| 引用本文: | 严志强,王雨,任开春,刘浏,王永民.基于DSP、CPLD和单片机的高速数据采集装置设计[J].电力自动化设备,2007,27(5):110-113 |
| .High frequency signal sampling device based on DSP, CPLD and SCM[J].Electric Power Automation Equipment,2007,27(5):110-113 |
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| 摘要: |
| 为满足数据采集过程中对频率和分辨率等技术指标方面上的更高要求,设计了一种高速数据采集装置。该装置利用2片A/D芯片将输入的电压、电流模拟信号转换为数字信号,送往复杂可编程逻辑器件(CPLD),并利用2组RAM进行实时存储数据。CPLD产生A/D芯片的控制时序,以及2组RAM的读写控制时序;数字信号处理芯片(DSP)输出控制A/D转换的原始信号,并通过CPLD读写RAM中的采样数据,然后传送给单片机,最后利用单片机的USB接口将采集数据传送给PC机。分析了高速DSP的引导装载过程,并利用单片机实现了DSP程序的引导装载功能。通过在模拟雷击实验和继电器实验中的应用,表明该装置能够提供高速的数据采集和数据传送功能,性能可靠。 |
| 关键词: 数据采集,DSP,CPLD,单片机 |
| DOI： |
| 分类号:TN911.72 |
| 基金项目: |
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| High frequency signal sampling device based on DSP, CPLD and SCM |
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YAN Zhi-qiang WANG Yu REN Kai-chun LIU Liu WANG Yong-min
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| Abstract: |
| A signal sampling device is designed to meet the requirements for higher frequency and resolution.The analog signals of voltage and current are converted into digital signals with two A/D chips,transferred to CPLD(Complex Programmable Logic Device),and stored in two RAM chips.CPLD issues the control timings for A/D chips and RAM chips.DSP(Digital Signal Processor) outputs the original signals to control A/D conversion,reads and writes the sampled data in RAM via CPLD,then transfers them to SCM(Single Chip Micyoco),which transfers the sampled data to PC via USB port.The bootload program of DSP is bootloaded by SCM and the detail is described.Its applications in experiments of thunder-strike simulation and electric relay show its effectiveness and reliability. |
| Key words: data-acquisition,DSP,CPLD,SCM |
