System for detecting or estimating center-of-gravity, lateral rollover limit or cargo weight
First Claim
Patent Images
1. A center-of-gravity detection system comprising:
- a container cargo vehicle comprising a container capable of carrying cargo and a container chassis upon which the container is placed, the container cargo vehicle adapted to be towed by a towing vehicle;
a shake detector configured to detect shakes in the directions of the self-weight and width of said towed container cargo vehicle during travel of said towed container cargo vehicle; and
an arithmetic unit;
whereinwhen the shake in the self-weight direction corresponds to a vertical reciprocation motion in which a center of gravity of said container cargo vehicle is a mass point and the shake in a width direction corresponds to a horizontal simple pendulum motion in which an axle center of said container cargo vehicle is a support point and a center of gravity of said container cargo vehicle is a mass point;
said arithmetic unit is configured to derive, based upon the frequency of the simple pendulum motion, the location of the center of gravity of said container cargo vehicle with respect to the travel direction of said container, and to further derive, based upon the frequency of the reciprocation motion, the frequency of the simple pendulum motion, and the central angle of the simple pendulum motion, the location of the center of gravity of said container cargo vehicle with respect to a cross-section surface perpendicular to the travel direction of said container.
1 Assignment
0 Petitions
Accused Products
Abstract
A center-of-gravity detection system includes a vehicle capable of carrying cargo and adapted to be towed by a towing vehicle, a shake detector configured to detect shakes in the directions of the self-weight and width of the towed vehicle during travel of the towed vehicle, and an arithmetic unit. The arithmetic unit is configured to derive, based upon physical quantities that correlate with the shakes, the location of the center of gravity, in three-dimensional space, of the towed vehicle.
-
Citations
15 Claims
-
1. A center-of-gravity detection system comprising:
-
a container cargo vehicle comprising a container capable of carrying cargo and a container chassis upon which the container is placed, the container cargo vehicle adapted to be towed by a towing vehicle; a shake detector configured to detect shakes in the directions of the self-weight and width of said towed container cargo vehicle during travel of said towed container cargo vehicle; and an arithmetic unit; wherein when the shake in the self-weight direction corresponds to a vertical reciprocation motion in which a center of gravity of said container cargo vehicle is a mass point and the shake in a width direction corresponds to a horizontal simple pendulum motion in which an axle center of said container cargo vehicle is a support point and a center of gravity of said container cargo vehicle is a mass point; said arithmetic unit is configured to derive, based upon the frequency of the simple pendulum motion, the location of the center of gravity of said container cargo vehicle with respect to the travel direction of said container, and to further derive, based upon the frequency of the reciprocation motion, the frequency of the simple pendulum motion, and the central angle of the simple pendulum motion, the location of the center of gravity of said container cargo vehicle with respect to a cross-section surface perpendicular to the travel direction of said container. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A lateral rollover limit velocity estimation system, comprising:
-
a vehicle capable of carrying cargo and adapted to be towed by a towing vehicle; and an arithmetic unit; wherein the arithmetic unit is configured to obtain the location of the center of gravity, in three-dimensional space, of said towed vehicle and the curvature radius of a curved road section along which said towed vehicle travels and to derive a lateral rollover limit velocity for the curved road section in response to the obtained curvature radius with the use of the obtained location of the center of gravity; and wherein said arithmetic unit is configured to derive the lateral rollover limit velocity on the basis of; a first expression which represents, by means of the center-of-gravity location of said towed vehicle relative to the cross-section surface perpendicular to the travel direction of said towed vehicle, a relationship between the velocity of said towed vehicle and the curvature radius in the event that said towed vehicle is brought into rotation centered on a turning outer wheel of said towed vehicle; and a second expression which represents, by means of the center-of-gravity location of said towed vehicle relative to the travel direction of said towed vehicle, a relationship between the velocity of said towed vehicle and the curvature radius in the event that said towed vehicle is brought into rotation centered on a point of connection between said towing vehicle and said towed vehicle. - View Dependent Claims (9, 10)
-
-
11. A cargo weight estimation system comprising:
-
a vehicle capable of carrying cargo and adapted to be towed by a towing vehicle; and an arithmetic unit; wherein said arithmetic unit is configured to obtain the location of the center of gravity, in three-dimensional space, of said towed vehicle loaded with the cargo and the location of center of gravity, in three-dimensional space, of said towed vehicle without the cargo and to derive the weight of the cargo with the use of the obtained two center-of-gravity locations. - View Dependent Claims (12, 13, 14)
-
-
15. A computer-readable storage medium storing a program for causing a computer to execute a method comprising steps of:
-
receiving information on shake in the self-weight direction of a container cargo vehicle during travel of the container cargo vehicle from a shake detector, the container cargo vehicle comprising a container capable of carrying the cargo and a container chassis on which said container is placed and being adapted to be towed by a towing vehicle, and the shake in the self-weight direction corresponding to a vertical reciprocation motion in which the center of gravity of said container cargo vehicle is a mass point; receiving information on shake in the width direction of said towed container cargo vehicle during travel of said towed container cargo vehicle from the shake detector, the shake of the width direction corresponding to a horizontal simple pendulum motion in which the axle center of said container cargo vehicle is a support point and the center of gravity of said container cargo vehicle is a mass point; deriving, based upon the frequency of the simple pendulum motion, the location of the center of gravity of said container cargo vehicle with respect to the travel direction of said container; and deriving, based upon the frequency of the reciprocation motion, the frequency of the simple pendulum motion, and the central angle of the simple pendulum motion, the location of the center of gravity of said container cargo vehicle with respect to a cross-section surface perpendicular to the travel direction of said container.
-
Specification