电容式传感器性能参数的虚拟标定方法  

Virtual calibration method of performance parameter for capacitive sensor

作　　者：宋丽梅[1] 李斐[1] 余朋清[2] 孙双花[1] 郑义忠[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072 [2]江苏大学机械学院微纳米中心,江苏镇江212013

出　　处：《传感器技术》2003年第7期74-76,共3页Journal of Transducer Technology

摘　　要：图形化软件(LabView)是虚拟现实技术在自动化、测试仪器仪表行业中的应用,是对传统仪器概念的重大突破。电容式测微仪将位移的微变转换为电压的微变,通过A/D采集板(ZTIC8310)将电压的微变传入计算机,然后利用LabView软件中的虚拟仪器模块对逐次采集的信号进行计算,按照不同的评价原理自动得到性能参数,如:线性度,分辨力等。通过虚拟仪器进行的参数标定是评价真实仪器性能指标的有力证明。论述了虚拟仪器LabView对真实仪器的标定原理及方法。LabView has been widely used in automatization and measurement instrument.It has a lot of merits compared with traditional instrument.Change of displacement can be converted to voltage by capacitive precisionmeasured instrument.And voltage is easy to be transferred to computer by A/D card ZTIC8310.Multi voltages of different distance can be computed by virtual instrument in LabView and calibration arguments will be got through different formula,such as linearization,and resolving power,etc.These arguments can give exact evaluation to capacitive precisionmeasured instrument.Calibration principle and method of true instrument by virtual instrument are illustrated by follow.

关 键 词：电容式传感器 性能参数 虚拟标定方法 图形化软件 LABVIEW 线性度 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]