초록 ▼

A position sensing apparatus 1 having two base stations spaced-apart a known distance on a datum line L. The base stations each comprise generators 2(a) and 2(b) which emit a rotating laser beam. The rotating laser beams are detected by a movable sensor 6 and datum sensors 7(a), 7(b) which are assoc

A position sensing apparatus 1 having two base stations spaced-apart a known distance on a datum line L. The base stations each comprise generators 2(a) and 2(b) which emit a rotating laser beam. The rotating laser beams are detected by a movable sensor 6 and datum sensors 7(a), 7(b) which are associated with the generators 2(a), 2(b) and are located on the datum line L. The time difference between detection of each laser beam by the movable and datum sensors 7(a), 7(b) is determined and is used to calculate positional angles ab6 at which the beams are detected. The position and level values may be continuously displayed in a vehicle having a movable sensor and they may be used for automatic control or may be stored for analysis.

대표청구항 ▼

A position sensing apparatus comprising: a. first and second base stations, each base station comprising a radiation generator for generating a rotating beam of radiation in a common plane at a constant angular velocity and in an opposite direction relative to the other base station, and in which th

A position sensing apparatus comprising: a. first and second base stations, each base station comprising a radiation generator for generating a rotating beam of radiation in a common plane at a constant angular velocity and in an opposite direction relative to the other base station, and in which the radiation generators are spaced apart a known distance along a datum line; b. a separate datum sensor associated with each radiation generator for detecting the beam of radiation generated by its associated radiation generator and generating a timing signal indicative thereof; and c. A movable sensor for detecting each rotating beam of radiation, timing means at the movable sensor and coupled thereto, said timing means being responsive to the timing signals generated by the datum sensors of the first and second base stations, for determining positional angles defined between position lines between the movable sensor and each radiation generator and relating to the datum line by determining the time delays between the receiving of each radiation beam by its datum sensor and by the movable sensor.