浅析电荷放大器的使用分析  

Analysis of the Use of Charge Amplifiers

作　　者：贾小冬 Jia Xiaodong(Liaoning Institute of Measurement,Shenyang Liaoning 110004)

机构地区：[1]辽宁省计量科学研究院,辽宁沈阳110004

出　　处：《中国仪器仪表》2024年第9期89-92,共4页China Instrumentation

摘　　要：电荷放大器广泛应用于振动、冲击、力、压力、声强等非电量电测。电荷放大器通常具有增益挡位、归一化挡位、滤波挡位和积分挡位,可以针对不同的测量需求,对其各个挡位进行合理的设置,以获得理想的测量结果。在振动冲击领域中,电荷型压电加速度计与电荷放大器配套使用,通过电荷放大器输出的电压信号来获得振动、冲击加速度量值。本文结合振动冲击领域中对电荷放大器的计量特性要求与电荷放大器使用者可能存在的一些操作现象进行讨论,阐述了电荷放大器在不同情况下使用时值得注意的事项,目的在于方便电荷放大器的使用者更加了解其计量特性。Charge amplifiers are widely used in non electrical measurements such as vibration,impact,force,pressure,and sound intensity.Charge amplifiers usually have gain gears,normalization gears,filtering gears,and integration gears,which can be set reasonably for different measurement needs to obtain ideal measurement results.In the field of vibration and shock,charge type piezoelectric accelerometers are used in conjunction with charge amplifiers to obtain vibration and shock acceleration values through the voltage signals output by the charge amplifiers.Based on the requirements for the metrological characteristics of charge amplifiers in the field of vibration and shock,and some possible operational phenomena that may exist among charge amplifier users,this paper discusses the precautions worth noting when using charge amplifiers in different situations,with the aim of facilitating the users of charge amplifiers to better understand their metrological characteristics.

关 键 词：电荷放大器 增益挡 归一化挡 振动套组 冲击套组 

分 类 号：TN722[电子电信—电路与系统]