Title:
TRAVELING SPEED SUPPORTING SYSTEM AND ANTENNA DEVICE FOR THE SAME SYSTEM
Document Type and Number:
Japanese Patent JP2001023086
Kind Code:
A
Abstract:
To issue warning for urging speed control to a vehicle traveling at a higher speed than a limited speed.
Reflected waves 120 generated when transmission waves 100 transmitted from an antenna device 10 set at a gate 11 on a road are reflected on a traveling vehicle 12 are received by the antenna device 10 so that a Doppler signal shifted in proportion to the traveling speed of a traveling vehicle 12 can be detected, and the traveling speed of the traveling vehicle 12 can be calculated and measured. Then, warning for urging speed control is issued to the traveling vehicle 12 according to the measured result.
Inventors:
HIRANO YOSHITERU
TERAJIMA MASANORI
INUI AKIHIRO
TAKEMOTO MAKOTO
TERAJIMA MASANORI
INUI AKIHIRO
TAKEMOTO MAKOTO
Application Number:
JP19183799A
Publication Date:
January 26, 2001
Filing Date:
July 06, 1999
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G09B29/10; G08G1/052; G08G1/09; (IPC1-7): G08G1/09; G08G1/052; G09B29/10
Attorney, Agent or Firm:
Teruo Aoki
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