振弦式传感器信号采集卡的研制  

Development of Signal Acquisition Card for Vibrating-wire Transducers

作　　者：缪晓中[1] 张为公[2] 

机构地区：[1]无锡职业技术学院电子与信息系,江苏无锡214121 [2]东南大学仪器科学与工程学院,江苏南京210096

出　　处：《仪表技术与传感器》2010年第1期76-79,共4页Instrument Technique and Sensor

基　　金：江苏省汽车工程重点实验室开放基金项目(QC200603);江苏省交通科学研究计划资助项目(06C04);江苏省高校"青蓝工程"优秀青年骨干教师培养对象资助项目

摘　　要：介绍振弦式传感器的数学模型及工作原理,给出了该传感器信号采集卡的设计方案。分析了激振与拾振电路的设计,传感器信号频率的等精度测量电路设计,以及采用CAN总线实现与主控卡相互通信的智能节点设计。该采集卡作为一个嵌入式智能单元,可实现根据不同应用需要与其他传感器采集卡自由组合,构成一个灵活的集成数据采集系统硬件平台。The mathematical model and principle of vibrating-wire transducers were introduced, and the implemental method of signal acquisition card for this sensor was presented. The designs of excitation and detection circuit, equal-accuracy measurement circuit for transducer frequency, intelligent node communicating with main board via CAN - Bus were analyzed. As an embedded in- telligent unit, according to different application requirement, this card can build a flexible hardware platform of integrated acquisition system with other sensor cards.

关 键 词：振弦式传感器 激振 等精度测频 CAN总线 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]