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Patent Searching and Data


Title:
MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/208561
Kind Code:
A1
Abstract:
A measuring device 20 comprises: a sensor unit 12 that outputs an AC signal having an amplitude corresponding to a physical quantity of a measurement object; a reference signal output unit 15 that outputs a reference signal of which the frequency and the phase are the same as those of the AC signal; a multiplication unit 16 that multiplies the AC signal and the reference signal together; an A/D conversion unit 21 that is disposed before or after the multiplication unit 16; and an integration unit 37 that integrates digital signals outputted from the multiplication unit 16 for a prescribed time period. By use of the measuring device 20, the value of the physical quantity of the measurement object can be measured with a delay of only one cycle relative to the AC signal.

Inventors:
SAWATA, Hideto (1 Nishinokyo-Kuwabara-cho, Nakagyo-ku, Kyoto-sh, Kyoto 11, 〒6048511, JP)
Application Number:
JP2017/010095
Publication Date:
December 07, 2017
Filing Date:
March 14, 2017
Export Citation:
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Assignee:
SHIMADZU CORPORATION (1 Nishinokyo-Kuwabara-cho, Nakagyo-ku Kyoto-sh, Kyoto 11, 〒6048511, JP)
International Classes:
G01N27/06
Foreign References:
JPH08129000A1996-05-21
JP2006112490A2006-04-27
JPS62167456A1987-07-23
JPH02108979A1990-04-20
JPS57166550A1982-10-14
JP2016099207A2016-05-30
Attorney, Agent or Firm:
KYOTO INTERNATIONAL PATENT LAW OFFICE (Hougen-Sizyokarasuma Building, 37 Motoakuozi-tyo, Higasinotouin Sizyo-sagaru, Simogyo-ku, Kyoto-s, Kyoto 91, 〒6008091, JP)
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