Patent ID: 9229105
Filing Date: 2016-01-05
CPC Classification: G01S,G05D

Claim Text:
1. A relative position detection device that is applied to a traveling system that allows first and second vehicles to travel in such a manner that the first vehicle precedes and the second vehicle follows the first vehicle, the detecting device comprising: a sensor pair of first and second sensors that are located in a right and left direction at the same height on right and left end portions of at least one of a rear surface of the first vehicle and a front surface of the second vehicle, the first and second sensors emitting transmission waves from their located positions in their front directions and receiving their reflected waves; and an arithmetic unit that compares a first intensity of the reflected waves received by the first sensor and a second intensity of the reflected waves received by the second sensor, and detects a direction of deviation between the first and second vehicles in the right and left direction on the basis of a difference between the first intensity of the reflected waves received by the first sensor and the second intensity of the reflected waves received by the second sensor.