Title:
構造体変状検知システム、構造体変状検知方法、及びプログラム
Document Type and Number:
Japanese Patent JP6666207
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it possible to precisely efficiently measure a position and an amount of a step of a joint section 27 even when measurement is performed by a test car running at high speed.SOLUTION: A structure changed state detection system includes a PC12 that acquires first displacement data and second displacement data from an external memory 8, calculates a square root sum of difference from the second displacement data while shifting the first displacement data by a specified quantity relative to a time axis t, and estimates speed of a vehicle 24 based on a shift time when the square root sum of the difference becomes minimum. The PC12 specifies vibration data related to a joint section 27 by the speed of the vehicle 24 to calculate surface smoothness and an amount of a step of the joint section 27 based on the specified data.SELECTED DRAWING: Figure 1
Inventors:
Juichi Nagafune
Takeshi Nakao
Hiroshi Iwabuki
Akito Yabe
Takeshi Nakao
Hiroshi Iwabuki
Akito Yabe
Application Number:
JP2016132367A
Publication Date:
March 13, 2020
Filing Date:
July 04, 2016
Export Citation:
Assignee:
East Japan Expressway Co., Ltd.
Central Japan Expressway Co., Ltd.
West Japan Expressway Co., Ltd.
Expressway Research Institute Co., Ltd.
Structural Planning Institute Co., Ltd.
Central Japan Expressway Co., Ltd.
West Japan Expressway Co., Ltd.
Expressway Research Institute Co., Ltd.
Structural Planning Institute Co., Ltd.
International Classes:
G01C7/04; G01B11/30; G01B21/00
Domestic Patent References:
| JP60233211A | ||||
| JP7248221A | ||||
| JP4043908A | ||||
| JP2010066040A |
Attorney, Agent or Firm:
Hitoshi Suzuki
Ogawa Yayoi
Ogawa Yayoi