| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a physical quantity detection apparatus and a physical quantity detection system, capable of regulating a zero-point voltage, using a simple configuration. <P>SOLUTION: The physical quantity detection apparatus is an angular velocity detecting apparatus 1 (one example of the physical quantity detection apparatus) for detecting angular velocity (one example of a prescribed physical quantity) and includes both a sensor section 50 for outputting output voltage signals, according to the angular velocity and a zero-point voltage regulating section 60 for regulating and outputting a zero-point voltage of the output voltage signals. The zero-point voltage regulating section 60 includes a voltage-holding section 200 for holding a voltage of the output voltage signals of the sensor section 50 for a prescribed period; a differential voltage output section 210 for outputting a differential voltage between the voltage held by the voltage-holding section 200 and a reference voltage; and an offset voltage cancel section 220 for canceling the offset voltage of the output voltage signals, on the basis of the differential voltage. <P>COPYRIGHT: (C)2011,JPO&INPIT |
