摘要
介绍了某型航空发动机低频、低电压转速信号检测的隔离、滤波放大和波形转换电路及利用单片机AT89C51的外部中断和定时中断测周期、计算转速的方法。该电路经过实际调试,检测精度可以达到1‰,较好地实现了对发动机运行状态的在线监控。
The circuit for the isolation, filtering and amplification of measured speed signal in an aviation engine is introduced here. The sampling time and speed calculation are realized with external and timing interruption in AT89C51. Through the practical experimentation, the testing precision of the circuit can come to 1‰, and it can on line check the states of the engine.
出处
《长春工业大学学报》
CAS
2007年第2期220-223,共4页
Journal of Changchun University of Technology
