Lighting control system, method and lighting device

Abstract

The application relates to a lighting control system, a lighting control method and a lighting device, which comprises a power supply module, an LED driving module, an LED module, a control module and a lens module; the LED driving module is connected with the control module and the LED module respectively, and is used for driving the target light emitting unit of the LED module in a constant current mode according to the control signal of the control module; the control module generates a control signal according to a target lighting mode, wherein the control signal comprises a target lighting parameter; the control signal is sent to the LED driving module, so as to control the LED driving module to drive the target light emitting unit of the LED module to emit light according to the target lighting parameter, and the lens module is controlled to move to a target focal length position according to the target lighting parameter. The lighting control system provided by the application can drive the specified light emitting unit by controlling the LED driving module and control the lens module to move, so that the lighting device can realize the lighting function and the image display function simultaneously.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lighting devices, in particular to a lighting control system, method and lighting device. BACKGROUND

[0002] The existing lighting products generally have single module or multiple modules in series-parallel connection, and do not have the function of independently adjusting the brightness of the LEDs, and the functions are single. The existing lighting products can only uniformly adjust the brightness of all LEDs, and cannot be used for image changes. Generally, only the lighting function is provided, and the dual functions of lighting and image projection cannot be realized. SUMMARY

[0003] Therefore, it is necessary to provide a lighting control system, method and lighting device which can realize the functions of lighting and image projection, and can adjust the brightness of independent LEDs.

[0004] In a first aspect, the present application provides a lighting control system, comprising: a power supply module, an LED driving module, an LED module, a control module and a lens module;

[0005] The power supply module is connected to the LED driving module and the control module respectively, and is used to supply power to the LED driving module and the control module;

[0006] The LED driving module is connected to the control module and the LED module respectively, and is used to drive the target light emitting unit of the LED module in constant current according to the control signal of the control module;

[0007] The control module generates the control signal according to the target lighting mode, wherein the control signal comprises target lighting parameters; the control signal is sent to the LED driving module to control the LED driving module to drive the target light emitting unit of the LED module to emit light according to the target lighting parameters, and control the lens module to move to the target focal length position according to the target lighting parameters.

[0008] In one embodiment, the LED driving module comprises a constant current driving module and an image dimming module connected in parallel; the control module is connected to the constant current driving module and the image dimming module respectively;

[0009] The image dimming module comprises a plurality of transistor switches, the number of the transistor switches is less than or equal to the number of light emitting units in the LED module, and the transistor switches are connected in parallel with the light emitting units;

[0010] The image dimming module is used to cascade multiple transistor switches according to the control signal, so that the target light-emitting unit is in a current-conducting state.

[0011] The constant current drive module is used to adjust the power supply signal according to the control signal to obtain the target output current; and drive the target light-emitting unit to emit light according to the target output current.

[0012] In one embodiment, the power supply module includes a power boost module, one end of which is connected to a power source, and the other end of which is connected to the LED driver module and the control module, respectively.

[0013] The constant current drive module includes a buck driver chip, one end of which is connected to the power boost module, and the other end of which is connected to the LED module.

[0014] In one embodiment, the LED module is a matrix LED or a Micro LED;

[0015] The LED module includes multiple light-emitting units, which are connected in series.

[0016] In one embodiment, the image dimming module further includes a temperature monitoring unit for measuring the PCB temperature of the image dimming module;

[0017] The control module is used to adjust the output power according to the temperature of the PCB board, so as to control the target output current of the constant current drive module to be within a preset current range.

[0018] In one embodiment, the lens module includes a light-collecting lens and a collimating lens, wherein at least one of the light-collecting lens and the collimating lens is a movable lens;

[0019] The control module controls the light-collecting lens and / or the collimating lens to move to the target focal length position according to the target illumination parameters.

[0020] In one embodiment, the target illumination mode includes a light illumination mode and an image projection mode;

[0021] When the target lighting mode is the light lighting mode, the control module controls the lens module to be at the first focal length position according to the target lighting parameters, and controls the LED driving module to drive all the light-emitting units in the LED module to emit light according to the target brightness.

[0022] In a case where the target illumination mode is an image lens mode, the control module controls the lens module to be at a second focal length position according to the target illumination parameter, and controls the LED driving module to drive part of the light emitting units in the LED module to emit light according to the target brightness.

[0023] In a second aspect, the present application further provides a lighting control method, applied to the control module of the lighting control system in the first aspect, comprising:

[0024] obtaining a target illumination mode;

[0025] generating a control signal according to the target illumination mode, wherein the control signal comprises a target illumination parameter;

[0026] sending the control signal to the LED driving module, so as to control the LED driving module to drive the target light emitting units of the LED module to emit light according to the target illumination parameter, and control the lens module to move to a target focal length position according to the target illumination parameter.

[0027] In one of the embodiments, the target illumination mode comprises a light illumination mode and an image projection mode;

[0028] In a case where the target illumination mode is a light illumination mode, the method further comprises:

[0029] controlling the lens module to be at a first focal length position according to the target illumination parameter, and controlling the LED driving module to drive all the light emitting units in the LED module to emit light according to the target brightness;

[0030] In a case where the target illumination mode is an image lens mode, the method further comprises:

[0031] controlling the lens module to be at a second focal length position according to the target illumination parameter, and controlling the LED driving module to drive part of the light emitting units in the LED module to emit light according to the target brightness.

[0032] In a third aspect, the present application further provides a lighting device comprising the lighting control system in the first aspect.

[0033] In summary, the application provides a lighting control system, method and lighting device, comprising: a power supply module, an LED driving module, an LED module, a control module and a lens module; the LED driving module is connected to the control module and the LED module respectively, and is used to drive the target light emitting unit of the LED module in constant current according to the control signal of the control module; the control module generates a control signal according to a target lighting mode, wherein the control signal comprises a target lighting parameter; the control signal is sent to the LED driving module to control the LED driving module to drive the target light emitting unit of the LED module to emit light according to the target lighting parameter, and the lens module is controlled to move to a target focal length position according to the target lighting parameter. The lighting control system provided by the application can drive the specified light emitting unit by controlling the LED driving module, and control the lens module to move, so that the lighting device simultaneously realizes the lighting function and the image display function. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a structural block diagram of the lighting control system in one embodiment;

[0035] Figure 2 It is a circuit schematic diagram of the MCU control unit in one embodiment;

[0036] Figure 3 It is a structural block diagram of the lighting control system in another embodiment;

[0037] Figure 4 It is a circuit schematic diagram of the image dimming module in one embodiment;

[0038] Figure 5 It is a circuit schematic diagram of the power boost module in one embodiment;

[0039] Figure 6 It is a circuit schematic diagram of the step-down constant current driving module in one embodiment;

[0040] Figure 7 It is a schematic diagram of the application scene of the image projection function in one embodiment;

[0041] Figure 8 It is a flowchart of the lighting control method in one embodiment;

[0042] Figure 9 It is an internal structure diagram of the lighting device in one embodiment.

[0043] SUMMARY OF DRAWINGS:

[0044] Power supply module-110; LED driving module-120; constant current driving module-121; image dimming module-122; LED module-130; control module-140; lens module-150. DETAILED DESCRIPTION

[0045] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0046] In the related art, the lighting device is generally used to perform a single function, such as performing a lighting function or performing an image projection function. And the LED light source used by the existing lighting device is usually a single lighting module or a plurality of lighting modules connected in series or in parallel, which does not have the function of independently adjusting the brightness of a single LED. In actual application scenarios, such as stage performance, light performance or outdoor lighting scenarios, the light device simultaneously implements the lighting function, the image projection function and the single LED brightness adjustment function, which can greatly enrich the use range and use mode of the lighting device, and increase the applicability and interest of the light device. And when the lighting device can realize independent adjustment of a single LED, the lighting device can display the projected image more clearly when performing the image projection function, thereby improving the lighting effect of the lighting device.

[0047] As shown in Figure 1 The lighting control system provided by the embodiment of the present application comprises a power supply module 110, an LED driving module 120, an LED module 130, a control module 140 and a lens module 150.

[0048] In the embodiment, the power supply module 110 is connected to the LED driving module 120 and the control module 140 respectively, and the power supply module 110 is used to supply power to the LED driving module 120 and the control module 140. In actual application scenarios, the power supply module 110 can directly supply power to the LED driving module 120 and the control module 140 using a voltage stabilizer, or can supply power to the LED driving module 120 and the control module 140 using a battery pack in cooperation with a voltage adjustment circuit. It should be understood that the electrical signal provided by the power supply module 110 and the specific voltage adjustment function of the voltage adjustment circuit can be adaptively set based on the LED driving module 120 and the control module 140 in actual application scenarios, which is not limited herein.

[0049] The LED driving module 120 is connected to the control module 140 and the LED module 130 respectively, and the LED driving module 120 is used to constant-current drive the target light-emitting unit of the LED module 130 according to the control signal of the control module 140.

[0050] In the embodiment, the LED driving module 120 is connected to the control module 140, and is configured to receive the control signal sent by the control module 140. The control module 140 generates the control signal according to the current lighting function of the lighting device, i.e., generates the control signal according to the target lighting mode. The target lighting mode includes a light illumination mode and an image projection mode. In the light illumination mode, the control module 140 sends the control signal to the LED driving module 120 to drive the LED module 130 to perform the lighting function. In the image projection mode, the control module 140 sends the control signal to the LED driving module 120 to drive the LED module 130 to perform the image projection function.

[0051] It should be noted that constant current driving refers to maintaining a constant current output in a circuit, regardless of the resistance variation of the driven device or the power voltage fluctuation, and the output current is maintained constant. In the embodiment, the LED driving module 120 drives the target light emitting unit of the LED module 130 by constant current driving, which can ensure that the LED light emitting unit obtains stable current, thereby maintaining the stability of the light emitting brightness and performance. Moreover, the LED driving module 120 can effectively limit the size of the current, which can effectively protect the LED light emitting unit and avoid the risk of overcurrent damage.

[0052] The LED driving module 120 is connected to the LED module 130, and is configured to drive the target light emitting unit of the LED module 130 by constant current, so that the target light emitting unit emits light. It should be noted that the LED module 130 in the embodiment can adopt a matrix LED or a Micro LED. In the embodiment, the LED module 130 includes a plurality of light emitting units, and the light emitting units are connected in series. The LED driving module 120 includes a bypass switch connected in parallel with each light emitting unit. When the bypass switch in the LED driving module 120 is turned on by the control of the control module 140, the corresponding light emitting unit is short-circuited, and at this time, the light emitting unit is not lit. When the bypass switch in the LED driving module 120 is turned off by the control of the control module 140, the corresponding light emitting unit is powered on, and at this time, the light emitting unit emits light.

[0053] It should be noted that the LED driving module 120 can control the number of light emitting units connected in series in the LED module 130 to ensure the number of light emitting units in the LED module 130 that perform the current light emitting function of the light emitting device. In the embodiment, the matrix LED or the Micro LED is used as the LED module 130, which can realize light emitting control for a single pixel point, and further realize the dual functions of lighting and image projection under a single light source. It can also realize cascade control of a plurality of light emitting units, and further can more quickly and accurately position the target light emitting unit when the image projection function is realized.

[0054] It should be noted that the series connection of the light emitting units in the LED module 130 in the embodiment can be changed according to the control signal sent by the control module 140. The LED driving module 120 in the embodiment can not only adjust the series connection of the light emitting units in the LED module 130, but also provide a constant output current for the LED module 130, thereby realizing stable and efficient brightness control.

[0055] The control module 140 generates a control signal according to a target illumination mode, wherein the control signal includes a target illumination parameter; sends the control signal to the LED driving module 120 to control the LED driving module 120 to drive the target light emitting unit of the LED module 130 to emit light according to the target illumination parameter, and controls the lens module 150 to move to a target focal length position according to the target illumination parameter.

[0056] In the embodiment, the control module 140 includes a microcontroller unit (MCU) and an MCU related circuit. For example, the MCU control circuit of the control module 140 can be as shown in Figure 2 In actual application, the control module 140 further includes a memory, for example, a register, and the memory stores the target illumination parameter corresponding to the target illumination mode. It should be noted that the specific type of the memory can be selected according to the needs of the actual application scene. In the embodiment, the memory also stores image data used for image or animation display. When the target illumination mode is an image projection mode, the control module 140 will send the image data to the LED driving module 120 together when sending the control signal.

[0057] In the embodiment, the target illumination parameter can include a light emitting unit position (pixel point position), a driving power, a light emitting brightness, a light emitting time, a focal length position, and other parameters corresponding to the target illumination mode.

[0058] After the control module 140 sends the control signal to the LED driving module 120, the LED driving module 120 will drive the specified target light emitting unit to emit light according to the set brightness according to the target illumination parameter. At the same time, the control module 140 is connected to the lens module 150, and the control module 140 sends the corresponding target illumination parameter to the lens module 150 to make the lens module 150 move to the set focal length position, thereby realizing the illumination function or the image projection function.

[0059] In the embodiment, the lens module 150 includes a light collecting lens and a collimating lens, and at least one of the light collecting lens and the collimating lens is a movable lens. The control module 140 controls the light collecting lens and / or the collimating lens to move to the target focal length position according to the target illumination parameter.

[0060] It should be noted that the light collecting lens in the embodiment is used to improve the light emitting efficiency of the light emitting unit in the LED module 130, and the light collecting lens is arranged close to the light source position, and can adopt a high-temperature-resistant lens such as a glass lens or a silica gel lens. The collimating lens is an optical lens that can change the divergent light from the light source into a parallel light column coinciding with the main optical axis. The collimating lens is used for collimating processing of the light signal to ensure that the light signal is emitted according to the set direction.

[0061] In some possible embodiments, the control module 140 further includes an illumination mode display unit and a key control unit.

[0062] As shown in Figure 2 , the illumination mode display unit can be an LED lamp capable of displaying different colors, for example, the MCU related circuit includes a D4 red-green dual-color LED. The D4 red-green dual-color LED can be used to display the target illumination mode. For example, when the illumination device is in the illumination mode, the MCU sends a control signal to make the D4 red-green dual-color LED display red. When the illumination device is in the image projection mode, the MCU sends a control signal to make the D4 red-green dual-color LED display green. In actual application, the user can adjust and control the illumination mode and brightness of the illumination device by operating the key control unit or the operation panel. For example, the MCU related circuit further includes a switch key S3 and a switch key S4. The user can control the illumination device to enter the illumination mode by operating the switch key S3, and control the illumination device to enter the image projection mode by operating the switch key S4. It should be noted that the target illumination mode corresponding to the switch key S3 and the switch key S4 can also be customized according to the needs of the actual application scene.

[0063] As shown in Figure 2 , the MCU control chip further includes a plurality of PWM output pins, for example, PWM1, PWM2, PWM3, PWM4 and PWM5, each of which can output different PWM signals to drive the plurality of light emitting units in the LED module 130 to display different brightness. The CLK pin of the MCU control chip can provide a 8MHz PWM signal as the system clock of the internal circuit of U1. It should be noted that the specific driving frequency of the PWM signal can be determined according to the illumination brightness of the illumination device set by the user in the actual application scene. It should be noted that the user can adjust the brightness through the operation interface, operation key or operation knob set on the illumination device.

[0064] In a feasible embodiment, when the lighting device is in the image projection mode, the lighting device can also display the image data currently projected by the lighting device on the operation interface, and the user can select the target light emitting unit through the operation interface and adjust the light emitting brightness of the target light emitting unit through the LED driving module 120, so as to realize more flexible and more accurate light control and realize higher-precision image projection.

[0065] In summary, the embodiment provides a lighting control system, which can realize the lighting function and the image projection function simultaneously under the condition of a single light source by adjusting the driving logic of the LED driving module 120 through the control module 140. The lighting control system provided by the embodiment can also realize the brightness adjustment of a single LED light emitting unit, which greatly enriches the functions of the lighting device.

[0066] In one embodiment, as shown in Figure 3 the LED driving module 120 includes a constant current driving module 121 and an image dimming module 122 connected in parallel.

[0067] In the embodiment, the control module 140 is connected to the constant current driving module 121 and the image dimming module 122. The control module 140 can send a PWM control signal to the constant current driving module 121 to drive the light emitting units in the LED module 130 to emit light according to the preset driving current. The control module 140 can send image data and a control signal to the image dimming module 122 to adjust the series connection of the light emitting units in the LED module 130, so as to supply power to the target light emitting units and not supply power to the non-target light emitting units.

[0068] In actual application, the image dimming module 122 is used to cascade control a plurality of transistor switches according to the control signal, so as to make the target light emitting units in the current conduction state. The image dimming module 122 includes a plurality of transistor switches, the number of the transistor switches is less than or equal to the number of the light emitting units in the LED module 130, and the transistor switches are connected in parallel with the light emitting units.

[0069] In the embodiment, the specific circuit of the image dimming module 122 is shown in Figure 4 . Among them, U1 is an LED matrix control chip, which can be composed of four independent three-serial bypass switches. It should be noted that the LED matrix control chip includes a plurality of MOS tubes, each MOS tube corresponds to a transistor switch, and the switch state of the transistor switch corresponds to controlling whether a light emitting unit is in the current conduction state. Capacitors C1, C2, C3 and C4 provide stable output for the internal charge pump of U1.

[0070] In actual application, the MCU control chip, i.e. chip U7, and the LED matrix control chip, i.e. chip U1, communicate data through a universal asynchronous receiver / transmitter (UART), and the address of U1 can be set through ADDR0, ADDR1 and ADDR2, thereby cascading control of multiple transistor switches in the LED matrix control chip.

[0071] The light emitting units in the LED assembly in the embodiment are connected in series, and each light emitting unit is connected in parallel with a transistor switch in the LED matrix control chip. By setting a register value, the duty cycle of each MOS switch is adjusted to shunt the LEDs in each series loop, and independent control of the LED light emitting units of a single pixel point can be achieved.

[0072] The constant current driving module 121 is configured to adjust a power supply signal to obtain a target output current according to a control signal, and drive target light emitting units to emit light according to the target output current.

[0073] In the embodiment, the constant current driving module 121 is configured to output a stable target output current according to a PWM signal sent by the control module 140, and drive all target light emitting units to emit light by the target output current after the target light emitting units in the image dimming unit control LED module 130 are connected in series.

[0074] In actual application, the output frequency of the PWM signal sent by the control module 140 can be adjusted to adjust the target output current, and thereby adjust the luminance of the target light emitting units.

[0075] In one embodiment, the power supply module 110 includes a power supply boost module, one end of the power supply boost module is connected to a power supply, and the other end of the power supply boost module is connected to the LED driving module 120 and the control module 140 respectively.

[0076] The constant current driving module 121 includes a step-down driving chip, one end of the step-down driving chip is connected to the power supply boost module, and the other end of the step-down driving chip is connected to the LED module 130.

[0077] In the embodiment, as shown in FIG. 1, the LED module 130 includes a plurality of light emitting units, and each light emitting unit includes a plurality of LEDs connected in series. Figure 5As shown, the power supply module 110 includes a boost chip to provide power input for the series-connected light emitting units in the LED module 130. The boost chip can be a synchronous BOOST boost chip U3, in which the synchronous BOOST boost has double MOS tubes integrated inside the boost chip U3. The power input end BAT+ of the power supply module 110 can be connected to a battery pack or directly connected to a constant current source to receive a power signal. The output voltage of the power supply module 110 can be set by the resistance values of the voltage dividing resistors R51 and R52. It should be noted that in actual application scenarios, if the constant current source can directly provide a voltage signal that meets the output voltage requirement, the power supply module 110 can not be provided with a boost chip. The circuit combination of the power supply module 110 can be set according to the needs of the actual application scenario.

[0078] As shown in Figure 6 , the constant current drive module 121 can be a synchronous BUCK step-down drive chip U4, which has double MOS tubes integrated inside the synchronous BUCK step-down drive chip. The resistance value of the resistor R16 is used to limit the maximum drive current provided by the constant current drive module 121 to the LED module 130. The synchronous BUCK step-down drive chip U4 is connected to the MCU control chip of the control module 140 through the resistor R12. The MCU control chip outputs a PWM square wave through the resistor R12 to control the BUCK step-down drive chip U4, so as to adjust the output current of the BUCK step-down drive chip U4.

[0079] By setting the boost chip and the step-down drive chip, the embodiment can achieve constant current drive for the series-connected light emitting units in the LED module 130, so as to guarantee the light emitting efficiency and stability of the LED module 130.

[0080] In one of the embodiments, the image dimming module 122 further includes a temperature monitoring unit for measuring the PCB temperature of the image dimming module 122.

[0081] The control module 140 is used to adjust the output power according to the PCB temperature, so as to control the target output current of the constant current drive module 121 to belong to a preset current range.

[0082] In the embodiment, as shown in Figure 2 and Figure 4 , the temperature monitoring unit can be an NTC thermistor R5. The PCB temperature of the image dimming module 122 is monitored in real time by the NTC thermistor R5, the MCU reads the temperature signal forwarded by the image dimming module 122 through the UART interface, and adjusts the output current of the constant current drive module 121 according to the PCB temperature of the image dimming module 122, so as to avoid the influence of the high PCB temperature value on the safety of the lighting device.

[0083] In actual application process, when the MCU control chip detects that the PCB board temperature is greater than or equal to a preset temperature threshold, the target output current of the constant current driving module 121 is controlled to decrease, so that the target output current of the constant current driving module 121 is reduced to a preset current range. The preset temperature threshold is a PCB board high temperature threshold. The preset current range is an output current safety numerical range. The actual values of the preset temperature threshold and the preset current range can be adaptively configured according to the needs of actual application scenarios.

[0084] In the embodiment, the control module 140 adjusts the output power, which means adjusting the duty cycle of the PWM signal of the constant current driving module 121.

[0085] In a feasible embodiment, the MCU control chip of the control module 140 can also monitor the remaining power of the battery pack, and when it is monitored that the remaining power of the battery pack is less than a preset power threshold, the output power is adjusted to control the target output current of the constant current driving module 121 to belong to the preset current range. In this embodiment, the remaining power of the battery pack is monitored by the control module 140, and the output current is controlled, which can effectively avoid that the low power affects the safety and service life of the lighting control system.

[0086] In one of the embodiments, the target lighting mode includes a light illumination mode and an image projection mode.

[0087] When the target lighting mode is the light illumination mode, the control module 140 controls the lens module 150 to be at the first focal length position according to the target lighting parameters, and controls the LED driving module 120 to drive all the light emitting units in the LED module 130 to emit light according to the target brightness.

[0088] When the target lighting mode is the image projection mode, the control module 140 controls the lens module 150 to be at the second focal length position according to the target lighting parameters, and controls the LED driving module 120 to drive part of the light emitting units in the LED module 130 to emit light according to the target brightness.

[0089] In the embodiment, the lens module 150 includes at least one lens whose focal length position can be adjusted. In actual application process, the lens module 150 includes at least one light collecting lens and one collimating lens, which are used to collect and collimate the light signals emitted by the LED module 130, so as to ensure the light emitting efficiency of the LED module 130. It should be noted that the light collecting lens and the collimating lens can be a single lens or a combination of multiple lenses. The type of the lens can be a convex lens or a concave lens according to the function. The material of the lens can be glass or silica gel lamp temperature-resistant material. The specific combination type and material type of the lens are not limited in the embodiment.

[0090] In the embodiment, the first focal length position and the second focal length position are different. Actual values of the first focal length position and the second focal length position can be determined according to actual dimensions of the LED module 130, which are not limited herein.

[0091] In a more detailed embodiment, as shown in Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 , a circuit composed of actual circuit diagrams is used to explain the working principle of the lighting control system provided by the embodiment.

[0092] After the lighting control system provided by the embodiment is normally connected to a battery, the synchronous BOOST chip U3 boosts the electrical signal delivered by the battery to 5V and outputs the voltage to the MCU control chip U7 to supply power to the MCU control chip U7. When the MCU control chip U7 detects an external key input signal, when the key is pressed:

[0093] If the target lighting mode is the light illumination mode at this time, the lighting control system needs to realize the lighting function, the MCU control chip U7 sends an enable signal to control the synchronous BOOST chip U3 to boost the output voltage to a set voltage, and then the MCU control chip U7 outputs a PWM signal to control the BUCK step-down driving chip U4 to drive the matrix LED to output constant current. After the key is pressed again, the MCU control chip U7 outputs different PWM duty cycles to change the luminance of the matrix LED.

[0094] If the target lighting mode is the image projection mode at this time, the lighting control system needs to perform the image display function, the MCU control chip U7 sends an enable signal to control the synchronous BOOST chip U3 to boost the output voltage to a set voltage, and then performs power-on reset on the LED matrix control chip U1. The MCU control chip U7 initializes and configures the LED matrix control chip U1 through UART communication. Then, the MCU control chip U7 outputs image display data to the LED matrix control chip U1, and outputs a PWM signal to start the BUCK step-down driving chip U4 to drive constant current, and the matrix LED starts to display images. As shown in Figure 7 , the LED module 130 can be a matrix LED composed of 3 5 light emitting units. When the user continuously presses the key, the MCU control chip U7 continuously outputs multiple groups of image display data to the LED matrix control chip U1 to realize image switching or continuous change of the matrix LED.

[0095] In conclusion, the lighting control system provided in the embodiment combines the functions of lighting and image display, and switches through MCU software control, thereby solving the problem of complex hardware circuit design in the prior art. The lighting display has multi-level brightness adjustment, the LED matrix control chip U1 has PWM phase shift function, and in the fast image display process, the current fluctuation of the input power supply can be effectively reduced, and the stability of the circuit is improved. The LED module adopts a series driving mode, and the power boost module and the step-down constant current module both use a synchronous mode. When used for lighting display, the driving efficiency is high. When used for image display, the internal MOS bypass switch of the LED matrix control chip U1 independently shunts the series LED, the internal MOS equivalent resistance is low, and the efficiency loss is small. The MCU control chip U7 generates multiple PWM to control the MOS switch inside the LED matrix control chip U1, and only UART communication is needed between the chips, thereby reducing the IO resource occupation of the MCU. That is, the lighting control system provided in the embodiment not only realizes the functions of light illumination and image projection under the condition of a single lighting source, but also effectively reduces the energy consumption of the lighting device, improves the light regulation efficiency of the lighting device, reduces the complexity of the circuit, and reduces the manufacturing cost of the lighting device.

[0096] In one embodiment, as shown in Figure 8 , a lighting control method is provided, which is applied to the control module of the lighting control system in Figure 1 for illustration, including the following steps:

[0097] S801, a target lighting mode is obtained.

[0098] S802, a control signal is generated according to the target lighting mode, wherein the control signal includes a target lighting parameter.

[0099] S803, the control signal is sent to the LED driving module to control the LED driving module to drive the target light emitting unit of the LED module to emit light according to the target lighting parameter, and control the lens module to move to the target focal length position according to the target lighting parameter.

[0100] In one embodiment, the target lighting mode includes a light illumination mode and an image projection mode.

[0101] In the case where the target lighting mode is the light illumination mode, the method further includes:

[0102] controlling the lens module to be at the first focal length position according to the target lighting parameter, and controlling the LED driving module to drive all light emitting units in the LED module to emit light according to the target brightness;

[0103] In the case where the target lighting mode is the image lens mode, the method further includes:

[0104] controlling the lens module to be in the second focal length position according to the target illumination parameter, and controlling the LED driving module to drive part of the light emitting units in the LED module to emit light according to the target brightness.

[0105] It should be noted that the specific implementation of the illumination control method provided in the embodiment can refer to the specific implementation of the system embodiment described above, which will not be described here.

[0106] In summary, the embodiment further provides an illumination control method. By controlling the module to adjust the driving logic of the LED driving module, the illumination function and the image projection function can be realized simultaneously under the condition of a single light source. The illumination control system provided in the embodiment can also realize the brightness adjustment of a single LED light emitting unit, which greatly enriches the function of the illumination device.

[0107] It should be understood that, although each step in the flowchart involved in each embodiment described above is displayed in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise stated herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in each embodiment described above can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0108] In one embodiment, an illumination device, which can be a terminal, is provided. The internal structure diagram of the terminal can be as shown in FIG. 1. Figure 9The lighting device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. Among them, the processor, the memory and the input / output interface are connected through the system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. Among them, the processor of the lighting device is used to provide computing and control capability. The memory of the lighting device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the lighting device is used to exchange information between the processor and external devices. The communication interface of the lighting device is used to communicate with external terminals in a wired or wireless manner. The wireless manner can be realized through WIFI, mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by the processor to realize a lighting control method. The display unit of the lighting device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the lighting device can be a touch layer overlaid on the display screen, or a key, trackball or touchpad arranged on the housing of the lighting device, or an external keyboard, touchpad or mouse, etc.

[0109] Those skilled in the art can understand that, Figure 9 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the lighting device to which the scheme of the present application is applied. The specific lighting device can include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0110] In one embodiment, a lighting device is provided, including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the following steps:

[0111] Obtaining a target lighting mode;

[0112] Generating a control signal according to the target lighting mode, wherein the control signal includes a target lighting parameter;

[0113] Sending the control signal to the LED driving module to control the LED driving module to drive the target light emitting unit of the LED module to emit light according to the target lighting parameter, and control the lens module to move to a target focal length position according to the target lighting parameter.

[0114] In one embodiment, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by a processor to implement the following steps:

[0115] Obtaining a target lighting mode;

[0116] generating a control signal according to the target illumination mode, wherein the control signal comprises target illumination parameters;

[0117] sending the control signal to the LED driving module to control the LED driving module to drive the target light emitting unit of the LED module to emit light according to the target illumination parameters, and control the lens module to move to a target focal length position according to the target illumination parameters.

[0118] In one embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the following steps:

[0119] obtaining a target illumination mode;

[0120] generating a control signal according to the target illumination mode, wherein the control signal comprises target illumination parameters;

[0121] sending the control signal to the LED driving module to control the LED driving module to drive the target light emitting unit of the LED module to emit light according to the target illumination parameters, and control the lens module to move to a target focal length position according to the target illumination parameters.

[0122] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0123] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered as the scope of the present application.

[0124] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A lighting control system, characterized by, The application relates to a lighting device, which comprises a power supply module, an LED driving module, an LED module, a control module and a lens module. The power supply module is connected with the LED driving module and the control module respectively, and is used for supplying power to the LED driving module and the control module. The LED driving module is connected with the control module and the LED module respectively, and is used for driving target light-emitting units of the LED module in a constant current mode according to a control signal of the control module. The control module generates the control signal according to a target illumination mode, wherein the control signal comprises target illumination parameters; the control signal is sent to the LED driving module to control the LED driving module to drive the target light-emitting units of the LED module to emit light according to the target illumination parameters, and the lens module is controlled to move to a target focal length position according to the target illumination parameters. The LED driving module comprises a constant current driving module and an image dimming module connected in parallel; the control module is connected with the constant current driving module and the image dimming module respectively. The image dimming module comprises a plurality of transistor switches, the number of the transistor switches is less than or equal to the number of light-emitting units in the LED module, and the transistor switches are connected in parallel with the light-emitting units. The image dimming module is used for controlling the plurality of transistor switches in a cascade mode according to the control signal, so that the target light-emitting units are in a current conduction state. The constant current driving module is used for adjusting a power supply signal to obtain a target output current, and driving the target light-emitting units to emit light according to the target output current. The target illumination mode comprises a light illumination mode and an image projection mode. When the target illumination mode is the light illumination mode, the control module controls the lens module to be in a first focal length position according to target illumination parameters, and controls the LED driving module to drive all the light-emitting units in the LED module to emit light according to target brightness. When the target illumination mode is the image projection mode, the control module controls the lens module to be in a second focal length position according to target illumination parameters, and controls the LED driving module to drive part of the light-emitting units in the LED module to emit light according to target brightness, wherein the first focal length position and the second focal length position are different positions. The control module further comprises a key control unit; when the target illumination mode is the image projection mode, if the key control unit detects a continuous external key input signal, the control module outputs a plurality of groups of image display data to the image dimming module according to the external key input signal, so that the image dimming module controls the plurality of transistor switches in a cascade mode according to control signals corresponding to the different image display data, so that the target light-emitting units are in a current conduction state. The image dimming module further comprises a temperature monitoring unit, and the temperature monitoring unit is used for measuring the temperature of a PCB board of the image dimming module. ​ The control module is configured to adjust output power according to the PCB temperature to control the target output current of the constant current driving module to belong to a preset current range.

2. The system of claim 1, wherein, The power supply module comprises a power supply boost module, one end of the power supply boost module is connected with a power supply, and the other end of the power supply boost module is connected with the LED driving module and the control module respectively. The constant current driving module comprises a buck driving chip, one end of the buck driving chip is connected with the power supply boost module, and the other end of the buck driving chip is connected with the LED module.

3. The system of claim 1, wherein, The LED module is a matrix LED or a Micro LED. The LED module comprises a plurality of light emitting units, and each light emitting unit is connected in series.

4. The system of claim 1, wherein, The lens module comprises a light collecting lens and a collimating lens, wherein at least one lens of the light collecting lens and the collimating lens is a movable lens. The control module controls the light collecting lens and / or the collimating lens to move to a target focal length position according to the target illumination parameter.

5. A lighting control method, characterized by, The control module applied to the illumination control system of any one of claims 1-4 comprises: obtaining a target illumination mode; generating a control signal according to the target illumination mode, wherein the control signal comprises a target illumination parameter; sending the control signal to the LED driving module to control the LED driving module to drive the target light emitting unit of the LED module to emit light according to the target illumination parameter, and control the lens module to move to a target focal length position according to the target illumination parameter; the target illumination mode comprises a light illumination mode and an image projection mode; in the case that the target illumination mode is the light illumination mode, the method further comprises: controlling the lens module to be at a first focal length position according to the target illumination parameter, and controlling the LED driving module to drive all light emitting units in the LED module to emit light according to the target brightness; in the case that the target illumination mode is the image projection mode, the method further comprises: controlling the lens module to be at a second focal length position according to the target illumination parameter, and controlling the LED driving module to drive part of the light emitting units in the LED module to emit light according to the target brightness.

6. An illumination device, characterized by The illumination control system of any one of claims 1-4.

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