Airplane cockpit windshield automatic dimming system and method

Abstract

The invention relates to an automatic dimming system and method for a windshield of an aircraft cockpit. The system comprises a photosensitive sensor system, a human eye monitoring device, an airborne computer, a control circuit and an electrochromic windshield. The photosensitive sensor system is configured to detect windshield illumination in real time and transmit the windshield illumination to the airborne computer, a signal processing module in the airborne computer is configured to convert an illumination signal into illumination data, and a data processing module is configured to compare and fit the illumination data with a dimming scheme database to determine a preliminary dimming scheme. The circuit control module is configured to output a driving signal to the control circuit according to the preliminary dimming scheme, and voltage control over the electrochromic windshield glass is achieved by adjusting a variable resistor in the control circuit; the human eye monitoring device is configured to monitor eye physiological feature data of a pilot, and the data processing module is further configured to finely adjust the preliminary dimming scheme to determine a final dimming scheme when the eye physiological feature data exceeds a threshold value.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft cockpit design, and in particular to an aircraft cockpit windshield automatic dimming system and method. Background Art

[0002] Aircraft operations involve a wide range of external lighting environments. Typical flight scenarios involve different levels of light and dark. Other representative environments include rapid changes in lighting conditions such as exposure, thunderstorms, and cloud penetration.

[0003] Improper or unstable lighting environment will directly affect the visual ergonomics of the crew, which may cause fatigue and misreading of pilots, leading to human errors. Therefore, the light transmission effect of the cockpit windshield is designed so that the light can be adjusted to an appropriate level before entering the cockpit through the windshield, which is conducive to ensuring a scientific and reasonable light environment inside the cockpit and relieving the visual pressure of the crew. At the same time, after the adjustment, the adjustment range of the internal lighting of the cockpit will be greatly reduced, which is conducive to optimizing the human-machine efficiency of the cockpit.

[0004] The principle of electrochromic (EC) glass is that the optical properties of the material (reflectivity, transmittance, absorptivity, etc.) undergo stable and reversible color changes under the action of an external electric field, which is manifested in appearance as reversible changes in color and transparency. Typical electrochromic glass has a seven-layer structure, from top to bottom: glass or transparent substrate material, transparent conductive layer, electrochromic layer, electrolyte layer, ion storage layer, transparent conductive layer, glass or transparent substrate material. At present, color-changing dimmer glass is mainly used in fields such as automobiles and construction, and has not yet been used in aircraft cockpits. The light environment in the aircraft cockpit still relies heavily on adaptive adjustment of the interior of the cockpit according to the external lighting environment to achieve a balance. The adjustment means are single and low in precision, and the effect is relatively limited. Summary of the invention

[0005] An object of the present invention is to provide an automatic dimming system and method for an aircraft cockpit windshield, which can overcome the deficiencies of the prior art, can achieve effective automatic adjustment of the transmittance and color of the aircraft cockpit windshield glass, and can achieve dynamic optimization of the dimming scheme.

[0006] The above objects of the present invention are achieved by an automatic dimming system for windshields in an aircraft cockpit, the automatic dimming system for windshields in an aircraft cockpit comprising a photosensitive sensor system, a human eye monitoring device, an onboard computer, a control circuit, and an electrochromic windshield, wherein the onboard computer comprises a signal processing module, a data processing module, a dimming scheme database, and a circuit control module;

[0007] Wherein, the photosensitive sensor system is configured to detect the illuminance of the windshield in real time and transmit the illuminance signal to the onboard computer, the signal processing module in the onboard computer is configured to convert the illuminance signal into illuminance data, and then transmit the illuminance data to the data processing module, the data processing module is configured to compare and fit the illuminance data with the dimming scheme database to determine a preliminary dimming scheme, the circuit control module is configured to output a driving signal to the control circuit according to the preliminary dimming scheme, and realize voltage control of the electrochromic windshield by adjusting the variable resistor in the control circuit, so as to implement the preliminary dimming scheme on the windshield of the aircraft cockpit;

[0008] Wherein, the human eye monitoring device is configured to monitor the pilot's eye physiological characteristic data, and the data processing module is also configured to, when the eye physiological characteristic data exceeds a threshold, fine-tune the preliminary dimming scheme to determine a final dimming scheme, and implement the final dimming scheme on the aircraft cockpit windshield.

[0009] According to the above technical scheme, the aircraft cockpit windshield automatic dimming system of the present invention can achieve the following beneficial technical effects: it can realize effective automatic adjustment of the transmittance and color of the aircraft cockpit windshield glass, and can realize dynamic optimization of the dimming scheme.

[0010] Preferably, the aircraft cockpit windshield is divided into multiple areas, the photosensor system includes multiple corresponding photosensors, each photosensor is used to detect the illumination of one area among the multiple areas in real time, and the illumination data includes an illumination distribution matrix.

[0011] According to the above technical scheme, the aircraft cockpit windshield automatic dimming system of the present invention can achieve the following beneficial technical effects: the windshield as a whole is divided into a set of discrete areas, and differentiated dimming is performed according to the unit's demand for light in different directions, and this differentiated dimming is achieved through voltage control of the conductive layer.

[0012] Preferably, the aircraft cockpit windshield automatic dimming system also includes an automatic dimming control switch for turning on / off the automatic dimming function.

[0013] According to the above technical solution, the aircraft cockpit windshield automatic dimming system of the present invention can achieve the following beneficial technical effects: it can conveniently switch between automatic and manual modes to achieve variable dimming of the windshield.

[0014] Preferably, the eye physiological characteristic data includes at least one of the following: pupil size, blinking frequency, eyeball rotation amplitude, and tear gland secretion volume.

[0015] According to the above technical solution, the aircraft cockpit windshield automatic dimming system of the present invention can achieve the following beneficial technical effects: by monitoring appropriate eye physiological characteristic data, the dynamic optimization of the dimming solution can be better achieved.

[0016] Preferably, an intermediate gradient zone is provided between two adjacent areas of the aircraft cockpit windshield, for achieving a uniform transition between two adjacent areas with different light transmittances.

[0017] According to the above technical solution, the aircraft cockpit windshield automatic dimming system of the present invention can achieve the following beneficial technical effects: it can achieve uniform and soft transition between two adjacent areas with different light transmittances.

[0018] Preferably, the fitting adopts a least square fitting method.

[0019] According to the above technical solution, the aircraft cockpit windshield automatic dimming system of the present invention can achieve the following beneficial technical effects: through a suitable fitting method, it can better realize the effective automatic adjustment of the light transmittance and color of the aircraft cockpit windshield glass.

[0020] The above object of the present invention is also achieved by an automatic dimming method for an aircraft cockpit windshield, the automatic dimming method for an aircraft cockpit windshield comprising:

[0021] Use a photosensitive sensor system to detect windshield illumination in real time;

[0022] Converting the illumination signal into illumination data;

[0023] Comparing and fitting the illumination data with a dimming solution database to determine a preliminary dimming solution;

[0024] Outputting a driving signal to a control circuit according to the preliminary dimming scheme, and controlling the voltage of the electrochromic windshield by adjusting a variable resistor in the control circuit, so as to implement the preliminary dimming scheme on the windshield of the aircraft cockpit;

[0025] Human eye monitoring equipment is used to monitor the pilot's eye physiological characteristic data. When the eye physiological characteristic data exceeds a threshold, the preliminary dimming solution is fine-tuned to determine a final dimming solution, and the final dimming solution is implemented on the aircraft cockpit windshield.

[0026] According to the above technical scheme, the automatic dimming method of the aircraft cockpit windshield of the present invention can achieve the following beneficial technical effects: it can realize effective automatic adjustment of the transmittance and color of the aircraft cockpit windshield glass, and can realize dynamic optimization of the dimming scheme.

[0027] Preferably, the aircraft cockpit windshield is divided into multiple areas, the photosensor system includes multiple corresponding photosensors, each photosensor is used to detect the illumination of one area among the multiple areas in real time, and the illumination data includes an illumination distribution matrix.

[0028] According to the above technical scheme, the automatic dimming method of the aircraft cockpit windshield of the present invention can achieve the following beneficial technical effects: the windshield as a whole is divided into a set of discrete areas, and differentiated dimming is performed according to the unit's demand for light in different directions, and this differentiated dimming is achieved through voltage control of the conductive layer.

[0029] Preferably, the eye physiological characteristic data includes at least one of the following: pupil size, blinking frequency, eyeball rotation amplitude, and tear gland secretion volume.

[0030] According to the above technical scheme, the automatic dimming method of the aircraft cockpit windshield of the present invention can achieve the following beneficial technical effects: by monitoring appropriate eye physiological characteristic data, the dynamic optimization of the dimming scheme can be better achieved.

[0031] Preferably, an intermediate gradient zone is provided between two adjacent areas of the aircraft cockpit windshield, for achieving a uniform transition between two adjacent areas with different light transmittances.

[0032] According to the above technical solution, the automatic dimming method for the aircraft cockpit windshield of the present invention can achieve the following beneficial technical effects: a uniform and soft transition can be achieved between two adjacent areas with different light transmittances.

[0033] Preferably, the fitting adopts a least square fitting method.

[0034] According to the above technical scheme, the aircraft cockpit windshield automatic dimming method of the present invention can achieve the following beneficial technical effects: through a suitable fitting method, the effective automatic adjustment of the light transmittance and color of the aircraft cockpit windshield can be better achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The figure is a schematic diagram of the composition of an automatic windshield dimming system for an aircraft cockpit according to an embodiment of the present invention.

[0036] Figure 2 The diagram is a schematic structural diagram of an electrochromic windshield glass in an automatic windshield dimming system for an aircraft cockpit according to an embodiment of the present invention.

[0037] Figure 3 The diagram is a schematic diagram of the arrangement of photosensors in an automatic dimming system for windshields in an aircraft cockpit according to an embodiment of the present invention.

[0038] Figure 4The present invention is a flowchart of an automatic windshield dimming method for an aircraft cockpit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The specific embodiments of the present invention will be described below. It should be noted that in the specific description of these embodiments, in order to be concise and clear, this specification cannot provide a detailed description of all the features of the actual embodiments. It should be understood that in the actual implementation of any embodiment, just as in the process of any engineering project or design project, in order to achieve the specific goals of the developer and to meet system-related or business-related restrictions, various specific decisions are often made, and this will also change from one embodiment to another. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in the field related to the content disclosed by the present invention, some changes in design, manufacturing or production based on the technical content disclosed in this disclosure are just conventional technical means, and should not be understood as insufficient content of this disclosure.

[0040] Unless otherwise defined, the technical or scientific terms used in the claims and the specification shall have the usual meaning understood by persons with ordinary skills in the technical field to which the invention belongs. The words "first", "second" and similar words used in the patent application specification and the claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limitation, but indicate the existence of at least one. "Include" or "comprises" and other similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalent elements, and do not exclude other elements or objects. "Connected" or "connected" and other similar words are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0041] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0042] Figure 1 The figure is a schematic diagram of the composition of an automatic windshield dimming system for an aircraft cockpit according to an embodiment of the present invention. Figure 2 The diagram is a schematic structural diagram of an electrochromic windshield glass in an automatic windshield dimming system for an aircraft cockpit according to an embodiment of the present invention. Figure 3The diagram is a schematic diagram of the arrangement of photosensors in an automatic dimming system for windshields in an aircraft cockpit according to an embodiment of the present invention. Figure 4 The present invention is a flowchart of an automatic windshield dimming method for an aircraft cockpit according to an embodiment of the present invention.

[0043] like Figures 1 to 4 As shown, according to one embodiment of the present invention, an automatic dimming system for windshield in an aircraft cockpit includes a photosensitive sensor system, a human eye monitoring device, an onboard computer, a control circuit, and an electrochromic windshield, wherein the onboard computer includes a signal processing module, a data processing module, a dimming solution database, and a circuit control module;

[0044] The photosensitive sensor system is configured to detect the illuminance of the windshield in real time and transmit the illuminance signal to the onboard computer, the signal processing module in the onboard computer is configured to convert the illuminance signal into illuminance data (for example, by analog-to-digital conversion), and then transmit the illuminance data to the data processing module, the data processing module is configured to compare and fit the illuminance data with the dimming solution database to determine a preliminary dimming solution, the circuit control module is configured to output a driving signal to the control circuit according to the preliminary dimming solution, and realize voltage control of the electrochromic windshield by adjusting the variable resistor in the control circuit, so as to implement the preliminary dimming solution on the windshield of the aircraft cockpit;

[0045] Among them, the human eye monitoring equipment is configured to monitor the pilot's eye physiological characteristics data, and the data processing module is also configured to, when the eye physiological characteristics data exceeds a threshold, fine-tune the preliminary dimming plan to determine the final dimming plan, and implement the final dimming plan on the aircraft cockpit windshield.

[0046] According to the above technical scheme, the aircraft cockpit windshield automatic dimming system of the present invention can achieve the following beneficial technical effects: it can realize effective automatic adjustment of the transmittance and color of the aircraft cockpit windshield glass, and can realize dynamic optimization of the dimming scheme.

[0047] Specifically, the present invention designs a negative feedback adjustment method based on a dimming scheme database. The open-loop path generates and implements a preliminary dimming scheme by comparing and fitting the illumination data with the dimming scheme database, thereby realizing effective automatic adjustment of the transmittance and color of the aircraft cockpit windshield. The closed-loop path monitors the eye physiological characteristic data (as a negative feedback source) after the implementation of the scheme, and then compares it with the physiological characteristic database (whether it exceeds the threshold), performs fine-tuning when necessary, and obtains the final dimming scheme, thereby realizing dynamic optimization of the dimming scheme, thereby reducing the adverse effects of natural light passing through the windshield on the changes in the internal light environment of the aircraft cockpit without increasing the operating load of the unit.

[0048] As the object of system regulation, the two main windshields and two side windshields of the aircraft are all made of electrochromic glass, and their structure is as follows: Figure 2 As shown, a typical seven-layer structure is adopted, from left to right, glass or transparent substrate material, transparent conductive layer, electrochromic layer, electrolyte layer, ion storage layer, transparent conductive layer, glass or transparent substrate material. The outermost two layers can be collectively referred to as ordinary layers, the second outer two layers can be collectively referred to as conductive layers, and the three layers in the middle can be collectively referred to as color-changing layers. In principle, by applying different voltages to the conductive layer, the color and light transmittance of the color-changing layer can be changed within a range, and this change is continuous.

[0049] In some embodiments, Figure 3 As shown, the cockpit windshield of the aircraft is divided into multiple areas, and the photosensitive sensor system includes multiple corresponding photosensitive sensors, each of which is used to detect the illumination of one area in the multiple areas in real time, and the illumination data includes an illumination distribution matrix. According to the above technical scheme, the automatic dimming system of the cockpit windshield of the aircraft of the present invention can achieve the following beneficial technical effects: the windshield is divided into a set of discrete areas as a whole, and differential dimming is performed according to the light requirements of the unit in different directions, and this differential dimming is achieved by voltage control of the conductive layer.

[0050] Preferably, the photosensitive sensor system is a sensor array composed of a plurality of photosensitive sensors, and the layout scheme is as follows: Figure 3 As shown, the photosensitive sensors are evenly arranged on the four corners of the main and side windshields of the aircraft to detect the illumination of the external light on the windshields in different areas in real time, and transmit the illumination signal to the onboard computer through cables.

[0051] In some embodiments, Figure 1 As shown, the aircraft cockpit windshield automatic dimming system also includes an automatic dimming control switch for turning on / off the automatic dimming function. According to the above technical solution, the aircraft cockpit windshield automatic dimming system of the present invention can achieve the following beneficial technical effects: it can conveniently switch between automatic and manual modes to achieve variable dimming of the windshield.

[0052] In some embodiments, the eye physiological characteristic data includes at least one of the following: pupil size, blinking frequency, eyeball rotation amplitude, and tear gland secretion volume. According to the above technical solution, the aircraft cockpit windshield automatic dimming system of the present invention can achieve the following beneficial technical effects: by monitoring appropriate eye physiological characteristic data, the dynamic optimization of the dimming solution can be better achieved.

[0053] Preferably, the human eye monitoring equipment consists of a camera and an eye tracker in the cockpit, which is used to monitor the pilot's eye physiological characteristics data, including pupil size, blinking frequency, eye movement amplitude, tear gland secretion volume, etc., and transmit the data to the onboard computer.

[0054] Taking pupil size as an example, when the pupil size data is greater than the upper limit of the pupil size threshold, it indicates that the windshield illumination is too low, and the preliminary dimming plan is fine-tuned to slightly increase the windshield illumination to determine the final dimming plan, and the final dimming plan is implemented on the aircraft cockpit windshield; when the pupil size data is less than the lower limit of the pupil size threshold, it indicates that the windshield illumination is too high, and the preliminary dimming plan is fine-tuned to slightly reduce the windshield illumination to determine the final dimming plan, and the final dimming plan is implemented on the aircraft cockpit windshield.

[0055] The onboard computer is the hub for signal processing and dimming solution formulation, and mainly includes signal processing module, data processing module, dimming solution database, circuit control module, etc.

[0056] The signal processing module is used to decode and convert the signals input from the photosensitive sensor and the human eye monitoring device, generate standard data with a unified format, and use it as input for downstream programs and store it in the onboard computer.

[0057] The dimming scheme database is a calibrated dimming scheme stored in a computer. First, through simulation experiments, the dimming mode that the unit prefers most and the normal threshold of the physiological characteristics of the human eye under different illumination environments are determined. Since the unit has different needs and adaptability to light from different directions, the transmittance of the scheme may show differences in different areas of the windshield, so the scheme needs to be processed. Finally, generate the illumination distribution matrix of each windshield area representing the overall light environment, and the transmittance distribution matrix of each windshield area representing the overall dimming scheme. Finally, establish a mapping between the illumination distribution matrix, the dimming scheme and the physiological data of the human eye. The collection is the dimming scheme database.

[0058] The data processing module compares the actual illumination distribution matrix input by the signal processing module with the set of calibrated illumination distribution matrices in the database, finds the closest existing matrix in the database, and determines the dimming scheme corresponding to the matrix as the preliminary dimming scheme.

[0059] The circuit control module calculates the voltage distribution of the conductive layer of the windshield according to the dimming scheme and transmits the driving signal to the control circuit.

[0060] The control circuit is responsible for applying voltage to the conductive layer of the windshield according to the voltage drive signal, adjusting the corresponding area of ​​the electrochromic glass to the target color and transmittance, and achieving continuous voltage drop distribution through the use of variable resistors, forming a soft and smooth transition between windshield areas of different colors and transmittances.

[0061] After implementing the preliminary dimming plan, the data processing module compares the real-time physiological characteristic data transmitted by the human eye monitoring device with the normal threshold in the database. If the threshold is exceeded, the overall transmittance of the plan is fine-tuned. The final dimming plan is achieved through this closed-loop control and implemented on the aircraft cockpit windshield.

[0062] In summary, through the above-mentioned aircraft cockpit windshield automatic dimming system, the cockpit lighting can be automatically closed-loop controlled according to the internal and external environment, the transmittance and color of the aircraft cockpit windshield can be effectively and automatically adjusted, and the dimming scheme can be dynamically optimized.

[0063] In some embodiments, an intermediate gradient zone is provided between two adjacent areas of the aircraft cockpit windshield, for achieving a uniform transition between two adjacent areas with different light transmittances. According to the above technical solution, the aircraft cockpit windshield automatic dimming system of the present invention can achieve the following beneficial technical effects: a uniform and soft transition can be achieved between two adjacent areas with different light transmittances.

[0064] In some embodiments, the fitting adopts the least square fitting method. According to the above technical solution, the aircraft cockpit windshield automatic dimming system of the present invention can achieve the following beneficial technical effects: through a suitable fitting method, the effective automatic adjustment of the light transmittance and color of the aircraft cockpit windshield can be better achieved.

[0065] like Figures 1 to 4 As shown, according to one embodiment of the present invention, a method for automatically dimming an aircraft cockpit windshield includes:

[0066] Use a photosensitive sensor system to detect windshield illumination in real time;

[0067] Converting the illumination signal into illumination data;

[0068] Compare and fit the illumination data with the dimming solution database to determine the preliminary dimming solution;

[0069] Outputting a driving signal to a control circuit according to the preliminary dimming scheme, and realizing voltage control of the electrochromic windshield by adjusting a variable resistor in the control circuit, so as to implement the preliminary dimming scheme on the windshield of the aircraft cockpit;

[0070] Human eye monitoring equipment is used to monitor the pilot's eye physiological characteristics data. When the eye physiological characteristics data exceeds the threshold, the preliminary dimming plan is fine-tuned to determine the final dimming plan, and the final dimming plan is implemented on the aircraft cockpit windshield.

[0071] According to the above technical scheme, the automatic dimming method of the aircraft cockpit windshield of the present invention can achieve the following beneficial technical effects: it can realize effective automatic adjustment of the transmittance and color of the aircraft cockpit windshield glass, and can realize dynamic optimization of the dimming scheme.

[0072] The above describes the specific embodiments of the present invention, but those skilled in the art will understand that the above specific embodiments do not constitute a limitation of the present invention. Those skilled in the art can make various modifications based on the above disclosure without exceeding the scope of the present invention.

Claims

1. An automatic dimming system for windshields in an aircraft cockpit, comprising a photosensitive sensor system, a human eye monitoring device, an onboard computer, a control circuit, and an electrochromic windshield, wherein: The onboard computer includes a signal processing module, a data processing module, a dimming solution database, and a circuit control module; Wherein, the photosensitive sensor system is configured to detect the illuminance of the windshield in real time and transmit the illuminance signal to the onboard computer, the signal processing module in the onboard computer is configured to convert the illuminance signal into illuminance data, and then transmit the illuminance data to the data processing module, the data processing module is configured to compare and fit the illuminance data with the dimming scheme database to determine a preliminary dimming scheme, the circuit control module is configured to output a driving signal to the control circuit according to the preliminary dimming scheme, and realize voltage control of the electrochromic windshield by adjusting the variable resistor in the control circuit, so as to implement the preliminary dimming scheme on the windshield of the aircraft cockpit; Wherein, the human eye monitoring device is configured to monitor the pilot's eye physiological characteristic data, and the data processing module is also configured to, when the eye physiological characteristic data exceeds a threshold, fine-tune the preliminary dimming scheme to determine a final dimming scheme, and implement the final dimming scheme on the aircraft cockpit windshield.

2. The aircraft cockpit windshield automatic dimming system according to claim 1, characterized in that: The aircraft cockpit windshield is divided into multiple areas, the photosensitive sensor system includes multiple corresponding photosensitive sensors, each photosensitive sensor is used to detect the illumination of one area of ​​the multiple areas in real time, and the illumination data includes an illumination distribution matrix.

3. The aircraft cockpit windshield automatic dimming system according to claim 1, characterized in that: The aircraft cockpit windshield automatic dimming system also includes an automatic dimming control switch for turning on / off the automatic dimming function.

4. The aircraft cockpit windshield automatic dimming system according to claim 1, characterized in that: The eye physiological characteristic data includes at least one of the following: pupil size, blinking frequency, eyeball rotation amplitude, and tear gland secretion volume.

5. The aircraft cockpit windshield automatic dimming system according to claim 2, characterized in that: An intermediate gradient zone is arranged between two adjacent areas of the aircraft cockpit windshield, so as to realize a uniform transition between the two adjacent areas with different light transmittances.

6. The aircraft cockpit windshield automatic dimming system according to claim 1, characterized in that: The fitting adopts the least square fitting method.

7. A method for automatically dimming an aircraft cockpit windshield, comprising: Use a photosensitive sensor system to detect windshield illumination in real time; Converting the illumination signal into illumination data; Comparing and fitting the illumination data with a dimming solution database to determine a preliminary dimming solution; Outputting a driving signal to a control circuit according to the preliminary dimming scheme, and controlling the voltage of the electrochromic windshield by adjusting a variable resistor in the control circuit, so as to implement the preliminary dimming scheme on the windshield of the aircraft cockpit; Human eye monitoring equipment is used to monitor the pilot's eye physiological characteristic data. When the eye physiological characteristic data exceeds a threshold, the preliminary dimming solution is fine-tuned to determine a final dimming solution, and the final dimming solution is implemented on the aircraft cockpit windshield.

8. The method for automatically dimming the windshield in the cockpit of an aircraft as claimed in claim 7, characterized in that: The aircraft cockpit windshield is divided into multiple areas, the photosensitive sensor system includes multiple corresponding photosensitive sensors, each photosensitive sensor is used to detect the illumination of one area of ​​the multiple areas in real time, and the illumination data includes an illumination distribution matrix.

9. The automatic dimming method for aircraft cockpit windshield according to claim 7, characterized in that: The eye physiological characteristic data includes at least one of the following: pupil size, blinking frequency, eyeball rotation amplitude, and tear gland secretion volume.

10. The automatic dimming method for aircraft cockpit windshield according to claim 8, characterized in that: An intermediate gradient zone is arranged between two adjacent areas of the aircraft cockpit windshield, so as to realize a uniform transition between the two adjacent areas with different light transmittances.

11. The method for automatically dimming the windshield in an aircraft cockpit as claimed in claim 7, characterized in that: The fitting adopts the least square fitting method.

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