Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
MAGNETISM-DETECTING DEVICE AND MOVING-BODY-DETECTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/073280
Kind Code:
A1
Abstract:
Provided are a magnetism-detecting device and a moving-body-detecting device with which it is possible to detect motion of a moving body that is not a magnetic body. A moving-body-detecting device 1 is provided with a magnetism-detecting device 10 and a rotating element 20 that moves relative to the magnetism-detecting device 10. The magnetism-detecting device 10 has a coil 12 for generating an alternating magnetic field and a magnetic sensor 13 to which the magnetic field generated by the coil 12 is applied. The rotation of the rotating element 20 changes the magnetic field applied to the magnetic sensor 13. An output signal from the magnetic sensor 13 is synchronously detected using a signal that is applied to the coil 12 in order to generate the alternating magnetic field.

Inventors:
TANABE KEI (JP)
Application Number:
PCT/JP2016/079686
Publication Date:
May 04, 2017
Filing Date:
October 05, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TDK CORP (JP)
International Classes:
G01D5/245
Domestic Patent References:
WO2013069524A12013-05-16
Foreign References:
JP2005265790A2005-09-29
JPH01321383A1989-12-27
JP2013160734A2013-08-19
JPS6398501A1988-04-30
JP2006343300A2006-12-21
Attorney, Agent or Firm:
MURAI, Takashi et al. (JP)
Takashi Murai (JP)
Download PDF: