Intelligent light environment detection and adjustment system and method for high-speed train

Abstract

The invention provides an intelligent light environment detection and adjustment system and method for a high-speed train. The system comprises an optical illumination module, a light imaging camera module, a data processing module, a photochromic glass control module and an in-train illumination adjustment module. A dual detection scheme of combining illumination detection outside a car window and illumination detection in a carriage is introduced, comprehensive perception of light environments inside and outside the carriage is ensured, dynamic calculation and real-time feedback are performed on glare in the visual field of passengers through a specific algorithm, and the glare problem can be accurately detected and quickly responded; intelligent adjustment of the photochromic glass and dynamic adjustment of illumination in a vehicle can be achieved at the same time, external illumination changes can be automatically dealt with, the direct influence of strong light on the interior of a compartment is reduced, it is ensured that the light environment in the compartment is uniform and soft, and visual fatigue is reduced. Therefore, light environment management in the compartment of the high-speed train can be effectively improved, the influence of glare on passengers and drivers is reduced, and the running safety and comfort are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed train lighting, and in particular to an intelligent light environment detection and adjustment system and method for a high-speed train. Background Art

[0002] In the current high-speed train operation environment, changes in lighting conditions have a significant impact on passenger comfort and safety. The natural light source outside the carriage, especially during high-speed travel, often changes dramatically due to changes in train speed and route, resulting in unstable lighting conditions inside the carriage. This external light enters the carriage directly through the windows, which can easily cause glare on certain seats, affecting the visual comfort of passengers and may even interfere with the driver's operation, thus affecting the safety of high-speed train travel.

[0003] Some existing train lighting systems mainly rely on manual or preset modes for lighting adjustment, which cannot respond to changes in external lighting in real time, resulting in the inability to adjust the light environment inside the carriage in a timely manner. In addition, although some trains use color-changing glass technology, they lack dynamic detection and real-time feedback of the light environment inside and outside the carriage, resulting in delayed or inaccurate adjustment of the light transmittance of the glass, and unable to effectively solve the glare problem encountered by passengers in different seats.

[0004] Another common problem is that the existing train lighting system does not fully consider the impact of external natural light sources on the interior lighting environment. It usually uses fixed lighting brightness and cannot flexibly adjust the internal lighting level according to changes in external lighting. This design makes it easy for excessive light to appear in the passenger's field of vision under strong sunlight. Long-term exposure to glare can cause visual fatigue and even pose a safety hazard.

[0005] In summary, the main defects of the prior art include:

[0006] There is a lack of real-time detection of changes in external lighting, and the lighting environment in the car cannot be adjusted in time; the existing photochromic glass is not accurate enough to adapt to changes in lighting during high-speed driving; the interior lighting system fails to effectively link with the external lighting environment and cannot dynamically balance the lighting differences inside and outside the car, which easily leads to glare problems.

[0007] Therefore, there is an urgent need for a system that can detect the light environment inside and outside the carriage in real time and dynamically adjust the window transmittance and interior lighting intensity to improve the visual comfort of passengers and enhance the safety of high-speed train operation. Summary of the invention

[0008] The purpose of the present invention is to address the deficiencies in the above-mentioned background technology and provide a light environment detection and adjustment system with real-time light detection and intelligent adjustment functions. Through comprehensive analysis and automatic adjustment of the light environment inside and outside the car, it can effectively alleviate the impact of glare on passengers and drivers, improve passenger comfort, and ensure the safety of high-speed train operation.

[0009] In order to achieve the above-mentioned object, the present invention provides an intelligent light environment detection and adjustment system for high-speed trains, including an optical illumination module, a light imaging camera module, a data processing module, a color-changing glass control module, and an interior lighting adjustment module;

[0010] The optical illumination module is arranged outside the vehicle window, and is used to detect the intensity and change of external light in real time, and transmit the collected external light data to the data processing module in real time;

[0011] The optical imaging camera module is arranged at multiple positions in the vehicle compartment, and is used to capture the light environment inside the vehicle compartment in real time, and generate a pseudo-color image to detect the high-brightness lighting conditions in a specific area in the vehicle compartment, and transmit the collected image data to the data processing module in real time;

[0012] The data processing module is used to receive and analyze the illumination data inside and outside the vehicle in real time, calculate the glare intensity in the passenger's field of view, and determine whether there is a glare problem in the vehicle. The data processing module sends instructions to the photochromic glass control module and the interior lighting adjustment module;

[0013] The color-changing glass control module is arranged on the vehicle window and is used to automatically adjust the light transmittance of the glass according to the external light data provided by the data processing module;

[0014] The in-vehicle lighting adjustment module is arranged inside the vehicle compartment and is used to dynamically adjust the brightness and color temperature of the in-vehicle lighting according to the analysis result of the data processing module.

[0015] Furthermore, the optical illumination module includes one or more optical illuminometers, which can capture dynamic changes in external illumination, including the intensity and angle of sunlight and the influence of shadows.

[0016] Furthermore, the optical imaging camera module includes a plurality of optical imaging cameras, and the optical imaging cameras have a high dynamic range function, are able to maintain the accuracy of illumination information in strong light and weak light environments, and generate pseudo-color images.

[0017] Furthermore, the data processing module calculates the glare intensity in the passenger's field of view through a lighting calculation model to determine whether there is a glare problem in the vehicle compartment.

[0018] Furthermore, the adjustment range of the photochromic glass controlled by the photochromic glass control module ranges from fully transparent to partially shading, ensuring that the light inside the vehicle compartment remains within an appropriate range.

[0019] Furthermore, the in-vehicle lighting adjustment module can automatically reduce the brightness of the in-vehicle lighting, or reduce the impact of glare by adding soft fill light.

[0020] The present invention also provides a method for detecting and adjusting the intelligent light environment of a high-speed train, which is applied to the intelligent light environment detection and adjustment system for a high-speed train as described above, and comprises the following steps:

[0021] S1, real-time detection of light intensity and angle changes outside the car window, real-time upload of external light data, real-time capture of light distribution inside the car, real-time generation of pseudo-color images and real-time upload;

[0022] S2, comprehensively considers the external lighting and the lighting conditions inside the car, and calculates the glare probability for each seat through the lighting calculation model. When glare that causes discomfort is found in the passenger's field of vision, an adjustment command is issued to change the light transmittance of the photochromic glass, as well as the brightness and color temperature of the interior lighting.

[0023] Furthermore, the illumination calculation model is a sunlight glare probability model, which is calculated based on the brightness data captured by the camera and the ambient light illumination, and the formula is as follows:

[0024]

[0025] Where DGP is the probability value of glare intensity, which is between 0 and 1. The higher the DGP value, the more severe the glare. s is the brightness of the glare source, measured by a light imaging camera, in cd / m 2 ; ω is the angle of view of the glare source in the passenger's field of vision, in sr; E υ is the ambient vertical illuminance, in lux; a and b are experimental fitting constants.

[0026] Furthermore, in S2, the transmittance of the photochromic glass is adjusted according to the calculated DGP value, and the adjustment formula is:

[0027] T=T max -κ1×DGP

[0028] Among them, T max is the maximum transmittance of the photochromic glass; κ1 is the adjustment coefficient, which depends on the response characteristics of the specific photochromic glass.

[0029] Furthermore, in S2, the interior lighting brightness is adjusted according to the calculated DGP value, and the adjustment formula is:

[0030] I=Imax ×(1-κ2×DGP)

[0031] Among them, I max is the maximum brightness of the interior lighting, in lux; κ2 is the adjustment coefficient.

[0032] The above scheme of the present invention has the following beneficial effects:

[0033] The intelligent light environment detection and adjustment system and method for high-speed trains provided by the present invention adopts a combination of optical illumination and light imaging camera to respectively detect the natural light outside the window and the light environment inside the carriage in real time. In particular, the light imaging camera has a high dynamic range (HDR) function, which can accurately capture the high-brightness area and potential glare source inside the carriage, and provide accurate light data for subsequent adjustment. This dual detection ensures that the changes in the light environment inside and outside the carriage can be fully perceived, especially when the external light changes drastically, the system can respond quickly and make corresponding adjustments;

[0034] The present invention adopts an intelligent data processing module based on the Daylight Glare Probability Model (DGP), which can dynamically calculate the degree of glare in the passenger's field of vision according to the detected light data, and promptly determine whether there is a glare problem. Through this real-time calculation, the system can accurately identify the glare source and respond quickly when the glare affects the visual comfort of passengers or drivers. Compared with a single light intensity detection, it can better improve visual comfort and ensure train driving safety.

[0035] The present invention realizes the function of automatically adjusting the light transmittance of the photochromic glass, and can dynamically adjust the transparency of the glass according to the external light intensity, thereby reducing the interference of the external strong light on the vision of the passengers in the car. At the same time, it can also adjust the brightness and color temperature of the lighting in the car according to the real-time analysis results, thereby ensuring that when the external light changes greatly, the light environment in the car is still uniform and soft, reducing the visual fatigue of the passengers, and ensuring that the passengers can enjoy a comfortable visual experience under different lighting conditions;

[0036] The present invention has the ability of real-time dynamic adjustment. Compared with the traditional dimming solution that relies on fixed modes, it can continuously and dynamically adjust the light environment according to the changes in the light conditions inside and outside the carriage. Therefore, it can effectively cope with the rapidly changing external environment during the operation of high-speed trains and ensure that the light problem will not have a negative impact on the vision of passengers and drivers.

[0037] Other beneficial effects of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic block diagram of the system of the present invention.

[0039] [Description of Reference Numerals]

[0040] 10-optical illumination module; 20-light imaging camera module; 30-data processing module; 40-color-changing glass control module; 50-interior lighting adjustment module. DETAILED DESCRIPTION

[0041] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0042] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein may be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein may be implemented independently of any other aspect, and two or more of these aspects may be combined in various ways. For example, any number of aspects described herein may be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein may be used to implement this device and / or practice this method.

[0043] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure, and the illustrations only show the components related to the present disclosure rather than the number, shape and size of the components in actual implementation. The type, quantity and proportion of each component in actual implementation may be changed at will, and the component layout type may also be more complicated. In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the aspects described can be practiced without these specific details.

[0044] like Figure 1 As shown, an embodiment of the present invention provides an intelligent light environment detection and adjustment system for a high-speed train, including an optical illumination module 10, an optical imaging camera module 20, a data processing module 30, a photochromic glass control module 40 and an interior lighting adjustment module 50.

[0045] In this embodiment, the optical illumination module 10 is installed outside the vehicle window to detect the intensity and changes of external light in real time. The optical illumination module 10 can be one or more optical illuminometers, which capture the dynamic changes of external light, including the intensity and angle of sunlight and the influence of shadows, and transmit the collected external light data to the data processing module 30 in real time.

[0046] In this embodiment, the light imaging camera module 20 is arranged at multiple positions in the car, especially within the passenger's field of view, to capture the light environment inside the car in real time. The light imaging camera module 20 can be a plurality of light imaging cameras, which have a high dynamic range (HDR) function, can maintain the accuracy of light information in both strong and weak light environments, and generate a pseudo-color image for detecting high-brightness light conditions in specific areas in the car. Similarly, it transmits the collected image data to the data processing module 30 in real time.

[0047] In this embodiment, the data processing module 30 is connected to the optical illumination module 10 and the optical imaging camera module 20 in communication, and can receive and analyze the illumination data inside and outside the car in real time. The data processing module 30 uses an illumination calculation model (such as DGP: Daylight Glare Probability) to calculate the glare intensity in the passenger's field of view and determine whether there is a glare problem in the car. The data processing module 30 also sends instructions to the color-changing glass control module 40 and the interior lighting adjustment module 50 in combination with the external light intensity and changes to dynamically adjust the light environment in the car.

[0048] In this embodiment, the photochromic glass control module 40 is installed on the vehicle window and is in communication connection with the data processing module 30. The photochromic glass control module 40 can automatically adjust the light transmittance of the glass according to the external light data provided by the data processing module 30 to reduce the impact of external strong light on the light environment in the vehicle. Among them, the adjustment range of the photochromic glass is from full transparency to partial light blocking, ensuring that the light inside the vehicle is kept within an appropriate range, especially when strong light is irradiated, which can effectively reduce glare.

[0049] In this embodiment, the interior lighting adjustment module 50 is arranged inside the vehicle and is in communication connection with the data processing module 30. The interior lighting adjustment module 50 dynamically adjusts the brightness and color temperature of the interior lighting according to the analysis result of the data processing module 30. When the external light is too strong or a specific area in the vehicle has high brightness, the interior lighting adjustment module 50 can automatically reduce the brightness of the interior lighting, or reduce the impact of glare by adding soft fill light.

[0050] As described above, the intelligent light environment detection and adjustment system for high-speed trains provided in this embodiment detects the light intensity and angle changes outside the window in real time through the optical illumination module 10, especially the intensity of sunlight and changes in reflected light when the high-speed train is running, and transmits the external light data to the data processing module 30 in real time. The light imaging camera module 20 captures the light distribution inside the car, generates a pseudo-color image and uploads it to the data processing module 30 in real time. The data processing module 30 receives the light data inside and outside the car, combines the external light and the light conditions inside the car, and calculates the glare probability of each seat. When it is found that there is glare that may cause discomfort in the passenger's field of view, the data processing module 30 will issue an adjustment instruction to the color-changing glass control module 40 and the interior lighting adjustment module 50, so as to adjust the light conditions in the car. The system introduces a dual detection scheme that combines light detection outside the window with light detection inside the car, ensuring comprehensive perception of the light environment inside and outside the car. It dynamically calculates and provides real-time feedback on the glare in the passenger's field of view through a specific algorithm, and can accurately detect and quickly respond to glare problems. It can also achieve intelligent adjustment of the photochromic glass and dynamic adjustment of the interior lighting, automatically respond to changes in external light, reduce the direct impact of strong light on the interior of the car, ensure that the light environment inside the car is uniform and soft, and reduce visual fatigue. Therefore, it can effectively improve the light environment management inside the high-speed train car, reduce the impact of glare on passengers and drivers, and improve the safety and comfort of operation.

[0051] It is worth mentioning that the system in this embodiment is capable of continuous optimization, and it can further predict future lighting changes and make adjustments in advance through long-term data accumulation and analysis, such as through deep learning models.

[0052] As a preferred implementation, the measurement range of the optical illuminance meter in this embodiment is: 0100,000lx, response time: ≤1 second; the resolution of the optical imaging camera is: at least 1080p, supporting HDR function, frame rate: 60 frames / second; the transmittance adjustment range of the photochromic glass is: 5% to 90%; the processing delay of the data processing module is: ≤0.1 second.

[0053] Based on the same inventive concept, this embodiment also provides a method for intelligent light environment detection and adjustment of a high-speed train, which specifically includes the following steps:

[0054] S1, real-time detection of light intensity and angle changes outside the car window, real-time upload of external light data, real-time capture of light distribution inside the car, real-time generation of pseudo-color images and real-time upload;

[0055] S2, comprehensively considers the external lighting and the lighting conditions inside the car, and calculates the glare probability of each seat through the lighting calculation model. When glare that may cause discomfort is found in the passenger's field of vision, an adjustment command is issued to change the transmittance of the photochromic glass, as well as the brightness and color temperature of the interior lighting.

[0056] In this embodiment, the illumination calculation model used is the Daylight Glare Probability (DGP) model. The DGP is calculated based on the brightness data captured by the camera and the ambient light illumination. The formula is as follows:

[0057]

[0058] Among them, DGP is the probability value of glare intensity, which is between 0 and 1. Generally, the higher the DGP value, the more severe the glare. The commonly used glare judgment criteria are:

[0059] DGP<0.35: no obvious glare; 0.35≤DGP<0.45: slight glare; 0.45≤DGP<0.55: moderate glare; DGP≥0.55: strong glare.

[0060] Among them, L s is the brightness of the glare source, measured by a light imaging camera, in cd / m 2 , the optical imaging camera can capture the high-brightness area inside the car and obtain the brightness value of the high-brightness light source in the field of view; ω is the viewing angle of the glare source in the passenger's field of view, the unit is sr (solid angle), and this value can also be calculated from the image captured by the optical imaging camera; E υ is the ambient vertical illuminance in lux, which is measured in real time by an optical illuminance meter installed on the outside of the car window. This value reflects the intensity of external light, especially the impact of sunlight on the interior of the car. a and b are experimental fitting constants, which are usually determined according to environmental conditions or through experiments. For sunlight glare, the commonly used empirical values ​​are: a=0.16, b=0.50.

[0061] In S2, in order to dynamically adjust the transmittance T of the photochromic glass and the brightness I of the interior lighting, the data processing module will adjust these parameters according to the calculated DGP value. For the transmittance of the photochromic glass, the adjustment formula is:

[0062] T=T max -κ1×DGP

[0063] Among them, T maxThe maximum light transmittance of the photochromic glass is usually 90%; the κ1 adjustment coefficient depends on the response characteristics of the specific photochromic glass, and usually ranges from 0.5 to 1.0. When the DGP value is higher, the light transmittance T will decrease to reduce the natural light entering the car, thereby reducing glare.

[0064] For the interior lighting brightness, the adjustment formula is:

[0065] I=I max ×(1-κ2×DGP)

[0066] Among them, I max is the maximum brightness of the interior lighting, in lux, which depends on the design requirements of the high-speed train; k2 is the adjustment coefficient, which usually ranges from 0.5 to 1.0. When the DGP value increases, the brightness of the interior lighting will gradually decrease to avoid excessive light intensity in the cabin causing discomfort to passengers. At the same time, if the DGP value is low, the brightness of the interior lighting can be appropriately increased to provide a comfortable light environment.

[0067] Based on the above method, the system's data processing module can effectively calculate the glare intensity, and automatically adjust the photochromic glass and interior lighting according to the glare situation, optimize the light environment inside the car, and continuously adjust the photochromic glass and interior lighting through real-time data feedback to ensure that the light environment always remains within a comfortable range.

[0068] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An intelligent light environment detection and adjustment system for high-speed trains, characterized in that: It includes an optical illumination module, an optical imaging camera module, a data processing module, a photochromic glass control module and an interior lighting adjustment module; The optical illumination module is arranged outside the vehicle window, and is used to detect the intensity and change of external light in real time, and transmit the collected external light data to the data processing module in real time; The optical imaging camera module is arranged at multiple positions in the vehicle compartment, and is used to capture the light environment inside the vehicle compartment in real time, and generate a pseudo-color image to detect the high-brightness lighting conditions in a specific area in the vehicle compartment, and transmit the collected image data to the data processing module in real time; The data processing module is used to receive and analyze the illumination data inside and outside the vehicle in real time, calculate the glare intensity in the passenger's field of view, and determine whether there is a glare problem in the vehicle. The data processing module sends instructions to the photochromic glass control module and the interior lighting adjustment module; The color-changing glass control module is arranged on the vehicle window and is used to automatically adjust the light transmittance of the glass according to the external light data provided by the data processing module; The in-vehicle lighting adjustment module is arranged inside the vehicle compartment and is used to dynamically adjust the brightness and color temperature of the in-vehicle lighting according to the analysis result of the data processing module.

2. The intelligent light environment detection and adjustment system for high-speed trains according to claim 1 is characterized in that: The optical illumination module includes one or more optical illuminometers, which can capture dynamic changes in external illumination, including the intensity and angle of sunlight and the influence of shadows.

3. The intelligent light environment detection and adjustment system for high-speed trains according to claim 1 is characterized in that: The optical imaging camera module includes a plurality of optical imaging cameras, and the optical imaging cameras have a high dynamic range function, can maintain the accuracy of illumination information in strong light and weak light environments, and generate pseudo-color images.

4. The intelligent light environment detection and adjustment system for high-speed trains according to claim 1 is characterized in that: The data processing module calculates the glare intensity in the passenger's field of view through a lighting calculation model to determine whether there is a glare problem in the vehicle compartment.

5. The intelligent light environment detection and adjustment system for high-speed trains according to claim 1 is characterized in that: The adjustment range of the photochromic glass controlled by the photochromic glass control module ranges from full transparency to partial shading, ensuring that the light inside the vehicle compartment remains within an appropriate range.

6. The intelligent light environment detection and adjustment system for high-speed trains according to claim 1, characterized in that: The in-vehicle lighting adjustment module can automatically reduce the brightness of the in-vehicle lighting, or reduce the impact of glare by adding soft fill light.

7. A method for detecting and adjusting the intelligent light environment of a high-speed train, applied to a system for detecting and adjusting the intelligent light environment of a high-speed train as claimed in any one of claims 1 to 6, characterized in that: The steps include: S1, real-time detection of light intensity and angle changes outside the car window, real-time upload of external light data, real-time capture of light distribution inside the car, real-time generation of pseudo-color images and real-time upload; S2, comprehensively considers the external lighting and the lighting conditions inside the car, and calculates the glare probability for each seat through the lighting calculation model. When glare that causes discomfort is found in the passenger's field of vision, an adjustment command is issued to change the light transmittance of the photochromic glass, as well as the brightness and color temperature of the interior lighting.

8. The intelligent light environment detection and adjustment method for high-speed trains according to claim 7 is characterized in that: The illumination calculation model is a sunlight glare probability model, which is calculated based on the brightness data captured by the camera and the ambient light illumination. The formula is as follows: Where DGP is the probability value of glare intensity, which is between 0 and 1. The higher the DGP value, the more severe the glare. s is the brightness of the glare source, measured by a light imaging camera, in cd / m 2 ; ω is the angle of view of the glare source in the passenger's field of vision, in sr; E ν is the ambient vertical illuminance, in lux; a and b are experimental fitting constants.

9. The intelligent light environment detection and adjustment method for high-speed trains according to claim 8, characterized in that: In S2, the transmittance of the photochromic glass is adjusted according to the calculated DGP value, and the adjustment formula is: T=T max -κ1×DGP Among them, T max is the maximum transmittance of the photochromic glass; κ1 is the adjustment coefficient, which depends on the response characteristics of the specific photochromic glass.

10. The intelligent light environment detection and adjustment method for high-speed trains according to claim 9, characterized in that: In S2, the interior lighting brightness is adjusted according to the calculated DGP value, and the adjustment formula is: I=I max ×(1-κ2×DGP) Among them, I max is the maximum brightness of the interior lighting, in lux; κ2 is the adjustment coefficient.

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