| 摘要 |
<p>PURPOSE:To securely detect acceleration by setting the operation reference point of an amplifying means to an operation point where a DC drift is removed by a reference operation point correcting means. CONSTITUTION:Resistances 111 and 112 made of semiconductors are so connected together with resistances 121 and 122 as to constitute a bridge circuit. The output signal of the bridge circuit is supplied to a differential amplifier 13, which outputs a detection signal corresponding to the acceleration. The output signal of the amplifier 13 is amplified by an output amplifier 14 to amplify all frequency components including the drift, and led out as an output. Here, the output of the amplifier 14 cancels an output error due to the DC drift by the feedback system of an operation point correcting circuit 15 at the stop time of an automobile wherein the acceleration need not be measured. The output signal of the amplifier 14 is therefore corrected into an accurate signal accurately corresponding to the acceleration operating on the automobile body.</p> |
