摘要
介绍了一套湿度传感器的信号处理系统,重点描述了其中的程控增益放大环节,提出了一种具有可对放大器增益进行大范围自动调整的设计方案,该方案可适应信号幅值的大跨度变化,精度高、成本也较为低廉。
This article describes a signal processing system for a humidity sensor. With focusing on the programmable gain amplifying link of it,the article proposes a kind of design which can automatically adjust the gain for amplifier in a wide range. This design is adapted to large span changes of signal amplitude, and its accuracy is high and cost is relatively low.
出处
《绿色科技》
2012年第9期252-255,共4页
Journal of Green Science and Technology
基金
内蒙古自治区自然科学基金项目(编号:2009MS0912)资助
关键词
湿度传感器
程控放大
单片机
humidity sensor
programmable gain amplifying
MCU
