摘要
在研究粮食的电阻一湿度特性和电阻一温度特性的基础上，设计了采用对数放大器和自动温度补偿功能的信号处理电路，给出了由单片机控制的双积分Ａ／Ｄ转换器．构成了一种性能价格比高的新型粮食湿度测试仪．
On the basis of the results of the research into the characterristic of grain dampresistivity and temperature resistivity,a digital signal processing unit which can do automatic temperature compensation and has a high performance-costs ratio was designed.The logarithmic amplifier and the double integral A/D converter controlled by a single chip microcomputer constitutes a novel humidometer to test grain damp.
出处
《天津大学学报》
EI
CAS
CSCD
1996年第6期976-980,共5页
Journal of Tianjin University(Science and Technology)
关键词
对数放大器
自动温度补偿
粮食
湿度
测试仪
logarithmic amplifier
automatic tempreture compensation
double integral A/D converter
