Patent ID: 9651371
Date: 2017-05-16
CPC Classifications: B60W,B60Y,G01C,G01M

Claim:
1. An inclination angle calculation device comprising: a motion detector that detects motions of a traveling object during travel, in two directions included in a cross-section surface of the traveling object, the two directions being orthogonal with each other, wherein the traveling object is a trailer truck; and an arithmetic device that calculates an inclination angle of the traveling object during travel in the cross-section surface using (i) a frequency of the motion in one of the two directions, (ii) a rolling frequency in the other direction of the two directions; and (iii) an angle formed between (a) a virtual straight line passing through a virtual center of gravity and an axle center of the traveling object and (b) an axle position line, to prevent overloading of the trailer truck or prevent a bending phenomenon between a towing vehicle of the trailer truck and a towed vehicle of the trailer truck on a curved road; wherein the motion detector includes an angular velocity sensor mounted on the traveling object, the angular velocity sensor comprising an angular velocity sensitive axis that is adjustable in the other direction of the two directions.