Construction Method of Digital Twin System for High-low Temperature Test Chamber

doi:10.16182/j.issn1004731x.joss.24-0178

Abstract

Abstract:

In view of the construction requirements of the digital twin system of the high-low temperature test chamber, the EMQX server with MQTT as the communication protocol is used for data transmission. Driven by real-time data, real-time dynamic interactive mapping between the physical entity and the virtual model is realized. The neural network model and genetic algorithm are used to evaluate and predict the running state of the equipment and provide the system adjustment strategy, so as to realize the whole climate, life and working condition of the staff to understand the running state of the equipment, and effectively ensure the safe and reliable operation of the high-low temperature test chamber.

Key words: digital twin, high-low temperature test chamber, active mapping, virtual-real interaction, comprehensive monitoring

CLC Number:

TP391.1

Chen Qinghua, Liang Zuoyou, Guan Weijuan, Ji Jiadong, Liu Ping. Construction Method of Digital Twin System for High-low Temperature Test Chamber[J]. Journal of System Simulation, 2025, 37(6): 1400-1411.

Figures/Tables 19

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Table 1

Analysis of temperature distribution state

分布状态	判别条件
稳态温度分布 (同时满足)	$Δ T j ≤ ± 0.5 ℃$ $Δ T m a x ≤ 2 ℃$ $Δ T m i n ≥ - 2 ℃$
过渡态温度分布	$T ¯ < T S ± 2 ℃$
局部热点	$Δ T m a x > 2 ℃$
局部冷点	$Δ T m i n < - 2 ℃$
温度突变	稳态温度分布阶段： $Δ T j > ± 0.5 ℃$

Table 1

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Table 2

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Table 3

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故障类型	故障现象	故障因素
温度控制故障	设定温度无法达到或维持	温度传感器损坏或校准不准确温度控制器故障加热器或制冷系统故障
湿度控制故障	设定湿度无法达到或维持	湿度传感器损坏或校准不准确加湿器或去湿系统故障
机械故障	设备运行异常或损坏	门封条损坏或老化空气循环风扇故障物理损伤
电气故障	设备无法启动或操作异常	电源供应问题控制面板或显示屏故障安全保护装置失效
环境因素	设备性能受外部环境影响	实验室环境温度和湿度波动电源质量不佳
设备老化	设备性能逐渐下降	设备部件自然老化缺乏定期维护和更换易损件

参数名称		温度		湿度
范围		(-80~200)℃	(200~300)℃	(10~85)℃ >75% RH	(10~85)℃ ≤75%RH
偏差	温度/℃	±2	±3	±2	±2
偏差	湿度/%RH	—	—	±3	±3
均匀度	温度/℃	2	3	2	2
均匀度	湿度/%RH	—	—	5	7
波动度	温度/℃	±0.5	±1	±0.5	±1
波动度	湿度/%RH	—	—	±3	±3

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