Traffic flow monitoring device, traffic flow monitoring method, and recording medium
AssigneeNEC Corporation
InventorYuma MATSUDA
Life of this patent
Estimating the term…
Abstract
The traffic flow monitoring device includes a detection unit that outputs a first comparison result, which is a result of comparing a first reference speed and an average speed at a first time, on the basis of speed data associating a time with an average speed of a vehicle travelling through a prescribed spot on a road, an approximate speed calculation unit that derives an approximate speed at the first time on the basis of a change in the average speed at or before the first time and a determination unit that determines a change in the traffic flow at the prescribed spot on the basis of the first comparison result and a second comparison result which is the result of comparing the approximate speed and a second reference speed.
Claims10
A traffic flow monitoring device comprising:
- a detection circuit configured to output a first comparison result being a comparison result between an average speed at a first time and a first reference speed, based on speed data in which the average speed of a vehicle traveling through a prescribed spot on a road and a time are associated with each other;
- an approximate speed calculation circuit configured to acquire an approximate speed at the first time, based on a change in the average speed at or before the first time;
- and
- a determination circuit configured to determine a change in a traffic flow at the prescribed spot, based on the first comparison result and a second comparison result being a comparison result between the approximate speed and a second reference speed.
A traffic flow monitoring method comprising:
- outputting a first comparison result being a comparison result between an average speed at a first time and a first reference speed, based on speed data in which the average speed of a vehicle traveling through a prescribed spot on a road and a time are associated with each other;
- acquiring an approximate speed at the first time, based on a change in the average speed at or before the first time;
- and
- determining a change in a traffic flow at the prescribed spot, based on the first comparison result and a second comparison result being a comparison result between the approximate speed and a second reference speed.
A tangible and non-transitory recording medium recording a program for causing a computer included in a traffic flow monitoring device to execute:
- a procedure of outputting a first comparison result being a comparison result between an average speed at a first time and a first reference speed, based on speed data in which the average speed of a vehicle traveling through a prescribed spot on a road and a time are associated with each other;
- a procedure of acquiring an approximate speed at the first time, based on a change in the average speed at or before the first time;
- and
- a procedure of determining a change in a traffic flow at the prescribed spot, based on the first comparison result and a second comparison result being a comparison result between the approximate speed and a second reference speed.
Dependencies are inferred from the claim text.