Device for Determining and/or Monitoring the Volume Flow Rate and/or Mass Flow Rate of a Medium to be Measured

摘要

A ultrasonic flow measuring device, which is distinguished by a low energy consumption. A control/evaluation unit ascertains a plurality of sampled values α, with i=1, 2, 3, . . . ) of a received measuring signal at defined points in time (t) of a predetermined time range and interpolates the sampled values by a continuous function (f(t)), wherein the continuous function (f(t)) is formed by a sum of a predetermined number (n ε N) of wavelets (W) and wherein each wavelet (W) corresponds to the product of a sampled value with a sinc function; $$ \left(\frac{\sin \left(x\right)}{x}\right)$$ ;and with a Gaussian bell curve (e^−αχ2, α ε R).