/// <summary>
/// 查找N秒前的缓存数据，缓存时间不能超过历史时刻：HistoryTime
/// </summary>
/// <param name="carSensorSet"></param>
/// <param name="historyTime">历史时刻：HistoryTime</param>
/// <param name="seconds">N秒前数据</param>
/// <returns></returns>
public static CarSignalInfo[] QueryCachedSeconds(this ICarSignalSet carSensorSet, DateTime historyTime, double seconds)
{
var cachedDateTime = DateTime.Now.AddSeconds(-seconds);
var time = cachedDateTime < historyTime ? historyTime : cachedDateTime;
return(carSensorSet.Query(time));
}
/// <summary>
/// 查找N秒前的缓存数据
/// </summary>
/// <param name="carSensorSet"></param>
/// <param name="seconds"></param>
/// <returns></returns>
public static CarSignalInfo[] QueryCachedSeconds(this ICarSignalSet carSensorSet, double seconds)
{
var cachedDateTime = DateTime.Now.AddSeconds(-seconds);
return(carSensorSet.Query(cachedDateTime));
}