压电晶体传感器阵列测定装置及数据采集系统

Computer Controlled Measurement and Data Acquisition System for Piezoelectric Crystal Sensor Array

研究了一种利用微机控制测量和采集压电晶体传感器阵列振荡频率的智能型仪器。介绍了其硬件及数据采集系统软件的功能、结构等。本仪器精度高，稳定性好，阵列中晶体个数可在１～１２间改变，可实现在线观察频率变化，且数据可存储，为应用传感器阵列进行混合物测定、复杂物质分类及观察响应信号的动力学变化提供了有力的测定手段。

A computer controlled intelligent measurement and data acquisition system for piezoelectric crystal sensor array was studied. The function and structure of the hardware and the software for data acquisition were introduced. This instrument has high precision and stability. The number of piezoelectric crystal sensors measured can be varied from one to twelve. The on-line observation of frequency shift may be completed, and the data of fre- quency shifts can be saved for later treatment. This instrument provides a strong tool for mixture determination, complex substances classification with piezoelectric crystal sensor ar- ray or kinetic frequency signal observation for piezoelectric crysta1 sensor. It is of great use for analytical chemistry.