Vehicle speed calculation method, vehicle and electronic equipment

By using synchronous signals and motor rotation information in vehicle speed calculation, the problem of low accuracy in vehicle speed calculation when driving at low speed is solved, and more accurate and correct vehicle speed calculation is achieved. Especially in low-speed scenarios, high-precision vehicle speed data is provided for parking and panoramic splicing.

CN119716127APending Publication Date: 2025-03-28BYD CO LTD
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Patent Information

Application Number
CN202311259413.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-26
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The prior art has low accuracy in calculating vehicle speed when driving at low speed, which affects the handling accuracy of automatic parking and advanced assisted driving systems, and there is a time accumulation error in the vehicle speed calculated by motor rotation information.

Method used

By receiving the synchronization signal of the upper computer controller, the rotation information and time information of the motor are obtained after synchronous timing, and sent it to the upper computer controller to calculate the vehicle speed based on this information.

Benefits of technology

It avoids cumulative errors in vehicle speed calculation, improves the accuracy and accuracy of vehicle speed calculation, especially at low speed situations, which can provide high-precision vehicle speed data, and improves parking control and panoramic splicing effects.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN119716127A_ABST
    Figure CN119716127A_ABST
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Abstract

The invention discloses a vehicle speed calculation method, a vehicle and electronic equipment, and the method comprises the steps: receiving a synchronizing signal from an upper computer controller of the vehicle, and carrying out the synchronous timing with the upper computer controller according to the synchronizing signal; after timing is synchronized, rotation information of a motor of the vehicle is obtained; and the rotation information and the corresponding time information are sent to an upper computer controller, so that the upper computer controller calculates the speed of the vehicle based on the rotation information and the time information. The rotation information of the motor is added in the vehicle speed calculation, and time synchronization is periodically carried out, so that the accumulative error of the vehicle speed can be avoided, the more accurate and correct vehicle speed can be obtained, and particularly, the vehicle speed under the low-speed condition can be accurately provided; high-precision vehicle speed data at a low speed are provided for parking in a low-speed scene, panoramic stitching and other scenes, so that parking control is more accurate, and the panoramic stitching effect is better.
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Citation Information

Patent Citations

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