基于自制音频示波器的混沌电路微弱距离信号检测系统设计

Design of weak distance signal detection system with chaotic circuit based on self-made audio oscilloscope

通过分析蔡氏电路随系统参数的变化规律,利用其结构简单但具有丰富的动力学行为的特点,结合单片机、传感器、模拟电子技术、信号处理及非线性电路的教学内容开展实验研究,设计并实现了一种混沌电路微弱距离信号检测系统;结合自制的音频示波器,可方便地实现对系统混沌特性及其他参数的观测及演示。该系统具有成本低、使用方便、不受场地和设备等条件限制的特点,便于实现和复制,有利于提高学生对混沌电路学习的积极性。

By analyzing the changing rule of Chua’s circuit with the system parameters,by using its simple structure with rich dynamic behavior characteristics and in combination with the teaching contents of the MCU,sensor,analog electronic technology,signal processing and non-linear circuit,this paper designs and realizes a weak distance signal detection system of chaotic circuit.With the self-made audio oscilloscope,it is convenient for observing and demonstrating the chaotic characteristics and other parameters of the system.The system has the characteristics of low cost,being easy to use,and being not limited by the site and equipment.It is easy to realize and copy,and it is conducive to improving students’interest and enthusiasm in learning chaotic circuits.