Vehicle active deceleration early warning control method

Abstract

The invention belongs to the field of automobile manufacturing, and particularly relates to a vehicle active deceleration early warning control method. According to the method, through cloud computing and cloud storage of related information, planning is carried out in advance, and a client is pre-warned to decelerate in advance, when a driver drives a vehicle to pass through a newly-added crossroad, a temporary road-repairing deceleration strip, the system can plan in advance and remind the driver to decelerate in advance, and the situation that emergency deceleration braking operation is not timely, and the driving safety is improved is avoided. The driving comfort is reduced when the vehicle passes through the deceleration strip, and the like.

Description

Technical Field

[0001] The invention belongs to the field of automobile manufacturing, and in particular relates to a vehicle active deceleration warning control method. Background Art

[0002] When the driver drives through a newly added fork in the road, a temporary maintenance section, or a speed bump, he or she will be forced to perform emergency deceleration and braking to control the vehicle speed. If the emergency deceleration and braking operation is not performed in a timely manner, there will be the risk of an accident and reduced driving comfort when passing over the speed bump. Summary of the invention

[0003] The present invention provides a solution based on a road spectrum collection system, advance road planning, cloud computing, etc. to solve the above problems. When the driver passes through a newly added fork, a temporary maintenance section, or a speed bump, advance planning can be performed to remind the driver to slow down in advance, thereby avoiding problems such as untimely emergency deceleration and braking operations, the risk of oncoming accidents, and reduced driving comfort when passing speed bumps. The specific technical solution is as follows: A vehicle active deceleration warning control method, which is connected to the cloud real-time data and the reminder device through an active deceleration warning controller on board the vehicle, comprises the following steps: (1) Before driving, the driver inputs the destination. The onboard system plans the navigation route and requests the cloud for new speed bumps, forks, temporary repair points, roadblocks or traffic accident information, which are marked as feature points a1, a2, a3…aN. When the vehicle approaches feature points b1, b2, b3…bN, the driver is reminded to slow down in advance. (2) The vehicle system requests the cloud for segmented routes, which are c1, c2, c3, ... cN, and are subdivided into N characteristic segments. Each segment is a characteristic segment. The characteristic segments are defined according to the characteristics of the road network. Each characteristic segment has a corresponding minimum speed, maximum speed, and average speed. (3) The vehicle system requests the cloud for the recent average vehicle speed of each characteristic road section, v11, v12, v13…v1N, as well as the past average vehicle speed v21, v22, v23…v2N, and calculates the values ​​v1, v2, v3…vN of v21- v11, v21- v11, v21- v11…v2N-v1N, and takes the maximum value {v1, v2, v3…vN}max=vm. When vm is greater than a set threshold, it is considered that the road section may have a new speed bump, fork, new temporary maintenance point, roadblock or traffic accident, and the driver is reminded to slow down in advance.

[0004] Furthermore, in step (1), the values ​​of b1-a1, b2-a2, b3-a3 ... bN-aN are Y1, Y2, Y3 ... YN; Y1, Y2, Y3 ... YN are set according to the driver's or passenger's preference for braking comfort under different road conditions.

[0005] Furthermore, in step (2), the characteristic road section is a village road, a provincial road, a national road or an expressway, and corresponding minimum speed, maximum speed and average speed are set for different characteristic road sections.

[0006] Furthermore, the threshold value for vm comparison in step (3) is set according to the driver or passenger's preference for braking comfort under different road conditions.

[0007] The method of the present invention utilizes cloud computing and cloud storage related information to plan in advance and warn customers in advance to slow down. When the driver drives through a newly added fork intersection, a temporary road for repair, or a speed bump, the system can plan in advance to remind the driver to slow down in advance, thereby avoiding problems such as untimely emergency deceleration and braking operations, the risk of oncoming accidents, and reduced driving comfort when passing over speed bumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 Schematic diagram of early warning control interaction of the present invention; Figure 2 Schematic diagram of the embodiment process. DETAILED DESCRIPTION

[0009] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0010] like Figure 1 The vehicle active deceleration warning control method shown in the figure is connected to the real-time data of the cloud through the active deceleration warning controller on the vehicle, and is controlled and connected to the reminder device. The specific steps include (the flowchart is shown in FIG. Figure 2 shown): (1) Before driving, the driver inputs the destination. The onboard system plans the navigation route and requests the cloud for new speed bumps, forks, temporary repair points, roadblocks or traffic accident information, which are marked as feature points a1, a2, a3…aN. When the vehicle approaches feature points b1, b2, b3…bN, the driver is reminded to slow down in advance. (2) The vehicle system requests the cloud for segmented routes, which are c1, c2, c3, ... cN, and are subdivided into N characteristic segments. Each segment is a characteristic segment. The characteristic segments are defined according to the characteristics of the road network. Each characteristic segment has a corresponding minimum speed, maximum speed, and average speed. (3) The vehicle system requests the cloud for the recent average vehicle speed of each characteristic road section, v11, v12, v13…v1N, as well as the past average vehicle speed v21, v22, v23…v2N, and calculates the values ​​v1, v2, v3…vN of v21- v11, v21- v11, v21- v11…v2N-v1N, and takes the maximum value {v1, v2, v3…vN}max=vm. When vm is greater than a set threshold, it is considered that the road section may have a new speed bump, fork, new temporary maintenance point, roadblock or traffic accident, and the driver is reminded to slow down in advance.

[0011] In step (1), the values ​​of b1-a1, b2-a2, b3-a3 ... bN-aN are Y1, Y2, Y3 ... YN; Y1, Y2, Y3 ... YN are set according to the driver or passenger's preference for braking comfort under different road conditions.

[0012] In step (2), the characteristic road section is a village road, a provincial road, a national road or an expressway, and corresponding minimum speed, maximum speed and average speed are set for different characteristic road sections.

[0013] The threshold value for vm comparison in step (3) is set according to the driver or passenger's preference for braking comfort under different road conditions.

[0014] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A vehicle active deceleration warning control method, characterized in that: The vehicle-mounted active deceleration warning controller is connected to the cloud real-time data and connected to the reminder device control, and the steps include: (1) Before driving, the driver inputs the destination. The onboard system plans the navigation route and requests the cloud for new speed bumps, forks, temporary repair points, roadblocks or traffic accident information, which are marked as feature points a1, a2, a3…aN. When the vehicle approaches feature points b1, b2, b3…bN, the driver is reminded to slow down in advance. (2) The vehicle system requests the cloud for segmented routes, which are c1, c2, c3, ... cN, and are subdivided into N characteristic segments. Each segment is a characteristic segment. The characteristic segments are defined according to the characteristics of the road network. Each characteristic segment has a corresponding minimum speed, maximum speed, and average speed. (3) The vehicle system requests the cloud for the recent average vehicle speed of each characteristic road section, v11, v12, v13…v1N, as well as the past average vehicle speed v21, v22, v23…v2N, and calculates the values ​​v1, v2, v3…vN of v21- v11, v21- v11, v21- v11…v2N-v1N, and takes the maximum value {v1, v2, v3…vN}max=vm. When vm is greater than a set threshold, it is considered that the road section may have a new speed bump, fork, new temporary maintenance point, roadblock or traffic accident, and the driver is reminded to slow down in advance.

2. The vehicle active deceleration warning control method according to claim 1, characterized in that: In step (1), the values ​​of b1-a1, b2-a2, b3-a3 ... bN-aN are Y1, Y2, Y3 ... YN; Y1, Y2, Y3 ... YN are set according to the driver or passenger's preference for braking comfort under different road conditions.

3. The vehicle active deceleration warning control method according to claim 1, characterized in that: In step (2), the characteristic road section is a village road, a provincial road, a national road or an expressway, and corresponding minimum speed, maximum speed and average speed are set for different characteristic road sections.

4. The vehicle active deceleration warning control method according to claim 1, characterized in that: The threshold value for vm comparison in step (3) is set according to the driver or passenger's preference for braking comfort under different road conditions.

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