Title:
CONTROLLER AND OPTICAL INTERFEROMETRIC RANGING SENSOR
Document Type and Number:
WIPO Patent Application WO/2024/070430
Kind Code:
A1
Abstract:
The present invention reduces deviation in sampling timing. A controller (110) is connected, via an optical fiber cable (130), to each of a first sensor head (121) and a second sensor head (122) that irradiate an object to be measured with light. The controller (110) is provided with: a light source (140); a first main interferometer (151) that generates a first main interference signal; a second main interferometer (152) that generates a second main interference signal; and a sub-interferometer (160) that generates a sub-interference signal. The controller (110) is further provided with: a first correction signal generation unit (171) that generates a first correction signal; a delay amount generation unit that generates a delay amount based on an optical path length difference between an optical path length of a first optical fiber (131) and an optical path length of a second optical fiber (132); and a second correction signal generation unit (172) that generates, on the basis of the sub-interference signal and the delay amount, a second correction signal for correcting a sampling period of the second main interference signal.
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Inventors:
KIMURA KAZUYA (JP)
NAGASAKI YUSUKE (JP)
NAGASAKI YUSUKE (JP)
Application Number:
PCT/JP2023/031329
Publication Date:
April 04, 2024
Filing Date:
August 29, 2023
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO (JP)
International Classes:
G01B9/02004; G01B9/02055; G01B11/00
Foreign References:
| JP2012198230A | 2012-10-18 | |||
| JP2021143938A | 2021-09-24 | |||
| JP2017181115A | 2017-10-05 | |||
| JP2021143995A | 2021-09-24 | |||
| US20210356249A1 | 2021-11-18 | |||
| JP2023132738A | 2023-09-22 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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