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Vehicle control method, device, equipment and medium

A vehicle control and vehicle technology, which is applied in control devices, vehicle components, transportation and packaging, etc., and can solve the problems of low accuracy and hysteresis of vehicle speed determination.

Pending Publication Date: 2022-06-24
北京主线科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The implementation of this application provides a vehicle control method, device, equipment, and medium to solve the problems of low accuracy and lag in vehicle speed determination in slope scenarios

Method used

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  • Vehicle control method, device, equipment and medium
  • Vehicle control method, device, equipment and medium
  • Vehicle control method, device, equipment and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] figure 1 The schematic diagram of the vehicle control process provided in the embodiment of the present application, the process specifically includes the following steps:

[0056] S101: According to the current position of the vehicle and the travel route, in the travel route, obtain a target gradient at a distance from the current position in the travel direction of the vehicle.

[0057] The vehicle control process provided by the embodiments of the present application is applicable to smart cars.

[0058] During the driving process of the vehicle, in order to be able to determine in time what speed the vehicle should drive at when there is a slope on the road section, in this embodiment of the present application, according to the current driving position of the vehicle and the driving route, in the driving route, Get the target slope at the set distance from the current position in the direction of travel of the vehicle. The driving route may be determined based o...

Embodiment 2

[0065] In order to improve the safety of driving, on the basis of the above-mentioned embodiment, in the embodiment of the present application, after acquiring the target gradient at the set distance from the current position in the driving direction of the vehicle, the determining Before the first target vehicle speed corresponding to the target gradient, the method further includes:

[0066] When the target gradient is greater than the first preset gradient threshold, prompt information indicating that the road ahead is too steep is output.

[0067] In order to improve driving safety, after the target gradient is determined, it can be determined whether the target gradient is greater than a first preset gradient threshold, where the first preset gradient threshold can be a specific gradient value, for example, the first preset gradient The gradient threshold may be 15° or a proportional value, for example, the first preset gradient threshold may be 8% of 90°.

[0068] When ...

Embodiment 3

[0072] In order to improve the accuracy of vehicle speed determination, on the basis of the above embodiments, in this embodiment of the present application, after the first target vehicle speed corresponding to the target gradient is determined, the control of the vehicle from the target From the position corresponding to the gradient, before driving at the first target driving speed, the method further includes:

[0073] acquiring the pitch angle of the vehicle when the vehicle travels to a position corresponding to the target gradient;

[0074] When the pitch angle is inconsistent with the angle corresponding to the target gradient, the target gradient is updated by using the pitch angle, and the updated target gradient is determined according to the pre-stored correspondence between the gradient and the vehicle speed. The corresponding second target vehicle speed is used to update the first target vehicle speed.

[0075] In order to improve the accuracy of vehicle speed d...

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Abstract

The embodiment of the invention provides a vehicle control method, device and equipment and a medium, relates to the technical field of intelligent driving, and can be used for scenes such as ports, mines, expressways and urban traffic. The method comprises the steps that according to the current position and the driving route of a vehicle, the target gradient at the set distance in front of the current position on the driving route is obtained from a high-precision map, the gradient in front can be determined in advance, and the driving speed of the vehicle is determined according to the corresponding relation between the gradient stored in advance and the driving speed. The first target driving speed is rapidly determined in a query mode, the calculation process is omitted, the time delay is lower, the response is faster, the timeliness of vehicle speed determination is ensured, the target gradient in front of the driving route is obtained in advance, vehicle speed control is carried out, and the vehicle speed control efficiency is improved. Therefore, the control accuracy can be ensured to a certain extent.

Description

technical field [0001] The present application relates to the technical field of intelligent driving, and in particular, to a vehicle control method, device, device and medium. Background technique [0002] At present, there are long-distance uphill or downhill road conditions in many areas. In order to avoid the potential safety hazard caused by the driver's control of the vehicle speed according to his own experience during the downhill process, in the related technology, the wheel speed sensor installed in the vehicle is mainly used. The collected wheel speed signal and the acceleration signal collected by the acceleration sensor are used to calculate the slope, and at the same time, the engine and automatic transmission control algorithms are combined to adjust the vehicle speed in time to achieve the effect of engine braking. [0003] However, the wheel speed sensor and the acceleration sensor collect the current driving signal in real time, that is to say, only the slo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/18
CPCB60W30/18136B60W2520/10B60W2552/15B60W2720/10
Inventor 刘鑫胡缓
Owner 北京主线科技有限公司
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