Movable body detecting/notifying system

• US 6,433,705 B2
• Filed: 04/13/2001
• Issued: 08/13/2002
• Est. Priority Date: 06/05/1998
• Status: Expired due to Fees

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Yamazaki, Takeshi
• Primary Examiner(s): Hofsass, Jeffery
• Assistant Examiner(s): NGUYEN, HUNG T
• Application Number:
  US09/833,553
• Publication Number:
  US 20010013834A1
• Time in Patent Office: 487 Days
• Field of Search: 340/933, 340/901, 340/903, 340/904, 340/435, 340/436
• US Class Current: 340/933
• 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 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.

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.