Patent ID: 7394355

Claim:
A collision prevention detector to be mounted on a vehicle, transmitting a sequence of transmissions of IR signals, whereby the signals are transmitted in sequences alternating between at least one at the right and to the left positioned LED, when both signals provide a return/reflected signal to an IR-receiver an object is determined as present within an area from the point where the transmitted signals intersect/cross, whereby the sequencing of signals makes it possible to position a return signal from the object, as one of the signals has to confirm the other signal to provide a warning signal, said detector further comprising: at least two sets of said LED's positioned to the right and to the left, whereby a first set detects objects in a near-field zone of the vehicle, and a second set beyond said first field in a far-field zone; a processor connected to said first and second sets for detection of near-and far-field zones and being provided the vehicle speed; and a comparator connected to or comprised in said processor, which compares the vehicle speed with a pre-determined loss of measured distance by measuring how fast the vehicle approaches said object by closing in from the far-field zone to the near-field zone, whereby an alarm is given through an indicator device mounted on said vehicle alerting a vehicle driver to pay attention to the closing in of an approaching object.