Vehicle sunshade control method and device

Abstract

The present invention belongs to the technical field of vehicle sunshade control, and provides a vehicle sunshade control method and device, including the steps of: obtaining image information containing the driver's body collected by a visual module installed in the driving area of ​​the vehicle; determining a first distance value between the illumination position and the driver's eye point in the image based on the image information, and adjusting the shading degree of the sunshade according to the first distance value; calculating the driver's field of view angle according to the distance the sunshade rises or falls in the vertical direction, and making the field of view angle always at a preset angle. The advantage of the present invention is that the shading degree of the sunshade is adjusted according to the distance between the illumination position and the driver's eye point, and the driver's field of view angle is calculated at the same time, so that the field of view angle is always at a preset angle, and the driver's driving field of view angle is increased as much as possible while ensuring shading, thereby improving driving safety.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle sunshade control, and in particular to a vehicle sunshade control method and device. Background Art

[0002] Strong direct sunlight not only increases the temperature inside the car, but also may affect the driver's vision, which may cause safety hazards. The sunshade can be opened or closed as needed, effectively blocking excessive sunlight, protecting passengers from ultraviolet damage, and improving the riding experience.

[0003] Smart sunshade control technology is a technology that has been developed in recent years as the demand for automobile intelligence and comfort grows. This technology aims to improve the interior environment and driving and riding comfort through automation and intelligence, while also playing a role in energy saving.

[0004] In the existing sunshade control technology, a light sensor is usually configured in the vehicle to adjust the shading degree of the sunshade by collecting the current light intensity. However, this inevitably blocks part of the driver's field of vision due to the adjustment of the sunshade, which has a certain probability of causing a traffic accident. Summary of the invention

[0005] The object of the present invention is to provide a vehicle intelligent power distribution system, a power distribution control method and a medium to solve the above-mentioned problems.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The object of the present invention is to provide a vehicle sunshade control method and device to solve the above-mentioned problem.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] A vehicle sunshade control method comprises the following steps:

[0010] Acquiring image information including the driver's body collected by a visual module installed in the driving area of ​​the vehicle;

[0011] Determining a first distance value between the illumination position in the image and the driver's eye point based on the image information, and adjusting the shading degree of the sunshade according to the first distance value;

[0012] The driver's field of view is calculated according to the distance the sunshade rises or falls in the vertical direction, and the field of view is always kept at a preset angle.

[0013] Furthermore, the specific step of determining the first distance value between the illumination position in the image and the driver's eye point based on the image information in the step includes:

[0014] Binarization processing is performed on the collected image information;

[0015] Determine the boundary between illumination and shadow according to the binary processed image, and use the position of the boundary as the starting point for calculating the first distance value;

[0016] The eye point position of the driver is determined based on the image information, and the eye point position is used as an end point for calculating the first distance value, thereby obtaining the first distance value.

[0017] Furthermore, the viewing angle is determined by calculating according to the following formula:

[0018]

[0019] Among them, A represents the field of view angle, H1 represents the vertical distance from the visual module to the eye point, H2 represents the vertical distance the sunshade drops after adjustment, S1 represents the horizontal distance from the sunshade to the visual module, and S2 represents the horizontal distance from the eye point to the visual module.

[0020] Furthermore, the vertical distance that the sunshade is lowered after adjustment is calculated based on the motor operating angle.

[0021] Furthermore, when adjusting the shading degree of the sunshade, the driver is reminded by voice broadcast and flashing lights.

[0022] The present invention also provides another vehicle sunshade control method, comprising the steps of:

[0023] Calculate the driver's field of view angle based on the distance the sunshade rises or falls in the vertical direction;

[0024] When the visual angle is not at the preset angle, image information including the driver's body collected by a visual module installed in the driving area of ​​the vehicle is obtained;

[0025] A first distance value between the illumination position in the image and the driver's eye point is determined based on the image information, and the shading degree of the sunshade is adjusted according to the first distance value so that the field of view angle is always at a preset angle.

[0026] Furthermore, the viewing angle is determined by calculating according to the following formula:

[0027]

[0028] Among them, A represents the field of view angle, H1 represents the vertical distance from the visual module to the eye point, H2 represents the vertical distance the sunshade drops after adjustment, S1 represents the horizontal distance from the sunshade to the visual module, and S2 represents the horizontal distance from the eye point to the visual module.

[0029] Furthermore, the specific step of determining the first distance value between the illumination position in the image and the driver's eye point based on the image information in the step includes:

[0030] Binarization processing is performed on the collected image information;

[0031] Determine the boundary between illumination and shadow according to the binary processed image, and use the position of the boundary as the starting point for calculating the first distance value;

[0032] The eye point position of the driver is determined based on the image information, and the eye point position is used as an end point for calculating the first distance value, thereby obtaining the first distance value.

[0033] The present invention also provides a vehicle sunshade control device, comprising a processor and a memory, wherein the processor implements the above-mentioned vehicle sunshade control method when executing a computer program stored in the memory.

[0034] Compared with the prior art, the present invention has at least the following beneficial effects:

[0035] The distance between the lighting position and the driver's eye point is calculated based on the dividing line obtained by image processing to adjust the shading degree of the sunshade, and at the same time calculate the driver's field of view angle so that the field of view angle is always at the preset angle. While ensuring shading, the driver's driving field of view angle is increased as much as possible, thereby improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 is a flowchart of the steps of the sunshade control method in the first embodiment provided by the present invention;

[0038] Figure 2 is a schematic diagram of the field of view angle calculation in the embodiment provided by the present invention;

[0039] Figure 3 It is a flow chart of the steps of the sunshade control method in the second embodiment provided by the present invention. DETAILED DESCRIPTION

[0040] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0045] Embodiment 1

[0046] like Figure 1 As shown, this embodiment provides a vehicle sunshade control method, which includes the steps of:

[0047] S1, acquiring image information including the driver's body collected by a visual module installed in the driving area of ​​the vehicle;

[0048] S2, determining a first distance value between the illumination position in the image and the driver's eye point based on the image information, and adjusting the shading degree of the sunshade according to the first distance value;

[0049] S3. Calculate the driver's field of view angle according to the distance the sunshade curtain rises or falls in the vertical direction, and make the field of view angle always at a preset angle.

[0050] Specifically, the visual module is a camera, which is installed on the roof position corresponding to the vehicle cab, so as to take a picture of the driver and obtain image information containing the driver's body. In particular, the image information at least contains an image of the upper torso of the driver.

[0051] In the image, it is necessary to determine the first distance value between the illumination position and the driver's eye point according to the image. The specific steps include:

[0052] T1, binarize the collected image information;

[0053] T2, determining the boundary between illumination and shadow according to the binary processed image, and taking the position of the boundary as the starting point for calculating the first distance value;

[0054] T3. Determine the eye point position of the driver based on the image information, and use the eye point position as an end point for calculating the first distance value, thereby obtaining the first distance value.

[0055] For the processing of the image information, the eye point position is first determined, and the eye point position of the driver is determined by the face recognition system in the visual module, thereby calculating the driver's eye point coordinate data. Of course, the driver's eye point position can also be determined by using recognition methods such as convolutional network models or image processing methods such as pixel threshold judgment.

[0056] Next is the lighting condition. After binarization of the collected driver's body image data, a relatively obvious boundary between light and shadow can be obtained. Then the visual module can calculate the relative vertical height of the boundary. Figure 2 As shown, the first distance value is calculated by the relative vertical height between the coordinate data of the eye point position and the dividing line.

[0057] After obtaining the first distance value, the control mechanism on the sunshade will adjust the shading degree of the sunshade according to the first distance value, so that the distance between the light position and the driver's eye position is always maintained within a preset range, thereby reducing the impact of light on the driver's line of sight.

[0058] Preferably, the sunshade installed on the vehicle includes but is not limited to blocking the light irradiating the vehicle windshield in the form of vertical movement relative to the windshield or rotation around the axis. Specifically, when the sunshade blocks the light in the form of rotation around the axis, the change in the projection distance of the sunshade in the vertical direction is used as the descending height of the sunshade.

[0059] The sunshade increases the degree of shading by lowering its height. Although this reduces the impact of light on the driver's line of sight, the lowered height of the sunshade will inevitably affect the driver's field of vision.

[0060] Therefore, in this embodiment, after the sunshade adjusts the shading degree, the driver's field of view angle is calculated according to the distance the sunshade rises or falls in the vertical direction, and the field of view angle is always kept at a preset angle. This can increase the driver's driving field of view angle as much as possible while ensuring shading, thereby improving driving safety.

[0061] Specifically, if Figure 2 As shown, the field of view angle is determined according to the following formula:

[0062]

[0063] Among them, A represents the field of view angle, H1 represents the vertical distance from the visual module to the eye point, H2 represents the vertical distance the sunshade drops after adjustment, S1 represents the horizontal distance from the sunshade to the visual module, and S2 represents the horizontal distance from the eye point to the visual module.

[0064] The motor rotation angle corresponding to the current position of the sunshade is Y. The sunshade's lowering height can be calculated through the sunshade roller radius r. The vertical and horizontal distances from the sunshade to the visual module are determined when the sunshade is installed.

[0065] The driver's field of vision under the current sunshade shading degree is calculated according to the above formula, and whether the field of vision angle value is within the preset angle is determined to determine whether the current sunshade shading degree affects the driver's field of vision. And when the field of vision angle does not meet the preset angle, the shading degree of the sunshade needs to be readjusted to meet these two conditions (field of vision angle and shading degree) and improve driving safety.

[0066] In addition, when adjusting the shading degree of the sunshade, the driver is reminded by voice announcement and flashing lights.

[0067] Embodiment 2

[0068] like Figure 3 As shown, this embodiment provides a vehicle sunshade control method, which includes the steps of:

[0069] S1. Calculate the driver's field of view angle according to the vertical distance the sunshade rises or falls;

[0070] S2. When the visual angle is not at the preset angle, obtaining image information including the driver's body collected by a visual module installed in the driving area of ​​the vehicle;

[0071] S3. Determine a first distance value between the illumination position in the image and the driver's eye point based on the image information, and adjust the shading degree of the sunshade according to the first distance value so that the field of view angle is always at a preset angle.

[0072] The main difference between this embodiment and the first embodiment is that in this embodiment, the driver's field of view angle under the condition of the current sunshade shading degree is first detected to determine whether the current field of view angle meets the preset angle. Then, when the field of view angle is not at the preset angle, the image information containing the driver's body collected by the visual module installed in the driving area of ​​the vehicle is obtained, and the first distance value between the illumination position and the driver's eye point is determined according to the image information, so as to adjust the shading degree of the sunshade so that it meets the dual conditions of the field of view angle and the shading degree, so as to improve driving safety.

[0073] This embodiment also provides a vehicle sunshade control device, comprising a processor and a memory, wherein the processor implements the above-mentioned vehicle sunshade control method when executing a computer program stored in the memory.

[0074] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A vehicle sunshade control method, characterized in that: Including steps: Obtaining image information including the driver's body collected by a visual module installed in the driving area of ​​the vehicle; determining a first distance value between a light position in the image and a driver's eye point based on the image information, and adjusting a shading degree of the sunshade according to the first distance value; The driver's field of view angle is calculated according to the distance the sunshade curtain rises or falls in the vertical direction, and the field of view angle is always kept at a preset angle.

2. A vehicle sunshade control method according to claim 1, characterized in that: The specific step of determining the first distance value between the illumination position in the image and the driver's eye point based on the image information in the step includes: Performing binarization processing on the collected image information; Determine a boundary line between illumination and shadow based on the binarized image, and use the position of the boundary line as a starting point for calculating a first distance value; The driver's eye position is determined based on the image information, and the eye position is used as an end point for calculating a first distance value, thereby obtaining the first distance value.

3. A vehicle sunshade control method according to claim 1, characterized in that: The field of view angle is calculated using the following formula: Among them, A represents the field of view angle, H1 represents the vertical distance from the visual module to the eye point, H2 represents the vertical distance the sunshade drops after adjustment, S1 represents the horizontal distance from the sunshade to the visual module, and S2 represents the horizontal distance from the eye point to the visual module.

4. A vehicle sunshade control method according to claim 3, characterized in that: The vertical distance the sunshade is lowered after adjustment is calculated based on the motor operating angle.

5. The vehicle sunshade control method according to claim 1, characterized in that: When the shading degree of the sunshade is adjusted, the driver is reminded by voice broadcast and light flashing.

6. A vehicle sunshade control method, characterized in that: Including steps: Calculate the driver's field of view angle based on the vertical distance the sunshade is raised or lowered; When the field of view angle is not at the preset angle, obtaining image information including the driver's body collected by a visual module installed in the driving area of ​​the vehicle; A first distance value between the illumination position in the image and the driver's eye point is determined based on the image information, and the shading degree of the sunshade is adjusted according to the first distance value so that the field of view angle is always at a preset angle.

7. A vehicle sunshade control method according to claim 6, characterized in that: The field of view angle is calculated using the following formula: Among them, A represents the field of view angle, H1 represents the vertical distance from the visual module to the eye point, H2 represents the vertical distance the sunshade drops after adjustment, S1 represents the horizontal distance from the sunshade to the visual module, and S2 represents the horizontal distance from the eye point to the visual module.

8. The vehicle sunshade control method according to claim 6, characterized in that: The specific step of determining the first distance value between the illumination position in the image and the driver's eye point based on the image information in the step includes: Performing binarization processing on the collected image information; Determine a boundary line between illumination and shadow based on the binarized image, and use the position of the boundary line as a starting point for calculating a first distance value; The driver's eye position is determined based on the image information, and the eye position is used as an end point for calculating a first distance value, thereby obtaining the first distance value.

9. A vehicle sunshade control device, characterized in that: The invention comprises a processor and a memory, wherein when the processor executes a computer program stored in the memory, the vehicle sunshade control method according to any one of claims 1 to 8 is implemented.

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