Title:
【発明の名称】太陽センサ
Document Type and Number:
Japanese Patent JP2645111
Kind Code:
B2
Abstract:
PURPOSE:To determine the solar optical image center position with high accuracy and with high resolution by eliminating and integrating a DC component from solar light photodetecting output by a linear array sensor, measuring the time required for inverting an integral output by a zero crossing detector and determining the solar light azimuth information. CONSTITUTION:A solar light photodetecting output by a CCD array sensor in which a photoelectric converting element is arrayed in the direction orthogonal to a slit for limiting a solar light luminous flux in the prescribed direction is eliminated as to its DC component by a AC amplifier 13, and thereafter, integrated by an integrator 14. Subsequently, a zero crossing point of this integral output is detected by a zero crossing detector 16 and a latch circuit 18 is controlled, and a time measured value corresponding to an angle of the solar optical image center extending from an integration start to an inversion of an integral value is outputted from a scaler 17 for counting a clock pulse. By this simple constitution, the high accuracy solar optical image center position which is not influenced by optical intensity is determined by high resolution of <= picture elements of the array 45, and the solar sensor can be made small in size and light in weight.
Inventors:
TSUNO KATSUHIKO
Application Number:
JP25879188A
Publication Date:
August 25, 1997
Filing Date:
October 14, 1988
Export Citation:
Assignee:
TOSHIBA KK
International Classes:
G01C1/00; B64G1/36; G01C21/24; (IPC1-7): G01C1/00; B64G1/36; G01C21/24
Attorney, Agent or Firm:
Takehiko Suzue (2 outside)