Movable body detecting/notifying system

• US 20010013834A1
• Filed: 04/13/2001
• Published: 08/16/2001
• Est. Priority Date: 06/05/1998
• Status: Active Grant

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Yamazaki, Takeshi
• Granted Patent: US 6,433,705 B2
• Time in Patent Office: Days
• US Class Current: 340/902
• CPC Class Codes: G08G 1/163 involving continuous checking

Abstract

To provide a movable body detecting/notifying system that is capable of determining and reporting whether another movable body exists behind an obstruction or at a position that can be verified by the sense of sight. A movable body detecting/notifying system allows a detecting movable body to detect and report a detected movable body by using electromagnetic wave communication. The detected movable body transmits a large-wavelength electromagnetic wave easily diffractable by an obstruction as well as a small-wavelength electromagnetic wave not easily diffractable by an obstruction at the same time. The detecting movable body generates a notice for reception of only the large-wavelength electromagnetic wave without the small-wavelength electromagnetic wave or a notice for reception of both the large-wavelength and small-wavelength electromagnetic waves different from the notice for reception of only the large-wavelength electromagnetic wave.

Claims

1. A movable body detecting/notifying system for allowing a detecting movable body to detect and report a detected movable body by using electromagnetic wave communication, comprising:

means mountable to the detected movable body for transmitting a large wavelength electromagnetic wave easily diffractable by an obstruction and a small-wavelength electromagnetic wave not easily diffractable by an obstruction at the same time; and

means mountable to the detecting movable body for generating a first notice for reception of only said large-wavelength electromagnetic wave without said small-wavelength electromagnetic wave or a second notice for reception of both said large-wavelength and said small-wavelength electromagnetic waves.

2. The movable body detecting/notifying system according to

claim 1

, wherein said first notice is different from said second notice.

3. The movable body detecting/notifying system according to

claim 1

, wherein an ID code for identifying the detected movable body is added to said small-wavelength electromagnetic wave generated by the detected movable body.

4. A movable body detecting/notifying system for allowing a detecting movable body to detect and report a detected movable body by using electromagnetic wave communication, comprising:

means mountable to the detected movable body for transmitting a small-wavelength electromagnetic wave not easily diffractable by an obstruction;

a repeater for receiving said small-wavelength electromagnetic wave and adding a relay code thereto, said repeater relaying said small-wavelength electromagnetic wave with said relay code added thereto in a predetermined direction;

when the detecting movable body receives said small-wavelength electromagnetic wave, said detecting movable body determines whether or not a relay code has been added to said small-wavelength electromagnetic wave; and

means mountable to the detecting movable body for generating a first notice for reception of the small-wavelength electromagnetic wave with no relay code added thereto or a second notice for reception of the small-wavelength electromagnetic wave with the relay code added thereto.

5. The movable body detecting/notifying system according to

claim 4

, wherein said first notice is different from said second notice.

6. The movable body detecting/notifying system according to

claim 4

, wherein an ID code for identifying the detected movable body is added to said small-wavelength electromagnetic wave generated by the detected movable body.

7. A movable body detecting/notifying system for allowing a detecting movable body to detect and report a detected movable body by using electromagnetic wave communication, comprising:

means mountable to the detecting movable body for receiving information on a position of the detected movable body from a traffic regulating center, the traffic regulating center receiving information on positions of movable bodies within a predetermined range;

means mountable to the detected movable body for transmitting a small-wavelength electromagnetic wave not easily diffractable by an obstruction; and

when said information on the position of the detected movable body indicates that said detected movable body is moving in a particular direction, said detecting movable body generates a first notice for reception of no small-wavelength electromagnetic wave or a second notice for reception of said small-wavelength electromagnetic wave.

8. The movable body detecting/notifying system according to

claim 7

, wherein said first notice is different from said second notice.

9. The movable body detecting/notifying system according to

claim 7

, wherein an ID code for identifying the detected movable body is added to said small-wavelength electromagnetic wave generated by the detected movable body.

10. A movable body detecting/notifying system for allowing a detecting movable body to detect and report a detected movable body by using electromagnetic wave communication, comprising:

means mountable to the detected movable body for transmitting an electromagnetic wave;

means mountable to the detecting movable body for receiving said electromagnetic wave; and

means mountable to the detecting movable body for generating first and second notices before and after a large change in detected intensity of said electromagnetic wave.

11. The movable body detecting/notifying system according to

claim 10

, wherein said first notice is different from said second notice.

12. The movable body detecting/notifying system according to

claim 10

, wherein an ID code for identifying the detected movable body is added to said electromagnetic wave generated by the detected movable body.