DISTANCE MEASUREMENT METHOD AND DISTANCE MEASUREMENT APPARATUS

PROBLEM TO BE SOLVED: To provide a distance measurement method and a distance measurement apparatus for simply calculating a distance between structures without a risk. SOLUTION: The distance measurement method of the invention utilizes a laser, measures the distance between the first and second str...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAHASHI SAKIKO, KIMURA SAKAE, TAKIUCHI YOSHIO, MATSUO NOBUYUKI, TANIGUCHI MASAMORI
Format:	Patent
Sprache:	eng
Schlagworte:	GYROSCOPIC INSTRUMENTS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING DISTANCES, LEVELS OR BEARINGS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS NAVIGATION OTHER AUXILIARY EQUIPMENT FOR RAILWAYS PERFORMING OPERATIONS PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS RAILWAYS SURVEYING TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a distance measurement method and a distance measurement apparatus for simply calculating a distance between structures without a risk. SOLUTION: The distance measurement method of the invention utilizes a laser, measures the distance between the first and second structures linearly extended, and includes: a laser measurement step S101 for irradiating one point on the second structure and two points on the first structure with the laser, and receiving a reflection light of the laser; a coordinate calculation step S103 for calculating three-dimensional coordinates of one point and two points based on the irradiation direction of the laser and a round trip time from the irradiation of the laser to a reception of the reflection light; and a distance calculation step S105 for calculating the distance between the first and second structures based on the three-dimensional coordinates. COPYRIGHT: (C)2009,JPO&INPIT