| 摘要: |
| 设计了一种基于PIC单片机的测频仪。该系统利用CPLD实现对输入信号频率的等精度测量，利用数字量控制的梯形电阻网络实现系统增益从10～40dB可调、步进为6dB；采用PIC16F877单片机作为系统的控制器，并对增益和频率值进行数字显示。 |
| 关键词: PIC单片机 等精度测量 频率测量 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:March 21, 2006Revised:June 12, 2006 |
| 基金项目: |
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| Design and Realization of a Frequency-measurement Meter Based on PIC Micro-controller |
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| Abstract: |
| A frequency-measurement meter is designed.This system uses CPLD to measure the frequency of the input signal with equal precision.It uses PIC16F877 micro-controller unit as its control part,regulates the system gain from the original 10dB to 40dB gradually(the step is 6dB) with the help of a network composed of digital control trapezium-shaped resistors, and provides digital indications of the system gain and frequency value. |
| Key words: PIC micro - controller equal precision measurement frequency measurement |
