| 摘要 |
The laser guidance assembly (20) includes a platform (26) supported on a vehicle. A mirror support (24) is rotatably supported by the platform (26) for rotation about a vertical axis. A first mirror (22) is supported by the mirror support (24) for rotation about the vertical axis. The assembly (20) further includes a diode (30) attached to the platform (26) for emitting a laser beam (32) in a laser path (34). The assembly (20) is characterized by having a pivotal connection (36) between the first mirror (22) and the mirror support (24) for allowing oscillation of the first mirror (22) about a horizontal axis (48) relative to the platform (26) and the mirror support (24). The assembly (20) has a second mirror (38) supported by the platform (26) and fixed relative to the platform (26) for reflecting a reflected laser beam (40) from the first mirror (22). The second mirror (38) has a filter section (44) and reflective section (46) for allowing the laser beam (32) to pass through and for reflecting the reflected laser beam (40). A processor (52) integrates a first signal (132) which is the reflected laser beam (40) signal, an oscillation signal (134) for the position of the first mirror (22) about the horizontal axis (48), and a rotational signal (136) for the position of the first mirror (22) about the vertical axis (28) to determine the precise location of a lawn mower upon which the assembly (20) is mounted.
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