热电材料电阻率测量的专用恒流源  

Design of Constant Current Source for Resistivity Measurement of Thermoelectric Material

作　　者：许伟明[1] 李瑜煜[1] 叶健聪 

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《实验室研究与探索》2016年第7期143-148,共6页Research and Exploration In Laboratory

基　　金：广东省省级科技计划项目(2015A030401091)

摘　　要：为提高热电材料电阻率的测量精度,以Arduino及LabVIEW作为硬件与软件平台,构建热电材料电阻率测量的专用恒流源。恒流源实现了大范围电流输出,具有可控频率的电流换向功能,同时具备数据采集、数据处理和数据显示等功能。经实验验证,相对误差在-0.5%-2%内,实现了电流的恒定输出,为热电材料测量电阻率提供了一个有价值的恒流源方案。A controllable constant current source was designed with the Arduino as hardware and the LabVIEW as software, in order to improve the measurement accuracy of the thermoelectric materials resistivity. The constant current source has not only a wide range of current output, but also an ability to change the direction of current with controllable frequency. Meanwhile, it has functions of data acquisition, data processing and data display. Experiments show that the relative error within -0.5% -2%. It provides a valuable constant current source scheme for measuring resistivity of thermoelectric material.

关 键 词：恒流源 热电材料 LABVIEW ARDUINO 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置] TH89[自动化与计算机技术—控制科学与工程]