基于嵌入式人工智能的手写数字识别实验案例设计

Design of Handwritten Digit Recognition Experimental Case Based on Embedded Artificial Intelligence

  • 摘要: 随着边缘计算与智能物联网的快速发展,嵌入式人工智能技术因其低功耗、高实时性的特点,在智能制造、自动驾驶等领域展现出广阔应用前景。为推进人工智能教学与嵌入式技术的深度融合,设计开发了基于Zynq平台的手写数字识别教学实验案例。系统以经典MNIST数据集为基础,分别构建了全连接神经网络(Fully Connected Network, FCNN)和卷积神经网络(Convolutional Neural Network,CNN)两个模型,采用高层次综合(High Level Synthesis,HLS)技术实现硬件加速。通过Programmable Logic(PL)端并行计算优化,在保持模型精度的同时显著降低模型推理延迟,最终在Zynq系统中分别达到98.20%和99.05%的识别准确率。教学案例通过“算法设计−硬件优化−系统部署”的全流程实践,使学生深入掌握嵌入式人工智能开发的关键技术,培养其软硬件协同设计能力与工程优化思维。教学实践反馈显示,实验案例有效提升了学生在边缘计算场景下解决复杂工程问题的能力,为人工智能课程改革提供了可复制的创新范式。

     

    Abstract: With the rapid development of edge computing and intelligent Internet of Things, embedded AI technology has shown broad application prospects in intelligent manufacturing, automatic driving and other fields due to its low power consumption and high real-time characteristics. To promote the deep integration of artificial intelligence teaching and embedded technology, a handwritten digit recognition teaching experimental case based on Zynq platform was designed and developed. The system is based on the classic MNIST dataset and has constructed two models, Fully Connected Network (FCNN) and Convolutional Neural Network (CNN), respectively. High Level Synthesis (HLS) technology is used to achieve hardware acceleration. Through parallel computing optimization on the Programmable Logic (PL) side, the model inference delay was significantly reduced while maintaining model accuracy, ultimately achieving recognition accuracies of 98.20% and 99.05% in the Zynq system, respectively. Through the full process practice of “algorithm design hardware optimization system deployment”, teaching cases enable students to deeply master the key technologies of embedded artificial intelligence development, cultivate their software hardware collaborative design ability and engineering optimization thinking. The feedback from teaching practice shows that the experimental cases have effectively improved students' ability to solve complex engineering problems in the edge computing scene, and provided a replicable innovative paradigm for AI curriculum reform.

     

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