测控技术2017，Vol.36Issue(10)：37-41,5.
用于温湿度信号采集的∑-△型ADC的设计与实现
Design and Realization of ∑-△ ADC for Temperature and Humidity Signals Acquisition
程敏 1王德寿 1习友宝1
作者信息
- 1. 电子科技大学电子工程学院,四川成都611731
- 折叠
摘要
Abstract
It is more convenient for FPGA-based systems to use ∑-△ ADC based on oversampling principle,for the realization of a multi-channel temperature and humidity signal acquisition system in an incubation room.To meet the low cost and low precision requirements of temperature and humidity acquision,the system chooses a first-order ADC,consisting of a low-voltage differential signaling(LVDS) and a cascaded integrator-comb(CIC)filter.The ADC resolution is 12-bit and its conversion time is about 350 μs,so it can be used as a slow signal acquisition universal ADC with accuracy meeting the same type of system indicators.Through ChipScope online debugging and improving the conditioning circuit,the measurement error is further reduced.A high-order ADC can be used to meet the requirement of high-precision multi-class data measurement.The system has the characteristics of strong applicability,low cost,low power consumption and high integration.关键词
过采样原理/FPGA/∑-△模数转换器/多通道数据采集Key words
oversampling principle/FPGA/∑-A ADC/multi-channel data acquisition分类
信息技术与安全科学引用本文复制引用
程敏,王德寿,习友宝..用于温湿度信号采集的∑-△型ADC的设计与实现[J].测控技术,2017,36(10):37-41,5.
