摘要
介绍了以ＡＴ８９Ｃ２０５１单片机为核心的水轮发电机组频率测量系统。该系统采用全浮空双端光电隔离技术， 以及对输入信号正负半周期交替计数方法， 使系统可靠性、信号反应灵敏度大为提高， 并且具有电路简单、通用性强等优点。特别适合于在频率电压变换器、转速继电器以及电气液压型调速器的测频回路中推广应用。
This paper introduces a frequency measurement system based on an AT89C2051 micro controller for hydroelectric generator unit. The technique of photoelectric isolation to the input/output parts and the method of alternate count to the two halves of the periodicity signals are used in the system. Therefore, the system is characterized by high reliability sensitivity of signal reaction, simple structure and wide utility, etc. Also, the system can be widely used in F V convertor, rotating speed relay and electro hydranlic governor.
出处
《西安理工大学学报》
CAS
1999年第4期61-65,共5页
Journal of Xi'an University of Technology
关键词
单片机
频率测量
水轮发电机组
AT89C2051 microcontroler
frequency measurement
hydroelectric generator unit
