Traffic information presentation method, electronic device, vehicle, medium, and program product

Abstract

This application relates to the field of data processing and discloses a traffic information prompting method, electronic device, vehicle, medium, and program product. In this method, while a target vehicle is traveling on a first road, the system detects whether preset road conditions exist at a distance of a first distance from the target vehicle. If so, and if it is predicted that the target vehicle will travel on a second road, a target speed limit is displayed. The target speed limit is determined based on the marker parameters of detected speed limit signs and the map speed limit value of the first road on an electronic map. The second road is an auxiliary road of the first road. Displaying the target speed limit when it is predicted that the target vehicle will travel on an auxiliary road of the first road can improve the recognition accuracy of speed limit signs in situations where preset road conditions exist (e.g., scenarios with main road-auxiliary road intersections), thereby improving the driver's driving experience.

Description

Technical Field

[0001] This application relates to the field of data processing, and in particular to a traffic information prompting method, electronic device, vehicle, medium, and program product. Background Technology

[0002] To ensure traffic safety and improve traffic efficiency, speed limit signs are usually placed on roads. These signs set reasonable speed limits based on different road conditions (such as road surface conditions, traffic flow, and visibility) to ensure vehicles travel within a safe speed range. For example, setting lower speed limits at curves, intersections, and school zones can effectively reduce the probability of accidents and ensure traffic safety.

[0003] Currently, when a vehicle is in motion, it typically determines the speed limit information based on traffic signs related to vehicle speed limits on the road obtained by the forward-facing camera and / or the speed indicated by the navigation system, and displays the speed limit information in the corresponding display area in the vehicle to remind the driver.

[0004] However, in complex road driving environments (such as when the vehicle is on a ramp or at an intersection of a main road and a side road), the accuracy of the speed limit information determined by the above method may decrease, for example, due to misidentification, which in turn affects the driver's driving experience. Summary of the Invention

[0005] The purpose of this application is to provide a traffic information prompting method, electronic device, vehicle, medium, and program product.

[0006] The first aspect of this application provides a traffic information prompting method applied to an electronic device. The method includes: detecting whether preset road conditions exist at a position at a distance of a first distance from the target vehicle while the target vehicle is traveling on a first road; if so, and if it is predicted that the target vehicle will travel on a second road, displaying a target speed limit value, wherein the target speed limit value is determined based on the sign parameters of detected speed limit signs and the map speed limit value of the first road in an electronic map, and the second road is an auxiliary road of the first road.

[0007] In this embodiment of the application, when it is predicted that the target vehicle will travel on the auxiliary road of the first road, the above-mentioned target speed limit value is displayed, which can improve the recognition accuracy of speed limit signs under preset road conditions (such as scenarios where there is a main road-auxiliary road intersection), thereby improving the driving experience of drivers.

[0008] Furthermore, the target speed limit value determined based on the detected speed limit sign parameters can filter out speed limit signs that do not meet the criteria, reducing the probability of misidentification. Simultaneously, combining the target speed limit value with the map speed limit value of the first road in the electronic map ensures the reasonableness of the target speed limit value and more accurately distinguishes between main road speed limits and auxiliary road speed limits (for example, the speed limit on an auxiliary road should be lower than the speed limit in the navigation system before reaching the auxiliary road, while the speed limit on the main road should be close to the speed limit in the navigation system), thereby further improving the accuracy of speed limit sign recognition.

[0009] In one possible implementation of the first aspect above, detecting whether there are preset road conditions at a location at a first distance from the target vehicle includes: detecting whether there are preset road conditions at a location at a first distance from the target vehicle based on image data acquired by the front-facing camera of the target vehicle; or determining whether there are preset road conditions at a location at a first distance from the target vehicle based on an electronic map of the area where the first road is located.

[0010] In one possible implementation of the first aspect above, the target speed limit is the speed indicated by a speed limit sign located at the location of the preset road conditions; or, the target speed limit is the speed indicated by a speed limit sign located on the first road at a distance less than or equal to a first distance from the location of the preset road conditions.

[0011] In one possible implementation of the first aspect above, the target vehicle is predicted to travel on the second road by: obtaining road information of the first road and vehicle parameters of the target vehicle; determining that the target vehicle will travel on the second road based on the road information of the first road and the vehicle parameters of the target vehicle; or, determining that the target vehicle will travel on the second road based on the vehicle parameters of the target vehicle.

[0012] In one possible implementation of the first aspect above, determining that the target vehicle will travel on the second road based on the road information of the first road and the vehicle parameters of the target vehicle includes: determining the road topology of the first road based on the road information of the first road and the vehicle parameters of the target vehicle, wherein the road topology includes at least one of the following information: lane line coordinates of at least one lane of the first road, lane centerline of at least one lane of the first road, corner coordinates of the exit point, position coordinates of speed limit signs, and position coordinates of the target vehicle; corresponding to the existence of preset road conditions in the road topology, the position coordinates of the target vehicle are located to the right of the corner coordinates of the exit point, thus determining that the target vehicle will travel on the second road.

[0013] In one possible implementation of the first aspect above, the road information includes at least one of the following: lane lines of the first road, curb of the first road, guide zone information of the first road, or fence information of the first road; the vehicle parameters include the position information of the target vehicle on the first road.

[0014] In one possible implementation of the first aspect above, the vehicle parameters include at least one of the following: turn signal information of the target vehicle, steering wheel information of the target vehicle, or vehicle speed information of the target vehicle; and, based on the vehicle parameters of the target vehicle, determining that the target vehicle will travel on the second road includes any one of the following: instructing the target vehicle to change lanes to the right lane corresponding to the turn signal information of the target vehicle, determining that the target vehicle will travel on the second road; instructing the target vehicle to change lanes to the right lane corresponding to the steering wheel information of the target vehicle, determining that the target vehicle will travel on the second road; or determining that the target vehicle will travel on the second road corresponding to the acceleration of the target vehicle being less than 0 during a first time period.

[0015] In one possible implementation of the first aspect above, displaying the target speed limit when it is predicted that the target vehicle will travel on the second road includes: displaying the target speed limit after it is predicted that the target vehicle will travel on the second road; or, displaying the target speed limit after it is predicted that the target vehicle will travel on the second road and after detecting that the distance between the target vehicle and the speed limit sign corresponding to the target speed limit is less than a preset distance.

[0016] In this embodiment, when the distance between the target vehicle and the speed limit sign corresponding to the target speed limit is less than a preset distance, the target speed limit is displayed, which can achieve the effect of reminding the driver of road speed limit information in advance, thereby improving driving safety.

[0017] In one possible implementation of the first aspect described above, the sign parameters include at least one of the following: the distance between the speed limit sign and the target vehicle in a first direction, wherein the first direction is the direction of travel of the target vehicle; the distance between the speed limit sign and the curb of the first road in a second direction, wherein the second direction is perpendicular to the first direction; the height of the speed limit sign; the moving speed of the speed limit sign; the speed indicated by the speed limit sign; the type of the speed limit sign, wherein the type of the speed limit sign includes at least one of the following: a fixed speed limit sign, a variable speed limit sign; the maximum road speed limit in the area where the first road is located; the road speed limit corresponding to the road type of the first road, wherein... In this context, the road type includes at least one of the following: expressway, elevated road, urban road, arterial road, secondary arterial road, branch road, rural road, mountain road, tunnel, bridge, parking lot, provincial road, county road, and township road; or, the road speed limit feature corresponding to the first road type, wherein the road speed limit feature is used to indicate the numerical characteristic of the road speed limit, and the road speed limit feature includes at least one of the following: the unit digit of the road speed limit value for expressways is not 5, the unit digit of the road speed limit value for national highways is not 5, the road speed limit for county roads is less than or equal to 80 km / h, the road speed limit for township roads is less than or equal to 80 km / h, and the road speed limit for rural roads is less than... The speed limit is 80 km / h or greater, or 20 km / h or greater on highways, or 20 km / h or greater on national highways; and the speed limit sign corresponding to the target speed limit meets at least one of the following conditions: the distance between the speed limit sign corresponding to the target speed limit and the target vehicle in the first direction is less than or equal to a first distance threshold; the distance between the speed limit sign corresponding to the target speed limit and the curb of the first road in the second direction is less than or equal to a second distance threshold; the height of the speed limit sign corresponding to the target speed limit is greater than a first height threshold and less than a second height threshold, wherein the first height threshold is greater than 0 and less than the second height threshold. The moving speed of the speed limit sign corresponding to the target speed limit value is less than or equal to the preset moving speed; the speed indicated by the speed limit sign corresponding to the target speed limit value is less than or equal to the maximum speed limit of the area where the first road is located; the speed indicated by the speed limit sign corresponding to the target speed limit value conforms to the road speed limit characteristics of the first road; the type of the speed limit sign corresponding to the target speed limit value is the speed limit sign with the highest priority among multiple detected speed limit sign types, wherein the priority of variable speed limit signs is higher than that of fixed speed limit signs; or, the speed indicated by the speed limit sign corresponding to the target speed limit value is the speed limit sign with the largest value among multiple detected speed limit sign types.

[0018] In this embodiment of the application, the speed limit sign corresponding to the target speed limit value is determined based on the sign parameter, which can filter out suspected speed limit signs that do not meet the conditions and reduce the probability of misidentification.

[0019] In one possible implementation of the first aspect above, the target speed limit value satisfies the following condition: the target speed limit value is less than a speed threshold, which is the speed value obtained by subtracting a preset value from the map speed limit value.

[0020] In this embodiment of the application, by combining the map speed limit value of the first road in the electronic map to determine the target speed limit value, it can be ensured that the target speed limit value is reasonable compared to the speed limit value of the second road (for example, the speed limit value of the auxiliary road should be lower than the minimum speed limit value of the main road based on the map speed limit value), thereby further improving the recognition accuracy of speed limit signs and thus improving the driving experience of drivers.

[0021] In one possible implementation of the first aspect above, displaying the target speed limit value includes at least one of the following: displaying the target speed limit value on the instrument panel of the target vehicle; displaying the target speed limit value on the central control screen of the target vehicle; displaying the target speed limit value in the head-up display area of ​​the target vehicle; displaying the target speed limit value in the rearview mirror of the target vehicle; displaying the target speed limit value in the side window of the target vehicle; or, displaying the target speed limit value on the door control screen of the target vehicle.

[0022] In one possible implementation of the first aspect above, the method further includes: broadcasting the target speed limit via voice.

[0023] In one possible implementation of the first aspect above, the method further includes controlling the speed of the target vehicle to be less than or equal to the target speed limit.

[0024] In one possible implementation of the first aspect above, the method further includes: not displaying the target speed limit value if it is predicted that the target vehicle will continue to travel on the first road.

[0025] In one possible implementation of the first aspect above, the method further includes: when it is predicted that the target vehicle will continue to travel on the first road, detecting that the distance between the target vehicle and the first speed limit sign is less than a preset distance, wherein the speed indicated by the first speed limit sign is within a preset speed range, and the preset speed range is determined based on the map speed limit value; and displaying the speed indicated by the first speed limit sign.

[0026] In this embodiment of the application, the speed indicated by the first speed limit sign is determined by combining the speed limit value of the target road in the electronic map. This can ensure the rationality of the speed indicated by the first speed limit sign (for example, the temporary speed limit or the latest speed limit of the road should be within the speed range defined by the speed limit value of the first road in the map). This can further improve the recognition accuracy of the speed limit signs on the main road, thereby improving the driving experience of the driver.

[0027] A second aspect of this application provides an electronic device including a processor and a memory, the memory being used to store program instructions, and the processor being used to invoke the program instructions to execute any of the methods described in the first aspect above.

[0028] A third aspect of this application provides a vehicle including a processor and a memory, the memory for storing program instructions, and the processor for invoking the program instructions to execute any of the methods described in the first aspect above.

[0029] A fourth aspect of this application provides a computer-readable storage medium storing instructions that, when executed, implement any of the methods described in the first aspect above.

[0030] The fifth aspect of this application provides a computer program product including instructions that, when executed, implement any of the methods described in the first aspect above. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 An embodiment of this application illustrates a scenario where a speed limit sign is located between a main road and an auxiliary road.

[0033] Figure 2 A flowchart illustrating a traffic information prompting method is shown according to an embodiment of this application;

[0034] Figure 3A According to an embodiment of this application, a schematic diagram of a speed limit sign located at the intersection of a main road and an auxiliary road is shown;

[0035] Figure 3B According to an embodiment of this application, a schematic diagram of a scenario is shown where a speed limit sign is located on a first road and the distance to the intersection of the main road and the auxiliary road is less than a first distance.

[0036] Figure 4A A schematic diagram of a road topology is shown according to an embodiment of this application;

[0037] Figure 4B According to an embodiment of this application, a schematic diagram of a road topology structure in which a target vehicle will travel on a second road is shown;

[0038] Figure 4CA schematic diagram of another road topology is shown according to an embodiment of this application;

[0039] Figure 4D According to an embodiment of this application, a schematic diagram of another road topology structure in which a target vehicle will travel on a second road is shown;

[0040] Figure 5A A schematic diagram of a first direction and a second direction is shown according to an embodiment of this application;

[0041] Figure 5B A schematic diagram of another first direction and a second direction is shown according to an embodiment of this application;

[0042] Figure 6 A schematic diagram of the structure of an electronic device 100 is shown according to an embodiment of this application;

[0043] Figure 7 A schematic diagram of the structure of a target vehicle 200 is shown according to an embodiment of this application. Detailed Implementation

[0044] The illustrative embodiments of this application include, but are not limited to, a traffic information prompting method, electronic device, vehicle, medium, and program product.

[0045] As mentioned earlier, currently, when a vehicle is in motion, it typically determines the speed limit information based on traffic signs related to vehicle speed limits on the road obtained by the forward-facing camera and / or the speed indicated by the navigation system, and displays the speed limit information in the corresponding display area in the vehicle to remind the driver.

[0046] However, in complex road driving environments (such as when a vehicle is on a ramp or at an intersection of a main road and an auxiliary road, and there is only one speed limit sign between the main road and the auxiliary road), the accuracy of the speed limit information determined by the above method may decrease, for example, due to misidentification, which in turn affects the driver's driving experience.

[0047] For example, such as Figure 1 As shown, speed limit sign 13 is located between main road 11 and auxiliary road 12. Using the above method, the following situations may occur: regardless of whether the target vehicle is traveling on main road 11 or auxiliary road 12, the target vehicle will display the speed indicated by speed limit sign 13; or, regardless of whether the target vehicle is traveling on main road 11 or auxiliary road 12, the target vehicle will not display the speed indicated by speed limit sign 13, but will display the speed indicated by the navigation system; or, the speed indicated by speed limit sign 13 may be identified as the speed limit of main road 11.

[0048] Therefore, if the speed limit sign 13 indicates the speed limit for auxiliary road 12, and the target vehicle is about to travel on main road 11, the target vehicle may travel at a lower speed, affecting the driver's driving experience. If the speed limit sign 13 indicates the speed limit for main road 11, and the target vehicle is about to travel on auxiliary road 12, the target vehicle may travel at a higher speed, affecting the driver's driving experience, and may even exceed the speed limit of auxiliary road 12, affecting driving safety.

[0049] In view of this, embodiments of this application provide a traffic information prompting method. In this method, while a target vehicle is traveling on a first road, it is detected whether a preset road condition exists at a distance of a first distance from the target vehicle; if it is predicted that the target vehicle will travel on a second road, a target speed limit is displayed. The target speed limit is determined based on the marker parameters of detected speed limit signs and the map speed limit of the first road in an electronic map, where the second road is an auxiliary road to the first road.

[0050] In other words, under the condition of preset road conditions (such as the scenario of a main road-auxiliary road intersection), and when it is predicted that the target vehicle will travel on the auxiliary road of the first road, the target speed limit value is displayed based on the sign parameters of the detected speed limit signs and the map speed limit value of the first road in the electronic map.

[0051] It is understandable that displaying the target speed limit value when it is predicted that the target vehicle will travel on the auxiliary road of the first road can improve the recognition accuracy of speed limit signs in the presence of preset road conditions (such as the scenario of the intersection of the main road and the auxiliary road), thereby improving the driving experience of the driver.

[0052] Furthermore, the target speed limit value determined based on the detected speed limit sign parameters can filter out speed limit signs that do not meet the criteria, reducing the probability of misidentification. Simultaneously, combining the target speed limit value with the map speed limit value of the first road in the electronic map ensures the reasonableness of the target speed limit value and more accurately distinguishes between main road speed limits and auxiliary road speed limits (for example, the speed limit on an auxiliary road should be lower than the speed limit in the navigation system before reaching the auxiliary road, while the speed limit on the main road should be close to the speed limit in the navigation system), thereby further improving the accuracy of speed limit sign recognition.

[0053] It is understandable that the preset road conditions include, but are not limited to, situations where two roads intersect, such as the intersection of a main road and an auxiliary road, or a ramp.

[0054] To better understand the technical solutions of the embodiments of this application, the traffic information prompting method provided by the embodiments of this application will be described in detail below, taking a main road-auxiliary road intersection under preset road conditions as an example, in conjunction with the accompanying drawings.

[0055] Figure 2 A flowchart illustrating a traffic information prompting method is shown according to an embodiment of this application. It can be understood that... Figure 2 The electronic device 100 is the primary entity executing each step of the process shown. For simplicity, the following description... Figure 2 The execution entity of each step in the process shown will not be described again.

[0056] like Figure 2 As shown, the process includes, but is not limited to, the following steps:

[0057] S201: While the target vehicle is traveling on the first road, detect whether there is a main road-auxiliary road intersection at a distance of the first distance from the target vehicle.

[0058] In some embodiments, the electronic device 100 determines, based on image data acquired by the front-facing camera of the target vehicle, that a main road-auxiliary road intersection exists at a first distance from the target vehicle. Alternatively, the electronic device 100 determines, based on an electronic map of the area where the first road is located, that a main road-auxiliary road intersection exists at a first distance from the target vehicle.

[0059] In some cases, if the judgment result is yes, then S202 is executed. If it is predicted that the target vehicle will travel on the second road, the target speed limit value is displayed. The target speed limit value is determined based on the sign parameters of the detected speed limit signs and the map speed limit value of the first road in the electronic map. The second road is an auxiliary road of the first road.

[0060] In other cases, if the judgment result is negative, S201 is executed to detect whether there is a main road-auxiliary road intersection at a position at a distance of the first distance from the target vehicle while the target vehicle is traveling on the first road.

[0061] It is understood that the first distance is greater than 0, and the first distance can be 200 meters, 300 meters, 400 meters, 500 meters, 600 meters, etc. This application does not impose any restrictions on this.

[0062] In some embodiments, the target speed limit is the speed indicated by a speed limit sign located at the intersection of the main road and the secondary road. Alternatively, the target speed limit is the speed indicated by a speed limit sign located on the first road at a distance less than or equal to a first distance from the intersection of the main road and the secondary road.

[0063] For example, Figure 3A According to an embodiment of this application, a schematic diagram of a speed limit sign located at the intersection of a main road and an auxiliary road is shown.

[0064] like Figure 3AAs shown, the speed limit sign is located at the intersection of the first road and the second road, that is, at the intersection of the main road and the auxiliary road.

[0065] For example, Figure 3B According to an embodiment of this application, a schematic diagram of a scenario is shown where a speed limit sign is located on a first road and the distance to the intersection of the main road and the auxiliary road is less than a first distance.

[0066] like Figure 3B As shown, the speed limit sign is located on the first road, and the distance d between the speed limit sign and the intersection of the main road and the auxiliary road is less than the first distance. That is, the speed limit sign is located on the first road, and the distance between the speed limit sign and the intersection of the main road and the auxiliary road is less than the first distance.

[0067] S202: If it is predicted that the target vehicle will travel on the second road, the target speed limit is displayed. The target speed limit is determined based on the sign parameters of the detected speed limit signs and the map speed limit of the first road in the electronic map. The second road is an auxiliary road of the first road.

[0068] In some embodiments, the electronic device 100 predicts that a target vehicle will travel on a second road by: acquiring road information of a first road and vehicle parameters of the target vehicle; determining that the target vehicle will travel on a second road based on the road information of the first road and the vehicle parameters of the target vehicle; or, determining that the target vehicle will travel on a second road based on the vehicle parameters of the target vehicle.

[0069] In some embodiments, road information includes at least one of the following: lane lines of the first road, curb of the first road, guide zone information of the first road, or fence information of the first road; vehicle parameters include the location information of the target vehicle on the first road.

[0070] In some embodiments, vehicle parameters include at least one of the following: turn signal information of the target vehicle, steering wheel information of the target vehicle, or vehicle speed information of the target vehicle.

[0071] In some embodiments, the electronic device 100 determines that the target vehicle will travel on the second road based on the road information of the first road and the vehicle parameters of the target vehicle by the following method: determining the road topology of the first road based on the road information of the first road and the vehicle parameters of the target vehicle. The road topology includes at least one of the following information: lane line coordinates of at least one lane of the first road, lane centerline of at least one lane of the first road, corner coordinates of the exit point, position coordinates of speed limit signs, and position coordinates of the target vehicle; corresponding to the presence of a main road-auxiliary road intersection in the road topology, the position coordinates of the target vehicle are located to the right of the corner coordinates of the exit point, thus determining that the target vehicle will travel on the second road.

[0072] For example, Figure 4A A schematic diagram of a road topology is shown according to an embodiment of this application.

[0073] like Figure 4A As shown, the road topology includes information such as the lane lines of the first lane, the lane lines of the second lane, the coordinates of the speed limit sign, the coordinates of the sink corner point, and the coordinates of the target vehicle. It can be understood that if the target vehicle's coordinates are detected to the right of the sink corner point, it can be determined that the target vehicle will be traveling on the second road. For example, refer to... Figure 4B The diagram shows the road topology of the second road where the target vehicle will travel.

[0074] like Figure 4B As shown, the road topology includes information such as the lane lines of the first lane, the lane lines of the second lane, the coordinates of the speed limit sign, the coordinates of the exit corner point, and the coordinates of the target vehicle. Furthermore, the target vehicle's coordinates are located to the right of the exit corner point coordinates.

[0075] For example, Figure 4C A schematic diagram of a road topology is shown according to an embodiment of this application.

[0076] like Figure 4C As shown, the road topology includes information such as the lane lines of the first lane, the lane lines of the second lane, the coordinates of the speed limit sign, the coordinates of the sink corner point, and the coordinates of the target vehicle. It can be understood that if the target vehicle's coordinates are detected to the right of the sink corner point, it can be determined that the target vehicle will be traveling on the second road. For example, refer to... Figure 4D The diagram shows the road topology of the second road where the target vehicle will travel.

[0077] like Figure 4D As shown, the road topology includes information such as the lane lines of the first lane, the lane lines of the second lane, the coordinates of the speed limit sign, the coordinates of the exit corner point, and the coordinates of the target vehicle. Furthermore, the target vehicle's coordinates are located to the right of the exit corner point coordinates.

[0078] In some embodiments, the electronic device 100 determines that the target vehicle will travel on the second road based on vehicle parameters of the target vehicle by at least one of the following methods: instructing the target vehicle to change lanes to the right lane according to the turn signal information of the target vehicle, thus determining that the target vehicle will travel on the second road; instructing the target vehicle to change lanes to the right lane according to the steering wheel information of the target vehicle, thus determining that the target vehicle will travel on the second road; or determining that the target vehicle will travel on the second road according to the acceleration of the target vehicle being less than 0 during a first time period.

[0079] In other words, if the electronic device 100 detects the target vehicle's turn signal information indicating that the target vehicle should change lanes to the right lane, or if the electronic device 100 detects the target vehicle's steering wheel information indicating that the target vehicle should change lanes to the right lane, or if the electronic device 100 detects that the target vehicle decelerates within the first time period, then it is predicted that the target vehicle will travel on the second lane.

[0080] In some embodiments, after it is predicted that the target vehicle will travel on the second road, the target speed limit is displayed; or, after it is predicted that the target vehicle will travel on the second road and the distance between the target vehicle and the speed limit sign corresponding to the target speed limit is detected to be less than a preset distance, the target speed limit is displayed.

[0081] It is understandable that, in some cases, corresponding to Figure 3B In the scenario shown, the electronic device 100 can display the target speed limit after predicting that the target vehicle will travel on the second road. The target speed limit is the speed limit value stored when the electronic device 100 detects that the speed limit sign is located on the first road and the distance d between the speed limit sign and the main road-auxiliary road intersection is less than a first distance.

[0082] In other cases, corresponding to Figure 3A In the scenario shown, after predicting that the target vehicle will travel on the second road and detecting that the distance between the target vehicle and the speed limit sign corresponding to the target speed limit is less than a preset distance, the target speed limit is displayed. The target speed limit is the speed indicated by the speed limit sign located at the intersection of the main road and the auxiliary road.

[0083] It is understood that the preset distance is greater than 0. The preset distance can be, for example, 5 meters, 7 meters, 10 meters, 12 meters, 15 meters, etc. This application does not limit the specific value of the preset distance.

[0084] It is understandable that displaying the target speed limit when the distance between the target vehicle and the speed limit sign corresponding to the target speed limit is less than a preset distance can effectively remind drivers of road speed limit information in advance, thereby improving driving safety.

[0085] In some embodiments, the sign parameters include at least one of the following: the distance between the speed limit sign and the target vehicle in a first direction, wherein the first direction is the direction of travel of the target vehicle; the distance between the speed limit sign and the curb of the first road in a second direction, wherein the second direction is a direction perpendicular to the first direction; the height of the speed limit sign; the moving speed of the speed limit sign; the speed indicated by the speed limit sign; the type of the speed limit sign, wherein the type of the speed limit sign includes at least one of the following: a fixed speed limit sign, a variable speed limit sign; the maximum road speed limit in the area where the first road is located; the road speed limit corresponding to the road type of the first road, wherein the road type includes at least one of the following: highway, elevated road, urban road, arterial road. Roads, secondary roads, branch roads, rural roads, mountain roads, tunnels, bridges, parking lots, provincial roads, county roads, township roads; or, the road speed limit characteristics corresponding to the first road type, wherein the road speed limit characteristics are used to indicate the numerical characteristics of the road speed limit, and the road speed limit characteristics include at least one of the following: the unit digit of the road speed limit value of the expressway is not 5, the unit digit of the road speed limit value of the national road is not 5, the road speed limit of the county road is less than or equal to 80 km / h, the road speed limit of the township road is less than or equal to 80 km / h, the road speed limit of the rural road is less than or equal to 80 km / h, the road speed limit of the expressway is greater than or equal to 20 km / h, or, the road speed limit of the national road is greater than or equal to 20 km / h.

[0086] For example, Figure 5A A schematic diagram of a first direction and a second direction is shown according to an embodiment of this application.

[0087] like Figure 5A As shown, the target vehicle is traveling on the target road. The first direction is the extension direction of the target road, and the second direction is perpendicular to the first direction.

[0088] For example, Figure 5B According to an embodiment of this application, a schematic diagram of another first direction and a second direction is shown.

[0089] like Figure 5B As shown, the target vehicle is traveling on the target road, with the first direction being the direction in which the target road extends, and the second direction perpendicular to the first direction. Furthermore, Figure 5B The second direction shown is the same as Figure 5A The directions shown are opposite.

[0090] In some embodiments, the speed limit sign corresponding to the target speed limit value satisfies at least one of the following conditions: the distance between the speed limit sign corresponding to the target speed limit value and the target vehicle in a first direction is less than or equal to a first distance threshold; the distance between the speed limit sign corresponding to the target speed limit value and the curb of the first road in a second direction is less than or equal to a second distance threshold; the height of the speed limit sign corresponding to the target speed limit value is greater than a first height threshold and less than a second height threshold, wherein the first height threshold is greater than 0 and less than the second height threshold; the moving speed of the speed limit sign corresponding to the target speed limit value is less than or equal to a preset moving speed; the speed indicated by the speed limit sign corresponding to the target speed limit value is less than or equal to the maximum speed limit of the area where the first road is located; the speed indicated by the speed limit sign corresponding to the target speed limit value conforms to the road speed limit characteristics of the first road; the type of the speed limit sign corresponding to the target speed limit value is the highest priority speed limit sign among multiple detected speed limit sign types, wherein the priority of a variable speed limit sign is higher than the priority of a fixed speed limit sign; or, the speed indicated by the speed limit sign corresponding to the target speed limit value is the speed limit sign with the largest value among multiple detected speed limit sign types.

[0091] It is understood that the first distance threshold is greater than 0, and the first distance threshold can be, for example, 50 meters, 60 meters, 70 meters, 80 meters, 90 meters, 100 meters, etc., which is not limited in this application. The second distance threshold is greater than 0, and the first distance threshold can be, for example, 1 meter, 2 meters, 3 meters, 4 meters, etc., which is not limited in this application. The first height threshold is greater than 0, and the first height threshold can be, for example, 0.2 meters, 0.3 meters, 0.4 meters, 0.5 meters, etc., which is not limited in this application. The second height threshold is greater than the first height threshold, and the second height threshold can be, for example, 2 meters, 3 meters, 4 meters, 5 meters, 6 meters, 7 meters, etc., which is not limited in this application. The preset movement speed is greater than 0, and the preset movement speed can be, for example, 0.5 meters per second, 0.75 meters per second, 1 meter per second, 2 meters per second, etc., which is not limited in this application.

[0092] It is understandable that determining the speed limit sign corresponding to the target speed limit value based on the sign parameters can filter out suspected speed limit signs that do not meet the conditions, thus reducing the probability of misidentification.

[0093] In some embodiments, the target speed limit value satisfies the following condition: the target speed limit value is less than a speed threshold, where the speed threshold is the speed value obtained by subtracting a preset value from the map speed limit value.

[0094] For example, assuming the target speed limit is S1, the map speed limit of the first road is S2, and the preset value is S3, the speed threshold can be S2-S3, and S1 satisfies the following relationship: S1≤S2-S3.

[0095] S3 can be 10 km / h, 15 km / h, 20 km / h, 25 km / h, etc. This application does not limit the specific value of the preset value, which can be set by the developers based on experience.

[0096] It is understandable that combining the speed limit value of the first road with the map speed limit value of the electronic map to determine the target speed limit value can ensure the reasonableness of the target speed limit value of the second road (for example, the speed limit value of the auxiliary road should be lower than the minimum speed limit value of the main road based on the map speed limit value), thereby further improving the recognition accuracy of speed limit signs and thus improving the driving experience of drivers.

[0097] In some embodiments, the electronic device 100 displays the target speed limit value in at least one of the following ways: displaying the target speed limit value on the instrument panel of the target vehicle; displaying the target speed limit value on the central control screen of the target vehicle; displaying the target speed limit value in the head-up display area of ​​the target vehicle; displaying the target speed limit value in the rearview mirror of the target vehicle; displaying the target speed limit value in the side window of the target vehicle; or displaying the target speed limit value on the door control screen of the target vehicle.

[0098] It is understood that in other embodiments, the above... Figure 1 The steps shown can be combined, deleted, or replaced with other steps that are more conducive to achieving the purpose of this application, and this application does not impose any restrictions on them.

[0099] For example, in some embodiments, the electronic device 100 may also play the target speed limit value in the form of voice broadcast while displaying the target speed limit value.

[0100] Or, for example, in other embodiments, the electronic device 100 may also control the speed of the target vehicle to be less than or equal to the target speed limit while displaying the target speed limit value.

[0101] In some embodiments, if it is predicted that the target vehicle will continue to travel on the first road, the target speed limit is not displayed.

[0102] It is understood that the above description only uses the target speed limit value as the speed limit value of the second road as an example. In other embodiments, when the electronic device 100 predicts that the target vehicle will continue to travel on the first road, it detects that the distance between the target vehicle and the first speed limit sign is less than a preset distance. The speed indicated by the first speed limit sign is within a preset speed range, which is determined based on the map speed limit value. The speed indicated by the first speed limit sign is displayed.

[0103] For example, the speed indicated by the first speed limit sign is greater than or equal to a first speed threshold, and the speed indicated by the first speed limit sign is less than or equal to a second speed threshold; wherein, the value of the first speed threshold is the map speed limit value minus a first preset value, and the value of the second speed threshold is the map speed limit value plus a second preset value.

[0104] For example, assuming the speed indicated by the first speed limit sign is S1, the speed limit value on the target road map is S2, the first preset value is S3, and the second preset value is S4, then the first speed threshold can be S2-S3, the second speed threshold can be S2+S4, and S1 satisfies the following relationship: S2-S3≤S1≤S2+S4.

[0105] Among them, S3 can be 10 km / h, 15 km / h, 20 km / h, 25 km / h, etc., and S4 can be 20 km / h, 40 km / h, 60 km / h, 90 km / h, 120 km / h, etc. This application does not limit the specific values ​​of the first preset value and the second preset value, which can be set by the developers based on experience.

[0106] It is understandable that determining the speed indicated by the first speed limit sign by combining the speed limit value of the target road in the electronic map can ensure the rationality of the speed indicated by the first speed limit sign (for example, temporary speed limits or the latest speed limit of the road should be within the speed range defined by the speed limit value of the first road in the map), thereby further improving the recognition accuracy of speed limit signs on the main road and thus improving the driving experience of drivers.

[0107] It is understood that the method provided in this application can be applied to any electronic device connected to or deployed in the target vehicle. Electronic devices include, but are not limited to, mobile stations (MS) and mobile terminals (MT). For example, an electronic device can be a mobile phone, a wearable device, a tablet computer, or a self-driving terminal. This application does not limit the specific form of the electronic device.

[0108] It is understood that the traffic information prompting method provided in this application embodiment can also be applied to the target vehicle 200. It should be understood that the target vehicle 200 can be any type of vehicle such as a car, truck, motorcycle, bus, ship, airplane, helicopter, lawnmower, recreational vehicle, amusement park vehicle, construction equipment, tram, golf cart, train, and handcart. This application embodiment does not limit the type of the target vehicle 200.

[0109] The structure of the electronic device 100 and the target vehicle 200 will be described in detail below with reference to the accompanying drawings.

[0110] For example, Figure 6 A schematic diagram of the structure of an electronic device 100 is shown according to an embodiment of this application.

[0111] like Figure 6 As shown, the electronic device 100 includes one or more (only one is shown in the figure) processors 110, memory 120, image recognition module 130, interface module 140 and display module 150.

[0112] The processor 110 includes, but is not limited to, a central processing unit (CPU), a microprocessor, an application-specific integrated circuit, etc., for executing relevant programs to achieve the functions required by the electronic device 100 of this application embodiment.

[0113] Memory 120 may include one or more memories for storing data or one or more applications. The memory may be read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM).

[0114] Processor 110 can also be an integrated circuit chip with signal processing capabilities. The aforementioned processor 110 can also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the traffic information prompting method in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory 120. Processor 110 reads the information in memory 120 and, in conjunction with its hardware, completes the functions required by the electronic device 100 in the embodiments of this application.

[0115] The image recognition module 130 is used to recognize the image acquired by the front camera of the target vehicle and determine the speed limit sign.

[0116] Interface module 140 is used to acquire road information of the first road, camera information of the target vehicle (such as images captured by the front camera), etc.

[0117] Display module 150 is used to display the target speed limit value.

[0118] It should be understood that Figure 6 The structure of the electronic device 100 shown is only an example. In other embodiments, the electronic device 100 may include more or fewer modules, which is not limited herein.

[0119] For example, Figure 7 A schematic diagram of the structure of a target vehicle 200 is shown according to an embodiment of this application.

[0120] like Figure 7 As shown, the target vehicle 200 may include various subsystems, such as a driving system 20, a sensor system 21, an autonomous driving system 22, one or more peripheral devices 23, a computer system 24, a power supply 25, and a user interface 26.

[0121] Optionally, the target vehicle 200 may include more or fewer subsystems, and each subsystem may include multiple components. Furthermore, each subsystem and component of the target vehicle 200 may be interconnected via wired or wireless means.

[0122] The mobility system 20 may include components that provide powered motion to the target vehicle 200. In some embodiments, the mobility system 20 may include an engine 201, an energy source 202, a transmission 203, and wheels 204.

[0123] Engine 201 can be an internal combustion engine, an electric motor, an air-compressed engine, or other combinations of engines, such as a hybrid engine consisting of a gasoline engine and an electric motor, or a hybrid engine consisting of an internal combustion engine and an air-compressed engine. Engine 201 converts energy source 202 into mechanical energy. Energy source 202 can include gasoline, diesel, other petroleum-based fuels, propane, other compressed gas-based fuels, ethanol, solar panels, batteries, and other sources of electricity. Energy source 202 can also provide energy to other systems of the target vehicle 200. Transmission 203 transmits mechanical power from engine 201 to wheels 204. Transmission 203 can include a gearbox, a differential, and a drive shaft. In some embodiments, transmission 203 may also include other components, such as a clutch. The drive shaft may include one or more axles that can be coupled to one or more wheels 204.

[0124] Sensor system 21 may include several sensors that sense and measure environmental information about the target vehicle 200. For example, sensor system 21 may include a positioning system 211, an inertial measurement unit (IMU) 212, a radar 213, a laser rangefinder 214, and a camera 215. Sensor system 21 may also include sensors that detect the internal systems of the target vehicle 200. Positioning system 211 may be a Global Positioning System (GPS), a BeiDou system, or another positioning system. In this embodiment, the laser sensor is a very important sensing module in sensor system 21.

[0125] The positioning system 211 can be used to obtain the geographical location of the target vehicle 200. In this embodiment, a laser sensor can be used as part of the positioning system 211 to achieve precise positioning of the target vehicle 200. In some embodiments, the target vehicle 200 can obtain the map speed limit value of the target road in an electronic map through the positioning system 211. The IMU 212 is used to sense changes in the position and orientation of the target vehicle 200 based on inertial acceleration. In some embodiments, the IMU 212 can be a combination of an accelerometer and a gyroscope. The radar 213 can use radio signals to sense objects in the surrounding environment of the target vehicle 200, specifically millimeter-wave radar or lidar. In some embodiments, in addition to sensing objects, the radar 213 can also be used to sense the speed and / or direction of travel of objects. The laser rangefinder 214 can use lasers to sense objects in the environment where the target vehicle 200 is located. In some embodiments, the laser rangefinder 214 can include one or more laser sources, a laser scanner, and one or more detectors, as well as other system components. The camera 215 can be used to capture multiple images of the surrounding environment of the target vehicle 200. The camera 215 may include a front-facing camera and a rear-facing camera. The camera 215 may include different types of cameras such as wide-angle cameras and fisheye cameras. This application does not limit the types of cameras.

[0126] The autonomous driving system 22 can be used to control the operation of the target vehicle 200 and its components. The autonomous driving system 22 can also be referred to as a control system. The autonomous driving system 22 may include various components, including a steering system 221, an accelerator 222, a braking unit 223, a computer vision system 224, a trajectory control system 225, an obstacle avoidance system 226, and a display control system 227.

[0127] The steering system 221 is operable to adjust the forward direction of the target vehicle 200. For example, in some embodiments, the steering system 221 may be a steering wheel system. The throttle 222 is used to control the operating speed of the engine 201 and thus the speed of the target vehicle 200. The braking unit 223 is used to control the deceleration of the target vehicle 200. The braking unit 223 may use friction to slow down the wheels 204. In other embodiments, the braking unit 223 may convert the kinetic energy of the wheels 204 into electrical current. The braking unit 223 may also take other forms to slow down the rotational speed of the wheels 204 to control the speed of the target vehicle 200. The computer vision system 224 is operable to process and analyze images acquired by the camera 215 to identify objects and / or features in the surrounding environment of the target vehicle 200, wherein objects and / or features may include traffic signals, speed limit signs (e.g., the aforementioned speed limit sign spurious objects), road boundaries, and obstacles. The computer vision system 224 may use object recognition algorithms, structure from motion (SFM) algorithms, video tracking, and other computer vision techniques. In some embodiments, the computer vision system 224 can be used to map the environment, track objects, estimate object speeds, etc. The route control system 225 is used to determine the driving route and speed of the target vehicle 200. In some embodiments, the route control system 225 may include a lateral planning module and a longitudinal planning module, which are respectively used to combine data from the obstacle avoidance system 226, the positioning system 211, and one or more predetermined maps to determine the driving route and speed for the target vehicle 200. The obstacle avoidance system 226 is used to identify, evaluate, and avoid or otherwise traverse obstacles in the environment of the target vehicle 200, specifically physical obstacles and virtual moving objects that may collide with the target vehicle 200. The display control system 227 is used to control the display content of various display components of the target vehicle 200 (e.g., the aforementioned dashboard, head-up display area, rearview mirror, etc.). In some embodiments, the autonomous driving system 22 may add or replace components other than those shown and described. Alternatively, some of the components shown above may be reduced.

[0128] The target vehicle 200 interacts with external sensors, other vehicles, other computer systems, or users via peripheral device 23. Peripheral device 23 may include wireless communication system 231, on-board computer 232, microphone 233, speaker 234, and / or display screen 235. In some embodiments, peripheral device 23 provides a means for the user of the target vehicle 200 to interact with user interface 26. For example, on-board computer 232 may provide information to the user of the target vehicle 200. User interface 26 may also operate on-board computer 232 to receive user input. On-board computer 232 may be operated via touchscreen. In other embodiments, peripheral device 23 may provide a means for the target vehicle 200 to communicate with other devices located within the vehicle. For example, microphone 233 may receive audio (e.g., voice commands or other audio input) from the user of the target vehicle 200. Similarly, speaker 234 may output audio (e.g., playing a target speed limit value) to the user of the target vehicle 200. Display screen 235 may output display data (e.g., displaying the target speed limit value) to the user of the target vehicle 200. The wireless communication system 231 can communicate wirelessly with one or more devices, either directly or via a communication network. The wireless communication system 231 can utilize a wireless local area network (WLAN) for communication. In some embodiments, the wireless communication system 231 can communicate directly with devices using an infrared link or Bluetooth. Other wireless protocols, such as various vehicle communication systems, may also be used. For example, the wireless communication system 231 may include one or more dedicated short-range communications (DSRC) devices, which can include public and / or private data communications between vehicles and / or roadside stations.

[0129] Power source 25 can provide power to various components of target vehicle 200. In some embodiments, power source 25 can be a rechargeable lithium-ion or lead-acid battery. One or more such battery packs can be configured to provide power to various components of target vehicle 200. In some embodiments, power source 25 and energy source 202 can be implemented together, as in some fully electric vehicles.

[0130] Some or all of the functions of the target vehicle 200 are controlled by a computer system 24. The computer system 24 may include at least one processor 241, which executes instructions 243 stored in a computer-readable storage medium such as memory 242. The computer system 24 may also be multiple computing devices that control various components or subsystems of the target vehicle 200 in a distributed manner. The processor 241 may be any conventional processor, such as a commercially available central processing unit (CPU). Alternatively, the processor 241 may be a dedicated device such as an application-specific integrated circuit (ASIC) or other hardware-based processor.

[0131] although Figure 7 The processor, memory, and other components of the computer system 24 within the same block are functionally illustrated; however, those skilled in the art will understand that the processor or memory may actually include multiple processors or memories not stored in the same physical housing. For example, memory 242 may be a hard disk drive or other storage medium located in a housing different from that of computer system 24. Therefore, references to processor 241 or memory 242 will be understood to include a collection of processors or memories that may or may not operate in parallel. Unlike using a single processor to perform the steps described herein, some components, such as the steering assembly and deceleration assembly, may each have their own processor that performs calculations only related to the component's specific function.

[0132] In all aspects described herein, processor 241 may be located remotely from target vehicle 200 and may communicate wirelessly with target vehicle 200. In other aspects, some of the processes described herein are executed on processor 241 located within target vehicle 200, while others are executed by remote processor 241, including taking the necessary steps to perform a single operation.

[0133] In some embodiments, memory 242 may contain instructions 243 (e.g., program logic) that can be executed by processor 241 to perform various functions of target vehicle 200, including those described above. Memory 242 may also contain additional instructions, including instructions to send data to, receive data from, interact with, and / or control one or more of the mobility system 20, sensor system 21, autonomous driving system 22, and peripheral devices 23. In addition to instructions 243, memory 242 may also store data such as road maps, route information, vehicle position, direction, speed, and other such vehicle data, as well as other information. This information can be used by target vehicle 200 and computer system 24 during operation of target vehicle 200 in autonomous, semi-autonomous, and / or manual modes.

[0134] User interface 26 is used to provide information to or receive information from a user of target vehicle 200. Optionally, user interface 26 may include one or more input / output devices within a set of peripheral devices 23, such as wireless communication system 231, vehicle computer 232, microphone 233, speaker 234, and display screen 235.

[0135] Computer system 24 can control the functions of target vehicle 200 based on input received from various subsystems (e.g., driving system 20, sensor system 21, and autonomous driving system 22) and from user interface 26. For example, computer system 24 can utilize input from autonomous driving system 22 to control steering system 221 to avoid obstacles detected by sensor system 21 and obstacle avoidance system 226. In some embodiments, computer system 24 can operate to provide control over many aspects of target vehicle 200 and its subsystems. For example, in some embodiments, computer system 24 can operate to control display control system 227 to control target vehicle 200 to display a target speed limit value, for example, via display screen 235.

[0136] Optionally, one or more of these components may be installed separately from or associated with the target vehicle 200. For example, the memory 242 may exist partially or completely separately from the target vehicle 200. The components may be communicatively coupled together in a wired and / or wireless manner.

[0137] Optionally, the components described above are merely examples. In actual applications, components in each of the above modules may be added or removed as needed. Figure 7 This should not be construed as a limitation on the embodiments of this application.

[0138] In some embodiments, this application also provides a computer-readable storage medium storing at least one computer program instruction, at least one program segment, code set, or instruction set, which is loaded and executed by a model training system to implement the traffic information prompting method provided in the above-described method embodiments.

[0139] In some embodiments, this application also provides a computer program product, which includes computer program instructions that, when executed by a model training system, enable a device to implement the traffic information prompting methods provided in the above-described method embodiments.

[0140] Various embodiments of the mechanisms disclosed in this application can be implemented in hardware, software, firmware, or combinations of these implementation methods. Embodiments of this application can be implemented as computer programs or program code executable on a programmable system, the programmable system including at least one processor, a storage system (including volatile and non-volatile memory and / or storage elements), at least one input device, and at least one output device.

[0141] Program code can be applied to input instructions to execute the functions described in this application and generate output information. The output information can be applied to one or more output devices in a known manner. For the purposes of this application, the processing system includes any system having a processor such as, for example, a digital signal processor (DSP), a microcontroller, an application-specific integrated circuit (ASIC), or a microprocessor.

[0142] The program code can be implemented using a high-level procedural language or an object-oriented programming language to communicate with the processing system. Assembly language or machine language can also be used when needed. In fact, the mechanisms described in this application are not limited to any particular programming language. In either case, the language can be a compiled language or an interpreted language.

[0143] In some cases, the disclosed embodiments may be implemented in hardware, firmware, software, or any combination thereof. The disclosed embodiments may also be implemented as instructions carried on or stored thereon on one or more temporary or non-temporary machine-readable (e.g., computer-readable) storage media, which may be read and executed by one or more processors. For example, the instructions may be distributed via a network or through other computer-readable media. Therefore, computer-readable media may include various media capable of storing program code, such as USB flash drives, external hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0144] In the accompanying drawings, some structural or methodological features may be shown in a specific arrangement and / or order. However, it should be understood that such a specific arrangement and / or order may not be necessary. Rather, in some embodiments, these features may be arranged in a manner and / or order different from that shown in the illustrative drawings. Furthermore, the inclusion of structural or methodological features in a particular figure does not imply that such features are required in all embodiments, and in some embodiments, these features may be omitted or may be combined with other features.

[0145] It should be noted that all units / modules mentioned in the device embodiments of this application are logical units / modules. Physically, a logical unit / module can be a physical unit / module, a part of a physical unit / module, or a combination of multiple physical units / modules. The physical implementation of these logical units / modules themselves is not the most important factor; the combination of functions implemented by these logical units / modules is the key to solving the technical problems proposed in this application. Furthermore, to highlight the innovative aspects of this application, the above-described device embodiments of this application have not introduced units / modules that are not closely related to solving the technical problems proposed in this application. This does not mean that the above-described device embodiments do not contain other units / modules.

[0146] It should be noted that in the examples and description of this patent, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0147] Although this application has been illustrated and described with reference to certain preferred embodiments thereof, those skilled in the art should understand that various changes in form and detail may be made thereto without departing from the spirit and scope of this application.

Claims

1. A traffic information prompting method, characterized in that, Applied to electronic devices, the method includes: While the target vehicle is traveling on the first road, it is detected whether there are preset road conditions at a position at a first distance from the target vehicle; If it is predicted that the target vehicle will travel on the second road, the target speed limit is displayed. The target speed limit is determined based on the sign parameters of the detected speed limit signs and the map speed limit of the first road in the electronic map. The second road is an auxiliary road of the first road.

2. The method according to claim 1, characterized in that, The detection of preset road conditions at a distance of a first distance from the target vehicle includes: Based on image data acquired by the front-facing camera of the target vehicle, detect whether preset road conditions exist at a location at a first distance from the target vehicle; or, Based on the electronic map of the area where the first road is located, it is detected whether there are preset road conditions at a position at a first distance from the target vehicle.

3. The method according to claim 1, characterized in that, The target speed limit is the speed indicated by the speed limit sign at the location of the preset road conditions; or, The target speed limit is the speed indicated by a speed limit sign located on the first road and at a distance less than or equal to the first distance from the location of the preset road conditions.

4. The method according to claim 1, characterized in that, The target vehicle will be predicted to travel on the second road using the following method: Obtain the road information of the first road and the vehicle parameters of the target vehicle; Based on the road information of the first road and the vehicle parameters of the target vehicle, it is determined that the target vehicle will travel on the second road; or, Based on the vehicle parameters of the target vehicle, it is determined that the target vehicle will travel on the second road.

5. The method according to claim 4, characterized in that, The step of determining that the target vehicle will travel on the second road based on the road information of the first road and the vehicle parameters of the target vehicle includes: Based on the road information of the first road and the vehicle parameters of the target vehicle, the road topology of the first road is determined, wherein the road topology includes at least one of the following information: lane line coordinates of at least one lane of the first road, lane center line of at least one lane of the first road, corner coordinates of the exit, position coordinates of speed limit signs, and position coordinates of the target vehicle. If the preset road conditions exist in the road topology, and the target vehicle's position coordinates are located to the right of the corner coordinates of the sink exit, it is determined that the target vehicle will travel on the second road.

6. The method according to claim 4, characterized in that, The road information includes at least one of the following: The lane lines of the first road, the curb of the first road, the guide zone information of the first road, or the fence information of the first road; The vehicle parameters include the location information of the target vehicle on the first road.

7. The method according to claim 4, characterized in that, The vehicle parameters include at least one of the following: The target vehicle's turn signal information, the target vehicle's steering wheel information, or the target vehicle's speed information; and... The determination that the target vehicle will travel on the second road based on the vehicle parameters of the target vehicle includes any one of the following: The turn signal information corresponding to the target vehicle instructs the target vehicle to change lanes to the right lane, confirming that the target vehicle will travel on the second road; The steering wheel information corresponding to the target vehicle instructs the target vehicle to change lanes to the right lane, determining that the target vehicle will travel on the second road; If the acceleration of the target vehicle is less than 0 during the first time period, it is determined that the target vehicle will travel on the second road.

8. The method according to any one of claims 1 to 7, characterized in that, The step of displaying the target speed limit when it is predicted that the target vehicle will travel on the second road includes: After predicting that the target vehicle will travel on the second road, the target speed limit is displayed; or, After predicting that the target vehicle will travel on the second road, and detecting that the distance between the target vehicle and the speed limit sign corresponding to the target speed limit value is less than a preset distance, the target speed limit value is displayed.

9. The method according to claim 1, characterized in that, The marker parameters include at least one of the following: The distance between the speed limit sign and the target vehicle in a first direction, wherein the first direction is the direction of travel of the target vehicle; The distance between the speed limit sign and the curb of the first road in a second direction, wherein the second direction is a direction perpendicular to the first direction; The height of speed limit signs; The moving speed of the speed limit sign; The speed indicated by the speed limit sign; The types of speed limit signs include at least one of the following: fixed speed limit signs and variable speed limit signs; The maximum speed limit in the area where the first road is located; The speed limit corresponding to the road type of the first road, wherein the road type includes at least one of the following: expressway, elevated road, urban road, arterial road, secondary arterial road, local road, rural road, mountain road, tunnel, bridge, parking lot, provincial road, county road, township road; or, The road speed limit feature corresponding to the road type of the first road, wherein the road speed limit feature is used to indicate the numerical characteristics of the road speed limit. The road speed limit feature includes at least one of the following: The last digit of the speed limit on highways is not 5. The last digit of the speed limit on national highways is not 5. The speed limit on county roads is 80 kilometers per hour or less. The speed limit on rural roads is 80 kilometers per hour or less. The speed limit on rural roads is 80 kilometers per hour or less. The speed limit on highways is greater than or equal to 20 kilometers per hour, or... The speed limit on national highways is 20 kilometers per hour or higher; and... The speed limit sign corresponding to the target speed limit value satisfies at least one of the following conditions: The speed limit sign corresponding to the target speed limit value is less than or equal to a first distance threshold in the first direction from the target vehicle. The distance between the speed limit sign corresponding to the target speed limit value and the curb of the first road in the second direction is less than or equal to a second distance threshold. The height of the speed limit sign corresponding to the target speed limit value is greater than a first height threshold and less than a second height threshold, wherein the first height threshold is greater than 0 and less than the second height threshold. The moving speed of the speed limit sign corresponding to the target speed limit value is less than or equal to the preset moving speed; The speed indicated by the speed limit sign corresponding to the target speed limit value is less than or equal to the maximum speed limit in the area where the first road is located; The speed indicated by the speed limit sign corresponding to the target speed limit value conforms to the road speed limit characteristics of the first road. The type of speed limit sign corresponding to the target speed limit value is the highest priority speed limit sign among the multiple detected speed limit sign types, wherein the variable speed limit sign has a higher priority than the fixed speed limit sign; or, The speed indicated by the speed limit sign corresponding to the target speed limit value is the speed limit sign with the largest value among the speeds indicated by the multiple detected speed limit signs.

10. The method according to claim 1, characterized in that, The target speed limit value meets the following conditions: The target speed limit is less than the speed threshold, which is the speed value obtained by subtracting a preset value from the map speed limit.

11. The method according to claim 1, characterized in that, The displayed target speed limit value includes at least one of the following: The target speed limit value is displayed on the dashboard of the target vehicle; The target speed limit value is displayed on the central control screen of the target vehicle; The target speed limit value is displayed in the head-up display area of ​​the target vehicle; The target speed limit value is displayed in the rearview mirror of the target vehicle; The target speed limit is displayed on the side window of the target vehicle; or, The target speed limit is displayed on the door control screen of the target vehicle.

12. The method according to claim 1, characterized in that, The method further includes: The target speed limit is announced via voice broadcast.

13. The method according to claim 1, characterized in that, The method further includes: Control the speed of the target vehicle to be less than or equal to the target speed limit.

14. The method according to claim 1, characterized in that, The method further includes: If it is predicted that the target vehicle will continue to travel on the first road, the target speed limit will not be displayed.

15. The method according to claim 1, characterized in that, The method further includes: If it is predicted that the target vehicle will continue to travel on the first road, and the distance between the target vehicle and the first speed limit sign is detected to be less than a preset distance, wherein the speed indicated by the first speed limit sign is within a preset speed range, and the preset speed range is determined based on the map speed limit value; The speed indicated by the first speed limit sign is displayed.

16. An electronic device, characterized in that, It includes a processor and a memory, the memory being used to store program instructions, and the processor being used to invoke the program instructions to perform the method of any one of claims 1 to 15.

17. A vehicle, characterized in that, It includes a processor and a memory, the memory being used to store program instructions, and the processor being used to invoke the program instructions to perform the method of any one of claims 1 to 15.

18. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed, implement the method of any one of claims 1 to 15.

19. A computer program product, characterized in that, The computer program product includes instructions that, when executed, implement the method of any one of claims 1 to 15.

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