Wireless control based borderless full spectrum projection tube lamp

Abstract

This invention discloses a frameless full-spectrum projection downlight based on wireless control, belonging to the field of lighting technology. It features a matched multi-chip array light source board and diffuser, with LED chip groups arranged in radial multi-ring and circumferential multi-sector configurations spatially matched with diffuser light distribution modules having corresponding ring and sector optical microstructures. Through precise PWM control via multiple independent drive channels, it achieves independent adjustment of four-dimensional parameters: beam angle, light direction, color temperature, and brightness. The intelligent light control system with a fully electrical path replaces the traditional mechanical transmission structure, achieving silent intelligent light control with no mechanical wear and millisecond-level response. It collects environmental parameters, lamp status parameters, and user activity parameters in real time, and the processed system state vector identifies the current scene label. It drives each chip group to emit light collaboratively using a matching light parameter strategy, achieving a deep fusion effect of people, environment, and light based on multi-dimensional perception and scene adaptive algorithms.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and more specifically, to a frameless full-spectrum projection downlight based on wireless control. Background Technology

[0002] With the rapid development of smart homes, lighting products are undergoing a profound transformation from single-function to intelligent and personalized. As an important component of indoor and outdoor lighting, projection downlights directly affect the lighting experience and energy efficiency by adjusting the light emission angle, light coverage, and light color quality.

[0003] For example, the "Intelligent Frameless Full-Projection Downlight System Based on Adjustable Light Emission Angle" published in CN121429979A proposes a mechanical solution for multi-dimensional light adjustment through multiple drive components and linkage mechanisms. This solution controls the control rod and sleeve structure through drive component two and drive component three, drives the deflection column to drive the lamp panel assembly to deflect at multiple angles, and at the same time combines the rotary tooth sleeve to drive the reflector cup to extend and retract, thereby realizing mechanical adjustment of projection direction, light coverage range and brightness intensity. Under the constraint of frameless structure, it expands the optical adjustment dimension of downlights and provides a useful technical exploration for intelligent lighting and projection systems.

[0004] However, in practical applications, the above-mentioned purely mechanical drive scheme still has the following areas for optimization:

[0005] 1. Lack of sensing capability and reliance on preset commands for adjustment: Although the solution achieves electric adjustment, the adjustment accuracy depends entirely on the processing accuracy and assembly consistency of the mechanical transmission components. After long-term use, wear and tear may cause deviations, making it difficult to achieve closed-loop calibration. It lacks real-time sensing of dynamic information such as ambient light, human activity, and the thermal state of the lamp itself. The adjustment behavior can only respond to preset commands and cannot autonomously optimize light parameters according to the actual scene, making it difficult to meet complex and ever-changing usage needs.

[0006] 2. Separation of heat dissipation and control, and insufficient intelligent thermal management: The heat dissipation fins are only installed inside the lamp housing, without taking into account the heat generation characteristics of the control unit (such as the driver chip and wireless communication module) when it is working. When multiple drive components work together, local temperature rise may affect control stability, but the system lacks the ability to actively adjust the working parameters according to the thermal state.

[0007] 3. Limited human-computer interaction and lack of scene adaptation capabilities: The adjustment method is limited to preset command triggers and cannot perceive scene information such as user activity type and dwell time, making it difficult to achieve scene-based intelligent lighting experiences such as "lights turn on when people come and dim when people leave", "reading mode" or "leisure mode".

[0008] In response to the aforementioned practical shortcomings, it is necessary to introduce a multi-dimensional intelligent sensing and fusion control mechanism while maintaining the advantages of the frameless structure and mechanical adjustment capabilities. This would upgrade the pure mechanical drive into a fusion control system of "mechanical + intelligent sensing," enabling the downlight to have environmental self-adaptation, closed-loop calibration, scene recognition, and collaborative optimization capabilities, thereby further improving the intelligence level of lighting and the user experience. Summary of the Invention

[0009] The purpose of this invention is to address practical shortcomings. It provides a frameless full-spectrum projection downlight based on wireless control. While maintaining the frameless aesthetic design, it achieves intelligent light control through an all-electrical path without any mechanical moving parts. It has the advantages of simple structure, high reliability, intelligent sensing, and scene adaptation.

[0010] The objective of this invention can be achieved through the following technical solution: a frameless full-spectrum projection downlight based on wireless control, comprising a lamp body module, a multi-dimensional sensing module, a wireless communication module, and an intelligent control unit;

[0011] The lamp body module includes a lamp housing, a heat sink, a multi-chip array light source board, a control board, and a diffuser. The lamp housing is used to be embedded in the ceiling opening. The heat sink is fixedly installed in the lamp housing, and the multi-chip array light source board and the control board are electrically connected to each other on the back of the heat sink. The multi-chip array light source board integrates multiple sets of LED chips. The multiple sets of LED chips are arranged in a radial multi-layer ring and a circumferential multi-sector arrangement to form multiple independently controllable chip groups. The diffuser is fixedly covered on the light-emitting surface of the multi-chip array light source board. The diffuser is provided with multiple light distribution modules that correspond one-to-one with the chip groups in space and have specific optical microstructures.

[0012] The multi-dimensional sensing module is installed inside the lamp housing and is used to collect multi-source sensing data consisting of environmental parameters, lamp status parameters and user activity parameters.

[0013] The wireless communication module is used to receive external control signals and communicate with adjacent lamps;

[0014] The intelligent control unit is electrically connected to the multi-dimensional sensing module, the wireless communication module, and the multi-chip array light source board. It is used to independently adjust the driving parameters of each chip group according to the multi-source sensing data and control signals, so as to change at least one of the following: the light beam angle, the light direction, the color temperature, or the brightness.

[0015] Furthermore, a recessed mounting groove is provided on the back of the heat sink. The recessed mounting groove includes a central circular area and an edge annular area surrounding the central circular area. The central circular area is used to install the multi-chip array light source board, and the edge annular area is used to install the control board. The intelligent control unit and the wireless communication module are integrated on a control board, and the back of the multi-chip array light source board and the control board are attached to the heat sink through a thermally conductive medium.

[0016] Furthermore, the multiple sets of LED chips include chips with at least two color temperatures, at least divided into cool white chip groups and warm white chips. The multiple sets of chips are radially divided into a central ring area, an intermediate ring area and an outer ring area on the multi-chip array light source board, and circumferentially divided into multiple light-emitting sectors arranged in multiple sectors, forming multiple independently controllable minimum control units.

[0017] Furthermore, the light distribution module on the diffuser includes a central ring light distribution area, an intermediate ring light distribution area, and an outer ring light distribution area that are adapted to the positions of the central ring area, the intermediate ring area, and the outer ring area.

[0018] The central ring light distribution area has a first optical microstructure for generating a narrow beam angle, the middle ring light distribution area has a second optical microstructure for generating a middle beam angle, and the outer ring light distribution area has a third optical microstructure for generating a wide beam angle.

[0019] The central ring light distribution area, the middle ring light distribution area, and the outer ring light distribution area are further divided into multiple light emission sectors corresponding to the light emission sectors along the circumference, forming multiple minimum light distribution units corresponding to the position of the minimum control unit. The minimum light distribution units in each sector are used to control the light emission in the corresponding direction.

[0020] Furthermore, the first, second, and third optical microstructures are selected from at least one of microlens arrays, prism structures, pyramid structures, or V-grooves.

[0021] Furthermore, the multi-dimensional sensing module includes at least two of the following sensors: ambient light sensor, color sensor, infrared human body sensor or millimeter-wave radar, and temperature sensor, for collecting environmental parameters, lighting status parameters, and user activity parameters.

[0022] Furthermore, the intelligent control unit includes a data fusion submodule, a scene recognition submodule, and a drive control submodule;

[0023] The data fusion submodule is used to receive multi-source sensing data collected by the multi-dimensional sensing module, perform time alignment, confidence assessment and weighted fusion of the multi-source sensing data, and generate a multi-dimensional system state vector.

[0024] The scene recognition submodule is used to input the multi-dimensional system state vector into the built-in scene classification model based on decision tree or random forest, output the current scene label, and match the preset light parameter strategy of the current scene label, including target beam angle, target light direction, target color temperature and target brightness.

[0025] The drive control submodule is used to generate PWM drive signals for each chipset according to the optical parameter strategy.

[0026] Furthermore, the specific process by which the drive control submodule generates the PWM drive signal based on the optical parameter strategy includes:

[0027] Based on the target beam angle, determine the beam angle contribution coefficient of each ring area chip group, where the beam angle contribution coefficient represents the proportion of relative luminous flux required by each ring area to achieve the target beam angle;

[0028] Based on the target light direction, determine the directional distribution coefficient of each sector chip group, where the directional distribution coefficient represents the ratio of relative luminous flux required by each sector to achieve the target light direction;

[0029] Based on the beam angle contribution coefficient and the directional distribution coefficient, the spatial distribution coefficient of each chip group is calculated. The spatial distribution coefficient is the product of the beam angle contribution coefficient of the ring region where the corresponding chip group is located and the directional distribution coefficient of the sector where it is located.

[0030] Based on the target color temperature, determine the color temperature mixing coefficient of each chip group, which includes the cool white ratio coefficient of the cool white chip group and the warm white ratio coefficient of the warm white chip group.

[0031] Calculate the target PWM duty cycle for each chipset based on the target brightness, spatial distribution coefficient, and color temperature mixing coefficient.

[0032] The target PWM duty cycle is output as a driving parameter to the corresponding driving channel register of each chipset, so that the driving channel outputs a PWM waveform with the corresponding duty cycle to independently drive each chipset to emit light at the target brightness.

[0033] Furthermore, the scene recognition submodule also records historical data of manual adjustments by the user, and updates the preset light parameter strategy through incremental learning to achieve personalized adaptation.

[0034] Compared with the prior art, the advantages of this invention are:

[0035] 1. This invention sets up a matching multi-chip array light source board and diffuser cover. By spatially matching the LED chip group arranged in radial multi-layer rings and circumferential multi-sectors with the diffuser cover light distribution module with corresponding ring and sector optical microstructures, and through precise PWM control of multiple independent drive channels, the four-dimensional parameters of beam angle, light direction, color temperature and brightness can be independently adjusted, realizing silent intelligent light control with no mechanical wear and millisecond-level response and continuous adjustment.

[0036] 2. This invention also uses the data fusion submodule to perform time alignment, confidence assessment and weighted fusion of environmental parameters, lamp status parameters and user activity parameters collected by the multi-dimensional sensing module to generate a system state vector. Then, the scene recognition submodule identifies the current scene label, matches the light parameter strategy and drives each chip group to emit light in synergy. At the same time, the self-learning algorithm records the user's manual adjustment history and updates the light parameter strategy to achieve a dynamic balance between people, environment and light. This realizes a green and intelligent lighting experience with scene adaptive recognition, personalized lighting preference learning and light turning on when people come and dimming when people leave.

[0037] 3. In addition, the multi-chip array light source board and the control board are coplanarly embedded in the sunken mounting groove of the heat sink, and the back of both are directly attached to the heat sink through the heat-conducting medium. At the same time, the fixed diffuser is flush with the opening end of the lamp housing, so as to achieve the effect of the light source and the control module sharing the heat dissipation channel and the metal heat sink forming a natural electromagnetic shield. This achieves efficient heat dissipation under the ultra-thin frameless structure, stable and reliable wireless communication, and improved reliability of the whole machine in long-term operation. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the frameless full-spectrum projection downlight based on wireless control proposed in this invention. Figure 1 ;

[0039] Figure 2 This is a schematic diagram of the frameless full-spectrum projection downlight based on wireless control proposed in this invention. Figure 2 ;

[0040] Figure 3 This is an exploded view of the frameless full-spectrum projection downlight based on wireless control proposed in this invention;

[0041] Figure 4 This is a split view of the heat sink and multi-chip array light source board of the frameless full-spectrum projection downlight based on wireless control proposed in this invention.

[0042] Figure 5 This is a block diagram of the module system of the intelligent control link of the present invention;

[0043] Figure 6 This is a schematic diagram of the internal structure of the intelligent control module of the present invention.

[0044] Explanation of the labels in the diagram:

[0045] 1. Lamp housing; 2. Heat sink; 3. Multi-chip array light source board; 4. Control board; 5. Heat sink fins; 6. Diffuser; 601. Central ring light distribution area; 602. Middle ring light distribution area; 603. Outer ring light distribution area. Detailed Implementation

[0046] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0047] Example 1: This invention discloses a frameless full-spectrum projection downlight based on wireless control. Please refer to [link / reference]. Figures 1-4 It includes a lamp body module, a multi-dimensional sensing module, a wireless communication module, and an intelligent control unit;

[0048] The lamp body module includes a lamp housing 1, a heat sink 2, a multi-chip array light source board 3, a control board 4, and a diffuser 6. The lamp housing 1 is cylindrical and is used to be embedded in the ceiling opening. The heat sink 2 is fixedly installed inside the lamp housing 1, and the multi-chip array light source board 3 and the control board 4, which are electrically connected, are installed on the back of the heat sink 2. The heat sink 2 is integrally die-cast from aluminum alloy and is fixed inside the lamp housing 1. Its back is provided with a recessed mounting groove, which includes a central circular area and an edge annular area surrounding the central circular area. The central circular area is used to install the multi-chip array light source board 3, and the edge annular area is used to install the control board 4. The back of the multi-chip array light source board 3 and the control board 4 are attached to the heat sink 2 through a heat-conducting medium. The outer periphery of the heat sink 2 is provided with multiple heat dissipation fins 22, which face the inner side of the ceiling above to facilitate natural convection heat dissipation.

[0049] The multi-chip array light source board 3 integrates multiple sets of LED chips. The multiple sets of LED chips are arranged in a radial multi-layer ring and a circumferential multi-sector arrangement to form multiple independently controllable chip groups. The diffuser 6 is fixedly covered on the light-emitting surface of the multi-chip array light source board 3 and is connected and installed with the inner edge of the opening end of the lamp housing 1 to form a frameless visual effect.

[0050] More specifically, the multiple LED chip groups include chips with at least two color temperatures and / or chips with at least two colors, and are at least divided into cool white chip groups and warm white chip groups. The multiple chip groups are radially divided into a central ring area, an intermediate ring area and an outer ring area on the multi-chip array light source board 3, and circumferentially divided into multiple light-emitting sectors arranged in multiple sectors to form multiple independently controllable minimum control units. Each minimum control unit consists of 2-4 chips of the same color connected in series or in parallel, and shares the same driving channel.

[0051] The diffuser 6 is injection molded from optical-grade PMMA material. Multiple light distribution modules with specific optical microstructures are provided on its light-emitting surface, which correspond one-to-one with the chipset in space. The light distribution modules include a central ring light distribution area 601, a middle ring light distribution area 602, and an outer ring light distribution area 603, which are adapted to the positions of the central ring area, the middle ring area, and the outer ring area.

[0052] The central ring light distribution area 601 has a first optical microstructure for generating a narrow beam angle, the middle ring light distribution area 602 has a second optical microstructure for generating a middle beam angle, and the outer ring light distribution area 603 has a third optical microstructure for generating a wide beam angle. The first, second, and third optical microstructures are selected from at least one of microlens array, prism structure, pyramid structure, or V-groove.

[0053] The central ring light distribution area 601, the middle ring light distribution area 602 and the outer ring light distribution area 603 are further divided into multiple light emission sectors corresponding to the light emission sector along the circumference, forming multiple minimum light distribution units corresponding to the position of the minimum control unit. The minimum light distribution units in each sector are used to control the light emission in the corresponding direction.

[0054] Each minimum control unit corresponds to a minimum light distribution unit. The minimum light distribution unit has a specific optical microstructure on the diffuser. The intelligent control unit independently adjusts the driving parameters of each minimum control unit to achieve fine adjustment of the beam shape, beam angle and light output direction.

[0055] Example 2: The intelligent control unit and the wireless communication module are integrated on a control board 4;

[0056] Please see Figures 5-6The multi-dimensional sensing module is installed inside the lamp housing 1 and includes at least two of the following sensors: ambient light sensor, color sensor, infrared human body sensor or millimeter-wave radar, and temperature sensor. It is used to collect environmental parameters, lamp status parameters, and user activity parameters. The module is used to collect multi-source sensing data composed of environmental parameters, lamp status parameters, and user activity parameters. Among them, the environmental parameters include at least ambient illuminance, ambient color temperature, ambient spectrum, and ambient temperature. The lamp status parameters include at least LED substrate temperature, heat sink temperature, driver circuit temperature, multi-chip array light source board voltage, and current of each channel. The user activity parameters include at least the presence status of personnel, number of personnel, activity type, dwell time, movement trajectory, and human posture.

[0057] The wireless communication module is used to receive external control signals (external control terminals such as mobile APP / voice) and to network and communicate with the multi-chip array light source board and control board of adjacent lamps.

[0058] The intelligent control unit is electrically connected to the multi-dimensional sensing module, the wireless communication module, and the multi-chip array light source board 3. It is used to independently adjust the driving parameters of each chip group according to the multi-source sensing data and control signals to change at least one of the following: the light beam angle, the light direction, the color temperature, or the brightness.

[0059] The specific intelligent control principle is as follows: The intelligent control unit includes a data fusion submodule, a scene recognition submodule, and a drive control submodule;

[0060] The data fusion submodule receives multi-source sensing data collected by the multi-dimensional sensing module, performs time alignment, confidence assessment, and weighted fusion on the multi-source sensing data, and generates a multi-dimensional system state vector. Specifically, it performs time alignment on the multi-source sensing data to generate aligned original measurement vectors, evaluates the confidence of the original measurement values ​​of each sensor (the confidence level is determined based on the sensor's basic reliability, aging factor, and consistency with the predicted value), performs weighted averaging on the multiple sensor measurements of the same physical quantity to obtain fused state components, and combines all fused state components into a multi-dimensional system state vector. This vector contains comprehensive information about the current environment, lighting status, and user activities, and serves as the basis for subsequent scene recognition and control decisions.

[0061] The scene recognition submodule is used to input the multi-dimensional system state vector into the built-in scene classification model based on decision tree or random forest, output the current scene label such as reading, leisure, party, sleep, no one, etc., and match the light parameter strategy preset by the current scene label. The light parameter strategy includes target beam angle, target light direction, target color temperature and target brightness. For example, in reading mode, the preset color temperature is 4500K, brightness is 80%, beam angle is 30° and direction is 0°.

[0062] The drive control submodule is used to generate PWM drive signals for each chipset according to the optical parameter strategy.

[0063] The specific process by which the drive control submodule generates the PWM drive signal based on the optical parameter strategy includes:

[0064] Based on the target beam angle, the beam angle contribution coefficient of each ring region chip group corresponding to the target beam angle is queried from the pre-stored beam angle-ring region contribution mapping table. The beam angle contribution coefficient represents the relative luminous flux ratio that each ring region needs to provide to achieve the target beam angle.

[0065] Based on the target light direction, the directional distribution coefficient of each sector chip group is determined. Here, the directional distribution coefficient of each sector is calculated using a cosine attenuation model or a Gaussian distribution model based on the angle between the target light direction and the center direction of each sector. The directional distribution coefficient represents the proportion of relative luminous flux required by each sector to achieve the target light direction.

[0066] Based on the beam angle contribution coefficient and the directional distribution coefficient, the spatial distribution coefficient of each chip group is calculated. The spatial distribution coefficient is the product of the beam angle contribution coefficient of the ring region where the corresponding chip group is located and the directional distribution coefficient of the sector where it is located.

[0067] Based on the target color temperature, determine the color temperature mixing coefficient of each chip group. The color temperature mixing coefficient includes the cool white ratio coefficient of the cool white chip group and the warm white ratio coefficient of the warm white chip group. Here, the cool white ratio coefficient of the cool white chip group and the warm white ratio coefficient of the warm white chip group are calculated using a linear interpolation formula.

[0068] Calculate the target PWM duty cycle for each chipset based on the target brightness, spatial distribution coefficient, and color temperature mixing coefficient.

[0069] The target PWM duty cycle is output as a driving parameter to the corresponding driving channel register of each chipset, so that the driving channel outputs a PWM waveform with the corresponding duty cycle to independently drive each chipset to emit light according to the target brightness. Each driving channel corresponds to a minimum light control unit for independent light control adjustment. Each chipset is the minimum control unit, and its luminous intensity is uniquely determined by the target PWM duty cycle of the corresponding driving channel. By allocating different brightness ratios among different chipsets, the system can synthesize the required beam angle, light direction, color temperature and total brightness. The luminous intensities of all chipsets are superimposed in space to form the final light field distribution.

[0070] The specific calculation process for the target PWM duty cycle of each chipset includes: for each chipset, calculating the product of its spatial distribution coefficient and the corresponding color temperature mixing coefficient to obtain the comprehensive brightness weight of the chipset; calculating the product of the target brightness and the maximum allowable target PWM duty cycle to obtain the global brightness reference value; and calculating the product of the comprehensive brightness weight and the global brightness reference value to obtain the target PWM duty cycle of each chipset.

[0071] The drive control submodule is also used for:

[0072] The temperature of the multi-chip array light source board 3 is monitored in real time. When the temperature exceeds the preset first temperature threshold, the temperature derating factor is calculated.

[0073] The target PWM duty cycle is corrected based on the temperature derating factor, and the corrected PWM duty cycle is generated and output to each drive channel.

[0074] In addition, the scene recognition submodule also records historical data of manual adjustments by the user, and updates the preset light parameter strategy through incremental learning to achieve personalized adaptation.

[0075] This solution involves threshold comparison. Thresholds, preset values, preset ranges, etc., are set for result comparison and analysis to determine good or bad. The magnitude of these thresholds is determined by a combination of large-scale model analysis of sample data and human experience. They can also be appropriately adjusted based on seasonal or common-sense influencing factors.

[0076] In summary, this invention includes a lamp body module, a multi-dimensional sensing module, a wireless communication module, and an intelligent control module. In the lamp body module, the LED chips on the multi-chip array light source board are arranged in radial multi-layer rings and circumferential multi-sectors to form multiple independently controllable minimum control units. The diffuser covers the light-emitting surface of the light source board to form a borderless visual effect. The multi-dimensional sensing module collects environmental parameters, lamp status parameters, and user activity parameters to form multi-source sensing data. The wireless communication module receives external control signals and networks with adjacent lamps. The intelligent control module receives multi-source data, fuses and identifies the current scene, generates light parameter strategies, and cooperates with the light distribution module on the diffuser that corresponds one-to-one with the chip group and has a specific optical microstructure. This allows for convenient independent adjustment of the driving parameters of each group of LED chips, achieving fine adjustment of beam angle, light direction, color temperature, and brightness, without any mechanical moving parts throughout the process.

[0077] The entire technical solution replaces the traditional mechanical transmission structure with multi-chip independent control of the entire electrical path. Combined with electromechanical-thermal integration and multi-dimensional perception fusion control, it achieves an ultra-thin, frameless aesthetic design while enabling precise adjustment of light parameters, deep perception of the environment and users, and scene self-adaptation and self-learning intelligent lighting effects, significantly improving the product's reliability, intelligence level, and user experience.

[0078] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto; any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solution and improved concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A frameless full-spectrum projection downlight based on wireless control, characterized in that: It includes a lamp body module, a multi-dimensional sensing module, a wireless communication module, and an intelligent control unit; The lamp body module includes a lamp housing (1), a heat sink (2), a multi-chip array light source board (3), a control board (4), and a diffuser (6). The lamp housing (1) is used to be embedded in the ceiling opening. The heat sink (2) is fixedly installed in the lamp housing (1). The back of the heat sink (2) is equipped with an electrically connected multi-chip array light source board (3) and control board (4). The multi-chip array light source board (3) integrates multiple sets of LED chips. The multiple sets of LED chips are arranged in a radial multi-layer ring and a circumferential multi-sector arrangement to form multiple independently controllable chip groups. The diffuser (6) is fixedly covered on the light-emitting surface of the multi-chip array light source board (3). The diffuser (6) is provided with multiple light distribution modules that correspond one-to-one with the chip groups in space and have specific optical microstructures. The multi-dimensional sensing module is set inside the lamp housing (1) and is used to collect multi-source sensing data consisting of environmental parameters, lamp status parameters and user activity parameters; The wireless communication module is used to receive external control signals and communicate with adjacent lamps; The intelligent control unit is electrically connected to the multi-dimensional sensing module, the wireless communication module, and the multi-chip array light source board. It is used to independently adjust the driving parameters of each chip group according to the multi-source sensing data and control signals, so as to change at least one of the following: the light beam angle, the light direction, the color temperature, or the brightness.

2. The frameless full-spectrum projection downlight based on wireless control according to claim 1, characterized in that: The heat sink (2) has a recessed mounting groove on its back. The recessed mounting groove includes a central circular area and an edge annular area surrounding the central circular area. The central circular area is used to install the multi-chip array light source board (3), and the edge annular area is used to install the control board (4). The intelligent control unit and the wireless communication module are integrated on a control board (4), and the back of the multi-chip array light source board (3) and the control board (4) are attached to the heat sink (2) through a heat-conducting medium.

3. The frameless full-spectrum projection downlight based on wireless control according to claim 1, characterized in that: The multiple sets of LED chips include chips with at least two color temperatures, and are at least divided into cool white chip groups and warm white chips. The multiple sets of chips are radially divided into a central ring area, an intermediate ring area and an outer ring area on the multi-chip array light source board (3), and are circumferentially divided into multiple light-emitting sectors arranged in multiple sectors to form multiple independently controllable minimum control units.

4. The frameless full-spectrum projection downlight based on wireless control according to claim 3, characterized in that: The light distribution module on the diffuser includes a central ring light distribution area (601), a middle ring light distribution area (602), and an outer ring light distribution area (603) that are adapted to the positions of the central ring area, the middle ring area, and the outer ring area. The central ring light distribution area (601) has a first optical microstructure for generating a narrow beam angle, the middle ring light distribution area (602) has a second optical microstructure for generating a middle beam angle, and the outer ring light distribution area (603) has a third optical microstructure for generating a wide beam angle. The central ring light distribution area (601), the middle ring light distribution area (602) and the outer ring light distribution area (603) are further divided into multiple light emission sectors corresponding to the light emission sector along the circumference, forming multiple minimum light distribution units corresponding to the position of the minimum control unit. The minimum light distribution units in each sector are used to control the light emission in the corresponding direction.

5. The frameless full-spectrum projection downlight based on wireless control according to claim 4, characterized in that: The first, second, and third optical microstructures are selected from at least one of microlens arrays, prism structures, pyramid structures, or V-grooves.

6. The frameless full-spectrum projection downlight based on wireless control according to claim 4, characterized in that: The multi-dimensional sensing module includes at least two of the following sensors: ambient light sensor, color sensor, infrared human body sensor or millimeter-wave radar, and temperature sensor, used to collect environmental parameters, lighting status parameters, and user activity parameters.

7. The frameless full-spectrum projection downlight based on wireless control according to claim 6, characterized in that: The intelligent control unit further includes a data fusion submodule, a scene recognition submodule, and a drive control submodule; The data fusion submodule is used to receive multi-source sensing data collected by the multi-dimensional sensing module, perform time alignment, confidence assessment and weighted fusion of the multi-source sensing data, and generate a multi-dimensional system state vector. The scene recognition submodule is used to input the multi-dimensional system state vector into the built-in scene classification model based on decision tree or random forest, output the current scene label, and match the preset light parameter strategy of the current scene label, including target beam angle, target light direction, target color temperature and target brightness. The drive control submodule is used to generate PWM drive signals for each chipset according to the optical parameter strategy.

8. The frameless full-spectrum projection downlight based on wireless control according to claim 7, characterized in that: The specific process by which the drive control submodule generates the PWM drive signal based on the optical parameter strategy includes: Based on the target beam angle, determine the beam angle contribution coefficient of each ring area chip group, where the beam angle contribution coefficient represents the proportion of relative luminous flux required by each ring area to achieve the target beam angle; Based on the target light direction, determine the directional distribution coefficient of each sector chip group, where the directional distribution coefficient represents the ratio of relative luminous flux required by each sector to achieve the target light direction; Based on the beam angle contribution coefficient and the directional distribution coefficient, the spatial distribution coefficient of each chip group is calculated. The spatial distribution coefficient is the product of the beam angle contribution coefficient of the ring region where the corresponding chip group is located and the directional distribution coefficient of the sector where it is located. Based on the target color temperature, determine the color temperature mixing coefficient of each chip group, which includes the cool white ratio coefficient of the cool white chip group and the warm white ratio coefficient of the warm white chip group. Calculate the target PWM duty cycle for each chipset based on the target brightness, spatial distribution coefficient, and color temperature mixing coefficient. The target PWM duty cycle is output as a driving parameter to the corresponding driving channel register of each chipset, so that the driving channel outputs a PWM waveform with the corresponding duty cycle to independently drive each chipset to emit light at the target brightness.

9. The frameless full-spectrum projection downlight based on wireless control according to claim 1, characterized in that: The scene recognition submodule also records historical data of manual adjustments by the user, and updates the preset light parameter strategy through incremental learning to achieve personalized adaptation.

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