Detector having self-calibration function
AssigneeHitachi, Ltd.
InventorsSatoshi Shimada, Seiko Suzuki, Shigeki Tsuchitani, Seiichi Ugai, Masayoshi Kaneyasu, Hiroshi Kuroiwa, Yoshihiro Yokota
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Abstract
A detector for detecting a physical quantity as a quantity of electricity has a detection portion, a portion for stimulating the detection portion and a signal processing portion, wherein a calibrating signal is supplied from the signal processing portion to the detection portion via the stimulating portion so as to measure a specific response of the detection portion whereby a self-calibration and a correction of the characteristics are performed in accordance with the amount of the change in the response.
Claims8
A detector system for detecting a physical quantity as a quantity of electricity, comprising:
- detection means for detecting the physical quantity to generate an output;
- means for providing said detection means with a stimulating signal based upon a self-calibration signal for self-calibration of input/output characteristics of said detection means;
- and
- signal processing means operative to supply said self-calibration signal to said stimulating means and to compare said output of said detection means based upon said stimulating signal with predetermined input/output characteristics to thereby correct said output of said detection means on the basis of the results of the comparison.
Dependencies are inferred from the claim text.