Title:
DEVICE FOR DETECTING ATTITUDE ANGLE
Document Type and Number:
Japanese Patent JP3797661
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a device for detecting attitude angle which eliminates the burden of bothersome work and automatically correct an error in the component Mz in the Z-direction of an imaginary magnetism.
SOLUTION: The device is composed of a gyro which detects the angular velocity, an acceleration sensor which detects the acceleration of two axes, a magnetic sensor which detects terrestrial magnetism in two axes, an EEPROM 25 which stores the offset voltage value and the sensitivity of each sensor, a motion angle detector 26a which calculates the motion angle per unit time based on the output from the gyro and the data stored in the EEPROM25, a stationary angle calculating device 26b which calculates the angle of rotation about the Y-axis and the Z-axis based on the angle of depression of the terrestrial magnetism, the data stored in the EEPROM25 and the outputs from the acceleration sensor and the magnetic sensor, a device for automatically correcting angle of depression 28 which automatically corrects the error of the angle of depression of the terrestrial magnetism, a decision device 27 which decides the truth of the result calculated by the stationary angle calculating device 26b, and a device for calculating attitude angle which calculates the attitude angle in accordance with the decision of the decision device 27.
Inventors:
Kato Muto
Application Number:
JP2001362582A
Publication Date:
July 19, 2006
Filing Date:
November 28, 2001
Export Citation:
Assignee:
NEC TOKIN CORPORATION
International Classes:
G01C21/10; G01C21/18; G01C15/00; G01C21/08; (IPC1-7): G01C21/10; G01C15/00; G01C21/08
Domestic Patent References:
| JP11211474A | ||||
| JP10160474A | ||||
| JP2000148379A | ||||
| JP9152337A |