Illumination system and control method

Abstract

The invention provides an illumination system and a control method, and relates to the field of illumination, and the illumination system comprises a control module which is used for outputting a first lamp bead control signal; the temperature sensing element is used for acquiring a temperature sensing signal associated with the temperature of an area where the temperature sensing element is located; and the transcoder module is used for adjusting the first lamp bead control signal according to the temperature sensing signal and a pre-stored temperature state adjustment data set to obtain a second lamp bead control signal, so that the driving chip of the lamp bead unit controls the light emitting state of the light emitting chip according to the second lamp bead control signal. According to the application, the MCU does not need to process the lamp bead units of each lamp panel one by one, and temperature compensation is directly carried out on each lamp bead unit through the transcoder module, so that the temperature compensation period of the lamp bead units of the lamp panel of each part of the automobile is effectively shortened, and the efficiency is relatively high.

Description

Technical Field

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

[0002] Currently, in automotive ambient light control systems, the color control signals for the ambient lights can be adjusted based on the ambient temperature. For example, the color control signals may include a red (R), a green (R), a blue (B), and a white (W) control signal.

[0003] In the control system of automotive ambient light, the temperature is generally sensed by the temperature sensing element in the lamp bead and the temperature signal is transmitted to the microcontroller unit (MCU). The MCU will send a temperature compensation signal to the control chip of the lamp bead based on the stored compensation parameters for different temperatures, so that the ambient light can emit normally at the current temperature.

[0004] However, since ambient lights are generally installed in multiple parts of the car, the temperature of each part may be different. Each part generally sends back a temperature signal to the MCU, which processes it one by one and sends a temperature compensation signal. As a result, the MCU takes a long time to process the temperature compensation process for each part, and the efficiency is low.

[0005] Therefore, it is urgent to propose a new lighting system and control method to shorten the processing cycle of the MCU and improve energy efficiency. Summary of the Invention

[0006] The embodiment of the present application provides a lighting system and control method, which directly performs temperature compensation on the lamp bead units of each lamp board through a transcoder module, thereby effectively shortening the temperature compensation cycle of the lamp bead units of the lamp boards in each part of the car, and has high efficiency.

[0007] In a first aspect, an embodiment of the present application provides a lighting system, which includes: at least one lamp board, the lamp board is provided with a plurality of lamp bead units connected in series, the lamp bead units include a driver chip and at least one light-emitting chip, the driver chip is used to control the light-emitting state of the light-emitting chip; a main control board, the main control board is provided with a control module, the control module is used to output a first lamp bead control signal; at least one temperature sensing element, used to obtain a temperature sensing signal related to the temperature of the area where the temperature sensing element is located; and at least one transcoder module, electrically connected to the control module, the plurality of lamp bead units and the temperature sensing element, the transcoder module stores a temperature state adjustment data set, the transcoder module is used to obtain a temperature state adjustment value string from the temperature state adjustment data set according to the temperature sensing signal, and the transcoder module is used to obtain a second lamp bead control signal according to the temperature state adjustment value string and the first lamp bead control signal, wherein the driver chip of the lamp bead unit is used to control the light-emitting state of the light-emitting chip according to the second lamp bead control signal.

[0008] In combination with the first aspect, in a possible implementation of the first aspect, the transcoder module includes a master transcoder unit and a slave transcoder unit, the master transcoder unit is electrically connected to the control module, the master transcoder unit is used to transcode the first lamp bead control signal into a differential signal, the slave transcoder unit is electrically connected to the master transcoder unit, the temperature state adjustment data set is stored in the slave transcoder unit, the slave transcoder unit is used to transcode the differential signal into a third lamp bead control signal, the slave transcoder unit is used to obtain a temperature state adjustment value string from the temperature state adjustment data set according to the temperature sensing signal, and adjust the third lamp bead control signal according to the temperature state adjustment value string to obtain the second lamp bead control signal.

[0009] In combination with the first aspect, in a possible implementation of the first aspect, at least one light-emitting chip is a plurality of light-emitting chips that emit light of different colors from each other, the temperature state adjustment data set includes control signal adjustment ratios for each of the plurality of light-emitting chips corresponding to a plurality of different temperature sensing signals, and the temperature state adjustment value string includes control signal adjustment ratios for each of the plurality of light-emitting chips corresponding to the temperature sensing signals.

[0010] In combination with the first aspect, in a possible implementation of the first aspect, the master transcoder unit is provided on the main control board, the slave transcoder unit is provided on the lamp board, and the temperature sensing unit is provided on the lamp board, the slave transcoder unit or the lamp bead unit.

[0011] In combination with the first aspect, in a possible implementation of the first aspect, the at least one light board is divided into a plurality of light boards, and the plurality of light boards are independently electrically connected to the main control board.

[0012] In combination with the first aspect, in a possible implementation of the first aspect, the slave transcoder unit also stores a brightness compensation data set, the brightness compensation data set includes brightness compensation ratios corresponding to multiple lamp bead units, and the second lamp bead control signal also includes a result of adjusting the third lamp bead control signal from the transcoder unit according to the brightness compensation ratio.

[0013] In combination with the first aspect, in a possible implementation of the first aspect, the brightness compensation ratio is associated with the optical structure or setting position of the corresponding lamp bead unit.

[0014] In combination with the first aspect, in a possible implementation of the first aspect, the first lamp bead control signal includes a pulse width modulation signal or a current signal.

[0015] In a second aspect, an embodiment of the present application further provides a control method, the method comprising: The transcoder module receives a first lamp bead control signal sent by the control module and a temperature sensing signal sent by the temperature sensing element; a temperature state adjustment data set is stored in the transcoder module, and the transcoder module obtains a corresponding temperature state adjustment value string from the temperature state adjustment data set according to the temperature sensing signal; the transcoder module obtains a second lamp bead control signal according to the temperature state adjustment value string and the first lamp bead control signal; and the driver chip of the lamp bead unit controls the light-emitting state of the light-emitting chip according to the second lamp bead control signal.

[0016] In a third aspect, an embodiment of the present application further provides a control method, the method comprising: The transcoder module receives the temperature feedback signal sent by the control module and sends it to the driver chip, so that the driver chip enters the feedback temperature mode; the transcoder module receives the compensation signal sent by the control module and sends a clock signal to the driver chip, so that the driver chip returns the temperature sensing signal sent by the corresponding temperature sensing element; the transcoder module stores a temperature state adjustment data set, and the transcoder module obtains a corresponding temperature state adjustment value string from the temperature state adjustment data set according to the temperature sensing signal; the transcoder module obtains a second lamp bead control signal according to the temperature state adjustment value string and the first lamp bead control signal; and the driver chip of the lamp bead unit controls the light-emitting state of the light-emitting chip according to the second lamp bead control signal.

[0017] It can be understood that the beneficial effects of the second to third aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic structural diagram of a lighting system provided in an embodiment of the present application; Figure 2 This is a structural diagram of a lighting system provided by another embodiment of the present application; Figure 3 This is a structural diagram of a transcoder module provided in another embodiment of the present application; Figure 4 This is a structural diagram of a lighting system provided by another embodiment of the present application; Figure 5 This is a flow chart of a control method provided by an embodiment of the present application; Figure 6 This is a flowchart of a control method provided in another embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0021] In the description of the embodiments of this application, unless otherwise specified, " / " represents or. For example, A / B can represent A or B. "And / or" in this article is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "plurality" means two or more than two.

[0022] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0023] Existing light panels used in automotive lighting systems are often located in various locations within the vehicle. For example, these locations might be around air conditioning vents, doors, and display screens. Furthermore, because the light panels' lamp units (e.g., ambient lighting) generate heat during operation, and the various vehicle components experience varying ambient temperatures depending on their location—for example, components near air conditioning vents typically experience lower ambient temperatures—the light-emitting diodes (LEDs) within these units exhibit varying colors and brightness levels when exposed to different temperatures. Therefore, to ensure stable color and brightness across varying temperatures, current compensation adjustments to the lamp units are often necessary.

[0024] The temperature compensation process of existing lighting systems generally requires two signal round trips to complete the temperature compensation adjustment of a lamp group (including multiple lamp beads connected in series). This means that the front-end MCU first issues a temperature feedback command, which is passed to the lamp beads in the corresponding lamp group. The lamp beads respond to the temperature feedback command by detecting the ambient temperature and returning the current ambient temperature information. The ambient temperature information is then transmitted to the front-end MCU. The MCU interprets the ambient temperature information and generates an adjustment parameter signal. The adjustment parameter signal is then transmitted to the lamp beads in the corresponding lamp group so that the lamp beads adjust the drive signal used to control the luminous state of the light-emitting chip according to the adjustment parameter signal. After the MCU completes the temperature compensation adjustment for one lamp group, it uses the same two signal round trips to adjust the next lamp group. Therefore, the temperature compensation process of the entire existing lighting system consumes a lot of MCU processing resources. Moreover, due to the lengthy processing time, it is impossible to perform temperature compensation for all lamp groups simultaneously, which in turn affects the display effect of the existing lighting system.

[0025] In view of this, an embodiment of the present application provides a lighting system and a control method, wherein a first lamp bead control signal is outputted through a control module, and a temperature sensing signal related to the temperature of the area where the temperature sensing element is located is obtained through a temperature sensing element. The first lamp bead control signal is adjusted by a transcoder module according to the temperature sensing signal and a pre-stored temperature state adjustment data set to obtain a second lamp bead control signal, so that the driver chip controls the light-emitting state of the light-emitting chip according to the second lamp bead control signal. The entire lighting system does not require the MCU to process the driver chip of each lamp bead unit one by one, and directly performs temperature compensation on the driver chip of each lamp bead unit through the transcoder module, thereby effectively shortening the temperature compensation cycle time of the lamp bead unit of each light board of the car, and having higher efficiency.

[0026] The following describes in detail the lighting system and control method for compensating for ambient temperature using a transcoder module provided in the embodiments of the present application in conjunction with the accompanying drawings.

[0027] Figure 1This is a schematic diagram of the structure of a lighting system provided by an embodiment of the present application. Figure 1 As shown, illustratively, a lighting system 30 includes at least one light board, a main control board, at least one temperature sensing element, and at least one transcoder module. The light board is provided with a plurality of serially connected lamp bead units. Each lamp bead unit (e.g., ICLED) includes a driver chip and at least one light-emitting chip. The driver chip is used to control the light-emitting state of the light-emitting chip. The main control board is provided with a control module 301. The control module 301 is used to output a first lamp bead control signal. Exemplarily, the control module 301 can be an MCU. The first lamp bead control signal includes a pulse width modulation signal or a current signal. The at least one light-emitting chip includes multiple light-emitting chips that emit light of different colors. The at least one light board includes multiple light boards, each of which is independently electrically connected to the main control board.

[0028] The temperature sensing element 303 is used to obtain a temperature sensing signal related to the temperature of the area where the temperature sensing element 303 is located. The transcoder module 302 is electrically connected to the control module 301, a plurality of lamp bead units and the temperature sensing element 302. The transcoder module 302 stores a temperature state adjustment data set. The transcoder module 302 is used to obtain a temperature state adjustment value string from the temperature state adjustment data set according to the temperature sensing signal, and the transcoder module 302 is used to obtain a second lamp bead control signal according to the temperature state adjustment value string and the first lamp bead control signal. Among them, the driver chip of the lamp bead unit is used to control the light-emitting state of the light-emitting chip according to the second lamp bead control signal, so that the temperature compensation adjustment of the lamp bead unit at different temperatures can be realized in the transcoder module 302, effectively shortening the temperature compensation cycle time of the lamp bead units in each part, and having higher efficiency.

[0029] Figure 2 This is a structural diagram of a lighting system provided by another embodiment of the present application. Figure 2 As shown, in another embodiment of the transcoder module 302, the transcoder module 302 may include a master transcoder unit 3021 and a slave transcoder unit 3022. The master transcoder unit 3021 is electrically connected to the control module 301 and is configured to transcode the first lamp bead control signal into a differential signal (e.g., a controller area network (CAN) differential signal). The slave transcoder unit 3022 is electrically connected to the master transcoder unit 3021, and the temperature state adjustment data set is stored in the slave transcoder unit 3022. The slave transcoder unit 3022 is configured to transcode the differential signal into a third lamp bead control signal. Simultaneously, the slave transcoder unit 3022 is configured to obtain a temperature state adjustment value string from the temperature state adjustment data set based on the temperature sensing signal, and adjust the third lamp bead control signal based on the temperature state adjustment value string to obtain a second lamp bead control signal.

[0030] It should be noted that the master transcoder unit 3021 is arranged on the main control board, the slave transcoder unit 3022 is arranged on the lamp board, and the temperature sensing unit 303 is arranged on the lamp board, the slave transcoder unit 3022 or the lamp bead unit. This setting facilitates signal conversion and transmission without distortion, and shortens the signal transmission and processing time.

[0031] It should be understood that the first and third lamp bead control signals contain the same information. As shown in Table 1, the temperature state adjustment data set includes the control signal adjustment ratios for the multiple light-emitting chips corresponding to the multiple different temperature sensing signals, and the temperature state adjustment value string includes the control signal adjustment ratios for the multiple light-emitting chips corresponding to the temperature sensing signals.

[0032] Table 1 Temperature state adjustment data set

[0033] For example, when the detected temperature of the temperature sensing element 303 is 85°C, the transcoder unit 3022 can obtain a corresponding temperature state adjustment value string based on the temperature state adjustment data set, and adjust the pulse width modulation (PWM) signal of blue light by 81%, the PWM signal of red light by 140%, the PWM signal of green light by 87%, and the PWM signal of white light by 103%. Therefore, when the first lamp bead control signal (PWM signal) received by the transcoder module 302 is 50% blue light (duty cycle, indicating that the current is on for 50% of the time and off for 50% of the time), 30% red light (duty cycle, indicating that the current is on for 30% of the time and off for 70% of the time), and 70% green light (duty cycle, indicating that the current is on for 70% of the time and off for 30% of the time), the second lamp bead control signal (PWM signal) emitted by the transcoder module 302 will be adjusted to 81%*50%=40.5% blue light, 140%*30%=42% red light, and 87%*70%=60.9% green light, and transmitted to the driver chip of the electrically connected lamp bead unit at the rear, so that the driver chip controls the light-emitting chip to emit light according to the adjusted second lamp bead control signal.

[0034] Figure 3 FIG. 3 is a structural diagram of another transcoder module (master transcoder unit 3021 or slave transcoder unit 3022) provided in an embodiment of the present application. Figure 3 As shown, each transcoder module 302 may have a unique address code, which is programmed via a one-time programmable memory (OTP). For example, each transcoder module 302 may be programmed via an OTP interface, and a CAN communication interface may serve as the OTP interface.

[0035] The transcoder module 302 includes a low dropout regulator (LDO), a power-on reset (POR), and an oscillator (OSC). The LDO provides a stable output voltage. The POR ensures that all internal circuits are properly initialized and enter a known stable state when the device is powered on. The OSC generates a clock signal.

[0036] The transcoder module 302 also includes a control center, which stores serial communication protocols such as the Serial Peripheral Interface (SPI), Inter-Integrated Circuit (I2C), and Universal Asynchronous Receiver / Transmitter (UART). The control center is also used to connect to the master input slave output (MISO) signal / DOUT2, the serial clock signal (SCLK) / CLK2, and the master output slave input (MOSI) signal / DIN2. The control center is also electrically connected to the driver chip of the lamp unit to transmit the transcoded lamp control signal to the driver chip.

[0037] The transcoder module 302 further includes a temperature sensing element and an analog-to-digital converter (ADC). The temperature sensing element is used to detect the current ambient temperature, and the ADC is used to convert the analog signal of the ambient temperature into a digital signal and send it to the control center.

[0038] The transcoder module 302 also includes register maps and transmit / receive first-in, first-out (TX / RX FIFO) buffers. The register maps organize hardware registers into a logical address space, allowing software to access and control hardware devices by reading and writing these addresses. In communications and data transmission, the TX FIFO and RX FIFO are buffers used to temporarily store data. The TX FIFO stores data to be transmitted, while the RX FIFO stores received data that has not yet been processed. The design of the transmit / receive buffers allows data to be processed in the order it enters the buffer.

[0039] Transcoder module 302 also includes a CAN FD controller with flexible data rate (CAN FD controller). A CAN FD controller is a variable-rate CAN controller, an extension of the CAN protocol, that allows for different bit rates within data frames. This allows the data transmission rate to be dynamically adjusted as needed, improving data transmission efficiency and flexibility.

[0040] The transcoder module 302 also includes a CAN physical layer (CAN PHY), which is responsible for converting the digital signals generated by the CAN controller into analog signals (such as differential signals CANL / CANH) that can be transmitted on a physical medium, and processing the received signals so that the CAN controller can interpret them.

[0041] It should be understood that the structure of the transcoder module provided in the embodiment of the present application can also be the internal structure of the master transcoder 3021 or the slave transcoder unit 3022. The transcoder module can be electrically connected to the MCU and the driver chip of the lamp bead unit.

[0042] Figure 4 This is a structural diagram of a lighting system provided by another embodiment of the present application. Figure 4 As shown, for example, a lamp board of the lighting system 30 has a lamp bead unit, and the driver chips 304 of the plurality of lamp bead units are electrically connected in sequence. The driver chip 304 is used to control the light-emitting state of the light-emitting chip.

[0043] In the embodiment of the present application, each driver chip 304 controls the light-emitting chip of the corresponding lamp bead unit to emit light according to the second lamp bead control signal from the transcoder module 302. For example, a string of second lamp bead control signals may carry N lamp bead control signals. When passing through the first driver chip 304, the first driver chip 304 will extract the corresponding signal length and then transmit the remaining signal. When passing through the second driver chip 304, the second driver chip 304 will also extract the corresponding signal length and then transmit the remaining signal, until all driver chips 304 receive the corresponding signal.

[0044] It should be understood that the lamp bead unit may carry a coded address or may not carry a coded address.

[0045] In another embodiment, exemplarily, a brightness compensation data set is also stored from the transcoder unit 3022, and the brightness compensation data set includes brightness compensation ratios corresponding to multiple lamp bead units. The second lamp bead control signal also includes the result of adjusting the third lamp bead control signal from the transcoder unit 3022 according to the brightness compensation ratio.

[0046] In an embodiment of the present application, the transcoder module 302 may also store brightness compensation data sets in different slave transcoder units when one master transcoder unit corresponds to multiple slave transcoder units, or when one master transcoder unit corresponds to one slave transcoder unit, so as to individually adjust the first lamp bead control signal of the corresponding lamp bead unit according to the brightness compensation data set to obtain a second lamp bead control signal. For example, when the ambient temperature is 25°C, different lamp bead units may have different optical structures and light absorption rates. Therefore, the brightness compensation data set can be used to individually adjust the first lamp bead control signal to obtain the second lamp bead control signal, thereby adapting to the brightness of lamp bead units located on the light board at different locations in the vehicle.

[0047] It should be understood that the brightness compensation data set may include compensation ratios of the luminous intensities of the multiple lamp bead units corresponding to different light absorbing materials. At the same time, the brightness compensation ratios are associated with the optical structure or setting position of the corresponding lamp bead unit.

[0048] In another embodiment, exemplarily, the temperature sensing element can also be provided in the lamp bead unit, so that the lamp bead unit obtains a temperature sensing signal and sends the temperature sensing signal to the transcoder module 302, so that the transcoder module 302 adjusts the first lamp bead control signal according to the temperature sensing signal and a pre-stored temperature state adjustment data set to obtain a second lamp bead control signal, so that the driving chip controls the light-emitting state of the light-emitting chip.

[0049] Figure 5 This is a flow chart of a control method provided by an embodiment of the present application. Figure 5 As shown, an embodiment of the present application provides a control method 40. The control method 40 may include the following steps: S401: The transcoder module receives a first lamp bead control signal sent by the control module and a temperature sensing signal sent by the temperature sensing element.

[0050] S402 : The transcoder module obtains a corresponding temperature state adjustment value string from a temperature state adjustment data set according to the temperature sensing signal.

[0051] Exemplarily, the transcoder module may pre-store a temperature state adjustment data set.

[0052] S403: The transcoder module adjusts the value string and the first lamp bead control signal according to the temperature state to obtain the second lamp bead control signal.

[0053] S404: The driving chip of the lamp bead unit controls the light-emitting state of the light-emitting chip according to the second lamp bead control signal.

[0054] Figure 6This is a flow chart of a control method provided by another embodiment of the present application. Figure 6 As shown, an embodiment of the present application provides a control method 50. The control method 50 may include the following steps: S501: The control module outputs a temperature feedback signal and sends it to the transcoder module.

[0055] For example, the control module outputs a temperature feedback signal to the transcoder module to control the driver chip to transmit a signal. It should be understood that during this feedback process, all lamp bead units controlled by the driver chip can transmit signals synchronously.

[0056] S502: The transcoder module receives the temperature feedback signal and sends it to the driver chip, so that the driver chip enters the temperature feedback mode.

[0057] Exemplarily, the driver chip enters the temperature feedback mode, which means that the driver chip can feedback a temperature signal, such as the current ambient temperature, to the transcoder module.

[0058] S503: The control module outputs a compensation signal and sends it to the transcoder module.

[0059] Exemplarily, the control module outputs a compensation signal so that the transcoder module compensates the control signal of the lamp bead unit.

[0060] S504 : The transcoder module receives the compensation signal and sends a clock signal to the driver chip, so that the driver chip transmits back the temperature sensing signal sent by the corresponding temperature sensing element.

[0061] S505 , the driver chip transmits back the temperature sensing signal sent by the corresponding temperature sensing element in combination with the clock signal.

[0062] For example, the driver chip may control the temperature sensing element to detect the current ambient temperature, and transmit back the temperature sensing signal sent by the corresponding temperature sensing element in combination with the clock signal.

[0063] S506: A temperature state adjustment data set is stored in the transcoder module. The transcoder module obtains a corresponding temperature state adjustment value string from the pre-stored temperature state adjustment data set according to the temperature sensing signal.

[0064] S507 , the transcoder module adjusts the value string and the first lamp bead control signal according to the temperature state to obtain the second lamp bead control signal.

[0065] Illustratively, the temperature compensation process is performed directly in the transcoder module without having to be performed in the control module, thereby shortening the compensation cycle time.

[0066] S508 , the driving chip of the lamp bead unit controls the light-emitting state of the light-emitting chip according to the second lamp bead control signal.

[0067] In summary, in the embodiment of the present application, the transcoder module first stores the PWM adjustment ratios of the lamp bead units on multiple lamp boards at different ambient temperatures (i.e., a temperature state adjustment data set). Then, a temperature sensing signal associated with the ambient temperature is detected based on the built-in temperature sensing element. Based on the temperature sensing signal, a corresponding temperature state adjustment value string is obtained from the temperature state adjustment data set. The first lamp bead control signal (e.g., a PWM signal) is proportionally adjusted based on the temperature state adjustment value string. The temperature state adjustment value string includes the control signal adjustment ratios of each of the multiple light-emitting chips corresponding to the temperature sensing signal. The original PWM signal of the first lamp bead control signal is multiplied by the set adjustment ratio. Finally, the transcoder module sends the adjusted PWM signal (second lamp bead control signal) to the lamp bead unit to control the light-emitting state of the light-emitting chip through the driver chip of the lamp bead unit.

[0068] In other words, in this embodiment of the present application, the transcoder module directly performs temperature compensation on the lamp control signal sent by the control module before forwarding it to the driver chip of the lamp unit, eliminating the need to transmit it back to the control module for temperature compensation. This shortens the compensation process for lamp units in different locations of the vehicle and improves efficiency. Furthermore, each transcoder module can directly perform temperature compensation, effectively improving the synchronization of light compensation for lamp units on multiple light boards.

[0069] It should be understood that the ambient temperature can be obtained by detecting the temperature sensing element inside the transcoder module, or by detecting the return information from the temperature sensing element built into the lamp bead unit.

[0070] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit of the technical solutions of the embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A lighting system, characterized in that: include: At least one light board, the light board having a plurality of lamp bead units connected in series, the lamp bead units including a driver chip and at least one light-emitting chip, the driver chip being used to control the light-emitting state of the light-emitting chip; A main control board, wherein the main control board is provided with a control module, and the control module is used to output a first lamp bead control signal; at least one temperature sensing element, configured to obtain a temperature sensing signal associated with a temperature of an area where the temperature sensing element is located; as well as At least one transcoder module is electrically connected to the control module, the plurality of lamp bead units and the temperature sensing element. A temperature state adjustment data set is stored in the transcoder module. The transcoder module is used to obtain a temperature state adjustment value string from the temperature state adjustment data set according to the temperature sensing signal, and the transcoder module is used to obtain a second lamp bead control signal according to the temperature state adjustment value string and the first lamp bead control signal, wherein the driver chip of the lamp bead unit is used to control the light-emitting state of the light-emitting chip according to the second lamp bead control signal.

2. The lighting system according to claim 1, wherein The transcoder module includes a master transcoder unit and a slave transcoder unit. The master transcoder unit is electrically connected to the control module. The master transcoder unit is used to transcode the first lamp bead control signal into a differential signal. The slave transcoder unit is electrically connected to the master transcoder unit. The temperature state adjustment data set is stored in the slave transcoder unit. The slave transcoder unit is used to transcode the differential signal into a third lamp bead control signal. The slave transcoder unit is used to obtain the temperature state adjustment value string from the temperature state adjustment data set according to the temperature sensing signal, and adjust the third lamp bead control signal according to the temperature state adjustment value string to obtain the second lamp bead control signal.

3. The lighting system according to claim 2, characterized in that The at least one light-emitting chip is a plurality of light-emitting chips that emit light of different colors from each other. The temperature state adjustment data set includes control signal adjustment ratios for each of the plurality of light-emitting chips corresponding to a plurality of different temperature sensing signals. The temperature state adjustment value string includes the control signal adjustment ratios for each of the plurality of light-emitting chips corresponding to the temperature sensing signals.

4. The lighting system according to claim 2, wherein: The master transcoder unit is provided on the main control board, the slave transcoder unit is provided on the lamp board, and the temperature sensing unit is provided on the lamp board, the slave transcoder unit or the lamp bead unit.

5. The lighting system according to claim 4, characterized in that The at least one light board comprises a plurality of light boards, and each of the plurality of light boards is independently and electrically connected to the main control board.

6. The lighting system according to claim 2, characterized in that The slave transcoder unit also stores a brightness compensation data set, which includes the brightness compensation ratios corresponding to each of the multiple lamp bead units. The second lamp bead control signal also includes the result of the slave transcoder unit adjusting the third lamp bead control signal according to the brightness compensation ratio.

7. The lighting system according to claim 6, characterized in that The brightness compensation ratio is associated with the optical structure or setting position of the corresponding lamp bead unit.

8. The lighting system according to claim 1, wherein: The first lamp bead control signal includes a pulse width modulation signal or a current signal.

9. A control method, characterized in that: Applied to the lighting system according to any one of claims 1 to 8, the method comprises: The transcoder module receives the first lamp bead control signal sent by the control module and the temperature sensing signal sent by the temperature sensing element; The transcoder module stores the temperature state adjustment data set, and the transcoder module obtains the corresponding temperature state adjustment value string from the temperature state adjustment data set according to the temperature sensing signal; The transcoder module adjusts the value string and the first lamp bead control signal according to the temperature state to obtain the second lamp bead control signal; and The driving chip of the lamp bead unit controls the light-emitting state of the light-emitting chip according to the second lamp bead control signal.

10. A control method, characterized in that: Applied to the lighting system according to any one of claims 1 to 8, the method comprises: The transcoder module receives the temperature feedback signal sent by the control module and sends it to the driver chip, so that the driver chip enters the temperature feedback mode; The transcoder module receives the compensation signal sent by the control module and sends a clock signal to the driver chip, so that the driver chip returns the temperature sensing signal sent by the corresponding temperature sensing element; The transcoder module stores the temperature state adjustment data set, and the transcoder module obtains the corresponding temperature state adjustment value string from the temperature state adjustment data set according to the temperature sensing signal; The transcoder module adjusts the value string and the first lamp bead control signal according to the temperature state to obtain the second lamp bead control signal; and The driving chip of the lamp bead unit controls the light-emitting state of the light-emitting chip according to the second lamp bead control signal.

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