Measurement value detection and processing unit for small...

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G01R 19/00 (2006.01) G01D 3/02 (2006.01) G01D 18/00 (2006.01) G01R 35/00 (2006.01)

Patent

CA 2440774

The invention relates to a measured value acquisition and processing unit (5) that facilitates the acquisition and processing of very small measuring signals in the range of interfering signals, such as, for example, noise, spillovers, etc. This means that the useful values to be detected usually contain interfering portions. The inventive measured value acquisition and processing unit (5) separately acquires these interfering portions by means of a switch element (10) disposed in the area of feed of the measured signals by means of which the measuring circuit is short-circuited in such a manner that the measured signal is not coupled in but only interfering signals that might occur in the measuring circuit are detected. The inventive method provides a large range of dynamic ratio for the detection of measured values at low costs.

Unité de détection et de traitement (5) de valeurs de mesure permettant la détection et le traitement de très petits signaux de mesure qui se situent dans la plage des signaux parasites, par ex. les bruits de fond, le surcouplage, etc. Cela signifie que les valeurs utiles à détecter sont normalement entachées de composantes parasites. L'unité de détection et de traitement (5) de valeurs de mesure selon la présente invention permet la détection séparée des composantes parasites du fait qu'un élément de commutation (10) est placé dans la zone d'introduction du signal de mesure. Le circuit de mesure est mis en court circuit à l'aide dudit élément de commutation de manière telle que l'injection du signal de mesure ne se produit pas et que seuls les signaux parasites présents apparaissent dans le circuit de mesure et sont détectés par ce dernier. Il est ainsi possible d'obtenir à faible coût une large plage dynamique lors de la détection de valeurs de mesure.

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