The invention discloses a traffic signal lamp countdown display method and system capable of accurately, smoothly and uniformly displaying countdown display time. Comprising the following steps: a traffic signal lamp information acquisition step: a vehicle-mounted system receives a data packet containing traffic signal lamp information at a preset time interval; a post-synchronization countdown time calculation step of calculating the post-synchronization countdown time obtained by synchronizing the system time of the vehicle-mounted system by using the timestamp and the countdown time contained in the data packet; a countdown decline rate adjusting step: adjusting the countdown decline rate of the vehicle-mounted system according to the relationship between the synchronized countdown time and the predicted value of the countdown display time of the vehicle-mounted system side; and a countdown display time determination step of determining the synchronized countdown display time of the vehicle-mounted system side according to the current countdown display time of the vehicle-mounted system side and the adjusted countdown decline rate under the condition that the data packet is received for the Nth time, N being a natural number greater than or equal to 2.
一种能够准确度且平滑均匀地显示倒计时显示时间的交通信号灯倒计时显示方法及系统。包括:交通信号灯信息取得步骤,车载系统以预定的时间间隔接收含有交通信号灯信息的数据包;同步后倒计时时间计算步骤,使用数据包中所含的时间戳及倒计时时间,计算对车载系统的系统时间进行同步而得到的同步后倒计时时间;倒计时递减速率调整步骤,根据同步后倒计时时间与车载系统侧的倒计时显示时间的预测值的关系,对车载系统的倒计时递减速率进行调整;倒计时显示时间决定步骤,在第N次接收到数据包的情况下,根据车载系统侧的当前的倒计时显示时间以及调整后的倒计时递减速率,决定同步后的车载系统侧的倒计时显示时间,N为大于等于2的自然数。
Traffic signal lamp countdown display method and traffic signal lamp countdown display system
交通信号灯倒计时显示方法及交通信号灯倒计时显示系统
2023-05-05
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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