Light adjusting system and method and automobile

Abstract

The invention relates to the technical field of crossing of intelligent cabins and automobile electronics, and discloses a light adjusting system and method and an automobile, the system comprises a living body detection module, a domain controller and a display screen of a display terminal, the domain controller comprises a central controller, a first driving circuit and a second driving circuit, and the display screen comprises a dimming layer and a light guiding control layer. Living body information in an automobile is obtained through the living body detection module, the central controller generates a first control instruction and a second control instruction based on the living body information, the first driving circuit adjusts transmission light of the light guiding control layer to be switched between a scattering state and a transmission state based on the first control instruction, and the second driving circuit controls the light guiding control layer to be switched between a scattering state and a transmission state based on the second control instruction. The angle of the transmitted light of the dimming layer is adjusted so as to adjust the visual angle range of the display screen of the display terminal, and the first driving circuit and the second driving circuit can be cooperated to adjust the visual angle range of the display screen so as to improve the peep-proof effect of the display screen.

Description

Technical Field

[0001] This application relates to the field of smart cockpit and automotive electronics technology, and in particular to a light adjustment system, method and vehicle. Background Technology

[0002] Currently, privacy settings for car displays are typically achieved through physical privacy films based on micro-louver optical technology, or by controlling the arrangement of liquid crystal molecules in the display screen using an electric field to switch the light transmittance. However, physical privacy films have a fixed light transmission angle, which limits the viewing angle of the display screen. Furthermore, the liquid crystal molecules in the display screen are easily affected by strong light, resulting in poor fogging effect under strong light, which cannot effectively block side peeping and reduces the privacy effect of the display screen. Summary of the Invention

[0003] To address the aforementioned technical problems, embodiments of this application provide a light adjustment system, method, and vehicle capable of adjusting the viewing angle range of a display screen to enhance its privacy protection effect.

[0004] To address the aforementioned technical problems, the embodiments of this application provide the following technical solutions: In a first aspect, embodiments of this application provide a light adjustment system for use in automobiles. The system includes: a liveness detection module, a domain controller, and a display screen of a display terminal. The domain controller includes a central controller, a first driving circuit, and a second driving circuit. The display screen includes a dimming layer and a light guiding control layer. The liveness detection module, connected to the central controller, is used to acquire liveness information inside the vehicle and send the liveness information to the central controller. The central controller is connected to the liveness detection module, the first drive circuit, and the second drive circuit. It is used to generate control commands based on liveness information. The control commands include a first control command and a second control command. The first driving circuit, connected to the central controller and the light guiding control layer, is used to adjust the transmitted light of the light guiding control layer to switch between a scattering state and a transmission state based on the first control command, so as to adjust the display screen of the display terminal to switch between a fogged state and a transparent state. The second driving circuit, connected to the central controller and the dimming layer, is used to adjust the angle of light transmitted through the dimming layer based on the second control command, so as to adjust the viewing angle range of the display screen of the display terminal.

[0005] In some embodiments, the liveness detection module includes radar, auxiliary sensors, and a signal processing unit; The radar, connected to the signal processing unit, is used to acquire vital sign information inside the vehicle and send the vital sign information to the signal processing unit. Auxiliary sensors and a signal processing unit are used to monitor the motion state of the radar to obtain vibration information of the vehicle and send the vibration information of the vehicle to the signal processing unit. The signal processing unit, connected to the radar, auxiliary sensors, and central controller, is used to correct vital sign information based on the vehicle's vibration information to obtain liveness information, and then send the liveness information to the central controller.

[0006] In some embodiments, the central controller is specifically used for: Feature extraction is performed on in vivo information to obtain the physiological signals of the in vivo organism; Based on physiological signals, determine the location and identity of a living organism; Control commands are generated based on the location and identity of the living organism.

[0007] In some embodiments, physiological signals include respiratory signal values ​​and heart rate signal values, and the central controller is specifically used for: Calculate the liveness confidence score based on respiratory signal values ​​and heartbeat signal values; If the liveness confidence score is less than the confidence threshold, then it is determined that there is no live person in the current car; If the confidence level of the living person is greater than or equal to the confidence threshold, the identity of the living person is determined based on the frequency corresponding to the respiratory signal, and the location of the living person is determined based on a preset algorithm.

[0008] In some embodiments, the location of the living person includes the driver's seat, the front passenger seat, and the rear seat; the identity of the living person includes an adult and a child; the first control command includes a first state adjustment command and a second state adjustment command; and the central controller is specifically used for: If it is determined that there is an adult in the driver's seat and no one in the front passenger seat or the back seat, then the first state adjustment command is generated. If it is determined that there is an adult in the front passenger seat and no one in the back seat, then the first state adjustment command is generated. If it is determined that there is a child in the back seat, a second state adjustment command is generated.

[0009] In some embodiments, the first driving circuit includes electrodes connected to the light guiding control layer, and the first driving circuit is specifically used for: If the first control command is a first state adjustment command, a voltage is applied to the electrode to form an electric field in the light guiding control layer so that light can be transmitted and the light guiding control layer becomes transparent. If the first control command is the second state adjustment command, the voltage applied to the electrode is stopped, causing the electric field in the light guiding control layer to disappear, so that the light is scattered and the light guiding control layer appears to be in a fogged state.

[0010] In some embodiments, the dimming layer includes multiple blades and a transmission mechanism, and the second driving circuit is specifically used for: Based on the second control command, the transmission mechanism is driven to adjust the angle of multiple blades, thereby adjusting the angle of light transmitted through the dimming layer.

[0011] In some embodiments, the system includes an emergency circuit, which includes a voltage comparator and a high-speed electronic switch, the high-speed electronic switch being connected to a dimming layer and a light guiding control layer; The auxiliary sensors are also used to acquire collision information of the vehicle and send the collision information to the central controller, whereby the collision information includes the vehicle's acceleration; The voltage comparator, connected to the central controller and high-speed electronic switch, is used to receive collision information sent by the central controller. If it is determined that the acceleration of the car is greater than the preset acceleration, a trigger command is generated. Based on the trigger command, the high-speed electronic switch is turned on to apply voltage to the light guide control layer so that the light guide control layer becomes transparent. It also drives the transmission mechanism of the dimming layer to rotate multiple blades so that the blades reach the maximum angle to adjust the viewing angle range of the display screen of the display terminal.

[0012] Secondly, embodiments of this application provide a light adjustment method, applied to the light adjustment system as described in the first aspect, the method comprising: Obtain liveness information; Based on liveness information, determine the location and identity of the live person; Control commands are generated based on the location and identity of the living organism. Based on control commands, adjust the viewing angle range of the display screen of the display terminal.

[0013] Thirdly, embodiments of this application provide a vehicle, including: At least one processor; and, A memory that is communicatively connected to at least one processor; wherein, The memory stores instructions that can be executed by at least one processor, such that the instructions are executed by at least one processor to enable the at least one processor to perform the method as described in the second aspect.

[0014] The beneficial effects of the embodiments of this application are as follows: Unlike the prior art, the embodiments of this application provide a light adjustment system. This system obtains the living information inside the car through a liveness detection module. The central controller generates a first control command and a second control command based on the liveness information. The first drive circuit adjusts the transmitted light of the light guiding control layer to switch between a scattering state and a transmission state based on the first control command, so as to adjust the display screen of the display terminal to switch between a fogged state and a transparent state. The second drive circuit adjusts the angle of the transmitted light of the dimming layer based on the second control command, so as to adjust the viewing angle range of the display screen of the display terminal. It can coordinate the first drive circuit and the second drive circuit to adjust the viewing angle range of the display screen to improve the privacy effect of the display screen. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0016] Figure 1 This is a schematic diagram of the structure of a light adjustment system provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a liveness detection module provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a dimming layer provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a display screen of a display terminal provided in an embodiment of this application; Figure 5 This is a schematic diagram of an emergency circuit provided in an embodiment of this application; Figure 6 This is a schematic diagram of the overall structure of a light adjustment system provided in an embodiment of this application; Figure 7 This is a schematic flowchart of a light adjustment method provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of a car provided in an embodiment of this application.

[0017] Explanation of icon numbers: Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] It should be noted that, unless there is a conflict, the various features in the embodiments of this application can be combined with each other, all of which are within the protection scope of this application. In addition, the terms "first" and "second" used in this application do not limit the data, but only distinguish the same or similar items with basically the same function and effect.

[0020] Before introducing the embodiments of this application, a brief introduction will be given to the light adjustment system known to the inventors of this application, so as to facilitate the understanding of the embodiments of this application later.

[0021] Currently, in the field of liveness detection, liveness detection is mainly achieved through Time-of-Flight (TOF) cameras or single-frequency millimeter-wave radar. TOF cameras obtain depth information by emitting light pulses and measuring the time difference between the light reflected from the object and its return, thereby generating a three-dimensional image. The presence of a live body is then identified based on the three-dimensional image. Single-frequency millimeter-wave radar, on the other hand, identifies the presence of a live body by analyzing breathing and heartbeat signals.

[0022] In terms of display dimming technology, it mainly uses electronic dimming technology to make the polymer-dispersed liquid crystal layer appear atomized when the power is off, and to make the polymer-dispersed liquid crystal layer appear transparent when the power is on. Furthermore, in order to achieve the privacy protection effect of the display, a physical privacy film is used to achieve privacy protection of the display.

[0023] However, detecting live objects with a TOF camera can easily infringe on privacy, and the camera is easily affected by light. Single-frequency millimeter-wave radar is difficult to adapt to dynamic scenes and has limited signal penetration. Single polymer dispersed liquid crystal layer has poor fogging effect in strong light environment. The viewing angle of physical privacy films is usually fixed. Furthermore, the above solutions all exist in the form of independent modules and fail to form a closed-loop control mechanism from biosignal detection to optical parameter response, resulting in poor privacy adjustment effect of the display.

[0024] To address the aforementioned issues, this application provides a light adjustment system. A liveness detection module acquires liveness information within the vehicle. A central controller generates a first control command and a second control command based on this liveness information. A first drive circuit, based on the first control command, adjusts the transmitted light in the light guiding control layer to switch between a scattering state and a transmission state, thereby adjusting the display screen of the display terminal to switch between a fogged state and a transparent state. A second drive circuit, based on the second control command, adjusts the angle of the transmitted light in the dimming layer to adjust the viewing angle range of the display screen of the display terminal. This system can coordinate with the first and second drive circuits to adjust the viewing angle range of the display screen, thereby improving the privacy protection effect of the display screen.

[0025] The technical solution of this application is described in detail below with reference to the accompanying drawings: Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a light adjustment system provided in an embodiment of this application.

[0026] like Figure 1 As shown, the light adjustment system 100 includes: a liveness detection module 101, a domain controller 102, and a display screen 103 of a display terminal. The domain controller 102 includes a central controller 121, a first driving circuit 122, and a second driving circuit 123. The display screen 103 of the display terminal includes a light guiding control layer 131 and a dimming layer 132.

[0027] In this embodiment, the light adjustment system 100 is applied to a car. The light adjustment system 100 is used to adjust the viewing angle range of the display screen 103 of the display terminal to adapt to different driving scenarios, ambient light intensity and the needs of living people in different positions in the car, so as to ensure that the display screen is always in the optimal viewing state, such as ambient light intensity including strong direct light, low light at night, and tunnel light and dark switching.

[0028] Specifically, the liveness detection module 101 is connected to the domain controller 102. The liveness detection module 101 is used to detect life signs inside the car in real time, obtain liveness information, and send the liveness information to the domain controller 102.

[0029] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of a liveness detection module provided in an embodiment of this application.

[0030] like Figure 2 As shown, the liveness detection module 101 includes a radar 111, an auxiliary sensor 112, and a signal processing unit 113.

[0031] Specifically, radar 111 is connected to signal processing unit 113. Radar 111 is used to acquire vital sign information inside the vehicle and send the vital sign information to signal processing unit 113. The vital sign information includes breathing signals, heartbeat signals, limb micro-movement signals, and posture change signal lights.

[0032] In this embodiment of the application, multiple radars 111 are installed in the vehicle and arranged according to specific rules (such as linear array or planar array) to form a radar array. Each radar includes a transmitting antenna and a receiving antenna. The radar array is composed of multiple radars of this type arranged in a linear array or planar array. The radar array includes multiple transmitting antennas and receiving antennas.

[0033] In this embodiment, radar 111 includes dual-frequency millimeter-wave radar, single-frequency millimeter-wave radar, ultrasonic radar, lidar, etc. Preferably, the radar in this solution is a dual-frequency millimeter-wave radar, such as a 24+77GHz dual-frequency millimeter-wave radar.

[0034] Specifically, a dual-frequency millimeter-wave radar transmits millimeter-wave signals into the vehicle space. When the transmitted millimeter-wave signals encounter a living body (such as a human body) in the vehicle, they are reflected by the body surface, chest cavity, and other parts of the living body. If there are physiological or movement behaviors such as breathing, heartbeat, or limb movements inside the vehicle, the frequency, phase, and amplitude of the reflected signals will change slightly with the physiological or movement behaviors. The dual-frequency millimeter-wave radar receives the reflected signals and sends them to the signal processing unit 113.

[0035] Specifically, the auxiliary sensor 112 is connected to the signal processing unit 113. The auxiliary sensor 112 is used to monitor the vibration state of the vehicle, obtain the vibration information of the vehicle, and send the vibration information of the vehicle to the signal processing unit 113.

[0036] In this embodiment of the application, since the vehicle body will vibrate up and down or tilt slightly during the driving process, the radar 111 will not be able to measure the distance accurately. Therefore, an auxiliary sensor 112 is needed to detect the vibration state of the vehicle in real time to obtain the vibration information of the vehicle. Based on the vibration information of the vehicle, the vital sign information obtained by the radar 111 is corrected to eliminate the phase error caused by the vibration. The vibration information of the vehicle includes the vibration speed, displacement, angle change, etc.

[0037] In the embodiments of this application, the auxiliary sensor 112 includes, but is not limited to, a six-axis inertial measurement unit (SMU), a pressure sensor, a vibration sensor, etc. Preferably, the auxiliary sensor 112 of this application is a six-axis IMU, wherein the six-axis IMU includes a three-axis accelerometer and a three-axis gyroscope. The three-axis accelerometer is used to measure the linear acceleration of the car in three directions (forward and backward, left and right, up and down) in space, and the three-axis gyroscope is used to measure the rotation angle of the car around three coordinate axes (roll, pitch, yaw).

[0038] Specifically, the signal processing unit 113 is connected to the radar 111, the auxiliary sensor 112, and the central controller 121. The signal processing unit 113 is used to correct the vital signs information based on the vibration information of the vehicle to obtain the liveness information, and then send the liveness information to the central controller 121.

[0039] In this embodiment of the application, the signal processing unit 113 calculates the parameters of the vehicle body vibration based on the vibration information of the vehicle. The parameters of the vehicle body vibration include vibration frequency, vibration amplitude, vibration direction, etc. Through algorithms (such as the Doppler effect formula and phase displacement model), the parameters of the vehicle body vibration are converted into interference signals. The interference signals include the frequency, amplitude, and phase of the interference. The life characteristic information acquired by the radar 111 is subtracted from the interference signals to obtain the liveness information.

[0040] In this embodiment of the application, due to the vibration of the vehicle body, the vital signs information acquired by the radar 111 will also include vibration interference signals. Therefore, by subtracting the vital signs information and interference signals acquired by the radar 111, the vibration interference signals in the vital signs information can be eliminated, and only respiratory signals, heartbeat signals and a small amount of noise signals are retained.

[0041] Specifically, the central controller 121 is connected to the liveness detection module 101, the first drive circuit 122, and the second drive circuit 123. The central controller 121 is used to generate control commands based on the liveness information, wherein the control commands include a first control command and a second control command.

[0042] Specifically, the central controller 121 extracts features from the living body information to obtain the living body's physiological signals. Based on the physiological signals, it determines the living body's location and identity. Based on the living body's location and identity, it generates control commands. The physiological signals include respiratory signal values ​​and heartbeat signal values.

[0043] In this embodiment of the application, the frequency of the respiratory signal is usually 0.1HZ-0.5HZ, and the frequency of the heartbeat signal is usually 1HZ-2.2HZ. The respiratory signal is obtained by filtering signals higher than 0.5HZ through a 0.1HZ-0.5HZ bandpass filter, and the heartbeat signal is obtained by filtering signals lower than 0.1HZ through a 1HZ-2.2HZ bandpass filter.

[0044] Specifically, the central controller 121 calculates the liveness confidence score based on the respiratory signal value and heartbeat signal value, and determines whether the liveness confidence score is less than a confidence threshold. If the liveness confidence score is less than the confidence threshold, it is determined that there is no live person in the current vehicle. If the liveness confidence score is greater than or equal to the confidence threshold, the identity of the live person is determined based on the frequency corresponding to the respiratory signal, and the location of the live person is determined based on a preset algorithm. The liveness confidence score is equal to the first parameter * S_breathe / +second parameter *S_heart / , S represents the environmental noise variance, S_breathe represents the respiratory signal value, and S_heart represents the heartbeat signal value.

[0045] The preset algorithms include Multiple Signal Classification (MUSIC), visual detection, Estimation of Signal Parameters using Rotational Invariance Techniques (ESPRIT), and centroid localization. Taking the MUSIC algorithm as an example, the location of a live subject is determined based on the MUSIC algorithm. Specifically, the live subject information is decomposed into eigenvalues, resulting in two orthogonal subspaces: a signal subspace and a noise subspace. The signal subspace includes the features of all echo signals from live subjects, while the noise subspace only includes the features of ambient noise. The signal and noise subspaces are perpendicular to each other. A spatial search vector is constructed, and based on this vector, all possible directions (angles) and distances within the vehicle are traversed. The projection values ​​of the spatial search vector and the noise subspace are calculated. If the projection value is 0, a live subject is determined to exist in that direction or distance. If the projection value is large, no live subject is determined to exist in that direction or distance (i.e., only noise). For example, the MUSIC algorithm might output a result [(-15°, 1.2m), (25°, 0.8m)], indicating that the system detected two targets (i.e., live subjects) located 15 degrees to the left of the radar axis at a distance of 1.2 meters and 25 degrees to the right of the radar axis at a distance of 0.8 meters, respectively.

[0046] In the embodiments of this application, These are estimates that are calculated in real time and change dynamically. It will change with the driving environment; in scenarios with high noise energy, It will increase in size, especially in scenarios with low noise energy. It will get smaller.

[0047] In the embodiments of this application, the liveness confidence level is usually between 0 and 1. The higher the liveness confidence level, the higher the certainty that there is a live body in the current detection area. Therefore, the confidence threshold can be 0.85.

[0048] In this embodiment of the application, when the vehicle speed increases, the confidence threshold needs to be adjusted accordingly. For example, when the vehicle speed is greater than 80 km / h, the confidence threshold is adjusted from 0.85 to 0.92.

[0049] In this embodiment of the application, the driving speed of the car directly determines the priority of driving safety and the intensity of signal interference. In low-speed and high-speed scenarios, the risk cost of misoperation and the reliability of the signal are different. Therefore, it is necessary to adjust the confidence threshold to dynamically switch the priority of sensitivity and specificity. Sensitivity refers to the ability of signal recognition to detect omissions, and specificity refers to the ability of signal recognition to maintain fidelity.

[0050] In this embodiment, the confidence threshold is lowered in low-speed scenarios to ensure that more real respiratory and heartbeat signals are extracted, while the confidence threshold is raised in high-speed scenarios to determine that the extracted respiratory and heartbeat signals are valid signals.

[0051] In this embodiment of the application, the location of the living person includes the driver's seat, the passenger seat, and the rear seat, and the identity of the living person includes adults and children.

[0052] In the embodiments of this application, the respiratory rate of adults is typically between 0.2Hz and 0.4Hz, and the respiratory rate of children is typically between 0.5Hz and 0.7Hz. The first control command includes a first state adjustment command and a second state adjustment command.

[0053] Specifically, the central controller 121 determines whether there is a living person and the identity of the living person at each location by the breathing frequency corresponding to the breathing signal in the living person information. If it is determined that there is an adult in the driver's seat and no one in the front passenger seat or the back seat, a first state adjustment command is generated. If it is determined that there is an adult in the front passenger seat and no one in the back seat, a second state adjustment command is generated.

[0054] In this embodiment, the central controller 121 includes, but is not limited to, a vehicle-specific microcontroller unit and a vehicle domain controller core chip.

[0055] Specifically, the first driving circuit 122 is connected to the central controller 121 and the light guiding control layer 131. The first driving circuit 122 is used to adjust the transmitted light of the light guiding control layer 131 to switch between a scattering state and a transmission state based on the first control command, so as to adjust the display screen of the display terminal to switch between a fogged state and a transparent state.

[0056] In the embodiments of this application, the first driving circuit includes, but is not limited to, a PDLC-specific high-voltage driving chip and an integrated electronically controlled dimming driving module.

[0057] In this embodiment, the first driving circuit 122 includes an electrode connected to the light guiding control layer 131.

[0058] Specifically, if the first control command is a first state adjustment command, the first driving circuit 122 applies a voltage to the electrode, thereby forming an electric field in the light guiding control layer 131 so that light can be transmitted and the light guiding control layer 131 becomes transparent.

[0059] Specifically, if the first control command is the second state adjustment command, the first driving circuit 122 stops applying voltage to the electrode, causing the electric field in the light guiding control layer 131 to disappear, so that the light is scattered and the light guiding control layer presents a fogging state.

[0060] In this embodiment, the light guiding control layer 131 is composed of a polymer-dispersed liquid crystal film, which is a composite functional material formed by dispersing liquid crystal molecules in a polymer matrix.

[0061] In this embodiment, after an electric field is formed in the light guiding control layer 131, the liquid crystal molecules in the light guiding control layer 131 will be neatly arranged. The neatly arranged liquid crystal molecules will not block the light, allowing the light to penetrate the light guiding control layer 131. When the first driving circuit 122 stops applying voltage to the electrodes, and the electric field disappears in the light guiding control layer 131, the liquid crystal molecules in the light guiding control layer 131 will return to a random arrangement. The randomly arranged liquid crystal molecules will strongly scatter the light, making it impossible for the light to penetrate the light guiding control layer 131. This causes the display screen to appear fogged when viewed from the side. For example, the person in the driver's seat can see the content of the display screen clearly, while the person in the passenger seat and the person in the back seat cannot see the display screen clearly, thereby achieving privacy protection.

[0062] Specifically, the second driving circuit 123 is connected to the central controller 121 and the dimming layer 132. The second driving circuit 123 is used to adjust the angle of light transmitted through the dimming layer 132 based on the second control command, so as to adjust the viewing angle of the display screen 103 of the display terminal.

[0063] In this embodiment, the second driving circuit 123 includes, but is not limited to, a stepper motor driver chip, a DC geared motor driver module, and a DC geared motor driver module.

[0064] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of a dimming layer provided in an embodiment of this application.

[0065] like Figure 3 As shown, the dimming layer 132 includes a blade unit 1301 and a transmission mechanism 1302. The blade unit 1301 includes a plurality of blades 1311.

[0066] Specifically, the dimming layer 132 also includes a motor that drives the transmission mechanism 1302 based on the second control command. The transmission mechanism 1302 converts the rotation of the motor into a slight deflection of the shaft. The transmission mechanism 1302 adjusts the angle of multiple blades 1311 to adjust the angle of light transmitted through the dimming layer 132, thereby adjusting the viewing range of the display screen.

[0067] In this embodiment, the dimming layer 132 is composed of a micro venetian blind array, which is an integrated ultra-fine optical structure. The micro venetian blind array consists of several parallel micro light-shielding blades (i.e., blade units), drive linkages (i.e., transmission mechanisms), and micro drive units (such as motors).

[0068] In this embodiment, the blade material in the blade unit 1301 is ultra-thin aluminum foil or polyimide. The width of the blade 1311 is 5μm-20μm, and the length of the blade 1311 covers the display area of ​​the display screen. The surface of the blade 1311 includes a gradient refractive index coating and a low-friction oleophobic layer. The gradient refractive index coating is used to suppress edge diffraction to improve optical uniformity, and the low-friction oleophobic layer is used to prevent static friction adhesion between the blades 1311 to ensure long-term stable operation of the dimming layer.

[0069] In the embodiments of this application, the motor includes a micro stepper motor, a micro DC geared motor, and a piezoelectric motor. Preferably, the motor in this application is a micro stepper motor, such as a PM type permanent magnet stepper motor or a piezoelectric ceramic stepper motor (PICMA® series multi-functional actuator).

[0070] In this embodiment, a precision metal wire runs through all the blades in the blade unit 1301 as a rotating shaft. The two ends of the rotating shaft are supported by a miniature structure bearing, and a worm gear mechanism is used to convert the rotation of the motor into a small deflection of the rotating shaft, so as to achieve precise adjustment of the blade angle.

[0071] In this embodiment, the dimming layer 132 also includes an encapsulation structure. The encapsulation structure is used to ensure the long-term operation of the blade unit 1301 and the transmission mechanism 1302. The encapsulation structure includes a sealing frame layer, an encapsulation atmosphere layer, and a spacer layer. The sealing frame layer uses epoxy resin to achieve high airtightness. The sealing frame layer is used to prevent external dust and moisture from entering the interior, avoiding failure of the blade and transmission mechanism due to contamination or corrosion. The encapsulation atmosphere layer is filled with high-purity nitrogen, so that the dew point is less than -60°C. The extremely low dew point can prevent the oxidation of internal components and ensure that the blade material and metal shaft do not rust or deteriorate for a long time. The spacer layer includes a precision gasket, which provides physical buffer space for the blade and transmission mechanism to avoid direct collision of components due to vibration and impact, and maintain the angle adjustment accuracy of the blade. Here, the dew point indicates the dryness of the air. A dew point of -60°C means that the nitrogen is almost free of moisture.

[0072] In this embodiment, the thermal expansion coefficients of the sealing frame layer, the encapsulation atmosphere layer, and the spacer layer in the encapsulation structure are designed to be consistent in order to avoid thermal stress caused by temperature fluctuations (such as high and low temperature changes in the vehicle environment), prevent the encapsulation structure from failing, and ensure the long-term stable operation of the internal blade unit 1301 and the transmission system.

[0073] In this embodiment, the angle of the blades 1311 in the dimming layer 132 is adjusted to control the angle of light transmission, thereby determining the angle from which the display screen can be seen.

[0074] In this embodiment, the angle of light transmitted through the display screen is adjusted by the light guiding control layer 131 and the dimming layer to adjust the range of the effective viewing angle and improve the privacy protection effect. The effective viewing angle is the effective viewing angle of the people inside the car.

[0075] In this embodiment, the dimming layer 132 restricts the range of the light incident angle to 10°. up to 45 When the light guiding control layer 131 is in a fogged state, the scattering angle ranges from -60°. Up to +60 When the light guiding control layer 131 is in a transparent state, the scattering angle ranges from -2. to +2 In the atomized state, the effective viewing angle θ_eff of the light guiding control layer 131, in conjunction with the dimming layer 132, is 75° - 0.8 * θ_b. In the transparent state, the effective viewing angle θ_eff of the light guiding control layer 131, in conjunction with the dimming layer 132, is 10° - 0.3 * θ_b. Here, θ_b is the preset tilt angle of the micro venetian blind, and θ_b = base layer reference value ± environmental compensation value. The range of the environmental compensation value is +8° to -8°, and the range of the base layer reference value is 5° to 45°. The specific values ​​can be set according to the actual situation. For example, multiple modes can be set, each corresponding to a different base layer reference value. Specifically, the base layer reference value can be set to 10°, 30°, 40°, 15°, or it can also be set to 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°.

[0076] For example, if there is only someone in the driver's seat and the car is currently traveling at a low speed, the base layer reference value is 10°; if there is someone in the passenger seat and the car is currently traveling at a high speed, the base layer reference value is 30°; if there is a child in the back seat and there is a high need for privacy (i.e. the content of the display screen needs to be covered, specifically by adjusting the visible range of the display screen to enhance privacy protection), the base layer reference value is 40°; if multiple occupants are detected in the car, the base layer reference value is 15°.

[0077] In this embodiment, under extreme light intensity, the baseline value of the base layer needs to be dynamically compensated to adapt to the extreme light intensity scenario. For example, in a strong light scenario (such as direct midday sunlight), a larger environmental compensation value is selected, and the baseline value of the base layer and the larger environmental compensation value are added together. For example, the environmental compensation value in a strong light scenario is +8° to increase the tilt angle and reduce the interference of direct sunlight on the driver's field of vision. In a dim light scenario (such as at night or in a tunnel), a smaller environmental compensation value is selected, and the baseline value of the base layer and the smaller environmental compensation value are added together. For example, the environmental compensation value in a dim light scenario is -8° to reduce the tilt angle, improve light transmittance, and avoid excessively dark vision. If the light intensity is moderate, no compensation is required for the baseline value of the base layer, that is, the environmental compensation value is 0°.

[0078] In this embodiment, the display screen 103 of the car's display terminal includes three modes: driver's seat anti-peeping mode, passenger seat sharing mode, and child care mode. When only the driver's seat is occupied, the display screen is set to driver's seat anti-peeping mode. In driver's seat anti-peeping mode, the light guide control layer 131 of the display screen is transparent, and the blade angle in the dimming layer 132 is 10°. When the passenger seat is occupied and the rear seats are empty, the display screen is set to passenger seat sharing mode. In passenger seat sharing mode, the light guide control layer 131 of the display screen is transparent, and the blade angle in the dimming layer 132 is 30°. When there is a child in the rear seats, the display screen is set to child care mode. In child care mode, the light guide control layer 131 of the display screen is fogged up, the blade angle in the dimming layer 132 is 40°, and the display screen can be selectively set to blue light protection mode.

[0079] In the embodiments of this application, in the driver's seat anti-peeping mode, it can be ensured that only the person in the driver's seat can view the display screen to prevent the content of the display screen from being leaked, such as preventing the leakage of Alipay code, privacy navigation and other information. In the passenger seat sharing mode, both the driver and the passenger can clearly see the display screen. In the child care mode, the children in the rear seat can clearly see the display screen, and the blue light protection mode can protect the children's eyesight.

[0080] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of a display screen of a display terminal provided in an embodiment of this application.

[0081] like Figure 4 As shown, the display screen 103 of the display terminal includes a tempered glass layer 133, a dimming layer 132, a nitrogen filling layer 134, a light guiding control layer 131, and a display panel 135, which are arranged sequentially from the outside to the inside to form a display screen.

[0082] In this embodiment, the thickness of the tempered glass layer 133 can be 0.7 mm. The outer surface of the tempered glass layer 133 (the surface facing outwards) is processed to form numerous microstructures, while the inner surface of the tempered glass layer 133 (the surface facing the dimming layer) remains smooth. Processing the outer surface of the tempered glass layer 133 to form numerous microstructures enables the tempered glass layer 133 to scatter strong light, thereby reducing the interference of external strong light reflection. At the same time, the smoothness of the inner surface of the tempered glass layer 133 is maintained, so that the tempered glass layer 133 does not affect the optical control effect of the dimming layer 132 and the light guiding control layer 131.

[0083] In this embodiment, the viewing angle range is precisely controlled by adjusting the angle of the blades in the dimming layer 132.

[0084] In this embodiment, the thickness of the nitrogen filling layer 134 can be set to 0.2 mm. The nitrogen filling layer 134 is used to isolate the dimming layer 132 and the light guiding control layer 131 to prevent the dimming layer 132 from rubbing against the light guiding control layer 131.

[0085] In this embodiment, the light guiding control layer 131 is used to switch the light transmission state (such as transparent state and fogged state). By coordinating the light guiding control layer 131 and the dimming layer 132, the effective viewing angle of the display screen can be dynamically changed to meet the privacy or transparency requirements in different scenarios.

[0086] In this embodiment, the display panel 135 provides the original display content. The display panel 135 includes, but is not limited to, organic light-emitting diodes (OLEDs), liquid crystal displays (LCDs), mini light-emitting diodes (Mini LEDs), micro light-emitting diodes (Micro LEDs), quantum dot light-emitting diodes (QLEDs), etc.

[0087] In this embodiment of the application, the light adjustment system 100 also includes an emergency circuit 104. The emergency circuit 104 is used to eliminate visual obstruction and provide clear escape guidance through hardware-level rapid response in emergency situations such as vehicle collisions, thereby maximizing the escape efficiency and safety of the people in the vehicle and avoiding escape obstruction caused by main system failure or response delay.

[0088] Please see Figure 5 , Figure 5 This is a schematic diagram of an emergency circuit provided in an embodiment of this application.

[0089] like Figure 5 As shown, the emergency circuit 104 includes a voltage comparator 141 and a high-speed electronic switch 142.

[0090] In this embodiment of the application, the auxiliary sensor 112 is also used to acquire collision information of the vehicle and send the collision information to the central controller 121, wherein the collision information includes the acceleration of the vehicle.

[0091] Specifically, voltage comparator 141 is connected to central controller 121 and high-speed electronic switch 142. Voltage comparator 141 receives collision information sent by central controller 121. If the vehicle's acceleration is determined to be greater than a preset acceleration, a trigger command is generated. Based on the trigger command, high-speed electronic switch 142 is activated to apply voltage to light-guiding control layer 131, making it transparent. Simultaneously, the transmission mechanism 1302 driving dimming layer 132 rotates multiple blades to their maximum angle, adjusting the viewing angle range of display screen 103 to the maximum effective range, ensuring that occupants can clearly observe emergency information on the display screen after a collision. The maximum angle can be 45°. The preset acceleration can be 5g (i.e., 5 * 9.8 m / s²). =49 m / ).

[0092] In this embodiment, the voltage comparator 141 is connected to the central controller 121 via an onboard CAN bus.

[0093] In the embodiments of this application, voltage comparator 141 is not limited to, but includes, high-speed voltage comparator.

[0094] In this embodiment, when the vehicle speed is greater than the preset speed, the blades of the dimming layer 132 are adjusted to the maximum angle, and the light guide control layer is forced to be transparent, so that the viewing angle of the display screen 103 of the display terminal is within the maximum effective range, ensuring that the occupants of the vehicle can clearly observe the emergency guidance information on the display screen after a collision, so as to provide a clear escape direction.

[0095] In this embodiment, when the vehicle's acceleration exceeds a preset acceleration, the processing logic of the central controller 121 is bypassed, and the emergency circuit 104 quickly adjusts the display state of the display screen 103 of the display terminal to avoid malfunctions in the operating system, software, or central controller 121, thereby improving user safety.

[0096] In this embodiment of the application, the display terminal is also equipped with mobile phone applications, voice assistants, etc. For example, the applications include navigation map applications, audio applications, video applications, weather applications, etc. People in the car can trigger the corresponding applications by clicking on the display screen of the display terminal, or by triggering the corresponding applications through the voice assistant, so that users can set their own preferences to improve the user experience.

[0097] Please see Figure 6 , Figure 6 This is a schematic diagram of the overall structure of a light adjustment system provided in an embodiment of this application.

[0098] like Figure 6As shown, the light adjustment system 100 includes a radar 111, an auxiliary sensor 112, a signal processing unit 113, a central controller 121, a first driving circuit 122, a second driving circuit 123, a light guiding control layer 131, a dimming layer 132, a voltage comparator 141, a high-speed electronic switch 142, and a display panel 135.

[0099] In this embodiment, the radar 111 obtains the liveness information inside the car, and the auxiliary sensor 112 obtains the vibration information of the car. The signal processing unit 113 receives the liveness information sent by the radar 111 and the vibration information of the car obtained by the auxiliary sensor 112. The signal processing unit 113 corrects the liveness information based on the vibration information of the car, and sends the corrected liveness information to the central controller 121. The central controller 121 generates a first control command and a second control command based on the liveness information, so as to adjust the angle of the transmitted light of the light guide control layer 131 based on the first control command, and adjust the angle of the transmitted light of the dimming layer 132 based on the second control command, so as to adjust the viewing angle range of the display screen 103 of the display terminal, thereby improving the privacy effect of the display panel 135.

[0100] In this embodiment, the auxiliary sensor 112 is also used to acquire the collision information of the vehicle in real time, and send the collision information of the vehicle to the voltage comparator 141 through the central controller 121. The voltage comparator 141 compares the acceleration of the vehicle with the preset acceleration. If it is determined that the acceleration of the vehicle is greater than the preset acceleration, a trigger command is generated. Based on the trigger command, the high-speed electronic switch 142 is turned on to apply voltage to the light guiding control layer 131 so that the light guiding control layer 131 is transparent. The transmission mechanism 1302 of the dimming layer 132 is driven to rotate multiple blades so that the blades reach the maximum angle to adjust the viewing angle range of the display screen 103 of the display terminal.

[0101] In this embodiment, the display effect of the display panel 135 is adjusted by coordinating the light guide control layer 131 and the dimming layer 132 to improve the privacy protection effect of the display screen.

[0102] Furthermore, by detecting the vehicle's acceleration in real time, when the vehicle's acceleration exceeds the preset acceleration, the high-speed electronic switch 142 adjusts the transmittance brightness of the light guide control layer 131 and the dimming layer 132 to bypass the central controller. This allows for rapid adjustment of the display panel's display effect when the central controller is damaged due to a collision caused by excessive vehicle speed, ensuring that all occupants can clearly see the display screen and view emergency guidance information, providing occupants with a clear escape route.

[0103] Please see Figure 7 , Figure 7This is a schematic flowchart of a light adjustment method provided in an embodiment of this application.

[0104] The light adjustment method is applied to a light adjustment system, which is applied to a car. Specifically, the subject of the light adjustment method is one or at least two processors of the car.

[0105] like Figure 7 As shown, the light adjustment method includes: Step S701: Obtain liveness information.

[0106] In this embodiment, the light adjustment system includes a liveness detection module, which includes radar.

[0107] Specifically, radar can be used to monitor vital signs inside a car in real time to obtain information about living individuals inside the vehicle, including respiratory and heartbeat signals.

[0108] In this embodiment, the liveness detection module further includes an auxiliary sensor, which is used to acquire the vibration information of the vehicle in order to correct the liveness information based on the vibration information of the vehicle and eliminate information errors generated during vehicle operation.

[0109] Step S702: Based on the liveness information, determine the location and identity of the liveness.

[0110] In this embodiment, the light adjustment system further includes a domain controller, which includes a central controller.

[0111] Specifically, the central controller calculates the liveness confidence score based on the liveness information, and determines whether there is a live person in the car based on the liveness confidence score and the confidence score threshold. If the liveness confidence score is less than the confidence score threshold, it is determined that there is no live person in the car. If the liveness confidence score is greater than or equal to the confidence score threshold, it is determined that there is a live person in the car.

[0112] Specifically, when it is determined that a living person is inside the car, the range of respiratory frequencies corresponding to the respiratory signals in the living person's information is determined to identify the living person's identity. The identity of the living person includes adults and children. For example, if the respiratory frequency range is within 0.2Hz-0.4Hz, the living person is identified as an adult; if the respiratory frequency range is within 0.5Hz-0.7Hz, the living person is identified as a child.

[0113] Specifically, the central controller has a built-in preset algorithm that analyzes the liveness information to determine the liveness location. The preset algorithm includes, but is not limited to, multiple signal classification algorithm, visual detection algorithm, parameter estimation algorithm, centroid localization algorithm, etc.

[0114] Step S703: Generate control commands based on the location and identity of the living organism.

[0115] In this embodiment, the domain controller further includes a first driving circuit and a second driving circuit. The light adjustment system further includes a display screen of the display terminal. The display screen includes a dimming layer and a light guiding control layer. The dimming layer includes multiple blades. The first driving circuit is connected to the light guiding control layer, and the second driving circuit is connected to the dimming layer.

[0116] Specifically, the central controller generates control commands based on the location and identity of the living being, including a first control command and a second control command.

[0117] In this embodiment, the first control command is used to control the first driving circuit to adjust the state of the light guiding control layer, and the second control command is used to control the second driving circuit to adjust the angle of multiple blades in the dimming layer. The state of the light guiding control layer includes a transparent state or a fogged state.

[0118] Step S704: Adjust the viewing angle range of the display screen of the display terminal based on the control command.

[0119] In the embodiments of this application, the control instructions include a first control instruction and a second control instruction.

[0120] Specifically, the first driving circuit is controlled to adjust the state of the light guiding control layer based on the first control command, and the second driving circuit is controlled to adjust the angle of multiple blades in the dimming layer based on the second control command, so as to coordinate the light guiding control layer and the dimming layer to adjust the angle of the transmitted light of the display screen, so as to adjust the viewing angle range of the display screen of the car's display terminal.

[0121] In this embodiment, the angle of light transmitted through the display screen is adjusted by the coordinated light guiding control layer and the dimming layer to improve the privacy protection effect of the display screen.

[0122] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of a car provided in an embodiment of this application; like Figure 8 As shown, the vehicle 800 includes one or more processors 801 and a memory 802. Among them, Figure 8 Take the 801 processor as an example.

[0123] The processor 801 and the memory 802 can be connected via a bus or other means. Figure 8 Taking the example of a connection between China and Israel via a bus.

[0124] Processor 801 is configured to execute the light adjustment method in any embodiment of this application, including: Obtain liveness information; Based on liveness information, determine the location and identity of the live person; Control commands are generated based on the location and identity of the living organism. Based on control commands, adjust the viewing angle range of the display screen of the display terminal.

[0125] The memory 802, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as the program instructions / modules corresponding to the light adjustment method in the embodiments of the present invention. The processor 801 executes various functional applications and data processing of the electronic device by running the non-volatile software programs, instructions, and modules stored in the memory 802, thereby implementing the light adjustment method of the above-described method embodiments.

[0126] Memory 802 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, memory 802 may optionally include memory remotely located relative to processor 801. Examples of the above-described networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0127] One or more modules are stored in memory 802. When executed by one or more processors 801, they perform the light adjustment method in any of the above method embodiments, for example, the method described above. Figure 7 The steps shown.

[0128] This application also provides a computer program product, which includes one or more lines of program code stored in a non-volatile computer-readable storage medium. The processor of the electronic device reads the program code from the non-volatile computer-readable storage medium and executes the program code to complete the steps of the light adjustment method provided in the above embodiments.

[0129] Based on the above description of the embodiments, those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware, or by a program or program code related to hardware. The program can be stored in a non-volatile computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0130] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The non-volatile computer-readable storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations as described above in different aspects of this application, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A light regulation system, characterized in that The system is applied to a car and comprises a living body detection module, a domain controller, and a display screen of a display terminal, the domain controller comprises a central controller, a first driving circuit, and a second driving circuit, and the display screen comprises a light adjusting layer and a light guiding control layer; The living body detection module is connected with the central controller and is configured to acquire living body information in the car and send the living body information to the central controller; The central controller is connected with the living body detection module, the first driving circuit, and the second driving circuit and is configured to generate a control instruction based on the living body information, wherein the control instruction comprises a first control instruction and a second control instruction; The first driving circuit is connected with the central controller and the light guiding control layer and is configured to adjust the light guiding control layer to switch the transmission light between a scattering state and a transmission state based on the first control instruction, so as to adjust the display screen of the display terminal to switch between a fogging state and a transparent state; The second driving circuit is connected with the central controller and the light adjusting layer and is configured to adjust the angle of the transmission light of the light adjusting layer based on the second control instruction, so as to adjust the visual angle range of the display screen of the display terminal.

2. The system of claim 1, wherein, The living body detection module comprises a radar, an auxiliary sensor, and a signal processing unit; The radar is connected with the signal processing unit and is configured to acquire life characteristic information in the car and send the life characteristic information to the signal processing unit; The auxiliary sensor is connected with the signal processing unit and is configured to monitor the vibration state of the car to acquire vibration information of the car and send the vibration information of the car to the signal processing unit; The signal processing unit is connected with the radar, the auxiliary sensor, and the central controller and is configured to correct the life characteristic information based on the vibration information of the car to obtain living body information and send the living body information to the central controller.

3. The system of claim 2, wherein, The central controller is specifically configured to: extract features from the living body information to obtain physiological signals of a living body; determine the position of the living body and the identity of the living body based on the physiological signals; and generate the control instruction based on the position of the living body and the identity of the living body.

4. The system of claim 3, wherein, The physiological signals comprise a breathing signal value and a heartbeat signal value, and the central controller is specifically configured to: calculate a living body confidence based on the breathing signal value and the heartbeat signal value; if the living body confidence is less than a confidence threshold, determine that there is no living body in the current car; if the living body confidence is greater than or equal to the confidence threshold, determine the identity of the living body based on the frequency corresponding to the breathing signal and determine the position of the living body based on a preset algorithm.

5. The system of claim 3, wherein, The position of the living body comprises a main driver position, a co-driver position, and a rear seat position, the identity of the living body comprises an adult and a child, the first control instruction comprises a first state adjustment instruction and a second state adjustment instruction, and the central controller is specifically configured to: if it is determined that the main driver position has an adult and the co-driver position and the rear seat position both have no person, generate the first state adjustment instruction. If it is determined that the co-driver position has an adult and the back row position has no one, the first state adjustment instruction is generated; If it is determined that the back row position has a child, the second state adjustment instruction is generated.

6. The system of claim 5, wherein, The first drive circuit includes an electrode connected to the light guiding control layer, and the first drive circuit is specifically configured to: If the first control instruction is the first state adjustment instruction, a voltage is applied to the electrode to form an electric field in the light guiding control layer to make light transmission, and the light guiding control layer assumes a transparent state; If the first control instruction is the second state adjustment instruction, the voltage applied to the electrode is stopped to make the electric field in the light guiding control layer disappear to make light scattering, and the light guiding control layer assumes a fogging state.

7. The system of claim 2, wherein, The dimming layer includes a plurality of blades and a transmission mechanism, and the second drive circuit is specifically configured to: Based on the second control instruction, the transmission mechanism is driven to adjust the angle of the plurality of blades to adjust the angle of the light transmission of the dimming layer.

8. The system of claim 7, wherein, The system includes an emergency circuit, which includes a voltage comparator and a high-speed electronic switch connected to the dimming layer and the light guiding control layer. The auxiliary sensor is also configured to acquire collision information of the vehicle and send the collision information to the central controller, wherein the collision information includes the acceleration of the vehicle. The voltage comparator is connected to the central controller and the high-speed electronic switch, and is configured to receive the collision information sent by the central controller. If it is determined that the acceleration of the vehicle is greater than a preset acceleration, a trigger instruction is generated. Based on the trigger instruction, the high-speed electronic switch is turned on to apply a voltage to the light guiding control layer to make the light guiding control layer assume a transparent state, and the transmission mechanism of the dimming layer is driven to rotate the plurality of blades to make the blades reach a maximum angle to adjust the visual angle range of the display screen of the display terminal.

9. A light adjusting method characterized by, The method is applied to the light adjusting system of any one of claims 1-8, and the method includes: Acquiring living body information; Based on the living body information, determining the position of the living body and the identity of the living body; Based on the position of the living body and the identity of the living body, generating a control instruction, Based on the control instruction, adjusting the visual angle range of the display screen of the display terminal.

10. An automobile characterized by comprising: It includes: At least one processor; And The memory is in communication connection with the at least one processor; wherein The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the method of claim 9.

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