Title:
SELF-POSITION RECOGNITION SYSTEM
Document Type and Number:
Japanese Patent JPH0385403
Kind Code:
A
Abstract:
PURPOSE:To enable accurate calculation of self-position even when a long-time operation is conducted, by measuring the self-position of a moving object in real time by a rotary encoder, a magnetic azimuth sensor, a gyro, etc. and by conducting resetting by an automatic three-dimensional position measuring device at every prescribed time wherein an error is accumulated and increased. CONSTITUTION:A rotary encoder 3 generates a pulse signal for a coordinates computation unit 8 with the rotation of a running roller. A gyro 4 measures an angle 10 of inclination of a moving object and transmits a digital signal to the unit 8. Moreover, a magnetic azimuth sensor 5 transmits an azimuth angle 9 of a moving object with a digital signal to an azimuth modifier 7. A gyro 6 also transmits an azimuth angle 9 to the modifier 7 with the digitalsignal. The azimuth angle informations of the sensor 5 and the gyro 6 are analyzed in the modifier 7 and convergence is made to the azimuth angle information of the gyro 6 when a large error occurs due to disturbance of geomagnetism. Next, the modifier 7 transmits the azimuth angle information to the unit 8 with the digital signal. Then, resetting is conducted at every prescribed time by an automatic three-dimensional position measuring device 15 and thus measurement of high precision is executed.
Inventors:
KOUTSUKA MITSUHIDE
OKANO MIKIO
SUGIHARA SHIGEKI
OKANO MIKIO
SUGIHARA SHIGEKI
Application Number:
JP22170189A
Publication Date:
April 10, 1991
Filing Date:
August 30, 1989
Export Citation:
Assignee:
FUJITA CORP
International Classes:
G01C21/00; G01B11/00; G06T1/00; (IPC1-7): G01B11/00; G01C21/00; G06F15/62
Domestic Patent References:
| JPS5816283A | 1983-01-29 |
Attorney, Agent or Firm:
Shigefumi Okamoto (1 person outside)
Next Patent: JPH0385404