A driving prompting method, device and equipment, and a storage medium

Abstract

The application discloses a driving prompting method, device and equipment and a storage medium, and belongs to the technical field of vehicle control. The method comprises the following steps: determining a target road section between a target vehicle and a target collection point; determining at least one candidate vehicle speed of the target vehicle from a current position to the target collection point according to a target road condition of the target road section, gravity acceleration of the target vehicle and a maximum safe braking distance; determining a target vehicle speed from the at least one candidate vehicle speed according to the candidate vehicle speed, a candidate gear corresponding to the candidate vehicle speed, vehicle information of the target vehicle, a slope of the target collection point and a road section length of the target road section, and determining a target gear corresponding to the target vehicle speed; and displaying the target vehicle speed and the target gear on a vehicle display terminal to prompt a driver. The application improves the economy and safety of vehicle driving.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and in particular to a driving prompt method, device, equipment, and storage medium. Background Technology

[0002] A driver's driving experience and habits have a significant impact on a vehicle's fuel consumption. To save fuel, the industry currently uses driving prompts to provide drivers with vehicle driving information, suggesting reasonable operation and standardized driving practices.

[0003] However, there are currently few methods to provide driving prompts based on road conditions and map information ahead of the vehicle. Without reference points, drivers have limited visibility and make inaccurate judgments about uphill and downhill slopes ahead. They can only correct their driving behavior when they pass by, which increases fuel consumption and driving risks. Summary of the Invention

[0004] This invention provides a driving prompt method, apparatus, device, and storage medium to improve the economy and safety of vehicle driving.

[0005] According to one aspect of the present invention, a driving prompting method is provided, the method comprising:

[0006] Determine the target road segment from the target vehicle's current location to the target data collection point;

[0007] Based on the target road conditions of the target road segment, the gravitational acceleration of the target vehicle, and the maximum safe braking distance, determine at least one candidate vehicle speed for the target vehicle to travel from its current location to the target data collection point.

[0008] Based on the candidate vehicle speed, the candidate gear corresponding to the candidate vehicle speed, the vehicle information of the target vehicle, the slope of the target collection point, and the length of the target road segment, determine the target vehicle speed from at least one candidate vehicle speed, and determine the target gear corresponding to the target vehicle speed.

[0009] The target speed and gear are displayed on the vehicle's display terminal to guide the driver.

[0010] According to another aspect of the present invention, a driving prompting device is provided, the device comprising:

[0011] The target road segment determination module is used to determine the target road segment between the target vehicle's current location and the target data collection point;

[0012] The candidate vehicle speed determination module is used to determine at least one candidate vehicle speed of the target vehicle from its current position to the target collection point based on the target road conditions of the target road segment, the gravitational acceleration of the target vehicle, and the maximum safe braking distance.

[0013] The target vehicle speed determination module is used to determine the target vehicle speed from at least one candidate vehicle speed based on the candidate vehicle speed, the candidate gear corresponding to the candidate vehicle speed, the vehicle information of the target vehicle, the slope of the target collection point, and the length of the target road segment, and to determine the target gear corresponding to the target vehicle speed.

[0014] The target information display module is used to display the target speed and target gear on the vehicle display terminal to prompt the driver.

[0015] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0016] At least one processor; and

[0017] A memory that is communicatively connected to at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor is able to perform the driving prompting method of any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the driving prompting method of any embodiment of the present invention.

[0020] The technical solution of this invention involves determining the target road segment from the current location of the target vehicle to the target collection point; determining at least one candidate speed for the target vehicle to travel from the current location to the target collection point based on the target road conditions of the target road segment, the gravitational acceleration of the target vehicle, and the maximum safe braking distance; determining the target speed from the at least one candidate speed based on the candidate speed, the candidate gear corresponding to the candidate speed, the vehicle information of the target vehicle, the slope of the target collection point, and the length of the target road segment, and determining the target gear corresponding to the target speed; and displaying the target speed and target gear on the vehicle display terminal to prompt the driver. The above technical solution determines at least one candidate speed for the target vehicle to travel from its current location to the target data collection point based on the target road conditions, the target vehicle's gravitational acceleration, and the maximum safe braking distance. This ensures that all candidate speeds are within a safe driving speed range, thereby guaranteeing the safety of the target vehicle traveling from its current location to the target data collection point at the candidate speeds. Simultaneously, determining the target speed from multiple candidate speeds aims to find the speed that minimizes the cost of the target vehicle traveling from its current location to the target data collection point, thus improving the economy and safety of vehicle operation.

[0021] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0023] Figure 1 This is a flowchart of a driving prompting method provided according to Embodiment 1 of the present invention;

[0024] Figure 2 This is a flowchart of a driving prompting method provided according to Embodiment 2 of the present invention;

[0025] Figure 3 This is a schematic diagram of a driving reminder device according to Embodiment 3 of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of an electronic device that implements the driving prompt method of this invention. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "target," "candidate," "first," and "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Furthermore, it should be noted that the collection, storage, use, processing, transmission, provision, and disclosure of target road conditions, vehicle information of target vehicles, and slope and traffic information of target collection points involved in the technical solution of this invention all comply with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0030] Example 1

[0031] Figure 1 This is a flowchart of a driving prompting method provided in Embodiment 1 of the present invention. This embodiment is applicable to situations where energy-saving driving prompts are given to vehicle drivers. The method can be executed by a driving prompting device, which can be implemented in hardware and / or software and can be configured in an electronic device. Figure 1 As shown, the method includes:

[0032] S101. Determine the target road segment between the target vehicle's current location and the target data collection point.

[0033] In this context, the target vehicle refers to a vehicle equipped with driving prompt service functionality. The current location refers to the current position of the target vehicle. The target data collection point refers to a data collection point located at a preset distance ahead of the current location. This preset distance can be pre-set according to actual business needs; for example, it could be 25 meters or 50 meters. This embodiment of the invention does not impose a specific limitation on this distance. It should be noted that the location of the target data collection point changes in real time as the current location of the target vehicle changes. The target road segment refers to the road segment between the current location and the location of the target data collection point.

[0034] Specifically, the road segment between the current location and the location of the target collection point can be used as the target road segment for the target vehicle to travel from the current location to the target collection point.

[0035] S102. Based on the target road conditions of the target road segment, the gravitational acceleration of the target vehicle, and the maximum safe braking distance, determine at least one candidate vehicle speed for the target vehicle to travel from its current location to the target data collection point.

[0036] The target road condition refers to the road surface condition of the target road segment; optionally, the target road condition can be one of the following: light snow, icy road, muddy road, or pothole road. The maximum safe braking distance refers to the maximum braking distance of a vehicle as specified by national standards. Braking distance refers to the distance a vehicle travels from a certain initial speed, starting when the driver suddenly applies the brake pedal, until the vehicle comes to a complete stop. It should be noted that the target road condition of the target road segment affects the maximum safe braking distance. For example, if the target road condition is light snow, the maximum safe braking distance is 17 meters; if the target road condition is icy, the maximum safe braking distance is 34 meters. The candidate vehicle speed refers to the possible speed at which the target vehicle travels from its current location to the target data collection point.

[0037] Specifically, the target road surface adhesion coefficient of the target road segment can be determined based on the target road conditions; the product of the target road surface adhesion coefficient and the gravitational acceleration of the target vehicle can be used as the maximum braking deceleration of the target vehicle from its current position to the target data collection point; the safe speed of the target vehicle from its current position to the target data collection point can be determined based on the maximum braking deceleration and the maximum safe braking distance; and at least one candidate speed of the target vehicle from its current position to the target data collection point can be determined based on the safe speed.

[0038] The target road surface adhesion coefficient refers to the magnitude of the road friction force experienced by the target vehicle's wheels when the target vehicle is traveling on the target road section. It should be noted that the road surface adhesion coefficient varies under different road conditions. Maximum braking deceleration refers to the maximum deceleration the target vehicle can achieve under emergency braking conditions. Safe speed refers to the speed at which the target vehicle can safely travel from its current location to the target data collection point.

[0039] More specifically, based on the target road conditions of the target road segment, the road surface adhesion coefficient corresponding to the target road condition is extracted from the correspondence table between road conditions and road surface adhesion coefficients, and used as the target road surface adhesion coefficient for the target road segment. The correspondence table between road conditions and road surface adhesion coefficients can be preset based on experience; this embodiment does not impose specific limitations on it. Then, the product of the target road surface adhesion coefficient and the gravitational acceleration of the target vehicle is used as the maximum braking deceleration of the target vehicle from its current position to the target data collection point, i.e.:

[0040] v=θ×g

[0041] Where v is the maximum braking deceleration, θ is the target road surface adhesion coefficient, and g is the gravitational acceleration of the target vehicle.

[0042] Then, based on the maximum braking deceleration and the maximum safe braking distance, the safe speed for the target vehicle to travel from its current position to the target data collection point is determined using the following formula:

[0043]

[0044] Among them, v lim For safe vehicle speed, L is the maximum safe braking distance, and v is the maximum braking deceleration.

[0045] Therefore, the minimum speed is used as the upper limit of the speed selection range, and the safe speed is used as the lower limit of the speed selection range; then, all possible speeds within the speed selection range are used as candidate speeds for the target vehicle to travel from its current location to the target data collection point, that is:

[0046] v min ≤V≤v lim

[0047] Among them, v min For the minimum vehicle speed, v lim V represents a candidate vehicle speed, indicating a safe speed. It should be noted that the minimum speed can be preset based on experience; this embodiment of the invention does not impose a specific limitation on it, but the minimum speed must be greater than 0 km / h.

[0048] Understandably, by determining the safe speed at which the target vehicle can travel from its current location to the target data collection point, and further determining at least one candidate speed based on the minimum speed and the safe speed, the range of candidate speeds is clarified, enabling the target vehicle to travel from its current location to the target data collection point at a safe speed, thereby improving the safety of vehicle driving.

[0049] S103. Based on the candidate vehicle speed, the candidate gear corresponding to the candidate vehicle speed, the vehicle information of the target vehicle, the slope of the target collection point, and the length of the target road segment, determine the target vehicle speed from at least one candidate vehicle speed, and determine the target gear corresponding to the target vehicle speed.

[0050] Here, "candidate gear" refers to the vehicle gear corresponding to a candidate speed. It should be noted that one candidate gear can correspond to multiple candidate speeds, but one candidate speed can only correspond to one candidate gear. Different candidate speeds can correspond to the same or different candidate gears. The target vehicle's information can include its current speed at its current location, as well as its gravity, mass, tire radius, transmission ratio, final drive ratio, tire rolling resistance, frontal area, drag coefficient, and mass conversion factor. "Target speed" refers to the speed actually indicated to the driver of the target vehicle; correspondingly, "target gear" refers to the gear actually indicated to the driver of the target vehicle.

[0051] Specifically, based on a vehicle speed prediction model, a target vehicle speed can be determined from at least one candidate speed according to candidate vehicle speeds, candidate gears corresponding to candidate vehicle speeds, vehicle information of the target vehicle, slope of the target data collection point, and length of the target road segment. Then, based on the target vehicle speed, the target gear corresponding to the target vehicle speed is extracted from a speed-gear correspondence table. The vehicle speed prediction model can be pre-set according to actual business needs; this embodiment of the invention does not impose specific limitations on it. The speed-gear correspondence table refers to a data table used to associate and store vehicle speeds and gears; optionally, the speed-gear correspondence table can be pre-set based on experience; this embodiment does not impose specific limitations on it.

[0052] S104. Display the target speed and target gear on the vehicle display terminal to prompt the driver.

[0053] Among them, the vehicle display terminal refers to the terminal used to display vehicle information of the target vehicle; optionally, the vehicle display terminal includes at least one of the following: vehicle head-up display, vehicle instrument panel and central control display screen.

[0054] For example, the target speed and gear can be displayed to the driver on the vehicle's head-up display to prompt the driver to drive the target vehicle from the current location to the target data collection point at the target speed and gear, thereby reducing vehicle energy consumption and improving the economy and safety of vehicle driving.

[0055] The technical solution of this invention involves determining the target road segment from the current location of the target vehicle to the target collection point; determining at least one candidate speed for the target vehicle to travel from the current location to the target collection point based on the target road conditions of the target road segment, the gravitational acceleration of the target vehicle, and the maximum safe braking distance; determining the target speed from the at least one candidate speed based on the candidate speed, the candidate gear corresponding to the candidate speed, the vehicle information of the target vehicle, the slope of the target collection point, and the length of the target road segment, and determining the target gear corresponding to the target speed; and displaying the target speed and target gear on the vehicle display terminal to prompt the driver. The above technical solution determines at least one candidate speed for the target vehicle to travel from its current location to the target data collection point based on the target road conditions, the target vehicle's gravitational acceleration, and the maximum safe braking distance. This ensures that all candidate speeds are within a safe driving speed range, thereby guaranteeing the safety of the target vehicle traveling from its current location to the target data collection point at the candidate speeds. Furthermore, determining the target speed from multiple candidate speeds aims to find the speed that minimizes the cost of the target vehicle traveling from its current location to the target data collection point, thus improving the vehicle's economic efficiency and safety.

[0056] Based on the above embodiments, as an optional embodiment of the present invention, it is also possible to: acquire slope information and traffic information at the target collection point; and display the target vehicle speed, target gear, slope information, and traffic information on the vehicle display terminal.

[0057] The slope information for the target data collection point includes the slope and length at that point. Traffic information includes traffic light information, traffic congestion information, and traffic accident information.

[0058] Specifically, map information at the target collection point can be obtained through the T-BOX (Telematics BOX) controller on the target vehicle; slope and traffic information at the target collection point can be extracted from the map information; and the target speed, target gear, slope and traffic information can be displayed on the vehicle display terminal. For example, the slope, slope length and traffic information at the target collection point, as well as the suggested target speed and target gear, can be displayed to the driver of the target vehicle on the vehicle display terminal.

[0059] Understandably, displaying target speed, target gear, gradient information, and traffic information on the vehicle display terminal can provide the driver of the target vehicle with real-time gradient and traffic information at the target data collection point ahead of the target vehicle, as well as the target speed and gear of the target vehicle as it travels from its current location to the target data collection point. This allows for real-time suggestions to the driver regarding acceleration, deceleration, braking, and coasting, compensating for the driver's lack of judgment about road conditions ahead. This helps the driver avoid danger, improves vehicle safety, and simultaneously reduces energy consumption, thus improving vehicle economy.

[0060] Example 2

[0061] Figure 2 This is a flowchart of a driving prompting method provided in Embodiment 2 of the present invention. Based on the above embodiments, this embodiment further optimizes the process of "determining the target vehicle speed from at least one candidate vehicle speed according to candidate vehicle speeds, candidate gears corresponding to the candidate vehicle speeds, vehicle information of the target vehicle, slope of the target data collection point, and length of the target road segment," providing an optional implementation scheme. It should be noted that parts not detailed in this embodiment can be referred to in the relevant descriptions of other embodiments.

[0062] like Figure 2 As shown, the method includes:

[0063] S201. Determine the target road segment between the target vehicle's current location and the target data collection point.

[0064] S202. Based on the target road conditions of the target road segment, the gravitational acceleration of the target vehicle, and the maximum safe braking distance, determine at least one candidate vehicle speed for the target vehicle to travel from its current location to the target data collection point.

[0065] S203. Based on the vehicle information of the target vehicle, the candidate vehicle speed, the slope of the target collection point, and the length of the target road segment, determine the transition time for the target vehicle to travel from its current location to the target collection point at the candidate vehicle speed, as well as the candidate vehicle torque corresponding to the candidate vehicle speed.

[0066] The transition time refers to the time it takes for the target vehicle to travel from its current location to the target data collection point at a candidate speed. It should be noted that each candidate speed corresponds to a different transition time, and different candidate speeds correspond to different transition times. The candidate vehicle torque refers to the torque of the vehicle at the corresponding candidate speed. It should be noted that each candidate speed corresponds to a different candidate vehicle torque, and different candidate speeds correspond to different candidate vehicle torques.

[0067] Specifically, the current speed and candidate speeds in the target vehicle's vehicle information can be summed to obtain the first speed corresponding to the candidate speed. The quotient between the first speed and the length of the target road segment is used as the transition time for the target vehicle to travel from its current location to the target data collection point at the candidate speed. More specifically, for each candidate speed, the current speed and the candidate speed are summed to obtain the first speed corresponding to that candidate speed, i.e.:

[0068] v1 = v0 + V

[0069] Where v1 is the first speed corresponding to the candidate vehicle speed, v0 is the current vehicle speed, and V is the candidate vehicle speed.

[0070] Furthermore, the quotient between the first speed and the length of the target road segment is taken as the transition time for the target vehicle to travel from its current location to the target data collection point at that candidate speed.

[0071]

[0072] Where Δt is the transition time, L is the length of the target road segment, and v1 is the first speed corresponding to the candidate vehicle speed.

[0073] Simultaneously, based on the vehicle torque determination model, the candidate vehicle torque corresponding to the candidate vehicle speed is determined according to the target vehicle information, candidate vehicle speed, and the length of the target road segment. The vehicle torque determination model can be pre-set according to actual business needs, and this embodiment of the invention does not impose specific limitations on it.

[0074] Optionally, the second speed corresponding to the candidate speed can be determined based on the current speed and candidate speed in the target vehicle's vehicle information; the vehicle acceleration of the target vehicle can be determined based on the second speed and the length of the target road segment; and the candidate vehicle torque corresponding to the candidate speed can be determined based on the target vehicle's vehicle information, candidate speed, vehicle acceleration, and the slope of the target collection point.

[0075] Specifically, for each candidate speed, based on the current speed of the target vehicle and the candidate speed in the vehicle information, the second speed corresponding to that candidate speed is determined using the following formula:

[0076] v2=V 2 -v0 2

[0077] Where v2 is the second speed corresponding to the candidate vehicle speed, v0 is the current speed of the target vehicle, and V is the candidate vehicle speed.

[0078] Then, based on the second speed and the length of the target road segment, the vehicle acceleration of the target vehicle is determined using the following formula:

[0079]

[0080] Where a is the vehicle acceleration of the target vehicle, L is the length of the target road segment, and v2 is the second speed corresponding to the candidate vehicle speed.

[0081] Furthermore, based on the candidate vehicle speed, vehicle acceleration, slope of the target data collection point, and the target vehicle's gravity, mass, tire radius, gearbox ratio, final drive ratio, tire rolling resistance, vehicle frontal area, air drag coefficient, and mass conversion coefficient, the candidate vehicle torque corresponding to the candidate vehicle speed is determined using the following formula:

[0082]

[0083] Where V is the candidate vehicle speed, a is the vehicle acceleration, G is the target vehicle's gravity, m is the target vehicle's mass, f is the target vehicle's tire rolling resistance, α is the slope of the target sampling point, and C... D Let A be the air resistance coefficient of the target vehicle, δ be the frontal area of ​​the target vehicle, and i be the mass conversion factor of the target vehicle. g Let i be the gearbox ratio of the target vehicle, i0 be the final drive ratio of the target vehicle, and r be the tire radius of the target vehicle.

[0084] Understandably, by determining the torque of each candidate vehicle corresponding to each candidate vehicle speed based on the vehicle information of the target vehicle and the slope of the target acquisition, the torque of each candidate vehicle can be determined more accurately.

[0085] S204. Based on the candidate vehicle speed, the candidate gear corresponding to the candidate vehicle speed, and the candidate vehicle torque, determine the candidate fuel consumption corresponding to the candidate vehicle speed.

[0086] The candidate fuel consumption refers to the amount of fuel consumed by the target vehicle traveling from its current location to the target data collection point at a candidate speed. It should be noted that each candidate speed corresponds to a different candidate fuel consumption, and different candidate speeds correspond to different candidate fuel consumption values.

[0087] Specifically, the engine speed corresponding to the candidate vehicle speed can be determined based on the candidate vehicle speed and the candidate gear corresponding to the candidate vehicle speed; and the fuel consumption corresponding to the candidate vehicle speed can be determined based on the engine speed and the torque of the candidate vehicle.

[0088] More specifically, the engine speed corresponding to a candidate vehicle speed can be found in the first correspondence table using the candidate vehicle speed and the corresponding candidate gear as indexes; the candidate fuel consumption corresponding to a candidate vehicle speed can be found in the second correspondence table using the vehicle engine speed and the candidate vehicle torque as indexes. The first correspondence table is a data table that associates and stores vehicle speed, gear, and engine speed. The second correspondence table is a data table that associates and stores vehicle engine speed, vehicle torque, and fuel consumption. Both the first and second correspondence tables can be preset based on experience, and this embodiment of the invention does not impose specific limitations on them.

[0089] Understandably, fuel consumption is an important indicator of whether a vehicle is economical to drive. Therefore, determining the candidate fuel consumption corresponding to the candidate vehicle speed can provide effective data support for subsequently determining the candidate driving cost of the candidate vehicle speed.

[0090] S205. Based on the target vehicle's current gear, candidate gear, transition time, and candidate fuel consumption, determine the candidate driving cost corresponding to the candidate speed.

[0091] Among them, candidate driving cost refers to the cost incurred by the target vehicle in traveling to the target data collection point at the candidate speed.

[0092] Specifically, the gear difference between the candidate gear and the target vehicle's current gear can be determined; the gear difference, transition time, and candidate fuel consumption are weighted and summed to obtain the candidate driving cost corresponding to the candidate speed. Here, the current gear refers to the target vehicle's gear at its current position.

[0093] More specifically, for each candidate speed, the gear difference between the candidate gear corresponding to that speed and the current gear of the target vehicle is determined, i.e.:

[0094] Δβ=β-β0

[0095] Where Δβ is the gear difference, β is the candidate gear corresponding to the candidate vehicle speed, and β0 is the current gear of the target vehicle.

[0096] Next, the gear difference, transition time, and candidate fuel consumption are weighted and summed to obtain the candidate driving cost corresponding to the candidate vehicle speed using the following formula:

[0097] COST(J) = P × m fuel +Q×Δt+R×Δβ

[0098] Where COST(J) is the candidate driving cost corresponding to the candidate vehicle speed, m fuel P represents the candidate fuel consumption corresponding to the candidate vehicle speed, where P is in meters. fuel The weighting coefficients are: Δt is the transition time corresponding to the candidate vehicle speed, Q is the weighting coefficient of Δt, Δβ is the gear difference between the candidate gear corresponding to the candidate vehicle speed and the current gear of the target vehicle, and R is the weighting coefficient of Δβ. It should be noted that P, Q, and R can all be preset according to actual business needs, and this embodiment of the invention does not impose specific limitations on them.

[0099] S206. Determine the target speed from at least one candidate speed based on the candidate driving cost corresponding to at least one candidate speed.

[0100] Specifically, the candidate driving cost with the smallest value is selected from the candidate driving costs corresponding to at least one candidate vehicle speed; the candidate vehicle speed corresponding to the smallest candidate driving cost is taken as the target vehicle speed.

[0101] S207. Determine the target gear corresponding to the target vehicle speed.

[0102] Specifically, the target gear is determined from the speed-gear correspondence table using the target vehicle speed as an index. The speed-gear correspondence table is a data table used to associate and store vehicle speed and gear; optionally, the speed-gear correspondence table can be preset based on experience, and this embodiment does not impose specific limitations on it.

[0103] S208. Display the target speed and target gear on the vehicle display terminal to prompt the driver.

[0104] The technical solution of this invention determines the transition time for the target vehicle to travel from its current location to the target collection point at a candidate speed, and the candidate vehicle torque corresponding to the candidate speed, based on the vehicle information of the target vehicle, candidate vehicle speeds, the slope of the target collection point, and the length of the target road segment. It also determines the candidate fuel consumption corresponding to the candidate speed based on the candidate speed, the candidate gear corresponding to the candidate speed, and the candidate vehicle torque. Furthermore, it determines the candidate driving cost corresponding to the candidate speed based on the target vehicle's current gear, candidate gear, transition time, and candidate fuel consumption. Finally, it determines the target speed from at least one candidate speed based on the candidate driving cost corresponding to at least one candidate speed. Finally, it determines the target gear corresponding to the target speed and displays the target speed and target gear on the vehicle display terminal to prompt the driver. The above technical solution comprehensively considers the vehicle information of the target vehicle, the slope information at the target collection point, and the impact of candidate vehicle speeds on economical driving. Based on the above influencing factors, it calculates the candidate driving cost corresponding to each candidate vehicle speed, and then determines the vehicle speed (i.e., the target vehicle speed) that consumes the least cost to travel from the current position to the target collection point from each candidate vehicle speed. This makes the determined target vehicle speed more scientific, reasonable, and accurate, thereby providing drivers with accurate driving suggestions, helping them avoid driving risks, reducing vehicle energy consumption, and thus improving the economy and safety of vehicle driving.

[0105] Example 3

[0106] Figure 3 This is a schematic diagram of a driving reminder device provided in Embodiment 3 of the present invention. This embodiment is applicable to situations where energy-saving driving reminders are given to vehicle drivers. The device can be implemented in hardware and / or software and can be configured in an electronic device. Figure 3 As shown, the device includes:

[0107] The target road segment determination module 301 is used to determine the target road segment between the target vehicle's current location and the target data collection point;

[0108] The candidate vehicle speed determination module 302 is used to determine at least one candidate vehicle speed of the target vehicle from its current position to the target collection point based on the target road conditions of the target road segment, the gravitational acceleration of the target vehicle, and the maximum safe braking distance.

[0109] The target vehicle speed determination module 303 is used to determine the target vehicle speed from at least one candidate vehicle speed based on the candidate vehicle speed, the candidate gear corresponding to the candidate vehicle speed, the vehicle information of the target vehicle, the slope of the target collection point, and the length of the target road segment, and to determine the target gear corresponding to the target vehicle speed.

[0110] The target information display module 304 is used to display the target speed and target gear on the vehicle display terminal to prompt the driver.

[0111] The technical solution of this invention involves determining the target road segment from the current location of the target vehicle to the target collection point; determining at least one candidate speed for the target vehicle to travel from the current location to the target collection point based on the target road conditions of the target road segment, the gravitational acceleration of the target vehicle, and the maximum safe braking distance; determining the target speed from the at least one candidate speed based on the candidate speed, the candidate gear corresponding to the candidate speed, the vehicle information of the target vehicle, the slope of the target collection point, and the length of the target road segment, and determining the target gear corresponding to the target speed; and displaying the target speed and target gear on the vehicle display terminal to prompt the driver. The above technical solution determines at least one candidate speed for the target vehicle to travel from its current location to the target data collection point based on the target road conditions, the target vehicle's gravitational acceleration, and the maximum safe braking distance. This ensures that all candidate speeds are within a safe driving speed range, thereby guaranteeing the safety of the target vehicle traveling from its current location to the target data collection point at the candidate speeds. Simultaneously, determining the target speed from multiple candidate speeds aims to find the speed that minimizes the cost of the target vehicle traveling from its current location to the target data collection point, thus improving the economy and safety of vehicle operation.

[0112] Optionally, the candidate vehicle speed determination module 302 is specifically used for:

[0113] Determine the target road surface adhesion coefficient for the target road segment based on the target road conditions.

[0114] The product of the target road surface adhesion coefficient and the gravitational acceleration of the target vehicle is taken as the maximum braking deceleration of the target vehicle from its current position to the target data collection point.

[0115] Based on the maximum braking deceleration and the maximum safe braking distance, determine the safe speed at which the target vehicle can travel from its current location to the target data collection point;

[0116] Based on the safe speed, determine at least one candidate speed for the target vehicle to travel from its current location to the target data collection point.

[0117] Optionally, the target vehicle speed determination module 303 includes:

[0118] The transition time and candidate vehicle torque determination unit is used to determine the transition time of the target vehicle traveling from its current position to the target collection point at the candidate speed, and the candidate vehicle torque corresponding to the candidate speed, based on the vehicle information of the target vehicle, the candidate vehicle speed, the slope of the target collection point, and the length of the target road segment.

[0119] The candidate fuel consumption determination unit is used to determine the candidate fuel consumption corresponding to the candidate vehicle speed based on the candidate vehicle speed, the candidate gear corresponding to the candidate vehicle speed, and the candidate vehicle torque.

[0120] The candidate driving cost determination unit is used to determine the candidate driving cost corresponding to the candidate vehicle speed based on the target vehicle's current gear, candidate gear, transition time, and candidate fuel consumption.

[0121] The target vehicle speed determination unit is used to determine the target vehicle speed from at least one candidate vehicle speed based on the candidate driving cost corresponding to at least one candidate vehicle speed.

[0122] Optionally, the transition time and candidate vehicle torque determination unit includes a transition time determination subunit, which is specifically used for:

[0123] The current speed and candidate speed in the vehicle information of the target vehicle are added together to obtain the first speed corresponding to the candidate speed.

[0124] The quotient between the first speed and the length of the target road segment is used as the transition time for the target vehicle to travel from its current location to the target data collection point at the candidate speed.

[0125] Optionally, the transition time and candidate vehicle torque determination unit includes a candidate vehicle torque determination subunit, which is specifically used for:

[0126] Based on the current speed and candidate speed in the vehicle information of the target vehicle, determine the second speed corresponding to the candidate speed;

[0127] Determine the vehicle acceleration of the target vehicle based on the second speed and the length of the target road segment;

[0128] Based on the target vehicle's information, candidate vehicle speeds, vehicle acceleration, and the slope of the target data collection point, determine the candidate vehicle torque corresponding to the candidate vehicle speed.

[0129] Optionally, the candidate fuel consumption determination unit is specifically used for:

[0130] Based on the candidate vehicle speed and the candidate gear corresponding to the candidate vehicle speed, determine the vehicle engine speed corresponding to the candidate vehicle speed;

[0131] Based on the vehicle's engine speed and the candidate vehicle's torque, determine the candidate fuel consumption corresponding to the candidate vehicle speed.

[0132] Optionally, the candidate driving cost determination unit is specifically used for:

[0133] Determine the gear difference between the candidate gear and the target vehicle's current gear;

[0134] The candidate driving cost corresponding to the candidate vehicle speed is obtained by weighted summation of gear difference, transition time, and candidate fuel consumption.

[0135] Optionally, the device may also include:

[0136] The information acquisition module is used to acquire slope and traffic information at the target collection point;

[0137] The information display module is used to display target speed, target gear, gradient information, and traffic information on the vehicle display terminal.

[0138] Optionally, the vehicle display terminal includes at least one of a vehicle head-up display, a vehicle instrument panel, and a central control display.

[0139] The driving prompting device provided in the embodiments of the present invention can execute the driving prompting method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing each driving prompting method.

[0140] Example 4

[0141] Figure 4 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0142] like Figure 4 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0143] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0144] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as driving prompt methods.

[0145] In some embodiments, the driving prompting method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the driving prompting method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the driving prompting method by any other suitable means (e.g., by means of firmware).

[0146] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0147] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0148] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0149] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0150] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0151] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0152] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0153] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A driving prompting method, characterized in that, include: Determine the target road segment from the target vehicle's current location to the target data collection point; Based on the target road conditions of the target road segment, the gravitational acceleration of the target vehicle, and the maximum safe braking distance, determine at least one candidate vehicle speed for the target vehicle to travel from its current location to the target data collection point; Based on the candidate vehicle speed, the candidate gear corresponding to the candidate vehicle speed, the vehicle information of the target vehicle, the slope of the target collection point, and the length of the target road segment, the target vehicle speed is determined from the at least one candidate vehicle speed, and the target gear corresponding to the target vehicle speed is determined. The target speed and target gear are displayed on the vehicle display terminal to alert the driver; The process of determining the target vehicle speed from at least one candidate vehicle speed, based on the candidate vehicle speed, the candidate gear corresponding to the candidate vehicle speed, the vehicle information of the target vehicle, the slope of the target data collection point, and the length of the target road segment, includes: The current vehicle speed in the vehicle information of the target vehicle and the candidate vehicle speed are added together to obtain the first speed corresponding to the candidate vehicle speed; The quotient between the first speed and the length of the target road segment is taken as the transition time for the target vehicle to travel from its current location to the target collection point at the candidate speed. Based on the current vehicle speed and the candidate vehicle speed, determine the second speed corresponding to the candidate vehicle speed; The vehicle acceleration of the target vehicle is determined based on the second speed and the length of the target road segment; Based on the vehicle information of the target vehicle, the candidate vehicle speed, the vehicle acceleration, and the slope of the target collection point, determine the candidate vehicle torque corresponding to the candidate vehicle speed; Based on the candidate vehicle speed and the candidate gear corresponding to the candidate vehicle speed, determine the vehicle engine speed corresponding to the candidate vehicle speed; Based on the vehicle engine speed and the candidate vehicle torque, determine the candidate fuel consumption corresponding to the candidate vehicle speed; Determine the gear difference between the candidate gear and the current gear of the target vehicle; The candidate driving cost corresponding to the candidate vehicle speed is obtained by weighted summation of the gear difference, the transition time, and the candidate fuel consumption. The target speed is determined from the at least one candidate vehicle speed based on the candidate driving cost corresponding to the at least one candidate vehicle speed.

2. The method according to claim 1, characterized in that, The step of determining at least one candidate vehicle speed for the target vehicle to travel from its current location to the target data collection point based on the target road conditions of the target road segment, the gravitational acceleration of the target vehicle, and the maximum safe braking distance includes: Based on the target road conditions of the target road segment, determine the target road surface adhesion coefficient of the target road segment; The product of the target road surface adhesion coefficient and the gravitational acceleration of the target vehicle is taken as the maximum braking deceleration of the target vehicle from its current position to the target collection point. Based on the maximum braking deceleration and the maximum safe braking distance, determine the safe speed at which the target vehicle travels from its current position to the target data collection point; Based on the safe vehicle speed, determine at least one candidate vehicle speed at which the target vehicle travels from its current location to the target data collection point.

3. The method according to claim 1, characterized in that, The method includes: Obtain slope and traffic information at the target collection point; The vehicle display terminal displays the target speed, the target gear, the gradient information, and traffic information.

4. The method according to claim 3, characterized in that, The vehicle display terminal includes at least one of a vehicle head-up display, a vehicle instrument panel, and a central control display screen.

5. A driving prompting device, characterized in that, include: The target road segment determination module is used to determine the target road segment between the target vehicle's current location and the target data collection point; The candidate vehicle speed determination module is used to determine at least one candidate vehicle speed of the target vehicle from its current position to the target collection point based on the target road conditions of the target road segment, the gravitational acceleration of the target vehicle, and the maximum safe braking distance. The target vehicle speed determination module is used to determine the target vehicle speed from at least one candidate vehicle speed based on the candidate vehicle speed, the candidate gear corresponding to the candidate vehicle speed, the vehicle information of the target vehicle, the slope of the target collection point, and the length of the target road segment, and to determine the target gear corresponding to the target vehicle speed. The target information display module is used to display the target vehicle speed and the target gear on the vehicle display terminal to prompt the driver; The target vehicle speed determination module includes: The transition time and candidate vehicle torque determination unit is used to sum the current vehicle speed and the candidate vehicle speed from the vehicle information of the target vehicle to obtain a first speed corresponding to the candidate vehicle speed; take the quotient between the first speed and the length of the target road segment as the transition time for the target vehicle to travel from its current position to the target collection point at the candidate vehicle speed; determine a second speed corresponding to the candidate vehicle speed based on the current vehicle speed and the candidate vehicle speed; determine the vehicle acceleration of the target vehicle based on the second speed and the length of the target road segment; and determine the candidate vehicle torque corresponding to the candidate vehicle speed based on the vehicle information of the target vehicle, the candidate vehicle speed, the vehicle acceleration, and the slope of the target collection point. A candidate fuel consumption determination unit is used to determine the vehicle engine speed corresponding to the candidate vehicle speed based on the candidate vehicle speed and the candidate gear corresponding to the candidate vehicle speed; and to determine the candidate fuel consumption corresponding to the candidate vehicle speed based on the vehicle engine speed and the candidate vehicle torque. A candidate driving cost determination unit is used to determine the gear difference between the candidate gear and the current gear of the target vehicle; and to perform a weighted summation of the gear difference, the transition time, and the candidate fuel consumption to obtain the candidate driving cost corresponding to the candidate vehicle speed. The target vehicle speed determination unit is used to determine the target vehicle speed from the at least one candidate vehicle speed based on the candidate driving costs corresponding to the at least one candidate vehicle speed.

6. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor to enable the at least one processor to perform the driving prompting method according to any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the driving prompting method according to any one of claims 1-4.

Images