CAJ | 학술논문

针对大学物理实验中的压力传感器特性测量实验存在测量精确度低、计算复杂、特性描述差等问题，文章基于单片机控制与计算机分析相结合的方案，设计了压力传感器特性测量实验系统。通过利用精密仪表放大器 AD620、模数转换器 ADC0809、MCS －51单片机和电平转换电路 MAX232等构成的主体电路采集压力非平衡电桥的电压值，采用计算机对数据进行处理分析，从 VB 编译的人机交互界面中得到传感器灵敏度，非线性度及滞后误差等特性结果。此系统测量压力传感器特性的准确率更高，特性曲线更直观。
침대대학물리실험중적압력전감기특성측량실험존재측량정학도저、계산복잡、특성묘술차등문제，문장기우단편궤공제여계산궤분석상결합적방안，설계료압력전감기특성측량실험계통。통과이용정밀의표방대기 AD620、모수전환기 ADC0809、MCS －51단편궤화전평전환전로 MAX232등구성적주체전로채집압력비평형전교적전압치，채용계산궤대수거진행처리분석，종 VB 편역적인궤교호계면중득도전감기령민도，비선성도급체후오차등특성결과。차계통측량압력전감기특성적준학솔경고，특성곡선경직관。
The original experimental instrument for measuring the pressure transducers characteristicshave some problems,such as low accuracy,complexity and poor description.Based on singlechipmicrocomputer and computer analysis, a system for measuring the characteristics of pressuretransducer is designed.The main circuit consists of precision instrument amplifier AD620,ADC0809,MCS51 SCM and MAX232 etc.By collecting the voltage of nonbalanced electric bridge andanalyzing the data by computer,characteristic results such as sensitivity,linearity and hysteresis errorwill show up in the computer interface which is compiled by VB.Results show that the system cangive higher accuracy and more intuitive characteristic curve.