An optical calibration system and method

Abstract

The application discloses an optical calibration system and method, relates to the technical field of automobile atmosphere lamps, and solves the problem of difficulty in quickly screening LED lamp beads with color temperatures matched with the material of lampshades. The optical calibration system comprises a light-emitting unit, the light-emitting unit comprises three light-emitting sources capable of emitting red, green and blue light respectively, a control and data processing unit for controlling the light-emitting intensity of the three light-emitting sources respectively, and a detection unit for detecting color temperatures, wherein the control and data processing unit is connected with the detection unit and uploads the detected data to the control and data processing unit for processing. The optical calibration system can quickly complete the screening of the color temperatures of LED lamp beads matched with lampshades in atmosphere lamps, the system has a simple structure, and can quickly screen the lamp beads with the required color temperatures without complex operations.

Description

Technical Field

[0001] This invention relates to the field of automotive ambient lighting technology, and in particular to an optical calibration system and method. Background Technology

[0002] Ambient lighting is a type of interior lighting device used in automobiles to create a comfortable driving environment and enhance the passenger experience. These lights typically emit soft, warm light and are installed in various corners of the vehicle, such as door panels, center console, and foot pedals. Ambient lighting can be customized with different colors and brightness levels to create different atmospheres.

[0003] Automotive ambient lighting consists of a light strip and a lampshade. The light strip is composed of several LED beads. The lampshade is made of a translucent material, allowing the light emitted by the beads to pass through and display either a cool or warm color tone. Because the color temperature of the light emitted by the beads changes after passing through the lampshade, it is generally slightly lower than the actual color temperature of the light emitted by the beads. Therefore, during the development of ambient lighting, the color temperature of the beads and the material of the lampshade must be matched to ensure that the color temperature of the light emitted by the beads after passing through the lampshade meets the design requirements.

[0004] If the color temperature of the light emitted by an LED chip is 7000K, the color temperature after passing through the lampshade may reach 6500K or even lower. Therefore, the color temperature of the LED chip will vary depending on the material of the lampshade. Finding an LED chip with a color temperature that matches the lampshade material is a problem that urgently needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned problems by designing an optical calibration system and method, which solves the problem of difficulty in quickly selecting LED beads whose color temperature matches the material of the lampshade.

[0006] The technical solution of the present invention to achieve the above objectives is an optical calibration system for quickly screening LED beads whose color temperature matches that of the lampshade, comprising:

[0007] The light-emitting unit includes three light-emitting sources that can emit red, green and blue light respectively;

[0008] A control and data processing unit is used to control the luminous intensity of the three light sources respectively;

[0009] A detection unit is used to detect color temperature. The detection unit is connected to the control and data processing unit and uploads the detected data to the control and data processing unit for processing.

[0010] An auxiliary plate is removably placed between the detection unit and the light-emitting unit. Light emitted by the three light sources can pass through the auxiliary plate. The material of the auxiliary plate is the same as that of the lampshade. When the auxiliary plate is not removed, the detection unit can detect the color temperature of the mixed light emitted by the three light sources after passing through the auxiliary plate. When the auxiliary plate is removed, the detection unit can detect the color temperature of the mixed light emitted by the three light sources.

[0011] Furthermore, the light-emitting unit includes three light-emitting diodes that can emit red, green and blue light respectively, and three PWM modules corresponding to the three light-emitting diodes respectively. The anode of the light-emitting diode is electrically connected to the PWM module, and the cathode of the light-emitting diode is grounded.

[0012] Furthermore, the control and data processing unit includes an MCU chip, which is connected to three PWM modules respectively and is used to send control signals to the three PWM modules.

[0013] Furthermore, it also includes a power supply unit and an input / output operation unit. The power supply unit is electrically connected to the three PWM modules respectively to supply power to the light-emitting diodes. The input / output operation unit is communicatively connected to the MCU chip.

[0014] Furthermore, the detection unit includes a CCD module, the detection end of which faces the light-emitting diode, and the CCD module is communicatively connected to the MCU chip.

[0015] This invention also provides an optical calibration method for quickly selecting LED beads whose color temperature matches the lampshade. The method includes the following steps:

[0016] S1. Place the auxiliary plate removably on one side of the three light sources (red, green, and blue) so that the mixed light emitted by the three light sources can pass through the auxiliary plate. The material of the auxiliary plate is the same as that of the lampshade. Then, adjust the brightness of the three light sources respectively and collect the color temperature of the mixed light after passing through the auxiliary plate. Stop adjusting when the color temperature of the mixed light after passing through the auxiliary plate reaches the set color temperature.

[0017] S2. Remove the auxiliary board and collect the color temperature of the three light sources. This color temperature is the color temperature of the LED beads that match the lampshade.

[0018] Furthermore, the color temperature of the mixed light emitted by the three light sources after passing through the auxiliary plate, as well as the color temperature of the three light sources themselves, were measured multiple times, and the average color temperature value was obtained.

[0019] Its advantages over existing technologies are:

[0020] The optical calibration system in this invention can quickly screen LED beads in ambient lights whose color temperature matches the lampshade. First, an auxiliary board is placed between three light sources and a detection unit. The light emitted by the three light sources of the mixing and dimming unit can pass through the auxiliary board and be detected by the detection unit. The brightness of the three light sources is controlled and adjusted by the control and data processing unit, and the brightness of the light passing through the auxiliary board changes accordingly. Next, the detection unit detects the color temperature of the light passing through the auxiliary board. During the adjustment process, when the detected color temperature reaches the set value, the brightness adjustment of the three light sources stops. Then, the auxiliary board is removed, and the detection unit directly detects the color temperature of the three light sources. Since the material of the auxiliary board is the same as that of the lampshade, this color temperature is the color temperature of the LED beads corresponding to that lampshade. This system has a simple structure and can quickly screen LED beads with the required color temperature without complicated operations. Attached Figure Description

[0021] Figure 1 This is a diagram showing the working state of the optical calibration system in this invention when an auxiliary plate is placed on it.

[0022] Figure 2 This is a diagram showing the working state of the optical calibration system in this invention when the auxiliary plate is removed;

[0023] Figure 3 This is a flowchart of the optical calibration method in this invention.

[0024] In the diagram, 1 is the input / output operation unit; 2 is the power supply unit; 3 is the control and data processing unit; 4 is the light-emitting unit; 41 is the PWM module; 5 is the auxiliary board; and 6 is the detection unit. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] like Figure 1 As shown, an embodiment of the present invention proposes an optical calibration system, which mainly includes an MCU chip, an input / output operation interface, a PWM module 41, a power supply module, a CCD module, and three light-emitting diodes that can emit red, green and blue light respectively.

[0027] Specifically, three LEDs and three PWM modules 41 are provided, together forming the light-emitting unit 4. The three PWM modules 41 correspond to the three LEDs. The anodes of the three LEDs (representing red, green, and blue in the diagram, respectively) are electrically connected to the three PWM modules 41 (i.e., pulse width conversion signal chips), while the cathodes of the three LEDs are grounded. The PWM modules 41 adjust the brightness of the three LEDs by controlling the duty cycle of the pulse signal (i.e., the proportion of the high-level time to the entire cycle).

[0028] The power supply module (i.e., power supply unit 2) is electrically connected to three PWM modules 41 to supply power to the three LEDs. The power supply module converts the incoming 220V AC power into DC power, and then connects it to the three LEDs in three separate paths, supplying power to the three LEDs through the middle PWM module 41.

[0029] The three PWM modules 41 are electrically connected to the MCU chip, which is used to control and process the data. The MCU chip sends control signals (PWM signals) to the three PWM modules 41, and the three PWM modules 41 control the brightness of the three LEDs according to the PWM signals.

[0030] The PWM signal sent by the MCU chip is a small current control signal that will be converted into a large voltage and large current signal required for the LED to work. The frequency is the same, and this signal is also the signal that controls the brightness of the LED.

[0031] The CCD module is located to the right of the LED in the diagram, directly facing it. This CCD module communicates with the MCU chip and uploads the detected color temperature data to the MCU chip.

[0032] The input / output operation interface communicates with the MCU. Control parameters are adjusted through the input / output interface, and then the color temperature of the three LEDs is adjusted through the MCU chip and PWM module 41. The parameters are displayed in real time on the input / output operation interface. The detection data of the CCD module is also displayed on the input / output operation interface.

[0033] In specific work, such as Figure 1 As shown, the auxiliary board 5 is first placed between the three light-emitting diodes and the CCD module, so that the mixed light emitted by the three light-emitting diodes can pass through the auxiliary board 5. The material of the auxiliary board 5 is the same as that of the lampshade.

[0034] Then, the brightness of the three light-emitting diodes is controlled and adjusted by the MCU chip and three PWM modules 41 respectively. During the adjustment process, the CCD module detects the color temperature of the mixed light after passing through the auxiliary board 5 in real time. When the color temperature of the mixed light after passing through the auxiliary board 5 reaches the set value, the brightness of the three light-emitting diodes is stopped and remains unchanged.

[0035] like Figure 2 As shown, the auxiliary board 5 is then removed, and the color temperature of the light emitted by the three LEDs is directly detected through the CCD module. This color temperature is the color temperature of the LED beads inside the ambient light that matches the material of the lampshade. During the entire process, the detection can be repeated multiple times, and the average color temperature value of the multiple detections can be used as the required color temperature of the LED beads to ensure more accurate detection results. For specific optical calibration methods, please refer to [reference needed]. Figure 3 .

[0036] Based on the different materials of the lampshade, the color temperature of the LED beads that match the lampshade material can be quickly detected using the calibration system described above. The operation is simple and the selection is fast.

[0037] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. An optical calibration system for rapidly selecting LED beads whose color temperature matches that of a lampshade, characterized in that, include: The light-emitting unit (4) includes three light-emitting sources that can emit red, green and blue light respectively; The control and data processing unit (3) is used to control the luminous intensity of the three light sources respectively; The detection unit (6) is used to detect color temperature. The detection unit (6) is connected to the control and data processing unit (3) and uploads the detected data to the control and data processing unit (3) for processing. An auxiliary plate is removably placed between the detection unit (6) and the light-emitting unit (4). Light emitted by the three light sources can pass through the auxiliary plate. The material of the auxiliary plate is the same as that of the lampshade. When the auxiliary plate is not removed, the detection unit (6) can detect the color temperature of the mixed light emitted by the three light sources after passing through the auxiliary plate. When the auxiliary plate is removed, the detection unit (6) can detect the color temperature of the mixed light emitted by the three light sources.

2. The optical calibration system according to claim 1, characterized in that, The light-emitting unit (4) includes three light-emitting diodes that can emit red, green and blue light respectively, and three PWM modules (41) corresponding to the three light-emitting diodes respectively. The anode of the light-emitting diode is electrically connected to the PWM module (41), and the cathode of the light-emitting diode is grounded.

3. The optical calibration system according to claim 2, characterized in that, The control and data processing unit (3) includes an MCU chip, which is connected to three PWM modules (41) respectively and is used to send control signals to the three PWM modules (41).

4. The optical calibration system according to claim 3, characterized in that, It also includes a power supply unit (2) and an input / output operation unit (1). The power supply unit (2) is electrically connected to the three PWM modules (41) respectively to supply power to the light-emitting diodes. The input / output operation unit (1) is communicatively connected to the MCU chip.

5. An optical calibration system according to claim 3, characterized in that, The detection unit (6) includes a CCD module, the detection end of which faces the light-emitting diode, and the CCD module is communicatively connected to the MCU chip.

6. An optical calibration method for rapidly selecting LED beads whose color temperature matches that of a lampshade, characterized in that, The method includes the following steps: S1. Place the auxiliary plate removably on one side of the three light sources (red, green, and blue) so that the mixed light emitted by the three light sources can pass through the auxiliary plate. The material of the auxiliary plate is the same as that of the lampshade. Then, adjust the brightness of the three light sources respectively and collect the color temperature of the mixed light after passing through the auxiliary plate. Stop adjusting when the color temperature of the mixed light after passing through the auxiliary plate reaches the set color temperature. S2. Remove the auxiliary board and collect the color temperature of the three light sources. This color temperature is the color temperature of the LED beads that match the lampshade.

7. The optical calibration method according to claim 6, characterized in that, The color temperature of the mixed light emitted by the three light sources after passing through the auxiliary plate and the color temperature of the three light sources were detected multiple times, and the average color temperature value was taken.

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