摘要
针对原有柴油发电机组的专用控制器功能单一、集成度低、测量精度和响应速度低等问题,设计了一款基于PIC24F的柴油发电机检测与自动化系统。在该系统控制作用下,可实现市电故障检测以及无人值守条件下的自动运行。通过实验证明,文中所使用的差动式低通放大电路作为前置电压采样电路和软件补偿算法,可较好地抑制共模干扰信号,高频干扰信号,冲击噪声,提高了测量的准确性与可靠性。与以往的双电源供电和外置AD做法相比,文中所采用的单电源加偏置电压的信号采集电路成本降低,外围器件减少,且缩小了电路体积。
A diesel generator detecting and automation system based on PIC24F is designed to overcome the de- fects such as special function, low integration, low precision and response. The experiments show that the design enhances the reliability and accuracy and inhibits the common interference, high-band interference, impact noise owing to its use of the differential amplifier with the low pass filter as a pre-sample circuit and the compensation algo- rithm. Compared with the dual supply source circuit with external AD convert, the circuit using a single supply source has lower cost and less external components, and smaller size.
出处
《电子科技》
2015年第6期86-90,共5页
Electronic Science and Technology
关键词
发电机控制器
检测电路
三相电压
generator set
measuring circuit
three-phase voltage
