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Patent Searching and Data


Title:
VEHICLE DETECTION SYSTEM
Document Type and Number:
Japanese Patent JP2008033703
Kind Code:
A
Abstract:

To provide a vehicle detection system capable of preventing the erroneous detection of the number and speed of vehicles even when the vehicle detection system is shaken or strong wind blows.

A master set 3 performs processing for determining presence/absence of the vehicle through the use of the sensing result of a slave set 2, and determines the presence/absence of the vehicle in monitor areas RX2, RX2. When the change patterns of the five latest input level values are the same among the input level values in a prescribed period from the present to the past, which are obtained by IR sensors respectively corresponding to the monitor areas RX1, RX2, it is determined that the input level values include disturbance due to the influence of the shake of the vehicle detection system and the strong wind, etc. Consequently, a determination result concerning the presence/absence of the vehicle, based on the present input level value, is replaced with the determination result concerning the presence/absence of the vehicle in the preceding period, so as to prevent the erroneous detection of the number of the vehicles.


Inventors:
NAKADA TAKASHI
Application Number:
JP2006000207394
Publication Date:
February 14, 2008
Filing Date:
July 31, 2006
Export Citation:
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Assignee:
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
G08G1/01; G01V8/20; G06T1/00
Attorney, Agent or Firm:
中野 稔
山口 幹雄
二島 英明