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1. WO2020110253 - SINE WAVE NOISE REMOVAL DEVICE AND SINE WAVE NOISE REMOVAL METHOD

Publication Number WO/2020/110253
Publication Date 04.06.2020
International Application No. PCT/JP2018/043945
International Filing Date 29.11.2018
IPC
G01D 3/032 2006.01
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
3Measuring arrangements with provision for the special purposes referred to in the subgroups of this group
028mitigating undesired influences, e.g. temperature, pressure
032affecting incoming signal, e.g. by averaging; gating undesired signals
CPC
G01D 3/032
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
3Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
028mitigating undesired influences, e.g. temperature, pressure
032affecting incoming signal, e.g. by averaging; gating undesired signals
Applicants
  • 理化工業株式会社 RKC INSTRUMENT INC. [JP]/[JP]
Inventors
  • 新井 貴司 ARAI, Takashi
  • 林 成光 HAYASHI, Masamitsu
  • 西岡 渉 NISHIOKA, Wataru
  • 堀岡 憲嗣 HORIOKA, Noritsugu
  • 島田 昌士 SHIMADA, Masashi
Agents
  • 加藤 公延 KATO, Masanobu
  • 押野 宏 OSHINO, Hiroshi
  • 永田 豊 NAGATA, Yutaka
  • 大島 孝文 OSHIMA, Takafumi
  • 福川 晋矢 FUKUKAWA, Shinya
  • 太田 司 OTA, Tsukasa
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SINE WAVE NOISE REMOVAL DEVICE AND SINE WAVE NOISE REMOVAL METHOD
(FR) DISPOSITIF ET PROCÉDÉ D'ÉLIMINATION DE BRUIT D'ONDE SINUSOÏDALE
(JA) 正弦波ノイズ除去装置及び正弦波ノイズ除去方法
Abstract
(EN)
This sine wave noise removal method is characterized by comprising a sine wave noise removal step (S405) in which a signal containing sine wave noise is measured at a pair of measurement points where the sine wave noise cancels itself out (S408-S402) and a signal value bn having the sine wave noise removed therefrom is calculated from the moving average of the measurement values that have been measured, and a step in which a signal value cn is calculated through the use of a prescribed formula (S407) to carry out lag compensation processing on signal values obtained in the sine wave noise removal step.
(FR)
Ce procédé d'élimination de bruit d'onde sinusoïdale est caractérisé en ce qu'il comprend une étape d'élimination de bruit d'onde sinusoïdale (S405) dans laquelle un signal contenant un bruit d'onde sinusoïdale est mesuré à deux points de mesure où le bruit d'onde sinusoïdale s'annule (S408-S402) et une valeur de signal bn dont le bruit d'onde sinusoïdale est éliminé est calculée à partir de la moyenne mobile des valeurs de mesure qui ont été mesurées, et une étape dans laquelle une valeur de signal cn est calculée grâce à une formule prédéterminée (S407) pour effectuer un traitement de compensation de décalage sur les valeurs de signal obtenues dans l'étape d'élimination de bruit d'onde sinusoïdale.
(JA)
正弦波ノイズが乗っている信号に対し、前記正弦波ノイズが相互に打ち消される測定点のペアにおいて前記正弦波ノイズが乗っている信号を測定し(S408~S402)、当該測定した測定値の移動平均により、正弦波ノイズを除去した信号値bを算出する正弦波ノイズ除去ステップ(S405)と、所定の計算式(S407)に基づいて、前記正弦波ノイズ除去ステップによって得られた信号値の遅れ補償処理を行った信号値cを算出するステップと、を有することを特徴とする正弦波ノイズ除去方法。
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