Title:
コンパス測定のモータ磁気擾乱を補償するシステム及び方法
Document Type and Number:
Japanese Patent JP2006519981
Kind Code:
A
Abstract:
A method for correcting a vehicle compass measurement for an interfering magnetic field generated by a vehicle accessory, where the interfering magnetic field has an intensity sufficient to cause a compass measurement error, includes monitoring the operation of the vehicle accessory and detecting a characteristic of operation of the vehicle accessory. A measurement or timing signal is then generated based on the characteristic of operation. A magnetic field for direction is measured in response to the measurement signal and an offset or correction value is determined based at least one the measured magnetic field and the characteristic of operation of the vehicle accessory.
Inventors:
Olson, Thomas Earl.
Wickowski, Todd Earl.
Wright, Thomas S.
Wickowski, Todd Earl.
Wright, Thomas S.
Application Number:
JP2006501189A
Publication Date:
August 31, 2006
Filing Date:
February 24, 2004
Export Citation:
Assignee:
Johnson Controls Technology Company
International Classes:
G01C17/38; G01D13/22
Attorney, Agent or Firm:
Hidekazu Miyoshi
Masakazu Ito
Masakazu Ito