CN119743867B - Infrared expandable portable navigation-aiding light system, lamp and storage medium - Google Patents
Infrared expandable portable navigation-aiding light system, lamp and storage medium Download PDFInfo
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Abstract
本申请涉及助航灯光的技术领域，尤其涉及一种红外可拓展的便携式助航灯光系统、灯具及存储介质。本申请首先通过温度传感器采集温度数据，计算补偿参数；然后根据补偿参数调节PWM驱动电流；接着调整分光复合透镜系统优化光强分布；最后通过分区控制和智能供电管理确保系统稳定工作；不仅解决了温度漂移导致的光强不稳定问题，而且通过双光谱配合实现了全天候可靠工作，显著提升了助航灯光系统的适应性和可靠性。
The present application relates to the technical field of navigation lights, and in particular to an infrared expandable portable navigation light system, lamp and storage medium. The present application first collects temperature data through a temperature sensor and calculates compensation parameters; then adjusts the PWM drive current according to the compensation parameters; then adjusts the spectroscopic composite lens system to optimize the light intensity distribution; finally, ensures stable operation of the system through partition control and intelligent power supply management; not only solves the problem of unstable light intensity caused by temperature drift, but also realizes all-weather reliable operation through dual-spectrum coordination, significantly improving the adaptability and reliability of the navigation light system.
Description
Technical Field
The application relates to the technical field of navigation aid lamplight, in particular to an infrared expandable portable navigation aid lamplight system, a lamp and a storage medium.
Background
With the rapid development of the fields of aviation navigation and the like, the performance requirements on the navigation-aiding light system are continuously improved. The navigation light system is used as important equipment for guaranteeing traffic safety, and is required to provide stable and reliable navigation indication functions in various complex environments, and particularly plays a key role in night and special weather conditions.
The prior navigation-aid lighting system mainly adopts a technical scheme that a single spectrum LED light source is matched with a fixed optical system. The scheme improves the luminous effect by increasing the number of LEDs and optical elements, maintains the stability of the system by adopting a simple temperature control circuit, and achieves a certain effect in practical application. But is difficult to adapt to all-weather requirements, cannot be dynamically adjusted according to the environment, and needs to be further improved.
Disclosure of Invention
In order to solve the problem that the existing navigation-aiding light system is difficult to adapt to all-weather requirements and cannot be dynamically adjusted according to the environment, the application provides an infrared expandable portable navigation-aiding light system, a lamp and a storage medium, which adopt the following technical scheme:
in a first aspect, the present application provides an infrared expandable portable navigational aid lighting system, comprising:
The temperature compensation module is used for acquiring the center temperature data and the environment temperature data of the visible light LED array and the infrared LED array, and calculating the temperature compensation coefficient of the dual-spectrum emission system according to a preset temperature-light intensity characteristic curve to obtain the compensation parameter of the emission system;
The driving control module is used for carrying out step adjustment on the driving current of the double-spectrum LED array through PWM dimming according to the compensation parameter of the emission system, and collecting the forward voltage and current data of the LEDs to obtain a real-time driving parameter;
the optical configuration module is used for adjusting the gear of the light splitting composite lens system according to the real-time driving parameters, and selecting a preset light intensity distribution mode to obtain a light path configuration signal;
the regional control module is used for carrying out regional drive control on the LED array according to the light path configuration signal, and basically and uniformly emitting light by adjusting the drive current of the LEDs in each region to obtain regional control parameters;
the power supply management module is used for calculating the total power demand of the system according to the partition control parameters, and selecting a corresponding power supply mode according to the battery capacity state to obtain power supply control parameters;
and the voltage stabilizing protection module is used for controlling the output voltage of the DC-DC converter according to the power supply control parameters, realizing overvoltage and overcurrent protection, and feeding back voltage and current data to the temperature compensation module for temperature compensation correction.
By adopting the technical scheme, in order to solve the reliability problem of the navigation light system in a complex weather environment, the prior art usually increases the light intensity by simply increasing the number of LEDs or increasing the power of a single LED, and the scheme exposes various defects in practical application, for example, in navigation lighting of an offshore oil platform, the LED light intensity is unstable due to severe temperature change, the single spectrum has poor penetrating capacity in haze weather, the warning effect is greatly reduced, in airport runway lighting, a fixed optical system cannot adapt to different visibility conditions, so that lighting dead angles are caused, firstly, temperature data are acquired through a temperature sensor, compensation parameters are calculated, then PWM driving current is regulated according to the compensation parameters, then the light intensity distribution is optimized by adjusting a light splitting composite lens system, finally, stable operation of the system is ensured through partition control and intelligent power supply management, the problem of unstable light intensity caused by temperature drift is solved, all-weather reliable operation is realized through double-spectrum cooperation, and the adaptability and the reliability of the navigation light system are remarkably improved.
Optionally, the temperature compensation module specifically includes:
The data acquisition unit is used for acquiring the center temperature data and the environment temperature data of the visible light LED array and the infrared LED array;
The density analysis unit is used for combining the central temperature data and the environmental temperature data, calculating the temperature gradient distribution value of the double-spectrum LED array and determining a temperature compensation reference value according to a preset temperature-light intensity characteristic curve;
The efficiency calculation unit is used for calculating a luminous efficiency correction coefficient corresponding to each LED unit at the current temperature according to the temperature gradient distribution value and the temperature compensation reference value;
The deviation analysis unit is used for analyzing real-time temperature deviation according to the luminous efficiency correction coefficient and combining a preset temperature-light intensity characteristic curve to obtain a temperature compensation correction value of the LED unit;
and the parameter generating unit is used for calculating the temperature compensation coefficient of the dual-spectrum emission system according to the temperature compensation correction value and the temperature compensation reference value to obtain the compensation parameter of the emission system.
By adopting the technical scheme, the light-emitting efficiency of the LED is closely related to the working temperature, the conventional navigation-aiding lighting system generally adopts a single-point temperature detection and simple linear compensation mode, so that the actual temperature distribution state of the LED array is difficult to accurately reflect.
Optionally, the driving control module specifically includes:
The difference detection unit is used for acquiring forward voltage and current data of the LEDs and calculating a real-time power variation value of the double-spectrum LED array;
The characteristic analysis unit is used for determining a stepping adjustment parameter of PWM dimming according to the power change value;
The current adjusting unit is used for realizing the step adjustment of the driving current of the double-spectrum LED array through PWM waveform modulation according to the compensation parameter of the emission system and the step adjustment parameter;
And the feedback generation unit is used for collecting the regulated forward voltage and current data of the LED and generating real-time driving parameters.
By adopting the technical scheme, as the driving control of the double-spectrum LED array needs to simultaneously consider the characteristic difference of visible light and infrared spectrum, the traditional fixed PWM dimming scheme is difficult to realize accurate light intensity adjustment; the application firstly collects the voltage and current characteristics of the LEDs, then analyzes the power variation trend to establish a dimming gear, then dynamically adjusts PWM waveforms according to the temperature compensation result, finally forms closed-loop control through real-time feedback, provides more accurate light intensity control capability through step adjustment, and greatly improves the dimming precision and stability of the system.
Optionally, the characteristic analysis unit specifically includes:
The power characteristic subunit is used for acquiring power change curves of the visible light LED and the infrared LED, analyzing power change rules of the double spectrums under different driving currents and establishing a power-current mapping model;
The duty ratio calculating subunit is used for calculating the optimal PWM duty ratios corresponding to different power points according to the luminous efficiency curve of the double-spectrum LED and the power-current mapping model, and generating a PWM waveform parameter table;
The weight analysis subunit is used for establishing the brightness weight proportion of the visible light spectrum and the infrared light spectrum, calculating the comprehensive luminous flux when the double spectrums cooperatively emit light, and determining the dimming priority of each spectrum;
And the strategy generation subunit is used for establishing a mapping relation between a power change value and a PWM duty ratio according to the PWM waveform parameter table and the dimming priority and generating a self-adaptive stepping adjustment strategy.
By adopting the technical scheme, the visible light LED and the infrared LED have different power characteristics and luminous efficiency curves, the optimal cooperative control of the double spectrums is difficult to realize by the traditional unified PWM dimming strategy, for example, when the visible light needs to be reduced and the infrared light needs to be enhanced at night in a runway navigation light, the optimal proportion of the two spectrums cannot be accurately mastered by simple duty ratio adjustment, so that uneven light intensity or energy consumption is caused.
Optionally, the optical configuration module specifically includes:
the parameter analysis unit is used for analyzing the real-time luminous flux and the spectral characteristics of the double-spectrum LED according to the real-time driving parameters;
A lens adjustment unit for adjusting a shift position of the spectroscopic compound lens system based on the luminous flux and the spectral characteristics;
the pattern matching unit is used for matching an optimal matching pattern from a preset light intensity distribution pattern library according to different application scene requirements;
and the optical path optimizing unit is used for calculating the optimal divergence angle and the light intensity distribution of the double-spectrum light beam according to the optimal matching mode and generating an optical path configuration signal.
By adopting the technical scheme, the navigation-aid lighting system needs to keep the optimal lighting effect under different weather conditions and application scenes, the traditional fixed optical system is difficult to adapt to changeable environment requirements, for example, in an airport runway lamp, the light intensity distribution mode needs to be changed under different visibility conditions, the static lens system is difficult to meet complex weather requirements.
Optionally, the lens adjusting unit specifically includes:
the wavelength separation subunit is used for calculating wavelength separation threshold values of visible light and infrared light according to the spectral characteristics and determining spectral separation parameters of the spectral composite lens;
The gear control subunit is used for adjusting the gear angle of the light splitting composite lens according to the luminous flux distribution, wherein the gear angle is determined according to a preset luminous flux-angle mapping relation;
The optical path compensation subunit is used for analyzing optical path differences of the double spectrums in different gears, calculating optical path compensation amounts and dynamically adjusting the distance between the lens groups, wherein the lens group adjustment distance is calculated according to a preset optical path difference model;
and the light spot optimization subunit is used for calibrating the overlapping degree of the double-spectrum light spots according to the optical path compensation quantity.
By adopting the technical scheme, due to the fact that the visible light and the infrared light have dispersion effect and optical path difference in the lens system, the traditional fixed type light-splitting composite lens is difficult to realize precise control and perfect superposition of the double spectrums, the application firstly calculates the separation threshold value according to the spectrum characteristics, then adjusts the gear angle according to the luminous flux distribution, then compensates the distance between the lens groups through the optical path difference model, finally optimizes the light spot superposition degree of the double spectrums, realizes perfect fusion of the double spectrums through optical compensation, and remarkably improves the spectrum control precision and the light energy utilization efficiency of the system.
Optionally, the area control module specifically includes:
The signal processing unit is used for acquiring partition layout information of the double-spectrum LED array according to the optical path configuration signal;
the area dividing unit is used for carrying out area planning on the LED array according to the area layout information and determining the driving control range of each area;
a parameter calculation unit for calculating driving current parameters of the LEDs in each region and generating current adjustment values required by basically uniform light emission;
And the instruction generation unit is used for adjusting the driving current of the LEDs in each region according to the current adjustment value, and combining the driving control range of each region to obtain the partition control parameters.
By adopting the technical scheme, the problems of uneven heat distribution, poor chip consistency and the like of the large-area LED array in practical application are solved, the uniform light emitting effect of the array is difficult to ensure in the traditional uniform driving control mode.
Optionally, the power supply management module specifically includes:
The power analysis unit is used for calculating the real-time power consumption of the LED array according to the partition control parameters to obtain the total power demand of the system;
the power monitoring unit is used for detecting the capacity state and the residual power of the battery and determining the available power supply duration;
The mode selection unit is used for matching corresponding power supply modes according to the total power requirement of the system and the available power supply duration;
And the parameter output unit is used for generating power supply control parameters according to the power supply mode.
By adopting the technical scheme, the application firstly calculates the real-time power consumption of the system, then monitors the residual capacity of the battery, then selects a proper mode according to the power demand and the power supply capacity, finally outputs optimized power supply parameters, realizes the optimal balance of the system performance and the endurance time through dynamic power management, and remarkably improves the reliability and the continuous working capacity of the system.
In a second aspect, the present application provides a lamp, including a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein the processor implements the steps performed by the above-described infrared expandable portable navigational light system when the computer program is executed by the processor.
In a third aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above-described infrared expandable portable navigational light system.
In summary, the present application includes at least one of the following beneficial technical effects:
The application collects temperature data through a temperature sensor to calculate compensation parameters, then adjusts PWM driving current according to the compensation parameters, then adjusts a beam splitting compound lens system to optimize light intensity distribution, and finally ensures stable operation of the system through partition control and intelligent power supply management;
The application firstly establishes a temperature acquisition network to acquire multi-point temperature data, then analyzes temperature gradient distribution through a thermodynamic model, then calculates an efficiency correction value by combining temperature-light intensity characteristics of the LEDs, finally generates a compensation parameter to guide system adjustment, realizes accurate temperature compensation of the LED array through multidimensional analysis, and remarkably improves the light intensity stability and consistency of the system;
Because the driving control of the double-spectrum LED array needs to simultaneously consider the characteristic difference of visible light and infrared spectrum, the traditional fixed PWM dimming scheme is difficult to realize accurate light intensity adjustment; the application firstly collects the voltage and current characteristics of the LEDs, then analyzes the power variation trend to establish a dimming gear, then dynamically adjusts PWM waveforms according to the temperature compensation result, finally forms closed-loop control through real-time feedback, provides more accurate light intensity control capability through step adjustment, and greatly improves the dimming precision and stability of the system.
Drawings
FIG. 1 is a schematic diagram of an infrared expandable portable navigational aid lighting system according to an embodiment of the present application;
FIG. 2 is a flow chart of power mode switching in an embodiment of the application;
FIG. 3 is a schematic diagram of a temperature compensation module according to an embodiment of the present application;
FIG. 4 is a schematic diagram of temperature field density analysis in an embodiment of the application;
FIG. 5 is a schematic diagram of a driving control module according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a characteristic analysis unit in an embodiment of the present application;
FIG. 7 is a schematic diagram of an optical configuration module according to an embodiment of the present application;
fig. 8 is a schematic structural view of a lens adjusting unit in an embodiment of the present application;
FIG. 9 is a schematic diagram of a domain control module according to an embodiment of the present application;
FIG. 10 is a schematic diagram of a power management module according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of a lamp in an embodiment of the application.
Detailed Description
The terminology used in the following embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates to the contrary. It should also be understood that the term "and/or" as used in this disclosure is intended to encompass any or all possible combinations of one or more of the listed items.
The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of embodiments of the application, unless otherwise indicated, the meaning of "a plurality" is two or more.
Embodiments of the application are described in further detail below with reference to the drawings.
In a first aspect, the present application provides an infrared expandable portable navigational aid lighting system, referring to fig. 1, comprising:
The temperature compensation module is used for acquiring the center temperature data and the environment temperature data of the visible light LED array and the infrared LED array, and calculating the temperature compensation coefficient of the dual-spectrum emission system according to a preset temperature-light intensity characteristic curve to obtain the compensation parameter of the emission system.
The temperature compensation module adopts a high-precision digital temperature sensor array, and a multi-point temperature acquisition node is arranged at the key position of the LED substrate, so that a temperature field distribution model is established. The system establishes a temperature-light intensity characteristic curve database in advance through a large amount of experimental data, comprises LED light intensity variation characteristics of different temperature points within the range of-40 ℃ to 85 ℃, and obtains a temperature compensation coefficient calculation model through polynomial fitting.
Specifically, the temperature compensation module firstly collects the central temperature and the ambient temperature data of the LED array, the collected temperature data is input into a preset temperature compensation model, and a real-time compensation coefficient is obtained through calculation. For example, when it is detected that the LED center temperature rises to 65 ℃, the model automatically calculates a compensation coefficient of-15% for adjusting the driving parameters. Meanwhile, the system can carry out secondary correction on the compensation coefficient according to the ambient temperature, so that the compensation accuracy is ensured.
And the driving control module is used for carrying out stepping adjustment on the driving current of the double-spectrum LED array through PWM dimming according to the compensation parameters of the emission system, and collecting the forward voltage and current data of the LEDs to obtain real-time driving parameters.
In this embodiment, the driving control module adopts a high-performance PWM controller, integrates a multi-channel constant current driving circuit, and establishes a mapping relation database of driving current and luminous flux. The system realizes the accurate control of the LED driving current in a table look-up mode, and collects the forward voltage and current data of the LEDs in real time for state monitoring.
Specifically, after the drive control module receives the temperature compensation coefficient, the optimal drive current value is determined by querying a preset current-luminous flux mapping table.
Furthermore, the driving control module adopts a modularized design architecture, and an infrared LED driving channel expansion interface is reserved. The system establishes a visible light/infrared double-spectrum driving parameter library and supports the dynamic loading of infrared LED driving configuration. The driving circuit adopts a configurable multi-channel structure, the number of driving channels of the infrared LED can be flexibly expanded according to actual requirements, when the infrared function needs to be expanded, the infrared LED module is connected only through a reserved interface, and the system automatically identifies the newly-added channels and loads corresponding driving parameters. For example, a user can select to add a near infrared or middle far infrared LED module according to task requirements, and the system automatically adapts to a corresponding driving strategy.
And the optical configuration module is used for adjusting the gear of the light splitting composite lens system according to the real-time driving parameters, and selecting a preset light intensity distribution mode to obtain an optical path configuration signal.
In this embodiment, the optical configuration module is equipped with a high-precision stepper motor control system for adjusting the position of the spectral compound lens. The system establishes a light intensity distribution pattern library in advance, comprises optimal light intensity distribution patterns under different application scenes, and can be dynamically matched according to actual requirements.
Specifically, the optical configuration module calculates luminous flux characteristics according to the driving parameters, and selects optimal configuration by combining a preset light intensity distribution mode library. The system adjusts the lens position in real time through a closed-loop control algorithm, so that the light beam is ensured to be always kept in an optimal state. For example, when the visibility is low, the system can automatically select a narrow beam mode, so that the light beam penetrating capability is improved.
Furthermore, the optical configuration module adopts a double-spectrum compatible design, and the light-splitting compound lens system reserves an infrared light path expansion space. The system constructs a visible light/infrared double-spectrum light intensity distribution mode library and supports independent configuration and composite output of infrared light beams. The lens system adopts a modularized structure, and the function expansion can be realized rapidly by adding an infrared lens component. When the infrared function is expanded, only the matched infrared lens module is required to be installed, and the system automatically loads the double-spectrum light intensity distribution mode. For example, a narrow-angle or wide-angle infrared lens can be selectively added according to practical application, so that the infrared illumination requirements under different scenes can be realized.
The regional control module is used for carrying out regional drive control on the LED array according to the light path configuration signals, and basically uniform light emission is realized by adjusting the drive current of the LEDs in each region to obtain regional control parameters.
In this embodiment, the area control module adopts an intelligent partition control strategy, and divides the LED array into a plurality of independent control areas through thermal distribution modeling. The system establishes a regional light intensity uniformity evaluation model, calculates driving parameter deviation of each region in real time, and ensures the overall luminous uniformity.
Specifically, the area control module performs partition planning based on the optical path configuration signal, and determines the optimal driving current value of each area by querying a preset area driving parameter database. For example, when detecting that the light intensity of a certain area is low, the system can automatically increase the driving current of the area, so as to realize dynamic compensation and keep the whole light intensity uniform.
Furthermore, the regional control module adopts a reconfigurable partition architecture to support the dynamic expansion of the infrared LED array. The system establishes a double-spectrum LED layout template library in advance, and can flexibly adjust the partition strategy according to the infrared function expansion requirement. The control algorithm adopts a self-adaptive structure, and can automatically identify and manage the newly added infrared LED area.
And the power supply management module is used for calculating the total power requirement of the system according to the partition control parameters and selecting a corresponding power supply mode according to the battery capacity state to obtain the power supply control parameters.
Wherein, referring to fig. 2, the power supply management module integrates an intelligent power supply management system, and establishes a battery capacity-discharge characteristic model. The system is preset with a plurality of power supply modes, including a standard mode, an energy saving mode, an emergency mode and the like, and can be dynamically switched according to actual conditions.
Specifically, the power management module calculates the power requirements of the system in real time, and selects the most suitable power supply mode in combination with the battery capacity state. By inquiring a preset power supply strategy database, the system can intelligently balance performance and endurance time. For example, when the battery capacity is less than 30%, the system can automatically switch to the energy-saving mode, and the working time is prolonged.
And the voltage stabilizing protection module is used for controlling the output voltage of the DC-DC converter according to the power supply control parameters, realizing overvoltage and overcurrent protection, and feeding back voltage and current data to the temperature compensation module for temperature compensation correction.
The voltage stabilizing protection module adopts a high-efficiency DC-DC conversion technology, and a complete voltage and current protection threshold model is established. The system presets a multi-stage protection threshold value, including overvoltage protection, overcurrent protection, short-circuit protection and the like, so as to ensure the safe operation of the system.
Specifically, the voltage stabilizing protection module dynamically adjusts by monitoring system voltage and current parameters in real time and combining a preset protection threshold model. When an anomaly is detected, the system immediately starts the corresponding protection mechanism. For example, when the output current exceeds the threshold, the system automatically reduces the output voltage and feeds back status information to the temperature compensation module for correction.
In one embodiment, referring to FIG. 3, the temperature compensation module specifically includes:
The data acquisition unit is used for acquiring the center temperature data and the environment temperature data of the visible light LED array and the infrared LED array.
In this embodiment, the data acquisition unit adopts a distributed temperature sensing network architecture, and high-precision digital temperature sensors are arranged at key positions of the LED array. The system establishes a multi-layer temperature data acquisition model which comprises an array central area, an array edge area and an environment reference point, and a complete temperature field description is formed through real-time data acquisition.
And the density analysis unit is used for calculating the temperature gradient distribution value of the double-spectrum LED array by combining the central temperature data and the environment temperature data, and determining a temperature compensation reference value according to a preset temperature-light intensity characteristic curve.
In this embodiment, the density analysis unit constructs a temperature field density analysis model, and a temperature gradient distribution database is built in advance. As shown in fig. 4, the system sets 5 key temperature measurement points on the LED array, including a center temperature point Tc and four corner temperature points T1-T4, from which the complete temperature field distribution is reconstructed. The temperature field shows a rule of decreasing from the center to the periphery, and the distribution characteristic of the temperature gradient can be visually represented through an isothermal line. The database contains typical temperature distribution characteristics under different working conditions, and the temperature value at any position can be calculated through an interpolation algorithm, so that the accurate reconstruction of a temperature field is realized.
Specifically, the density analysis unit firstly carries out Gaussian filtering processing on the acquired temperature data, and then calculates temperature gradient distribution by using a two-dimensional spline interpolation algorithm. As shown in fig. 4, the system divides the temperature field into three isothermal zones, with the isotherm distribution shown in dashed lines. The temperature in the central zone can be as high as 85 ℃, and isothermal zones of 65 ℃ and 45 ℃ are formed outwards. The system presets a temperature-light intensity characteristic curve family based on experimental data, and obtains a temperature value of any point through grid division and interpolation calculation, so as to determine a temperature compensation reference value. For example, when the center temperature point Tc is detected to be 65 ℃, the average value of the corner temperature points is 25 ℃, the system calculates the temperature gradient of 40 ℃ according to the isotherm distribution, and obtains the corresponding compensation reference value.
And the efficiency calculation unit is used for calculating the luminous efficiency correction coefficient corresponding to each LED unit at the current temperature according to the temperature gradient distribution value and the temperature compensation reference value.
In this embodiment, the efficiency calculation unit establishes a mathematical model of the luminous efficiency of the LED, including key parameters such as a temperature coefficient, a current density, and a quantum efficiency. The system establishes an efficiency correction coefficient database through a large number of tests in advance, and can be dynamically adjusted according to real-time temperature conditions.
Specifically, the efficiency calculating unit calculates the efficiency correction coefficient of each LED unit by using a preset efficiency calculating model and combining the temperature gradient distribution value. For example, when the temperature of a certain LED unit is 10 ℃ higher than the reference temperature, the system calculates an efficiency correction coefficient of-5% according to the correction model for subsequent compensation.
And the deviation analysis unit is used for analyzing the real-time temperature deviation by combining a preset temperature-light intensity characteristic curve according to the luminous efficiency correction coefficient to obtain a temperature compensation correction value of the LED unit.
In this embodiment, the system presets a plurality of sets of temperature-light intensity characteristic curves, and analyzes the influence degree of temperature variation on light intensity by a curve fitting method.
Specifically, the deviation analysis unit calculates the light intensity change caused by temperature deviation by comparing the real-time temperature with a preset characteristic curve. The system adopts a piecewise linear fitting method to divide the temperature range into a plurality of intervals, and each interval adopts different compensation strategies. For example, in the range of 45 ℃ to 65 ℃, a quadratic curve fit is used to calculate the compensation correction value.
And the parameter generating unit is used for calculating the temperature compensation coefficient of the dual-spectrum emission system according to the temperature compensation correction value and the temperature compensation reference value to obtain the compensation parameter of the emission system.
In this embodiment, the system presets a compensation parameter optimization criterion, and the influence of the reference value and the correction value is comprehensively considered through a weighted calculation method.
Specifically, the parameter generating unit inputs the temperature compensation correction value and the reference value into a compensation parameter calculation model, and obtains a final temperature compensation coefficient through iterative optimization. For example, the system calculates a compensation factor in the range of-15% to +10% for adjusting the LED driving parameters based on the temperature characteristics of the different regions.
In one embodiment, referring to fig. 5, the drive control module specifically includes:
The difference detection unit is used for acquiring forward voltage and current data of the LEDs and calculating the real-time power variation value of the double-spectrum LED array.
In this embodiment, the difference detecting unit establishes an LED voltage-current characteristic database including VI characteristic curves under different temperatures and driving conditions. The system acquires the voltage at two ends of the LED and the current value flowing through the LED in real time through the high-precision sampling circuit, and obtains real-time power change by using a preset power calculation model.
And the characteristic analysis unit is used for determining the stepping adjustment parameters of the PWM dimming according to the power change value.
In this embodiment, the characteristic analysis unit builds a PWM dimming characteristic model, and a mapping relation database of power variation and PWM duty ratio is built in advance. The database contains threshold parameters of a plurality of dimming gears, and the system automatically matches the optimal dimming gear according to the power change value.
Specifically, the characteristic analysis unit inputs the power variation value into a preset gear dividing model, and determines the PWM adjustment parameter through piecewise linear interpolation. For example, the system divides the dimming range into 8 gears, and when the power variation value is in the range of 50-100mW, 4 gears are selected for adjustment, and the corresponding PWM duty cycle is 60%.
And the current adjusting unit is used for realizing the stepping adjustment of the driving current of the double-spectrum LED array through PWM waveform modulation according to the compensation parameter and the stepping adjustment parameter of the emission system.
In this embodiment, the current regulation unit integrates a PWM waveform control engine, and a current regulation policy bank is established. The system is preset with a plurality of groups of PWM waveform templates, and the duty ratio and the frequency of the waveform can be dynamically adjusted according to the step adjustment parameters, so that the accurate control of the LED driving current is realized.
And the feedback generation unit is used for collecting the regulated forward voltage and current data of the LED and generating real-time driving parameters.
In this embodiment, the feedback generation unit builds a driving parameter feedback model, and builds a real-time monitoring database. The system acquires the regulated VI characteristic data in real time through a high-speed data acquisition channel, and generates standardized driving parameters by utilizing a parameter extraction algorithm.
Specifically, the feedback generation unit performs real-time analysis on the collected voltage and current data, and generates driving parameters after preprocessing such as mean value filtering and outlier rejection.
In one embodiment, referring to fig. 6, the characteristic analysis unit specifically includes:
The power characteristic subunit is used for acquiring power change curves of the visible light LED and the infrared LED, analyzing power change rules of the double spectrums under different driving currents and establishing a power-current mapping model.
And the duty ratio calculating subunit is used for calculating the optimal PWM duty ratios corresponding to different power points according to the luminous efficiency curve and the power-current mapping model of the double-spectrum LED and generating a PWM waveform parameter table.
And the weight analysis subunit is used for establishing the brightness weight proportion of the visible light spectrum and the infrared light spectrum, calculating the comprehensive luminous flux when the double spectrums are used for cooperatively emitting light, and determining the dimming priority of each spectrum.
In this embodiment, the weight analysis subunit pre-establishes a spectral weight configuration database. The database stores optimal proportioning parameters of visible light and infrared spectrums in different application scenes, and the dimming priority of each spectrum is rapidly determined in a table look-up mode.
Specifically, the weight analysis subunit divides the brightness contribution rates of the visible light and the infrared light into a plurality of gears, such as fixed ratio configuration of 7:3, 6:4, and the like. For example, when a power change is detected, the system preferentially adjusts the spectrum with higher contribution rate according to preset weight, and then performs compensation adjustment on the secondary spectrum.
And the strategy generation subunit is used for establishing a mapping relation between the power change value and the PWM duty ratio according to the PWM waveform parameter table and the dimming priority and generating a self-adaptive stepping adjustment strategy.
In this embodiment, the policy generation subunit constructs a hierarchical adjustment policy repository, where the policy repository includes a PWM waveform parameter mapping table based on weight configuration. The system automatically selects the optimal adjusting gear according to the power change value and the spectrum weight through a recursive decision tree algorithm.
Specifically, the strategy generation subunit adopts a hierarchical table look-up structure, firstly determines the adjustment sequence of the primary spectrum and the secondary spectrum according to the weight, and then selects corresponding gears according to the power change value. For example, when the main spectrum needs to reduce output, the system looks up the table to obtain the corresponding PWM duty cycle, and adjusts the compensation parameters of the sub-spectrum in parallel.
In one embodiment, referring to fig. 7, the optical configuration module specifically includes:
and the parameter analysis unit is used for analyzing the real-time luminous flux and the spectral characteristics of the double-spectrum LED according to the real-time driving parameters.
And the lens adjusting unit is used for adjusting the gear of the light-splitting composite lens system based on the luminous flux and the spectral characteristics.
The pattern matching unit is used for matching the optimal matching pattern from a preset light intensity distribution pattern library according to different application scene requirements.
In this embodiment, the pattern matching unit creates a light intensity distribution pattern database in advance. The database stores the characteristic parameters of typical modes such as Gaussian distribution, uniform distribution and the like in various application scenes. The system calculates the similarity between the current light intensity distribution and a preset template through a pattern recognition algorithm, and selects the pattern with the highest matching degree.
Specifically, the pattern matching unit converts the light intensity distribution curve into a feature vector by adopting a feature vector comparison method, and determines an optimal matching pattern by calculating the Euclidean distance. For example, when close range illumination is required, the system will preferentially match the uniform distribution pattern, and when far range illumination is required, the center focused gaussian distribution pattern is matched.
The optical path optimizing unit is used for calculating the optimal divergence angle and the light intensity distribution of the double-spectrum light beam according to the optimal matching mode and generating an optical path configuration signal.
In this embodiment, the optical path optimization unit constructs an optical path parameter optimization model, and builds a divergence angle-light intensity distribution mapping relation database. The model integrates a ray tracing algorithm, and can rapidly calculate the optimal light path parameters according to the matching mode.
Specifically, the optical path optimization unit adjusts the divergence angle and the light intensity distribution until the target mode requirement is met through an iterative optimization method. For example, the system sets the divergence angle range to 10-60 degrees, and gradually adjusts the divergence angle range by a dichotomy until the light intensity distribution error is smaller than a preset threshold value, so as to finally generate the light path configuration parameters.
In one embodiment, referring to fig. 8, the lens adjusting unit specifically includes:
and the wavelength separation subunit is used for calculating the wavelength separation threshold value of the visible light and the infrared light according to the spectral characteristics and determining the spectral separation parameter of the light-splitting composite lens.
In this embodiment, the wavelength separation subunit establishes a wavelength separation parameter mapping table in advance, and the mapping table stores the correspondence between the spectral characteristics and the separation threshold under different working states. The mapping table adopts a hierarchical structure design, the spectrum characteristic parameter space is divided into a plurality of subareas, and each subarea is configured with a corresponding optimal separation threshold value and spectrum separation parameters. Meanwhile, the system establishes a separation parameter optimization model for rapidly positioning the optimal separation parameters when the spectrum characteristics fluctuate.
The wavelength separation subunit adopts a two-level parameter matching strategy, firstly calculates a feature vector according to the current spectral characteristics, matches the feature vector with a preset parameter interval to determine an initial separation parameter, and then carries out parameter fine adjustment based on spectral energy distribution to obtain a final separation threshold.
The gear control subunit is used for adjusting the gear angle of the light splitting composite lens according to the luminous flux distribution, wherein the gear angle is determined according to a preset luminous flux-angle mapping relation.
In this embodiment, the gear control subunit establishes a light flux distribution characteristic database in advance, where the database includes standard light flux distribution patterns in various typical application scenarios. The system adopts a pattern recognition algorithm to perform feature extraction on the real-time luminous flux distribution, and key parameters such as luminous flux size, spatial distribution and the like are obtained.
The gear control subunit adopts a hierarchical gear matching strategy, firstly performs characteristic analysis on luminous flux distribution, extracts main characteristic parameters, and then searches the most matched gear configuration in a preset database to determine a reference gear angle. For example, when it is detected that the luminous flux distribution changes, the system automatically searches the database for the distribution pattern with the highest similarity, and reads the corresponding gear angle parameter.
The optical path compensation subunit is used for analyzing optical path differences of the double spectrums in different gears, calculating optical path compensation amounts and dynamically adjusting the distance between the lens groups, wherein the lens group adjustment distance is calculated according to a preset optical path difference model.
In this embodiment, the optical path compensation subunit establishes an optical path difference compensation model in advance. The model comprises a double-spectrum optical path difference lookup table under different gear angles, and the system obtains theoretical compensation quantity through a lookup table mode. For example, when the shift angle is 15 degrees, the optical path difference between the visible light and the infrared light is δl, and the compensation distance that the lens group needs to adjust is kδl (k is a compensation coefficient).
Specifically, the optical path compensation subunit adopts a real-time correction algorithm, and automatically calculates the required compensation amount according to the current gear. The compensation process comprises two stages of coarse adjustment and fine adjustment, wherein standard compensation quantity is obtained by directly looking up a table according to gear angle during coarse adjustment, and the value of compensation coefficient k is finely adjusted through light spot overlapping degree feedback during fine adjustment.
And the light spot optimization subunit is used for calibrating the overlapping degree of the double-spectrum light spots according to the optical path compensation quantity.
In this embodiment, the spot optimization subunit constructs a spot overlapping degree evaluation model. The model defines a calculation method of the double-spectrum light spot overlapping degree, and the evaluation is carried out through two indexes of overlapping area ratio and energy distribution similarity.
Specifically, the spot optimization subunit continuously adjusts the compensation amount until the optimal overlapping effect is achieved in an iterative optimization mode, firstly calculates the current spot overlapping degree, fine-adjusts the compensation coefficient k, then evaluates the optimization effect, and continues iteration if the optimal effect does not reach the threshold value.
In one embodiment, referring to fig. 9, the zone control module specifically includes:
And the signal processing unit is used for acquiring the partition layout information of the double-spectrum LED array according to the light path configuration signal.
In this embodiment, the signal processing unit establishes a LED array layout feature database in advance, and the database stores standard layout patterns under different optical path configurations. The system adopts a signal analysis algorithm to extract the characteristics of the light path configuration signals and obtain key information such as parameters of light intensity distribution, divergence angle and the like.
Specifically, the system firstly performs feature analysis on the light path configuration signals to extract main control parameters, and then matches an optimal layout scheme in a preset database to obtain partition layout information of the LED array. For example, when a new light path configuration signal is received, the system automatically retrieves the layout mode with the highest similarity from the database, and determines the final layout parameters through a preset feature recognition algorithm.
The area dividing unit is used for carrying out area planning on the LED array according to the area layout information and determining the driving control range of each area.
Specifically, the system first determines an initial partitioning scheme based on layout information, and then adjusts the range of each region through a boundary optimization algorithm to generate a final driving control range. For example, when new layout information is acquired, the system automatically searches the model library for the best matching partition template, and determines specific control range parameters through a preset area division algorithm.
And the parameter calculation unit is used for calculating the driving current parameters of the LEDs in each area and generating current adjustment values required by basically uniform light emission.
Specifically, the system firstly determines a reference driving parameter according to the regional characteristics, and then finely adjusts the current value of each region through a compensation algorithm to realize a uniform luminous effect. For example, when determining a new zone division scheme, the system automatically retrieves the closest parameter configuration from the database and calculates the actual required current regulation value by means of a preset optimization algorithm.
And the instruction generation unit is used for adjusting the driving current of the LEDs in each region according to the current adjustment value, and combining the driving control range of each region to obtain the partition control parameters.
In this embodiment, the instruction generating unit establishes in advance a control instruction template library containing standard control instruction sets under different driving conditions. The system designs a command synthesizing algorithm for converting the current regulation value into a specific control command.
Specifically, the instruction generation unit adopts a hierarchical instruction generation strategy, firstly generates a basic control instruction according to a current regulation value, and then performs instruction optimization by combining a region control range to form a final partition control parameter. For example, when a new current adjustment value is obtained, the system automatically matches a corresponding instruction template in the template library, and determines a specific control parameter configuration through a preset instruction generation algorithm.
In one embodiment, referring to fig. 10, the power management module specifically includes:
And the power analysis unit is used for calculating the real-time power consumption of the LED array according to the partition control parameters to obtain the total power requirement of the system.
In this embodiment, the power analysis unit establishes a database of power consumption characteristics of the LED in advance, and the database includes power consumption models under different working conditions. The database adopts a self-adaptive structural design, establishes a mapping relation between the power characteristics and the working state, and supports real-time power consumption prediction. Meanwhile, the system builds a power compensation model for correcting power consumption deviation caused by factors such as temperature fluctuation and device aging, and the accuracy of power calculation is ensured.
The system calculates the LED basic power consumption based on the partition control parameters, compensates the actual power consumption deviation through a temperature-power correction model, and finally estimates the total power demand of the system by combining the driving circuit loss. For example, when the increase of power consumption caused by the temperature rise is detected, the system automatically calls the compensation model to correct, and meanwhile, the power change trend is predicted, so that a basis is provided for subsequent power supply management.
And the electric quantity monitoring unit is used for detecting the capacity state and the residual electric quantity of the battery and determining the available power supply duration.
And the mode selection unit is used for matching the corresponding power supply modes according to the total power requirement of the system and the available power supply duration.
In this embodiment, the mode selection unit establishes a power supply mode optimization database in advance, and the database stores optimal power supply strategies under various working scenarios. The system designs a self-adaptive decision algorithm, and dynamically adjusts the power supply mode according to the power demand and the power supply time length.
Specifically, the system firstly calculates the energy demand characteristics in the current working state, then matches the optimal power supply mode in a preset database, and determines a specific power supply strategy. For example, when the system needs to operate for a long time, it is automatically switched to the power saving mode, and the power supply time is prolonged by reducing the power of the partial area.
And the parameter output unit is used for generating power supply control parameters according to the power supply mode.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present application.
In one embodiment, the present application provides a lamp, the internal structure of which can be shown in fig. 11. The luminaire comprises a processor, a memory and a network interface connected by a system bus. Wherein the processor of the luminaire is for providing computing and control capabilities. The memory of the lamp comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the luminaire is used for storing data. The network interface of the lamp is used for communicating with an external terminal through network connection. The computer program when executed by the processor is configured to implement the steps performed by an infrared expandable portable navigational light system.
It will be appreciated by those skilled in the art that the structure shown in fig. 11 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the light fixture to which the present inventive arrangements are applied, and that a particular light fixture may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, there is also provided a luminaire comprising a memory in which a computer program is stored and a processor which, when executing the computer program, carries out the steps of the method embodiments described above.
Those skilled in the art will appreciate that implementing all or part of the above-described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in various forms such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc.
The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.
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| CN101263338A (en) * | 2005-07-15 | 2008-09-10 | 王晓路 | Novel lighting device for navigation |
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| CN118139230B (en) * | 2024-05-08 | 2024-07-19 | 深圳市伟创芯电子有限公司 | Intelligent self-detection lamp brightness adjusting method, device and system |
| CN118886311A (en) * | 2024-07-10 | 2024-11-01 | 衡水学院 | Design method of temperature feedback intelligent regulation LED spectrum lamp |
| CN118973015A (en) * | 2024-10-16 | 2024-11-15 | 深圳市易邦裕光电有限公司 | Lamp bead luminescence graded regulation control method and system |
| CN119292376B (en) * | 2024-12-09 | 2025-03-04 | 深圳市金鼎胜光电股份有限公司 | Temperature control method, device and equipment for multi-wavelength LED detection light source |
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| CN101263338A (en) * | 2005-07-15 | 2008-09-10 | 王晓路 | Novel lighting device for navigation |
| CN103957639A (en) * | 2014-05-09 | 2014-07-30 | 电子科技大学 | Temperature compensating circuit used for LED |
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