摘要
介绍了压电传感器的基本工作原理和基本用途,然后分别介绍了两种前置放大电路。这两种前置放大电路可用以对压电传感器所产生的极其微弱的信号进行直接放大,最后对这两种放大电路的放大原理进行了详细的分析,并通过对比给出了它们的优缺点以及各自所适用的场合。
The basic working principle and basic purpose of piezoelectric sensor are introduced, and two kinds of preamplifiers are described respectively. Both of them are used to amplify the extremely weak signal produced by the piezoelectric sensor. The amplification principles of two kinds of amplifiers are analyzed in detail, and through the comparison of these two amplifiers, their merits and demerits as well as applicable situations are given.
出处
《物联网技术》
2013年第2期27-29,共3页
Internet of things technologies
关键词
压电传感器
电压放大器
电荷放大器
运算放大器
piezoelectric sensor
voltage amplifier
charge amplifier
operational amplifier
