Novel optical calibration system and method

Abstract

The invention discloses a novel optical calibration system and method, relates to the technical field of automobile atmosphere lamps, and solves the problem that it is difficult to quickly screen LED lamp beads with the color temperature matched with the material of a lampshade. The light-emitting device comprises a light-emitting unit, and the light-emitting unit comprises three light-emitting sources capable of emitting red light, green light and blue light respectively. The control and data processing unit is used for respectively controlling the luminous intensity of the three luminous sources; and the detection unit is used for detecting color temperature, and the detection unit is connected with the control and data processing unit and uploads detected data to the control and data processing unit for processing. According to the optical calibration system, color temperature screening of the LED lamp beads matched with the lampshade in the atmosphere lamp can be rapidly completed, the system is simple in structure, and the lamp beads with the color temperature needed by people can be rapidly screened out without complex operation.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive ambient lights, in particular to a novel optical calibration system and method. Background Art

[0002] Automotive ambient lights are lighting devices used inside cars, aiming to create a comfortable driving environment and enhance the riding experience of passengers. These lights usually feature soft and warm light, and are installed in various corners inside the car, such as on the door trim, center console, footrest, etc. Ambient lights can be selected in different colors and brightness according to personal preferences to create different atmospheres.

[0003] Automotive ambient lights consist of a light strip and a lamp cover. The light strip is composed of several LED lamp beads. The lamp cover is made of a light-transmitting material, so the light emitted by the lamp beads can pass through the lamp cover, showing cold or warm-colored light. Since the color temperature of the light emitted by the lamp beads changes after passing through the lamp cover, generally being a little lower than the actual color temperature of the light emitted by the lamp beads, it is necessary to match the color temperature of the lamp beads with the material of the lamp cover during the development of ambient lights to ensure that the color temperature of the light emitted by the lamp beads can reach the design requirements after passing through the lamp cover.

[0004] Suppose the color temperature of the light emitted by the lamp beads is 7000K, and the color temperature of this light may reach 6500K or even lower after passing through the lamp cover. Therefore, different materials of the lamp cover will result in different color temperatures of the lamp beads. How to quickly find the color temperature of the lamp beads that matches the material of the lamp cover is an urgent problem to be solved. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems, and a novel optical calibration system and method are designed to solve the problem of difficultly and quickly screening LED lamp beads whose color temperature matches the material of the lamp cover.

[0006] The technical solution of the present invention to achieve the above purpose is a novel optical calibration system for quickly screening LED lamp beads whose color temperature matches the lamp cover, including: A light-emitting unit, where the light-emitting unit includes three light sources that can respectively emit red, green, and blue lights; A control and data processing unit for respectively controlling the light-emitting intensities of the three light sources; A detection unit for detecting the 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; The auxiliary board is removably placed between the detection unit and the light-emitting unit. The light emitted by the three light sources can pass through the auxiliary board. The material of the auxiliary board is the same as that of the lampshade. When the auxiliary board is not removed, the detection unit can detect the color temperature of the mixed light transmitted through the auxiliary board by the three light sources. When the auxiliary board is removed, the detection unit can detect the color temperature of the mixed light emitted by the three light sources.

[0007] 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 anodes of the light-emitting diodes are electrically connected to the PWM modules, and the cathodes of the light-emitting diodes are grounded.

[0008] Furthermore, the control and data processing unit includes an MCU chip. The MCU chip is respectively connected to the three PWM modules for sending control signals to the three PWM modules.

[0009] 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.

[0010] Furthermore, the detection unit includes a CCD module. The detection end of the CCD module faces the light-emitting diode, and the CCD module is communicatively connected to the MCU chip.

[0011] The present invention also provides a new optical calibration method for quickly screening LED lamp beads with a color temperature matching that of the lampshade. The method includes the following steps: S1. Removably place the auxiliary board on one side of the red, green, and blue light sources so that the mixed light emitted by the three light sources can pass through the auxiliary board. The material of the auxiliary board is the same as that of the lampshade. Then, adjust the brightness and darkness of the three light sources respectively, and collect the color temperature of the mixed light transmitted through the auxiliary board. When the detected color temperature of the mixed light transmitted through the auxiliary board reaches the set color temperature, stop adjusting. 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 lamp beads matching the lampshade.

[0012] Furthermore, during the process of detecting the color temperature of the mixed light emitted by the three light sources transmitted through the auxiliary board and the color temperature of the three light sources, detect multiple times and take the average color temperature value. Compared with the prior art, its beneficial effects are as follows: In the present invention, the optical calibration system can quickly complete the screening of LED lamp beads with a color temperature in the atmosphere lamp that matches the lamp shade. First, place the auxiliary board between the three light sources and the 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 control and data processing unit controls and adjusts the brightness of the three light sources. The brightness of the light passing through the auxiliary board will also change accordingly. Then, 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 adjustment of the brightness of the three light sources is stopped. 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 lamp shade, this color temperature is the color temperature of the LED lamp beads corresponding to the lamp shade. The system has a simple structure and can quickly screen out the lamp beads with the color temperature we need without complex operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 FIG. is a working state diagram of the optical calibration system in the present invention when the auxiliary board is placed; Figure 2 FIG. is a working state diagram of the optical calibration system in the present invention when the auxiliary board is removed; Figure 3 FIG. is a flowchart of the optical calibration method in the present invention.

[0014] In the figure, 1, input / output operation unit; 2, power supply unit; 3, control and data processing unit; 4, light emitting unit; 41, PWM module; 5, auxiliary board; 6, detection unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0016] As Figure 1 shown, an embodiment of the present invention proposes a new type of 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.

[0017] Specifically, there are three light-emitting diodes and three PWM modules 41, which together form a light-emitting unit 4. The three PWM modules 41 respectively correspond to the three light-emitting diodes. The anodes of the three light-emitting diodes (R, G, and B representing the three colors of red, green, and blue in the figure respectively) are electrically connected to the three PWM modules 41 (i.e., pulse-width conversion signal chips), and the cathodes of the three light-emitting diodes are grounded. The PWM module 41 adjusts the brightness of the three light-emitting diodes by controlling the duty cycle of the pulse signal (i.e., the proportion of the high-level time in the whole cycle).

[0018] The power supply module (i.e., the power supply unit 2) is electrically connected to the three PWM modules 41 respectively to supply power to the three light-emitting diodes. After converting the incoming 220V alternating current into direct current, the power supply module is connected to the three light-emitting diodes in three paths respectively, and supplies power to the three light-emitting diodes through the middle PWM module 41.

[0019] The three PWM modules 41 are respectively electrically connected to the MCU chip, and the MCU chip is used to control and process and analyze data. The MCU chip will send control signals to the three PWM modules 41 respectively. This signal is a PWM signal, and then the three PWM modules 41 will control the brightness of the three light-emitting diodes according to the PWM signal.

[0020] The PWM signal sent by the MCU chip is a small current control signal input, which will be converted into a large voltage and large current signal required for the operation of the light-emitting diode. The frequencies are the same, and this signal is also the signal for controlling the brightness of the light-emitting diode.

[0021] The CCD module is located on the right side of the light-emitting diode in the figure and is directly opposite the light-emitting diode. The CCD module is communicatively connected to the MCU chip and will upload the detected color temperature data to the MCU chip.

[0022] The input / output operation interface is communicatively connected to the MCU. By adjusting the control parameters through the input / output interface, then the color temperature of the three light-emitting diodes is adjusted through the MCU chip and the PWM module 41, and 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.

[0023] Specifically, during operation, as Figure 1 shown, first place the auxiliary board 5 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.

[0024] Then, the brightness of the three light-emitting diodes is controlled and adjusted respectively through the MCU chip and three PWM modules 41. During the adjustment process, the CCD module detects the color temperature of the mixed light transmitted through the auxiliary board 5 in real time. When the detected color temperature of the mixed light transmitted through the auxiliary board 5 reaches the set value, the adjustment of the brightness of the three light-emitting diodes is stopped and remains unchanged.

[0025] As Figure 2 shown, then the auxiliary board 5 is removed, and the color temperature of the light emitted by the three light-emitting diodes is directly detected through the CCD module. This color temperature is the color temperature of the LED lamp beads that match the material of the lampshade in the required atmosphere lamp. During the entire operation process, multiple detections can be repeated, and the average color temperature value of the multiple detection results is used as the color temperature of the required LED lamp beads to ensure more accurate detection results. The specific optical calibration method can refer to Figure 3 .

[0026] According to the lampshades of different materials, the color temperature of the LED lamp beads that match the lampshades of this material can be quickly detected based on the above calibration system, with simple operation and fast screening.

[0027] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to some parts by those skilled in the art of this technology all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A novel optical calibration system for rapidly screening LED lamp beads whose color temperature matches the lampshade, characterized in that, Comprising: A light-emitting unit (4), the light-emitting unit (4) comprising three light sources respectively capable of emitting red, green, and blue light; A control and data processing unit (3) for respectively controlling the light-emitting intensities of the three light sources; A detection unit (6) for detecting the color temperature, the detection unit (6) being connected to the control and data processing unit (3) and uploading 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), and the 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 passing through the auxiliary plate after the light emitted by the three light sources. 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 novel optical calibration system according to claim 1, characterized in that, The light-emitting unit (4) comprises three light-emitting diodes respectively capable of emitting red, green, and blue light and three PWM modules (41) respectively corresponding to the three light-emitting diodes. The anodes of the light-emitting diodes are electrically connected to the PWM modules (41), and the cathodes of the light-emitting diodes are grounded.

3. The novel optical calibration system according to claim 2, wherein, The control and data processing unit (3) comprises an MCU chip, and the MCU chip is respectively connected to the three PWM modules (41) for sending control signals to the three PWM modules (41).

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

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

6. A novel optical calibration method for rapidly screening LED lamp beads with a color temperature matching the lamp shade, characterized in that, The method comprises the following steps: S1. Removably place the auxiliary plate on one side of the red, green, and blue light sources 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 respectively adjust the brightness and darkness of the three light sources, and collect the color temperature of the mixed light passing through the auxiliary plate. When the detected color temperature of the mixed light passing through the auxiliary plate reaches the set color temperature, stop adjusting; S2. Remove the auxiliary plate and collect the color temperature of the three light sources, and this color temperature is the color temperature of the LED lamp beads matching the lampshade.

7. A novel optical calibration system according to claim 6, characterized in that, During the process of detecting the color temperature of the mixed light emitted by the three light sources passing through the auxiliary plate and the color temperature of the three light sources, detect multiple times and take the average color temperature value.

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