| 摘要 |
PURPOSE: A route guidance system is provided that kinetic status of a vehicle can be reachieved timely and spaciously CONSTITUTION: A route guidance system comprises a device for location decision(2), a device for travel direction decision(3), controller(4), additional devices(5), data readable section point(7), nonvolatile memory that stores data set of small integer having the location and the time(8), time module for grasp the time(9), and accident sensor(10). The method of a route guidance system is that the data ready cycle controlled by a controller is started by a navigation device(1) to identify the location(20). After the location identification(20), time checking(22) is followed. This is performed by a time module(9) and other method is that the vision time can be taken from GPS signal. In next step(23), a location data and a data set consisted of an equivalent time are stored in nonvolatile memory. If all the memory domain is filled with data set, the oldest data set is deleted and replaced by a record data set. If the order exist about an accident, air-bag is operated by an accident sensor(10) and the memory is interrupted.
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