交流电压与频的率测试仪.doc

摘要
随着信息化､数字化在各行各业地迅猛发展,工业系统中地信息化､数字化也将成为未来地发展趋势尤其在狭小地空间操作时,经常要面对功能众多､大小不等､量程各异地仪表盘,这些仪表盘不仅占用空间,而且不够直观,容易造成工作人员地误操作或反应滞后,给操作带来不必要地麻烦因此利用交流电频率､电压测量地技术,设计出电压频率测试系统,可以简化系统地操作空间,提高工作效
本设计以单片机AT89C52为核心,结合外围信号放大､整形电路,通过对输出波形地计数和对模拟电压地采样､量化得到交流电频率和电压地数字量,将所得数据通过串行接口发送到上位机进行直观显示,很好地实现l对系统电压频率地测量设计结构简单､测量误差小,具有很高地实用价值
关键词:单片机;频率;电压;采样;AT89C52;AD0809;
Abstract
With digital informatization in the rapid development of all walks of life, industrial system of informatization, digital will also e the future trend of development. Especially in the narrow space when operating, often face many functions, sizes, different range instrument panel. These instrument panel not only occupy a space, and not enough intuitive, easy to cause the working staff of the incorrect operation or reaction lag, give operating cause unnecessary trouble. So using AC frequency and voltage measurement technology, design the voltage frequency monitoring system, may simplify system operation space, improve work efficiency.
This design taking single puter AT89C52 as a bining the periphery signal to enlarge and the shaping circuit, through to the output waveforms of the count and the simulated voltage sampling, the quantitative get ac frequency and voltage the digital quantity. These data are sent to the puter by a series port and visual display,realizing the monitoring of the frequency and voltage. Design is simple in structure, measurement error small, has high practical value.
Keywords:single puter;frequency;voltage;sampling;AT89C52;AD0809;
目录
1绪论 1
1
1
1
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1
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2系统概述 3
3
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5
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3系统硬件电路地设计 7
7
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4系统控制软件设计 19
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总结体会 25
致谢 27
参考文献 28