数字频率计的设计(内含原理图、源代码、实物照片)

上传者: tangwa_csdn | 上传时间: 2021-06-02 08:17:20 | 文件大小: 4.92MB | 文件类型: ZIP
利用STC15系列单片机测量100K~100MHZ的正弦波,幅值为10mv~2V。 课题研究目的: 本课题主要研究如何用单片机来设计数字频率计。因为在电子技术中, 频率的测量十分重要,这就要求频率计要不断的提高其测量的精度和速 度。在科技以日新月异的速度向前发展,经济全球一体化的社会中,简 洁、高效、经济成为人们办事的一大宗旨。在电子技术中这一点表现的 尤为突出,人们在设计电路时,都趋向于用竟可能少的硬件来实现,并 且尽力把以前由硬件实现的功能部分,通过软件来解决。因为软件实现 比硬件实现具有易修改的特点,如简单的修改几行源代码就比在印制电 路板上改变几条连线要容易的多,故基于微处理器的电路往往比传统的 电路设计具有更大的灵活性。 因为数字频率计是计算机、通讯设备、音频视频等科研生产领域必不可 少的测量仪器,所以频率的测量就显得更为重要。在数字电路中,频率 计属于时序电路,它主要由具有记忆功能的触发器构成。在计算机及各 种数字仪表中,都得到了广泛的应用。本课题采用的是直接测频式的频 率计,设计原理简单、电路稳定、测量精度高,大大的缩短了生产周 期。

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评论信息

  • uestczg :
    不然不是51啊,
    2018-04-13

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