Display method, system and device for night driving

Abstract

The invention discloses a night driving display method, system and device. The method comprises the steps that ambient light in front of a vehicle is collected at the first moment, and first ambient light is obtained; based on a comparison result of the first light intensity value of the first ambient light and a light intensity threshold, a first light intensity level of the first ambient light is determined, and the first light intensity level is in positive correlation with the first light intensity value; on the basis of a first corresponding relation between the light intensity levels and the light transmissivity, the light transmissivity of a front windshield module of the vehicle is adjusted to be the first light transmissivity corresponding to the first light intensity level, and in the first corresponding relation, all the light intensity levels are in negative correlation with the light transmissivity corresponding to the light intensity levels; and adjusting the projection content of a head-up display module of the vehicle into first projection content corresponding to the first light intensity level based on a second corresponding relation between the light intensity level and the projection content. According to the invention, the night driving safety can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a display method, system and device for nighttime driving. Background Art

[0002] Vehicles are becoming more and more important in people's lives due to their convenient transportation. However, the use of vehicles has also led to some new problems, such as traffic accidents. Among the traffic accidents that occur when driving at night, a large proportion of them are caused by the misuse of high beams.

[0003] In order to avoid the safety hazards caused by the abuse of high beams by vehicles, the commonly used method is to use a sun visor to block the high beams. Although this avoids the problem of blinding caused by high beams, the sun visor will also block the driver's line of sight, resulting in low safety of driving at night. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a display method, system and device for night driving to solve the problem of low safety of night driving.

[0005] The technical solution of this application is as follows:

[0006] In a first aspect, a method for displaying nighttime driving is provided, the method comprising:

[0007] Collecting the ambient light in front of the vehicle at a first moment to obtain the first ambient light;

[0008] Determining a first light intensity level of the first ambient light based on a comparison result of the first light intensity value of the first ambient light and a light intensity threshold, wherein the first light intensity level is positively correlated with the first light intensity value;

[0009] Based on a first correspondence between light intensity levels and light transmittances, adjusting the light transmittance of the front windshield module of the vehicle to a first light transmittance corresponding to the first light intensity level, wherein in the first correspondence, each light intensity level is negatively correlated with the light transmittance corresponding to the light intensity level;

[0010] Based on a second correspondence between light intensity levels and projection content, the projection content of the head-up display module of the vehicle is adjusted to the first projection content corresponding to the first light intensity level, wherein, in the second correspondence, for each light intensity level among the light intensity levels less than or equal to the first level threshold and the light intensity levels greater than the second level threshold, the projection content corresponding to the light intensity level includes the front image of the vehicle; and the second level threshold is greater than the first level threshold.

[0011] In a second aspect, a display system for nighttime driving is provided, comprising: a light intensity sensor module, a front windshield module and a head-up display module;

[0012] The light intensity sensor module is arranged outside the front windshield module, and is used to collect the ambient light in front of the vehicle, and output the light intensity level of the ambient light based on the light intensity value of the ambient light, wherein the light intensity level of the ambient light is positively correlated with the light intensity value of the ambient light;

[0013] The front windshield module is electrically connected to the light intensity sensor module, and the light transmittance of the front windshield module is determined based on the light intensity level of the ambient light, wherein the light transmittance of the front windshield module is negatively correlated with the light intensity level of the ambient light;

[0014] The head-up display module is electrically connected to the light intensity sensor module, and the projected content of the head-up display module is determined based on the light intensity level of the ambient light, wherein when the light intensity level of the ambient light is less than or equal to the light intensity level of a first level threshold, or greater than a second level threshold, the projected content of the head-up display module includes the front image of the vehicle.

[0015] In a third aspect, a display device for nighttime driving is provided, the device comprising:

[0016] A collection module, used for collecting the ambient light in front of the vehicle at a first moment to obtain the first ambient light;

[0017] a determination module, configured to determine a first light intensity level of the first ambient light based on a comparison result of the first light intensity value of the first ambient light and a light intensity threshold, wherein the first light intensity level is positively correlated with the first light intensity value;

[0018] a first adjustment module, configured to adjust the light transmittance of the front windshield module of the vehicle to a first light transmittance corresponding to the first light intensity level based on a first correspondence between light intensity levels and light transmittances, wherein in the first correspondence, each light intensity level is negatively correlated with the light transmittance corresponding to the light intensity level;

[0019] A second adjustment module is used to adjust the projection content of the head-up display module of the vehicle to the first projection content corresponding to the first light intensity level based on a second correspondence between the light intensity level and the projection content, wherein in the second correspondence, for each light intensity level among the light intensity levels less than or equal to the first level threshold and the light intensity levels greater than the second level threshold, the projection content corresponding to the light intensity level includes the front image of the vehicle; and the second level threshold is greater than the first level threshold.

[0020] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the night driving display method described in any one of the embodiments of the present application.

[0021] In a fifth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the night driving display method described in any one of the embodiments of the present application are implemented.

[0022] In a sixth aspect, an embodiment of the present application provides a computer program product. When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device can perform the steps of the night driving display method described in any one of the embodiments of the present application.

[0023] The technical solution provided by the embodiments of the present application brings at least the following beneficial effects:

[0024] The night driving display method provided in the embodiment of the present application can determine the first light intensity level of the first ambient light collected in front of the vehicle at the first moment based on the comparison result of the first light intensity value of the first ambient light and the light intensity threshold.

[0025] Then, on the one hand, based on the first correspondence between the light intensity level and the light transmittance, the light transmittance of the front windshield module of the vehicle can be adjusted to the first light transmittance corresponding to the first light intensity level. Since the first light intensity level is positively correlated with the first light intensity value, the light transmittance in the first correspondence is negatively correlated with the corresponding light intensity level. In this way, when the ambient light is strong, such as when the vehicle is illuminated by the high beam in front, the light transmittance of the front windshield module can be lowered to avoid the problem of blinding by the high beam; when the ambient light is weak, the light transmittance of the front windshield module can be increased to allow more ambient light to enter the driver's field of vision. It can be seen that by adjusting the light transmittance of the front windshield module of the vehicle to the light transmittance corresponding to the light intensity level of the collected ambient light, the driver's forward field of vision can be improved, thereby improving the safety of driving at night.

[0026] On the other hand, based on the second correspondence between the light intensity level and the projection content, the projection content of the vehicle's head-up display module can be adjusted to the first projection content corresponding to the first light intensity level. Since the projection content corresponding to the lower or higher light intensity level in the second correspondence includes the front image of the vehicle, when the ambient light is strong, such as when the vehicle is illuminated by the high beam in front, or when the ambient light is weak, the front image of the vehicle can be projected through the head-up display module, so that the driver can obtain the road conditions ahead with the help of the front image, thereby improving the safety of driving at night.

[0027] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0029] Figure 1 This is one of the flow charts of the method for displaying night driving provided by an embodiment of the present application;

[0030] Figure 2 is a structural diagram of a display system for nighttime driving provided by an embodiment of the present application;

[0031] Figure 3 is a structural diagram of a light intensity sensor module provided in an embodiment of the present application;

[0032] Figure 4 is a structural diagram of a HUD module provided in an embodiment of the present application;

[0033] Figure 5 This is the second flow chart of the method for displaying night driving provided by the embodiment of the present application;

[0034] Figure 6 is a structural diagram of a display device for nighttime driving provided by an embodiment of the present application;

[0035] Figure 7 It is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to make those of ordinary skill in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are only examples consistent with some aspects of the present application as detailed in the attached claims.

[0038] The following is a detailed description of the night driving display method provided by the embodiment of the present application through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0039] Figure 1 This is one of the flow charts of a method for displaying nighttime driving provided by an embodiment of the present application. Figure 1 As shown, the method for displaying night driving provided by the embodiment of the present application may include the following steps:

[0040] Step 101 , collecting ambient light in front of a vehicle at a first moment to obtain first ambient light.

[0041] In some embodiments, the vehicle may periodically and actively adjust the light transmittance of the front windshield module and the projected content of the head-up display (HUD) module. In this embodiment, the vehicle may execute step 101 when the periodic adjustment time is reached.

[0042] In other embodiments, the vehicle may passively adjust the light transmittance of the front windshield module and the projected content of the HUD module based on the adjustment instruction input by the user. In this embodiment, the vehicle may execute step 101 upon receiving the adjustment instruction input by the user.

[0043] The first moment can be understood as the execution moment of step 101 , and the first ambient light is the current ambient light in front of the vehicle.

[0044] The embodiments of the present application do not limit the collection method of ambient light. In some embodiments, ambient light can be collected by a camera. In other embodiments, ambient light can be collected by a light sensor, and further, the light sensor can be a red, green, blue-infrared (RGBIR) sensor, but is not limited thereto.

[0045] Step 102: determining a first light intensity level of the first ambient light based on a comparison result between a first light intensity value of the first ambient light and a light intensity threshold, wherein the first light intensity level is positively correlated with the first light intensity value.

[0046] After the first ambient light is collected in step 101, the light intensity level of the first ambient light may be determined first, so as to adjust the light transmittance of the front windshield module and the projection content of the HUD module based on the light intensity level of the first ambient light.

[0047] In a specific implementation, light characteristics may be extracted from the first ambient light to obtain a light intensity value of the first ambient light, that is, a first light intensity value.

[0048] In an embodiment of the present application, P light intensity thresholds may be set to divide the light intensity level from weak to strong into P+1 levels, wherein the light intensity value interval corresponding to the i-th light intensity level is: [the i-th - 1st light intensity threshold arranged from small to large among the P light intensity thresholds, the i-th light intensity threshold), when i is 1, the i-th - 1st light intensity threshold is 0, and when i is P, the i-th light intensity threshold is positive infinity. In one example, 7 light intensity thresholds may be set to divide the light intensity level from weak to strong into 8 levels L1 to L8, where L1 is extremely dark and L8 is extremely bright. In another example, 2 light intensity thresholds may be set to divide the light intensity level from weak to strong into 3 levels.

[0049] After obtaining the first light intensity value, the first light intensity value may be compared with P light intensity thresholds to determine the light intensity value interval into which the first light intensity value falls, and then the light intensity level corresponding to the light intensity value interval is determined as the first light intensity level.

[0050] The first light intensity level is positively correlated with the first light intensity value, that is, the larger the first light intensity value is, the stronger the first light intensity level is, and vice versa. In other words, the weaker the ambient light in front of the vehicle is, the weaker the light intensity level in front of the vehicle is; the stronger the ambient light in front of the vehicle is, the stronger the light intensity level in front of the vehicle is.

[0051] Step 103, based on a first correspondence between light intensity level and light transmittance, adjust the light transmittance of the front windshield module of the vehicle to a first light transmittance corresponding to the first light intensity level, wherein in the first correspondence, each light intensity level is negatively correlated with the light transmittance corresponding to the light intensity level.

[0052] In the embodiment of the present application, a first correspondence between light intensity level and light transmittance can be preset. In the first correspondence, each light intensity level is negatively correlated with its corresponding light transmittance, that is, the weaker the light intensity level, the higher its corresponding light transmittance, and vice versa.

[0053] It should be noted that, in the first corresponding relationship, the light transmittances corresponding to the various light intensity levels may be different or partially the same, and may be set specifically according to actual needs, and the embodiments of the present application do not limit this.

[0054] In some embodiments, in the first corresponding relationship, the maximum light transmittance may be 100%, and the minimum light transmittance may be 30%, but is not limited thereto.

[0055] The embodiment of the present application does not limit the expression form of the first corresponding relationship, and the specific description is as follows.

[0056] In some embodiments, the first correspondence may be expressed as a table. In this embodiment, the first correspondence may include each light intensity level obtained by division, and its corresponding light transmittance. In some embodiments, the light intensity level interval may be further divided, and a light intensity level interval may include at least one light intensity level, and a light intensity level interval corresponds to a light transmittance, that is, in this embodiment, the light transmittances corresponding to each light intensity level in a light intensity level interval are the same, and the light transmittances corresponding to light intensity levels in different light intensity level intervals are different. For example: in the above example of dividing the light intensity levels from weak to strong into 8 levels L1 to L8, L1 to L2 may be divided into the first light intensity level interval, L3 to L5 may be divided into the second light intensity level interval, and L6 to L8 may be divided into the third light intensity level interval.

[0057] In the above embodiment, after the first light intensity level is obtained, the first light transmittance corresponding to the first light intensity level can be determined by looking up a table, and then the light transmittance of the front windshield module of the vehicle is adjusted to the first light transmittance.

[0058] In other embodiments, the first corresponding relationship may be expressed as a relational expression. In this embodiment, after obtaining the first light intensity level, the first light intensity level may be substituted into the relational expression to obtain a first light transmittance corresponding to the first light intensity level, and then the light transmittance of the front windshield module of the vehicle is adjusted to the first light transmittance.

[0059] It can be understood that when the first ambient light is strong, such as when the vehicle is illuminated by the high beam in front, the first light intensity level is strong and the first light transmittance is small, so that the problem of blindness caused by the high beam can be avoided. When the first ambient light is weak, such as when there is no street light on the road, the first light intensity level is weak and the first light transmittance is large, so that more ambient light can enter the driver's field of vision. It can be seen that by adjusting the light transmittance of the front windshield module of the vehicle to the light transmittance corresponding to the light intensity level of the collected ambient light, the driver's forward field of vision can be improved, thereby improving the safety of driving at night.

[0060] Step 104, based on a second correspondence between light intensity levels and projection content, adjust the projection content of the head-up display module of the vehicle to the first projection content corresponding to the first light intensity level, wherein, in the second correspondence, for each light intensity level among the light intensity levels less than or equal to the first level threshold and the light intensity levels greater than the second level threshold, the projection content corresponding to the light intensity level includes the front image of the vehicle; the second level threshold is greater than the first level threshold.

[0061] In an embodiment of the present application, a second correspondence between light intensity levels and projected content may be pre-set. The second correspondence may be expressed as a table. In this embodiment, the second correspondence may include each light intensity level obtained by division, and its corresponding projected content. It should be noted that in the second correspondence, the projected content corresponding to each light intensity level may be different or partially the same, which may be set according to actual needs, and the embodiment of the present application does not limit this.

[0062] In some embodiments, the light intensity level intervals can be further divided. A light intensity level interval can include at least one light intensity level. A light intensity level interval corresponds to a projection content. That is, in this embodiment, the projection contents corresponding to each light intensity level in a light intensity level interval are the same, and the projection contents corresponding to light intensity levels in different light intensity level intervals are different.

[0063] In the second corresponding relationship, for the light intensity level less than or equal to the first level threshold, and the light intensity level greater than the second level threshold, the corresponding projection content may include the front image of the vehicle. The embodiment of the present application does not limit the method of acquiring the front image. In some embodiments, the front image and the ambient light can be collected by the same device or by different devices, which can be determined according to the actual situation.

[0064] If the light intensity level is less than or equal to the first level threshold, it means that the light intensity level is weak and the ambient light is poor. In this case, the front image of the vehicle is projected through the HUD module, so that the driver can understand the road conditions ahead through the front image of the vehicle and improve driving safety.

[0065] If the light intensity level is greater than the second level threshold, it means that the light intensity level is strong and the ambient light is strong. In this case, step 103 will reduce the light transmittance of the front windshield module. Although it can reduce the impact of the strong light in front on the driving line of sight, it will also reduce the brightness around the front vehicle. Therefore, by projecting the front image of the vehicle through the HUD module, the driver can understand the road conditions ahead through the front image of the vehicle, thereby improving driving safety.

[0066] The first level threshold and the second level threshold can be set based on actual needs. For example, in the above example where the light intensity levels are divided into 8 levels L1 to L8 from weak to strong, L2 can be set as the first level threshold and L5 can be set as the second level threshold.

[0067] In some embodiments, for a light intensity level less than or equal to the first level threshold, and a light intensity level greater than the second level threshold, the corresponding projection content may also include driving information. For a light intensity level greater than the first level threshold and less than or equal to the second level threshold, the corresponding projection content may only include driving information. Driving information may include: vehicle speed, remaining fuel, etc.

[0068] In other embodiments, for light intensity levels greater than the first level threshold and less than or equal to the second level threshold, the corresponding projection content may be empty. In this embodiment, if the first light intensity level is greater than the first level threshold and less than or equal to the second level threshold, since the corresponding projection content is empty, the HUD module may be turned off to reduce vehicle power consumption.

[0069] The night driving display method provided in the embodiment of the present application can determine the first light intensity level of the first ambient light collected in front of the vehicle at the first moment based on the comparison result of the first light intensity value of the first ambient light and the light intensity threshold.

[0070] Then, on the one hand, based on the first correspondence between the light intensity level and the light transmittance, the light transmittance of the front windshield module of the vehicle can be adjusted to the first light transmittance corresponding to the first light intensity level. Since the first light intensity level is positively correlated with the first light intensity value, the light transmittance in the first correspondence is negatively correlated with the corresponding light intensity level. In this way, when the ambient light is strong, such as when the vehicle is illuminated by the high beam in front, the light transmittance of the front windshield module can be lowered to avoid the problem of blinding by the high beam; when the ambient light is weak, the light transmittance of the front windshield module can be increased to allow more ambient light to enter the driver's field of vision. It can be seen that by adjusting the light transmittance of the front windshield module of the vehicle to the light transmittance corresponding to the light intensity level of the collected ambient light, the driver's forward field of vision can be improved, thereby improving the safety of driving at night.

[0071] On the other hand, based on the second correspondence between the light intensity level and the projection content, the projection content of the vehicle's head-up display module can be adjusted to the first projection content corresponding to the first light intensity level. Since the projection content corresponding to the lower or higher light intensity level in the second correspondence includes the front image of the vehicle, when the ambient light is strong, such as when the vehicle is illuminated by the high beam in front, or when the ambient light is weak, the front image of the vehicle can be projected through the head-up display module, so that the driver can obtain the road conditions ahead with the help of the front image, thereby improving the safety of driving at night.

[0072] The following describes a method for adjusting the light transmittance of the front windshield module.

[0073] In some embodiments, the front windshield module includes a front windshield glass, and a polarizing film disposed above the front windshield glass;

[0074] The step of adjusting the light transmittance of the front windshield module of the vehicle to a first light transmittance corresponding to the first light intensity level based on the first corresponding relationship between the light intensity level and the light transmittance includes:

[0075] Based on a first corresponding relationship between light intensity level and light transmittance, and a third corresponding relationship between light transmittance and polarization state, adjusting the polarization state of the polarizing film to a first polarization state corresponding to the first light intensity level;

[0076] Wherein, when the polarizing film is in the first polarization state, the light transmittance of the front windshield is the first light transmittance.

[0077] In this embodiment, the front windshield module includes a front windshield glass and a polarizing film, and the light transmittance of the front windshield glass can be adjusted by adjusting the polarization state of the polarizing film.

[0078] The third correspondence may be expressed as a table. The light transmittance included in the third correspondence may be the same as the light transmittance in the first correspondence. The third correspondence may include the light transmittance corresponding to each light intensity level in the first correspondence, and the polarization state corresponding to each light transmittance.

[0079] In this embodiment, the purpose of adjusting the polarization state of the polarizing film is to adjust the light transmittance of the front windshield, and the light transmittance is determined based on the light intensity level. Therefore, it can be understood that in the third corresponding relationship, the polarization state corresponding to the light transmittance corresponding to the same light intensity level is the same.

[0080] In the third corresponding relationship, the polarization state. Specifically, if the light transmittance is larger, the corresponding polarization state is closer to the circular polarization state; if the light transmittance is smaller, the corresponding polarization state is closer to the linear polarization state. Furthermore, the polarization state corresponding to the maximum light transmittance may be a circular polarization state, and the polarization state corresponding to the minimum light transmittance may be a linear polarization state.

[0081] In the above example of dividing the light intensity level from weak to strong into 8 levels L1 to L8, it is assumed that L1 to L2 correspond to light transmittance a, L3 to L5 correspond to light transmittance b, and L6 to L8 correspond to light transmittance c. The polarization state corresponding to light transmittance a can be a circular polarization state, and the amplitude of the light vector in each direction is the same. The polarization states corresponding to light transmittance b and light transmittance c can be elliptical polarization states, but the vertical light vector amplitude difference of the elliptical polarization state corresponding to light transmittance c is greater than the vertical light vector amplitude difference of the elliptical polarization state corresponding to light transmittance b.

[0082] In this embodiment, during specific implementation, after obtaining the first light intensity level, the first light transmittance corresponding to the first light intensity level can be determined through a first corresponding relationship, and then the first polarization state corresponding to the first light transmittance can be determined through a third corresponding relationship. By adjusting the polarization state of the polarization film in the windshield module to the first polarization state, the light transmittance of the front windshield of the windshield module is adjusted to the first light transmittance, so that the light transmittance of the front windshield matches the ambient light intensity in front of the vehicle, thereby improving the driver's field of vision and further improving the safety of driving at night.

[0083] Through this embodiment, the lower the intensity level of the ambient light in front of the vehicle, the closer the polarization state of the polarizing film is to the circular polarization state, allowing more ambient light to enter the driver's field of vision; the higher the intensity level of the ambient light in front of the vehicle, the closer the polarization state of the polarizing film is to the linear polarization state, filtering out more ambient light to avoid the problem of blinding caused by strong light. In this way, the driver's field of vision can be improved, thereby improving nighttime driving safety.

[0084] The polarization state of the polarizing film may be adjusted by, but is not limited to, the following methods.

[0085] In some embodiments, the polarizing film has at least two polarization states, and the at least two polarization states include the first polarization state;

[0086] The adjusting the polarization state of the polarizing film to a first polarization state corresponding to the first light intensity level based on the first corresponding relationship between the light intensity level and the light transmittance and the third corresponding relationship between the light transmittance and the polarization state comprises:

[0087] Based on a first correspondence between light intensity level and light transmittance, a third correspondence between light transmittance and polarization state, and a fourth correspondence between polarization state and driving voltage, adjusting the driving voltage of the polarizing film to a first driving voltage corresponding to the first light intensity level;

[0088] Wherein, under the driving of the first driving voltage, the polarization state of the polarization film is the first polarization state.

[0089] In this embodiment, the polarizing film has at least two polarization states, and the polarization state of the polarizing film is determined by the arrangement of liquid crystals in the liquid crystal layer in the polarizing film, and the arrangement of liquid crystals in the liquid crystal layer is determined based on the driving voltage of the polarizing film. Therefore, by adjusting the driving voltage of the polarizing film, the arrangement of liquid crystals in the polarizing film can be adjusted, thereby adjusting the polarization state of the polarizing film, and then adjusting the light transmittance of the front windshield.

[0090] The fourth corresponding relationship may be expressed as a table. The polarization states included in the fourth corresponding relationship may be the same as the polarization states in the third corresponding relationship. The fourth corresponding relationship may include the polarization states corresponding to the light transmittances in the third corresponding relationship and the driving voltages corresponding to the polarization states.

[0091] In the fourth corresponding relationship, the closer the polarization state is to the circular polarization state, the smaller the corresponding driving voltage is, and the closer the polarization state is to the linear polarization state, the larger the corresponding driving voltage is. In some embodiments, in the fourth corresponding relationship, the driving voltage corresponding to the circular polarization state can be 0, and the driving voltage corresponding to other polarization states can be greater than 0. In these embodiments, the polarization film is in a circular polarization state when it is not modulated by a voltage, and is in an elliptical polarization state when it is modulated by a voltage.

[0092] In this embodiment, when it is specifically implemented, after obtaining the first light intensity level, the first light transmittance corresponding to the first light intensity level can be determined through the first corresponding relationship, and then the first polarization state corresponding to the first light transmittance can be determined through the third corresponding relationship, and the first driving voltage corresponding to the first polarization state can be determined through the fourth corresponding relationship. After that, the polarization film can be driven by the first driving voltage so that the polarization film is in the first polarization state, so that the light transmittance of the front windshield of the front windshield module is adjusted to the first light transmittance, so that the light transmittance of the front windshield matches the ambient light intensity in front of the vehicle, thereby improving the driver's field of vision and thus improving the safety of driving at night.

[0093] Through this embodiment, the lower the intensity level of the ambient light in front of the vehicle, the lower the driving voltage of the polarizing film, the closer the polarization state of the polarizing film is to the circular polarization state, so that more ambient light enters the driver's field of vision; the higher the intensity level of the ambient light in front of the vehicle, the higher the driving voltage of the polarizing film, the closer the polarization state of the polarizing film is to the linear polarization state, and more ambient light is filtered out to avoid the problem of blinding caused by strong light. In this way, the driver's field of vision can be improved, thereby improving the safety of nighttime driving.

[0094] In some other embodiments, the number of the polarizing films is N, the N polarizing films correspond to N polarization states, the N polarizing films are driven in time division, the N polarizing films include a first polarizing film corresponding to the first polarization state, and N is an integer greater than 1;

[0095] The adjusting the polarization state of the polarizing film to a first polarization state corresponding to the first light intensity level based on the first corresponding relationship between the light intensity level and the light transmittance and the third corresponding relationship between the light transmittance and the polarization state comprises:

[0096] The first polarizing film is driven based on a first corresponding relationship between the light intensity level and the light transmittance and a third corresponding relationship between the light transmittance and the polarization state.

[0097] In this embodiment, different from the above-mentioned implementation, the front windshield module includes a polarizing film assembly, and the polarizing film assembly includes N polarizing films, each of which has only one polarization state, and each polarizing film has a different polarization state. Therefore, by selecting and driving different polarizing films, the polarizing film assembly can be in different polarization states, thereby making the front windshield glass in different light transmittances.

[0098] In this embodiment, when it is specifically implemented, after obtaining the first light intensity level, the first light transmittance corresponding to the first light intensity level can be determined through the first corresponding relationship, and then the first polarization state corresponding to the first light transmittance can be determined through the third corresponding relationship, and the first polarization film corresponding to the first polarization state can be found. After that, the first polarization film can be driven so that the polarization film assembly is in the first polarization state, so that the light transmittance of the front windshield of the front windshield module is adjusted to the first light transmittance, so that the light transmittance of the front windshield matches the ambient light intensity in front of the vehicle, thereby improving the driver's field of vision and thus improving nighttime driving safety.

[0099] Through this embodiment, the lower the intensity level of the ambient light in front of the vehicle, the closer the polarization state of the driven polarizing film is to the circular polarization state, allowing more ambient light to enter the driver's field of vision; the higher the intensity level of the ambient light in front of the vehicle, the closer the polarization state of the driven polarizing film is to the linear polarization state, filtering out more ambient light to avoid the problem of blinding caused by strong light. In this way, the driver's field of vision can be improved, thereby improving nighttime driving safety.

[0100] In some other embodiments, a liquid crystal layer is disposed in the front windshield module, and the liquid crystals in the liquid crystal layer have M arrangements corresponding to M light transmittances one by one, the M light transmittances include the first light transmittance corresponding to the first arrangement, and M is an integer greater than 1;

[0101] The step of adjusting the light transmittance of the front windshield module of the vehicle to a first light transmittance corresponding to the first light intensity level based on the first corresponding relationship between the light intensity level and the light transmittance includes:

[0102] Based on a first correspondence between light intensity level and light transmittance, a fifth correspondence between light transmittance and arrangement mode, and a sixth correspondence between arrangement mode and drive voltage, adjusting the drive voltage of the front windshield module to a second drive voltage corresponding to the first light intensity level;

[0103] Wherein, under the driving of the second driving voltage, the liquid crystals in the liquid crystal layer are in the first arrangement mode, and the light transmittance of the front windshield module is the first light transmittance.

[0104] In this embodiment, compared with the above embodiment, the front windshield module may not be provided with a polarizing film, but a liquid crystal layer may be provided in the front windshield. The liquid crystal layer may be arranged in different ways under the drive of different driving voltages, so that the front windshield has different light transmittances.

[0105] The fifth correspondence and the sixth correspondence may be expressed as a table. The light transmittance included in the fifth correspondence may be the same as the light transmittance in the first correspondence. In the fifth correspondence, the light transmittance corresponding to each light intensity level in the first correspondence and the arrangement corresponding to each light transmittance may be included. The arrangement included in the sixth correspondence is the same as the arrangement included in the fifth correspondence. In the sixth correspondence, the arrangement corresponding to each transmittance in the fifth correspondence and the driving voltage corresponding to each arrangement may be included.

[0106] In the sixth corresponding relationship, for an arrangement corresponding to a smaller light transmittance, the corresponding driving voltage may be smaller, and for an arrangement corresponding to a larger light transmittance, the corresponding driving voltage may be larger.

[0107] In this embodiment, when it is specifically implemented, after obtaining the first light intensity level, the first light transmittance corresponding to the first light intensity level can be determined through the first corresponding relationship, and then the first arrangement corresponding to the first light transmittance can be determined through the fifth corresponding relationship, and the second driving voltage corresponding to the first arrangement can be determined through the sixth corresponding relationship. After that, the front windshield module can be driven by the second driving voltage, so that the liquid crystal layer in the front windshield module is in the first arrangement, so that the light transmittance of the front windshield module is adjusted to the first light transmittance, so that the light transmittance of the front windshield glass matches the ambient light intensity in front of the vehicle, thereby improving the driver's field of vision and thus improving the safety of nighttime driving.

[0108] Through this embodiment, the lower the light intensity level of the ambient light in front of the vehicle, the greater the driving voltage of the front windshield module, the greater the light transmittance of the front windshield module, so that more ambient light enters the driver's field of vision; the greater the light intensity level of the ambient light in front of the vehicle, the lower the driving voltage of the front windshield module, the lower the light transmittance of the front windshield module, and more ambient light is filtered out to avoid the problem of blinding caused by strong light. In this way, the driver's field of vision can be improved, thereby improving the safety of nighttime driving.

[0109] The front image is described in detail below.

[0110] The embodiments of the present application do not limit the acquisition method and presentation form of the front image. In some embodiments, the front image can be a visible light image, such as an RGB image, or an infrared (IR) image, or a fused image obtained by fusing a visible light image and an IR image, which can be determined according to actual conditions and is not limited in the embodiments of the present application.

[0111] In some embodiments, before adjusting the projection content of the head-up display module of the vehicle to the first projection content corresponding to the first light intensity level based on the second correspondence between the light intensity level and the projection content, the method further includes:

[0112] Acquire a first visible light image and a first infrared light image in front of the vehicle collected at the first moment;

[0113] Based on a seventh corresponding relationship between the light intensity level and the infrared light image proportion, fusing the first visible light image and the first infrared light image to obtain a first fused image;

[0114] Among them, in the first fused image, the proportion of the first infrared light image is equal to the proportion of the infrared light image corresponding to the first light intensity level in the seventh corresponding relationship; when the first light intensity level is greater than the second level threshold, the first projected content includes the first fused image. Further, when the first light intensity level is less than or equal to the second level threshold, the first projected content may not include the first fused image. In this case, the HUD module may not call the projected fused image by default to avoid interfering with the driver's driving attention, but the driver can enable or disable the HUD module's call for the fused image according to the scenario.

[0115] In this embodiment, the proportion of the IR image in the fused image may be determined based on the light intensity level of the ambient light.

[0116] A seventh correspondence between the light intensity level and the infrared light image ratio may be preset. In the seventh correspondence, the closer the light intensity level is to the center, the greater the IR image ratio is, and vice versa. Furthermore, the IR image ratio corresponding to the maximum light intensity level may be greater than the IR image ratio corresponding to the minimum light intensity level. In this way, when the ambient light is strong or weak, the brightness of the front image may be reduced, thereby reducing the interference of the front image to the driver and further improving nighttime driving safety.

[0117] It should be noted that, in the seventh corresponding relationship, the proportions of IR images corresponding to various light intensity levels may be different or partially the same, and may be set specifically according to actual needs, and the embodiments of the present application do not limit this.

[0118] The embodiment of the present application does not limit the expression form of the seventh corresponding relationship, which is specifically described as follows.

[0119] In some embodiments, the seventh correspondence may be expressed as a table. In this embodiment, the seventh correspondence may include each light intensity level obtained by division, and its corresponding IR image ratio. In some embodiments, the light intensity level interval may be further divided, and a light intensity level interval may include at least one light intensity level, and a light intensity level interval corresponds to an IR image ratio, that is, in this embodiment, the IR image ratios corresponding to each light intensity level in a light intensity level interval are the same, and the IR image ratios corresponding to light intensity levels in different light intensity level intervals are different. For example: in the above example of dividing the light intensity levels from weak to strong into 8 levels L1 to L8, L1 to L2 may be divided into the first light intensity level interval, L3 to L5 may be divided into the second light intensity level interval, and L6 to L8 may be divided into the third light intensity level interval.

[0120] In the above embodiment, after acquiring the first light intensity level, the first visible light image and the first IR image, the proportion of the IR image corresponding to the first light intensity level can be determined by looking up a table, and then the first visible light image and the first IR image can be fused according to the IR image proportion to obtain a first fused image, so that the proportion of the first IR image in the first fused image is the proportion of the IR image corresponding to the first light intensity level.

[0121] In other embodiments, the seventh corresponding relationship may be expressed as a relational expression. In this embodiment, after obtaining the first light intensity level, the first light intensity level may be substituted into the relational expression to obtain the IR image ratio corresponding to the first light intensity level, and then the first visible light image and the first IR image may be fused according to the IR image ratio to obtain a first fused image, so that the ratio of the first IR image in the first fused image is the IR image ratio corresponding to the first light intensity level.

[0122] The embodiments of the present application do not limit the acquisition method of the visible light image and the infrared image. In some embodiments, the visible light image and the infrared image can be obtained by processing the ambient light collected by the RGBIR sensor (RGBIR-sensor), but is not limited thereto.

[0123] In this embodiment, the proportion of the IR image in the fused image can be adjusted based on the light intensity level of the ambient light so that the brightness of the fused image matches the intensity of the ambient light. In this way, the interference of the front image to the driver can be reduced, further improving nighttime driving safety.

[0124] In some embodiments, after adjusting the projection content of the head-up display module of the vehicle to the first projection content corresponding to the first light intensity level based on the second correspondence between the light intensity level and the projection content, the method further includes:

[0125] When the first projection content includes the driving information of the vehicle and the front image, the head-up display module is controlled to project the driving information directly in front of the driving seat of the vehicle and to project the front image to the side of the driving seat.

[0126] In specific implementation, the front image can be projected on the right or left side of the driving seat, such as 15 cm to the right of the driving seat.

[0127] In this embodiment, the HUD module can project the driving information in front of the driver's seat and project the front image of the vehicle to the side of the driver's seat. In this way, the interference of the front image to the driver can be further reduced, thereby improving nighttime driving safety.

[0128] The embodiment of the present application also provides a display system for night driving, such as Figure 2 As shown, it may include a light intensity sensor module 21 , a front windshield module (may be simply referred to as a windshield module) 22 and a HUD module 23 .

[0129] The light intensity sensor module 21 is arranged outside the front windshield module 22, and is used to collect the ambient light in front of the vehicle, and output the light intensity level of the ambient light based on the light intensity value of the ambient light, wherein the light intensity level of the ambient light is positively correlated with the light intensity value of the ambient light;

[0130] The front windshield module 22 is electrically connected to the light intensity sensor module 21, and the light transmittance of the front windshield module 22 is determined based on the light intensity level of the ambient light, wherein the light transmittance of the front windshield module 22 is negatively correlated with the light intensity level of the ambient light;

[0131] The HUD module 23 is electrically connected to the light intensity sensor module 21, and the projection content of the HUD module 23 is determined based on the light intensity level of the ambient light, wherein when the light intensity level of the ambient light is less than or equal to the light intensity level of the first level threshold, or greater than the second level threshold, the projection content of the HUD module 23 includes the front image of the vehicle.

[0132] In some embodiments, Figure 3 As shown, the light intensity sensor module 21 may include an RGBIR sensor 211 , an image processing unit 212 , a light intensity statistics unit 213 and a dual-light fusion unit 214 .

[0133] The RGBIR sensor 211 is used to output an RGBIR data stream based on the collected ambient light.

[0134] The image processing unit 212 is used to output an RGB image and an IR image based on the RGBIR data stream. In specific implementation, the image processing unit 212 can process the RGBIR data stream and output an RGB image (ie, RGB data) and an IR image (IR data).

[0135] The light intensity statistics unit 213 is used to output the light intensity level of the ambient light based on the RGB image.

[0136] The dual light fusion unit 214 is used to fuse the RGB image and the IR image to obtain a fused image. In specific implementation, the dual light fusion unit 214 can fuse the RGB image and the IR image to obtain a fused image based on the IR image proportion corresponding to the light intensity level output by the light intensity statistics unit.

[0137] In some embodiments, the front windshield module 22 may include a front windshield glass and a polarizing film disposed above the front windshield glass; wherein the light transmittance of the front windshield glass is determined based on the polarization state of the polarizing film, and the polarization state of the polarizing film is determined based on the light intensity level of the ambient light. Further, the number of polarizing films may be 1 or N.

[0138] In some embodiments, the HUD module 23 may include a light intensity judgment unit and a projection unit, wherein the light intensity judgment unit is used to call the projection unit to project a fused image when the light intensity level of the ambient light is less than or equal to the light intensity level of a first level threshold, or greater than a second level threshold.

[0139] For easier understanding, see Figure 4 .exist Figure 4 In the embodiment, the HUD module 23 may include a first light intensity judgment unit 231, a second light intensity judgment unit 232 and a HUD projection device 233. The first light intensity judgment unit 231 may judge whether the light intensity level of the ambient light is greater than L5, and the second light intensity judgment unit 232 may judge whether the light intensity level of the ambient light is less than or equal to L2. If the first light intensity judgment unit 231 determines that the light intensity level of the ambient light is greater than L5, the HUD projection device 233 may be enabled to project driving data (i.e., driving information) and fusion data (i.e., fusion image). If the first light intensity judgment unit 231 determines that the light intensity level of the ambient light is less than or equal to L5, and the second light intensity judgment unit 232 determines that the light intensity level of the ambient light is greater than L2, the HUD projection device 233 may not be enabled to project fusion data. If the second light intensity judgment unit 232 determines that the light intensity level of the ambient light is less than or equal to L2, the driver may be reminded to concentrate.

[0140] In addition, in some embodiments, the HUD projection device 233 can project the fusion data under the operation of the user to improve the projection flexibility of the HUD projection device.

[0141] It should be noted that the night driving display system of the embodiment of the present application can execute the night driving display method of the embodiment of the present application and achieve the same beneficial effects. For details, please refer to the above description and will not be repeated here.

[0142] In the embodiments of the present application, the various embodiments may be implemented in combination with each other without conflict, or may be implemented independently. The specific settings may be based on actual needs, and the embodiments of the present application are not limited to this.

[0143] The display method for night driving in the embodiment of the present application can adaptively resist halation by identifying the intensity of the light in front and adaptively modulating the polarization state of the polarizer and the HUD projection data, thereby solving the impact of high beam lights on driving safety when driving at night.

[0144] like Figure 2 As shown, the embodiment of the present application provides a display system for nighttime driving, which may include a light intensity sensor module, a windshield module, and a HUD projection module. The main function of the light intensity sensor module is to count the current opposite light intensity, such as Figure 3 As shown, it may include an RGBIR-sensor, an image processing unit, a light intensity statistics unit, and a dual light fusion unit. The RGBIR-sensor performs statistics on the front image, and the current light intensity level Lx and fusion data are obtained after algorithm processing. In some embodiments, the light intensity level can be divided into 8 levels L1 to L8 from weak to strong, L1 is extremely dark, and L8 is extremely bright.

[0145] According to different levels, the RGB and IR images are fused in different proportions. When the light intensity is judged to be L2, the visible light is weak, and the infrared part of the light intensity accounts for 80% of the fused image; when the light intensity is L3-L5, the visible light is moderate, and the infrared part of the light intensity accounts for 30% of the fused image; when the light intensity is L6-L8, it is considered that the visible light intensity is strong, and it is difficult to clearly distinguish the target ahead, affecting the driver's driving safety. The infrared part of the light intensity accounts for 80% of the fused image, and HUD is enabled for screen projection as a driving reference.

[0146] At the same time, different light intensity levels can also provide input for the modulation of other modules; the main function of the windshield module is to modulate the transmittance of light according to different light intensity levels. In some embodiments, the windshield module includes a windshield glass and a polarizing film. The crystals in the polarizing film will change to different degrees of polarization states under different voltage driving, thereby achieving the effect of modulation for different high beam intensity levels. When the light intensity level is between L1 and L2, the polarizing film is not modulated by voltage and is in a circular polarization state. The amplitudes of light vectors in all directions are the same, and the current light transmittance is the highest. When the light intensity level is between L3 and L5, the polarizing film is modulated by voltage for the first level. At this time, the polarizing film is in an elliptical polarization state, which slightly filters the incident light. It is believed that in the current polarization state, the driver can clearly see the visual scene around the vehicle, and the HUD module will not automatically call the fused image data. However, the driver can manually turn on or off the HUD module's call for fused image data according to the actual scene. When the level reaches L6 to L8, the polarizing film is modulated by voltage for the second level. At this time, the polarizing film is still in an elliptical polarization state, but the amplitude of light vectors in the vertical direction differs more, thereby further reducing the impact of strong light ahead on the driving line of sight, but it will also reduce the target brightness around the vehicle ahead. Therefore, at the same time, the HUD module will automatically call the fused image data and project it into the driver's field of view.

[0147] like Figure 4 As shown, the HUD module may include a light intensity judgment unit and a HUD projection device. The light intensity judgment unit may be used to perform logical judgment according to the current light intensity level Lx. When the light intensity level reaches a certain level, the HUD projection device may be enabled to project the fused data 15 cm to the right of the driver's normal field of view. When the driver's line of sight moves slightly to the right, on the one hand, the high beam in the left front may be reduced, and on the other hand, the fused image may be used to quickly determine whether there are any safety hazards ahead of the vehicle.

[0148] like Figure 5 As shown, the method for displaying nighttime driving may include the following steps:

[0149] S1: Take the light coming from the opposite direction as the input of the system.

[0150] The system is a nighttime driving display system. Figure 3 As shown, the incident light is received by the RGBIR-sensor, and the Bayer pattern type of the sensor takes into account both RGB and IR pixels. The RGB part is used to receive the visible light in front, and the IR part is used to receive the far infrared light emitted and reflected by the light board.

[0151] S2: Extract different light intensity features through light data.

[0152] The light intensity characteristic is the light intensity value. Figure 3 As shown in the figure, the incident light contains RGB and IR data streams, and the RGB and IR parts are separated after image processing. The RGB part is used to count the light intensity level, and the IR part data is used to fuse with the RGB image according to different intensity levels. Because the RGB and IR images are generated by the same sensor at the same time, the fusion does not require additional registration. It only needs to be fused in different proportions according to the light intensity level counted by the visible light. The fusion of visible light and infrared light is always ongoing. When the light intensity is between L6 and L8, the HUD will automatically call the fusion data. In other cases, the HUD module will not call the projected fusion image data by default to avoid interfering with the driver's driving attention, but the driver can enable or disable the HUD module's call for fusion image data according to the scene.

[0153] S3: Determine the light scene category based on light intensity features.

[0154] Light scene categories, which can be referred to as scenes, are light intensity levels. Light intensity levels are divided into L1-L8 from weak to strong, and are used as input for other modules.

[0155] S4: Regulate the current of the polarization film according to the scene.

[0156] The current of the polarizing film can be achieved by adjusting the driving voltage of the polarizing film. According to different light intensity levels Lx, the voltage of the polarizing film is modulated. The larger the Lx level, the more the polarizing film tends to be linearly polarized, so that the strong light passing through is weakened. At the same time, the light projected by the HUD is reflected back to the driver's line of sight by the windshield, so as to achieve the purpose of enhancing the driver's line of sight.

[0157] S5: Adjust the HUD projection data according to the scene.

[0158] like Figure 4 As shown, when the Lx level is L1~L2, it is considered that the light ahead is dim, and the system will remind the driver to concentrate; when it is in L3~L5, it is considered that the current high beam intensity is large, and in the current polarization film state, the driver can clearly see the scene around the vehicle, and there is no need for HUD to project fusion data, but the driver can manually turn on or off the HUD module's call for fusion image data according to the actual scene; when the Lx level is greater than L5, it is considered that the current high beam intensity is large, and in the current polarization film state, the driver cannot clearly identify the safety hazards ahead of the vehicle. At this time, the HUD system will automatically start calling the dual-light fusion data and project it 15cm to the right of the driver's normal field of vision.

[0159] At all brightness levels, the driver can manually turn on or off the HUD module's call and projection of fused image data to meet the individual needs of different drivers.

[0160] Finally, the system projects the dual-light fusion data.

[0161] The light intensity sensor at the front of the vehicle receives the light coming from the opposite direction, and then performs a feature analysis on the current light. Based on the analyzed light intensity features, the current light intensity level is obtained, the current of the polarizing film is modulated according to different intensity levels, and the HUD projection corresponding data is adjusted. If the scene is determined to be high beam, the polarizing film will change the polarization direction under the drive of the current, so that the intensity of the incident light from the opposite direction is reduced, but at the same time it will darken the surrounding scene in front. By introducing the HUD screen, the fused data is projected at the corresponding position of the screen, so that the driver will not be blinded by the opposite high beam while capturing safety hazards within a certain distance in front of the car.

[0162] In the embodiment of the present application, a light intensity sensor can be used to capture the intensity of visible light in front in real time, and determine and divide the light intensity levels. For different light intensity levels, the visible light transmittance of the windshield module and the projection data of the HUD module can be adaptively adjusted in real time, so that the driver can avoid blinding due to high beams and clearly identify safety hazards ahead of the vehicle.

[0163] It should be noted that the display method for night driving provided in the embodiment of the present application can be executed by a display device for night driving, or a control module in the display device for night driving for executing the display method for night driving.

[0164] Based on the same inventive concept as the above-mentioned night driving display method, the present application also provides a night driving display device. Figure 6 The display device for night driving provided in an embodiment of the present application is described in detail.

[0165] Figure 6 The figure is a schematic structural diagram of a display device for nighttime driving according to an exemplary embodiment.

[0166] like Figure 6 As shown, the display device for night driving may include:

[0167] A collection module 601, used for collecting the ambient light in front of the vehicle at a first moment to obtain the first ambient light;

[0168] a determination module 602, configured to determine a first light intensity level of the first ambient light based on a comparison result of the first light intensity value of the first ambient light and a light intensity threshold, wherein the first light intensity level is positively correlated with the first light intensity value;

[0169] A first adjustment module 603, configured to adjust the light transmittance of the front windshield module of the vehicle to a first light transmittance corresponding to the first light intensity level based on a first correspondence between light intensity levels and light transmittances, wherein in the first correspondence, each light intensity level is negatively correlated with the light transmittance corresponding to the light intensity level;

[0170] The second adjustment module 604 is used to adjust the projection content of the head-up display module of the vehicle to the first projection content corresponding to the first light intensity level based on a second correspondence between the light intensity level and the projection content, wherein in the second correspondence, for each light intensity level among the light intensity levels less than or equal to the first level threshold and the light intensity levels greater than the second level threshold, the projection content corresponding to the light intensity level includes the front image of the vehicle; and the second level threshold is greater than the first level threshold.

[0171] In some embodiments, the front windshield module includes a front windshield glass, and a polarizing film disposed above the front windshield glass;

[0172] The first adjustment module is specifically used to:

[0173] Based on a first corresponding relationship between light intensity level and light transmittance, and a third corresponding relationship between light transmittance and polarization state, adjusting the polarization state of the polarizing film to a first polarization state corresponding to the first light intensity level;

[0174] Wherein, when the polarizing film is in the first polarization state, the light transmittance of the front windshield is the first light transmittance.

[0175] In some embodiments, the polarizing film has at least two polarization states, the at least two polarization states including the first polarization state;

[0176] The first adjustment module is specifically used to:

[0177] Based on a first correspondence between light intensity level and light transmittance, a third correspondence between light transmittance and polarization state, and a fourth correspondence between polarization state and driving voltage, adjusting the driving voltage of the polarizing film to a first driving voltage corresponding to the first light intensity level;

[0178] Wherein, under the driving of the first driving voltage, the polarization state of the polarization film is the first polarization state.

[0179] In some embodiments, the number of the polarizing films is N, the N polarizing films correspond to N polarization states, the N polarizing films are driven in time-sharing manner, the N polarizing films include a first polarizing film corresponding to the first polarization state, and N is an integer greater than 1;

[0180] The first adjustment module is specifically used to:

[0181] The first polarizing film is driven based on a first corresponding relationship between the light intensity level and the light transmittance and a third corresponding relationship between the light transmittance and the polarization state.

[0182] In some embodiments, a liquid crystal layer is disposed in the front windshield module, and the liquid crystals in the liquid crystal layer have M arrangements corresponding to M light transmittances, the M light transmittances include the first light transmittance corresponding to the first arrangement, and M is an integer greater than 1;

[0183] The first adjustment module is specifically used to:

[0184] Based on a first correspondence between light intensity level and light transmittance, a fifth correspondence between light transmittance and arrangement mode, and a sixth correspondence between arrangement mode and driving voltage, adjusting the driving voltage of the front windshield module to a second driving voltage corresponding to the first light intensity level;

[0185] Wherein, under the driving of the second driving voltage, the liquid crystals in the liquid crystal layer are in the first arrangement mode, and the light transmittance of the front windshield module is the first light transmittance.

[0186] In some embodiments, the apparatus further comprises:

[0187] An acquisition module, used to acquire a first visible light image and a first infrared light image in front of the vehicle collected at the first moment;

[0188] a fusion module, configured to fuse the first visible light image and the first infrared light image based on a seventh corresponding relationship between the light intensity level and the infrared light image proportion to obtain a first fused image;

[0189] Among them, in the first fused image, the proportion of the first infrared light image is equal to the proportion of the infrared light image corresponding to the first light intensity level in the seventh corresponding relationship; when the first light intensity level is greater than the second level threshold, the first projection content includes the first fused image.

[0190] In some embodiments, the apparatus further comprises:

[0191] A control module is used to control the head-up display module to project the driving information directly in front of the driving seat of the vehicle and to project the front image to the side of the driving seat when the first projection content includes the driving information of the vehicle and the front image.

[0192] The night driving display device provided in the embodiment of the present application can be used to execute the night driving display method provided in the above-mentioned method embodiments. The implementation principles and technical effects are similar and will not be described here for the sake of brief introduction.

[0193] Based on the same inventive concept, an embodiment of the present application also provides an electronic device.

[0194] Figure 7 Schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 7 As shown, the electronic device may include a processor 701 and a memory 702 storing computer programs or instructions.

[0195] Specifically, the processor 701 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiment of the present invention.

[0196] The memory 702 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 702 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In appropriate cases, the memory 702 may include a removable or non-removable (or fixed) medium. In appropriate cases, the memory 702 may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory 702 is a non-volatile solid-state memory. The memory may include a read-only memory (ROM), a random access memory (RAM), a disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Therefore, typically, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described in the night driving display method provided in the above-mentioned embodiments.

[0197] The processor 701 reads and executes the computer program instructions stored in the memory 702 to implement any one of the night driving display methods in the above embodiments.

[0198] In one example, the electronic device may further include a communication interface 703 and a bus 710. Figure 7 As shown, the processor 701, the memory 702, and the communication interface 703 are connected via a bus 710 and communicate with each other.

[0199] The communication interface 703 is mainly used to implement the communication between the modules, devices, units and / or devices in the embodiment of the present invention.

[0200] Bus 710 includes hardware, software or both, and the parts of electronic equipment are coupled to each other. For example, but not limitation, bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 710 may include one or more buses. Although the embodiment of the present invention describes and shows a specific bus, the present invention considers any suitable bus or interconnection.

[0201] The electronic device can execute the night driving display method in the embodiment of the present invention, thereby realizing Figure 1 A method for displaying nighttime driving is described.

[0202] In addition, in combination with the night driving display method in the above embodiment, the embodiment of the present invention can provide a readable storage medium to implement. The readable storage medium stores program instructions, and when the program instructions are executed by the processor, any of the night driving display methods in the above embodiment is implemented.

[0203] In addition, in combination with the night driving display method in the above embodiment, the embodiment of the present invention can provide a computer program product to implement. When the instructions in the computer program product are executed by the processor of the electronic device, the electronic device can execute any of the night driving display methods in the above embodiment.

[0204] It should be clear that the present invention is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present invention.

[0205] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present invention are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0206] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiments, or in a different order from the embodiments, or several steps can be performed simultaneously.

[0207] The above reference is according to the method of the embodiment of the present application, the flow chart of the device (system) and the computer program product and / or the block diagram described various aspects of the present application.It should be understood that each square box in the flow chart and / or the block diagram and the combination of each square box in the flow chart and / or the block diagram can be realized by computer program instructions.These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the realization of the function / action specified in one or more square boxes of the flow chart and / or the block diagram.Such a processor can be but is not limited to a general-purpose processor, a special-purpose processor, a special application processor or a field programmable logic circuit.It can also be understood that each square box in the block diagram and / or the flow chart and the combination of the square boxes in the block diagram and / or the flow chart can also be realized by the dedicated hardware that performs the specified function or action, or can be realized by the combination of dedicated hardware and computer instructions.

[0208] The above is only a specific implementation of the present invention. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the system, module and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.

Claims

1. A method for displaying nighttime driving, characterized in that: include: Collecting the ambient light in front of the vehicle at a first moment to obtain the first ambient light; Determining a first light intensity level of the first ambient light based on a comparison result of the first light intensity value of the first ambient light and a light intensity threshold, wherein the first light intensity level is positively correlated with the first light intensity value; Based on a first correspondence between light intensity levels and light transmittances, adjusting the light transmittance of the front windshield module of the vehicle to a first light transmittance corresponding to the first light intensity level, wherein in the first correspondence, each light intensity level is negatively correlated with the light transmittance corresponding to the light intensity level; Based on a second correspondence between light intensity levels and projection content, the projection content of the head-up display module of the vehicle is adjusted to the first projection content corresponding to the first light intensity level, wherein, in the second correspondence, for each light intensity level among the light intensity levels less than or equal to the first level threshold and the light intensity levels greater than the second level threshold, the projection content corresponding to the light intensity level includes the front image of the vehicle; and the second level threshold is greater than the first level threshold.

2. The method according to claim 1, characterized in that The front windshield module includes a front windshield glass and a polarizing film arranged above the front windshield glass; The step of adjusting the light transmittance of the front windshield module of the vehicle to a first light transmittance corresponding to the first light intensity level based on the first corresponding relationship between the light intensity level and the light transmittance includes: Based on a first corresponding relationship between light intensity level and light transmittance, and a third corresponding relationship between light transmittance and polarization state, adjusting the polarization state of the polarizing film to a first polarization state corresponding to the first light intensity level; Wherein, when the polarizing film is in the first polarization state, the light transmittance of the front windshield is the first light transmittance.

3. The method according to claim 2, characterized in that The polarizing film has at least two polarization states, and the at least two polarization states include the first polarization state; The adjusting the polarization state of the polarizing film to a first polarization state corresponding to the first light intensity level based on the first corresponding relationship between the light intensity level and the light transmittance and the third corresponding relationship between the light transmittance and the polarization state comprises: Based on a first correspondence between light intensity level and light transmittance, a third correspondence between light transmittance and polarization state, and a fourth correspondence between polarization state and driving voltage, adjusting the driving voltage of the polarizing film to a first driving voltage corresponding to the first light intensity level; Wherein, under the driving of the first driving voltage, the polarization state of the polarization film is the first polarization state.

4. The method according to claim 2, characterized in that: The number of the polarizing films is N, the N polarizing films correspond to N polarization states, the N polarizing films are driven in time division, the N polarizing films include a first polarizing film corresponding to the first polarization state, and N is an integer greater than 1; The adjusting the polarization state of the polarizing film to a first polarization state corresponding to the first light intensity level based on the first corresponding relationship between the light intensity level and the light transmittance and the third corresponding relationship between the light transmittance and the polarization state comprises: The first polarizing film is driven based on a first corresponding relationship between the light intensity level and the light transmittance and a third corresponding relationship between the light transmittance and the polarization state.

5. The method according to claim 1, characterized in that A liquid crystal layer is disposed in the front windshield module, and the liquid crystals in the liquid crystal layer have M arrangements corresponding to M light transmittances, the M light transmittances include the first light transmittance corresponding to the first arrangement, and M is an integer greater than 1; The step of adjusting the light transmittance of the front windshield module of the vehicle to a first light transmittance corresponding to the first light intensity level based on the first corresponding relationship between the light intensity level and the light transmittance includes: Based on a first correspondence between light intensity level and light transmittance, a fifth correspondence between light transmittance and arrangement mode, and a sixth correspondence between arrangement mode and drive voltage, adjusting the drive voltage of the front windshield module to a second drive voltage corresponding to the first light intensity level; Wherein, under the driving of the second driving voltage, the liquid crystals in the liquid crystal layer are in the first arrangement mode, and the light transmittance of the front windshield module is the first light transmittance.

6. The method according to claim 1, characterized in that Before adjusting the projection content of the head-up display module of the vehicle to the first projection content corresponding to the first light intensity level based on the second corresponding relationship between the light intensity level and the projection content, the method further includes: Acquire a first visible light image and a first infrared light image in front of the vehicle collected at the first moment; Based on a seventh corresponding relationship between the light intensity level and the infrared light image proportion, fusing the first visible light image and the first infrared light image to obtain a first fused image; Among them, in the first fused image, the proportion of the first infrared light image is equal to the proportion of the infrared light image corresponding to the first light intensity level in the seventh corresponding relationship; when the first light intensity level is greater than the second level threshold, the first projection content includes the first fused image.

7. The method according to claim 1, characterized in that After adjusting the projection content of the head-up display module of the vehicle to the first projection content corresponding to the first light intensity level based on the second corresponding relationship between the light intensity level and the projection content, the method further includes: When the first projection content includes the driving information of the vehicle and the front image, the head-up display module is controlled to project the driving information directly in front of the driving seat of the vehicle and to project the front image to the side of the driving seat.

8. A nighttime driving display system, characterized in that: include: Light intensity sensor module, front windshield module and head-up display module; The light intensity sensor module is arranged outside the front windshield module, and is used to collect the ambient light in front of the vehicle, and output the light intensity level of the ambient light based on the light intensity value of the ambient light, wherein the light intensity level of the ambient light is positively correlated with the light intensity value of the ambient light; The front windshield module is electrically connected to the light intensity sensor module, and the light transmittance of the front windshield module is determined based on the light intensity level of the ambient light, wherein the light transmittance of the front windshield module is negatively correlated with the light intensity level of the ambient light; The head-up display module is electrically connected to the light intensity sensor module, and the projected content of the head-up display module is determined based on the light intensity level of the ambient light, wherein when the light intensity level of the ambient light is less than or equal to the light intensity level of a first level threshold, or greater than a second level threshold, the projected content of the head-up display module includes the front image of the vehicle.

9. The nighttime driving display system according to claim 8, characterized in that: The light intensity sensor module includes an RGBIR sensor, an image processing unit, a light intensity statistics unit and a dual-light fusion unit, wherein the RGBIR sensor is used to output an RGBIR data stream based on the collected ambient light, the image processing unit is used to output an RGB image and an IR image based on the RGBIR data stream, the light intensity statistics unit is used to output the light intensity level of the ambient light based on the RGB image, and the dual-light fusion unit is used to fuse the RGB image and the IR image to obtain a fused image; The front windshield module includes a front windshield glass and a polarizing film disposed above the front windshield glass; wherein the light transmittance of the front windshield glass is determined based on the polarization state of the polarizing film, and the polarization state of the polarizing film is determined based on the light intensity level of the ambient light; The head-up display module includes a light intensity judgment unit and a projection unit, wherein the light intensity judgment unit is used to call the projection unit to project the fused image when the light intensity level of the ambient light is less than or equal to the light intensity level of a first level threshold, or greater than a second level threshold.

10. A display device for nighttime driving, characterized in that: include: A collection module, used for collecting the ambient light in front of the vehicle at a first moment to obtain the first ambient light; a determination module, configured to determine a first light intensity level of the first ambient light based on a comparison result of the first light intensity value of the first ambient light and a light intensity threshold, wherein the first light intensity level is positively correlated with the first light intensity value; a first adjustment module, configured to adjust the light transmittance of the front windshield module of the vehicle to a first light transmittance corresponding to the first light intensity level based on a first correspondence between light intensity levels and light transmittances, wherein in the first correspondence, each light intensity level is negatively correlated with the light transmittance corresponding to the light intensity level; A second adjustment module is used to adjust the projection content of the head-up display module of the vehicle to the first projection content corresponding to the first light intensity level based on a second correspondence between the light intensity level and the projection content, wherein in the second correspondence, for each light intensity level among the light intensity levels less than or equal to the first level threshold and the light intensity levels greater than the second level threshold, the projection content corresponding to the light intensity level includes the front image of the vehicle; and the second level threshold is greater than the first level threshold.

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