介绍了一种用于发电机组、电机等设备在线故障检测和保护报警的控制系统．该系统采用以８０９８单片机为核心的控制器件及其外围电路，通过对电压、电流采样并对检测到的参数进行处理，实现了自动检测、故障自诊断、保护报警以及在线设置参数等功能．它可以降低成本，减少组装和调试工作，缩小控制屏体积，减少内部构件，效益明显． A control system for on-line fault detection and protection alarm of generators, motors and other equipment is introduced. The system uses 8098 single-chip microcomputer as the core of the control device and its peripheral circuits, through the voltage and current sampling and processing of the detected parameters, to achieve automatic detection, fault self-diagnosis, alarm protection and online setting parameters and other functions. It can reduce costs, reduce assembly and commissioning work, reduce the control screen size, reduce internal components, the obvious benefits.