Title:
車両前方監視装置
Document Type and Number:
Japanese Patent JP5865933
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a vehicle front monitoring device capable of determining whether object detection performance degrades even if the direction of a leading vehicle cannot be measured.SOLUTION: A signal processing unit 14 of a vehicle calculates a distance to a leading vehicle 2 and a relative velocity of the leading vehicle 2 on the basis of a reflection wave reflected by the leading vehicle 2; a tracking processing unit 16 tracks the leading vehicle 2 based on the distance to the leading vehicle 2, the relative velocity of the leading vehicle 2, and a velocity of the vehicle 10, and calculates maximum detected distances during approach and separation if the leading vehicle 2 approaches and separates from the vehicle 10; a maximum detection distance comparison unit 17 calculates an absolute value of a difference between the maximum detected distances during approach and separation, and compares the absolute value of the difference with a preset predetermined reference value; an average value calculation unit 18 calculates an average value of the maximum detected distances during approach and separation if it is determined that the absolute value of the difference is equal to or smaller than the reference value; an average value comparison unit 19 compares the average value with a preset predetermined reference value; and a detected distance reduction determination unit 20 determines whether object detection performance degrades if the average value falls below the predetermined reference value.
Inventors:
Noriyoshi Yamashina
Application Number:
JP2014055738A
Publication Date:
February 17, 2016
Filing Date:
March 19, 2014
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G01S7/40; B60R21/00; G01S13/93; G08G1/16
Domestic Patent References:
| JP11094946A | ||||
| JP2012127906A | ||||
| JP200174829A |
Attorney, Agent or Firm:
Masuo Oiwa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa