitoring points that have changed; for monitoring points that have not changed, the original parameter values are retained. Subsequently, the temperature-velocity characteristic curve corresponding to the height layer containing the changed monitoring points is refitted, updating the boundary layer physical parameter distribution model.
[0032] The central spectral matching control unit reads the updated boundary layer physical parameter distribution model in real time, recalculates the infrared spectral modulation parameter set only for spatial locations where parameters have changed, generates corresponding smoke generation control commands, and sends them to the spectral modulation smoke generation unit. For example, when the boundary layer outer edge temperature at a certain lateral location rises from 22℃ to 24℃, exceeding the 0.5℃ change threshold, the boundary layer spectral gradient construction module updates the temperature gradient between the middle section and the outer edge at that location. The temperature characteristic curve of the outer edge height layer of the boundary layer is refitted. Based on the updated temperature values, the central spectral matching control unit re-queries the infrared spectral mapping database to obtain a new infrared absorption coefficient. The new electric field strength is calculated to be The electric field control signal is then sent to the corresponding spectral modulation smoke generation unit. This local update method effectively reduces the computational load of the system, improves the system's response speed, and ensures that the infrared spectrum of the smoke particles can be adjusted in a timely manner when the boundary layer of the cold airflow changes dynamically.
[0033] In one specific embodiment, the dual-band infrared calibration array includes multiple infrared detection units, each of which can operate in both the short-wave infrared band and the long-wave infrared band. The dual-band infrared calibration array simultaneously acquires infrared spectral data of the target background region to form a background spectral dataset, and simultaneously acquires infrared spectral data of the smoke shielding layer to form a smoke spectral dataset. The dual-band infrared calibration array sends the background spectral dataset and the smoke spectral dataset to the central spectral matching control unit. The central spectral matching control unit performs point-by-point comparison of the data in the background spectral dataset and the smoke spectral dataset, calculates the spectral deviation value at each comparison point, and when the spectral deviation value exceeds a preset threshold, determines the spatial location corresponding to the spectral deviation value, and corrects the electric field control signal of the corresponding spectral modulation smoke-generating unit based on this spatial location. The dual-band infrared calibration array continuously executes the acquisition, transmission, and comparison process to correct the infrared spectrum of the smoke shielding layer in real time.
[0034] Specifically, the dual-band infrared calibration array employs a planar infrared detector. The short-wave infrared band has a detection range of 1μm to 3μm, and the long-wave infrared band has a detection range of 8μm to 14μm. These two bands are the primary operating bands for military infrared detection equipment. The number of infrared detection units is determined based on the target's obscuration range, ensuring coverage of the entire smoke cover layer and the corresponding background area. The dual-band infrared calibration array simultaneously acquires infrared images of both the background area and the smoke cover layer, converting each pixel in the image into corresponding infrared spectral data, forming background spectral datasets and smoke spectral datasets respectively. The central spectral matching and control unit compares the spectral data of corresponding spatial locations in the two datasets point-by-point, calculating the spectral deviation value.
[0035] The spectral deviation value is calculated using the sum of squares of the spectral differences, and the formula is as follows: ; in This is the spectral deviation value. For smoke shielding layer at wavelength Infrared radiation intensity at that location For background environment at wavelength Infrared radiation intensity at that location and These represent the lower and upper limits of the detection band, respectively.
[0036] Taking the long-wave infrared band as an example, It is 8μm. The sampling point is 14μm, and a sampling point is taken every 1μm. If at a certain comparison point, the infrared radiation intensity of the background at 8μm to 14μm is 10, 12, 15, 18, 20, 17, 14 W / (m²·μm), and the infrared radiation intensity of the smoke at the corresponding wavelength is 8, 10, 13, 16, 18, 15, 12 W / (m²·μm), then the spectral deviation value is (10-8)²+(12-10)²+(15-13)²+(18-16)²+(20-18)²+(17-15)²+(14-12)²=4+4+4+4+4+4+4=28. The preset spectral deviation threshold is determined based on the recognition sensitivity of the infrared detection device and is set to 5% of the background radiation intensity. The calculated average background radiation intensity at this point is (10+12+15+18+20+17+14) / 7=15.14 W / (m²·μm), the 5% threshold is 0.76 W / (m²·μm), and the corresponding spectral deviation threshold is 7×(0.76)²≈4.0. Since the calculated spectral deviation value 28 is greater than the threshold 4.0, the central spectral matching control unit determines the spatial location corresponding to this point, queries the current infrared spectral modulation parameters at this location, calculates the parameter correction amount based on the spectral deviation value, generates the corrected electric field control signal, and sends it to the corresponding spectral modulation smoke generation unit. The dual-band infrared calibration array continuously executes the above process to achieve closed-loop real-time correction of the infrared spectrum of the smoke shielding layer, ensuring that the infrared spectrum of the smoke shielding layer remains consistent with the background environment when factors such as ambient light and temperature change.
[0037] In one specific embodiment, the cold airflow energy capture and conversion unit includes a thermoelectric generator and an energy storage module. The thermoelectric generator is located at the exhaust port of the cooling system, collects the temperature of the cold airflow and the ambient air temperature, calculates the temperature difference between the cold airflow and the ambient air temperature, and activates the power generation mode to convert the temperature difference into electrical energy when the temperature difference reaches a preset capture threshold. The energy storage module receives and stores the electrical energy generated by the thermoelectric generator, and supplies power to each unit when the stored power in the energy storage module reaches the system startup power threshold. During normal system operation, the energy storage module continuously receives and stores the electrical energy generated by the thermoelectric generator to maintain continuous system operation.
[0038] Specifically, the thermoelectric generator uses a bismuth telluride-based semiconductor thermoelectric chip, which has high thermoelectric conversion efficiency. The hot side of the thermoelectric generator is exposed to the ambient air, while the cold side comes into contact with the cold airflow discharged from the cooling system, generating electricity using the temperature difference between the hot and cold sides. The preset capture threshold is determined based on the start-up temperature difference of the thermoelectric chip and is set to 5°C. When the temperature difference between the cold airflow and the ambient air reaches 5°C, the thermoelectric generator starts generating electricity. The energy storage module uses a high-energy-density lithium-ion battery pack, which can quickly store the electrical energy generated by the thermoelectric generator. The system start-up power threshold is determined based on the minimum operating voltage and power consumption of each unit in the system. When the stored power in the energy storage module reaches this threshold, it automatically supplies power to the boundary layer spectral gradient construction module, the central spectral matching control unit, and the dual-band infrared calibration array. During normal system operation, the thermoelectric generator continuously generates electricity. While meeting the system's power supply requirements, the energy storage module stores excess electrical energy, ensuring that the system can maintain normal operation for a period of time even when the cooling system is briefly shut down or the temperature difference is small. The cold airflow energy capture and conversion unit enables the recycling of waste cold resources without the need for an additional independent power supply, thus improving the system's independence and battlefield adaptability.
[0039] In one specific embodiment, the spectral modulation smoke generation unit includes a smoke generator and a spectral modulation controller; the smoke particles emitted by the smoke generator have an electrically adjustable spectral modulation coating on their surface; the spectral modulation controller receives an electric field control signal sent by the central spectral matching control unit, generates a corresponding electric field intensity value according to the electric field control signal, and dynamically adjusts the infrared absorption and emission spectra of the spectral modulation coating under the action of the corresponding electric field intensity; the spectral modulation controller receives the electric field control signal output by the central spectral matching control unit in real time, synchronously adjusts the electric field intensity value of the spectral modulation coating, and updates the electric field intensity value in real time according to the changed electric field control signal when a change in the electric field control signal is detected, so that the infrared spectral characteristics of the spectral modulation coating are matched with the current background environment.
[0040] Specifically, the smoke generator employs a compressed air-driven atomizing smoke production device, capable of generating smoke particles with uniform particle size controlled between 1μm and 10μm. Smoke particles within this size range exhibit good suspension characteristics and infrared shielding effects. The spectral modulation coating loaded on the surface of the smoke particles is prepared using a polyaniline-based electrochromic material. This material undergoes a redox reaction under an applied electric field, altering its molecular structure and thus adjusting its infrared absorption and emission spectra. The spectral modulation controller includes a high-voltage power supply module and an electric field driving circuit, capable of outputting a corresponding high-voltage electric field based on the electric field control signal sent by the central spectral matching control unit. The spectral modulation controller is integrated with the smoke generator, applying an electric field the instant the smoke particles are ejected, causing the spectral modulation coating to quickly adjust to the target infrared spectral characteristics. The response time of the spectral modulation controller is matched with the response time of the spectral modulation coating, ensuring that the electric field control signal can be applied to the spectral modulation coating in a timely manner.
[0041] In one specific embodiment, smoke particles are ejected from the smoke generator and enter the cold airflow boundary layer. Driven by the cold airflow, they are distributed around the target surface according to the boundary layer flow pattern. The spectral modulation coating on the surface of the smoke particles adjusts the infrared radiation characteristics of the smoke particles to match the background infrared radiation characteristics of the location of the smoke particles under the action of an applied electric field. The central spectral matching control unit queries the background infrared radiation characteristic value corresponding to each spatial location based on the coordinates of each spatial location in the boundary layer physical parameter distribution model, and sends the corresponding electric field control signal to the spectral modulation smoke generating unit at that location. Smoke particles at different spatial locations receive different electric field control signals, realizing multi-point matching of the overall infrared radiation characteristics of the smoke shielding layer with the background environment.
[0042] Specifically, smoke generators are uniformly arranged along the edge of the target surface to ensure that the emitted smoke particles completely cover the cold airflow boundary layer. After entering the cold airflow boundary layer, the smoke particles follow the cold airflow along the target surface, forming a uniform smoke shielding layer within the boundary layer. Due to differences in temperature and flow velocity at different spatial locations within the cold airflow boundary layer, the cooling degree and distribution density of the smoke particles will also vary. The central spectral matching control unit assigns a corresponding electric field control signal to the smoke particles at each spatial location based on the boundary layer physical parameter distribution model, so that the smoke particles at different locations exhibit infrared radiation characteristics that match the background environment at that location. At the near-wall location where the cold airflow temperature is low, the infrared emissivity of the smoke particles is increased by adjusting the electric field strength to compensate for the decrease in infrared radiation intensity caused by the temperature drop; at the outer edge of the boundary layer where the cold airflow velocity is high, the infrared absorption spectrum of the smoke particles is changed by adjusting the electric field strength to match the infrared absorption characteristics of the background environment. This spatially differentiated control method enables the overall infrared radiation characteristics of the smoke shielding layer to be completely integrated with the background environment, avoiding obvious contour boundaries in infrared thermal imaging.
[0043] In one specific embodiment, the response time of the spectral modulation coating on the surface of the smoke particles is in the millisecond range; the central spectral matching control unit adjusts the electric field control signal in real time according to the spectral deviation information fed back by the dual-band infrared calibration array, and the spectral modulation coating completes the infrared spectrum adjustment within the response time after receiving the new electric field control signal; the infrared spectrum adjustment process of the spectral modulation coating does not affect the physical deposition characteristics of the smoke particles; the system maintains the stability of the smoke concentration by adjusting the smoke generation rate of the smoke generator, ensuring that the smoke concealment time meets the combat requirements.
[0044] Specifically, the spectral modulation coating is prepared using nanoscale electrochromic materials, exhibiting a fast response speed with a response time controllable within 10ms. The control cycle of the central spectral matching control unit is matched with the response time of the spectral modulation coating, ensuring the system can quickly respond to spectral deviation information. The infrared spectral adjustment of the spectral modulation coating is achieved through reversible changes in molecular structure, without altering the particle size, density, or other physical properties of the smoke particles, thus not affecting their natural settling velocity. The system monitors the smoke shielding layer concentration in real time, adjusting the smoke generation rate of the smoke generator to replenish smoke particles lost due to settling and maintain stable smoke concentration. Smoke concentration monitoring is achieved through a dual-band infrared calibration array, calculating the smoke concentration based on the infrared transmittance of the smoke shielding layer. When the smoke concentration is below a preset shielding threshold, the smoke generation rate of the smoke generator is increased; when the smoke concentration is above the preset threshold, the smoke generation rate is decreased. In this way, while ensuring infrared shielding effectiveness, the effective shielding time of the smoke can be extended, meeting the needs of prolonged combat operations.
[0045] In one specific embodiment, the central spectral matching control unit includes a data receiving module, a parameter calculation module, a signal output module, and a feedback correction module. The data receiving module receives the boundary layer physical parameter distribution model sent by the boundary layer spectral gradient construction module, as well as the background spectral dataset and smoke spectral dataset sent by the dual-band infrared calibration array. The parameter calculation module calculates the infrared spectral modulation parameters corresponding to each spatial location based on the boundary layer physical parameter distribution model. The signal output module generates a corresponding electric field control signal based on the infrared spectral modulation parameters and sends it to the spectral modulation smoke generation unit. The feedback correction module performs point-by-point comparison of the background spectral dataset and the smoke spectral dataset. When a spectral deviation value is detected to exceed a preset threshold, a correction process is triggered. The correction process includes determining the spatial location corresponding to the deviation, querying the current infrared spectral modulation parameters at that location, calculating the parameter correction amount based on the spectral deviation value, generating the corrected electric field control signal, and sending it through the signal output module.
[0046] Specifically, the central spectral matching control unit uses an embedded microprocessor as its core control unit, integrating a data receiving module, a parameter calculation module, a signal output module, and a feedback correction module. The data receiving module connects to the boundary layer spectral gradient construction module and the dual-band infrared calibration array via a high-speed serial interface, enabling real-time reception of large amounts of monitoring and spectral data. The parameter calculation module employs a parallel computing architecture, capable of simultaneously processing infrared spectral modulation parameter calculations at multiple spatial locations, improving system computational efficiency. The signal output module connects to multiple spectral modulation smoke generating units via multi-channel analog output interfaces, enabling simultaneous transmission of independent electric field control signals to spectral modulation smoke generating units at different locations. The feedback correction module operates independently of the parameter calculation module, processing spectral deviation information fed back from the dual-band infrared calibration array in real-time and triggering the correction process. In the correction process, the parameter correction amount is determined based on the magnitude and direction of the spectral deviation value, and a proportional-integral control algorithm is used to calculate the correction amount, ensuring that the corrected spectrum converges quickly to the target spectrum. The modular design of the central spectral matching control unit improves system reliability and maintainability, facilitating subsequent functional expansion and upgrades.
[0047] When the system is running, the cold airflow energy capture and conversion unit starts first, using the temperature difference between the cold airflow discharged from the cooling system and the ambient air to generate and store electrical energy. Once the energy storage module reaches its activation threshold, each monitoring and control unit powers on sequentially. The boundary layer spectral gradient construction module continuously collects boundary layer temperature and velocity data, constructing and updating the physical parameter distribution model. The central spectral matching control unit calculates the spectral modulation parameters at each location based on the model, generating an electric field control signal that is sent to the spectral modulation smoke generation unit. The spectral modulation smoke generation unit ejects smoke particles loaded with an adjustable coating, which adjust their infrared spectral characteristics under the influence of the electric field, forming a shielding layer that follows the distribution of the cold airflow. A dual-band infrared calibration array collects infrared spectral data of the background and smoke in real time, feeding it back to the central spectral matching control unit for deviation correction. Through the synergistic effect of feedforward and feedback control, the system ensures that the infrared spectrum of the smoke shielding layer remains consistent with the background environment, effectively eliminating the infrared cold profile generated by the cold airflow cooling the smoke, while maintaining a stable smoke concentration, extending the effective shielding time, and improving the target's battlefield survivability.
[0048] In summary, this invention achieves system self-powering by recovering the energy from the temperature difference between the cooled airflow discharged from the cooling system and the surrounding ambient air. Simultaneously, it accurately senses the temperature and velocity distribution at different spatial locations within the boundary layer of the cooled airflow, establishing a corresponding three-dimensional physical parameter distribution model. Based on this model, it performs spatially differentiated infrared spectral modulation on smoke particles entering the boundary layer. This ensures that smoke particles rapidly cooled by the airflow exhibit infrared radiation characteristics consistent with the corresponding background environment at different heights and lateral positions, eliminating clear cold-colored outlines in infrared thermal imaging and preventing the precise location of the target from being exposed. Furthermore, it introduces a point-by-point comparison and dynamic correction mechanism for dual-band infrared spectroscopy to continuously calibrate the infrared spectral characteristics of the smoke shielding layer, ensuring that the infrared matching degree between the smoke and the background remains stable even when the boundary layer temperature and velocity dynamically change. At the same time, the spectral modulation process does not alter the physical sedimentation characteristics of the smoke particles; it only maintains stable smoke concentration by adjusting the smoke generation rate of the smoke generator, extending the effective shielding time of the smoke. This achieves the synergistic and efficient application of cooling and smoke elimination technologies, enhancing the survivability of military targets in complex battlefield environments. It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A cooling and smoke elimination control system capable of infrared camouflage, characterized in that, include: The unit consists of a cold airflow energy capture and conversion unit, a spectral modulation smoke generation unit, a boundary layer spectral gradient construction module, a dual-band infrared calibration array, and a central spectral matching control unit. The cold airflow energy capture and conversion unit generates electrical energy by utilizing the temperature difference between the cold airflow discharged from the cooling system and the surrounding ambient air, providing a power source for the spectral modulation smoke generation unit. The boundary layer spectral gradient construction module monitors temperature and velocity data at multiple height positions within the cold airflow boundary layer in real time, and establishes a boundary layer physical parameter distribution model based on the monitoring data. The central spectral matching control unit calculates the infrared spectral modulation parameters corresponding to each spatial location in the boundary layer according to the boundary layer physical parameter distribution model, and outputs the corresponding electric field control signal to the spectral modulation smoke generation unit according to the infrared spectral modulation parameters. The smoke particles generated by the spectral modulation smoke generation unit have an electrically adjustable spectral modulation coating on their surface. Under the action of the electric field control signal, the smoke particles adjust their infrared spectrum to match the background environment at that location. The dual-band infrared calibration array simultaneously acquires infrared spectral data of the background environment and the smoke shielding layer and sends them to the central spectral matching control unit. The central spectral matching control unit compares the background spectral data and the smoke spectral data point by point, and adjusts the electric field control signal in real time to correct the infrared spectrum of the smoke particles based on the comparison results.
2. The cooling and smoke elimination control system capable of infrared camouflage according to claim 1, characterized in that, The boundary layer spectral gradient construction module includes multiple sets of temperature monitoring units and multiple sets of flow velocity monitoring units; Each temperature monitoring unit includes multiple temperature sensors arranged at intervals along the vertical direction, and each flow rate monitoring unit includes multiple flow rate sensors arranged at intervals along the vertical direction. Each group of temperature monitoring units is arranged at different lateral positions along the direction of cold air flow, and each group of flow velocity monitoring units is arranged at different lateral positions along the direction of cold air flow. Each set of temperature monitoring units and flow velocity monitoring units has monitoring points set at the near-wall position, the middle section of the boundary layer, and the outer edge of the boundary layer within the coverage area of the cold airflow; The boundary layer spectral gradient construction module calculates the temperature gradient value and flow velocity gradient value corresponding to each monitoring point based on the temperature data and flow velocity data of each monitoring point. It then fits a temperature-flow velocity characteristic curve for each height layer based on the temperature gradient value and flow velocity gradient value, and establishes a boundary layer physical parameter distribution model based on the temperature-flow velocity characteristic curve of each height layer.
3. A cooling and smoke elimination control system capable of infrared camouflage according to claim 2, characterized in that, The central spectral matching control unit includes a spectral mapping unit and a signal generation unit; The spectral mapping unit reads the temperature and flow rate values corresponding to each height layer from the boundary layer physical parameter distribution model, and determines the set of infrared spectral modulation parameters for each height layer according to the preset infrared spectral mapping relationship. The infrared spectral mapping relationship includes the correspondence between temperature values and infrared absorption spectra, and the correspondence between flow rate values and infrared emission spectra. The signal generation unit generates a corresponding smoke control command based on the infrared spectral modulation parameter set for each altitude layer, and sends the smoke control command to the spectral modulation smoke generation unit.
4. A cooling and smoke elimination control system capable of infrared camouflage according to claim 2, characterized in that, When the boundary layer spectral gradient construction module detects a change in the temperature or velocity data of the cold air boundary layer, the boundary layer spectral gradient construction module updates the temperature gradient or velocity gradient value corresponding to the changed monitoring point, refits the temperature-velocity characteristic curve corresponding to the changed height layer, and updates the boundary layer physical parameter distribution model. The central spectral matching control unit re-extracts the temperature and flow rate values of each altitude layer based on the updated boundary layer physical parameter distribution model, recalculates the infrared spectral modulation parameter set of each altitude layer, regenerates the smoke generation control command, and sends it to the spectral modulation smoke generation unit.
5. A cooling and smoke elimination control system capable of infrared camouflage according to claim 1, characterized in that, The dual-band infrared calibration array includes multiple infrared detection units, each of which can operate in both the short-wave infrared band and the long-wave infrared band. The dual-band infrared calibration array simultaneously acquires infrared spectral data of the target background area to form a background spectral dataset, and simultaneously acquires infrared spectral data of the smoke shielding layer to form a smoke spectral dataset. The dual-band infrared calibration array sends the background spectral dataset and the smoke spectral dataset to the central spectral matching control unit; The central spectral matching control unit compares the data in the background spectral dataset and the smoke spectral dataset point by point, calculates the spectral deviation value of each comparison point, and determines the spatial position corresponding to the spectral deviation value when the spectral deviation value exceeds a preset threshold. Based on the spatial position, the electric field control signal of the corresponding spectral modulation smoke generation unit is corrected. The dual-band infrared calibration array continuously performs the acquisition, transmission, and comparison process to correct the infrared spectrum of the smoke shielding layer in real time.
6. A cooling and smoke elimination control system capable of infrared camouflage according to claim 1, characterized in that, The cold airflow energy capture and conversion unit includes a thermoelectric power generation component and an energy storage module; The thermoelectric power generation component is installed at the exhaust port of the cooling system. It collects the temperature of the cold air flow and the temperature of the surrounding ambient air, calculates the difference between the temperature of the cold air flow and the temperature of the surrounding ambient air, and starts the power generation mode to convert the temperature difference into electrical energy when the temperature difference reaches a preset capture threshold. The energy storage module receives and stores the electrical energy generated by the thermoelectric generator, and supplies power to each unit when the stored energy in the energy storage module reaches the system startup energy threshold. During normal operation of the system, the energy storage module continuously receives and stores the electrical energy generated by the thermoelectric generator to maintain the continuous operation of the system.
7. A cooling and smoke elimination control system capable of infrared camouflage according to claim 1, characterized in that, The spectral modulation smoke generation unit includes a smoke generator and a spectral modulation controller; The smoke particles emitted by the smoke generator have an electrically adjustable spectral modulation coating on their surface. The spectral modulation controller receives the electric field control signal sent by the central spectral matching control unit, and generates a corresponding electric field intensity value according to the electric field control signal, so that the spectral modulation coating dynamically adjusts the infrared absorption and emission spectra under the action of the corresponding electric field intensity. The spectral modulation controller receives the electric field control signal output by the central spectral matching control unit in real time, and synchronously adjusts the electric field intensity value of the spectral modulation coating. When a change in the electric field control signal is detected, the electric field intensity value is updated in real time according to the changed electric field control signal, so that the infrared spectral characteristics of the spectral modulation coating are matched with the current background environment.
8. A cooling and smoke elimination control system capable of infrared camouflage according to claim 7, characterized in that the smoke... After being ejected from the smoke generator, the particles enter the cold airflow boundary layer and are distributed around the target surface along the boundary layer flow pattern driven by the cold airflow. The spectral modulation coating on the surface of smoke particles adjusts the infrared radiation characteristics of the smoke particles to match the background infrared radiation characteristics of the smoke particle's location under the action of an applied electric field. The central spectral matching control unit queries the background infrared radiation characteristic value corresponding to each spatial location based on the coordinates of each spatial location in the boundary layer physical parameter distribution model, and sends the corresponding electric field control signal to the spectral modulation smoke generation unit at that location. Smoke particles at different spatial locations receive different electric field control signals, enabling multi-point matching of the overall infrared radiation characteristics of the smoke shielding layer with the background environment.
9. A cooling and smoke elimination control system capable of infrared camouflage according to claim 7, characterized in that, The response time of the spectrally modulated coating loaded on the surface of smoke particles is in the order of milliseconds; The central spectral matching control unit adjusts the electric field control signal in real time based on the spectral deviation information fed back by the dual-band infrared calibration array. After receiving the new electric field control signal, the spectral modulation coating completes the adjustment of the infrared spectrum within the response time. The infrared spectral adjustment process of the spectral modulation coating does not affect the physical sedimentation characteristics of smoke particles. The system maintains a stable smoke concentration by adjusting the smoke generation rate of the smoke generator, ensuring that the smoke cover time meets operational requirements.
10. A cooling and smoke elimination control system capable of infrared camouflage according to claim 1, characterized in that, The central spectral matching control unit includes a data receiving module, a parameter calculation module, a signal output module, and a feedback correction module; The data receiving module receives the boundary layer physical parameter distribution model sent by the boundary layer spectral gradient construction module, as well as the background spectral dataset and smoke spectral dataset sent by the dual-band infrared calibration array; The parameter calculation module calculates the infrared spectral modulation parameters corresponding to each spatial location based on the boundary layer physical parameter distribution model. The signal output module generates a corresponding electric field control signal based on the infrared spectral modulation parameters and sends it to the spectral modulation smoke generation unit. The feedback correction module compares the background spectral dataset and the smoke spectral dataset point by point. When the detected spectral deviation value exceeds the preset threshold, the correction process is triggered. The correction process includes determining the spatial location corresponding to the deviation, querying the current infrared spectral modulation parameters at that location, calculating the parameter correction amount based on the spectral deviation value, generating the corrected electric field control signal, and sending it through the signal output module.