| 摘要 |
PROBLEM TO BE SOLVED: To accurately detect a crane attitude with a simple constitution. SOLUTION: This device has a first receiving antenna 10a arranged in a machine body 2 of a crane and receiving a satellite wave emitted from a satellite for providing positioning information, a second receiving antenna 10b arranged in a tip part of a boom 3 supported so as to be capable of derricking from the machine body 2 and receiving the satellite wave, and an attitude arithmetic operation part 11 for respectively arithmetically operating the boom length L, a boom angleθ1, a work radius (r) and the work height (h) on the basis of a signal from the first receiving antenna 10a and the second receiving antenna 10b. COPYRIGHT: (C)2006,JPO&NCIPI
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