A fiber bundle single-color illumination system

Abstract

This invention relates to the field of fiber optic lighting technology and discloses a fiber optic bundled monochromatic lighting system. The system includes a power supply unit, a control unit, a light source array unit, an optical coupling unit, a fiber optic bundle unit, and a scheduling and management unit. The light source array unit contains multiple independently controllable LED modules. The optical coupling unit couples the light from each LED module into an optical fiber. The fiber optic bundle unit bundles the output ends of multiple optical fibers to form an integrated light-emitting end face. The scheduling and management unit parses external commands and, based on task requirements and a system resource status table, intelligently selects one or more optimal LED modules to operate through an evaluation function. This invention achieves flexible and adjustable brightness and multiplication, balances module load through intelligent scheduling, improves system lifespan and stability, and possesses online luminous efficacy calibration and seamless switching capabilities.

Description

Technical Field

[0001] This invention relates to the field of fiber optic lighting technology, and more specifically to a fiber optic bundled monochromatic lighting system. Background Technology

[0002] In high-end applications such as precision manufacturing, biomedical imaging, and semiconductor testing, there are extremely high requirements for the brightness, uniformity, stability, and lifespan of monochromatic light sources. Traditional single-point high-power LED lighting solutions are limited by the luminous flux limit of a single light-emitting unit, making it difficult to meet the ever-increasing demand for ultra-high brightness. Furthermore, under high loads and prolonged operation, the junction temperature of traditional high-power LEDs rises, leading to rapid luminous efficiency decay and severely shortening their lifespan. To achieve high brightness, a common approach is to use multiple LEDs arranged in an array; however, this approach is optically complex, making it difficult to achieve uniform light output, and ensuring consistency in brightness and color temperature among multiple LEDs is challenging.

[0003] In existing technologies, multi-source polling or redundant backup schemes are often used to improve reliability and extend system lifespan. For example, different LED modules in the array are cyclically activated by the control circuit to average the workload. However, this simple polling scheduling method fails to consider the uneven performance degradation (such as luminous efficacy decay and lifespan consumption) of each LED module due to manufacturing tolerances and differences in working history. As a result, although all modules have similar cumulative working time, some modules may fail prematurely due to prolonged operation at unsuitable operating points, while others may remain idle for extended periods, failing to be fully utilized. This essentially results in the overall system lifespan not reaching the theoretically optimal value. Furthermore, in scenarios requiring multiple light sources to work collaboratively to meet dynamic, high-brightness lighting demands, existing technologies lack intelligent and refined energy allocation strategies for multi-source aggregated output. They typically employ simple same-parameter drives, failing to optimize current allocation based on the real-time status of each light source (such as luminous efficacy and temperature), leading to low aggregation efficiency, increased system power consumption, and accelerated aging of some light sources.

[0004] In terms of light output control, traditional driver circuits mostly adopt a "hard switching" mode. When turning on, off, or switching lighting modes, the step change in drive current can cause instantaneous overshoot and high-frequency oscillations in the light source output, resulting in unstable light output. This makes it difficult to meet the stringent requirements of high-speed lighting applications with strict timing accuracy and stability. In addition, most existing systems lack online monitoring and compensation mechanisms for LED luminous efficacy decay. As the operating time accumulates, the light output decay caused by LED aging and temperature drift cannot be corrected in real time. The luminous flux output by the system will gradually deviate from the set value, resulting in poor long-term operational stability. Summary of the Invention

[0005] The technical problem to be solved by this invention includes at least one of the following:

[0006] How to overcome the upper limit of brightness of a single light source and achieve stable and efficient high-brightness monochromatic lighting output.

[0007] How to avoid load imbalance caused by improper scheduling strategies in multi-source systems, thereby improving the overall reliability and service life of the system.

[0008] How to intelligently allocate light energy based on the real-time status of each light source when multiple light sources work together, so as to optimize system efficiency.

[0009] How to achieve high-speed and smooth switching of lighting modes, eliminate instantaneous jitter and overshoot in light output, and improve the stability of sequential lighting.

[0010] How to calibrate the light source's luminous efficacy attenuation online in order to maintain the system's long-term light output accuracy and stability.

[0011] To address the aforementioned technical problems, the present invention provides the following technical solutions.

[0012] A fiber optic bundled monochromatic illumination system, characterized in that it comprises:

[0013] Power supply unit;

[0014] Control unit;

[0015] The light source array unit contains at least two independently controllable monochromatic light-emitting diode modules;

[0016] An optical coupling unit is independently configured for each of the monochromatic light-emitting diode modules;

[0017] The fiber optic bundle unit includes multiple fiber optic transmission channels. The input ends of all fiber optic channels correspond to the output ends of each optical coupling unit. The output ends of the fiber optic channels are bundled together to form an integrated light-emitting end face.

[0018] Allocation and management unit;

[0019] The power supply unit is connected to the control unit and the light source array unit;

[0020] The control unit is connected to the allocation and management unit and the light source array unit;

[0021] The allocation management unit is used to receive and parse external task instructions, and generate resource allocation strategies based on the task instructions and the system resource status table. The system resource status table records the working status, remaining estimated lifetime, and current light output efficiency of each monochrome light-emitting diode module.

[0022] The resource allocation strategy is generated as follows: In single-source allocation mode, based on the single-channel luminous flux requirement, resources are allocated from idle monochromatic LED modules according to the comprehensive evaluation function F. s Select one module to work; in the multi-source aggregation and allocation mode, select at least two modules from the idle modules to form a subset, and allocate drive current to each module in the subset so that its total light output meets the single-channel light flux requirement.

[0023] In a preferred embodiment of the present invention, the allocation management unit is embedded in or interconnected with the control unit.

[0024] In a preferred embodiment of the present invention, the system resource status table also records the working matching status and historical usage duration of each optical fiber channel.

[0025] In a preferred embodiment of the present invention, the comprehensive evaluation function F s The value of is positively correlated with the current luminous efficacy retention rate of the monochrome LED module and negatively correlated with the lifetime consumption rate.

[0026] In a preferred embodiment of the present invention, in the multi-source aggregation and allocation mode, the decision objective of the allocation management unit is to minimize the total power consumption or to make the lifetime consumption among the sub-modules most balanced.

[0027] In a preferred embodiment of the present invention, the allocation management unit uses a heuristic algorithm to solve the problem, including: arranging the idle modules in descending order of their current unit current luminous efficacy, and sequentially selecting modules to add to the subset until the total luminous flux of the subset under the preset safe current reaches or exceeds the requirement.

[0028] In a preferred embodiment of the present invention, the allocation management unit is further used for time-domain scheduling, parsing the task instruction into lighting sub-events arranged on the time axis, and independently executing resource allocation decisions for each sub-event.

[0029] In a preferred embodiment of the present invention, the control unit incorporates ramp-up or ramp-down time when the drive current changes.

[0030] In a preferred embodiment of the present invention, the allocation management unit is further configured to update the current light output efficiency of the monochromatic light-emitting diode module based on the driving current and junction temperature using an online luminous efficacy calibration estimation algorithm.

[0031] In a preferred embodiment of the present invention, the integrated light-emitting end face of the optical fiber bundle unit is provided with a standardized physical interface.

[0032] The resource allocation strategy is based on two inputs: first, the lighting locations, luminous flux, and timing requirements specified by external task instructions; and second, the resource status table maintained in real time within the system, which records parameters such as the operating conditions, lifespan, and luminous efficacy of each LED module.

[0033] The resource allocation strategy is specifically as follows: based on the comparison between the required luminous flux and the maximum capacity of a single module, it operates in two modes. In the single-source allocation mode, the strategy uses a comprehensive evaluation function (F... s The strategy selects the best from idle modules. When demand exceeds the capacity of a single module, the strategy enters a multi-source aggregation allocation mode. The goal is to select a subset of idle modules whose aggregated luminous flux meets the demand, while optimizing energy efficiency or load. This mode employs a heuristic algorithm, first sorting and initially screening modules by luminous efficacy per unit current, then allocating differentiated drive currents to each module in the subset through optimization calculations. This allows modules with high luminous efficacy to bear more load, thereby achieving efficient aggregation.

[0034] In addition, the strategy has advanced time-domain scheduling capabilities, which can decompose complex tasks into time-series sub-events and allocate resources independently, and switch lighting modes by introducing ramp control when the drive current changes.

[0035] To ensure long-term accuracy, the strategy also integrates an online luminous efficacy calibration mechanism, which can correct the luminous efficacy parameters in real time based on the module's drive current and junction temperature, and dynamically compensate for aging and drift.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] The fiber optic bundle structure allows the light energy from multiple independent light sources to be incoherently superimposed at the light-emitting end face, thus enabling flexible configuration according to needs. It can achieve single-point conventional lighting, or break through the brightness limit of a single light source through multi-light source aggregation to meet the needs of ultra-high brightness lighting, and the light output is uniform and stable.

[0038] The allocation management unit intelligently selects light source modules based on a comprehensive evaluation function. This function considers both the luminous efficacy retention rate and lifespan consumption rate of the modules, achieving load balancing scheduling. This avoids the problem of some modules being overused while others are idle for a long time, thereby improving the reliability of the entire light source array and extending the system's mean time between failures (MTBF).

[0039] In the multi-source aggregation mode, a heuristic optimization algorithm based on the real-time luminous efficacy of each module is used to allocate the driving current, so that the modules with high luminous efficacy can undertake more work, thereby optimizing the system energy efficiency and reducing the overall power consumption while meeting the total luminous flux requirements.

[0040] By employing a current ramp control strategy during lighting mode switching and reserving parameter switching response time, a seamless and smooth transition of lighting states is achieved, effectively suppressing instantaneous overshoot and high-frequency oscillation of light output.

[0041] Through an online luminous efficacy calibration mechanism, the actual luminous efficacy parameters of each light source module are monitored and updated in real time, and the driving current is dynamically adjusted accordingly to compensate for the light output attenuation caused by factors such as LED aging and temperature changes. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of the fiber optic bundled monochromatic illumination system provided by the present invention.

[0043] Figure 2 This is a schematic representation of the system resource status in an embodiment of the present invention.

[0044] Figure 3 This is a box plot comparing the remaining lifetime distribution of LED modules under different scheduling strategies in an embodiment of the present invention.

[0045] Figure 4 This is a schematic diagram of the luminous flux-driving current characteristic curves under single / multi-source aggregation mode in an embodiment of the present invention.

[0046] Figure 5 This is a schematic diagram of the light output stability comparison curves under high-speed sequential lighting scenarios in an embodiment of the present invention.

[0047] Figure 6 This is a schematic diagram showing the comparison curves of the long-term working luminous flux stability of the system in this embodiment of the invention. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0049] 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.

[0050] like Figure 1 As shown, the first embodiment of the present invention provides a fiber optic bundled monochromatic lighting system, including: a power supply unit 1, a control unit 2, a light source array unit 3, an optical coupling unit 4, a fiber optic bundled unit 5, and a scheduling and management unit 6.

[0051] The power supply unit 1 is used to provide power to each power-consuming module in the system.

[0052] The control unit 2 is connected to the allocation and management unit 6 and the light source array unit 3.

[0053] The light source array unit 3 includes at least two independently controllable monochrome light-emitting diode modules (hereinafter referred to as LED modules) to provide multiple independent light sources for the system.

[0054] The optical coupling unit 4 is independently set for each monochrome light-emitting diode module and is used to focus and shape the light emitted by the corresponding monochrome light-emitting diode module and guide it into the optical fiber path.

[0055] The fiber optic bundle unit 5 includes multiple fiber optic transmission channels. The input ends of all fiber optic channels are respectively connected to the output ends of each optical coupling unit 4. The output ends of the fiber optic channels are bundled together to form an integrated light-emitting end face, which can be directly connected to the illuminated target.

[0056] The allocation management unit 6 is embedded in or interconnected with the control unit 2. It is used to receive and parse external task instructions, and generate specific resource allocation strategies according to the instruction requirements and the current system status. The strategies include assigning working states to each monochrome LED module, setting driving parameters, and matching light output modes.

[0057] The output of power supply unit 1 is connected to the power input of control unit 2 and light source array unit 3. Control unit 2 includes a drive control interface and is individually connected to each monochromatic light-emitting diode module in light source array unit 3 through a constant current drive circuit, enabling independent control of the switching state, drive current magnitude, and operating timing of each monochromatic light-emitting diode module. Allocation management unit 6 communicates bidirectionally with control unit 2, receiving task commands from external system communication interfaces (such as Ethernet or serial communication interfaces), and sending the analyzed and calculated light energy allocation strategy to control unit 2 for execution. Simultaneously, allocation management unit 6 obtains real-time information from control unit 2 regarding the operating status of light source array unit 3 (such as temperature, current feedback, luminous efficiency loss, and operating time). The emitting surface of each monochromatic light-emitting diode module faces the input of the corresponding independent optical coupling unit 4, and the output of each optical coupling unit 4 is fixedly connected to the input of each fiber channel of the fiber optic bundle unit 5, forming multiple independent and stable fixed optical paths. The fiber optic bundle unit 5 arranges and fixes multiple input optical fibers at the output end to form an integrated light-emitting end face. This end face is stably connected to the illuminated equipment through a standardized physical interface, providing the equipment with a monochromatic lighting source with fixed point, fixed intensity, and fixed timing.

[0058] The allocation management unit 6 receives an external task instruction, which includes at least one or more of the following: target lighting point identifier, required luminous flux parameters, and lighting timing requirements. Internally, the allocation management unit 6 includes a system resource status table. This table records in real-time the operating status, remaining estimated lifetime, and current optical output efficiency of each monochrome LED module, as well as the operating matching status and historical usage time of each fiber optic channel. An illustrative system resource status table is shown below. Figure 2 As shown. After parsing the task instructions, the allocation and management unit 6 will initiate a resource matching and intelligent scheduling decision-making process, matching the optimal light source working mode and parameters according to the lighting requirements.

[0059] The decision-making process is used to solve the problem of optimal resource allocation that meets task requirements under constraints.

[0060] The allocation and management unit 6 first determines the output area (i.e., the target lighting channel) of the fiber optic bundle unit 5 that needs to be activated based on the target lighting point in the external task instruction.

[0061] Next, it assesses the single-channel optical throughput requirement Φ need If Φ need Less than or equal to a single monochrome LED module at its rated operating current I rated The maximum effective luminous flux Φ that can be provided below LEDmax Then it enters the single light source allocation mode.

[0062] In single-source allocation mode, the allocation management unit 6 selects from the currently idle set of monochrome LED modules based on the comprehensive evaluation function F. s Select the optimal one. This comprehensive evaluation function F... s Taking into account the module's light efficiency attenuation and load balance, one illustrative representation is as follows: , where η current η represents the current luminous efficacy of this monochrome LED module. initial Its initial luminous efficacy, the ratio of which reflects the luminous efficacy retention rate; T operational T represents the total working time of the module. lifeexpectancy The estimated lifespan is calculated, and the ratio of the two values ​​reflects the lifespan consumption rate; α and β are preset non-negative weighting coefficients, and α+β=1.

[0063] The allocation management unit 6 calculates the F of each module in the set. s Value, and select F s The module with the highest value is selected as the candidate light source.

[0064] Figure 3This is a box plot comparing the remaining lifetime distribution of LED modules under different scheduling strategies in this invention embodiment. The horizontal axis represents three typical scheduling strategies. As shown in the figure, under the optimized scheduling strategy of this invention, the remaining lifetime distribution of LED modules is highly concentrated, with a box range (upper and lower quartiles) of approximately 78% to 83% and a median of approximately 80%. The data dispersion is extremely low, with only a single slight outlier, indicating that the workload of each module is evenly distributed, with no modules being overused or idle for extended periods, and minimal differences in remaining lifetime between modules. In contrast, under the traditional polling scheduling strategy, the box range of the remaining lifetime distribution of LED modules is approximately 50% to 74%, with a median of approximately 65%. The data dispersion is increased, and the remaining lifetime of some modules has dropped below 43%. The traditional full-power scheduling strategy has the highest dispersion, with a box range of approximately 47% to 77% and a median of only about 58%. It also exhibits numerous extreme values, with the remaining lifetime of some modules less than 15%, and some modules showing severe aging due to long-term high-load operation, resulting in a significant difference in lifetime between them and other modules. This difference stems from the comprehensive evaluation function adopted by the allocation management unit 6 of this invention. This function considers both the current luminous efficacy retention rate and the lifespan consumption rate of the LED module, and prioritizes the selection of modules with high luminous efficacy and low lifespan consumption to participate in the work. This avoids the mechanical cyclic allocation of traditional polling scheduling and the blind high-load drive of full-power scheduling, and realizes load balancing among modules, thereby improving the overall reliability and service life of the system and reducing the risk of premature module failure.

[0065] Subsequently, the allocation and management unit 6 issues a control command to activate the optical path channel corresponding to the selected monochrome LED module. Simultaneously, the control unit 2, based on Φ... need Calculate the required drive current I drive The calculation formula takes into account the photoelectric characteristic curve of the light-emitting diode. An approximate calculation formula is as follows: ,in This is an exponential factor related to the characteristics of the light-emitting diode, typically greater than 1.

[0066] Finally, control unit 2 applies I to the monochrome LED module. drive An electric current is used to make it emit light stably, and a lighting source with corresponding brightness is output through a fixed optical path.

[0067] When the allocation management unit 6 assessed and found that the single-channel optical flux requirement Φ need Φ is greater than that of a single monochromatic light-emitting diode module LEDmax When this happens, the multi-source aggregation and allocation mode is activated.

[0068] In the multi-source aggregation and allocation mode, the allocation management unit 6 selects at least two monochromatic light-emitting diode modules from the idle modules, simultaneously activating multiple independent optical paths. Through the beam-gathering structure of the fiber optic bundle unit 5, the light energy of the multiple optical paths is superimposed and converged to the same target illumination point, achieving single-point high-brightness illumination. The decision objective of the allocation management unit 6 becomes: selecting a subset S from the set of idle modules such that the total effective luminous flux provided by all modules in this subset, without exceeding their respective maximum safe current, is... ( For the i-th LED module selected into the aggregation subset, the effective luminous flux that can be output under the allocated drive current satisfies Φ need Simultaneously, it optimizes a specific objective, such as minimizing total power consumption or balancing the lifetime consumption among modules in the subset. This can be formalized as an optimization problem. The allocation management unit 6 uses a heuristic algorithm to solve it. For example, it first calculates the luminous efficacy η per unit current for all idle modules. i (Right now I i The driving current allocated to the i-th LED module (i.e., the driving current value applied to the module by the control unit) is sorted in descending order. Then, starting from the top of the list, modules are selected sequentially and added to subset S, and the total luminous flux of the current subset under the preset safe current is estimated. When the total luminous flux first reaches or exceeds Φ... need The selection process stops at this point. Next, in order to satisfy Φ... need To optimize efficiency, the allocation management unit 6 calculates a distribution current for each module in subset S. One allocation principle is to allow modules with high luminous efficacy to handle as much current as possible, while ensuring the total luminous flux requirement is met.

[0069] This can be achieved by solving the following system of equations to obtain a better solution:

[0070] And for each module i in subset S, we have C i I represents the characteristic coefficient of each module. maxi The maximum safe current is determined by the allocation management unit 6. Then, a control command is generated: Control unit 2 synchronously activates all monochrome LED modules in subset S, applying the corresponding ratio to each module. Drive current. The light emitted by the multiple modules is shaped and focused by the independent optical coupling unit 4, and then converged and superimposed by the fiber optic bundle unit 5 to achieve incoherent light energy aggregation at the target illumination point, breaking through the upper limit of single light source brightness and meeting the requirements of ultra-high brightness lighting.

[0071] Figure 4This is a schematic diagram of the luminous flux-driving current characteristic curves in single / multi-source aggregation modes according to an embodiment of the present invention. The three curves in the figure correspond to the output characteristics of a single LED module, a 2-LED aggregation mode, and a 3-LED aggregation mode, respectively. The curve for the single LED module reflects the inherent photoelectric characteristics of a single monochrome LED module under different driving currents, while the curves for the 2-LED and 3-LED aggregation modes demonstrate the actual effect of the multi-source on-demand aggregation scheme of the present invention. As can be seen from the figure, under the same driving current conditions, the system output luminous flux increases proportionally with the number of LED modules participating in aggregation: when the driving current is 700mA, the output luminous flux of a single LED module is approximately 1000lm, the output luminous flux in the 2-LED aggregation mode is approximately 2000lm, and the output luminous flux in the 3-LED aggregation mode can reach approximately 3000lm, achieving a step-wise multiplication of output brightness. Simultaneously, all three curves exhibit the typical nonlinear photoelectric response characteristics of monochrome LEDs, i.e., the output luminous flux increases exponentially with the driving current (exponential factor approximately 1.2), the luminous flux growth rate is relatively slow in the low-to-medium current range, and the growth rate accelerates when approaching the rated current.

[0072] For complex lighting tasks involving multiple locations and different time sequences, the dispatch management unit 6 also possesses time-domain scheduling capabilities. It can parse task instructions into a series of "lighting sub-events" arranged on a timeline, each sub-event specifying a specific time period [t]. start ,t end Within a given sub-event, the luminous flux requirements for one (or several) channels are specified. The allocation management unit 6 independently executes the aforementioned resource allocation decisions for each sub-event. During the intervals between successive sub-events, the allocation management unit 6 reserves response time for light source parameter switching, achieving seamless switching of lighting modes by smoothly adjusting the drive current and time-sharing start / stop of the light source modules. Simultaneously, it considers the switching transient characteristics of the monochromatic LED module, adding appropriate ramp-up or ramp-down times when the drive current changes to protect the devices and reduce light output jitter.

[0073] Figure 5 This diagram illustrates the comparison of light output stability in a high-speed sequential lighting scenario according to an embodiment of the present invention. The solid blue line represents the light output curve of the current ramp control scheme used in this invention, while the dashed red line represents the light output curve of the traditional hard-switching control scheme. As can be seen from the figure, the light output curve of the present invention exhibits a smooth, sloping upward trend, steadily rising from the initial value to the target value of 1.0 within approximately 40 μs, with no significant overshoot during the rise, and the steady-state fluctuation amplitude is controlled within ±1%. In contrast, the light output of the traditional hard-switching control scheme experiences a peak overshoot of up to 20% at the moment of activation, followed by violent high-frequency oscillations near the target value, with the fluctuation amplitude remaining above ±5% for a long period, failing to stabilize quickly.

[0074] Furthermore, the control unit 2 continuously monitors the forward voltage, drive current, and temperature sensor data for each monochrome LED module. The allocation management unit 6 periodically (e.g., every 100 hours) reads this data from the control unit 2 and updates its internal system resource status table. The luminous efficacy η of the monochrome LED module... current It can be updated using an online luminous efficacy calibration estimation algorithm, which is based on the measured drive current I. meas Estimated junction temperature T of the light-emitting diode j And an empirical model of the light decay characteristics of this type of LED.

[0075] A simplified update method is: η current =η initial ·f(T j )·g(I meas ). Where f(T) j ) is the decay function describing the luminous efficacy as a function of junction temperature, g(I) meas η is a function describing the change in luminous efficacy with current; these functions can be obtained through pre-calibration. η is updated in real time. current In subsequent decision-making, the allocation management unit 6 can more accurately predict the actual optical output capability of each module, thereby making the allocation strategy more precise and efficient.

[0076] Figure 6 This diagram illustrates the long-term operational luminous flux stability comparison curves of the system according to the present invention. The solid green line represents the scheme with the online luminous efficacy calibration mechanism of the present invention, while the dashed red line represents the traditional scheme without calibration. As can be seen from the diagram, the luminous flux deviation rate of the present invention remains consistently within ±3%, with minimal curve fluctuation and no significant drift over time. In contrast, the deviation rate of the traditional scheme shows a continuous upward trend with accumulated operating time. Initially, the deviation rate is approximately ±2%, increasing to ±9% after 400 hours of operation, and exceeding ±15% at 1000 hours, indicating a significant increase in fluctuation. This difference stems from the online luminous efficacy calibration mechanism of the allocation management unit 6 in the present invention. This mechanism uses a luminous efficacy update model based on LED junction temperature and drive current to correct the current luminous efficacy parameters of the module in real time and dynamically adjust the drive current accordingly to compensate for light output attenuation caused by LED aging, temperature drift, and other factors. The traditional scheme, however, uses fixed drive current control, which cannot compensate for light decay and temperature effects during long-term operation, leading to a continuous accumulation of luminous flux deviation and a sustained decrease in control accuracy.

[0077] The working process of the fiber optic bundled monochromatic illumination system provided by this invention is as follows:

[0078] Upon system power-on initialization, control unit 2 and dispatch management unit 6 complete self-tests, all monochrome LED modules enter standby off state, and the system restores its initial default operating parameters. Dispatch management unit 6 continuously awaits external task commands.

[0079] Upon receiving the task instruction, the allocation and management unit 6 analyzes the instruction content, clarifies parameters such as the target lighting location, luminous flux requirement, and working sequence, and determines the lighting task requirements.

[0080] Next, the allocation management unit 6 queries the internal resource status table and determines the working mode based on the lighting brightness requirements. For standard brightness requirements, it enters a single-source allocation mode, while for ultra-high brightness requirements, it enters a multi-source aggregation allocation mode. In the selected mode, the allocation management unit 6 uses the corresponding evaluation function and optimization algorithm to select suitable combinations of monochrome LED modules and accurately calculates the optimal operating current parameters for each module.

[0081] Subsequently, the allocation management unit 6 generates a control sequence containing light source start / stop commands, current drive parameters, and working timing, and sends it to the control unit 2 for execution. The control unit 2 applies a matching drive current to the designated monochromatic LED module via a constant current drive circuit, driving the module to emit light stably. After light is emitted from the LED, it undergoes shaping and focusing processing by the corresponding optical coupling unit 4, and is transmitted through a fixed optical fiber path to the optical fiber bundle unit 5. After being bundled and focused, the light is output from the light-emitting end face, illuminating the target lighting area. During the lighting task execution, the control unit 2 continuously monitors the electrical parameters and temperature status of each working module and feeds the data back to the allocation management unit 6 in real time, achieving dynamic monitoring and parameter fine-tuning. When the task time ends or a new change command is received, the allocation management unit 6 initiates a task switching process, gradually reducing the light source drive current, shutting down the corresponding module, resetting the working parameters, and preparing for resource allocation for the next task, allowing the system to enter the next working cycle.

[0082] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0083] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fiber optic bundled monochromatic lighting system, characterized in that, include: Power supply unit (1); Control unit (2); The light source array unit (3) includes at least two independently controllable monochromatic light-emitting diode modules; An optical coupling unit (4) is independently provided for each of the monochrome light-emitting diode modules; Allocation and management unit (6); The power supply unit (1) is connected to the control unit (2) and the light source array unit (3); The control unit (2) is connected to the allocation management unit (6) and the light source array unit (3); The allocation management unit (6) is used to receive and parse external task instructions, and generate resource allocation strategies according to the task instructions and the system resource status table. The system resource status table records the working status, remaining estimated lifetime and current light output efficiency of each monochrome light-emitting diode module. The resource allocation strategy is generated as follows: In single-source allocation mode, based on the single-channel luminous flux requirement, idle monochromatic light-emitting diode modules are selected according to a comprehensive evaluation function. F s Select a module to work; In the multi-source aggregation and allocation mode, at least two modules are selected from the idle modules to form a subset, and driving current is allocated to each module in the subset so that its total light output meets the single-channel light flux requirement.

2. The fiber optic bundled monochromatic illumination system according to claim 1, characterized in that, The allocation management unit (6) is embedded in or interconnected with the control unit (2).

3. The fiber optic bundled monochromatic illumination system according to claim 1, characterized in that, The system resource status table also records the working matching status and historical usage duration of each fiber optic channel.

4. The fiber optic bundled monochromatic illumination system according to claim 1, characterized in that, The comprehensive evaluation function F s The value of is positively correlated with the current luminous efficacy retention rate of the monochrome LED module and negatively correlated with the lifetime consumption rate.

5. The fiber optic bundled monochromatic lighting system according to claim 1, characterized in that, In the multi-source aggregation and allocation mode, the decision objective of the allocation management unit (6) is to minimize the total power consumption or to make the lifetime consumption among the modules in the sub-group most balanced.

6. The fiber optic bundled monochromatic lighting system according to claim 5, characterized in that, The allocation management unit (6) uses a heuristic algorithm to solve the problem, including: arranging the idle modules in descending order of their current unit current luminous efficacy, and selecting modules to add to the subset in turn, until the total luminous flux of the subset under the preset safe current reaches or exceeds the requirement.

7. The fiber optic bundled monochromatic lighting system according to claim 1, characterized in that, The allocation management unit (6) is also used for time-domain scheduling, parsing the task instructions into lighting sub-events arranged on the time axis, and independently executing resource allocation decisions for each sub-event.

8. The fiber optic bundled monochromatic lighting system according to claim 1, characterized in that, The control unit (2) incorporates ramp-up or ramp-down time when the drive current changes.

9. The fiber optic bundled monochromatic lighting system according to claim 1, characterized in that, The allocation management unit (6) is also used to update the current light output efficiency of the monochrome light-emitting diode module by means of an online light efficiency calibration estimation algorithm based on the driving current and junction temperature of the module.

10. The fiber optic bundled monochromatic illumination system according to claim 1, characterized in that, It also includes an optical fiber bundle unit (5), which contains multiple optical fiber transmission channels. The input ends of all optical fiber channels correspond to the output ends of each optical coupling unit (4). The output ends of the optical fiber channels are bundled together to form an integrated light-emitting end face. The integrated light-emitting end face is provided with a standardized physical interface.

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