Vehicle speed calibration method and device and vehicle
A vehicle speed and calibration method technology, which is applied in the testing/calibration of speed/acceleration/shock measurement equipment, measurement devices, speed/acceleration/shock measurement, etc., and can solve the problem of being unable to accurately obtain the real-time speed of the vehicle
Pending Publication Date: 2021-08-06
武汉小安科技有限公司
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[0004] The invention provides a vehicle speed calibration method, device and vehicle to solve the defect that the real-time speed of the vehicle cannot be accurately obtained in the prior art
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[0031] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0032] At present, the models, motor models, and wheel sizes of shared vehicles are different. When the controller is adapted, it cannot fully match all different types of vehicles, motors, etc., so the controller cannot accurately calculate the The real-time speed of the vehicle is obtained from the wheel diameter and the Hall pole logarithm of the motor, which is prone to inaccurate speed, ...
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The invention provides a vehicle speed calibration method and device and a vehicle, and the method comprises the steps: judging whether the vehicle runs along a straight line in a preset time period or not when the GPS speed of the vehicle is greater than a preset speed, and obtaining a plurality of controller speeds and GPS speeds corresponding to the controller speeds if the vehicle runs along the straight line in the preset time period; performing data fitting on the speed of each controller and the GPS speed corresponding to the speed of each controller to obtain a speed correction coefficient; and calibrating the controller speed of the vehicle based on the speed correction factor. According to the invention, data fitting is carried out on the speed of each controller and the GPS speed corresponding to the speed of each controller to obtain the speed correction coefficient, and the speed of the controller is calibrated based on the speed correction coefficient so that the calibrated speed of the controller can accurately reflect the current speed of the vehicle.
Description
technical field [0001] The invention relates to the technical field of speed calibration, in particular to a vehicle speed calibration method, device and vehicle. Background technique [0002] At present, the speed detection method of shared vehicles is as follows: the controller of the vehicle matches the motor and the wheels, and the controller calculates the real-time speed of the vehicle according to the number of Halls, the diameter of the wheels, and the number of Hall poles of the motor, and communicates Send to the central control. [0003] However, the models, motor models, and wheel sizes of shared vehicles are different. When the controller is adapted, the speed is prone to inaccurate situations, resulting in large differences in the mileage of the vehicle, the vehicle overspeed prompt sound, and the maximum speed of the vehicle. error. Contents of the invention [0004] The invention provides a vehicle speed calibration method, device and vehicle to solve the...
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CPCG01P21/02
Inventor 钱建安白恒培李超超江涛张瑛
Owner 武汉小安科技有限公司