Title:
METHOD AND MEASURING DEVICE FOR VOLUME MEASUREMENT AND EVALUATION
Document Type and Number:
WIPO Patent Application WO/2012/065883
Kind Code:
A3
Abstract:
The invention relates to a method for measuring the volumetric flow (Q) of a fluid in a preferred direction by means of a volume measurement device with an electronic circuit and an incremental encoder, a sensor for detecting a rotational change of angle, preferably designed as two giant magnetoresistance (GMR) sensors in a double measuring bridge, wherein a first sinusoidal signal of the incremental encoder (102), namely a raw sine signal (S1), and a second sinusoidal signal of the incremental encoder (102) with identical angular frequency ω which is phase-shifted by 90° relative to the first signal (S1), namely a raw cosine signal (S1), are generated, wherein said signals are preferably initially conditioned (103, S1+), interpolated/digitised (104, S2), and said digital signals (S2) are processed and evaluated in an evaluation unit, preferably in a process computer unit having a quadrature encoder counter (108). The invention further relates to a method for measuring a volumetric flow by means of a quadrature signal, comprising a first signal from a first sensor and a second signal from a second sensor having identical angular frequency ω which are phase-shifted by 90° relative to one another, wherein the quadrature signal serves to determine the flow (Q) of a fluid in a preferred direction by a volume measurement device with an electronic circuit. The invention further relates to a volume measurement device for carrying out a measurement method and to a programmable process computer unit having at least one quadrature encoder interface/quadrature encoder counter (108) for use in a volume measurement device for measuring a volumetric flow.
Inventors:
KIRCHERTZ JOERG (DE)
Application Number:
PCT/EP2011/069674
Publication Date:
August 16, 2012
Filing Date:
November 08, 2011
Export Citation:
Assignee:
VSE VOLUMENTECHNIK GMBH (DE)
KIRCHERTZ JOERG (DE)
KIRCHERTZ JOERG (DE)
International Classes:
G01F3/10; G01D5/244
Domestic Patent References:
| WO2005119185A1 | 2005-12-15 | |||
| WO2006131134A1 | 2006-12-14 |
Foreign References:
| US20020035441A1 | 2002-03-21 | |||
| EP0853231A2 | 1998-07-15 | |||
| DE19703243A1 | 1998-07-30 |
Attorney, Agent or Firm:
EINSEL, Martin (Jasperallee 1a, Braunschweig, DE)
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