Method and measuring device for volume measurement and evaluation

A method for measuring a volumetric flow by a volume measurement device, said volume measurement device comprises an electronic circuit and an interpolation factor (IPF1, IPF2, IPF3) that is used for the resolution of the flow quantity (Q) of the fluid to be determined being fitted as a function of the volumetric flow (Q);

• wherein a first signal of a first sensor and a second signal of a second sensor having identical angular frequency ω, which are phase-shifted by 90° relative to one another, and wherein a quadrature signal serves to determine the through-flow (Q) of a fluid in a preferred direction, said method comprising the steps of:
• a) Providing said first and second signals as respective first and second interpolated/digitized signals (S2);
• b) Detecting the flow of the fluid;
• c) Determining the direction of flow of the fluid;
• d) Determining the state of flow of the fluid:
• flowing in the preferred direction, shivering and/or oscillating;
• and
• e) Further conducting the interpolated/digitized signals (S2) as a function of the state of the fluid to an output stage in the form of the quadrature signal, namely:
• (i) In the case of flowing in the preferred direction:
• further conducting the original interpolated/digitized signal (S2);
• and
• (ii) In the case of shivering and/or oscillating:
• changing the interpolated/digitized signal (S2) to a base signal (no movement of the fluid) and further conducting the modified digital signal, which signals no flow (base signal).

A method for measuring a volumetric flow by a volume measurement device, said volume measurement device comprises an electronic circuit;

• wherein a pulse value fitting (S4) of quadrature signals occurs prior to further conduction to the output unit;
• wherein a first signal of a first sensor and a second signal of a second sensor having identical angular frequency ω, which are phase-shifted by 90° relative to one another, and wherein the quadrature signals serve to determine the through-flow (Q) of a fluid in a preferred direction, said method comprising the steps of:
• a) Providing said first and second signals as respective first and second interpolated/digitized signals (S2);
• b) Detecting the flow of the fluid;
• c) Determining the direction of flow of the fluid;
• d) Determining the state of flow of the fluid:
• flowing in the preferred direction, shivering and/or oscillating;
• and
• e) Further conducting the interpolated/digitized signals (S2) as a function of the state of the fluid to an output stage in the form of the quadrature signal, namely:
• (i) In the case of flowing in the preferred direction:
• further conducting the original interpolated/digitized signal (S2);
• and
• (ii) In the case of shivering and/or oscillating:
• changing the interpolated/digitized signal (S2) to a base signal (no movement of the fluid) and further conducting the modified digital signal, which signals no flow (base signal).

A method for measuring a volumetric flow (Q) of a fluid in a preferred direction by a volume measurement device, said volume measurement device comprises an electronic circuit and an incremental encoder;

• wherein a first sinusoidal signal of the incremental encoder, namely a raw sine signal, and a second sinusoidal signal of the incremental encoder having identical angular frequency ω which is phase-shifted by 90° relative to the first sinusoidal signal, namely a raw cosine signal, first conditioned (S1+), and then interpolated/digitized (S2), and these interpolated/digitized signals (S2) are processed and evaluated in an evaluation unit or a process computer unit having a quadrature encoder counter, said the method comprising the steps of:
• a) Detecting the flow of the fluid;
• b) Determining the direction of flow of the fluid;
• c) Determining the state of flow of the fluid:
• flowing in the preferred direction, shivering and/or oscillating;
• and
• d) Further conducting the interpolated/digitized signals (S2) as a function of the state of the fluid to an output stage in the form of a quadrature signal with pulse filtering (S3), namely:
• (i) In the case of flowing in the preferred direction:
• further conducting the original interpolated/digitized signal (S2);
• and
• (ii) In the case of shivering and/or oscillating:
• changing the interpolated/digitized signal (S2) to a base signal (no movement of the fluid) and further conducting the modified digital signal, which signals no flow (base signal).