The invention discloses a vehicle speed display method and system of a vehicle digital instrument. The method comprises the following steps that duty ratio filtering processing is conducted on pulse signals collected by a Hall sensor; converting the filtered pulse signal by using a set K-value pulse coefficient to obtain a real-time vehicle speed; performing mean smoothing processing on the real-time vehicle speed to obtain a smooth vehicle speed; determining an updated vehicle speed according to whether a difference value between the first smooth vehicle speed and the second smooth vehicle speed is greater than a vehicle speed updating threshold; the updated vehicle speed is refreshed once every preset time, and the updated vehicle speed is displayed. According to the invention, through smoothing the mean value of the vehicle speed, the updated vehicle speed is determined according to whether the difference value between the adjacent first smooth vehicle speed and second smooth vehicle speed is greater than the vehicle speed updating threshold, the influence of vehicle speed data jitter is reduced, the calculation method is simple, the calculation speed is fast, the real-time performance is good, and the user experience is good.
本发明公开了一种车辆数字仪表车速显示方法及系统,该方法包括以下步骤:将霍尔传感器采集的脉冲信号进行占空比过滤处理;利用设定的K值脉冲系数对过滤处理后的脉冲信号进行转换,获得实时车速;对所述实时车速进行均值平滑处理,获得平滑车速;根据前后相邻的第一平滑车速和第二平滑车速的差值是否大于车速更新门限,确定更新车速;每隔预设时间刷新一次更新车速,并显示所述更新车速。本发明,通过对车速的均值平滑处理,根据前后相邻的第一平滑车速和第二平滑车速的差值是否大于车速更新门限,确定更新车速,减小了车速数据抖动的影响,计算方法简单,计算速度快,实时性好,用户体验好。
Vehicle speed display method and system of vehicle digital instrument
一种车辆数字仪表的车速显示方法及系统
2022-09-20
Patent
Electronic Resource
Chinese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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