口袋仪器实验室的抽样定理综合创新性实验

Comprehensively Innovational Experiment of Sampling Theorem Based on Pocket Instruments Laboratory

抽样定理是"信号与系统"中重要的知识点,课堂教学内容抽象且不易理解,常规的简单验证性实验很难提高学生的学习兴趣。依据新工科人才培养的要求,提出围绕工科学生工程实践能力培养目标,基于便携式口袋仪器实验室,软件和硬件结合,设计与实现时域抽样定理及信号恢复的综合创新性实验。在理论指导下,首先利用Multisim软件进行实验电路仿真与参数计算,随后据此实验设计搭建实际的实验电路,最后利用Analog Discovery2口袋仪器与WaveForms软件,完成信号驱动、实验调试、实时测量和数据分析。学生经过实验的设计、仿真、调试和测量等动手实践,可完成基础性、综合性和创新性实验,从而加深对相关理论知识的理解与掌握,培养创新意识和实践能力。

Sampling theorem is an important knowledge point in the "Signal and System" course, but for students the concept is abstract and is not easy to understand, also the traditional verification experiment cannot promote students’ learning interest. On the demand of emerging engineering talent cultivation, a comprehensive innovation experiment of sampling theorem and signal reconstruction in time domain based on pocket instruments laboratory is developed by the combination of software and hardware. With the guidance of theories, a brief illustration of the experiment is described as follows: firstly, experiment circuit simulation and numerical parameters calculation are implemented with Multisim; secondly, this experiment circuit is designed to establish hardware experimental system; finally, comprehensive and integrated experiment operation is accomplished with Analog Discovery2 platform and WaveForms software. Experienced with theoretical and practical foundation stages of design, simulation, debugging and measurement, the real system of basic experiment, comprehensive experiment and innovation experiment could facilitate students to comprehend course’s contents more effectively and train their independently innovative spirit and practical ability.