| 摘要 |
PURPOSE: A method for minimizing a sensed distance of a parking alarm is provided to park easily by displaying a distance between a vehicle and an object, and to alarm a driver by sensing an object placed in a very adjacent distance where the driver can't check. CONSTITUTION: A microcomputer(100) sequentially selects a sensor for sensing a distance between a vehicle and an object when a driver inputs a power on and off key or a parking alarm is operated. A selected sensor decides if noise is input or not for a regular time. When noise is input, the microcomputer does'n't measure the distance. The other way, when noise is not input, the microcomputer measures the distance and sets a measuring time(14) for an echo and reflecting wave. Also the microcomputer measures the distance between the object and the vehicle by conducting a long distance measuring mode. Then, if the measured distance is within the minimum set distance, the microcomputer measures the distance and if the measured distance is more than the maximum set distance, the microcomputer selects sensors again.
|
