The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 2016
Filed:
Jan. 30, 2014
Sumitomo Precision Products Co., Ltd., Amagasaki-shi, Hyogo, JP;
Takafumi Moriguchi, Amagasaki, JP;
SUMITOMO PRECISION PRODUCTS CO., LTD., Hyogo, JP;
Abstract
A direction detector that allows true north detection accuracy to be improved is provided. In a direction detector, an attitude changerrotates an angular velocity sensoraround a detection axis and controls an attitude of the angular velocity sensorso that the detection axis is directed in a predetermined measuring direction and an opposite direction to the predetermined measuring direction. A control devicecontrols the attitude changerso that the angular velocity sensorrotates in a first rotation direction around the detection axis before the angular velocity sensorstarts to detect an angular velocity around the predetermined measuring direction. The control devicecontrols the attitude changerso that the angular velocity sensorrotates in a second rotation direction opposite to the first rotation direction around the detection axis and, thereafter, the angular velocity sensorrotates in the first rotation direction around the detection axis before the angular velocity sensorstarts to detect an angular velocity around the opposite direction.