Device for providing trigger signal for avoiding collision of person and passenger car, has processing unit which determines absorption capacity of light-reflecting object based on emitted and reflected lights, to provide trigger signal

摘要

The device (140) has transmitting device (150) for emitting light of two different wavelengths. A receiving device (155) receives reflections of the emitted light. A processing unit (145) determines the distance with respect to light-reflecting object (110) on the basis of propagation time of emitting light and reflected light. The processing unit determines an absorption capacity of the object on the basis of the emitted light and reflected light so as to provide the trigger signal only if the absorption capacity of the object corresponds to the person (115). Independent claims are included for the following: (1) method for determining trigger signal in personal protection device; and (2) computer program product for determining trigger signal in personal protection device.