CAJ | 학술논문

设计了一种基于电容数字转换芯片AD7745和单片机C8051F040微位移检测信号处理电路,给出了电容式微位移传感器的设计制备原理、C8051F040软硬件设计、输出转换电路的设计, 阐述了微位移检测电路信号提取及转换过程.实验结果表明:设计的微位移信号处理电路提高了厚膜微位移电容传感器的稳定性及抗干扰能力,并使传感器在量程100 μm的范围内线性度由6.10%提高到0.67%.
설계료일충기우전용수자전환심편AD7745화단편궤C8051F040미위이검측신호처리전로,급출료전용식미위이전감기적설계제비원리、C8051F040연경건설계、수출전환전로적설계, 천술료미위이검측전로신호제취급전환과정.실험결과표명:설계적미위이신호처리전로제고료후막미위이전용전감기적은정성급항간우능력,병사전감기재량정100 μm적범위내선성도유6.10%제고도0.67%.
A kind of micro-displacement detection signal processing circuit based on 24 bit capacitance-to-digital converter AD7745 and singlechip C8051F040 was designed. The producing principle of capacitive micro-displacement sensor, signal acquisition and conversion of system were presented. The results show the linearity of sensor is improved from 6.10% to 0.67% and the stability and capacity of resisting disturbance are enhanced based on this circuit.