中国机械工程 ›› 2026, Vol. 37 ›› Issue (5): 1045-1053.DOI: 10.3969/j.issn.1004-132X.2026.05.004
• 专栏 • 上一篇
收稿日期:2025-09-02
出版日期:2026-05-25
发布日期:2026-06-09
通讯作者:
姜潮
作者简介:付昊成,男,2000年生,博士研究生。研究方向为辐射仿真与屏蔽结构优化设计方法、蒙特卡罗粒子输运方法。E-mail:fuhaocheng@hnu.edu.cn基金资助:
FU Haocheng1,2(
), WU Shaowei2,3, JIANG Chao1,2(
)
Received:2025-09-02
Online:2026-05-25
Published:2026-06-09
Contact:
JIANG Chao
摘要:
针对核辐射环境下图像传感器辐射屏蔽问题,提出基于蒙特卡罗(MC)减方差的辐射仿真方法和屏蔽结构多目标优化设计方法。根据中子和光子耦合输运原理构建图像传感器的多辐射源复合屏蔽模型,并针对其厚屏蔽微探测结构特征提出特征插值权窗MC减方差的屏蔽仿真方法,有效提高了其屏蔽仿真的计算效率与精度;通过将遗传算法与辐射屏蔽结构参数化几何建模结合,构建图像传感器的多目标优化设计方法,以获得体积、质量和剂量率参数下最优解并得到Pareto前沿的非劣解组合。数值实验验证了该图像传感器辐射屏蔽结构优化设计方法的有效性。
中图分类号:
付昊成, 吴少伟, 姜潮. 基于蒙特卡罗减方差方法的图像传感器辐射屏蔽结构多目标优化设计[J]. 中国机械工程, 2026, 37(5): 1045-1053.
FU Haocheng, WU Shaowei, JIANG Chao. Radiation Shielding Structure Multi-objective Optimization of Imagine Sensors Based on Monte-Carlo Variance Reduction Method[J]. China Mechanical Engineering, 2026, 37(5): 1045-1053.
| 材料编号 | 二进制编码 | 材料 | 密度/(g·cm |
|---|---|---|---|
| 0 | 0000 | 玻璃 | 2.40 |
| 1 | 0001 | 含硼玻璃 | 2.23 |
| 2 | 0010 | 铅玻璃 | 6.22 |
| 3 | 0011 | 石英玻璃 | 2.20 |
| 4 | 0100 | 铅 | 11.35 |
| 5 | 0101 | 锻钢 | 7.70 |
| 6 | 0110 | 灰铸铁 | 7.15 |
| 7 | 0111 | 302不锈钢 | 7.86 |
| 8 | 1000 | 铝 | 2.73 |
| 9 | 1001 | 钨 | 19.30 |
| 10 | 1010 | PE | 0.93 |
| 11 | 1011 | PET | 1.38 |
| 12 | 1100 | 含硼PE | 1.00 |
表1 材料选择编码
Tab.1 Code of material selections
| 材料编号 | 二进制编码 | 材料 | 密度/(g·cm |
|---|---|---|---|
| 0 | 0000 | 玻璃 | 2.40 |
| 1 | 0001 | 含硼玻璃 | 2.23 |
| 2 | 0010 | 铅玻璃 | 6.22 |
| 3 | 0011 | 石英玻璃 | 2.20 |
| 4 | 0100 | 铅 | 11.35 |
| 5 | 0101 | 锻钢 | 7.70 |
| 6 | 0110 | 灰铸铁 | 7.15 |
| 7 | 0111 | 302不锈钢 | 7.86 |
| 8 | 1000 | 铝 | 2.73 |
| 9 | 1001 | 钨 | 19.30 |
| 10 | 1010 | PE | 0.93 |
| 11 | 1011 | PET | 1.38 |
| 12 | 1100 | 含硼PE | 1.00 |
| 组号 | CR | CV | CW |
|---|---|---|---|
| 1 | 0.8 | 0.1 | 0.1 |
| 2 | 0.7 | 0.2 | 0.1 |
| 3 | 0.6 | 0.3 | 0.1 |
| 4 | 0.6 | 0.2 | 0.2 |
| 5 | 0.5 | 0.4 | 0.1 |
| 6 | 0.5 | 0.3 | 0.2 |
表2 参数组合
Tab.2 Parameter combination
| 组号 | CR | CV | CW |
|---|---|---|---|
| 1 | 0.8 | 0.1 | 0.1 |
| 2 | 0.7 | 0.2 | 0.1 |
| 3 | 0.6 | 0.3 | 0.1 |
| 4 | 0.6 | 0.2 | 0.2 |
| 5 | 0.5 | 0.4 | 0.1 |
| 6 | 0.5 | 0.3 | 0.2 |
| 组号 | 剂量率/(Gy·h | 体积/cm3 | 质量/kg | x1/cm | x2/cm | x3/cm | x4/cm | x5/cm | x6/cm | m1 | m2 | m3 | m4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 0.040 | 5931 | 50.509 | 3.82 | 1.90 | 4.07 | 1.41 | 4.09 | 3.67 | 2 | 1 | 10 | 9 |
| 2 | 0.055 | 4730 | 23.123 | 4.11 | 1.74 | 0.79 | 3.92 | 3.80 | 2.70 | 2 | 3 | 9 | 12 |
| 3 | 0.052 | 4476 | 15.508 | 3.30 | 4.14 | 0.11 | 4.69 | 2.43 | 2.70 | 3 | 2 | 9 | 10 |
| 4 | 0.047 | 5300 | 22.425 | 4.19 | 2.98 | 0.83 | 4.00 | 2.67 | 4.30 | 3 | 2 | 9 | 12 |
| 5 | 0.065 | 3090 | 35.300 | 0.90 | 3.29 | 1.82 | 1.92 | 1.22 | 3.45 | 1 | 2 | 10 | 9 |
| 6 | 0.054 | 4223 | 15.017 | 2.78 | 4.80 | 0.06 | 4.54 | 2.55 | 0.53 | 2 | 1 | 9 | 12 |
表3 不同参数组合最优化设计结果
Tab.3 Optimization results of different group
| 组号 | 剂量率/(Gy·h | 体积/cm3 | 质量/kg | x1/cm | x2/cm | x3/cm | x4/cm | x5/cm | x6/cm | m1 | m2 | m3 | m4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 0.040 | 5931 | 50.509 | 3.82 | 1.90 | 4.07 | 1.41 | 4.09 | 3.67 | 2 | 1 | 10 | 9 |
| 2 | 0.055 | 4730 | 23.123 | 4.11 | 1.74 | 0.79 | 3.92 | 3.80 | 2.70 | 2 | 3 | 9 | 12 |
| 3 | 0.052 | 4476 | 15.508 | 3.30 | 4.14 | 0.11 | 4.69 | 2.43 | 2.70 | 3 | 2 | 9 | 10 |
| 4 | 0.047 | 5300 | 22.425 | 4.19 | 2.98 | 0.83 | 4.00 | 2.67 | 4.30 | 3 | 2 | 9 | 12 |
| 5 | 0.065 | 3090 | 35.300 | 0.90 | 3.29 | 1.82 | 1.92 | 1.22 | 3.45 | 1 | 2 | 10 | 9 |
| 6 | 0.054 | 4223 | 15.017 | 2.78 | 4.80 | 0.06 | 4.54 | 2.55 | 0.53 | 2 | 1 | 9 | 12 |
| CR | CV | CM | |
|---|---|---|---|
| 剂量率 | 0.82 | 0.57 | |
| 体积 | |||
| 质量 | 0.11 |
表4 加权系数相关系数
Tab.4 Weight factor correlation coefficient
| CR | CV | CM | |
|---|---|---|---|
| 剂量率 | 0.82 | 0.57 | |
| 体积 | |||
| 质量 | 0.11 |
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