Page 59 - 《橡塑技术与装备》英文版2026年1月

NEW TECHNOLOGIES AND PRODUCTS

on the completion of experimental material cleaning, it can final disconnection of all power supplies to the unit, avoiding
also ensure that the machine's shutdown state is optimal for the potential safety hazards. The guidance interface for some steps
next experimental startup. The shutdown process ends with the of the startup guidance system is shown in Figure 3.

Figure 3 Guidance Interface

1.4.2 Fault monitoring and alarm expert for inexperienced student operators to quickly formulate a
system troubleshooting approach. Taking the fault of the heater not
The development purpose of the fault monitoring and working properly as an example, the expert system will provide
alarm system is to: ① reduce the number of equipment maintenance guidance on checking whether the line terminals
interlock shutdowns; ② indicate the location of the fault point are loose, whether the line electrical components (fuses) are
when an interlock shutdown occurs; ③ provide guidance on open-circuited, and whether the temperature control instrument
troubleshooting. Taking the monitoring of the current of the is working properly.
host machine's screw drive motor as an example, the functions
of this system are analyzed. In the experiment, when the main 2 Benefits brought by digital twins
feeding amount is increased, the current of the host machine 2.1 Improved safety level
will show a rapid increase with the increase of the feeding A device management system based on digital twins
amount and then stabilize. For inexperienced student operators, can effectively enhance the safety of equipment operation.
if they adjust the main feeding speed too quickly, there is Taking the boot guidance system as an example, while
a high risk of the host machine current being momentarily operators follow the system's instructions to carry out various
overloaded, leading to an interlock shutdown. Therefore, startup procedures, the system monitors the progress of
the system will provide necessary guidance to the operators the boot process, minimizing potential risks and failures of
based on changes in the main feeding speed, main feeding the equipment caused by inexperienced operators due to
current, and host machine current. If the main feeding speed oversights. At the same time, the digital twin system can
is adjusted too quickly, the system will prompt the operator to also standardize the operation procedures for inexperienced
stop the operation and adjust the feeding speed in the opposite operators based on the real-time status of the equipment,
direction. This can effectively avoid interlock shutdowns preventing interlock shutdowns caused by improper operations.
caused by host machine current overload. For another example, According to incomplete statistics, the number of interlock
by analyzing historical data on the barrel temperature and shutdowns of equipment operation has decreased by 50%
using real-time data on the current of the corresponding barrel before and after using this system.
heater, it is possible to determine possible faults in the barrel 2.2 Reduction in equipment operation and
heater. Because the occurrence of certain equipment faults maintenance costs
may correspond to multiple reasons, it is more important Equipment electricity consumption is one of the main

Vol.52，2026 ·13·