基于ADuC841的无线应变测试数据采集系统设计  

Design of wireless acquisition system for strain measuring based on ADuC841

作　　者：王华斌[1] 孟立凡[1] 孟凡勇[1] 郝亮[1] 

机构地区：[1]中北大学电子测试技术国家重点实验室信息与通信工程学院,太原030051

出　　处：《电子测试》2009年第8期39-42,共4页Electronic Test

摘　　要：本文主要研究一种应变测试信号采集和对采集后的数据进行无线发送的设计,采用ADuC841单片机和nRF905无线射频芯片来实现。由应变电桥输出的模拟信号,通过放大滤波电路后由ADuC841内部12位高速AD进行采样,然后通过nRF905将采集到的数据发送给接收端,从而实现该系统。通过实验证明该系统可以对模拟信号进行高精度的采集,并能把采集到的数据进行快速无误的发送和接收。该系统主要特点是采用内部集成高精度ADC的ADuC841单片机作为主控芯片,其集成度高,简化了系统结构和电路的设计。The article mainly reseaches the design about strain measuring data acquisition and sending the data , use ADuC841 and nRFg05 to perform it. The analog signal from strain bridge,is sampled after amplifying-filtering circuit by ADuC841 internal high speed 12 bitA/D converter, and is transmitted the sample data to receive terminal by nRF905. Then the system is designed and implemented over. Experiment shows that the system is high-precision to sam- ple analog signal and reliable and fast to send the data to receive terminal. The main feature of this system is to adopt the microprocessor ADuC841 with high-precision ADC in it,it has high level of integration, and simples the structure and the designing circuit of system.

关 键 词：应变测试 无线传输 ADUC841 SPI 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]