Cable-based fault injection device and method

The invention provides a cable-based fault injection device and method. A transmission cable between electromechanical devices is used as a medium, the fault injection device is connected in series between original electromechanical devices, and through series connection and parallel connection of resistors on cable cells, short circuit of the cells, superposition of current signals and replacement of messages, the function of injecting faults into the cable efficiently and conveniently is achieved. According to the invention, a fault-tolerant capability and stability test means is provided for important electromechanical control equipment, the fault-tolerant capability of external communication of the important electromechanical equipment is improved, and a test means for the stability of the electromechanical equipment is provided. 本发明提供了一种基于电缆的故障注入装置和方法，以机电设备之间的传输电缆为媒介，将所述故障注入装置串接在原机电设备之间，通过在电缆电芯上串接、并接电阻、电芯短接、电流信号叠加、报文替换，实现了高效、便捷地向电缆注入故障的功能。本发明为重要机电控制设备提供了容错能力、稳定性检验手段，提高了重要机电设备对外通信的容错能力，提供了对机电设备稳定性的检验手段。