Multifunctional adjustable track lamp and illumination control method thereof

Abstract

The invention relates to the technical field of LED illumination and provides a multifunctional adjustable track lamp and a control method thereof in order to solve the problem that multi-dimensional flexible adjustment of color temperature, brightness and beam angle of an existing track lamp is difficult to realize. The track lamp comprises a lamp body, the lamp body comprises an LED light source and a connecting structure used for being connected with a guide rail, and the LED light source comprises LED lamp beads with different color temperatures; the beam angle adjusting assembly is arranged in the lamp body and used for adjusting the beam angle of the LED light source; the light source adjusting assembly is electrically connected with the LED light source and comprises a color temperature adjusting module, a power adjusting module and a power supply module; the power supply module is electrically connected with the color temperature adjusting module, the color temperature adjusting module and the power adjusting module, and the color temperature adjusting module is used for selectively controlling the lightening states of the LED lamp beads with different color temperatures or adjusting the brightness proportion of the LED lamp beads with different color temperatures so as to obtain target color temperature output; and the power adjusting module is used for adjusting the driving current or power output of the LED light source.

Description

Technical Field

[0001] This invention relates to the field of LED lighting technology, and in particular to a multifunctional adjustable rail light and its lighting control method. Background Technology

[0002] With the continuous development of lighting technology, LED light sources have been widely used in commercial and residential lighting due to their advantages such as high efficiency, energy saving, and long lifespan. Track lights, as a flexible and easy-to-install lighting product, allow for free adjustment of the position and number of lights as needed, making them suitable for various occasions such as exhibition halls, shopping malls, and museums. However, existing track lights still have certain shortcomings in terms of lighting performance, function adjustment, and user experience.

[0003] Traditional track lights mostly use single-color-temperature LED light sources, providing users with a fixed lighting effect that is difficult to adjust flexibly according to scene requirements. Furthermore, existing track lights offer limited brightness adjustment methods, mostly relying on simple switches or single-channel dimming, failing to precisely adjust brightness based on different application environments and user needs. While some products offer some beam angle adjustment capabilities, the adjustment range is limited, and their complex structural design makes them inconvenient to operate.

[0004] Furthermore, traditional track lights often lack multi-functional adjustment components, making it difficult to simultaneously and flexibly control color temperature, brightness, and beam angle. Their power supply design is also relatively simple, failing to effectively accommodate multiple adjustment methods. These shortcomings limit the application of track lights in high-end commercial lighting, exhibition lighting, and other venues with high requirements for light quality and flexibility.

[0005] Therefore, there is an urgent need for a new type of multifunctional adjustable track light that is compact in structure, rich in functions, can achieve multi-dimensional adjustment of color temperature, brightness and beam angle, and has a high-efficiency power supply module, so as to meet the modern lighting needs for diversified, personalized and intelligent lighting environments. Summary of the Invention

[0006] In view of this, embodiments of the present invention provide a multifunctional adjustable rail light and its lighting control method to solve the problem that existing rail lights are difficult to flexibly adjust in multiple dimensions such as color temperature, brightness and beam angle.

[0007] In a first aspect, embodiments of the present invention provide a multifunctional adjustable rail light, comprising: The lamp body includes an LED light source and a connection structure for connecting to a guide rail, wherein the LED light source includes LED beads with different color temperatures; A beam angle adjustment component is disposed in the lamp body and is used to adjust the beam angle of the LED light source; A light source adjustment component is electrically connected to the LED light source, and the light source adjustment component includes a color temperature adjustment module, a power adjustment module, and a power supply module; The power supply module is electrically connected to the color temperature adjustment module and the power adjustment module. The color temperature adjustment module is used to selectively control the lighting state of LED beads with different color temperatures or adjust the brightness ratio of each color temperature LED bead to obtain the target color temperature output. The power adjustment module is used to adjust the driving current or power output of the LED light source.

[0008] Preferably, the beam angle adjustment assembly includes a focusing ring, an optical lens, and a frog-eye lens. The focusing ring is used to drive the optical lens or frog-eye lens to move relative to the LED light source along the optical axis to adjust the beam angle. The adjustment range of the beam angle is 24° to 63°.

[0009] Preferably, the LED light source includes at least two sets of LED beads with different color temperature channels. The color temperature adjustment module includes a color temperature DIP switch and a current switching circuit. The current switching circuit is connected to the color temperature DIP switch. The current switching circuit includes a switching network consisting of switching devices corresponding to each color temperature channel and a current control resistor. The color temperature DIP switch is used to selectively connect / disconnect the switching network or change its connection method, thereby changing the current distribution of different color temperature channels and adjusting the brightness ratio and color temperature of the LED beads.

[0010] Preferably, the power adjustment module includes a multi-level current adjustment circuit, which consists of multiple first resistors and corresponding switching devices forming multiple current paths, each current path corresponding to a current level; the power adjustment module also includes a power DIP switch for selecting different current paths to adjust the driving current of the LED light source and change the output power.

[0011] Preferably, the power DIP switch is connected to the control terminals of multiple gating switching devices, and the multiple current paths each include a second resistor connected in series and a corresponding gating switching device; the power DIP switch is used to selectively turn on the gating switching devices, so that the corresponding current path is connected to or disconnected from the constant current control loop, thereby adjusting the driving current and power output of the LED light source.

[0012] Preferably, the light source adjustment component further includes a main control chip, which is connected to a feedback control circuit. The feedback control circuit includes a feedback resistor and is used to acquire the operating current of the LED light source and transmit it to the main control chip. The main control chip adjusts the driving current of the LED light source according to the operating current.

[0013] The power module includes an input rectifier and filter circuit and a main control chip power supply circuit. The input rectifier and filter circuit is used to rectify AC power into DC power. The main control chip power supply circuit includes an auxiliary winding for powering the main control chip. The output rectifier and filter circuit is used to provide a stable DC drive voltage for the LED light source.

[0014] Secondly, embodiments of the present invention also provide a control method for a multifunctional adjustable rail light, used in the multifunctional adjustable rail light described in the first aspect, the method comprising: In response to a switching command, obtain the position information of the power DIP switch and the color temperature DIP switch; Based on the gear information, obtain the target brightness and target color temperature; Based on the target brightness and the target color temperature, obtain the brightness percentage of LED beads in different color temperature channels; Based on the brightness ratio, obtain the first driving current of the LED beads for each color temperature channel; The multi-functional adjustable rail light is controlled to provide illumination based on the first driving current and the first actual angle value of the beam angle. In response to the change in the beam angle, the first driving current is adjusted according to the changed second actual angle value.

[0015] Preferably, controlling the multifunctional adjustable rail light to provide illumination based on the first actual angle value of the first driving current and the beam angle includes: The first actual angle value of the LED light source is obtained through the beam angle adjustment component; The first actual angle value and the reference angle value are compared to obtain the first angle deviation information, wherein the angle deviation information includes the deviation direction and the deviation magnitude; Based on the angle deviation information and the target brightness, a first brightness compensation value is obtained; According to the preset beam angle sensitivity parameter of each color temperature channel, the first brightness compensation value is allocated to each color temperature channel to obtain the second brightness compensation value of each color temperature channel. The beam angle sensitivity parameter is used to characterize the degree of influence of different color temperature channels on the target illuminance when the beam angle changes relative to the reference angle value. The second driving current of each color temperature channel is obtained by adjusting the second brightness compensation value and the first driving current of each color temperature channel. The LED beads in each color temperature channel are driven to provide illumination based on the second driving current.

[0016] Preferably, the step of allocating the first brightness compensation value to each color temperature channel according to the preset beam angle sensitivity parameter of each color temperature channel to obtain the second brightness compensation value of each color temperature channel includes: performing brightness allocation weighting according to the angle deviation information and the beam angle sensitivity parameter to obtain the brightness allocation weight value of each color temperature channel, wherein the brightness allocation weight value and the beam angle sensitivity parameter are positively correlated. The initial brightness compensation value for each color temperature channel is obtained by proportionally allocating the first brightness compensation value and the brightness allocation weight value. Based on the first driving current of each color temperature channel and the initial brightness compensation value, the intermediate driving current of each color temperature channel is obtained. The actual color temperature value is obtained by estimating the mixed color temperature based on the intermediate driving current of each color temperature channel. The color temperature deviation amount and direction are obtained by comparing the actual color temperature value with the target color temperature. Based on the direction of the color temperature deviation, select the channels to be added and the channels to be reduced in the color temperature channels; Based on the color temperature deviation, obtain the compensation correction amount for each channel to be added and each channel to be reduced; The compensation correction amount is added to the initial brightness compensation value of the channel to be added, and the compensation correction amount is reduced to the initial brightness compensation value of the channel to be reduced, to obtain the second brightness compensation value of each color temperature channel, wherein the second brightness compensation value of the color temperature channels other than the channel to be added and the channel to be reduced is the initial brightness compensation value.

[0017] Preferably, adjusting the first driving current in response to a change in the beam angle, based on the changed second actual angle value, includes: The second angle deviation information is obtained by subtracting the second actual angle value from the first actual angle value. The second angle deviation information includes the deviation direction, the deviation magnitude, and the angle change rate. Based on the second angle deviation information, the angle dynamic characteristics are obtained, wherein the angle dynamic characteristics include angle change acceleration and angle change jerk. Based on the second angle deviation information and the beam angle sensitivity parameter, a brightness impact assessment is performed to obtain a third brightness compensation value and an upper limit for the brightness change slope. Based on the dynamic angular characteristics, the upper limit of the brightness adjustment slope is constrained and synthesized to obtain the target brightness adjustment slope; Based on the third brightness compensation value and the beam angle sensitivity parameter, channel target allocation is performed to obtain the fourth brightness compensation value for each color temperature channel; Based on the fourth brightness compensation value and the target brightness adjustment slope, the second driving current of the corresponding color temperature channel is linearly adjusted.

[0018] In summary, the beneficial effects of the present invention are as follows: The multi-functional adjustable track light and its control method provided in this invention integrate a color temperature adjustment module, a power adjustment module, and a power supply module within the light body. It also employs multiple sets of LED beads with different color temperatures and a beam angle adjustment component, achieving flexible multi-dimensional adjustment of color temperature, brightness, and beam angle. Specifically, users can selectively control the lighting state of LED beads with different color temperatures or adjust their brightness ratios according to their needs, thereby obtaining the desired color temperature output. Simultaneously, the power adjustment module adjusts the driving current of the LED light source to achieve precise brightness control. Furthermore, with the beam angle adjustment component, the beam angle range can be manually adjusted to meet the personalized needs of different scenarios for lighting range and atmosphere. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of the present invention.

[0020] Figure 1 This is a schematic diagram of the structure of a multifunctional adjustable rail light according to an embodiment of the present invention.

[0021] Figure 2 This is a circuit diagram of the light source adjustment component according to an embodiment of the present invention.

[0022] Figure 3 This is a flowchart illustrating the control method for a multifunctional adjustable rail light according to an embodiment of the present invention.

[0023] Figure 4 This is another flowchart illustrating the control method for the multifunctional adjustable rail light according to an embodiment of the present invention. Detailed Implementation

[0024] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, the present 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 only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the invention.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0026] Example 1 See Figure 1 This invention provides a multifunctional adjustable rail light, comprising: The lamp body includes an LED light source and a connection structure for connecting to a guide rail, wherein the LED light source includes LED beads with different color temperatures; A beam angle adjustment component is disposed in the lamp body and is used to adjust the beam angle of the LED light source; A light source adjustment component is electrically connected to the LED light source, and the light source adjustment component includes a color temperature adjustment module, a power adjustment module, and a power supply module; The power supply module and the color temperature adjustment module are electrically connected to the color temperature adjustment module and the power adjustment module. The color temperature adjustment module is used to selectively control the lighting state of LED beads with different color temperatures or adjust the brightness ratio of each color temperature LED bead to obtain the target color temperature output. The power adjustment module is used to adjust the driving current or power output of the LED light source.

[0027] Specifically, the lamp body is the main structure of the track light, used to house the LED light source, beam angle adjustment components, and light source adjustment components, and is mechanically and electrically connected to the track through a connecting structure. The connecting structure can be a snap-fit, a sliding groove, or a spring, etc., to achieve stable installation of the lamp on the track and power connection, facilitating the arrangement and replacement of the lamp.

[0028] The LED light source is located inside the lamp body and includes multiple sets of LED beads with different color temperature channels (such as warm white, neutral white, and cool white).

[0029] These LED beads can be lit individually or in combination to output lighting effects with different color temperatures, meeting the light color requirements of different spaces and scenes.

[0030] The beam angle adjustment component is also installed inside the lamp body and is mainly used to adjust the beam angle emitted by the LED light source. A typical structure includes a focusing ring, an optical lens, and a frog-eye lens. The focusing ring, when manually rotated, moves the optical lens or frog-eye lens along the optical axis, thereby changing the relative distance between the light source and the lens, and thus adjusting the divergence angle of the light. This design ensures both flexible adjustment of the lamp's illumination range and improves the precision of the lighting.

[0031] The light source adjustment component is electrically connected to the LED light source and is the core part for realizing multi-dimensional adjustment. It mainly includes a color temperature adjustment module, a power adjustment module, and a power supply module.

[0032] The color temperature adjustment module uses hardware (such as DIP switches, electronic switches, current switching circuits, etc.) and software (such as main control chip control) to adjust the lighting status or brightness ratio of LED beads with different color temperatures.

[0033] Users can choose to use a single color temperature or a mixture of multiple color temperatures to achieve the target color temperature output, thus adapting the lighting atmosphere to different scenarios.

[0034] The power adjustment module is used to regulate the driving current or power output of the LED light source. It is generally implemented using multi-position DIP switches, dimming circuits, current sampling and feedback, etc. By adjusting the driving current, the overall brightness of the lamp can be changed, the life of the LED chips can be extended, energy efficiency can be improved, and different lighting intensity requirements can be met.

[0035] The power module provides a stable power supply for the entire rail light and typically includes an input rectifier and filter circuit, a main control chip power supply circuit, and an output rectifier and filter circuit.

[0036] Its input terminal is connected to the rail power supply, and its output terminal is electrically connected to the color temperature adjustment module and the power adjustment module, providing the required DC operating voltage for these modules and ensuring that all adjustment functions operate stably and reliably.

[0037] Preferably, the beam angle adjustment assembly includes a focusing ring, an optical lens, and a frog-eye lens. The focusing ring is used to drive the optical lens or frog-eye lens to move relative to the LED light source along the optical axis to adjust the beam angle. The adjustment range of the beam angle is 24° to 63°.

[0038] See Figure 2In one embodiment, the LED light source includes at least two sets of LED beads with different color temperature channels. The color temperature adjustment module includes a color temperature DIP switch and a current switching circuit. The current switching circuit is connected to the color temperature DIP switch. The current switching circuit includes a switching network consisting of switching devices corresponding to each color temperature channel and a current control resistor. The color temperature DIP switch is used to selectively connect / disconnect the switching network or change its connection method, thereby changing the current distribution of different color temperature channels and adjusting the brightness ratio and color temperature of the LED beads.

[0039] The LED light source includes at least two sets of LED beads with different color temperature channels. The color temperature adjustment module includes a color temperature DIP switch and a current switching circuit. The current switching circuit is connected to the color temperature DIP switch. The current switching circuit includes a switching network consisting of switching devices corresponding to each color temperature channel and a current control resistor. The color temperature DIP switch is used to selectively connect / disconnect the switching network or change its connection method, thereby changing the current distribution of different color temperature channels and adjusting the brightness ratio and color temperature of the LED beads.

[0040] Specifically, the multi-color temperature adjustment in this embodiment employs color fusion technology: current is allocated between two sets of different color temperature channels (e.g., warm channel W, cold channel C) to weighted superposition of the two channel spectra, resulting in the target correlated color temperature. Structurally, the transformer secondary winding forms a DC bus via rectifier diode SF1004DS and filter capacitor CE3, connected to the LED+ of CON1; the two channel return lines are led out to W- and C- of CON1 respectively, and then return to ground via a switching network consisting of color temperature DIP switch / jump switch KS1 and corresponding current control resistors. KS1 changes the current distribution ratio of the two channels by changing the loop access method of each channel (through, through resistor, open), thereby achieving color temperature adjustment from warmer to cooler. The power level is set by the bottom KP1 and resistor array RS3~RS7, and the total drive current is determined by the feedback / sampling branch in conjunction with the FB / CS pin of the main control U2 (e.g., BP337D8); based on this, KS1 completes the channel allocation, and the two are independent of each other.

[0041] Its working principle is as follows: First, the output power is selected based on KP1, and constant current control keeps the total drive current basically constant; then, the color temperature setting is selected by KS1, so that the current share of the warm and cold channels is distributed according to the preset ratio. When the warm channel share is larger, the output correlated color temperature moves to the 2700K~3000K range; when the shares of the two channels are close, near-neutral white is obtained; when the cold channel share is larger, the correlated color temperature is increased to 5000K~6500K. By setting several sets of channel current ratio-target color temperature correspondence, stepped or quasi-continuous adjustment can be achieved within the range of 2700K~6500K; if a finer step is required, a small resistance difference can be added to the KS1 network or the number of settings can be expanded without modifying the high voltage primary side.

[0042] This implementation features a simple structure, high efficiency, and good manufacturability. KS1 operates on the secondary low-voltage side, with no additional semiconductor voltage drop and low switching loss; constant current control maintains stable total luminous flux during switching, reducing brightness fluctuations; the current ratio is determined by a precision resistor, ensuring good color temperature reproducibility between batches, facilitating factory calibration and rapid on-site setting, and allowing selection of an appropriate color temperature within the 2700K–6500K range for better viewing experience based on the display environment and product material.

[0043] In one embodiment, the power adjustment module includes a multi-level current adjustment circuit, which consists of multiple first resistors and corresponding switching devices forming multiple current paths, each current path corresponding to a current level; the power adjustment module also includes a power DIP switch for selecting different current paths to adjust the driving current of the LED light source and change the output power.

[0044] Specifically, the power adjustment module employs a multi-level current regulation circuit to achieve graded output power settings. Structurally, several first resistors and corresponding switching devices form multiple selectable current paths, which converge to the sampling / feedback node of the constant current control loop. A power DIP switch or a range selection switch is used to select one of these paths, activating the equivalent sampling resistor or voltage division ratio corresponding to that path, thereby providing a clear constant current reference value. Different paths correspond to different reference values, i.e., different drive currents and power levels. Figure 2 The middle part corresponds to the bottom gear switch KP1 and the resistor array RS3~RS7. Its output is connected to the CS / FB branch of the main control chip U2, and changing the sampling amount changes the constant current target.

[0045] Specifically, the electrical connections and device correspondences are as follows: KP1 is a power DIP switch; its adjacent RS3 to RS7 form the first resistor array; the above network is electrically connected to the sampling / feedback branch (CS / FB pin side) of the main control chip U2; the secondary rectification and filtering are formed by SF1004DS and CE3 and connected to CON1·LED+, serving as the load side power supply for the constant current circuit. The different combinations of resistors and contacts selected by KP1 constitute multiple current paths composed of multiple first resistors and corresponding switching devices, each path corresponding to a current level.

[0046] After the user selects the power DIP switch, the first resistor in the selected path is connected. The constant current control loop adjusts the duty cycle based on this sampled value, stabilizing the LED output current at the set value for that range. Since the switching occurs on the sampling / feedback side, no additional power devices are needed on the LED load side. The only difference between paths is the change in sampling parameters, resulting in low switching losses, rapid response, and quick entry into the stable region. To ensure smooth transitions between ranges, the resistor value can be configured in the sampling network according to a monotonically increasing principle, and basic debouncing and mechanical tolerance compensation can be added to the DIP switch to avoid brightness fluctuations caused by momentary jitter.

[0047] The power DIP switch first determines the total drive current and the upper limit of the overall lamp brightness. The color temperature DIP switch (KS1) then only changes the current distribution ratio between each color temperature channel, and the two do not interfere with each other. The advantages of this embodiment are: clear power levels and accurate quantification, facilitating factory calibration and mass production consistency; the switching path does not carry the LED main current, resulting in high efficiency and low temperature rise; and multiple power curves covering common illuminance requirements can be obtained with a small number of precision resistors and DIP switches, adapting to the lighting intensity requirements of different spaces and objects.

[0048] In one embodiment, the power DIP switch is connected to the control terminals of multiple gating devices, and the multiple current paths each include a second resistor connected in series and a corresponding gating device; the power DIP switch is used to selectively turn on the gating devices, so that the corresponding current path is connected to or disconnected from the constant current control loop, thereby adjusting the driving current and power output of the LED light source.

[0049] Specifically, the power DIP switch is used to output control signals, and its output terminals are connected to the control terminals of multiple gating switching devices. Each current path consists of a second resistor connected in series with the corresponding gating switching device and electrically connected to the sampling / feedback node of the constant current control loop. Through these multiple current paths arranged in parallel, different paths correspond to different sampling / feedback equivalent parameters, thus corresponding to different current levels.

[0050] During operation, the power DIP switch selectively activates a particular selector switch by changing its position, thus connecting the current path containing the second resistor connected in series with it into the constant current control loop. Simultaneously, it turns off other selector switches, causing their corresponding current paths to exit the constant current control loop. The constant current control loop then operates using the equivalent sampling / feedback parameters of the connected path, stabilizing the drive current and power output at the level corresponding to that path. When the user switches the power DIP switch to another position, the currently connected current path is disconnected, a new current path is connected, and the constant current control loop converges to the new drive current and power level.

[0051] With the above structure and operating method, the current level setting is completed on the sampling / feedback side by the second resistor and the gating switch. The power DIP switch only handles the selection and conduction of the gating switch and does not carry the main LED current. This achieves low switching loss, fast response speed, clear level boundaries, and allows for easy expansion or refinement of the power levels by changing the value of the second resistor or increasing or decreasing the number of current paths.

[0052] In one embodiment, the light source adjustment component further includes a main control chip connected to a feedback control circuit. The feedback control circuit includes a feedback resistor and is used to acquire the operating current of the LED light source and transmit it to the main control chip. The main control chip adjusts the driving current of the LED light source according to the operating current. The power supply module includes an input rectifier and filter circuit and a main control chip power supply circuit. The input rectifier and filter circuit is used to rectify AC power into DC power. The main control chip power supply circuit includes an auxiliary winding for supplying power to the main control chip. The output rectifier and filter circuit is used to provide a stable DC driving voltage for the LED light source.

[0053] The light source adjustment component is equipped with a main control chip U2, which is connected to the feedback control circuit. The feedback control circuit includes a feedback resistor and a sampling network: the auxiliary / sampling winding of transformer T1 establishes a feedback quantity related to the load state on the secondary side, which is then sent to the feedback pin of the main control chip after voltage division and filtering. Simultaneously, the current sampling terminal of the main control chip receives the primary current information. The above feedback signals comprehensively reflect the changes in the operating current / equivalent load at the LED end. Based on this, the main control chip adjusts the switch duty cycle and operating point, thereby adjusting the drive current of the LED light source to ensure stable operation of the output at the target power / brightness and avoid brightness fluctuations.

[0054] The power supply module works in conjunction with this, including an input rectifier and filter circuit, a main control chip power supply circuit, and an output rectifier and filter circuit. After passing through the surge and EMI filter network, the mains power enters the rectifier bridge DB1, forming a high DC voltage across the bus capacitors CE1 and CE2; for example... Figure 2The embodiment also includes a boost / regulator stage (U1, LE1, ES2J, etc.) to stabilize the bus and improve stability under load and input fluctuations. The main control chip is powered by the auxiliary winding of T1, rectified and filtered by D4 and C6 before being sent to the main control chip's power supply terminal, ensuring reliable startup and continuous power supply. On the load side, the secondary winding of T1 outputs a stable DC power to the LED+ connector of CON1 via rectifier diode D6 and filter capacitor CE3. This, combined with the color temperature and power leveling circuit, provides a stable DC drive voltage for the LED light source. Through this closed-loop control and power supply architecture, the device can maintain a constant and predictable drive current and light output effect at different power and color temperature levels.

[0055] The above embodiments, through a reasonable modular design and the integration of color temperature adjustment, power adjustment, and power management, provide a highly efficient, flexible, and adjustable track lighting control system. The color temperature adjustment module, combined with a current switching circuit, enables flexible color temperature control. The power adjustment module achieves precise brightness adjustment through multiple current paths. The feedback control system ensures stable light source output by monitoring the current in real time. Furthermore, the power module, through input rectification and output filtering circuits, ensures the stability and reliability of the power supply, providing support for the operation of the entire system.

[0056] This embodiment effectively addresses the shortcomings of traditional rail lights in terms of color temperature, brightness adjustment, and stability, thereby improving system performance and user experience.

[0057] Example 2 Please see Figure 3 This invention also provides a control method for a multi-functional adjustable rail light, used in the multi-functional adjustable rail light described in Embodiment 1, the method comprising: S1. In response to the switching command, obtain the gear information of the power DIP switch and the color temperature DIP switch; Switch commands refer to operation commands issued by users through physical buttons, remote control, or intelligent control systems, typically used to turn lights on, off, or switch the operating mode of a lamp. Power DIP switches and color temperature DIP switches refer to mechanical toggle switches installed on the lamp body or control circuit board, respectively. Each switch consists of several toggleable switches, and different switch combinations represent different current levels (brightness) and color temperature levels (light color combinations). For example, a common four-position DIP switch can achieve 16 combination selections.

[0058] The purpose of this step is to enable the system to accurately read and identify the physical state information of the current power and color temperature adjustment after receiving the switching command, providing a precise and real-time data foundation for subsequent control logic. By obtaining the current physical position of the DIP switch, the system can determine the target brightness and target color temperature to be output based on the parameters set by the user, which is the starting point of the entire multi-functional dimming and color adjustment control process.

[0059] During implementation, the system control circuit can acquire the current position status of each DIP switch using methods such as level acquisition and code recognition. For example, the high and low level states of each DIP switch can be acquired in real time through the input port of the microcontroller and decoded into specific position information. This information can also be remotely transmitted to the main control unit via wireless signal. Due to the adoption of a simple and intuitive DIP switch structure, users can easily and quickly select the ideal power and color temperature combination according to actual needs, greatly improving the ease of operation and scene adaptability of the lighting fixture.

[0060] S2. Based on the gear information, obtain the target brightness and target color temperature; Target brightness refers to the predetermined luminous flux or illuminance level that the system should output based on the power DIP switch setting. Target color temperature refers to the specified color temperature value that the system should output based on the color temperature DIP switch setting, such as 3000K (warm white), 4000K (neutral white), or 6500K (cool white). Different combinations of power settings allow for various combinations of brightness and color temperature.

[0061] The purpose of this step is to translate the user's intended settings into specific, controllable physical parameters, thereby providing precise target values ​​for circuit control and drive components. Only by mapping the DIP switch settings to specific brightness and color temperature values ​​can the subsequent system accurately adjust the LED's illumination state and drive current to achieve the desired lighting effect.

[0062] In implementation, after receiving the DIP switch position information, the main control chip or microcontroller unit searches for or calculates the target brightness and color temperature values ​​corresponding to that combination. For example, a lookup table method can be used to directly map a set of DIP switch combinations to preset brightness and color temperature parameters in the system. In some advanced applications, the target settings can be further optimized by combining environmental sensor data and historical user preferences. The beneficial effect of this step is that it seamlessly transforms the user's subjective choices into precise targets for lighting hardware control, achieving intuitive, personalized, and highly responsive lighting control.

[0063] S3. Based on the target brightness and the target color temperature, obtain the brightness ratio of LED beads in different color temperature channels; The luminance percentage in this step refers to the relative luminous flux share allocated to each color temperature channel (e.g., warm / medium / cool color temperature) under a given total luminance target. For example, if the target color temperature is 3500K and the target luminance is medium, the possible percentage combination is 40% warm color temperature, 35% medium color temperature, and 25% cool color temperature. The luminance percentage only describes the luminous flux share and is not directly equivalent to the current share, because the luminous efficacy and electro-optical conversion efficiency of different channels may differ.

[0064] S4. Based on the brightness ratio, obtain the first driving current of the LED beads for each color temperature channel; The first drive current refers to the baseline current used by each channel to achieve the S3 brightness ratio and target brightness under the current environment and power level, such as the set of channel currents at a 24° reference angle or the device's default reference angle. It embodies the initial electrical target of "lighting according to the formula" and is the starting point for subsequent adjustments linked to the beam angle.

[0065] First, calculate the total current or total power budget based on the target brightness, and then derive the initial current value of each channel according to the proportion and channel luminous efficacy.

[0066] S5. Based on the first driving current and the first actual angle value of the beam angle, control the multi-functional adjustable guide rail light to provide illumination; The first actual angle value is the current beam angle reading obtained from beam angle detection when the light is turned on, used to confirm the optical state of the initial illumination (e.g., 24° / 40° / 60°). In conjunction with the "first drive current" in S4, this step completes the closed-loop start-up from controlling the formula to actual light emission. The purpose of this step is to achieve current-based lighting with minimal time delay and minimal perceived abrupt changes. In a preferred embodiment, the first actual angle value can be incorporated into the brightness correction to ensure that the initial light spot's center illuminance is close to the expected value. This reduces the user's perception of brightness inconsistency immediately upon turning on the light or after the first focus adjustment, thus improving the initial visual experience.

[0067] S6. In response to the change in the beam angle, the first driving current is adjusted according to the changed second actual angle value.

[0068] Specifically, changes in the beam angle directly alter the spot size and center illuminance. To maintain consistent and continuous brightness perceived by the user, a one-time brightness compensation is required based on the second actual angle value, and the first driving current is proportionally amplified or reduced accordingly. Since the angle has a relatively small impact on color temperature, the relative proportions between channels are not changed here to avoid introducing additional color shift.

[0069] In one specific embodiment, after reading the second actual angle value, the factory-established angle-illuminance compensation data (e.g., the relative change in center illuminance corresponding to each commonly used angle) can be consulted to obtain the amount of brightness compensation that should be increased or decreased this time. This compensation amount is then applied proportionally to the first drive current of each channel to obtain the adjusted channel current. Without changing the color temperature ratio, the illuminance fluctuations caused by angle changes are quickly offset, resulting in a smooth brightness transition without any perceptible abrupt changes; the channels are adjusted consistently and proportionally to avoid light mixing shifts.

[0070] Preferably, see Figure 4 The step of controlling the multi-functional adjustable rail light to provide illumination based on the first actual angle value of the first driving current and the beam angle includes: S51. Obtain the current first actual angle value of the LED light source through the beam angle adjustment component; Specifically, the first actual angle value refers to the real-time beam angle reading under the current operating conditions or when the light is on, provided by the angle detection unit in the beam angle adjustment component. This reading reflects the current opening degree of the optical output cone, directly determining the center illuminance and spot size. The original angle signal can be de-jittered and smoothed briefly, with out-of-bounds and anomaly criteria set. When data jitter or instantaneous jumps occur, the most recent valid value is used and an alarm is recorded. This ensures a stable and reliable first actual angle value, reducing the interference of angle measurement noise on brightness control and avoiding erroneous compensation.

[0071] S52. Compare the first actual angle value with the reference angle value to obtain the first angle deviation information, wherein the angle deviation information includes the deviation direction and the deviation magnitude; The reference angle value is a reference beam angle defined by the product, such as 30° or 36° as specified in the factory calibration, serving as a comparison point for brightness and visual perception evaluation. The first actual angle value is compared with the reference angle value to obtain first angle deviation information, wherein the deviation direction is wider or narrower, and the deviation magnitude is the specific numerical value of the angle difference between the two, in degrees. S53. Obtain a first brightness compensation value based on the angle deviation information and the target brightness; Specifically, a first brightness compensation value is obtained based on the specific angle difference in the angle deviation information and the target brightness; wherein, the first brightness compensation value can be determined by continuous mapping based on the angle-illuminance compensation data formed by factory calibration; This step aims to transform the illuminance change caused by angle variation into a total luminance compensation target, serving as a unified basis for subsequent channel allocation and current adjustment. By first determining the total compensation and then allocating it to each channel, it ensures that the center illuminance or the illuminance at a specified measuring point remains consistent across different angles.

[0072] In one specific embodiment, the angle-illuminance compensation data can be obtained according to the following steps: S531. Based on the standard test distance, ambient temperature and input voltage, set the operating conditions to obtain the test environment parameters; The standard test distance refers to the fixed distance from the center of the lamp spot to the surface being tested; the ambient temperature refers to the constant room temperature during the test; and the input voltage refers to the power supply conditions at the guide rail. These three parameters together constitute the test environment parameters, which are used to limit the measurement scenario. The purpose of setting these conditions is to eliminate the influence of external variables on the comparison results, so that the data from different angles and different machines are comparable and reproducible.

[0073] S532. Determine the reference formula based on the target brightness and target color temperature. The reference formula includes the channel ratio and reference current at the reference angle. Target brightness refers to the required overall brightness level; target color temperature refers to the expected correlated color temperature. At a reference angle, to meet these brightness and color temperature requirements, the light output ratio of each color temperature channel and its matching channel current must be determined, i.e., the reference formula. The establishment of the reference formula serves as a reference for subsequent comparison and compensation: all angle data are set with the same brightness and color temperature for light output to avoid the interplay between angle influence and color requirements. During implementation, first determine the total power / current budget based on the target brightness, then select the channel ratio based on the target color temperature, and calculate the reference current for each channel based on the typical luminous efficacy of the channel; simultaneously, verify the upper and lower limits and power limits of a single channel. The resulting reference formula can be directly used for angle-by-angle measurements on the S533, ensuring that only the angle changes at different angles, while other conditions remain consistent.

[0074] S533. Based on the reference formula, perform angle-by-angle illumination and center illuminance measurement to obtain raw angle-illuminance data. Then, based on the raw angle-illuminance data and the reference angle illuminance, perform normalization processing to obtain relative illuminance data. The angle-illuminance raw data refers to the set of illuminance values ​​at the center of the light spot measured at multiple angles; the relative illuminance data is the dimensionless result obtained by dividing the illuminance at each angle by the illuminance at the reference angle. The purpose of this step is to obtain an objective curve of the effect of angle change on the center illuminance, and to eliminate the slight difference and instantaneous drift in luminous flux between prototypes through normalization, so that the curve only reflects the angle factor.

[0075] During implementation, the central illuminance is measured point by point within the angular range using equidistant or densified sampling, and the illuminance at each point is recorded along with the reference angular illuminance. Normalization is then performed to form angle-relative illuminance data pairs. Normalized data facilitates horizontal comparison, subsequent smoothing and interpolation, and has lower storage overhead and stronger resistance to batch variations.

[0076] S534. Based on the relative illumination data and the preset anomaly criteria, outlier removal and smoothing correction are performed to obtain a continuous and monotonic relative illumination curve. Specifically, outlier removal is used to eliminate measurement spikes and obvious anomalies; smoothing correction is used to reduce minor noise and ensure reasonable monotonicity of the curve as the angle changes (center illumination usually decreases as the angle widens and usually increases as the angle narrows), thereby constructing a stable, interpolable, and reliable reference curve, avoiding compensation jumps or jitters caused by data noise during runtime. The resulting continuous monotonic curve provides a reliable basis for subsequent anchor point extraction and boundary strategy formulation.

[0077] S535. Based on the relative illumination curve and angle range, extract anchor points and set boundary strategies to obtain the angle-relative illumination compensation anchor point set and boundary rules. Anchor point sets are a small number of representative angles and their relative illumination values ​​selected from continuous curves, such as 24°, 30°, 40°, 50° and 60°, used to compress data volume and maintain key shapes; boundary rules are used to specify the compensation limiting and extrapolation methods near the narrowest / widest angles, significantly reducing storage and computational overhead without sacrificing accuracy, and ensuring safety and visual control at extreme angles.

[0078] During implementation, points are selected based on curvature variations and commonly used angles to ensure controlled errors between anchor points. Simultaneously, maximum increment / decrease ratios and extrapolation strategies are set at boundaries (e.g., compensation is no longer increased at extreme angles). The output anchor point set and boundary rules balance accuracy, volume, and safety.

[0079] S536. Based on the anchor point set and boundary rules, define the interval interpolation to obtain the angle-illuminance compensation data; Interval interpolation is defined as the rules for determining how to calculate the compensation amount from adjacent anchor points at any angular position during runtime (such as piecewise linear interpolation), and forming the data structure required for table lookup, transforming discrete anchor points into continuous mappings, so that the compensation coefficient can be quickly obtained for any angular difference.

[0080] By specifying interpolation methods and boundary processing for each interval, lookup table data for angle-compensation coefficients is generated, thereby obtaining angle-illuminance compensation data. This data is used to continuously calculate the brightness compensation amount according to the actual angle during runtime, ensuring smooth compensation, timely response, and simple implementation.

[0081] S54. According to the preset beam angle sensitivity parameter of each color temperature channel, the first brightness compensation value is allocated to each color temperature channel to obtain the second brightness compensation value of each color temperature channel. The beam angle sensitivity parameter is used to characterize the degree of influence of different color temperature channels on the target illuminance when the beam angle changes relative to the reference angle value. In this step, the beam angle sensitivity parameter is used to characterize the strength of the influence of each color temperature channel on the target illuminance when the beam angle changes relative to the reference angle; the first brightness compensation value is the overall brightness target amount that needs to be increased or decreased for the current angle difference, which can be expressed as a percentage or current increment. For example, when the angle widens by 15°, an overall brightness compensation of +14% is required. If the sensitivity indicates that the influence order of "warm / medium / cool" is high / low / medium, the allocation ratio can be tilted accordingly towards the warm and cool color temperature channels.

[0082] Specifically, firstly, the corresponding channel weights are selected based on the direction and magnitude of the angular deviation. Then, the first brightness compensation value is divided into second brightness compensation values ​​for each channel according to the weights. Subsequently, constraint checks are performed: if a channel is expected to reach the upper / lower current limit or the upper power limit, the remaining channels are proportionally redistributed without changing the total compensation amount. If necessary, a chromaticity tolerance is set to ensure that the color temperature shift that may be introduced after allocation does not exceed a predetermined threshold. The resulting second brightness compensation value reflects both channel differences and maintains consistency in safety and visual perception.

[0083] In one embodiment, the beam angle sensitivity parameter can be obtained by the following method: Based on the standard test distance, ambient temperature, input voltage setting, and reference angle, operating conditions and thermal stability preprocessing are performed to obtain test environment parameters; each color temperature channel is individually illuminated according to the target power level, and the center illuminance is measured in angular steps to collect data and obtain raw angle-illuminance data; based on the reference angle illuminance and data quality criteria, normalization, outlier removal, and smoothing are performed to obtain the angle-relative illuminance curve for each channel; based on the changing trend of the curve in the reference neighborhood and segmented intervals, segmented fitting and sensitivity calculation are performed to obtain the beam angle sensitivity parameter for each color temperature channel. S55. Based on the second brightness compensation value and the first driving current of each color temperature channel, adjust to obtain the second driving current of each color temperature channel. In this step, the second drive current is the result of implementing the compensation amount at the electrical level. That is, it is the target current after adjusting the first drive current for each channel accordingly. The second brightness compensation value of each channel is superimposed with its first drive current to obtain the target current. Subsequently, current quantization, rail voltage margin, and junction temperature margin are confirmed. The output after this processing is the second drive current of each channel.

[0084] S56. Drive the LED beads of each color temperature channel to provide illumination according to the second driving current.

[0085] Finally, the results of the allocation and adjustment are reflected in the light emission in real time, completing the brightness correction to match the current beam angle, and entering a stable lighting state.

[0086] Preferably, the step of allocating the first brightness compensation value to each color temperature channel according to the preset beam angle sensitivity parameter of each color temperature channel to obtain a second brightness compensation value for each color temperature channel includes... S541. Based on the angle deviation information and the beam angle sensitivity parameter, a brightness allocation weight is calculated to obtain the brightness allocation weight value for each color temperature channel, wherein the brightness allocation weight value and the beam angle sensitivity parameter are positively correlated. Specifically, the brightness allocation weight value describes the proportion of total brightness compensation contributed by each color temperature channel under this angle change. It is positively correlated with the beam angle sensitivity parameter, indicating that channels more significantly affected by the angle receive higher weights. The total compensation is split according to the differences in the actual optical contribution of the channels, making the compensation faster and closer to the center illumination recovery requirements.

[0087] In implementation, based on the direction and magnitude of the angle deviation information, the corresponding weighted recombinant can be selected from the parameter table obtained from the factory calibration, and normalized. If necessary, boundary protection and minimum weight limits can be added to prevent a certain channel from being assigned too low a proportion. The weights obtained in this way not only reflect optical differences but also facilitate subsequent current allocation.

[0088] S542. The initial brightness compensation value of each color temperature channel is obtained by proportionally allocating the first brightness compensation value and the brightness allocation weight value. The initial brightness compensation value is the channel-level target increase or decrease after the total compensation amount is split according to weights. A total-level compensation target is transformed into an executable value specific to each channel, while keeping the total sum constant. The first brightness compensation value is allocated according to the weight ratio of each channel, and the result is quantized and matched with the minimum step size to ensure consistency with the driver output resolution. After allocation, the sum between channels should be checked to ensure it equals the total compensation amount; if necessary, a small callback should be used to ensure conservation.

[0089] S543. Obtain the intermediate driving current of each color temperature channel based on the first driving current of each color temperature channel and the initial brightness compensation value. The intermediate drive current is a temporary current target after adding luminance compensation, without changing the color temperature ratio. It is used to assess the feasibility of compensation and its impact on subsequent chromaticity. An executable electrical target is first established before actual deployment to facilitate subsequent verification and estimation. The initial luminance compensation value of each channel is added to the first drive current to obtain the intermediate drive current. Then, the upper and lower limits of a single channel and the total power constraints are verified. If any limits are reached, a limiting flag is recorded, and the remaining channels are proportionally recovered or redistributed without changing the total compensation amount to ensure the intermediate target is feasible.

[0090] S544. Estimate the color temperature of the mixed light based on the intermediate driving current of each color temperature channel to obtain the actual color temperature value. Specifically, the actual color temperature value reflects whether the mixing result deviates from the target color temperature after brightness compensation allocation. The purpose is to confirm whether the distribution of brightness to each channel introduces a perceptible chromaticity shift, thus providing a basis for necessary fine-tuning. It can be estimated using the factory-established mapping relationship between current ratio and relevant color temperature, and interpolated for combinations located between representative points; for a three-channel configuration, the middle channel can be used as the anchor point to determine whether it leans towards warmer or cooler colors. No additional sensors are needed to obtain the actual color temperature value matching the current current ratio.

[0091] S545. By comparing the actual color temperature value with the target color temperature, the color temperature deviation amount and the color temperature deviation direction are obtained; Color temperature deviation indicates the magnitude of the deviation from the target, while the direction indicates whether it's too warm or too cool. This step aims to quantify colorimetric differences into actionable correction inputs, triggering subsequent adjustments only when the tolerance is exceeded, thus avoiding frequent small fluctuations. The actual color temperature value is compared to the target color temperature, and a judgment of whether it meets the standard or deviates is made based on the set tolerance window. For cases exceeding the tolerance, the deviation can be categorized into small, medium, and significant levels, or the specific numerical value of the color temperature deviation can be directly provided, along with the direction of warming or cooling, forming a clear correction instruction.

[0092] S546. Select the channel to be added and the channel to be reduced in the color temperature channel according to the direction of the color temperature deviation; Channels to be added are used to pull back the color temperature, while channels to be reduced are used to provide offsetting margins. The addition and reduction of these channels keep the total brightness constant. The goal is to achieve color correction with minimal changes without compromising brightness compensation. In practice, if the color temperature is too cool, warm channels are prioritized for addition and cold channels for reduction; the opposite applies if the color temperature is too warm. When a channel reaches its limit or has insufficient margin, a mid-range channel can be used to replace it, ensuring an effective offsetting pair.

[0093] S547. Based on the color temperature deviation, obtain the compensation correction amount for each channel to be added and each channel to be reduced; The compensation correction amount is a pair of equal but opposite increments or decrements used to fine-tune the channel proportions without changing the total luminance compensation. Its purpose is to correct the chromaticity shift caused by luminance allocation, bringing the actual color temperature back within tolerance. In implementation, the deviation can be mapped to three correction levels: small, medium, and significant. The correction amount is then limited by the available channel margin and power limit. If one level is exceeded, the correction amount of the other level is simultaneously reduced to maintain the principle of offsetting equal amounts and the conservation of total compensation.

[0094] S548. The compensation correction amount is added to the initial brightness compensation value of the channel to be added, and the compensation correction amount is reduced to the initial brightness compensation value of the channel to be reduced, to obtain the second brightness compensation value of each color temperature channel, wherein the second brightness compensation value of the color temperature channels other than the channel to be added and the channel to be reduced is the initial brightness compensation value.

[0095] The second brightness compensation value is the final compensation result at the channel level, which simultaneously takes into account both brightness consistency and chromaticity tolerance. Brightness and chromaticity adjustments are completed in a single adjustment, avoiding perceptible flicker caused by multiple round trips.

[0096] Specifically, the correction amount can be added to the channel to be increased and deducted equally from the channel to be decreased, while the remaining channels maintain their initial values. After completion, the single-channel and total power limits are reconfirmed, and it is recorded whether the limitation is triggered. The resulting second brightness compensation value can be directly used to generate the second drive current for each channel, resulting in a smoother visual experience and more robust light mixing consistency.

[0097] Preferably, adjusting the first driving current in response to a change in the beam angle, based on the changed second actual angle value, includes: S61. Difference is made between the second actual angle value and the first actual angle to obtain the second angle deviation information, wherein the second angle deviation information includes the deviation direction, the deviation magnitude and the angle change rate; Specifically, the second actual angle value is the current beam angle reading after zooming, and the first actual angle is the previous stable angle before zooming. The difference is used to obtain the direction (wider / narrower), magnitude (which can be directly the specific value of the angle difference), and rate of angle change (angle difference divided by time interval) of this change. This step transforms the user's focusing action into an executable control quantity, providing a clear input for subsequent brightness adjustment. First, the two angle readings are de-jittered and their validity is checked. Then, the angle difference and sampling interval are calculated to obtain the speed. For extremely small changes, a micro-threshold is set to suppress jitter, and the direction, amplitude, and speed are recorded together as the second angle deviation information.

[0098] S62. Based on the second angle deviation information, obtain the angle dynamic characteristics, wherein the angle dynamic characteristics include angle change acceleration and angle change jerk. Angular change acceleration reflects the rate of speed increase or decrease, while angular change jerk reflects the degree of abrupt acceleration change. By acquiring these two parameters, it is possible to identify whether focusing is a gradual slide or a sudden stop and turn, thus providing a basis for controlling the smoothness of brightness changes. In implementation, the system continuously reads recent speed samples, calculates the acceleration by the difference between adjacent speeds, and then calculates the jerk by the difference between adjacent accelerations. Extreme values ​​within a short window are limited and slightly smoothed, and classified into low / medium / high dynamic levels according to thresholds. Subsequent brightness adjustments can adaptively become more stable or more sensitive based on the actual control force, reducing the risk of overshoot and visual abrupt changes.

[0099] S63. Based on the second angle deviation information and the beam angle sensitivity parameter, perform a brightness impact assessment to obtain a third brightness compensation value and an upper limit for the brightness change slope. The third brightness compensation value represents the target amount of brightness that needs to be increased or decreased overall (which can be a percentage or an equivalent current increment); the upper limit of the brightness change slope represents the upper limit of the allowable brightness change rate, mapping the angle change to how much should be compensated and how fast it is allowed to be compensated. In implementation, the total compensation amount required for this time is first obtained by continuously mapping the aforementioned angle-illuminance compensation data, and then the amplitude is limited by combining the target brightness level and the current power / heat margin; then, the upper limit of the change slope is given according to the visual requirements and power supply immunity requirements (for example, for a larger angle difference, a higher but still limited change rate is allowed), which ensures that the center illuminance can return to the desired level, while controlling the change rate to avoid glare, flicker and power supply impact.

[0100] S64. Constrain and synthesize the upper limit of the brightness adjustment slope according to the dynamic features of the angle to obtain the target brightness adjustment slope; The target brightness adjustment slope is the actual rate of change used in this linear adjustment. It matches the speed limit given in the previous step with the current dynamic intensity, ensuring both responsiveness and avoiding overshoot. In implementation, the slope limit is first constrained in stages based on acceleration and jerk levels: the higher the dynamic level, the closer the slope is to the limit; the lower the dynamic level, the more strictly the slope converges, ensuring that brightness changes are synchronized with the focusing action, while maintaining smoothness and stability, reducing the need for secondary corrections.

[0101] S65. Based on the third brightness compensation value and the beam angle sensitivity parameter, channel target allocation is performed to obtain the fourth brightness compensation value for each color temperature channel. Specifically, the fourth brightness compensation value is the brightness increase or decrease target that each channel should achieve after being allocated to each channel. For example, rather than limiting it, when a wider angle requires an overall increase of 12% brightness, if the beam angle sensitivity parameters of the warm / medium / cool color temperature channels are high / high / medium in the current situation, then the target amount will be allocated more to the warm and medium channels, and less to the cool channel.

[0102] First, based on the direction and magnitude of the angle deviation, the corresponding channel influence strength relationship is selected from the established parameters to form the allocation weight; The third brightness compensation value is then divided into initial target values ​​for each channel according to weights, and electrical and thermal constraint checks are performed: if a channel is close to the current limit or power limit, its target value is limited, and the limited part is renormalized among the other channels according to the current weights to ensure total conservation. If there is insufficient channel capacity and the symmetrical counterpart channel is also restricted, the remaining target quantity can be taken over by the medium-color channel to ensure that the allocation is executable.

[0103] The fourth brightness compensation value obtained through the above processing not only reflects the channel differences but also meets the power and thermal safety boundaries. The beneficial effects are: faster recovery of center illuminance, smoother dynamics, no overload of a single channel, and clear and stable judgment of the arrival of each channel during subsequent linear adjustment.

[0104] S66. Based on the fourth brightness compensation value and the target brightness adjustment slope, the second driving current of the corresponding color temperature channel is linearly adjusted.

[0105] Specifically, linear adjustment refers to continuously changing the channel current at a fixed slope until each channel reaches the target increase or decrease corresponding to the fourth brightness compensation value. The goal is to push the current to the target at a uniform and perceptibly smooth pace, rather than abrupt changes or multiple attempts. In implementation, all channels start with the same target slope and are continuously adjusted. The channel that reaches the target first is immediately frozen, while the remaining channels continue. Throughout the linear process, overcurrent, power, and thermal limiting checks are continuously performed, and the slope is reduced in real time if necessary to ensure safety. The resulting benefits are: smooth brightness changes without any noticeable steps, providing a natural and consistent perception of brightness for the user during focusing.

[0106] It should be clarified that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of the present invention.

[0107] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0108] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0109] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0110] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0111] It should also be noted that the exemplary embodiments mentioned in this invention describe methods or systems based on a series of steps or apparatus. However, this invention is not limited to the order of the steps described above; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0112] The above description is merely a specific embodiment of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A multifunctional adjustable rail light, characterized in that, include: The lamp body includes an LED light source and a connection structure for connecting to a guide rail, wherein the LED light source includes LED beads with different color temperature channels; A beam angle adjustment component is disposed in the lamp body and is used to adjust the beam angle of the LED light source; A light source adjustment component is electrically connected to the LED light source, and the light source adjustment component includes a color temperature adjustment module, a power adjustment module, and a power supply module; The power supply module is electrically connected to the color temperature adjustment module and the power adjustment module. The color temperature adjustment module is used to selectively control the lighting state of LED beads with different color temperatures or adjust the brightness ratio of each color temperature LED bead to obtain the target color temperature output. The power adjustment module is used to adjust the driving current or power output of the LED light source.

2. The multifunctional adjustable rail light according to claim 1, characterized in that, The beam angle adjustment assembly includes a focusing ring, an optical lens, and a frog-eye lens. The focusing ring is used to move the optical lens or frog-eye lens relative to the LED light source along the optical axis to adjust the beam angle. The adjustment range of the beam angle is 24~63°.

3. The multifunctional adjustable rail light according to claim 1, characterized in that, The LED light source includes at least two sets of LED beads with different color temperature channels. The color temperature adjustment module includes a color temperature DIP switch and a current switching circuit. The current switching circuit is connected to the color temperature DIP switch. The current switching circuit includes a switching network consisting of switching devices corresponding to each color temperature channel and current control resistors. The color temperature DIP switch is used to selectively connect / disconnect the switching network or change its connection method, thereby changing the current distribution of different color temperature channels and adjusting the brightness ratio and color temperature of the LED beads.

4. The multifunctional adjustable rail light according to claim 1, characterized in that, The power adjustment module includes a multi-level current adjustment circuit, which consists of multiple first resistors and corresponding switching devices forming multiple current paths, each current path corresponding to a current level; the power adjustment module also includes a power DIP switch for selecting different current paths to adjust the driving current of the LED light source and change the output power.

5. The multifunctional adjustable rail light according to claim 4, characterized in that, The power DIP switch is connected to the control terminals of multiple gating devices. The multiple current paths each include a second resistor connected in series and a corresponding gating device. The power DIP switch is used to selectively turn on the gating devices, so that the corresponding current path is connected to or disconnected from the constant current control loop, thereby adjusting the driving current and power output of the LED light source.

6. The multifunctional adjustable rail light according to claim 5, characterized in that, The light source adjustment component also includes a main control chip, which is connected to a feedback control circuit. The feedback control circuit includes a feedback resistor and is used to obtain the operating current of the LED light source and transmit it to the main control chip. The main control chip adjusts the driving current of the LED light source according to the operating current. The power module includes an input rectifier and filter circuit and a main control chip power supply circuit. The input rectifier and filter circuit is used to rectify AC power into DC power. The main control chip power supply circuit includes an auxiliary winding for powering the main control chip. The output rectifier and filter circuit is used to provide a stable DC drive voltage for the LED light source.

7. A control method for a multifunctional adjustable rail light, characterized in that, The method for the multi-functional adjustable rail light according to any one of claims 3-6 comprises: In response to a switching command, obtain the position information of the power DIP switch and the color temperature DIP switch; Based on the gear information, obtain the target brightness and target color temperature; Based on the target brightness and the target color temperature, obtain the brightness percentage of LED beads in different color temperature channels; Based on the brightness ratio, obtain the first driving current of the LED beads for each color temperature channel; The multi-functional adjustable rail light is controlled to provide illumination based on the first driving current and the first actual angle value of the beam angle. In response to the change in the beam angle, the first driving current is adjusted according to the changed second actual angle value.

8. The control method according to claim 7, characterized in that, The step of controlling the multi-functional adjustable rail light to provide illumination based on the first actual angle value of the first driving current and the beam angle includes: The first actual angle value of the LED light source is obtained through the beam angle adjustment component; The first actual angle value and the reference angle value are compared to obtain the first angle deviation information, wherein the angle deviation information includes the deviation direction and the deviation magnitude; Based on the angle deviation information and the target brightness, a first brightness compensation value is obtained; According to the preset beam angle sensitivity parameter of each color temperature channel, the first brightness compensation value is allocated to each color temperature channel to obtain the second brightness compensation value of each color temperature channel. The beam angle sensitivity parameter is used to characterize the degree of influence of different color temperature channels on the target illuminance when the beam angle changes relative to the reference angle value. The second driving current of each color temperature channel is obtained by adjusting the second brightness compensation value and the first driving current of each color temperature channel. The LED beads in each color temperature channel are driven to provide illumination based on the second driving current.

9. The control method according to claim 8, characterized in that, The step of allocating the first brightness compensation value to each color temperature channel according to the preset beam angle sensitivity parameter of each color temperature channel to obtain the second brightness compensation value of each color temperature channel includes: performing brightness allocation weighting according to the angle deviation information and the beam angle sensitivity parameter to obtain the brightness allocation weight value of each color temperature channel, wherein the brightness allocation weight value and the beam angle sensitivity parameter are positively correlated. The initial brightness compensation value for each color temperature channel is obtained by proportionally allocating the first brightness compensation value and the brightness allocation weight value. Based on the first driving current of each color temperature channel and the initial brightness compensation value, the intermediate driving current of each color temperature channel is obtained. The actual color temperature value is obtained by estimating the mixed color temperature based on the intermediate driving current of each color temperature channel. The color temperature deviation amount and direction are obtained by comparing the actual color temperature value with the target color temperature. Based on the direction of the color temperature deviation, select the channels to be added and the channels to be reduced in the color temperature channels; Based on the color temperature deviation, obtain the compensation correction amount for each channel to be added and each channel to be reduced; The compensation correction amount is added to the initial brightness compensation value of the channel to be added, and the compensation correction amount is reduced to the initial brightness compensation value of the channel to be reduced, to obtain the second brightness compensation value of each color temperature channel, wherein the second brightness compensation value of the color temperature channels other than the channel to be added and the channel to be reduced is the initial brightness compensation value.

10. The control method according to claim 8, characterized in that, The adjustment of the first driving current in response to a change in the beam angle, based on the changed second actual angle value, includes: The second angle deviation information is obtained by subtracting the second actual angle value from the first actual angle value. The second angle deviation information includes the deviation direction, the deviation magnitude, and the angle change rate. Based on the second angle deviation information, the angle dynamic characteristics are obtained, wherein the angle dynamic characteristics include angle change acceleration and angle change jerk. Based on the second angle deviation information and the beam angle sensitivity parameter, a brightness impact assessment is performed to obtain a third brightness compensation value and an upper limit for the brightness change slope. Based on the dynamic angular characteristics, the upper limit of the brightness adjustment slope is constrained and synthesized to obtain the target brightness adjustment slope; Based on the third brightness compensation value and the beam angle sensitivity parameter, channel target allocation is performed to obtain the fourth brightness compensation value for each color temperature channel; Based on the fourth brightness compensation value and the target brightness adjustment slope, the second driving current of the corresponding color temperature channel is linearly adjusted.

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