Collision avoidance system, position detector, collision avoidance method, position detecting method and program for realizing the same
AssigneeNEC Corporation
InventorMinoru Kodaira
Life of this patent
Estimating the term…
Abstract
A travelling track on which a plurality of movers travel is divided into sections of various lengths. A position/velocity calculator obtains the position and velocity of the movers in the sections, using the position and velocity of each mover having passed the boundary of the section in which the mover travels. A collision-chance determiner determines whether there is a great chance that each pair of neighboring movers will collide with each other, using the position and velocity obtained by the position/velocity calculator. An emergency stopper stops a pair of neighboring movers that the collision-chance determiner determined that they would collide with each other, in an emergency.
Claims30
A collision avoidance system which avoids a collision between a plurality of movers travelling on a path divided into sections or various lengths, said system comprising:
- a position/velocity calculator which obtains a first position and first velocity of each of the plurality of movers travelling in any of the sections, using a second position and second velocity of each of the plurality of movers which are obtained in a case where each of the plurality of movers passes a boundary between adjacent sections;
- a collision-chance determiner which determines whether the is a great chance that each two neighboring movers will collide with each other, using the first position, the first velocity, the second position and the second velocity;
- and
- an emergency stopper which stops two neighboring movers that said collision-chance determiner determines that there is the great chance between the two neighboring movers, in an emergency.
A position detector comprising:
- a first calculation unit which obtains a position and velocity of a mover travelling on a path divided into sections or various lengths, in a case where the mover passes a boundary between adjacent sections;
- and
- a second calculation unit which obtains a position of the mover travelling in any of the sections, using the position and velocity obtained by said first calculation unit.
A collision avoidance method of avoiding a collision between a plurality of movers travelling on a path divided unit sections of various lengths, said method comprising:
- obtaining a first position and first velocity of each of the plurality of movers travelling in any of the sections, using a second position and second velocity of each of the plurality of movers which are obtained in a case where each of the plurality of movers passes a boundary between adjacent sections,
- determining whether there is a great chance that each two neighboring movers will collide with each other, using the first position, the first velocity, the second position and the second velocity;
- and
- stopping two neighboring movers that there is the great chance of collision between the two neighboring movers, in an emergency.
A position detecting method comprising;
- obtaining a first position and first velocity of a mover travelling on a path divided into sections of various lengths, in a case where the mover passes a boundary between adjacent sections;
- and
- obtaining a second position and second velocity or the mover includes obtaining a position of the mover travelling in any of the sections, using the obtained first position and first velocity.
A program for controlling a computer to function as a collision avoidance system which avoids a collision between a plurality of movers travelling on a path divided into sections of various lengths, said system comprising.
- a position/velocity calculator which obtains a first position and first velocity of each of the plurality of movers travelling in any of the sections, using a second position and second velocity of each of the plurality of movers which are obtained in a case where each of the plurality of movers passes a boundary between adjacent sections;
- a collision-chance determiner which determines whether there is a great chance that each two neighboring movers will collide with each other, using the first position, the first velocity, the second position and the second velocity;
- and
- an emergency stopper which stops two neighboring movers that said collision-chance determiner determines that there is the great chance between the two neighboring movers, in an emergency.
A program for controlling a computer to function as a position detector comprising:
- a first calculation unit which obtains a position and velocity of a mover travelling on a path divided into sections of various lengths, in a case where the mover passes a boundary between adjacent sections;
- and
- a second calculation unit which obtains a position of the mover travelling in any of the sections, using the position and velocity obtained by said first calculation unit.
Dependencies are inferred from the claim text.