声表面波压力传感器信号采集与处理  

Data Acquisition and Signal Processing of SAW Pressure Sensor

作　　者：许海岗[1] 陈明[1] 黄国刚[1] 李锋垚[1] 何鹏举[1] 

机构地区：[1]西北工业大学,陕西西安710072

出　　处：《航空计测技术》2004年第3期13-17,共5页Aviation Metrology & Measurement Technology

摘　　要：声表面波 (SAW)传感器能将被测量转换成容易检测的频率信号 ,即一种准数字信号的输出。针对 SAW压力传感器 (以 CSF- 1 0型 SAW压力传感器为对象 )的输出特点 ,利用等精度频率测量法测量输出频率 ,并用 Dallas的单线数字温度传感器 DS1 8B2 0测出现场温度 ,采用The surface acoustic wave(SAW) sensor can transform the measured object into frequency output, viz a kind of digital signal output. Point to the characteristic of SAW pressure sensor, using the method of equally accurate frequency measurement outputs the frequency. The Back Propagation(BP)neural network is adopted to compensate the effect of field temperature, which is measured by DS18B20. The solution presented in this paper produces more accurate pressure measurement than the traditional method.

关 键 词：声表面波 压力传感器 信号采集 信号处理 BP神经网络 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TP274[自动化与计算机技术—控制科学与工程]