“…One is to avoid mistakes, that is to avoid failures, which requires strict screening of computer components, improving design, improving manufacturing technology, and strengthening quality management. However, even such a communication system cannot avoid failure due to its working environment with various environmental stresses, such as electromagnetic interference, humidity, temperature, strong vibration [3]. This requires that the communication network can tolerate faults in the event of faults, that is, the second method: fault-tolerant technology.…”