Title:
METHOD AND APPARATUS FOR NON-CONTACT MEASURING OF DEFLECTION OF ROAD OR RAIL
Document Type and Number:
Japanese Patent JP3851342
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To continuously measure the vertical speed of a road surface or a rail, and to create data for registering and analyzing the structure state at high speed.
SOLUTION: Equipment for non-contact measurement of the deflection of a road 2 comprises a self-propelled vehicle with a load 7 which influences at least one wheel 4, the speed of which is measured in the direction of travel. The equipment further comprises a laser device 8 from which at least one electromagnetic beam 9 is directed towards the roadway in the vicinity of the vehicle, and the Doppler frequency change in the reflection 9 is detected. An electronic circuit 10 continuously registers the results of the measurements and herewith the deflection at normal traveling speed.
Inventors:
Glenskoff, Leif
Application Number:
JP2006000191A
Publication Date:
November 29, 2006
Filing Date:
January 04, 2006
Export Citation:
Assignee:
Greenwood Engineering Actiesl Scab
International Classes:
E01C23/01; G01B21/32; B61K9/08; E01B35/12; G01B11/16; G01B21/00; G01B21/20; G01M5/00; G01N3/00
Domestic Patent References:
| JP6294713A | ||||
| JP4204009A | ||||
| JP3118477A | ||||
| JP64059113A | ||||
| JP7248221A | ||||
| JP5264261A | ||||
| JP3221807A | ||||
| JP2136404A | ||||
| JP63173912A | ||||
| JP63067811U | ||||
| JP2240504A | ||||
| JP11503520A |
Foreign References:
| EP0175665A2 |
Attorney, Agent or Firm:
Takashi Ishida
Shimichi Akihisa
Masaya Nishiyama
Shimichi Akihisa
Masaya Nishiyama