Anti-dazzle windshield control system and device

Abstract

The invention relates to the technical field of automobile active safety, and discloses an anti-dazzle windshield control system and device.The system comprises a light sensing unit, a control unit, an execution unit and a polarized light adjusting unit.The adaptive control unit is arranged, and when windshield dazzle is inhibited in real time, the adaptive control unit can automatically adjust the polarized light of the windshield; a fuzzy control rule based on the dynamic characteristics of ambient light is established, differentiated polaroid adjustment strategies are set for different illumination intensities, the adaptability of the system to complex illumination conditions is ensured, meanwhile, glare intensity changes caused by sudden change of light are processed in real time, and the dazzling effect is improved. The problems of response lag and adjustment misalignment caused by too high change rate of ambient light intensity can be effectively avoided, the accuracy and timeliness of glare suppression are ensured, the view definition and driving safety of a driver in a strong light environment are improved, and when angle deviation is detected, the angle of the polaroid can be dynamically corrected according to a real-time calibration instruction, so that the driving safety of the driver is improved. And the reduction of the anti-dazzle effect caused by angle deviation is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile active safety technology, in particular to a windshield control system and device for preventing glare. BACKGROUND

[0002] Automobile active safety technology is a technology to ensure the safety of drivers and pedestrians, which is mainly divided into active safety technology and passive safety technology.

[0003] The windshield control system and device for preventing glare are important components of modern automobile safety driving assistance systems, aiming to improve the driver's visual clarity and driving safety in strong light environments, which is one of the core functions of the system. By adjusting the light intensity entering the cockpit in real time, the glare effect caused by direct sunlight and oncoming vehicle lights is reduced, ensuring that the driver can clearly observe the road conditions ahead. In order to ensure the timeliness and accuracy of light adjustment, the system is equipped with advanced light sensing and control units to ensure the control effect of the anti-glare windshield.

[0004] At present, due to the complex and variable characteristics of environmental light during driving, when the front windshield glare is real-time suppressed, the light parameters obtained by the light sensor cannot be real-time processed by the light intensity mutation caused by the tunnel entrance and exit, the high-rise gap and the oncoming vehicle high beam. When the rate of change of environmental light intensity is too high, it will cause the control system to respond lag and the adjustment to be inaccurate, which cannot guarantee the accuracy of glare suppression.

[0005] Therefore, the present application provides a windshield control system and device for preventing glare to solve the above problems. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides a windshield control system and device for preventing glare to solve the problems raised in the background art.

[0007] To achieve the above purpose, the present application provides the following technical solution: a windshield control system and device for preventing glare, the device comprising a light sensor, a controller, a motor and a polarizing plate device; The light sensor obtains the brightness intensity parameters and illumination direction parameters of the light source, the controller generates control instructions based on the brightness intensity parameters and illumination direction parameters, the motor drives the rotating shaft to rotate in response to the control instructions, and the polarizing plate device comprises a fixedly arranged glass substrate and a rotatable polarizing plate. The polarizing plate is connected with the motor through the rotating shaft and adjusts the angle by rotating to reduce the brightness of the light source. The device monitors the light information in real time through the light sensor, and the controller adaptively adjusts the rotation angle of the polarizing plate to keep the brightness of the light entering the driver's eyes appropriate.

[0008] Preferably, the light sensor is installed on the windshield near the driver's eyes, and the luminance intensity parameter and the light direction parameter are transmitted to the controller through the optical fiber line, the luminance intensity parameter represents the luminance value of the light source, and the light direction parameter represents the angle of the light source relative to the glass substrate.

[0009] Preferably, the controller uses a fuzzy adaptive control algorithm to process the luminance intensity parameter and the light direction parameter to generate the control instruction, the fuzzy adaptive control algorithm is based on the luminance change rate and the current luminance level to execute the control rule, and the control rule includes a first rule when the luminance increases and a second rule when the luminance decreases.

[0010] Preferably, the first rule and the second rule are executed based on the following formulas: First formula: luminance normalization formula: , wherein, : original luminance intensity, unit lux, representing the actual luminance value measured by the light sensor, : normalized luminance, range [0, 1], : minimum luminance threshold, set to 0 lux, corresponding to a completely dark environment, : maximum luminance threshold, set to 10000 lux, corresponding to a strong sunlight direct environment; Second formula: polaroid rotation angle output formula: , wherein, : output rotation angle, unit degree, range [0°, 90°], : normalized luminance, : normalized luminance change rate, : fuzzy control function, based on and query the preset rule table to output the angle value; Threshold definition: luminance level threshold: "soft bright", "bright", "relatively bright", "very bright"; Change rate threshold: "zero", "small", "medium", "large".

[0011] Preferably, the glass substrate is fixedly arranged in the polarizing plate device, the polarizing plate is perpendicular to the glass substrate by default, and the rotation angle of the polarizing plate is adjusted in the vertical direction of the light source by driving the motor to rotate the rotating shaft, so as to avoid direct sunlight and light from the opposite vehicle. The rotation angle of the polarizing plate ranges from 0° to 90°, wherein 0° corresponds to the lowest light transmittance state.

[0012] Preferably, the system comprises a light sensing unit, a control unit, an execution unit and a polarizing adjustment unit. The light sensing unit collects the brightness intensity parameter and the illumination direction parameter of the light source; the control unit generates a control instruction based on the brightness intensity parameter and the illumination direction parameter; the execution unit drives the polarizing plate to rotate in response to the control instruction; and the polarizing adjustment unit comprises a fixed glass substrate and an adjustable polarizing plate, and the light intensity is adjusted by rotation.

[0013] Preferably, the light sensing unit is connected to the control unit through an optical fiber line and is installed at a specified position of the windshield. The control unit integrates a fuzzy control algorithm and dynamically outputs the control instruction based on the brightness change rate and the current brightness level. The execution unit comprises a motor and a rotating shaft, and the motor receives the control instruction to drive the rotating shaft to rotate.

[0014] Preferably, the fuzzy control algorithm executes a control rule, which comprises a first control rule when the brightness increases and a second control rule when the brightness decreases. The first control rule is: when the brightness change rate is zero and the brightness level is soft, the output rotation angle is 90°; when the brightness change rate is small and the brightness level is bright, the output rotation angle is 60°; when the brightness change rate is medium and the brightness level is relatively bright, the output rotation angle is 0°; and when the brightness change rate is large and the brightness level is very bright, the output rotation angle is 0°. The second control rule is: when the brightness change rate is zero and the brightness level is soft, the output rotation angle is 90°; when the brightness change rate is small and the brightness level is bright, the output rotation angle is 30°; when the brightness change rate is medium and the brightness level is relatively bright, the output rotation angle is 30°; and when the brightness change rate is large and the brightness level is very bright, the output rotation angle is 0°.

[0015] Preferably, the glass substrate in the polarizing adjustment unit is fixed to the windshield frame, and the adjustable polarizing plate is connected to the execution unit through the rotating shaft. In the default state, the polarizing plate is perpendicular to the glass substrate, and the light transmittance is reduced by adjusting the rotation angle.

[0016] Preferably, the system further comprises a data integration module, which combines the brightness intensity parameter, the light direction parameter and the control instruction into calibration data, and the control unit calls the calibration data to dynamically calibrate the light source brightness in real time, and outputs the adjusted light parameter.

[0017] Compared with the prior art, the present application provides a glare-proof windshield control system and device, which has the following beneficial effects: 1. In the present application, by setting the adaptive control unit, when the windshield glare is inhibited in real time, the fuzzy control rule based on the dynamic characteristics of the ambient light is established, and the differentiated polarizing plate adjustment strategy is set for different light intensities, which ensures the adaptability of the system to complex light conditions, and at the same time, the glare intensity change caused by light mutation is processed in real time, which can effectively avoid the problems of response lag and adjustment error caused by too high change rate of environmental light intensity, ensure the accuracy and timeliness of glare suppression, and improve the visual clarity and driving safety of the driver in strong light environment.

[0018] 2. In the present application, by setting the light source direction and polarizing plate angle cooperative calibration mechanism, when the light is adjusted, the light source direction parameter is obtained in real time and matched with the driver's line of sight direction and the current polarizing plate angle, and it is judged whether there is angle deviation, so that the system can reduce the deviation between the polarizing plate rotation angle control and the actual anti-glare demand, and when the angle deviation is detected, the polarizing plate angle can be dynamically corrected according to the real-time calibration instruction, the deviation is actively compensated, the light adjustment is aligned with the glare source, and the decline of anti-glare effect caused by angle deviation is reduced.

[0019] 3. In the present application, by setting the multi-stage adaptive light regulation module, when dealing with continuously changing glare environment, the hierarchical and fine polarizing plate angle adjustment strategy is automatically executed according to the real-time light intensity gradient change, the anti-glare demand under different glare sources and light levels is dynamically matched, so that the system can realize multi-stage and adaptive accurate regulation from soft light suppression to strong light direct blocking, overcome the limitations of traditional single adjustment strategy in complex scenes, reduce the risk of over-regulation and under-regulation of the system, and improve the stability, response smoothness and overall user experience of anti-glare control. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall system architecture schematic diagram of the present application. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0022] Please refer to Figure 1 The anti-glare windshield control system and device, the device includes a light sensor, a controller, a motor and a polarizer device; The light sensor obtains the brightness intensity parameter and the illumination direction parameter of the light source, the controller generates a control instruction based on the brightness intensity parameter and the illumination direction parameter, and the motor drives the rotation shaft to rotate in response to the control instruction. The polarizer device includes a fixedly arranged glass substrate and a rotatable polarizer, the polarizer is connected with the motor through the rotation shaft, and the brightness of the light source is reduced by adjusting the angle of rotation. The device monitors the light information in real time through the light sensor, and the controller adaptively adjusts the rotation angle of the polarizer to keep the brightness of the light entering the driver's eyes appropriate; The light sensor is installed at the part of the windshield close to the driver's eyes, and the brightness intensity parameter and the illumination direction parameter are transmitted to the controller through the optical fiber line. The brightness intensity parameter represents the brightness value of the light source, and the illumination direction parameter represents the angle of the light source relative to the glass substrate; The controller uses a fuzzy adaptive control algorithm to process the brightness intensity parameter and the illumination direction parameter to generate a control instruction. The fuzzy adaptive control algorithm executes control rules based on the brightness change rate and the current brightness level. The control rules include a first rule when the brightness increases and a second rule when the brightness decreases; The first rule and the second rule are executed based on the following formula: The first formula: brightness normalization formula: , Wherein, : original brightness intensity, unit lux, representing the actual brightness value measured by the light sensor, : normalized brightness, range [0, 1], : minimum brightness threshold, set to 0 lux, corresponding to a completely dark environment, : maximum brightness threshold, set to 10000 lux, corresponding to a strong sunlight direct environment; The second formula: polarizer rotation angle output formula: , Wherein, : output rotation angle, unit degree, range [0°, 90°], : normalized brightness, : normalized brightness change rate, : fuzzy control function, based on and querying a preset rule table to output an angle value; threshold definition: brightness level threshold: "soft bright", "bright", "relatively bright", "very bright"; change rate threshold: "zero", "small", "medium", "large"; The glass substrate is fixedly arranged in the polarizing plate device, and the polarizing plate is perpendicular to the glass substrate by default. The polarizing plate is rotated by a motor-driven rotating shaft to adjust the angle of the polarizing plate in the vertical direction of the light source, so as to avoid direct sunlight and direct light from an opposite vehicle. The rotation angle range of the polarizing plate is 0° to 90°, wherein 0° corresponds to the lowest light transmittance state. The system comprises a light sensing unit, a control unit, an execution unit and a polarizing adjustment unit; The light sensing unit collects the brightness intensity parameter and the illumination direction parameter of the light source. The control unit generates a control instruction based on the brightness intensity parameter and the illumination direction parameter. The execution unit drives the polarizing plate to rotate in response to the control instruction. The polarizing adjustment unit comprises a fixed glass substrate and an adjustable polarizing plate, and the light intensity is adjusted by rotation; The light sensing unit is connected to the control unit through an optical fiber line and is installed at a specified position of the windshield. The control unit integrates a fuzzy control algorithm and dynamically outputs a control instruction based on the brightness change rate and the current brightness level. The execution unit comprises a motor and a rotating shaft, and the motor receives the control instruction to drive the rotating shaft to rotate; The fuzzy control algorithm executes control rules, including a first control rule when the brightness increases and a second control rule when the brightness decreases; The first control rule is: when the brightness change rate is zero and the brightness level is soft bright, the output rotation angle is 90°; when the brightness change rate is small and the brightness level is bright, the output rotation angle is 60°; when the brightness change rate is medium and the brightness level is relatively bright, the output rotation angle is 0°; and when the brightness change rate is large and the brightness level is very bright, the output rotation angle is 0°; The second control rule is: when the brightness change rate is zero and the brightness level is soft bright, the output rotation angle is 90°; when the brightness change rate is small and the brightness level is bright, the output rotation angle is 30°; when the brightness change rate is medium and the brightness level is relatively bright, the output rotation angle is 30°; and when the brightness change rate is large and the brightness level is very bright, the output rotation angle is 0°; The glass substrate in the polarization adjusting unit is fixed to the windshield frame, and the adjustable polaroid is connected to the executing unit through a rotating shaft. In the default state, the polaroid is perpendicular to the glass substrate, and the light transmittance is reduced by adjusting the rotation angle. The system further comprises a data integration module for combining the brightness intensity parameter, the light direction parameter and the control instruction into calibration data, and the control unit calls the calibration data to dynamically calibrate the light source brightness in real time, and outputs the adjusted light parameter.

[0023] Embodiment 1: Anti-glare windshield control device This embodiment describes the physical implementation of the device of claims 1-5 in detail. The light sensor uses a high-sensitivity photoelectric sensor installed at the central position of the upper edge of the vehicle windshield, which simulates the driver's eye level. The real-time collected light source brightness intensity parameter and light direction angle parameter are transmitted to the controller through the embedded optical fiber line. The controller is a vehicle-mounted embedded system, which integrates a fuzzy adaptive control algorithm core module. The hardware uses a vehicle-grade MCU chip with a working frequency of 120MHz.

[0024] When the light sensor detects a strong light signal, the controller completes the following operations within a 10ms response period: first, analyze the brightness change rate by calculating the difference between two consecutive frames of brightness data, then match the preset fuzzy control rule library, and finally generate motor driving instructions. The executing unit uses a miniature stepper motor with a rated torque of 0.5N·m. The polaroid device is driven by a shaft connected through a shaft coupling. In this device, a 2.3mm thick tempered glass substrate is fixed to the windshield interlayer by epoxy resin glue. The initial state of the polaroid is perpendicular to the glass substrate. When the motor receives the "rotate 60°" instruction, the shaft drives the polaroid to complete the angle adjustment within 150ms, so that the incident light polarization direction forms a 60° angle with the polaroid transmission axis, and the transmission rate is reduced to 35%, effectively reducing glare.

[0025] The key of this embodiment is the cooperation of fuzzy control rules and hardware: in the night meeting scene, when the brightness mutation rate exceeds 9000lux / s and the current normalized brightness is greater than 0.75, the controller immediately outputs a 0° rotation instruction to make the polaroid enter the full shielding mode.

[0026] Embodiment 2: Anti-glare windshield control system This embodiment corresponds to the system-level implementation of claims 6-10. The light sensing unit is composed of a distributed sensor array, which includes three wide-angle photosensitive elements arranged in the upper left, upper center and upper right areas of the windshield. The multi-node data is transmitted to the control unit through the CAN bus.

[0027] The control unit is deployed in the vehicle central domain controller, and its fuzzy control algorithm contains two layers of decision-making mechanisms: the first layer linearly maps the original brightness value to the [0, 1] interval through a normalization module, and the second layer performs a double-rule base query based on a dynamic threshold classifier. When the system detects a sudden change in sunlight at the tunnel exit, the control unit locks the "brightness increase · medium change rate · brighter level" entry in the rule base, generates a "30° rotation" instruction, and the brushless DC motor of the execution unit reduces the rotation speed to 50 rpm through a planetary gear box, driving a titanium alloy rotating shaft with a diameter of 8 mm to rotate, with a torque fluctuation control within ±5%.

[0028] The polarization adjustment unit adopts a composite structure: the outer layer is a wedge-shaped glass substrate with an inclination angle of 5° to reduce ghosting, and the inner layer is coated with a nano anti-reflection film on the surface of the polarizing sheet. The data integration module refreshes the calibration data packet every 200 ms, including the latest light source direction vector and historical control instruction sequence. In the actual measurement scene, when the system detects that the glare direction reflected by the rearview mirror deviates from the driver's line of sight by 15°, the calibration module compensates the rotation angle of the polarizing sheet within 80 ms, reducing the transmittance error caused by angle deviation.

[0029] The innovation of the system lies in the dynamic closed-loop control: in the rain and dusk scene, the system continuously tracks the brightness change rate and brightness level, and stabilizes the angle of the polarizing sheet through the staged regulation module, reducing the visual discomfort caused by frequent angle switching.

[0030] Example 3, rearview mirror anti-glare control subsystem The light sensor adopts a miniature infrared enhanced sensor, which is embedded in the frame of the rearview mirror of the vehicle and is located opposite the center line of the rear window to cover a 180-degree field of view. The brightness intensity parameters and direction vectors of the rear light source collected in real time are transmitted to the control unit through a shielded twisted pair line. The control unit is integrated in the safety sub-module of the body domain controller. The hardware is based on an ASIL-D level multi-core processor with a main frequency of 200 MHz and is equipped with a dedicated fuzzy rule accelerator. When the high beam of the rear vehicle is detected to be activated, the control unit performs multi-level decision within 15 ms. First, the original brightness is mapped to the interval [0, 1] through a normalization module. Then, the "brightness reduction·large change rate·very bright level" entry is locked in the dynamic rule base to generate a "0° rotation" instruction. A miniature voice coil motor with a peak torque of 0.8 N·m is selected as the execution unit to drive the polarizing plate device built in the rearview mirror through a carbon fiber coupling. In the device, the glass substrate is adhered to the surface of the rearview mirror at an inclination angle of 5°, and the initial angle of the polarizing plate is 45°. When the instruction is executed, the polarizing plate is switched to the 0° position within 100 ms, which reduces the light transmittance and blocks the strong light of the rear vehicle. The innovation lies in the spatial adaptive mechanism. In the high-speed following scenario, the system analyzes the direction offset of the rear light source in real time, compensates the rotation angle of the polarizing plate by 5° within 50 ms through an angle calibration module, reduces the scattered glare, and reduces the false triggering caused by environmental interference. The measured data shows that the rearview field of view recovery time of the driver is shortened, and the night driving safety is improved.

[0031] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0032] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous modifications and changes can be made to the embodiments without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. An anti-glare windshield control device, characterized in that: The device includes a photosensor, a controller, a motor and a polarizer device; The photoreceptor obtains the brightness intensity parameter and the lighting direction parameter of the light source, the controller generates a control instruction based on the brightness intensity parameter and the lighting direction parameter, the motor drives the rotating shaft to rotate in response to the control instruction, the polarizer device includes a fixed glass substrate and a rotatable polarizer, the polarizer is connected to the motor through the rotating shaft, and the angle is adjusted by rotation to reduce the brightness of the light source. The device monitors the light information in real time through the photoreceptor, and adaptively adjusts the rotation angle of the polarizer through the controller to maintain an appropriate brightness of the light entering the driver's eyes.

2. The anti-glare windshield control device according to claim 1, characterized in that: The light sensor is installed on the windshield near the driver's eyes and transmits the brightness intensity parameter and the light direction parameter to the controller through an optical fiber. The brightness intensity parameter represents the brightness value of the light source, and the light direction parameter represents the angle of the light source relative to the glass substrate.

3. The anti-glare windshield control device according to claim 1, characterized in that: The controller uses a fuzzy adaptive control algorithm to process the brightness intensity parameter and the lighting direction parameter to generate the control instruction. The fuzzy adaptive control algorithm executes control rules based on the brightness change rate and the current brightness level. The control rules include a first rule when the brightness increases and a second rule when the brightness decreases.

4. The anti-glare windshield control device according to claim 3, characterized in that: The first and second rules are executed based on the following formulas: The first formula: Brightness normalization formula: ， in, : Original brightness intensity, in lux, represents the actual brightness value measured by the light sensor. : Normalized brightness, range [0,1], : Minimum brightness threshold, set to 0lux, corresponding to a completely dark environment, : Maximum brightness threshold, set to 10000 lux, corresponding to strong direct sunlight environment; The second formula: Polarizer rotation angle output formula: ， in, : Output rotation angle, unit degree, range [0°, 90°], : Normalized brightness, : Normalized brightness change rate, : Fuzzy control function, based on and Query the preset rule table to output the angle value; Threshold Definition: Brightness Level Threshold: For "soft and bright", For "bright", is "brighter", for "very bright"; Rate of change threshold: is "zero", For "small", For "middle", For "big".

5. The anti-glare windshield control device according to claim 1, characterized in that: The glass substrate in the polarizer device is fixedly arranged, and the polarizer is perpendicular to the glass substrate by default. The motor drives the rotating shaft to rotate, so that the polarizer is adjusted in the vertical direction of the light source to avoid direct light from sunlight and oncoming vehicles. The rotation angle range of the polarizer is 0° to 90°, where 0° corresponds to the lowest transmittance state.

6. An anti-glare windshield control system, used to implement the anti-glare windshield control device according to any one of claims 1 to 5, characterized in that: The system includes a light sensing unit, a control unit, an execution unit and a polarization adjustment unit; The light sensing unit collects the brightness intensity parameters and the light direction parameters of the light source; the control unit generates a control instruction based on the brightness intensity parameters and the light direction parameters; the execution unit drives the polarizer to rotate in response to the control instruction; the polarization adjustment unit includes a fixed glass substrate and an adjustable polarizer, which adjusts the light intensity by rotation.

7. The anti-glare windshield control system according to claim 6, characterized in that: The light-sensing unit is connected to the control unit via an optical fiber and is installed at a designated position on the windshield. The control unit integrates a fuzzy control algorithm and dynamically outputs the control instruction based on the brightness change rate and the current brightness level. The execution unit includes a motor and a rotating shaft. The motor receives the control instruction and drives the rotating shaft to rotate.

8. The anti-glare windshield control system according to claim 7, characterized in that: The fuzzy control algorithm executes control rules including a first control rule when brightness increases and a second control rule when brightness decreases; The first control rule is: when the brightness change rate is zero and the brightness level is soft and bright, the output rotation angle is 90°; when the brightness change rate is small and the brightness level is bright, the output rotation angle is 60°; when the brightness change rate is medium and the brightness level is bright, the output rotation angle is 0°; when the brightness change rate is large and the brightness level is very bright, the output rotation angle is 0°; The second control rule is: when the brightness change rate is zero and the brightness level is soft and bright, the output rotation angle is 90°; when the brightness change rate is small and the brightness level is bright, the output rotation angle is 30°; when the brightness change rate is medium and the brightness level is brighter, the output rotation angle is 30°; when the brightness change rate is large and the brightness level is very bright, the output rotation angle is 0°.

9. The anti-glare windshield control system according to claim 6, characterized in that: The glass substrate in the polarization adjustment unit is fixed to the windshield frame, and the adjustable polarizer is connected to the execution unit via the rotating shaft. In a default state, the polarizer is perpendicular to the glass substrate, and the light transmittance is reduced by adjusting the rotation angle.

10. The anti-glare windshield control system according to claim 6, characterized in that: The system also includes a data integration module that combines the brightness intensity parameter, the lighting direction parameter and the control instruction into calibration data. The control unit calls the calibration data to perform real-time dynamic calibration on the light source brightness and outputs the adjusted light parameters.

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