基于硅光电池的电荷放大器性能测试信号发生器  

Silicon Photocell Based Signal Generator for Performance Testing of Charge Amplifier

作　　者：薛婧[1] 李斌[1] 

机构地区：[1]上海大学机电工程与自动化学院,上海200072

出　　处：《仪表技术与传感器》2009年第7期60-62,共3页Instrument Technique and Sensor

摘　　要：通过对电荷放大器的理论分析和硅光电池的特性测试,利用硅光电池具有与压电晶体传感器高内阻、小功率,电荷量输出相似的特性,提出了利用硅光电池组成用于测试电荷放大器性能的信号发生器,提高了测试电荷放大器频率响应特性的准确性。并将其应用于涡街流量计中进行实验,实验结果比对证明了该信号发生器的有效性和实用性。A kind of signal generator based on silicon photocell for testing performance of charge amplifier was put forward by researching the principle of charge amplifier and testing the characteristic of silicon photocell, and by making use of the similar characteristics of silicon photocell with piezoelectric sensor of high internal resistance, low power and charge output, which can im- prove the veracity of testing frequency response properties of charge amplifier. Then this kind of signal generator is operated in vortex flowmeter for tests whose results by comparison show its validity and practicability.

关 键 词：电荷放大器 硅光电池 压电传感器 频率响应特性 涡街流量计 

分 类 号：TP206[自动化与计算机技术—检测技术与自动化装置]