高精度数字式移相信号发生器的研制

Digital shifting phase signal generator

介绍研制的一个综合利用单片机、CPLD、数字、模拟电路技术实现的智能仪表系统。由单片机采集频率和相差预置数据并处理,由CPLD实现频率和相差的预置。系统中各种测量数据和参数通过液晶显示屏显示,并且扩充了日历、时间和掉电保护装置,增强了人机界面的友好性。系统采用最佳方案,实现了CPLD与单片机及其它元器件功能上的互补,且具有较强的稳定性和抗干扰性能。

This system is an intelligent instrument,which uses CPLD,MCU,with digital circuitry and analog circuitry to make measure precision of phase and frequency beyond demand of design. All kinds of measurement data and parameters in this system can be displayed through the LCD. LCD's extended function is that display calendar and time and it can work if the system's power is lost. All these functions added friendly capability of man-machine interface. This system adopts the best plan so it can overcome disadvantages of CPLD and MCU and other electron elements functions. and accomplishes the desire of design and beyond it,and has good stabilization and anti-jamming function.