多通道高速遥测采编器的设计  

Design of a multi-channel high-speed telemetry editorial

作　　者：李晓红[1] 

机构地区：[1]太原工业学院电子工程系,山西太原030051

出　　处：《传感器世界》2015年第2期39-44,共6页Sensor World

摘　　要：设计了多通道高速遥测采编器,主要完成对飞行器工作的复杂环境参数的32路模拟量采集和实时显示。系统采用一片ADC分时复用方式,采集数据使用数字滤波-FIR滤波处理,很好的滤除白噪声干扰。ADC选用AD9220,其最大采样率为10Msps,与上位机通信电路采用USB接口芯片的FT232H,其异步FIFO模式最高速率可达8Mbps的传输速率,同时通过工业IOCOMP控件快速绘制实时曲线,避免了采用Line函数绘制曲线的延时问题,实用于高速的数据采集系统。此设计方案可作为一种通用型数据采集系统,适用于不同采样要求。In this paper, a high-speed multi-channel telemetry editorial is desigened, which is used for signal acquisition and real-time display of 32-channel analogue data of complex environmental parameters in aircrafts. The system adopts one-ADC Time Division Multiplex Access （TDMA） to collect data, digital FIR filter to eliminate white noise, an AD9220 as A/D converter with maximum sampling rate of 10Msps, and USB interface chip FT232H to complete communication with host computer with highest transmission rate of asynchronous FIFO mode up to 8Mbps. Being practical for high-speed data acquisition systems, industry IOCOMP control is used to draw real- time curve quickly instead of Line function for avoiding time-delay. This solution can be used as a general- purpose data acquisition system for different sampling requirements.

关 键 词：采编器 FIR滤波 IOCOMP控件 AD9220 FT232H 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]