APPARATUS FOR MEASURING DISTANCE OF OBJECT BY USING PULSE LASER AND METHOD FOR THE SAME

摘要

PURPOSE: An apparatus for measuring the distance of an object by using the pulse laser and a method for the same are provided to further accurately measure the distance of the object without depending on the type of object, the energy of the laser light and the size of the pulse. CONSTITUTION: An apparatus for measuring the distance of an object by using the pulse laser includes a sensor unit(31), a delay(32), a first comparator(33a) and a controller(38). The sensor unit(31) receives the first optical signal(V1) emitted from the laser and the second optical signal(V1') scattered by the object. The delay(32) delays the first optical signal(V1) and the second optical signal(V1') from the sensor unit(31). The first comparator(33a) outputs a first pulse signal(a) including a first input pulse signal and a first scattering pulse signal obtained by comparing the first optical signal(V1) and the third optical signal(V1,d) with the second optical signal(V1') and the fourth optical signal(V1,d'). And, the controller(38) measures the first input pulse signal inputted from the first comparator(33a) and the rising trigger time of the first scattering pulse signal and measures the distance of the object through the difference of the measured time.