During system control, each sensor makes a continuous measurement and transmits the measurement data to the controller to set the actuator. The period of typical closed-loop control process is as low as ms level, so the communication delay of the system needs to reach ms level or even lower to ensure the precise control of the control system, which requires high reliability. If the delay time in the production process is too long, or the control information in the data transmission is wrong, the production may be stopped, resulting in huge economic losses.