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POSITION DETECTING SYSTEM AND POSITION DETECTING METHOD
专利权人:
Olympus Corporation
发明人:
UCHIYAMA, Akio,SATO, Ryoji,KIMURA, Atsushi,KARASAWA, Ryo
申请号:
EP08752052
公开号:
EP2149327A4
申请日:
2008.04.24
申请国别(地区):
EP
年份:
2017
代理人:
摘要:
The position or the direction of a first marker which produces an alternating magnetic field by means of an external power supply is detected precisely even if the first marker coexists with a second marker which includes a resonance circuit having a resonance frequency the same as or close to the frequency of the alternating magnetic field. There is provided a position detection system (1) including a first marker (4) that produces a first alternating magnetic field having a single set of first position-calculating frequencies that are a predetermined frequency away from each other a second marker (3) provided with a magnetic induction coil (5) having as a resonance frequency a substantially central frequency interposed between the single set of first position-calculating frequencies a magnetic-field detection section (13) that is disposed outside the working region and that detects a magnetic field at the first position-calculating frequencies an extracting section (30) that extracts from the detected magnetic field the sum of the intensities of a single set of first detection-magnetic-field components having the single set of first position-calculating frequencies and a position/direction analyzing section (22) that calculates the position or the direction of the first marker (4) based on the extracted sum.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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