| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high versatility operation support device enabling detection of an obstacle in the neighborhood of an own vehicle to be more easily performed even though the Doppler effect is utilized. <P>SOLUTION: An operation support device includes: a relative speed range determination circuit 17 which compares the phase of a reference signal of a frequency synchronized with the frequency of a transmission wave transmitted from a transceiver microphone 13 with the phase of a reflection wave of the transmission wave received by the transceiver microphone 13, generates a binary pulse corresponding to the advance and delay of the phase with respect to the reference signal, and counts the pulse number in a predetermined time of the binary pulse; and a controller 11 which detects the presence of a side-traveling vehicle of an own vehicle based on determination that an obstacle is present around the own vehicle on the basis of the received reflection wave and the fact that a count value counted by the relative speed range determination circuit 17 is equal to or less than a first preset value. <P>COPYRIGHT: (C)2013,JPO&INPIT |
