摘要
超速离心机转子需要在高真空环境下高速运行,传统的接触式测温会产生较大的误差。根据红外测温的原理,采用红外热电堆传感器测量转子的温度,介绍了红外测温系统的总体设计和测量电路硬件设计,并重点研究了环境温度与转子材料发射率对测量精度的影响,采用了相应的补偿算法来提高精度.经仿真实验和实际测试表明:该系统能满足超速离心机的温控要求。
Ultracentrifuge rotor needs high-speed operation in a vacuum environment, the traditional contact type temperature measurement produces large errors. Based on the principle of infrared temperature measurement, using infrared thermopile temperature sensor to direct measure the rotor temperature. The overall design and measurement circuit＇ s hardware design are described. Impact of environmental temperature and rotor material emissivity on measurement precision is focused on, and a corresponding compensation algorithm is used to improve the precision. The simulation experiments and practical tests show that the system can meet the temperature control requirements of ultracentrifuge.
出处
《传感器与微系统》
CSCD
北大核心
2012年第3期119-121,125,共4页
Transducer and Microsystem Technologies
基金
长沙市产学研合作专项重点基金资助项目(K092018-11)
科技部科技中小企业技术创新基金资助项目(08C26214302174)
关键词
超速离心机
红外测温
放大调理电路设计
环境温度与发射率补偿
ultracentrifuge
infrared temperature measurement zoom conditioning circuit design ambienttemperature and emissivity compensation
