By using integrated high the speed A/ D converter, the CAN-bus controller on DSP and its powerful ability, the system has the high performance-cost ratio. 充分利用DSP芯片内部的高速A/D、CAN总线接口及其强大处理能力,使该系统具有很高的性价比。
A muti-channel data acquisition based on dual integration A/ D converter is designed using CPLD the crux. The implementation of sampling controller unit, counter unit and serial interface output unit is detailed introduced. 利用CPLD作为控制核心,设计一个基本双积分A/D转换器件的多路数据采集系统,详细分析A/D采样控制模块、计数模块、串口数据发送模块的实现。
The paper introduces a kind of micro-sized instrumentation made up of a senser, adaptive amplifier, A/ D converter, memory, controller, interface circuit and a power source. 介绍一种由传感器、适配放大器、A/D变换器、存储器、控制器、接口电路和电池组成的微型测试仪器。
According the principle of random sampling, we have realized to measure high frequency repeated signal by lower frequency A/ D converter and logic controller. 本课题采用了随机采样的原理,用低速A/D转换器及控制器进行模数转换和控制,实现了对高频率的重复信号进行测量,有利于降低成本。