基于真均方根转换器的温度脉动仪设计  

Design of the Macro-thermal Sensor Based on True RMS Converter

作　　者：张志刚[1,2] 段哲民[1] 强希文[2] 封双连[2] 胡月宏[2] 

机构地区：[1]西北工业大学电子信息学院 [2]中国人民解放军63655部队

出　　处：《计算机测量与控制》2012年第9期2577-2580,共4页Computer Measurement &Control

基　　金：国家自然基金(61071175);河南省自然科学基金项目(122300410049)

摘　　要：温度脉动仪应用于大气湍流高度分布测量时,需要输出模拟电压信号与探空仪接口匹配,若其均方根计算电路依靠单片机实现,电路中还应该包括模数和数模转换器;真均方根转换器AD637是一款能够进行均方根模拟计算的集成芯片,可以实现单片机、模数和数模转换器三个芯片的功能,因此,提出了一种基于真均方根转换器的温度脉动仪设计;通过数据对比实验发现,该温度脉动仪测量数据能够反映大气湍流的日变化规律,数据曲线与嵌入式温度脉动仪具有很好的一致性。When the micro-thermal sensor is used to measure the vertical distribution of the atmosphere turbulence, its output signal must be analog voltage signal to match the meter. If its RMS calculated circuit is made up by single chip computer, the circuit should con clude ADC and DAC. The true RMS converter AD637 is a integrated chip which can do analog ,calculations of the RMS. Therefore, a design based on the true RMS converter is produced. Though the experiment of data comparison, it is found that the measured data of the macro- thermal sensor can reflect the day variety rules of the atmosphere turbulence and the data curves show a very good coherence compared with the embedment- mode micro- thermal sensor.

关 键 词：温度脉动仪 大气湍流 AD637 均方根 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]