摘要
介绍了小电容量的电容传感器信号调理的一种新方法。利用最新的可编程电容电压转换集成电路XE2 0 0 4 ,充分考虑小电容信号受引线电容以及其它寄生电容的影响 ,辅以单片机的数字化修正 ,设计了基于XE2 0 0 4的信号调理电路。详细介绍了XE2 0 0 4的校准方法。
A new method of sensing signal conditioning for small capacitance transducer is introduced. By using the latest programmable capacitance/voltage converting integrated circuit, XE2004, and fully considering the influence of lead capacitance and parasitic capacitance to small sensing signal, digitized correction with single chip computer is added. The signal conditioning circuit based on XE2004 is designed and the calibration method of XE2004 is introduced in detail.
出处
《自动化仪表》
CAS
2005年第3期31-32,35,共3页
Process Automation Instrumentation
