PHYSICAL QUANTITY DETECTION CIRCUIT AND PHYSICAL QUANTITY SENSOR DEVICE

A physical quantity detection circuit (12) is used for a physical quantity sensor (10) that outputs a sensor signal according to a physical quantity given externally. In the physical quantity detection circuit (12), an analog-to-digital converter (104) converts an analog sensor signal (Ssnc) to a di...

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Bibliographische Detailangaben
Hauptverfasser:	INUKAI FUMIHITO, KAINO YOICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGUE COMPUTERS BASIC ELECTRONIC CIRCUITRY CALCULATING COMPUTING COUNTING ELECTRICITY GYROSCOPIC INSTRUMENTS INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS PULSE TECHNIQUE SURVEYING TESTING
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Beschreibung
Zusammenfassung:	A physical quantity detection circuit (12) is used for a physical quantity sensor (10) that outputs a sensor signal according to a physical quantity given externally. In the physical quantity detection circuit (12), an analog-to-digital converter (104) converts an analog sensor signal (Ssnc) to a digital sensor signal (Dsnc). A digital filter (100) attenuates a frequency component of the digital sensor signal (Dsnc) that is higher than a predetermined cutoff frequency. A multiplier (106) multiplies a digital sensor signal (Dps) having passed the digital filter (100) by a digital detection signal (Ddet) to detect a digital physical quantity signal (Dphy).