Title:
COURSE GUIDING APPARATUS FOR MOVING BODY
Document Type and Number:
Japanese Patent JPS63218816
Kind Code:
A
Abstract:
PURPOSE:To display an accurate running locus by properly confirming timing for re-correcting offset correction, by monitoring the absolute value of a detection value after the correction of a magnetic azimuth sensor and generating an alarm when the variation due to the azimuth of said absolute value is a predetermined level or more. CONSTITUTION:The offset correction and sensitivity correction to the outputs X, Y of a magnetic azimuth sensor 1 are performed by a sensor output correction part 6 and the correction data from the correction part 6 are operated by an absolute value operation part 7 to obtain absolute values. The correction to the correction data X, Y of the correction part 6 is performed by absolute value correction parts 8X, 8Y and the quadrants of the correction data X, Y are judged by a quadrant judge part 13. Further, a clock signal is outputted at every unit running distance of a moving body by a speed sensor 9 and the correction data X, Y corresponding to the clock signal are integrated by an integration part 10. Integration output is successively stored in a locus memory part 11 and the locus of the moving body is displayed on a display 12 to be compared with a reference value and, when the difference is a predetermined value or more, an alarm is generated from a comparing circuit 25.
Inventors:
FUSE MASASHI
HIROCHIKA TAKASHI
TSUSHIMA NOBORU
HIROCHIKA TAKASHI
TSUSHIMA NOBORU
Application Number:
JP25533387A
Publication Date:
September 12, 1988
Filing Date:
October 09, 1987
Export Citation:
Assignee:
ALPS ELECTRIC CO LTD
International Classes:
G01C21/00; G08G1/133; (IPC1-7): G01C21/00
Attorney, Agent or Firm:
Hiroshi Morita