Traffic display screen control method and device, electronic equipment and storage medium

Abstract

The invention discloses a traffic display screen control method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring environment data and road condition data; calculating mosquito density based on the environment data and the road condition data; judging whether the electronic ink screen needs to be switched to a non-transparent display state or not based on the mosquito density; calculating first brightness of the LED display screen and second brightness of a target light source used for irradiating the electronic ink screen based on the mosquito density, the environment data and the road condition data; calculating a first driving current corresponding to the first brightness and a second driving current corresponding to the second brightness; the first driving current is adopted to control the LED display screen to display, the electronic ink screen is controlled to display the target pattern, and the second driving current is adopted to control the target light source to irradiate the part, displaying the target pattern, of the electronic ink screen. The first driving current is adopted to control the LED display and the target light source, so that the mosquito density around the display module can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of edge computing, and particularly to a control method, device, electronic device and storage medium for a traffic display screen. Background Art

[0002] With the development of smart cities, traffic display screens are widely used in urban roads. Traffic display screens can include basic traffic lights and large display screens that can display complex information. Traffic display screens can guide vehicle traffic by displaying dynamic arrows, text prompts and icons. In practical applications, traffic display screens are often deployed outdoors. As an artificial light source, traffic display screens will attract mosquitoes. Especially in the evening of summer, a large number of mosquitoes often gather in front of traffic display screens. Seriously, the traffic display screens may be blocked by mosquitoes, often making it difficult for drivers to see the patterns on the traffic display screens clearly, thus seriously affecting traffic safety.

[0003] Currently, to address the problem of traffic display screens attracting mosquitoes, the prior art usually uses ultraviolet lamps that attract mosquitoes installed around the display screens to kill mosquitoes. The ultraviolet lamps attract mosquitoes through ultraviolet light, reducing the gathering of mosquitoes in front of the traffic display screens.

[0004] However, on the one hand, the ultraviolet light emitted by the ultraviolet lamps is harmful to human eyes and may damage the eyesight of passing pedestrians and drivers; on the other hand, this method cannot fundamentally reduce the attractiveness of traffic display screens to mosquitoes. In the case of a large number of mosquitoes, there will still be a large number of mosquitoes gathering in front of the display screens, resulting in the display patterns of the traffic display screens being blocked and drivers having difficulty seeing the display patterns clearly, thus seriously affecting traffic safety. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present application provides a control method, device, electronic device and storage medium for a traffic display screen. By judging whether it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state based on the mosquito density; when it is judged that it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state, calculate the first brightness of the LED display screen and the second brightness of the target light source for irradiating the electronic ink screen based on the mosquito density, environmental data and road condition data, and then use the first drive current to control the LED display screen to display, control the electronic ink screen to display the target pattern, and use the second drive current to control the target light source to irradiate the part of the electronic ink screen where the target pattern is displayed, which can reduce the brightness of the LED display screen when the mosquito density is relatively high to reduce the mosquito density around the display module, so that without using ultraviolet lamps harmful to human eyes to attract mosquitoes, mosquitoes will not block the display module, and at the same time, using the target light source to irradiate the part of the electronic ink screen where the target pattern is located can also enable the display module to clearly display the target pattern, which can enhance traffic safety.

[0006] To solve the above problems, the present invention provides the following technical solutions: In a first aspect, an embodiment of the present application provides a control method for a traffic display screen. The traffic display screen includes a main body and a display module installed on the main body. The display module includes an LED display screen and an electronic ink screen. The LED display screen and the electronic ink screen are stacked, and the electronic ink screen can be in a transparent display state; The control method for the traffic display screen includes: Obtain environmental data and road condition data from a sensor network; Calculate the mosquito density of a preset area range including the traffic display screen based on the environmental data and the road condition data; Judge whether it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state based on the mosquito density; When it is judged that it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state, calculate a first brightness of the LED display screen and a second brightness of a target light source for irradiating the electronic ink screen based on the mosquito density, the environmental data, and the road condition data; wherein, the first brightness is less than the current brightness of the LED display screen; Calculate a first drive current corresponding to the first brightness and a second drive current corresponding to the second brightness; Control the LED display screen to display by using the first drive current, control the electronic ink screen to display a target pattern, and control the target light source to irradiate a part of the electronic ink screen displaying the target pattern by using the second drive current.

[0007] In some embodiments, the environmental data includes environmental images, environmental temperature, environmental humidity, environmental wind speed, atmospheric pressure, weather type, and light intensity, and the road condition data includes traffic flow. Calculating the mosquito density of a preset area range including the traffic display screen based on the environmental data and the road condition data includes: Calculate optical flow data between adjacent frame environmental images based on multiple frames of the environmental images; Calculate the number of mosquitoes based on the optical flow data; Calculate the basic mosquito density based on the area covered by the environmental images and the number of mosquitoes; Perform standardization processing on the environmental temperature, the environmental humidity, the environmental wind speed, the atmospheric pressure, the weather type, and the light intensity to obtain standardized environmental temperature parameters, environmental humidity parameters, environmental wind speed parameters, atmospheric pressure parameters, weather type influence parameters, and light intensity parameters; Calculate a first coefficient corresponding to environmental factors based on the environmental temperature parameter, the environmental humidity parameter, the environmental wind speed parameter, the atmospheric pressure parameter, the weather type influence parameter, and the light intensity parameter; Calculate a second coefficient corresponding to road conditions factors based on the traffic flow; Calculate the mosquito density of a preset area range including the traffic display screen based on the first coefficient corresponding to the environmental factors, the second coefficient corresponding to the road conditions factors, the basic mosquito density, and a preset function formula.

[0008] In some embodiments, the calculating the second coefficient corresponding to road conditions factors based on the traffic flow includes: Calculate the value of the headlight influence function according to the traffic flow and the light intensity; Calculate the value of the exhaust gas influence function according to the traffic flow, where the exhaust gas influence function is a non-linear function and the exhaust gas influence function includes an exhaust gas influence enhancement coefficient; Calculate the second coefficient corresponding to the road conditions factors based on the value of the headlight influence function and the value of the exhaust gas influence function.

[0009] In some embodiments, when it is determined that it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state, calculating the first brightness of the LED display screen and the second brightness of the target light source for irradiating the electronic ink screen based on the mosquito density, the environmental data, and the road conditions data includes: Calculate the first brightness of the LED display screen based on the mosquito density and the light intensity in the environmental data; Determine the standard brightness of the traffic display screen based on the weather type in the environmental data; When the first brightness is greater than the standard brightness, determine that the second brightness is 0; When the first brightness is not greater than the standard brightness, calculate the second brightness according to the optimal reflection illuminance of the electronic ink screen and the light source efficiency conversion coefficient.

[0010] In some embodiments, the calculating the second brightness according to the optimal reflection illuminance of the electronic ink screen and the light source efficiency conversion coefficient when the first brightness is not greater than the standard brightness includes: When the first brightness is not greater than the standard brightness, divide the difference between the optimal reflection illuminance and the standard brightness by the light source efficiency conversion coefficient to obtain the second brightness.

[0011] In some embodiments, the calculating the first drive current corresponding to the first brightness and the second drive current corresponding to the second brightness includes: Calculate the first driving current corresponding to the first brightness according to the first correspondence function between the preset first brightness and the first driving current, and calculate the second driving current corresponding to the second brightness according to the second correspondence function between the preset second brightness and the second driving current; or Calculate multiple values of the first driving current that cause the LED display screen to gradually switch to the first brightness within the refresh time according to the preset refresh time of the electronic ink screen, the current driving current of the LED display screen, and the first correspondence function, and calculate multiple values of the second driving current that cause the target light source to gradually switch to the second brightness within the refresh time according to the refresh time, the current driving current of the target light source, and the second correspondence function.

[0012] In some embodiments, the controlling the LED display screen to display by using the first driving current, controlling the electronic ink screen to display a target pattern, and using the second driving current to control the target light source to irradiate a part of the electronic ink screen displaying the target pattern includes: When the color of the current pattern displayed on the electronic ink screen is different from the color of the target pattern, control the LED display screen to display by using the first driving current according to the refresh time of the electronic ink screen, wherein the color after mixing the display color of the LED display screen and the color of the current pattern is the color of the target pattern; Control the electronic ink screen to perform a full refresh to display the target pattern; Use the second driving current to control the target light source to irradiate a part of the electronic ink screen displaying the target pattern.

[0013] In a second aspect, an embodiment of the present application provides a control device for a traffic display screen. The traffic display screen includes a main body and a display module installed on the main body. The display module includes an LED display screen and an electronic ink screen. The LED display screen and the electronic ink screen are stacked, and the electronic ink screen can be in a transparent display state; The control device for the traffic display screen includes: An acquisition module, configured to acquire environmental data and road condition data from a sensor network; A calculation module, configured to calculate the mosquito density of a preset area range including the traffic display screen based on the environmental data and the road condition data; Based on the mosquito density, determine whether it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state; When it is determined that the electronic ink screen needs to be switched from the transparent display state to the non-transparent display state, calculate the first brightness of the LED display screen and the second brightness of the target light source for irradiating the electronic ink screen based on the mosquito density, the environmental data, and the road condition data; wherein, the first brightness is less than the current brightness of the LED display screen. Calculate the first driving current corresponding to the first brightness and the second driving current corresponding to the second brightness. The control module is configured to control the LED display screen to display by using the first driving current, control the electronic ink screen to display the target pattern, and control the target light source to irradiate the part of the electronic ink screen where the target pattern is displayed by using the second driving current.

[0014] In a third aspect, an embodiment of the present application provides an electronic device, and the electronic device includes: At least one processor; and, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the control method of the traffic display screen as described in the first aspect.

[0015] The present application provides a control method, device, electronic device, and storage medium for a traffic display screen. The present application determines whether the electronic ink screen needs to be switched from the transparent display state to the non-transparent display state based on the mosquito density; when it is determined that the electronic ink screen needs to be switched from the transparent display state to the non-transparent display state, calculate the first brightness of the LED display screen and the second brightness of the target light source for irradiating the electronic ink screen based on the mosquito density, environmental data, and road condition data, and then control the LED display screen to display by using the first driving current, control the electronic ink screen to display the target pattern, and control the target light source to irradiate the part of the electronic ink screen where the target pattern is displayed by using the second driving current, which can reduce the brightness of the LED display screen when the mosquito density is relatively high to reduce the mosquito density around the display module, so that without using a UV lamp harmful to the human eye to attract mosquitoes, mosquitoes will not block the display module, and at the same time, by using the target light source to irradiate the part of the electronic ink screen with the target pattern, the display module can clearly display the target pattern, which can enhance traffic safety. Description of the Drawings

[0016] Figure 1 It is a schematic flowchart of the control method of the traffic display screen provided by the embodiment of the present application.

[0017] Figure 2 is Figure 1 The refined flowchart of step S200 in

[0018] Figure 3 It is a schematic structural diagram of a control device for a traffic display screen provided by an embodiment of the present application.

[0019] Figure 4 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

[0020] Figure 5 It is a structural block diagram of a computer-readable storage medium provided by an embodiment of the present application. Specific Embodiments

[0021] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0023] The present application provides a control method, device, electronic device, and storage medium for a traffic display screen. It is determined whether the electronic ink screen needs to be switched from a transparent display state to a non-transparent display state based on the mosquito density. When it is determined that the electronic ink screen needs to be switched from a transparent display state to a non-transparent display state, the first brightness of the LED display screen and the second brightness of the target light source for irradiating the electronic ink screen are calculated based on the mosquito density, environmental data, and road condition data. Then, the LED display screen is controlled to display using a first drive current, the electronic ink screen is controlled to display a target pattern, and the target light source is controlled to irradiate the part of the electronic ink screen displaying the target pattern using a second drive current. It is possible to reduce the brightness of the LED display screen when the mosquito density is high to reduce the mosquito density around the display module, so that mosquitoes will not block the display module without using ultraviolet lamps harmful to the human eye. At the same time, by using the target light source to irradiate the part of the electronic ink screen with the target pattern, it is also possible to make the display module clearly display the target pattern, which can enhance traffic safety.

[0024] In some embodiments, the traffic display screen includes a main body and a display module installed on the main body. The display module includes an LED display screen and an electronic ink screen. The LED display screen and the electronic ink screen are stacked.

[0025] Optionally, the LED display screen can be in a transparent display state.

[0026] Optionally, when the LED display screen can be in a transparent display state, the LED display screen can be a flexible LED film screen, an optoelectronic glass screen, a crystal film screen, etc.

[0027] Optionally, the electronic ink screen can be in a transparent display state.

[0028] The electronic ink screen is a reflective display screen, and its screen is composed of millions of tiny capsules. For a black-and-white electronic ink screen, each capsule contains positively charged white particles and negatively charged black particles, and the capsules are in a transparent liquid. When the screen is powered on, the movement of the capsules can be controlled by the direction of the electric field, so as to present different grayscales on the screen.

[0029] Currently, the existing types of electronic ink screens include black-and-white electronic ink screens and color electronic ink screens. There are also electronic ink screens that can be in a transparent state. The electronic ink screen that can be in a transparent state includes a top transparent electrode layer, a plurality of transparent microcapsules, a bottom transparent electrode layer, a transparent substrate, and a plurality of electrode fences. By setting the substrate to be transparent and by arranging a plurality of electrode fences between the plurality of transparent microcapsules, when the electronic ink screen is turned off, a voltage is applied to the plurality of electrode fences, so that the black particles and white particles of the plurality of transparent microcapsules are adsorbed in the corresponding electrode fences, and the transparent microcapsules become transparent, thereby making the electronic ink screen in a transparent state.

[0030] The electronic ink screen itself does not emit light and relies on reflecting ambient light to display images. The stronger the ambient light, the more light the electronic ink screen reflects, and the clearer the displayed image. Therefore, its display effect in strong light is better than that of the light-emitting LED display screen. In addition, the electronic ink screen has a wide viewing angle, and clear and colorless-distorted images can be obtained almost from any viewing angle.

[0031] Optionally, the LED display screen can be located on the display surface of the display module. Or, the electronic ink screen can be located on the display surface of the display module.

[0032] Optionally, when the electronic ink screen displays a target pattern, the LED display screen may not display a pattern in the display area corresponding to the area where the electronic ink screen displays the target pattern. Optionally, at this time, the LED display screen can be in a transparent display state, or the LED display screen can emit background light. When the LED display screen emits background light, it provides backlight for the electronic ink screen.

[0033] Optionally, when the LED display screen does not display a pattern in the display area corresponding to the display area of the target pattern on the electronic ink screen, a pattern can be displayed in an area outside the display area. For example, when the electronic ink screen displays a static target pattern, the LED display screen can display a dynamic pattern in an area outside the display area corresponding to the display area of the target pattern on the electronic ink screen. Further, at this time, the LED display screen can only emit background light or not emit light in the display area corresponding to the display area of the target pattern on the electronic ink screen.

[0034] Preferably, the electronic ink screen is located on the display surface of the display module. This is because the electronic ink screen itself does not emit light, and the stronger the ambient light, the more light the electronic ink screen reflects, and the clearer the displayed image. When the electronic ink screen is located on the display surface of the display module, it can reflect more ambient light. Moreover, the electronic ink screen has a wide viewing angle, and clear and colorless-distorted images can be obtained almost from any viewing angle.

[0035] The control method of the traffic display screen provided by the present application will be specifically described below with reference to the accompanying drawings.

[0036] Please refer to Figure 1 , Figure 1 which is a schematic flowchart of the control method of the traffic display screen provided by the embodiment of the present application. As Figure 1 shown, the control method of the traffic display screen includes: step S100 to step S600.

[0037] Step S100: Obtain environmental data and road condition data from the sensor network.

[0038] The sensor network is a self-organizing network composed of distributed sensor nodes, which can realize the acquisition and transmission of environmental data and road condition data through collaborative perception, data processing, and communication.

[0039] The traffic display screen of the present application can include an Internet of Things chip, which can obtain environmental data and road condition data from the sensor network, and then perform edge computing according to the environmental data and road condition data. Edge computing is a distributed computing, and its core lies in sinking computing, storage, and network resources from the cloud center to edge devices close to the data source for computing to achieve real-time processing of data and low-latency response. The traffic display screen of the present application can belong to an edge device.

[0040] In some embodiments, the environmental data includes environmental images, environmental temperature, environmental humidity, environmental wind speed, atmospheric pressure, weather type, light intensity, etc. The environmental images, environmental temperature, environmental humidity, environmental wind speed, atmospheric pressure, weather type, and light intensity can be measured or calculated by devices such as cameras, temperature sensors, humidity sensors, anemometers, barometric pressure sensors, weather data edge computing devices, and light intensity sensors deployed within the preset area range of the traffic display screen.

[0041] Optionally, the road condition data includes traffic flow. Traffic flow refers to the number of vehicles passing through the monitored road within a unit of time.

[0042] Optionally, the road condition data can also include the average vehicle speed.

[0043] Beside the road, the activities of mosquitoes are not only affected by the environment but also by the road conditions. For example, the car headlights can also attract mosquitoes. The air disturbance brought by the traffic flow will affect the distribution of mosquitoes, which generally shows a negative correlation. Mosquitoes are extremely sensitive to carbon dioxide, and the carbon dioxide in vehicle exhaust generally attracts mosquitoes to approach. In addition, the temperature of vehicle exhaust is relatively high, which will also attract mosquitoes to approach. Therefore, step S200 is executed.

[0044] Step S200: Calculate the mosquito density including the preset area range of the traffic display screen based on the environmental data and the road condition data.

[0045] In some embodiments, the mosquito density of the preset area range of the traffic display screen Please refer to Figure 2 , Figure 2 is Figure 1 the detailed flowchart of step S200 in Figure 2 As shown, in some embodiments, step S200 includes steps S210 to S270.

[0046] Step S210: Calculate the optical flow data between adjacent frames of environmental images based on multiple frames of environmental images.

[0047] Optical flow is the motion vector of pixel points in an image between adjacent frames, which is used to reflect the motion information of objects in a scene. Mosquitoes are moving targets, so the optical flow data can be used to distinguish mosquitoes from the background.

[0048] In some embodiments, the gradient-based dense optical flow method is used to calculate multiple frames of environmental images. Among them, the brightness conservation equation is solved through pyramid layering and local weighted least squares method to obtain the optical flow data.

[0049] Step S220: Calculate the number of mosquitoes based on the optical flow data.

[0050] The flight of mosquitoes is characterized by high-frequency and small-amplitude vibrations, and there are significant differences in the direction change rate of the optical flow vector and the background.

[0051] In some embodiments, step S220 includes steps S221 to S222.

[0052] Step S221: Filter the optical flow data to remove background noise and obtain the filtered optical flow data.

[0053] Step S222: Perform clustering based on the filtered optical flow data to obtain the number of mosquitoes.

[0054] In some embodiments, extract the motion trajectories of all optical flow points in the filtered optical flow data whose direction change rate is greater than the preset direction change rate, and based on the trajectory shapes of all motion trajectories, use the dynamic time warping method to calculate the trajectory similarity, and cluster the motion trajectories according to the trajectory similarity to obtain the number of mosquitoes.

[0055] Step S230: Calculate the basic mosquito density based on the area covered by the environmental image and the number of mosquitoes.

[0056] In some embodiments, the area covered by the environmental image can be calculated according to the focal length and pitch angle in the camera calibration parameters.

[0057] Optionally, when acquiring the environmental image, the area covered by the environmental image can be acquired simultaneously.

[0058] In some embodiments, due to reasons such as the fast flight speed of mosquitoes, the inability to obtain real-time environmental images, the limited area covered by the environmental image, and the camera's inability to directly capture traffic display screens, there is a large gap between the calculated basic mosquito density and the actual mosquito density continuously aggregating in front of the traffic display screen. Since mosquito aggregation is mainly affected by real-time environmental factors, the mosquito density is further calculated according to other parameters in the environmental data. Here, the mosquito density can refer to the average mosquito density within a preset area range including the traffic display screen at the current time and for a period of time after that.

[0059] Optionally, the preset area range is a circular area range centered on the traffic display screen and with a preset radius.

[0060] Optionally, the preset radius can be 1 meter (m), 2 m, 5 m, etc.

[0061] Step S240: Standardize the environmental temperature, environmental humidity, environmental wind speed, atmospheric pressure, weather type, and light intensity to obtain standardized environmental temperature parameters, environmental humidity parameters, environmental wind speed parameters, atmospheric pressure parameters, weather type influence parameters, and light intensity parameters.

[0062] In some embodiments, the minimum-maximum normalization method is adopted. The ambient temperature, ambient humidity, ambient wind speed, atmospheric pressure, and light intensity are respectively subtracted from the corresponding minimum standard values, and the obtained differences are then divided by the differences between the corresponding maximum standard values and the minimum standard values, resulting in normalized ambient temperature parameters, ambient humidity parameters, ambient wind speed parameters, atmospheric pressure parameters, and light intensity parameters.

[0063] In some embodiments, the weather type influence parameter is determined according to the value of the influence parameter corresponding to the weather type. Exemplarily, the influence parameter corresponding to the sunny weather type is 0.5, the influence parameter corresponding to the cloudy weather type is 1, the influence parameter corresponding to the rainy weather type is 0.3, and the influence parameter corresponding to the overcast weather type is 0.7.

[0064] Step S250: Calculate the first coefficient corresponding to the environmental factors based on the ambient temperature parameter, ambient humidity parameter, ambient wind speed parameter, atmospheric pressure parameter, weather type influence parameter, and light intensity parameter.

[0065] In some embodiments, step S250 includes steps S251 to S256.

[0066] Step S251: Calculate the value of the temperature influence function based on the ambient temperature parameter.

[0067] In some embodiments, the value of the temperature influence function is calculated based on the mosquito optimal aggregation temperature parameter and the ambient temperature parameter.

[0068] Optionally, the calculation formula of the temperature influence function is: , where represents the temperature influence function, represents the ambient temperature parameter, represents the mosquito optimal aggregation temperature parameter, is the corresponding calculation coefficient, is the temperature influence coefficient corresponding to the current season. is greater than 0.

[0069] Optionally, the mosquito optimal aggregation temperature parameter and the temperature influence coefficient corresponding to the current season can be obtained from the Internet of Things or the sensor network.

[0070] Optionally, the mosquito optimal aggregation temperature parameter and the temperature influence coefficient corresponding to the current season can be preset.

[0071] Step S252: Calculate the value of the humidity influence function based on the ambient humidity parameter.

[0072] Optionally, the humidity influence function is a non-linear function.

[0073] Optionally, a quadratic function is used to describe the influence degree of the environmental humidity parameter on the mosquito density based on the optimal aggregation humidity parameter of mosquitoes. At this time, the calculation formula of the humidity influence function is: , where, represents the humidity influence function, represents the environmental humidity parameter, represents the calculation coefficient of the humidity influence, represents the basic calculated value of the humidity influence function, represents the optimal aggregation humidity parameter of mosquitoes. is greater than or equal to 0. is greater than 0.

[0074] Optionally, and can be preset or obtained.

[0075] Step S253: Calculate the value of the wind speed influence function based on the environmental wind speed parameter.

[0076] An increase in wind speed will directly lead to an increase in the flight resistance of mosquitoes, which has a dispersing effect on mosquitoes.

[0077] In some embodiments, the calculation formula of the wind speed influence function is: , where, represents the wind speed influence function, represents the environmental wind speed parameter, represents the calculation coefficient of the dispersing intensity per unit wind speed, represents the calculation coefficient of the wind speed influence function. is a positive number.

[0078] Optionally, and can be preset. Exemplarily, can be 1, can be 0.3, 0.4 or 0.5, etc.

[0079] In some embodiments, considering the mutual influence of the environmental wind speed and the environmental temperature, the wind speed influence function is calculated based on the environmental wind speed parameter and the environmental temperature parameter. Optionally, at this time, the calculation formula of the wind speed influence function can be: , where, represents the base of the natural logarithm, The influence coefficient representing the dispersing effect of the ambient temperature on the ambient wind speed is a positive number and a preset value. It is used to represent the inhibitory effect of the ambient temperature on the dispersing effect of the ambient wind speed.

[0080] Furthermore, the mutual influence between the wind direction and the road terrain can also be considered to obtain the included angle between the wind direction and the road direction, and the wind speed influence function can be calculated based on the ambient temperature parameter, the ambient wind speed parameter, and the included angle between the wind direction and the road direction. Optionally, at this time, the calculation formula of the wind speed influence function can be: , wherein, represents the wind blocking effect coefficient of the buildings on both sides of the road, is a positive number and a preset value. represents the included angle between the wind direction and the road direction, and the value range is [0, π / 2]. It is used to represent the influence of the road terrain on the dispersing effect of the ambient wind speed. The closer it is to π / 2, the larger the value of

[0081] is, because the crosswind is more likely to blow the mosquitoes away from the road direction and thus away from the traffic display screen. In this way, the calculation accuracy can be improved for the mosquito density around the traffic display screen on the road.

[0082] Step S254: Calculate the value of the air pressure influence function based on the atmospheric pressure parameter. , wherein, represents the air pressure influence function, represents the atmospheric pressure parameter, represents the air pressure influence calculation coefficient, represents the least suitable air pressure parameter for mosquito aggregation.

[0083] Optionally, and can be preset values, or can be determined according to the current weather type and the corresponding relationship information between the weather type, the air pressure influence calculation coefficient, and the most suitable air pressure for mosquito aggregation.

[0084] In some embodiments, mosquitoes will experience physiological stress and a decline in flight ability due to a sudden change in the air pressure difference inside and outside their bodies. For example, when a typhoon passes by, the atmospheric pressure first drops and then rises. When the atmospheric pressure rises, the mosquito density originally increased due to the low pressure will decrease due to the sudden change in air pressure.

[0085] In some embodiments, considering the influence of air pressure transients on mosquitoes, the air pressure influence function may include an air pressure change rate correction term. Optionally, the air pressure parameters at multiple times may be calculated based on the atmospheric pressure at multiple times, and then the air pressure influence function may be calculated based on the air pressure parameters at multiple times. At this time, the calculation formula of the air pressure influence function may be: , wherein, represents the air pressure change rate correction term. represents the influence intensity coefficient of the unit air pressure change rate and is a positive number. represents the air pressure change rate calculation coefficient. represents the differential of the air pressure parameter at the corresponding time, that is, the air pressure change rate, which is negative when the atmospheric pressure decreases and positive when the atmospheric pressure increases.

[0086] When the atmospheric pressure decreases, the value of the air pressure change rate correction term will increase, reflecting that mosquitoes are likely to increase when the atmospheric pressure decreases. When the atmospheric pressure increases, the value of the air pressure change rate correction term will decrease, reflecting that mosquitoes are likely to decrease when the atmospheric pressure increases. By calculating the air pressure influence function based on the air pressure parameters at multiple times, the calculation accuracy of the mosquito density can be improved in the case of rapid air pressure changes.

[0087] Optionally, and are preset values, and can make the value of the air pressure change rate correction term a positive number.

[0088] Step S255: Calculate the value of the light intensity influence function based on the light intensity parameter.

[0089] The weaker the light intensity in the environment, the greater the brightness difference between the traffic display screen and the environment, and the greater the degree of attraction of the traffic display screen to mosquitoes.

[0090] In some other embodiments, the calculation formula of the light intensity influence function is: , wherein, represents the light intensity influence function, represents the light intensity parameter. represents the calculation base coefficient of the light intensity parameter, which is a number greater than 1 and is a preset value.

[0091] Step S256: Calculate the first coefficient corresponding to the environmental factors based on the value of the weather type influence parameter, the value of the temperature influence function, the value of the humidity influence function, the value of the wind speed influence function, the value of the air pressure influence function, and the value of the light intensity influence function.

[0092] In some embodiments, the first coefficient corresponding to the environmental factors is calculated by means of weighted calculation. At this time, the calculation formula for the first coefficient corresponding to the environmental factors can be: , wherein, represents the environmental factor influence function, represents the weather type influence parameter, , , , and are the weighted calculation coefficients corresponding to each influence function. , , , and The sum of is 1.

[0093] Step S260: Calculate the second coefficient corresponding to the road condition factors based on the traffic flow.

[0094] In some embodiments, step S260 includes steps S261 to S263.

[0095] Step S261: Calculate the value of the headlight influence function according to the traffic flow and the light intensity.

[0096] In some embodiments, the value of the light intensity response function is calculated according to the light intensity, and the value of the headlight influence function is calculated based on the traffic flow and the value of the light intensity response function.

[0097] Optionally, the light intensity response function is a piecewise function, and the value of the light intensity response function is calculated according to multiple light intensity value intervals divided by the standard light intensity at night, the light intensity threshold when the headlights start to dominate the influence on the aggregation of mosquitoes, and the standard light intensity during the day. At this time, the calculation formula for the headlight influence function is: , wherein, represents the headlight influence function, represents the traffic flow, represents the maximum traffic flow on the road. is a preset value. represents the light intensity response function, represents the light intensity parameter, represents the standard light intensity at night, represents the light intensity threshold when the headlights start to dominate the influence on the aggregation of mosquitoes, represents the standard light intensity during the day.

[0098] At low light intensities (such as at night), mosquitoes are highly attracted to the lights of vehicle headlights. At medium light intensities (such as at dusk), the attraction of mosquitoes to vehicle headlights weakens. At strong light (such as during the day), the impact of vehicle headlights on mosquitoes can be ignored. By using a piecewise function as the light intensity response function, the impact of vehicle headlights on mosquito density can be accurately reflected.

[0099] Step S262: Calculate the value of the exhaust gas impact function based on the traffic flow.

[0100] Among them, the exhaust gas impact function is a non-linear function, and the exhaust gas impact function includes an exhaust gas impact enhancement coefficient.

[0101] In some embodiments, the calculation formula of the exhaust gas impact function is: , Among them, represents the exhaust gas impact function, represents the exhaust gas impact enhancement coefficient, represents the volume of vehicle exhaust gas emitted by a unit number of vehicles per unit time. is a preset value.

[0102] In some embodiments, when the road condition data also includes the average vehicle speed, the calculation formula of the exhaust gas impact function can be: , Among them, represents the average vehicle speed, represents the displayed speed restricted by the road. is a preset value. is used to represent the impact of the average vehicle speed on vehicle exhaust emissions. When there is a traffic jam, the average vehicle speed becomes smaller, and the value of the exhaust gas impact function will become larger.

[0103] Step S263: Calculate the second coefficient corresponding to the road condition factor based on the value of the vehicle headlight impact function and the value of the exhaust gas impact function.

[0104] In some embodiments, the calculation formula of the second coefficient corresponding to the road condition factor is: , Among them, represents the road condition factor impact function. When the value of is very high, both the numerator and denominator of increase, which can avoid the explosion of the calculation result due to extreme values and conform to the physiological characteristics of the overload failure of mosquito sensory receptors. When the value of is small, , and then the calculation formula of can be approximated to a hyperbolic calculation.

[0105] Through the calculation formula of the road condition factor influence function, when has a high value, it can achieve non-linear suppression of the result. When has a low value, it can approximate hyperbolic calculation, so as to achieve adaptive calculation adjustment.

[0106] Step S270: Calculate the mosquito density of the preset area including the traffic display screen based on the first coefficient corresponding to the environmental factor, the second coefficient corresponding to the road condition factor, the basic mosquito density, and the preset function formula.

[0107] In some embodiments, the preset function formula includes a basic numerical calculation term and an adjustment term multiplied by the basic numerical calculation term.

[0108] In some embodiments, the preset function formula is: , where represents the mosquito density. It is the finally calculated mosquito density. represents the basic mosquito density, and ln represents the natural logarithm. represents the basic numerical calculation term, represents the adjustment term.

[0109] It can be seen from the above that both the first coefficient corresponding to the environmental factor and the second coefficient corresponding to the road condition factor are positive numbers. When and are extremely large, approaches 1, making the calculation formula of the comprehensive density function approximate linear addition. When and have a large difference in value, can be used to suppress extreme value deviation.

[0110] In some other embodiments, obtain the current time, and calculate the mosquito density of the preset area including the traffic display screen based on the current time, the first coefficient corresponding to the environmental factor, the second coefficient corresponding to the road condition factor, the basic mosquito density, and the preset function formula. At this time, the preset function formula is: , where represents the current time, represents the period of the sine function, represents the area of the preset area. represents the adjustment term, which is used to reflect the influence of the current time on the mosquito density.

[0111] Optionally, the current time is the relative time of a day. Exemplarily, the value range of the current time is from 0 minutes to 3600 minutes.

[0112] In the early morning or evening, mosquitoes often gather in large numbers. The value of can reach the maximum value at a specified time. In this way, the mosquito density can be calculated based on the current time, improving the accuracy of the calculation.

[0113] In some embodiments, historical data can be used to train an environmental factor influence model, determine the calculation coefficients in the above-mentioned multiple formulas in the environmental factor influence model, then calculate the values of multiple influence functions, and further calculate the mosquito density of a preset area range including a traffic display screen using a preset function formula.

[0114] In some embodiments, a genetic algorithm can be used to determine the calculation coefficients in the above-mentioned multiple formulas to minimize the calculation error.

[0115] Step S300: Based on the mosquito density, determine whether it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state.

[0116] In some embodiments, when the mosquito density is greater than the first mosquito density threshold, it is determined that it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state; otherwise, it is determined that there is no need to switch the electronic ink screen from the transparent display state to the non-transparent display state.

[0117] In some embodiments, obtain the mosquito density warning value of the current season from the sensor network. When the mosquito density is greater than the mosquito density warning value, it is determined that it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state; otherwise, it is determined that there is no need to switch the electronic ink screen from the transparent display state to the non-transparent display state.

[0118] Step S400: When it is determined that it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state, calculate the first brightness of the LED display screen and the second brightness of the target light source for irradiating the electronic ink screen based on the mosquito density, environmental data, and road condition data.

[0119] Among them, the first brightness is less than the current brightness of the LED display screen.

[0120] When the LED display screen displays at the first brightness, the brightness of the LED display screen is reduced, and at the same time, the heat generation degree of the LED display screen can also be reduced, thereby fundamentally reducing the degree of attraction of the LED display screen itself to mosquitoes and reducing the degree of aggregation of mosquitoes in front of the display module. When the target light source irradiates the electronic ink screen, the display pattern of the electronic ink screen can be made clearer, and mosquitoes are more easily attracted by the target light source, thereby further reducing the degree of aggregation of mosquitoes in front of the display module.

[0121] In some embodiments, when the mosquito density is not greater than the first mosquito density threshold, it is determined that the display module will not be blocked by mosquitoes. The entire area of the electronic ink screen is controlled to be in a transparent display state, the target light source is controlled to be turned off, and the LED display screen is controlled to be in a non-transparent display state and display the target pattern. At this time, the electronic ink screen does not block the target pattern. In this way, when it is determined that the mosquito density will not be blocked by mosquitoes, the LED display screen with relatively low power consumption and fast refresh speed can be used for display.

[0122] In some embodiments, step S400 includes steps S410 to S430.

[0123] Step S410: Calculate the first brightness of the LED display screen based on the mosquito density and the light intensity in the environmental data.

[0124] Reducing the brightness of the LED display screen can reduce the degree of attraction of the LED display screen to mosquitoes. However, excessive reduction of the brightness may cause the traffic display screen to be unclear. Therefore, it is necessary to calculate the first brightness of the LED display screen based on the mosquito density and the light intensity in the environmental data.

[0125] In some embodiments, when the mosquito density is greater than the first mosquito density threshold, the calculation formula for the first brightness is: , Wherein, represents the first brightness, represents the first mosquito density threshold, represents the influence coefficient of the mosquito density on the brightness. is greater than 0 and less than 1. represents the light intensity, represents the lowest light intensity threshold. represents the first calculation constant, is greater than 0. is used to make not approximate to 0 when the light intensity is very small.

[0126] In some embodiments, when the mosquito density is greater than the second mosquito density threshold and the light intensity is greater than the minimum light intensity threshold, it is determined that the degree of mosquito aggregation is extremely high, and the first brightness is determined to be 0. Here, the second mosquito density threshold is greater than the first mosquito density threshold. At this time, because the light intensity is greater than the minimum light intensity threshold, the electronic ink screen can be displayed only by irradiating the target light source, and there will be no problem of unclear display. When the first brightness is 0, that is, the LED display screen is not lit, and only the electronic ink screen is switched from the transparent display state to the non-transparent display state, the display module itself does not emit light, and the electronic ink screen does not consume power or generate heat during static display, thus fundamentally reducing the attraction of the traffic display screen to mosquitoes. The attraction of the traffic display screen to mosquitoes is equivalent to that of an ordinary object that does not emit light or generate heat. This situation can be analogized to when people read an e-book and only turn on the table lamp without turning on the backlight of the electronic ink screen, making the display effect of the electronic ink screen equivalent to that of ordinary paper.

[0127] Step S420: Determine the standard brightness of the traffic display screen based on the weather type in the environmental data.

[0128] To enable the traffic display screen to be clearly displayed in various weather conditions, the overall display brightness of the traffic display screen needs to reach the standard brightness.

[0129] In some embodiments, the standard brightness corresponding to the weather type is determined based on the weather type in the environmental data and the corresponding relationship information between the preset weather type and the standard brightness.

[0130] Step S430: When the first brightness is greater than the standard brightness, determine the second brightness to be 0.

[0131] Step S440: When the first brightness is not greater than the standard brightness, calculate the second brightness according to the optimal reflection illuminance of the electronic ink screen and the light source efficiency conversion coefficient.

[0132] In some embodiments, when the first brightness is not greater than the standard brightness, the difference between the optimal reflection illuminance and the standard brightness is divided by the light source efficiency conversion coefficient to obtain the second brightness. At this time, the calculation formula for the second brightness is: , where, represents the second brightness, represents the optimal reflection illuminance, represents the standard brightness, represents the light source efficiency conversion coefficient.

[0133] Since the second brightness of the target light source cannot be equal to the display brightness of the electronic ink screen when the target light source with the second brightness irradiates the electronic ink screen, it is necessary to introduce a light source efficiency conversion coefficient into the calculation formula of the second brightness. In this way, it can be ensured that the first brightness plus the display brightness of the electronic ink screen when the target light source with the second brightness irradiates the electronic ink screen is equal to the standard brightness, so that the display module can display with the standard brightness.

[0134] Step S500: Calculate the first driving current corresponding to the first brightness and the second driving current corresponding to the second brightness.

[0135] In some embodiments, the first driving current corresponding to the first brightness is calculated according to a preset first correspondence function between the first brightness and the first driving current, and the second driving current corresponding to the second brightness is calculated according to a preset second correspondence function between the second brightness and the second driving current.

[0136] Since the refresh time of the electronic ink screen is relatively long, the LED display screen can be controlled to gradually change from the current brightness to the first brightness within the refresh time, and the target light source can be controlled to gradually change from the current brightness to the second brightness. During the process of brightness gradual change, the overall display brightness of the display module can be kept constant. At this time, within the refresh time, the LED display screen still displays the pattern.

[0137] In some embodiments, a plurality of values of the first driving current that enables the LED display screen to gradually switch to the first brightness within the refresh time are calculated according to the preset refresh time of the electronic ink screen, the current driving current of the LED display screen, and the first correspondence function, and a plurality of values of the second driving current that enables the target light source to gradually switch to the second brightness within the refresh time are calculated according to the refresh time, the current driving current of the target light source, and the second correspondence function. Among them, the first correspondence function and the second correspondence function are preset.

[0138] Step S600: Control the LED display screen to display by using the first driving current, control the electronic ink screen to display the target pattern, and control the target light source to irradiate the part of the electronic ink screen displaying the target pattern by using the second driving current.

[0139] As described above, in some embodiments, when the electronic ink screen displays the target pattern, the LED display screen may not display the pattern in the display area corresponding to the electronic ink screen displaying the target pattern. Optionally, at this time, the LED display screen may be in a transparent display state, or the LED display screen may emit background light. When the LED display screen emits background light, it provides backlight for the electronic ink screen.

[0140] In some embodiments, when the first driving current is a certain value and the second driving current is a certain value, the LED display screen is directly controlled by the first driving current to perform display, the electronic ink screen is controlled to display a target pattern, and the target light source is controlled by the second driving current to irradiate the electronic ink screen.

[0141] In some embodiments, within the preset refresh time of the electronic ink screen, the LED display screen is controlled to perform display according to multiple values of the first driving current, so that the LED display screen gradually switches to the first brightness within the refresh time. The target light source is controlled to irradiate the electronic ink screen according to multiple values of the second driving current, so that the target light source gradually switches to the second brightness within the refresh time, and at the same time, the electronic ink screen is controlled to display the target pattern.

[0142] In some embodiments, the target light source can be disposed on the main body of the traffic display screen and far away from the traffic display screen. Optionally, the target light source can be an illumination light source other than the traffic display screen, such as a street lamp.

[0143] In some embodiments, the target light source can include a negative pressure suction module and a high-voltage power grid. When the target light source is turned on, the negative pressure suction module and the high-voltage power grid of the target light source can be controlled to be turned on, so that the mosquitoes attracted to the target light source are sucked to the position of the high-voltage power grid by the negative pressure suction module and killed.

[0144] It can be understood that generally, the target light source needs to be disposed outside the traffic display screen to prevent the target light source from blocking the traffic display screen and avoid attracting mosquitoes to the vicinity of the traffic display screen.

[0145] In some embodiments, since the electronic ink screen does not consume power when displaying a pattern and has a long refresh time, the electronic ink screen can be controlled to display a static pattern and the display area other than the static pattern is in a transparent display state, and the LED display screen is controlled to display a dynamic pattern in the area other than the display area corresponding to the electronic ink screen displaying the target pattern. For example, the electronic ink screen is controlled to display a schematic diagram of a forked road condition and a static indication arrow, and the LED display screen is controlled to display the real-time traffic light state and countdown. In this way, the power consumption of the traffic display screen can be significantly reduced. Further, at this time, the LED display screen can only emit background light or not emit light in the display area corresponding to the electronic ink screen displaying the target pattern.

[0146] In some embodiments, step S600 includes steps S610 to S630.

[0147] Step S610: When the current pattern displayed on the electronic ink screen is different from the target pattern in color, the LED display screen is controlled to perform display according to the first driving current based on the refresh time of the electronic ink screen.

[0148] Among them, the color after the display color of the LED display screen is mixed with the color of the current pattern is the color of the target pattern. In this way, within the refresh time of the e-ink screen, the color of the pattern seen by the human eye will not change, which can improve the display effect.

[0149] In some embodiments, the e-ink screen being in a transparent display state may mean that a part of the area is transparent and another part of the area displays the current pattern. For example, it is possible to control the e-ink screen to display a static pattern and the display area outside the static pattern is in a transparent display state. The e-ink screen being in a non-transparent display state may mean that the entire area is opaque. When the color of the current pattern displayed on the e-ink screen is different from the color of the target pattern, within the refresh time of the e-ink screen, a first driving current can be used to control the LED display screen to display the background color in the area where the e-ink screen displays the current pattern. The background color is the display color of the LED display screen, and the color after the background color is mixed with the color of the current pattern is the color of the target pattern.

[0150] Step S620: Control the entire refresh of the e-ink screen to display the target pattern.

[0151] Step S630: Use a second driving current to control the target light source to irradiate the part of the e-ink screen where the pattern is displayed.

[0152] In some embodiments, in order to reduce the situation of strong light dazzling, the method further includes step S700.

[0153] Step S700: When the light intensity in the environmental data is greater than the standard intensity corresponding to the weather type, control the e-ink screen to display the target pattern, control the LED display screen to be in a transparent display state, and turn off the target light source.

[0154] Among them, controlling the LED display screen to be in a transparent display state means controlling all areas of the LED display screen to be in a transparent display state.

[0155] The e-ink screen itself does not emit light. The stronger the ambient light, the more light the e-ink screen reflects, and the clearer the displayed image. In the case of strong light, only using the e-ink screen to display the target pattern can reduce the situation of strong light dazzling.

[0156] In summary, the control method for the traffic display screen provided by the embodiments of the present application has the following advantages: 1. Determine whether it is necessary to switch the electronic ink screen from the transparent display state to the non - transparent display state based on the mosquito density; when it is determined that it is necessary to switch the electronic ink screen from the transparent display state to the non - transparent display state, calculate the first brightness of the LED display screen and the second brightness of the target light source for irradiating the part of the electronic ink screen that displays the target pattern based on the mosquito density, environmental data, and road condition data. Then, use the first driving current to control the LED display screen to display, control the electronic ink screen to display the target pattern, and use the second driving current to control the target light source to irradiate the part of the electronic ink screen that displays the target pattern. This can reduce the brightness of the LED display screen when the mosquito density is relatively high to reduce the mosquito density around the display module, so that without using ultraviolet lamps harmful to the human eye to attract mosquitoes, mosquitoes will not block the display module. At the same time, using the target light source to irradiate the part of the electronic ink screen with the target pattern can also enable the display module to clearly display the target pattern, enhancing traffic safety.

[0157] 2. By calculating the wind speed influence function based on the environmental temperature parameter, environmental wind speed parameter, and the angle between the wind direction and the road direction, the calculation accuracy for the mosquito density around the traffic display screen on the road can be improved.

[0158] 3. By calculating the air pressure influence function based on the atmospheric pressure parameters at multiple times, the calculation accuracy of the mosquito density can be improved in the case of rapid air pressure changes.

[0159] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of the control device of the traffic display screen provided by the embodiment of the present application. As Figure 3 shown, the control device 300 of the traffic display screen includes an acquisition module 310, a calculation module 320, and a control module 330.

[0160] In some embodiments, the acquisition module 310 is configured to obtain environmental data and road condition data from the sensor network.

[0161] In some embodiments, the calculation module 320 is configured to calculate the mosquito density of a preset area range including the traffic display screen based on the environmental data and road condition data; determine whether it is necessary to switch the electronic ink screen from the transparent display state to the non - transparent display state based on the mosquito density; when it is determined that it is necessary to switch the electronic ink screen from the transparent display state to the non - transparent display state, calculate the first brightness of the LED display screen and the second brightness of the target light source for irradiating the part of the electronic ink screen that displays the target pattern based on the mosquito density, environmental data, and road condition data; wherein, the first brightness is less than the current brightness of the LED display screen; calculate the first driving current corresponding to the first brightness and the second driving current corresponding to the second brightness.

[0162] In some embodiments, the control module 330 is configured to control an LED display to perform display by using a first driving current, control an electronic ink screen to display a target pattern, and control a target light source to irradiate a part of the electronic ink screen displaying the target pattern by using a second driving current.

[0163] Please refer to Figure 4 , Figure 4 which is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As Figure 4 shown, the electronic device 400 includes: one or more processors 410 and a memory 420. Figure 4 Here, one processor 410 is taken as an example.

[0164] In some embodiments, the processor 410 and the memory 420 may be connected through a bus or other means. Figure 4 Here, connection through a bus is taken as an example.

[0165] In some embodiments, the processor 410 is configured to obtain environmental data and road condition data from a sensor network; calculate the mosquito density of a preset area range including a traffic display screen based on the environmental data and the road condition data; determine whether it is necessary to switch the electronic ink screen from a transparent display state to a non-transparent display state based on the mosquito density; when it is determined that it is necessary to switch the electronic ink screen from a transparent display state to a non-transparent display state, calculate a first brightness of the LED display screen and a second brightness of the target light source for irradiating a part of the electronic ink screen displaying the target pattern based on the mosquito density, the environmental data, and the road condition data; wherein, the first brightness is less than the current brightness of the LED display screen; calculate a first driving current corresponding to the first brightness and a second driving current corresponding to the second brightness; control the LED display screen to perform display by using the first driving current, control the electronic ink screen to display the target pattern, and control the target light source to irradiate a part of the electronic ink screen displaying the target pattern by using the second driving current.

[0166] In some embodiments, the memory 420, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions / modules of the control method of the traffic display screen in the embodiment of the present application. The processor 410 executes various functional applications and data processing of the electronic device 400 by running the non-volatile software programs, instructions, and modules stored in the memory 420, that is, implements the control method of the traffic display screen in the above method embodiment.

[0167] In some embodiments, the memory 420 may include a program storage area and a data storage area. The program storage area may store an operating system and application programs required for at least one function. The data storage area may store data created according to the use of the electronic device 400 and the like. In addition, the memory 420 may include high-speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some embodiments, the memory 420 may optionally include a memory remotely disposed relative to the processor 410, and these remote memories may be connected to the controller through a network. Examples of the above networks include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0168] In some embodiments, one or more modules are stored in the memory 420 and, when executed by one or more processors 410, perform the control method of the traffic display screen in any of the above method embodiments. For example, perform the Figure 1 method steps S100 to step S600 described above.

[0169] Please refer to Figure 5 , Figure 5 which is a structural block diagram of a computer-readable storage medium provided by an embodiment of the present application. Program code 510 is stored in the computer-readable storage medium 500, and the program code 510 can be called by a processor to perform the control method of the traffic display screen described in the above method embodiments.

[0170] The computer-readable storage medium 500 may be an electronic memory such as a flash memory, an electrically erasable programmable read-only memory (EEPROM), a hard disk, or a read-only memory (ROM). Optionally, the computer-readable storage medium includes a non-volatile computer-readable medium. The computer-readable storage medium 500 has a storage space for program code for performing any method step in the above control method of the traffic display screen. These program codes may be read out from or written into one or more computer program products. The program codes may be compressed in an appropriate form, for example.

[0171] In summary, the present application provides a control method, device, electronic device, and storage medium for a traffic display screen. The traffic display screen includes a main body and a display module mounted on the main body. The display module includes an LED display screen and an electronic ink screen. The LED display screen and the electronic ink screen are stacked. The electronic ink screen can be in a transparent display state. The control method for the traffic display screen includes: obtaining environmental data and road condition data from a sensor network; calculating the mosquito density of a preset area range including the traffic display screen based on the environmental data and the road condition data; determining whether it is necessary to switch the electronic ink screen from the transparent display state to a non-transparent display state based on the mosquito density; when it is determined that it is necessary to switch the electronic ink screen from the transparent display state to a non-transparent display state, calculating a first brightness of the LED display screen and a second brightness of a target light source for irradiating a part of the electronic ink screen displaying a target pattern based on the mosquito density, the environmental data, and the road condition data; wherein, the first brightness is less than the current brightness of the LED display screen; calculating a first driving current corresponding to the first brightness and a second driving current corresponding to the second brightness; controlling the LED display screen to display by using the first driving current, controlling the electronic ink screen to display the target pattern, and controlling the target light source to irradiate the part of the electronic ink screen displaying the target pattern by using the second driving current. By determining whether it is necessary to switch the electronic ink screen from the transparent display state to a non-transparent display state based on the mosquito density; when it is determined that it is necessary to switch the electronic ink screen from the transparent display state to a non-transparent display state, calculating the first brightness of the LED display screen and the second brightness of the target light source for irradiating the electronic ink screen based on the mosquito density, the environmental data, and the road condition data, and then controlling the LED display screen to display by using the first driving current, controlling the electronic ink screen to display the target pattern, and controlling the target light source to irradiate the part of the electronic ink screen displaying the target pattern by using the second driving current, the present application can reduce the brightness of the LED display screen when the mosquito density is relatively high to reduce the mosquito density around the display module, so that without using a UV lamp harmful to the human eye to attract mosquitoes, mosquitoes will not block the display module. At the same time, by using the target light source to irradiate the part of the electronic ink screen with the target pattern, the display module can clearly display the target pattern, which can enhance traffic safety.

[0172] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A control method for a traffic display screen, characterized in that the traffic display screen includes a main body and a display module mounted on the main body, the display module includes an LED display screen and an electronic ink screen, the LED display screen and the electronic ink screen are stacked, and the electronic ink screen can be in a transparent display state; the control method of the traffic display screen includes: acquiring environmental data and road condition data from a sensor network; calculating the mosquito density of a preset area range including the traffic display screen based on the environmental data and the road condition data; judging whether it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state based on the mosquito density; when it is judged that it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state, calculating the first brightness of the LED display screen and the second brightness of the target light source for irradiating the electronic ink screen based on the mosquito density, the environmental data and the road condition data; wherein, the first brightness is less than the current brightness of the LED display screen; calculating a first driving current corresponding to the first brightness and a second driving current corresponding to the second brightness; using the first driving current to control the LED display screen to display, controlling the electronic ink screen to display a target pattern, and using the second driving current to control the target light source to irradiate a part of the electronic ink screen where the target pattern is displayed.

2. The control method of the traffic display screen according to claim 1, characterized in that The environmental data includes environmental images, environmental temperature, environmental humidity, environmental wind speed, atmospheric pressure, weather type and light intensity, and the road condition data includes traffic flow. Calculating the mosquito density of a preset area range including the traffic display screen based on the environmental data and the road condition data includes: calculating optical flow data between adjacent frame environmental images based on multiple frames of the environmental images; calculating the number of mosquitoes based on the optical flow data; calculating a basic mosquito density based on the area covered by the environmental images and the number of mosquitoes; performing standardization processing on the environmental temperature, the environmental humidity, the environmental wind speed, the atmospheric pressure, the weather type and the light intensity to obtain standardized environmental temperature parameters, environmental humidity parameters, environmental wind speed parameters, atmospheric pressure parameters, weather type influence parameters and light intensity parameters; calculating a first coefficient corresponding to environmental factors based on the environmental temperature parameters, the environmental humidity parameters, the environmental wind speed parameters, the atmospheric pressure parameters, the weather type influence parameters and the light intensity parameters; calculating a second coefficient corresponding to road condition factors based on the traffic flow; calculating the mosquito density of a preset area range including the traffic display screen based on the first coefficient corresponding to environmental factors, the second coefficient corresponding to road condition factors, the basic mosquito density and a preset function formula.

3. The control method of the traffic display screen according to claim 2, characterized in that, The calculating the second coefficient corresponding to road condition factors based on the traffic flow includes: calculating the value of a headlight influence function according to the traffic flow and the light intensity; calculating the value of an exhaust gas influence function according to the traffic flow, wherein the exhaust gas influence function is a non-linear function, and the exhaust gas influence function includes an exhaust gas influence enhancement coefficient. Calculate the second coefficient corresponding to the road condition factor based on the value of the headlight influence function and the value of the exhaust gas influence function.

4. The control method of the traffic display screen according to claim 1, wherein, When it is determined that it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state, calculating the first brightness of the LED display screen and the second brightness of the target light source for irradiating the electronic ink screen based on the mosquito density, the environmental data, and the road condition data includes: Calculate the first brightness of the LED display screen based on the mosquito density and the illumination intensity in the environmental data; Determine the standard brightness of the traffic display screen based on the weather type in the environmental data; When the first brightness is greater than the standard brightness, determine that the second brightness is 0; When the first brightness is not greater than the standard brightness, calculate the second brightness according to the optimal reflection illuminance of the electronic ink screen and the light source efficiency conversion coefficient.

5. The control method of the traffic display screen according to claim 4, wherein, The calculating the second brightness according to the optimal reflection illuminance of the electronic ink screen and the light source efficiency conversion coefficient when the first brightness is not greater than the standard brightness includes: When the first brightness is not greater than the standard brightness, divide the difference between the optimal reflection illuminance and the standard brightness by the light source efficiency conversion coefficient to obtain the second brightness.

6. The control method of the traffic display screen according to claim 1, characterized in that The calculating the first driving current corresponding to the first brightness and the second driving current corresponding to the second brightness includes: Calculate the first driving current corresponding to the first brightness according to the first correspondence function between the preset first brightness and the first driving current, and calculate the second driving current corresponding to the second brightness according to the second correspondence function between the preset second brightness and the second driving current; or Calculate multiple values of the first driving current that enables the LED display screen to gradually switch to the first brightness within the refresh time according to the preset refresh time of the electronic ink screen, the current driving current of the LED display screen, and the first correspondence function, and calculate multiple values of the second driving current that enables the target light source to gradually switch to the second brightness within the refresh time according to the refresh time, the current driving current of the target light source, and the second correspondence function.

7. The control method of the traffic display screen according to claim 1, wherein Using the first driving current to control the LED display screen to display, controlling the electronic ink screen to display the target pattern, and using the second driving current to control the target light source to irradiate the part of the electronic ink screen that displays the target pattern includes: When the color of the current pattern displayed on the electronic ink screen is different from the color of the target pattern, control the LED display screen to display using the first driving current according to the refresh time of the electronic ink screen, wherein the color after mixing the display color of the LED display screen and the color of the current pattern is the color of the target pattern; Control the electronic ink screen to be fully refreshed to display the target pattern; Use the second driving current to control the target light source to irradiate the part of the electronic ink screen that displays the target pattern.

8. A control device for a traffic display screen, characterized in that, The traffic display screen includes a main body and a display module installed on the main body. The display module includes an LED display screen and an electronic ink screen. The LED display screen and the electronic ink screen are stacked, and the electronic ink screen can be in a transparent display state; The control device of the traffic display screen includes: An acquisition module, configured to acquire environmental data and road condition data from a sensor network; A calculation module, configured to calculate the mosquito density of a preset area range including the traffic display screen based on the environmental data and the road condition data; Based on the mosquito density, determine whether it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state; When it is determined that it is necessary to switch the electronic ink screen from the transparent display state to the non-transparent display state, calculate a first brightness of the LED display screen and a second brightness of a target light source for irradiating the electronic ink screen based on the mosquito density, the environmental data, and the road condition data; wherein, the first brightness is less than the current brightness of the LED display screen; Calculate a first drive current corresponding to the first brightness and a second drive current corresponding to the second brightness; A control module, configured to control the LED display screen to display by using the first drive current, control the electronic ink screen to display a target pattern, and control the target light source to irradiate a part of the electronic ink screen displaying the target pattern by using the second drive current.

9. An electronic device, characterized in that, The electronic device includes: At least one processor; and, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor. The instructions are executed by the at least one processor to enable the at least one processor to execute the control method of the traffic display screen according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores an executable program. The executable program is executed by a processor to implement the control method of the traffic display screen according to any one of claims 1 to 7.

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