Measuring and testing – Volume or rate of flow – Using differential pressure
Patent
1997-11-25
2000-09-19
Patel, Harshad
Measuring and testing
Volume or rate of flow
Using differential pressure
7320427, G01F 146, G01F 168
Patent
active
061195294
ABSTRACT:
A fluid flow meter is of the type including a heated probe sensor of known electric resistance dipped into or swept by a fluid stream having a predetermined velocity. The sensor is capable of converting each flow velocity value to a voltage value, and is connected to a processor operating using fuzzy logic for producing the flow measurements. The sensor may be an NTC thermistor. The thermistor may be powered from a current generator, and the processor may include a neural network. The sensor may include at least two discrete thermistors, one being a hot thermistor and the other being a cold thermistor.
REFERENCES:
patent: 5311762 (1994-05-01), Drexel
patent: 5390541 (1995-02-01), Feller
patent: 5544079 (1996-08-01), Saikalis
patent: 5553505 (1996-09-01), Bignell et al.
patent: 5595163 (1997-01-01), Nogi et al.
patent: 5764539 (1998-06-01), Rani
Baglio Salvatore
Di Marco Francesco
Graziani Salvatore
Lo Presti Matteo
Galanthay Theodore E.
Patel Harshad
SGS--Thomson Microelectronics S.r.l.
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