摘要
由电容测量电路和８９Ｃ５１单片机控制系统结合组成１１８路高分子电容式湿敏元件自动测量仪，通过对电路采取多路电容公共连接点接大地、温度补偿和提高振荡频率等措施后，测量绝对精度可达±０．０４ｐＦ．
s The combination of condenser measurment circuit with 89C51 microcontroller forms 118 high polymer condenser humidity sensors automatic measuring instrument. By connecting the public point of multi_channel condenser to earth wire, revising temperature and increasing the oscillating frequency, it can limit the absolute measuring precision to ±0.04 pF.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1999年第3期124-128,共5页
Journal of South China University of Technology(Natural Science Edition)
