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出願の表示

1. US20120041702 - Moving state detecting device

官庁 アメリカ合衆国
出願番号 13265762
出願日 19.04.2010
公開番号 20120041702
公開日 16.02.2012
特許番号 10012672
特許付与日 03.07.2018
公報種別 B2
IPC
G01P 21/00
G物理学
01測定;試験
P直線速度または角速度,加速度,減速度または衝撃の測定;運動の有無の指示;運動の方向の指示
21このサブクラスの他のグループに包含される装置または器具の試験または較正
G01C 21/16
G物理学
01測定;試験
C距離,水準または方位の測定;測量;航行;ジャイロ計器;写真計量または映像計量
21航行;グループG01C1/00~G01C19/00に分類されない航行装置
10速度または加速度の測定を使用するもの
12航行体上で実施するもの;推測航法
16加速度または速度の積分によるもの,すなわち慣性航行
CPC
G01C 21/16
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
21Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
10by using measurements of speed or acceleration
12executed aboard the object being navigated; Dead reckoning
16by integrating acceleration or speed, i.e. inertial navigation
G01P 21/00
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
21Testing or calibrating of apparatus or devices covered by the preceding groups
出願人 Hiroyuki Toda
FURUNO ELECTRIC COMPANY LIMITED
Ken Yoshitake
発明者 Hiroyuki Toda
Ken Yoshitake
代理人 Studebaker & Brackett PC
優先権情報 2009121375 19.05.2009 JP
発明の名称
(EN) Moving state detecting device
要約
(EN)

To accurately calculate an attached angle of an accelerometer and accurately correct an acceleration that is obtained from the accelerometer: a frequency analyzing module of an acceleration corrector divides a sensor coordinate system acceleration into a bias frequency component, a gravity frequency component, a movement acceleration frequency component, and a noise frequency component, through a wavelet transform. The frequency analyzing module outputs a sum component of the gravity frequency component and the movement acceleration frequency component to an attached angle estimating module and a correcting operation module. The attached angle estimating module estimation-calculates the attached angle of an accelerometer and outputs it to the correcting operation module. The correcting operation module corrects the acceleration, which is including of the sum component of the gravity frequency component and the movement acceleration frequency component, based on the estimation-calculated attached angle to calculate a movable body coordinate system acceleration.