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Table 1. Predictive model evaluation table

Production line  Predictive index  7training set_R 9training set_R  XR_ratio  7training set_MAPE 9training set_MAPE MX_ratio  7test set_MAPE 9test set_MAPE MC_ratio
                                                                    54.59%
(0,0) Zero dispersion wavelength 0.491272    0.75944                15.18%    0.0010408  0.00084282  -19.03%                  0.0013964  0.0026359 88.76%
                                                                    14.31%
(0,0)            λc mean           0.733162  0.84442                 3.86%    0.0068304  0.00507987  -25.63%                  0.0116615  0.0020858 78.87%
                                                                     3.86%
(0,0)            λc(in)mean        0.719932  0.82298                          0.0068612  0.00536076  -21.87%                  0.0125892  0.0179060 42.23%

(0,0)            1310MFD mean      0.929181  0.96504                          0.0026713  0.00186093  -30.34%                  0.0059144  0.0091062 53.96%

(0,0)            1310MFD(in) mean  0.917445  0.95306                          0.0029256  0.00216591  -25.97%                  0.0062456  0.0096742 54.90%

By drawing and collecting the measured data, the difference                   control in the field of optical fiber preform manufacturing,
between the prediction results and the actual measured                        and with the help of embedded big data management
values is compared online to dynamically evaluate the                         model, it has mined the potential risks in real time and
prediction effect of the model, as shown in Fig. 4. When                      improved the emergency response capability.
the model prediction deviation meets the requirements, it                     3.2.1 Intelligent Equipment. FiberHome has independently
is connected to the production control system to realize the                  researched and developed a series of key intelligent
intelligent optimization of the production process.                           equipments in the field of optical fiber preform
                                                                              manufacturing, including core rod automatic deposition
 Figure 4. Real-time deviation monitoring of big data AI predictions for      and sintering integrated equipment, automated core rod
 optical fiber preform quality                                                precision extension equipment and intelligent outside high-
                                                                              speed deposition equipment, etc., which provide hardware
3.2 Automation of the Production Process                                      support for the construction of intelligent manufacturing
Unmanned or less-manned operation of the production                           workshop.
process is one of the core objectives of intelligent                          Taking the optical fiber preform outside deposition process
manufacturing, which can significantly improve production                     as an example, the precise control of flame temperature
efficiency, reduce human errors and ensure product                            and position is a key factor to ensure product quality.
consistency. FiberHome has realized a high degree of                          The traditional manual observation and adjustment
automation in the production process by introducing                           methods have limitations such as slow response speed
advanced automation equipment and systems.                                    and difficulty in tracking flame changes in real time.
FiberHome has fully carried out digital-enabled production                    FiberHome introduced a flame state detection system based
construction and independently developed the digital twin                     on YOLOv8 algorithm, as shown in Fig. 6. The system
3D intelligent optical fiber preform factory control system,                  can detect the flame direction and color in real time and
as shown in Fig. 5. 1:1 digital virtual simulation of all                     compare it with the samples during training. Once the
equipment, real-time monitoring of all key parameters of                      deviation is found, the system will automatically trigger an
the optical fiber preform production equipment, and trend                     alarm and prompt manual adjustment, which improves the
analysis and early warning of important core parameters,                      safety of the production process and significantly reduces
which enhances the enterprise's production control capacity                   the need for manual intervention.
and data asset utilization rate.
                                                                               Figure 6. Layered architecture of flame monitoring system
 Figure 5. Digital twin 3D plant panoramic view

 Through production automation and the development of                         3.2.2 Intelligent Logistics System.On the basis of
 digital technology capabilities, FiberHome has realized the                  production automation, FiberHome has further developed
 advantages of state visibility, quality visibility and remote                an intelligent logistics system applicable to optical fiber
                                                                              preform production, realizing fully automated material
44                                                                            distribution and management of the production process.
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