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    • 3. 发明授权
    • System and method for determining vehicle travel routes and mileage
    • 确定车辆行驶路线和里程的系统和方法
    • US5974356A
    • 1999-10-26
    • US951033
    • 1997-10-15
    • Thomas F. DoyleMark BauckmanDennis Harlow
    • Thomas F. DoyleMark BauckmanDennis Harlow
    • G01C21/28G01C22/02G01S1/24G01S5/02G01S5/14G08G1/127H04B7/185G01C21/20
    • H04B7/18554G01C21/28G01C22/02G01S5/02G08G1/127G01S1/24
    • A system and method for determining a route of travel and associated mileage of a vehicle is disclosed. The system records a vehicle's identification number, location, and odometer mileage transmitted via satellite to a fixed station. The location data is provided to a processor which determines an estimated route of travel by said vehicle using a routing program. The estimated route is comprised of a plurality of position segments, each position segment having a corresponding mileage and average expected speed. The route of travel may be checked for accuracy by comparing the estimated route mileage to the odometer mileage. If a significant difference is found, a diagnostic procedure is performed which attempts to correct the mismatch by evaluating alternate routes of travel. If the alternative route mileage agrees with the actual odometer miles within a predetermined threshold, the new route and associated mileage is used as the "true" route taken by the vehicle. The diagnostic procedure can also identify position segments where the vehicle appeared to be traveling much slower or faster than the average speed for that position segment. The mileage difference can then be allocated proportionally to each identified suspect position segment to provide an accurate estimate of the miles driven within the predetermined jurisdiction. Once the route of travel has been verified, the mileage traveled by the vehicle can be accurately determined and used for various computations. For example, state fuel-taxes may be accurately calculated from the mileage information.
    • 公开了一种用于确定车辆行驶路线和相关里程的系统和方法。 系统将通过卫星传输的车辆识别号码,位置和里程计里程记录到固定电台。 位置数据被提供给处理器,该处理器使用路由程序确定所述车辆的估计行驶路线。 估计路线由多个位置段组成,每个位置段具有相应的里程和平均预期速度。 可以通过将估计的路线里程与里程计里程进行比较来检查旅行路线的准确性。 如果发现显着的差异,则执行诊断程序,其尝试通过评估替代的行进路线来校正不匹配。 如果替代路线里程与预定阈值内的实际里程表里程一致,则将新路线和相关里程用作车辆所采取的“真实”路线。 诊断程序还可以识别车辆看起来比该位置段的平均速度慢得多或更快的位置段。 然后可以按照每个确定的嫌疑人位置段按比例分配里程差,以提供在预定管辖范围内驱动的里程的准确估计。 一旦旅行路线得到验证,车辆行驶的里程可以准确地确定并用于各种计算。 例如,可以从里程信息准确地计算出国家燃油税。