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Charge amplifier, charge amplifier device, and bias electric current compensating manner

机译：电荷放大器，电荷放大器装置及偏置电流补偿方式

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Topic The charge amplifier, the charge amplifier device, and can compensate the influence of bias electric current Ib easily the bias electric current compensating manner which can decrease the measurement drift easily are offered. SolutionsCharge amplifier 101 converts entry electric charge from of piezoelectric sensor Sn to the output voltage which division is done at capacitance C1e of capacitor C1. When bias electric current Ib flows, it converts the sum of bias electric charge and the entry electric charge time integral bias electric current Ib as output voltage. Because output voltage receives the influence of bias electric current Ib, the measurement drift is generated. Compensating electric current Ia through the capacitor C2 where, applied voltage Va is impressed the reversal entry edge (-), flows into entirely as a bias electric current Ib. Charge amplifier 101 converts only entry electric charge to output voltage. Because of this, the measurement drift decreases. Choice figure Drawing 1

机译：<主题>提供了电荷放大器，电荷放大器装置，并且能够容易地补偿偏置电流Ib的影响，提供了能够容易地减小测量漂移的偏置电流补偿方式。解决方案电荷放大器101将来自压电传感器Sn的输入电荷转换为输出电压，该输出电压在电容器C1的电容C1e处完成。当偏置电流Ib流动时，它将偏置电荷的总和与输入电荷时间积分偏置电流Ib转换为输出电压。由于输出电压受到偏置电流Ib的影响，因此会产生测量漂移。通过电容器C2的补偿电流Ia完全流入偏置电流Ib，在电容器C2上施加了施加电压Va的反向进入边缘（-）。电荷放大器101仅将输入电荷转换为输出电压。因此，测量漂移减小。 <选择图>图1

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公开/公告号JP4069158B1

专利类型
公开/公告日2008-04-02

原文格式PDF
申请/专利权人昭和測器株式会社;
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申请/专利号JP20070224443
发明设计人鵜飼俊輔;
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申请日2007-08-30
分类号G01D3/028;G01L1/16;G01P15/09;G01L9/08;G01L9/00;H03F3/70;
国家 JP
入库时间 2022-08-21 20:17:53

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