Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Method and apparatus for detecting angular phase difference
A rotational phase difference detecting system, a method that is capable of very accurately detecting a rotational phase difference between a plurality of rotating bodies, a machine operating-state monitoring system, and a method employing the rotational phase difference detecting system. The detecting system has a first rotating body with a first mark, a second rotating body with a second mark, a mark sensor for detecting the first mark, a first camera for imaging the second mark when the mark sensor detects the first mark, and a display section for displaying the second mark imaged by the first camera. The rotational phase difference is detected from a position of an image of the second mark displayed on the display section and is thus detected very accurately with a simple construction comprising the mark sensor, the first camera, and the display section.
Mitsubishi Heavy Industries, Ltd.
B
B41F
inventional
Atsushi Masahiro Junichi Hiroshi
Ikeda Yamaguchi Ibushi Yamashita