Title:
The non-contact flow measurement system by a Doppler sensor
Document Type and Number:
Japanese Patent JP6254049
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a non-contact flow measurement system using a Doppler sensor capable of easily obtaining an instantaneous flow.SOLUTION: A non-contact flow measurement system 100 using a Doppler sensor 1 for measuring a flow of a fluid discharged from a discharge port with the Doppler sensor 1, includes: storage means that stores a Doppler shift component obtained from the Doppler sensor 1 as digital data by sequential analog-to-digital conversion with an A/D converter; zero-cross detection means that detects the number of zero crosses from a Doppler shift component amount of the digital data; zero-cross number counting means that counts the number of zero crosses for each fixed interval; and a flow conversion table that converts the flow into a predetermined instantaneous flow in accordance with the number of zero crosses of the zero-cross number counting means.
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Inventors:
Mitsuhiro Takayama
Fumihiro Horiuchi
Fumihiro Horiuchi
Application Number:
JP2014138100A
Publication Date:
December 27, 2017
Filing Date:
June 17, 2014
Export Citation:
Assignee:
Digital Spice Co., Ltd.
International Classes:
G01F1/66; A61B5/20; G01P5/24
Domestic Patent References:
| JP5553315B2 | ||||
| JP5749147Y2 |
Foreign References:
| US4122713 |