A car-following safety prompting method, device, system and electronic equipment

Abstract

The embodiment of the application provides a car-following safety prompting method, device, system and electronic equipment, which comprises the following steps: obtaining driving data of a following vehicle in a preset distance range, wherein the driving data comprises following time data and speed data of the vehicle; judging whether a car-following safety prompt needs to be sent to the following vehicle based on the driving data of the following vehicle and driving data of a current vehicle; if it is determined that the car-following safety prompt needs to be sent to the following vehicle, generating a car-following prompt instruction; and performing corresponding display control on a car-following prompt screen of the current vehicle through the car-following prompt instruction. Through the above method, the driving data of the following vehicle and the driving data of the current vehicle are analyzed in real time, and the following vehicle is timely prompted with the car-following safety prompt according to the analysis result, so that the safety in the driving process of the vehicle is improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent vehicles, and more particularly to a method, device, system, electronic device, and storage medium for providing vehicle following safety alerts. Background Technology

[0002] With the development of vehicle technology, people are paying more and more attention to vehicle safety when driving on the road.

[0003] Because existing vehicle following warning systems generally require manual intervention from the driver based on the current driving conditions, current vehicle following safety warning technologies cannot combine the following vehicle's and the current vehicle's driving data to determine whether to issue a following safety warning. Summary of the Invention

[0004] This invention provides a method for providing vehicle following safety alerts, which addresses the problem that existing vehicle following safety alert technologies cannot combine the following vehicle's and the current vehicle's driving data to determine whether to provide a following safety alert.

[0005] In a first aspect, embodiments of the present invention provide a method for providing safety warnings when following another vehicle, the method comprising the following steps:

[0006] Acquire driving data of vehicles following within a preset distance range, including vehicle following time data and speed data;

[0007] Based on the driving data of the following vehicle and the driving data of the current vehicle, determine whether it is necessary to send a following safety reminder to the following vehicle.

[0008] If it is determined that a following safety reminder needs to be sent to the following vehicle, a following reminder instruction is generated;

[0009] The following vehicle prompt command is used to perform corresponding display control on the following vehicle prompt screen of the current vehicle.

[0010] Optionally, before acquiring the driving data of vehicles following within a preset distance range, wherein the driving data includes vehicle time data and speed data, the method further includes:

[0011] The system obtains the number of lanes and traffic flow data of the road where the vehicle is currently located. The traffic flow data is determined by the distance between two vehicles within a preset range.

[0012] Based on the number of lanes and traffic flow data, calculate the safe distance between the two vehicles;

[0013] Centered on the current vehicle, the preset distance range is set according to the safe distance.

[0014] Optionally, determining whether to send a following safety alert to the following vehicle based on the driving data of the vehicle following and the current vehicle's driving data includes:

[0015] By using a preset driving algorithm, the speed data of the following vehicle and the speed data of the current vehicle are calculated to obtain the time required for the following vehicle and the current vehicle to reach the minimum preset distance range.

[0016] Based on the time required to reach the minimum preset distance range, determine whether it is necessary to send a following safety reminder to the following vehicle.

[0017] Optionally, determining whether to send a following safety alert to the following vehicle based on the driving data of the vehicle following and the current vehicle's driving data further includes:

[0018] Based on the driving data of the following vehicle, the first predicted driving trajectory of the following vehicle is determined;

[0019] Based on the current vehicle's driving data, determine the current vehicle's second predicted driving trajectory;

[0020] Based at least on the first and second predicted driving trajectories, determine whether it is necessary to send a following safety warning to the following vehicle.

[0021] Optionally, if it is determined whether a following safety reminder needs to be sent to the following vehicle, then generating a following reminder instruction includes:

[0022] Within a preset time series, determine the speed differences between the following vehicle and the current vehicle.

[0023] The risk level of following another vehicle is determined based on the numerical values ​​and frequency of occurrence of the different speeds.

[0024] Based on the risk level of the vehicle being followed, a corresponding following prompt instruction is generated.

[0025] Optionally, the step of performing corresponding display control on the following vehicle's following indicator screen via the following vehicle prompt command includes:

[0026] Based on the following vehicle prompt instruction, corresponding prompt content is generated, including text prompts and / or light prompts;

[0027] The control panel displays the prompts so that the following vehicle can be alerted.

[0028] Secondly, embodiments of the present invention also provide a vehicle following safety warning device, the vehicle following safety warning device comprising:

[0029] The acquisition module is used to acquire driving data of vehicles following within a preset distance range. The driving data includes vehicle following time data and speed data.

[0030] The determination module is used to determine whether the following vehicle needs to provide a following safety warning based on the driving data of the following vehicle and the driving data of the current vehicle.

[0031] The generation module is used to generate a following safety prompt instruction if it is determined that the vehicle being followed needs to provide a following safety prompt.

[0032] The control module is used to control the following prompt screen of the current vehicle through the following prompt command, so that the following vehicle can be prompted.

[0033] Thirdly, embodiments of the present invention also provide a vehicle following safety warning system, which includes: a vehicle following safety warning device, a server, and a following warning screen.

[0034] Fourthly, embodiments of the present invention provide an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps in the vehicle following safety warning method provided in embodiments of the present invention.

[0035] Fifthly, embodiments of the present invention provide a computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, it implements the steps in the vehicle following safety warning method provided in the embodiments of the present invention.

[0036] In this embodiment of the invention, driving data of following vehicles within a preset distance range is acquired. This driving data includes following time data and speed data. Based on the driving data of the following vehicles and the current vehicle's driving data, it is determined whether the following vehicles require a safety warning. If it is determined that a safety warning is required, a following warning command is generated. The following warning command is used to control the following warning screen of the current vehicle, enabling the following vehicle to be warned. By performing real-time analysis of the driving data of the following vehicles and the current vehicle, and providing timely safety warnings to the following vehicles based on the analysis results, the safety of vehicles during driving is improved. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is an architecture diagram of a vehicle following safety warning system provided in an embodiment of the present invention;

[0039] Figure 2 This is a flowchart of a vehicle following safety warning method provided by an embodiment of the present invention;

[0040] Figure 3 yes Figure 2 Detailed flowchart before step 201;

[0041] Figure 4 yes Figure 2 The detailed flowchart of step 202;

[0042] Figure 5 yes Figure 2 Another specific flowchart for step 202;

[0043] Figure 6 yes Figure 2 The detailed flowchart of step 203;

[0044] Figure 7 yes Figure 2 The detailed flowchart of step 204;

[0045] Figure 8 This is a schematic diagram of the structure of a car following safety warning device provided in an embodiment of the present invention;

[0046] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] like Figure 1 As shown, Figure 1This is an architecture diagram of a vehicle following safety warning system 100 provided in an embodiment of the present invention. The vehicle following safety warning system includes: a vehicle following safety warning device 800, a server 101, and a following warning screen 102. The vehicle following safety warning device 800 further includes an acquisition module for acquiring driving data of vehicles following within a preset distance range; a determination module for determining whether the following vehicles need a following safety warning based on the driving data of the following vehicles and the current vehicle's driving data; a generation module for generating a following warning command if it is determined that the following vehicles need a following safety warning; and a control module for controlling the following warning screen of the current vehicle via the following warning command, so that the following vehicles can be warned.

[0049] Specifically, the aforementioned preset distance range refers to the safe distance between the current vehicle and the following vehicle. Maintaining a safe distance between them ensures a relatively safe relationship. More specifically, this preset distance range can also be determined based on the current driving environment, such as by analyzing data on the number of lanes and traffic flow on the road.

[0050] In one possible embodiment, the aforementioned vehicle following safety warning system calculates the number of lanes and traffic flow data currently in which the vehicle is traveling, thereby adjusting the preset distance range in real time. Generally speaking, fewer lanes indicate a narrower road, potentially leading to vehicles following more closely together. Furthermore, higher and faster-changing traffic flow data indicates more rapid changes in the data of the following vehicle, increasing the likelihood of a safety accident. Therefore, the number of lanes and traffic flow data have a significant impact on the adjustment of the preset distance range.

[0051] The aforementioned driving data may include, but is not limited to, vehicle following time data and speed data. Specifically, the vehicle following time data refers to the time the following vehicle remains within the preset distance range. Generally, if a following vehicle remains within the preset distance range and then moves away from it within a short period, it indicates that the following vehicle is merely changing lanes or temporarily following, and the likelihood of a following safety accident is low. Therefore, a following safety warning may not be necessary for this vehicle. If a following vehicle remains within the preset distance range for an extended period, it indicates that the following vehicle is continuously following the current vehicle. In this case, prolonged following can easily lead to a following safety accident, and therefore, a following safety warning and monitoring may be required. It is understandable that the time a following vehicle remains within the preset distance range can be adjusted in real time based on the number of lanes and traffic flow data. Since fewer lanes and higher traffic flow data increase the likelihood of following situations, the time a following vehicle remains within the preset distance range can be adjusted based on the number of lanes and traffic flow data.

[0052] The aforementioned speed data may include, but is not limited to, the average speed data, instantaneous speed data, and acceleration data of the current vehicle and the following vehicles. Specifically, the average speed data can be calculated by averaging the speeds over the period from the moment the current vehicle detects the following vehicle until the moment the following vehicle leaves the following vehicle. The instantaneous speed data can be calculated based on the speed of the current vehicle starting from the moment it detects the following vehicle. The acceleration can refer to the magnitude of the speed change of the current vehicle from the moment it detects the following vehicle until the following vehicle leaves the following vehicle; the greater the acceleration, the faster the vehicle speed changes.

[0053] The aforementioned following safety warning may include, but is not limited to, text or light warnings for the following vehicle. In another possible embodiment, the vehicle following safety warning system analyzes the driving data of the current vehicle and the following vehicle to determine if the following vehicle may be involved in a following safety accident. In this case, the following warning screen is controlled to provide text or light warnings to the following vehicle. Alternatively, text and light warnings may be used in combination. It is understood that the combination of text and light warnings can be adjusted according to the level of danger of following safety. The more dangerous the situation, the higher the degree of combination and the more conspicuous the text and light warnings.

[0054] The aforementioned following safety warning instruction can be an instruction from the vehicle following safety warning system to assess the following safety of the following vehicle and determine the level of warning to the following vehicle based on the assessment results. This instruction is used to control the following safety warning screen to provide warnings to the following vehicle.

[0055] The aforementioned following vehicle warning screen can provide necessary reminders to the driver of the vehicle following it in the form of text or lights. Specifically, it can display vehicle speed, text warnings, environmental prompts, flashing lights, etc., on the screen to remind the following vehicle. The content of the reminders can be set according to the specific implementation plan, and can be modified and viewed via smart mobile devices.

[0056] In one possible embodiment, the above-mentioned vehicle following safety warning system acquires and calculates the driving data of the current vehicle and the following vehicle through auxiliary radar and sensors. Based on the calculation results, it determines whether the following vehicle is in a dangerous following state with the current vehicle. If so, it provides a following warning of the corresponding danger level to the following vehicle according to the degree or level of dangerous following.

[0057] like Figure 2 As shown, Figure 2 This is a flowchart of a vehicle following safety warning method provided by an embodiment of the present invention. The vehicle following safety warning method includes the following steps:

[0058] 201. Obtain driving data of vehicles following within a preset distance range.

[0059] In this embodiment of the invention, the above-mentioned vehicle following safety warning method can be applied to vehicle following safety warning. The above-mentioned vehicle following safety warning has functions such as CNC module processing, CNC module signal transmission and reception, and CNC module memory storage, and can be built based on a server or server cluster. The server or server cluster can be an electronic device with work order data processing capability.

[0060] The aforementioned preset distance range refers to the safe distance between the current vehicle and the following vehicle. Maintaining a safe distance between them ensures a relatively safe relationship. More specifically, this preset distance range can be determined based on the current driving environment, such as by analyzing data on the number of lanes and traffic flow on the road.

[0061] The aforementioned driving data may include, but is not limited to, vehicle following time data and speed data. Specifically, the vehicle following time data refers to the time the following vehicle remains within the preset distance range. Generally, when a following vehicle is within the preset distance range and briefly moves out of it, it indicates that the following vehicle is merely changing lanes or temporarily following, and the likelihood of a following safety accident is low; therefore, a following safety warning may not be issued. When a following vehicle remains within the preset distance range for an extended period, it indicates that the following vehicle is continuously following the current vehicle. Prolonged following in this state increases the risk of following safety accidents, thus requiring a following safety warning and monitoring. It is understandable that the time a following vehicle remains within the preset distance range can be adjusted in real-time based on the number of lanes and traffic flow data. Fewer lanes and higher traffic flow data increase the likelihood of following situations; therefore, the time a following vehicle remains within the preset distance range can be adjusted based on the number of lanes and traffic flow data.

[0062] The aforementioned speed data may include, but is not limited to, the average speed data, instantaneous speed data, and acceleration data of the current vehicle and the following vehicles. Specifically, the average speed data can be calculated by averaging the speeds over the period from the moment the current vehicle detects the following vehicle until the moment the following vehicle leaves the following vehicle. The instantaneous speed data can be calculated based on the speed of the current vehicle starting from the moment it detects the following vehicle. The acceleration can refer to the magnitude of the speed change of the current vehicle from the moment it detects the following vehicle until the following vehicle leaves the following vehicle; the greater the acceleration, the faster the vehicle speed changes.

[0063] It should be noted that the aforementioned driving data can be collected by smart vehicles equipped with the aforementioned vehicle following safety warning system, through the vehicle's auxiliary electronic devices, such as cameras and laser sensors, which are capable of collecting and recognizing their own vehicle data, and inferring the driving data of the following vehicle based on the current vehicle's driving data.

[0064] 202. Based on the driving data of the following vehicle and the current vehicle's driving data, determine whether it is necessary to send a following safety reminder to the following vehicle.

[0065] In this embodiment of the invention, the aforementioned following safety warning may include, but is not limited to, providing text or light warnings to the following vehicle. In another possible embodiment, the aforementioned vehicle following safety warning system analyzes the driving data of the current vehicle and the following vehicle to determine that the following vehicle may cause a following safety accident. Then, it controls the following warning screen to provide text or light warnings to the following vehicle. Alternatively, text and light warnings may be used in combination. It is understood that the combination of text and light warnings can be adjusted according to the danger level of following safety. The more dangerous the situation, the higher the degree of combination of text and light warnings, and the more eye-catching they are.

[0066] In one possible embodiment, the above-mentioned vehicle following safety warning system analyzes the driving data of the following vehicle and the driving data of the current vehicle, and then determines whether it is necessary to send a following safety warning to the following vehicle.

[0067] 203. If it is determined that a following safety reminder needs to be sent to the following vehicle, a following reminder instruction is generated.

[0068] The aforementioned following safety warning may include, but is not limited to, text or light warnings for the following vehicle. In another possible embodiment, the vehicle following safety warning system analyzes the driving data of the current vehicle and the following vehicle to determine if the following vehicle may be involved in a following safety accident. In this case, the following warning screen is controlled to provide text or light warnings to the following vehicle. Alternatively, text and light warnings may be used in combination. It is understood that the combination of text and light warnings can be adjusted according to the level of danger of following safety. The more dangerous the situation, the higher the degree of combination and the more conspicuous the text and light warnings.

[0069] The aforementioned generation operation can refer to the process by which the vehicle following safety warning system predicts the possible changes in the vehicle's driving trajectory based on the current vehicle's driving data or driving data stored in the local database, and generates corresponding following safety warnings based on the prediction results.

[0070] 204. By using the following vehicle prompt command, perform corresponding display control on the following vehicle prompt screen of the current vehicle.

[0071] The aforementioned following safety warning instruction can be an instruction from the vehicle following safety warning system to assess the following safety of the following vehicle and determine the level of warning to the following vehicle based on the assessment results. This instruction is used to control the following safety warning screen to provide warnings to the following vehicle.

[0072] The aforementioned following vehicle warning screen can provide necessary reminders to the driver of the vehicle following it in the form of text or lights. Specifically, it can display vehicle speed, text warnings, environmental prompts, flashing lights, etc., on the screen to remind the following vehicle. The content of the reminders can be set according to the specific implementation plan, and can be modified and viewed via smart mobile devices.

[0073] In one possible embodiment, the above-mentioned vehicle following safety warning system acquires and calculates the driving data of the current vehicle and the following vehicle through auxiliary radar and sensors. Based on the calculation results, it determines whether the following vehicle is in a dangerous following state with the current vehicle. If so, it provides a following warning of the corresponding danger level to the following vehicle according to the degree or level of dangerous following.

[0074] In this embodiment of the invention, driving data of following vehicles within a preset distance range is acquired. This driving data includes following time data and speed data. Based on the driving data of the following vehicles and the current vehicle's driving data, it is determined whether the following vehicles require a safety warning. If it is determined that a safety warning is required, a following warning command is generated. The following warning command is used to control the following warning screen of the current vehicle, enabling the following vehicles to receive the warning. By performing real-time analysis of the driving data of the following vehicles and the current vehicle, and providing timely safety warnings based on the analysis results, the safety of vehicles during driving is improved.

[0075] Optional, such as Figure 3 As shown, before the step of obtaining the driving data of the following vehicles within the preset distance range in step 201, steps 2011-2013 are also included, wherein:

[0076] Obtain the number of lanes and traffic flow data of the road where the vehicle is currently located.

[0077] In this embodiment of the invention, the aforementioned traffic flow data can be determined by the distance between two vehicles within a preset range. Specifically, since a larger traffic flow data indicates a higher traffic density, the distance between vehicles is likely to be smaller. Therefore, the traffic flow data can be calculated using the distance between two vehicles within a preset range. The preset range can be determined based on the number of lanes. The fewer the lanes, the higher the traffic flow and density are likely to be; therefore, the preset range can be set relatively smaller. When the distance between two vehicles is too close within the preset range, it indicates a higher possibility of collisions or rear-end accidents. Therefore, traffic flow data has a certain impact on the setting of the safe distance between two vehicles.

[0078] 2012. Calculate the safe distance between two vehicles based on the number of lanes and traffic flow data.

[0079] In this embodiment, the aforementioned traffic flow data can be obtained using the following formula:

[0080] C

[0081] Where C represents traffic flow data, N represents the parameter corresponding to the real-time number of vehicles, which can be based on 0.2 as the base, and increased by 0.2 for every two additional vehicles near the rear of the current vehicle. The specific base and increment settings can be determined according to the specific implementation plan. X represents the vehicle congestion level, which can be divided into congested and non-congested, corresponding to a congestion parameter of 0.5 and a non-congested parameter of 1, respectively. The specific congestion and non-congestion parameters can be set according to the specific implementation plan. It should be noted that the congestion parameter should be less than the non-congestion parameter. T represents the number of lanes parameter, which can be set separately for three-lane, four-lane, and five-lane configurations, specifically 0.3, 0.4, and 0.5, respectively. The specific lane parameters can be adjusted according to the specific implementation plan. According to the formula, the more vehicles there are, the higher the vehicle congestion level, and the more lanes there are, the larger the traffic flow data.

[0082] Since the number of lanes has a certain impact on traffic flow data—for example, if the number of lanes is small but the number of vehicles remains the same, the traffic flow data will increase—the above-mentioned safe distance can be obtained from the following formula:

[0083] Q

[0084] Where Q represents the safety distance, T represents the number of lanes, C represents the traffic flow data, and U represents the standard safe sector distance for vehicles, which is generally 1 to 2 square meters, but can be adjusted according to the specific implementation plan. As the formula shows, the more lanes and the greater the traffic flow, the larger the required safety distance becomes.

[0085] 2013. Set a preset distance range based on the current vehicle and the safe distance.

[0086] In one possible embodiment, the above-mentioned vehicle following safety warning system calculates a safe distance based on the traffic flow data and the number of lanes, and forms a circle with the safe distance as the radius and the current vehicle as the center point, and focuses on providing following safety warnings within the preset distance range behind the vehicle.

[0087] Optional, such as Figure 4 As shown, step 202, which determines whether to send a following safety warning to the following vehicle based on the driving data of the vehicle following and the driving data of the current vehicle, also includes steps 2021-2022, wherein:

[0088] 2021. By using a preset driving algorithm, the speed data of the following vehicle and the current vehicle are calculated to obtain the time required for the following vehicle and the current vehicle to reach the minimum preset distance range.

[0089] In this embodiment of the invention, a preset driving algorithm can be used to calculate the speed data of the current vehicle and the following vehicle obtained by the vehicle following safety system, thereby determining the time required for the following vehicle to reach the minimum preset distance range from the current vehicle. Specifically, by acquiring and calculating the speed of the following vehicle, the speed of the current vehicle, and the distance between the two vehicles, the shortest time that may result in a dangerous following accident between the two vehicles can be determined.

[0090] More specifically, the shortest time mentioned above can be calculated using the Time to Arrive (TTC) formula, where:

[0091] TTC

[0092] TTC is the shortest possible time for a dangerous following accident to occur between two vehicles. L is the distance between the two vehicles, which can be obtained by detecting the front of the following vehicle using auxiliary radar and sensors. L1 is the relative speed, which is the speed of the following vehicle minus the speed of the current vehicle. If the two vehicles are traveling at the same speed, the relative speed is zero, meaning the distance will not change. Using the above formula, the shortest time required for a collision can be calculated based on the relationship between the distance and the relative speed.

[0093] 2022. Based on the time required to reach the minimum preset distance range, determine whether it is necessary to send a following safety reminder to the following vehicle.

[0094] In one possible embodiment, the above-mentioned vehicle following safety warning system analyzes and calculates a preset distance range, the relative speed between the two vehicles, and the shortest time that a dangerous following accident may occur between the two vehicles to determine whether the following vehicle is likely to cause a dangerous following accident with the current vehicle, and then sends a following safety warning to the following vehicle that may cause a dangerous following accident.

[0095] Optional, such as Figure 5 As shown, step 202, which determines whether to send a following safety warning to the following vehicle based on the driving data of the vehicle following and the driving data of the current vehicle, also includes steps 2023-2025, wherein:

[0096] 2023. Based on the driving data of the following vehicle, determine the first predicted driving trajectory of the following vehicle.

[0097] In this embodiment of the invention, the first predicted driving trajectory of the following vehicle can refer to predicting the driving operation that the following vehicle will perform based on the driving data of the following vehicle, and predicting the driving trajectory of the following vehicle based on a series of predicted driving operations.

[0098] 2024. Based on the current vehicle's driving data, determine the second predicted driving trajectory of the current vehicle.

[0099] The aforementioned second predicted driving trajectory of the current vehicle may refer to the current vehicle's route obtained by the vehicle following safety warning system through the auxiliary data acquisition electronic equipment that collects the current vehicle's driving data and calculates the driving data.

[0100] Specifically, the vehicle's status can be roughly determined by its current speed data and speed change data, thereby determining the vehicle's trajectory. For example, if a decrease in vehicle speed is detected, it is determined that the vehicle is decelerating; or if a drastic change in vehicle speed data is detected, it is determined that the vehicle may be performing a turning maneuver. Based on a series of data changes, the current trajectory of the vehicle can be determined.

[0101] 2025. Based at least on the first predicted driving trajectory and the second predicted driving trajectory, determine whether it is necessary to send a following safety warning to the following vehicle.

[0102] In one possible embodiment, safety is assessed within a preset distance range using the first and second predicted driving trajectories. Specifically, the vehicle following safety warning system calculates the closest distance between the first and second predicted driving trajectories at the same point in time and compares this distance with the preset distance range. If the distance is greater than or equal to the preset distance range, it is determined that a following safety warning does not need to be sent to the following vehicle; if the distance is less than the preset distance range, it is determined that a following safety warning needs to be sent to the following vehicle.

[0103] Optional, such as Figure 6 As shown, in step 203, if it is determined whether a following safety warning needs to be sent to the following vehicle, the step of generating a following warning instruction further includes steps 2031-2033, wherein:

[0104] In a preset time series, the speed difference between the following vehicle and the current vehicle is determined.

[0105] In this embodiment of the invention, the aforementioned preset time series can be set according to a preset distance range. Generally, the larger the preset distance range, the longer the preset time series can be. The aforementioned preset time series can be segmented according to the maximum shooting duration that the vehicle-mounted camera or sensor can capture, so that the speed data of the following vehicle obtained in the preset time series is more accurate.

[0106] The aforementioned speed differences refer to the relative speeds of the following vehicle and the current vehicle at the current moment; that is, the speed difference between the two vehicles at the current instant. Generally, when the relative speed is negative, it indicates that the following vehicle is traveling faster than the current vehicle, which could potentially lead to a dangerous following-car accident.

[0107] In one possible embodiment, the above-mentioned vehicle following safety warning system detects and calculates the speed of the following vehicle and the current vehicle in real time within the preset time sequence, determines the relative speed at each moment in the preset time sequence, and thus determines whether the distance between the following vehicle and the current vehicle is safe within the aforementioned relative speed.

[0108] 2032. Determine the risk level of following another vehicle based on the numerical values ​​and frequency of occurrence of different speeds.

[0109] In this embodiment of the invention, the values ​​of the aforementioned different speeds can be obtained by the vehicle following safety warning system through real-time detection and calculation of the speeds of the following vehicle and the current vehicle in the aforementioned preset time series. The frequency of occurrence of the aforementioned different speed values ​​can be determined by the vehicle following safety warning system through counting the number of times the same speed different values ​​occur in the preset time series, obtaining the value with the highest frequency and the value with the lowest frequency of the same speed different values, and determining the corresponding following risk level of the current vehicle and the following vehicle based on the preset following risk level and the values ​​with the highest and lowest frequencies of the same speed different values.

[0110] Understandably, the aforementioned following risk level can be set based on different road driving conditions and the numerical values ​​of the different speeds and their corresponding frequencies. Generally speaking, the larger the difference between the highest and lowest frequency of the same speed difference, the greater the relative speed change between the two vehicles, indicating a faster change in road driving conditions and a higher likelihood of a dangerous following accident. Therefore, the corresponding following risk level can be set higher.

[0111] 2033. Generate corresponding following prompt instructions based on the following risk level.

[0112] In this embodiment of the invention, the above-mentioned following vehicle warning instruction may be an instruction information in which the above-mentioned vehicle following vehicle safety warning system assesses the following vehicle's following safety and determines the degree of warning to the following vehicle based on the assessment results. This instruction information is used to control the following vehicle warning screen to provide warnings to the following vehicle.

[0113] In one possible embodiment, the above assessment results can be evaluated by the above-mentioned vehicle following safety warning system in a preset time series, assessing the values ​​of different speeds and their corresponding frequencies, determining the corresponding risk level, and generating corresponding following warning instructions based on the corresponding risk level.

[0114] Optional, such as Figure 7 As shown, step 204, which involves executing corresponding display control on the following vehicle's following vehicle prompt screen via the following vehicle prompt command, further includes steps 2041-2042, wherein:

[0115] Generate corresponding prompt content based on the following vehicle prompt instruction;

[0116] Control the display of the following vehicle alert screen to ensure that the following vehicle is alerted.

[0117] In this embodiment of the invention, the aforementioned prompts may include, but are not limited to, text prompts and / or light prompts. The aforementioned following vehicle prompt screen can provide feedback to the driver of the following vehicle in the form of text or light. Specifically, it can display vehicle speed, text warnings, environmental prompts, flashing lights, etc., on the display screen to prompt the following vehicle. The aforementioned prompts can be set according to specific implementation schemes and can be modified and viewed using smart mobile devices.

[0118] In one possible embodiment, the above-mentioned vehicle following safety warning system acquires and calculates the driving data of the current vehicle and the following vehicle through auxiliary radar and sensors. Based on the calculation results, it determines whether the following vehicle is in a dangerous following state with the current vehicle. If so, it provides a following warning of the corresponding danger level to the following vehicle according to the degree or level of dangerous following.

[0119] In another possible embodiment, the above-mentioned vehicle following safety warning system generates corresponding warning content based on the received following warning instruction, queries the corresponding text content or light content in the auxiliary database, and transmits it to the following warning screen to provide feedback to the following vehicle.

[0120] like Figure 8 As shown, this embodiment of the invention also provides a vehicle following safety warning device 800, which includes:

[0121] The acquisition module 801 is used to acquire driving data of vehicles following within a preset distance range. The driving data includes vehicle following time data and speed data.

[0122] The determining module 802 is used to determine whether the following vehicle needs to provide a following safety warning based on the driving data of the following vehicle and the driving data of the current vehicle.

[0123] The generation module 803 is used to generate a following safety prompt instruction if it is determined that the following vehicle needs to provide a following safety prompt.

[0124] The control module 804 is used to control the following prompt screen of the current vehicle through the following prompt command, so that the following vehicle can be prompted.

[0125] Optionally, the above-mentioned device further includes:

[0126] The judgment module is used to obtain the number of lanes and traffic flow data of the road where the current vehicle is located. The traffic flow data is judged by the distance between two vehicles within a preset range.

[0127] The calculation module is used to calculate the safe distance between two vehicles based on the number of lanes and traffic flow data;

[0128] The setting module is used to set the preset distance range based on the current vehicle and the safe distance.

[0129] Optionally, the determining module 802 mentioned above includes:

[0130] The first acquisition submodule is used to calculate the speed data of the following vehicle and the current vehicle using a preset driving algorithm, so as to obtain the time required for the following vehicle and the current vehicle to reach the minimum preset distance range.

[0131] The first judgment submodule is used to determine whether it is necessary to send a following safety reminder to the following vehicle based on the time required to reach the minimum preset distance range.

[0132] Optionally, the determining module 802 further includes:

[0133] The first determining submodule is used to determine the first predicted driving trajectory of the following vehicle based on the driving data of the following vehicle.

[0134] The second determining submodule is used to determine the second predicted driving trajectory of the current vehicle based on the current vehicle's driving data;

[0135] The second judgment submodule is used to determine, based at least on the first predicted driving trajectory and the second predicted driving trajectory, whether it is necessary to send a following safety reminder to the following vehicle.

[0136] Optionally, the above-mentioned generation module 803 includes:

[0137] The third determining submodule is used to determine the speed difference between the following vehicle and the current vehicle in a preset time series;

[0138] The fourth determination submodule is used to determine the following risk level based on the numerical values ​​and frequency of occurrence of the different speed values;

[0139] The first generation submodule is used to generate corresponding following prompt instructions based on the following risk level.

[0140] Optionally, the control module 804 mentioned above includes:

[0141] The second generation submodule is used to generate corresponding prompt content according to the following prompt instruction, the prompt content including text prompts and / or light prompts;

[0142] The prompt submodule is used to control the display of the prompt content on the following vehicle prompt screen so that the following vehicle can be prompted.

[0143] like Figure 9 As shown, this embodiment of the invention also provides an electronic device 900, including a processor, which can execute any of the above-described vehicle following safety warning methods.

[0144] Specifically, it includes a processor 901 and a memory 902, as well as a computer program stored in the memory 902 and capable of running on the processor 901 to execute the vehicle following safety warning method, wherein:

[0145] Processor 901 executes the calculator program for the car following safety warning method stored in memory 902, and performs the following steps:

[0146] Acquire driving data of vehicles following within a preset distance range, including vehicle following time data and speed data;

[0147] Based on the driving data of the following vehicle and the driving data of the current vehicle, determine whether it is necessary to send a following safety reminder to the following vehicle.

[0148] If it is determined that a following safety reminder needs to be sent to the following vehicle, a following reminder instruction is generated;

[0149] The following vehicle prompt command is used to perform corresponding display control on the following vehicle prompt screen of the current vehicle.

[0150] Optionally, before processor 901 executes the step of acquiring driving data of vehicles following within a preset distance range, wherein the driving data includes vehicle time data and speed data, the method further includes:

[0151] The system obtains the number of lanes and traffic flow data of the road where the vehicle is currently located. The traffic flow data is determined by the distance between two vehicles within a preset range.

[0152] Based on the number of lanes and traffic flow data, calculate the safe distance between the two vehicles;

[0153] Centered on the current vehicle, the preset distance range is set according to the safe distance.

[0154] Optionally, the processor 901 executes the step of determining whether to send a following safety warning to the following vehicle based on the driving data of the following vehicle and the current vehicle's driving data, including:

[0155] By using a preset driving algorithm, the speed data of the following vehicle and the speed data of the current vehicle are calculated to obtain the time required for the following vehicle and the current vehicle to reach the minimum preset distance range.

[0156] Based on the time required to reach the minimum preset distance range, determine whether it is necessary to send a following safety reminder to the following vehicle.

[0157] Optionally, the processor 901 further includes the following steps: determining whether to send a following safety warning to the following vehicle based on the driving data of the vehicle following and the current vehicle's driving data.

[0158] Based on the driving data of the following vehicle, the first predicted driving trajectory of the following vehicle is determined;

[0159] Based on the current vehicle's driving data, determine the current vehicle's second predicted driving trajectory;

[0160] Based at least on the first and second predicted driving trajectories, determine whether it is necessary to send a following safety warning to the following vehicle.

[0161] Optionally, the processor 901 executes the step of determining whether it is necessary to send a following safety warning to the following vehicle, and then generates a following warning instruction, including:

[0162] Within a preset time series, determine the speed differences between the following vehicle and the current vehicle.

[0163] The risk level of following another vehicle is determined based on the numerical values ​​and frequency of occurrence of the different speeds.

[0164] Based on the risk level of the vehicle being followed, a corresponding following prompt instruction is generated.

[0165] Optionally, the processor 901 further executes the following guidance instruction to perform corresponding display control on the following guidance screen of the current vehicle, including:

[0166] Based on the following vehicle prompt instruction, corresponding prompt content is generated, including text prompts and / or light prompts;

[0167] The control panel displays the prompts so that the following vehicle can be alerted.

[0168] This invention also provides a computer-readable storage medium storing a computer program. When executed by a processor, the computer program implements the various processes of the vehicle following safety warning method or the application-side vehicle following safety warning method provided in this invention, and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0169] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0170] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A method for providing safety warnings when following another vehicle, characterized in that, include: Acquire driving data of vehicles following within a preset distance range, including vehicle following time data and speed data; Based on the driving data of the following vehicle and the driving data of the current vehicle, determine whether it is necessary to send a following safety reminder to the following vehicle. If it is determined that a following safety reminder needs to be sent to the following vehicle, a following reminder instruction is generated; The following vehicle prompt command is used to perform corresponding display control on the following vehicle prompt screen of the current vehicle; Before acquiring the driving data of the following vehicles within a preset distance range, wherein the driving data includes the vehicle's time data and speed data, the method further includes: The system obtains the number of lanes and traffic flow data of the road where the vehicle is currently located. The traffic flow data is determined by the distance between two vehicles within a preset range. Based on the number of lanes and traffic flow data, calculate the safe distance between the two vehicles; Centered on the current vehicle, the preset distance range is set according to the safe distance; If it is determined that a following safety reminder needs to be sent to the following vehicle, a following reminder instruction is generated, including: Within a preset time series, determine the speed differences between the following vehicle and the current vehicle. The risk level of following another vehicle is determined based on the numerical values ​​and frequency of occurrence of the different speeds. Based on the risk level of the vehicle being followed, a corresponding following prompt instruction is generated.

2. The vehicle following safety warning method as described in claim 1, characterized in that, The step of determining whether to send a following safety alert to the following vehicle based on the driving data of the vehicle following it and the current vehicle's driving data includes: By using a preset driving algorithm, the speed data of the following vehicle and the speed data of the current vehicle are calculated to obtain the time required for the following vehicle and the current vehicle to reach the minimum preset distance range. Based on the time required to reach the minimum preset distance range, determine whether it is necessary to send a following safety reminder to the following vehicle.

3. The vehicle following safety warning method as described in claim 1, characterized in that, The step of determining whether to send a following safety alert to the following vehicle based on the driving data of the vehicle following it and the driving data of the current vehicle also includes: Based on the driving data of the following vehicle, the first predicted driving trajectory of the following vehicle is determined; Based on the current vehicle's driving data, determine the current vehicle's second predicted driving trajectory; Based at least on the first and second predicted driving trajectories, determine whether it is necessary to send a following safety warning to the following vehicle.

4. The vehicle following safety warning method as described in claim 1, characterized in that, The step of executing corresponding display control on the following vehicle's following indicator screen via the following vehicle prompt command includes: Based on the following vehicle prompt instruction, corresponding prompt content is generated, including text prompts and / or light prompts; The control panel displays the prompts so that the following vehicle can be alerted.

5. A vehicle following safety warning device, characterized in that, include: The acquisition module is used to acquire driving data of vehicles following within a preset distance range. The driving data includes vehicle following time data and speed data. The determination module is used to determine whether the following vehicle needs to provide a following safety warning based on the driving data of the following vehicle and the driving data of the current vehicle. The generation module is used to generate a following safety prompt instruction if it is determined that the vehicle being followed needs to provide a following safety prompt. The control module is used to control the following prompt screen of the current vehicle through the following prompt command, so that the following vehicle can be prompted.

6. A vehicle following safety warning system, characterized in that, The vehicle following safety warning system includes: a vehicle following safety warning device; The vehicle following safety warning device is determined by a vehicle following safety warning method as shown in any one of claims 1-4.

7. An electronic device, characterized in that, include: The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the vehicle following safety warning method as described in any one of claims 1 to 4.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the vehicle following safety warning method as described in any one of claims 1 to 4.

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