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Design of Experimental System of USB Data Acquisition Card-based Temperature Acquisition 被引量:1
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作者 LIU Xiao-feng WANG Yu-shun +1 位作者 XU Zhong-yun YU Yong-fang 《International Journal of Plant Engineering and Management》 2017年第1期27-32,共6页
In order to design a more efficient and more convenient temperature acquisition system, an approach combining USB data acquisition card with K type thermocouple temperature sensor is proposed under the circumstance of... In order to design a more efficient and more convenient temperature acquisition system, an approach combining USB data acquisition card with K type thermocouple temperature sensor is proposed under the circumstance of LabVIEW 2012 programming software. Firstly, the LabVIEW 2012 programming software is used to complete a temperature acquisition control program. Secondly, K type thermocouple temperature sensor is employed to transfer the temperature information. Thirdly, Then the USB data acquisition card can collect the voltage of K type thermocouple temperature sensor and convert it to a temperature scale. And, the simplification of experimental procedure can reduce the cost of development greatly. Finally, the experimental results illustrate that the range of measurement temperature is more wide and the temperature scale is more accurate. 展开更多
关键词 LabVIEW 2012 USB data acquisition card K type thermocouple temperature sensor ad849
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由AD849构成的高速指数电路
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作者 沈群 《集成电路应用》 1996年第5期2-3,共2页
一、引言在信息通讯,微弱信号提取等场合,经常需要进行非线性滤波,其中指数电路是一个重要环节。传统的模拟型指数电路有三种模式:第一种是采用乘法电路。其特点是运算准确,缺点是电路复杂,调整与实现困难,并且受到乘法速度的限制,不宜... 一、引言在信息通讯,微弱信号提取等场合,经常需要进行非线性滤波,其中指数电路是一个重要环节。传统的模拟型指数电路有三种模式:第一种是采用乘法电路。其特点是运算准确,缺点是电路复杂,调整与实现困难,并且受到乘法速度的限制,不宜用于高频信号场合。第二种是无源方式,它由非线性元件构成的非线性网络组成。其特点是线路简单,频率响应好。但是不宜作到阻抗匹配。 展开更多
关键词 指数电路 ad849 非线性电路
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