SENSOR SYSTEM FOR DETECTING RELATIVE POSITION AUTOMATICALLY

摘要

PROBLEM TO BE SOLVED: To detect relative position of two automobiles by combining a sensor independent of the angle with a sensor dependent on the angle thereby obtaining the distance and the relative angle of two automobiles. SOLUTION: A distance sensor 1 determines the distance (r) to an object 5 by measuring the propagation time of an emitted signal 2. A second sensor system comprises an optoelectronic transmitter and receiver 3 arranged geometrically. The distance sensor 1 and the optoelectronic transmitter and receiver 3 cover a common searching region and emit light in a common direction. The distance sensor 1 determines the longitudinal position up to the object 5 through the measurement of propagation time thus detecting the distance (r). The optoelectronic transmitter and receiver 3 also captures the object 5. One optical light is reflected from the surface of the object 5 and the position of the receiver at the receiving fringe serves as the scale of azimuthθ. Consequently, two-dimensional position of the object 5 can be detected at a measurement detecting section 7 based on the distance (r) and the azimuthθ.