Title:
障害物検出装置
Document Type and Number:
Japanese Patent JP5679909
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that a large error is included in an obtained inclination angle since a distance image is blurred a lot, even while a concentration gradient is obtained by image processing of a distance image and a rough inclination angle of an obstacle can be estimated from a gradient direction by a conventional aperture synthesis method for obtaining a position of an obstacle.SOLUTION: Ultrasonic signals generated in a signal transmission part are transmitted from one of a plurality of ultrasonic sensors, the ultrasonic signals reflected from an obstacle and obtained by the plurality of ultrasonic sensors are received/stored in a signal reception part, and an obstacle position is specified from the received ultrasonic signals in an obstacle position detection part. An obstacle detector includes a signal intensity ratio angle estimation part for specifying reflected waves from the obstacle from reception signals of the respective ultrasonic sensors, obtaining a ratio of signal intensities of the reflected waves among the ultrasonic sensors, and obtaining an angle of the obstacle by referring to a signal intensity ratio angle calculation table storing a signal intensity ratio of the reflected waves from the obstacle obtained in the respective ultrasonic sensors with the obstacle, the ultrasonic sensors and the angle of the obstacle as parameters.
More Like This:
| JPH0419214 | SUSPENSION DEVICE FOR VEHICLE |
| JP2003107157 | OBSTRUCTION DETECTOR AND RECORDING MEDIUM |
| JP4555361 | Ultrasonic sensor |
Inventors:
新山 摩梨花
平野 敬
平野 敬
Application Number:
JP2011125133A
Publication Date:
March 04, 2015
Filing Date:
June 03, 2011
Export Citation:
Assignee:
三菱電機株式会社
International Classes:
G01S15/93
Attorney, Agent or Firm:
Michiharu Soga
Suzuki Ken 7
Jun Kajinami
Kazuhiro Oya
Toshikazu Ueda
Junichiro Yoshida
Tomohito Iino
Suzuki Ken 7
Jun Kajinami
Kazuhiro Oya
Toshikazu Ueda
Junichiro Yoshida
Tomohito Iino