Illumination control system and method and illumination equipment

Abstract

The invention relates to an illumination control system and method and illumination equipment. The illumination control system comprises a power supply module, an LED driving module, an LED module, a control module and a lens module, the LED driving module is respectively connected with the control module and the LED module, and the LED driving module is used for driving a target light-emitting unit of the LED module in a constant-current manner according to a control signal of the control module; the control module generates a control signal according to the target lighting mode, and the control signal comprises a target lighting parameter; and sending a control signal to the LED driving module to control the LED driving module to drive a target light-emitting unit of the LED module to emit light according to the target illumination parameter, and controlling the lens module to move to a target focal length position according to the target illumination parameter. According to the illumination control system provided by the invention, the LED driving module can be controlled to drive the specified light-emitting unit, and the lens module is controlled to move, so that the illumination equipment can realize an illumination function and an image display function at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of lighting equipment, and in particular to a lighting control system, method and lighting equipment. Background Art

[0002] The existing lighting products generally have single-module light sources or multiple modules connected in series and parallel. They do not have the function of adjusting the brightness of individual LEDs and have a single function. Existing lighting products can usually only adjust the brightness of all LEDs uniformly, and cannot be used for image changes. They generally only have lighting functions and cannot achieve the dual functions of lighting and image projection. Summary of the invention

[0003] Based on this, it is necessary to provide a lighting control system, method and lighting equipment that can realize lighting function and image projection function and can adjust the brightness of independent LEDs in order to solve the above technical problems.

[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 the power supply module 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 the LED driving module is used to drive the target light-emitting unit of the LED module with a 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 includes the target lighting parameters; sends 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 parameters, and controls 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 includes 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 includes 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 perform cascade control on a plurality of transistor switches according to the control signal so as to put the target light-emitting unit in a current-conducting state;

[0011] The constant current driving 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 the power boost module is connected to the power supply, and the other end of the power boost module is respectively connected to the LED driving module and the control module;

[0013] The constant current driving module comprises a buck driving chip, one end of the buck driving chip is connected to the power boost module, and the other end of the buck driving chip 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 a plurality of light-emitting units, and each of the light-emitting units is connected in series.

[0016] In one of the embodiments, the image dimming module further includes a temperature monitoring unit, and the temperature monitoring unit is used to measure the PCB board 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 to control the target output current of the constant current drive module to fall 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 a target focal length position according to the target illumination parameter.

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

[0021] When the target lighting mode is a light lighting mode, the control module controls the lens module to be at a 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] When the target illumination mode is the image lens mode, the control module controls the lens module to be at the second focal length position according to the target illumination parameters, and controls the LED driving module to drive some 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, which is applied to the control module of the lighting control system described in the first aspect, comprising:

[0024] Get the target lighting mode;

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

[0026] 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.

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

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

[0029] Controlling the lens module to be at a first focal length position according to the target lighting 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 the case where the target illumination mode is an image lens mode, the method further comprises:

[0031] The lens module is controlled to be at a second focal length position according to target lighting parameters, and the LED driving module is controlled to drive some light-emitting units in the LED module to emit light according to target brightness.

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

[0033] In summary, the present application proposes a lighting control system, method and lighting equipment, including: a power supply module, an LED driving module, an LED module, a control module and a lens module; the LED driving module is respectively connected to the control module and the LED module, and the LED driving module is used to drive the target light-emitting unit of the LED module with a constant current according to the control signal of the control module; the control module generates a control signal according to the target lighting mode, wherein the control signal includes the target lighting parameter; a 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 to control the lens module to move to the target focal length position according to the target lighting parameter. The lighting control system provided in the present application can realize the lighting function and the image display function of the lighting equipment at the same time by controlling the LED driving module to drive the specified light-emitting unit and controlling the movement of the lens module. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0035] Figure 2 Schematic diagram of a circuit of an MCU control unit in one embodiment;

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

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

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

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

[0040] Figure 7 A schematic diagram of an application scenario of an image projection function in an embodiment;

[0041] Figure 8 is a schematic flow chart of a lighting control method in one embodiment;

[0042] Fig. 9 FIG. 4 is a diagram showing the internal structure of a lighting device in one embodiment.

[0043] Summary of reference numerals:

[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 purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] In the related art, lighting equipment 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 in existing lighting equipment is usually a single lighting module or multiple lighting modules in series and parallel, and does not have the function of independently adjusting the brightness of a single LED. In actual application scenarios, such as stage performances, light shows or outdoor lighting, lighting equipment can simultaneously realize lighting functions, image projection functions and single LED brightness adjustment functions, which can greatly enrich the scope of use and usage of lighting equipment, and increase the applicability and interest of lighting equipment. And when the lighting equipment can realize independent adjustment of a single LED, the lighting equipment can display the projected image more clearly when performing the image projection function, thereby improving the lighting effect of the lighting equipment.

[0047] like Figure 1 As shown, the lighting control system provided in the embodiment of the present application includes: 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 this 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 use a voltage stabilizer to directly supply power to the LED driving module 120 and the control module 140, or use a battery pack in conjunction with a voltage regulating circuit to supply power to the LED driving module 120 and the control module 140. It should be noted that the electrical signal provided by the power supply module 110 and the specific voltage regulating function of the voltage regulating circuit can be adaptively set based on the LED driving module 120 and the control module 140 in actual application scenarios, and are not limited here.

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

[0050] In this embodiment, the LED driving module 120 is connected to the control module 140, and is used to receive the control signal sent by the control module 140. The control module 140 generates the control signal according to the lighting function performed by the current lighting device, that is, generates the control signal according to the target lighting mode. The target lighting mode includes a light lighting mode and an image projection mode. In the light lighting mode, the control module 140 sends a 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 a 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 drive refers to maintaining a constant current output in the circuit, and a constant output current can be maintained regardless of the resistance change of the driven device or the fluctuation of the power supply voltage. The LED driving module 120 in this embodiment can ensure that the LED light-emitting unit obtains a stable current by driving the target light-emitting unit of the LED module 130 with a constant current, thereby maintaining the stability of the light-emitting brightness and performance. And because the LED driving module 120 can effectively limit the magnitude of the current, it 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 used to drive the target light-emitting unit of the LED module 130 with a constant current, so that the target light-emitting unit emits light. It should be noted that the LED module 130 in this embodiment can adopt a matrix LED or a Micro LED. In this embodiment, the LED module 130 includes a plurality of light-emitting units, and each light-emitting unit is connected in series. The LED driving module 120 includes a bypass switch connected in parallel with each light-emitting unit. When the control module 140 controls the bypass switch in the LED driving module 120 to be turned on, the corresponding light-emitting unit can be short-circuited, and the light-emitting unit is not lit. When the control module 140 controls the bypass switch in the LED driving module 120 to be turned off, the corresponding light-emitting unit can be powered on, and the light-emitting unit is lit and emits light.

[0053] It should be noted that the LED driving module 120 can control the number of light-emitting units in the LED module 130 in series 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. This embodiment uses a matrix LED or Micro LED as the LED module 130, which can realize the light-emitting control for a single pixel point, thereby realizing the dual functions of lighting and image projection under a single light source. It can also realize cascade control of multiple light-emitting units, thereby locating the target light-emitting unit more quickly and accurately when realizing the image projection function.

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

[0055] The control module 140 generates a control signal according to the target lighting mode, wherein the control signal includes the target lighting parameters; sends a 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 lighting parameters, and controls the lens module 150 to move to the target focal length position according to the target lighting parameters.

[0056] In this embodiment, the control module 140 includes a microcontroller unit (MCU) and MCU related circuits. For example, the MCU control circuit of the control module 140 can be as follows: Figure 2 As shown, the chip U7 is an MCU control chip. In actual application, the control module 140 also includes a memory, such as a register, and the memory stores target lighting parameters corresponding to the target lighting mode. It should be noted that the specific type of the memory can select a suitable device according to the needs of the actual application scenario. In this embodiment, the memory also stores image data for image or animation display. When the target lighting mode is the image projection mode, the control module 140 will send the image data to the LED driving module 120 together with the control signal.

[0057] In this embodiment, the target lighting parameters may include parameters corresponding to the target lighting mode, such as the light emitting unit position (pixel position), driving power, light emitting brightness, light emitting time, and focal position.

[0058] After the control module 140 sends a control signal to the LED driving module 120, the LED driving module 120 will drive the designated target light-emitting unit to emit light according to the set brightness according to the target lighting 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 lighting parameter to the lens module 150, so that the lens module 150 moves to the set focal length position to realize the lighting function or image projection function.

[0059] In this embodiment, the lens module 150 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. The control module 140 controls the light collecting lens and / or the collimating lens to move to a target focal length position according to target illumination parameters.

[0060] It should be noted that in this embodiment, the light-collecting lens is used to improve the light-emitting efficiency of the light-emitting unit in the LED module 130. The light-collecting lens is arranged near the light source, and a high-temperature resistant lens such as a glass lens or a silicone lens can be used. A collimating lens is an optical lens that can convert the divergent light from the light source into a beam of parallel light beams that coincide with the main optical axis. The collimating lens is used to collimate the light signal to ensure that the light signal is emitted in the set direction.

[0061] In some feasible embodiments, the control module 140 further includes a lighting mode display unit and a button control unit.

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

[0063] like Figure 2 As shown, the MCU control chip also includes multiple PWM output pins, such as PWM1, PWM2, PWM3, PWM4 and PWM5, each of which can output different PWM signals to drive the multiple light-emitting units in the LED module 130 to display at different brightness. The CLK pin of the MCU control chip can provide an 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 lighting brightness of the lighting device set by the user in the actual application scenario. It should be noted that the user can adjust the brightness through the operation interface, operation buttons or operation knobs set on the lighting 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. The user can select the corresponding target light-emitting unit through the operation interface and adjust the light brightness of the target light-emitting unit through the LED driving module 120 to achieve more flexible and more precise lighting control and achieve higher-precision image projection.

[0065] In summary, the present 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 present embodiment can also realize the brightness adjustment of a single LED light-emitting unit, which greatly enriches the functions of the lighting equipment.

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

[0067] In this embodiment, the control module 140 is respectively 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 so that the constant current driving module 121 drives the light-emitting units in the LED module 130 to emit light according to a preset driving current. The control module 140 can send image data and control signals to the image dimming module 122 so that the image dimming module 122 adjusts the series connection of the light-emitting units in the LED module 130 to power the target light-emitting units and not power the non-target light-emitting units.

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

[0069] In this embodiment, the specific circuit of the image dimming module 122 is as follows: Figure 4 As shown. Among them, U1 is an LED matrix control chip, and the LED matrix control chip can be composed of four independent three-series bypass switches. It should be known that the LED matrix control chip includes multiple MOS tubes, each MOS tube corresponds to a transistor switch, and the switching state of the transistor switch corresponds to controlling whether a light-emitting unit is in a 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, communicates with the LED matrix control chip, i.e., chip U1, through a universal asynchronous receiver / transmitter (UART). 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 this embodiment are all connected in series, and each light-emitting unit is connected in parallel with the transistor switch in the LED matrix control chip. By setting the register value and adjusting the duty cycle of each MOS switch to shunt the LEDs in each series circuit, independent control of the LED light-emitting unit at a single pixel can be achieved.

[0072] The constant current driving module 121 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.

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

[0074] In actual application, the target output current can be adjusted by adjusting the output frequency of the PWM signal sent by the control module 140, thereby adjusting the light brightness of the target light-emitting unit.

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

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

[0077] In this embodiment, if Figure 5As shown, the power supply module 110 includes a boost chip to provide power input for the light-emitting units connected in series in the LED module 130. The boost chip can be a synchronous BOOST boost chip U3, wherein the synchronous BOOST boost integrates dual MOS tubes inside the boost chip U3. The power input terminal 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 divider resistor R51 and the voltage divider resistor 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 requirements, the power supply module 110 may 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] like Figure 6 As shown, the constant current driving module 121 can be a synchronous BUCK buck driving chip U4, and a dual MOS tube is integrated inside the synchronous BUCK buck driving chip. The resistance value of the resistor R16 is used to limit the maximum driving current provided by the constant current driving module 121 to the LED module 130. Among them, the synchronous BUCK buck driving 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 that flows through the resistor R12 to control the BUCK buck driving chip U4 to adjust the output current of the BUCK buck driving chip U4.

[0079] In this embodiment, by providing a boost chip and a buck driver chip, constant current driving can be achieved for the light-emitting units connected in series in the LED module 130 , so as to ensure the light-emitting efficiency and light-emitting stability of the LED module 130 .

[0080] In one embodiment, the image dimming module 122 further includes a temperature monitoring unit, and the temperature monitoring unit is used to measure the PCB board temperature of the image dimming module 122 .

[0081] The control module 140 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 driving module 121 to fall within a preset current range.

[0082] In this embodiment, if Figure 2 and Figure 4 As shown, the temperature monitoring unit may be an NTC thermistor R5. The PCB board temperature of the image dimming module 122 is monitored in real time through 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 driving module 121 according to the PCB board temperature of the image dimming module 122, so as to avoid the safety of the lighting equipment being affected by an excessively high PCB board temperature value.

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

[0084] In this embodiment, the control module 140 adjusts the output power, which refers to adjusting the duty cycle of the PWM signal of the output value 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 detected that the remaining power of the battery pack is less than a preset power threshold, adjust the output power to control the target output current of the constant current drive module 121 to fall within a preset current range. In this embodiment, the control module 140 monitors the remaining power of the battery pack and controls the output current, which can effectively prevent the safety and service life of the lighting control system from being affected by low power.

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

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

[0089] In this embodiment, the lens module 150 includes at least one lens that can adjust the focal position. In actual application, the lens module 150 includes at least one light-collecting lens and a collimating lens, which are used to collect and collimate the light signal emitted by the LED module 130 to ensure the light output 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 lens can select a corresponding convex lens or concave lens according to the function. The material of the lens can be selected from glass or silicone lamp heat-resistant material. This embodiment does not limit the specific combination type and material type of the lens.

[0090] In this embodiment, the first focal length position and the second focal length position are different. The actual values ​​of the first focal length position and the second focal length position can be determined according to the actual size of the LED module 130, which is not limited here.

[0091] In a more detailed embodiment, Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the working principle of the lighting control system provided in this embodiment is explained by a circuit composed of an actual circuit diagram.

[0092] The lighting control system provided in this embodiment is normally connected to the battery. The synchronous BOOST chip U3 boosts the electrical signal transmitted by the battery to 5V, and then outputs the voltage to the MCU control chip U7 to power 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 lighting mode, the lighting control system needs to realize the lighting function, and the MCU control chip U7 sends an enable signal to control the synchronous BOOST boost chip U3 to boost the output setting voltage, and then the MCU control chip U7 outputs a PWM signal to control the BUCK buck driver chip U4 to drive the matrix LED output with constant current. After pressing the button again, the MCU control chip U7 outputs a different PWM duty cycle to change the brightness 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, and the MCU control chip U7 sends an enable signal to control the synchronous BOOST boost chip U3 to boost the output set voltage, and then power on and reset 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 the image display data to the LED matrix control chip U1, and then outputs a PWM signal to start the constant current drive of the BUCK buck driver chip U4, and the matrix LED begins to display the image. Figure 7 As shown, the LED module 130 can be a 3 The matrix LED consists of 5 light-emitting units. When the user presses the button continuously, the MCU control chip U7 will continuously output multiple sets of image display data to the LED matrix control chip U1 to achieve matrix LED image switching or continuous change.

[0095] In summary, the lighting control system provided in this embodiment integrates lighting and image display functions, switches through MCU software control, and solves the shortcomings of complex hardware circuit design in the prior art. The lighting display has multi-level brightness adjustment, and the LED matrix control chip U1 has a PWM phase shift function. In the process of fast image display, it can effectively reduce the current fluctuation of the input power supply and improve the stability of the circuit. The LED module adopts a series drive mode, and the power boost module and the buck constant current module both use a synchronous mode. When used for lighting display, the driving efficiency is high. When used for image display, the series LED is independently shunted through the internal MOS bypass switch of the LED matrix control chip U1, and the internal MOS equivalent resistance is low, and the efficiency loss is small. The MCU control chip U7 generates multiple PWMs to control the MOS switches inside the LED matrix control chip U1. The chips only need to communicate through UART to reduce the IO resource occupation of the MCU. That is, the lighting control system provided in this embodiment not only realizes the lighting function and image projection function under the hardware conditions of a single lighting source, but also effectively reduces the energy consumption of lighting equipment, improves the lighting control efficiency of lighting equipment, reduces the complexity of the circuit, and reduces the production cost of lighting equipment.

[0096] In one embodiment, Figure 8 As shown, a lighting control method is provided, which is applied to Figure 1 The control module of the lighting control system in FIG. 1 is taken as an example to illustrate the method, which includes the following steps:

[0097] S801, obtaining a target lighting mode.

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

[0099] S803, sending a 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 parameters, and controlling the lens module to move to the target focal length position according to the target lighting parameters.

[0100] In one of the embodiments, the target illumination mode includes a light illumination mode and an image projection mode;

[0101] When the target lighting mode is a light lighting mode, the method further includes:

[0102] Controlling the lens module to be at a first focal length position according to the target lighting 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;

[0103] In case the target illumination mode is an image lens mode, the method further comprises:

[0104] The lens module is controlled to be at a second focal length position according to the target lighting parameters, and the LED driving module is controlled to drive some 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 lighting control method provided in this embodiment can refer to the specific implementation of the aforementioned system embodiment, which will not be described in detail here.

[0106] To sum up, this embodiment also provides a lighting control method. By adjusting the driving logic of the LED driving module through the control module, the lighting function and the image projection function can be realized simultaneously under the condition of a single light source. The lighting control system provided in this embodiment can also realize the brightness adjustment of a single LED light-emitting unit, which greatly enriches the functions of the lighting equipment.

[0107] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0108] In one embodiment, a lighting device is provided. The lighting device may be a terminal, and its internal structure diagram may be as follows: Fig. 9As shown. The lighting device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the lighting device is used to provide computing and control capabilities. 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 operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the lighting device is used to exchange information between the processor and the external device. The communication interface of the lighting device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a lighting control method is realized. 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, and the input device of the lighting device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the lighting device housing, or an external keyboard, touchpad or mouse.

[0109] Those skilled in the art will understand that Fig. 9 The structure shown in the figure is merely a block diagram of a partial 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 may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0110] In one embodiment, a lighting device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0111] Get the target lighting mode;

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

[0113] A 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 to control the lens module to move to the target focal length position according to the target lighting parameters.

[0114] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0115] Get the target lighting mode;

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

[0117] A 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 to control the lens module to move to the target focal length position according to the target lighting 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] Get the target lighting mode;

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

[0121] A 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 to control the lens module to move to the target focal length position according to the target lighting 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, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this 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 memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access 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 and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0123] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0124] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A lighting control system, characterized in that: include: Power supply module, LED driver module, LED module, control module and lens module; The power supply module is connected to the LED driving module and the control module respectively, and the power supply module is used to supply power to the LED driving module and the control module; The LED driving module is connected to the control module and the LED module respectively, and the LED driving module is used to drive the target light-emitting unit of the LED module with a constant current according to the control signal of the control module; The control module generates the control signal according to the target lighting mode, wherein the control signal includes the 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 control the lens module to move to the target focal length position according to the target lighting parameter.

2. The system according to claim 1, characterized in that 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; The image dimming module includes 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 to perform cascade control on a plurality of transistor switches according to the control signal so as to put the target light-emitting unit in a current-conducting state; The constant current driving 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.

3. The system according to claim 2, characterized in that The power supply module includes a power boost module, one end of the power boost module is connected to the power supply, and the other end of the power boost module is respectively connected to the LED driving module and the control module; The constant current driving module comprises a buck driving chip, one end of the buck driving chip is connected to the power boost module, and the other end of the buck driving chip is connected to the LED module.

4. The system according to claim 2, characterized in that The LED module is a matrix LED or a Micro LED; The LED module includes a plurality of light-emitting units, and each of the light-emitting units is connected in series.

5. The system according to claim 2, characterized in that The image dimming module further includes a temperature monitoring unit, and the temperature monitoring unit is used to measure the PCB board temperature of the image dimming module; The control module is used to adjust the output power according to the temperature of the PCB board to control the target output current of the constant current drive module to fall within a preset current range.

6. The system according to claim 1, characterized in that The lens module comprises 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; 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.

7. The system according to any one of claims 1 to 6, characterized in that: The target illumination mode includes a light illumination mode and an image projection mode; When the target lighting mode is a light lighting mode, the control module controls the lens module to be at a 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; When the target illumination mode is the image lens mode, the control module controls the lens module to be at the second focal length position according to the target illumination parameters, and controls the LED driving module to drive some light-emitting units in the LED module to emit light according to the target brightness.

8. A lighting control method, characterized in that: A control module for a lighting control system according to any one of claims 1 to 7, comprising: Get the target lighting mode; generating a control signal according to the target lighting mode, wherein the control signal includes 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 parameters, and control the lens module to move to the target focal length position according to the target lighting parameters.

9. The method according to claim 8, characterized in that The target illumination mode includes a light illumination mode and an image projection mode; In the case where the target lighting mode is a light lighting mode, the method further includes: Controlling the lens module to be at a first focal length position according to the target lighting 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; In the case where the target illumination mode is an image lens mode, the method further comprises: The lens module is controlled to be at a second focal length position according to target lighting parameters, and the LED driving module is controlled to drive some light-emitting units in the LED module to emit light according to target brightness.

10. A lighting device, characterized in that: The lighting control system comprises the lighting control system according to any one of claims 1 to 7.

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