混沌电路的温度特性及其在温度测量中的应用  

Temperature Characteristic of Chaotic Circuits and It's Application in Temperature Measurement

作　　者：陈琢[1] 童勤业[1] 

机构地区：[1]浙江大学仪器科学与工程系,浙江杭州310027

出　　处：《电路与系统学报》2003年第4期21-24,共4页Journal of Circuits and Systems

基　　金：国家自然科学基金资助项目(30170267)

摘　　要：本文给出了一种基于映射式混沌电路的温度测量新方法,与现有的测量方法完全不同。把对温度敏感的所有元件参数都考虑在内,测量过程中将这些元件都置于测温环境中,电路输出的符号序列直接反映了温度的变化。因此不再有测量电路的温度漂移的问题,具有较高的精确度和灵敏度。此外,该电路的结构简单,又能直接输出反映温度变化的二进制代码,即数字信号,便于计算机处理。计算机仿真和实际电路实验都显示该方法的优越性。A new method of temperature measurement based on mapping chaotic circuit is proposed. Completely different from traditional measurement methods, all element parameters sensitive to the temperature are considered in the process of temperature measuring, all working electronic elements involved are put in the environment of temperature being measured. Temperature variation can be detected from the output series of symbols. Therefore, there is no any more the problem of temperature shift as to improve the detecting accuracy and sensitivity. In addition, the circuit for measuring is simple, and the output signal has been digitized for further processing by the computer. Both computer simulation and circuit experiment demonstrate the merits of the proposed method.

关 键 词：混沌电路 温度测量 信号检测 

分 类 号：TN901[电子电信—信息与通信工程]