Research
on temperature prediction of grain storage based on TCN-BiGRU combined with
self-attention mechanism

Abstract

Abstract: Efficient grain storage management holds significant importance for a nation, with storage temperature is one of the key indicators of storage safety. Accurately predict the temperature of stored grain and make timely and appropriate protective measures can effectively reduce grain storage losses.To address the limitations of traditional prediction models, this paper introduces a novel network model integrating a time-domain convolutional network (TCN), a self-attention mechanism, and a bi-directional gated recursive unit (BiGRU). First of all, the local features of grain storage temperature data are obtained by TCN, and the Self-Attention mechanism is incorporated into the network according to the temporal characteristics of grain storage temperature to assign weights to different grain features, highlighting the features that have a greater impact on the prediction of grain storage temperature. In addition, BiGRU network is used to learn the bi-directional dependency of grain condition sequences to obtain more information in the sequences and achieve the prediction of grain storage temperature. The experimental results show that the RMSE of the model is 0.3895, the MAE is 0.3281, and the R² is 0.9912. Compared with other models, the proposed method reduces the error and improves the prediction accuracy, thus providing a solid foundation for decision-making in grain storage temperature control.

Key words: grain storage temperature prediction, TCN, self-attention mechanism, GRU

摘要： 粮食仓储管理对于国家具有重要意义，储粮温度是判断粮食仓储安全的重要指标之一。准确地预测储粮温度并及时做出相应的防护措施能够有效降低粮食仓储损耗。针对传统储粮温度预测模型预测准确度较低的问题，本文提出了一种融合时域卷积网络（TCN）、自注意力机制（Self-Attention）和双向门控循环单元（BiGRU）的网络模型。首先通过TCN提取储粮温度数据的局部特征，并根据储粮温度数据的时序特征将自注意力机制加入网络为不同粮情特征分配权重，突出对储粮温度预测影响更大的特征，之后利用BiGRU网络学习粮情序列的双向依赖关系来获取序列中的更多信息，实现对储粮温度的预测。实验结果显示所提出的模型RMSE为0.3895，MAE为0.3281，R²为0.9912，与其他模型相比误差小，预测精度高，能够为粮仓的温度管控提供决策依据。

关键词: 储粮温度预测, 时域卷积网络, 自注意力机制, 门控循环单元网络

CLC Number:

S379','1');return false;" target="_blank"> S379
TP183

Zhu Yuhua, , Zhang Yuhan, , Li Zhihui, , Zhen Tong, . Research on temperature prediction of grain storage based on TCN-BiGRU combined with self-attention mechanism[J]. Journal of Chinese Agricultural Mechanization.

祝玉华, , 张钰涵, , 李智慧, , 甄彤, . 基于TCN-BiGRU结合自注意力机制的储粮温度预测研究[J]. 中国农机化学报.

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Research on temperature prediction of grain storage based on TCN-BiGRU combined with self-attention mechanism

基于TCN-BiGRU结合自注意力机制的储粮温度预测研究

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